• 专利附录
  • 专利说明
  • 权利要求
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    • 专利摘要:
    GRAIN CLEANING SYSTEM FOR HARVESTERS AND THIS OPERATION METHOD This is a method for cleaning the grain cleaning system of a harvester. The method includes the step of generating and directing a high-speed airflow in a first direction to the inlet end of a cleaning shoe. The method also includes the step of monitoring the cleaning shoe in order to detect a change in an operational parameter of it, the operational parameter being one of a transient effect of a cleaning shoe sieve, the flow rate at the outlet end of the cleaning shoe and the flow speed at the outlet end of the cleaning shoe. In addition, the method includes the step of redirecting high-speed airflow at the inlet end of the cleaning shoe to one second in response to a detected change in the operating parameter.
    公开号:BR102013031235B1
    申请号:R102013031235-5
    申请日:2013-12-04
    公开日:2020-12-01
    发明作者:Octavian Stan；Karl Robert Linde
    申请人:Cnh Industrial America Llc；
    IPC主号:
    专利说明:

    [0001] In general terms, the present invention relates to harvesters. More specifically, the present invention relates to a grain cleaning system for harvesters that includes a blower with adjustable air flow distribution.
    [0002] Modern harvesters can be used to harvest and thresh a wide range of agricultural products. Harvesters include a threshing mechanism, where the harvest material is threshed in order to separate the grains from the un-gravelable part of the harvest, and grain cleaning systems, where the cleaned seeds of the grains are separated from other particles of the harvest. More specifically, in typical harvesters for harvesting crop material, the grains are threshed and separated in a threshing and separation mechanism, and the grains separated, together with impurities of all types, such as mill, dust, straw particles and refuse, they are fed to a cleaning system or mechanism to be cleaned. The cleaned grains are collected under the cleaning system and fed to a grain tank for temporary storage. The waste is separated from the clean grains and impurities through sieves, and arrangements are made to recycle the waste through the combine so that it can be reprocessed. This reprocessing involves either recycling the waste through the threshing and separation mechanism and / or treating it in a different refuse rewrapping medium.
    [0003] Cleaning systems are operated in a wide range of conditions, which sometimes result in temporary overloading of sections of the screens. Combine cleaning systems can be temporarily impaired to a large extent by crop and local field conditions, such as rapid variations in slope or a sharp increase in crop productivity when the harvester is driving from a low point yield to an area with higher yield. Disorders can also be caused by incorrect cleaning and separation settings, difficult cleaning conditions (for example, a large amount of green material) or when the combine threshing settings are not adjusted correctly for harvesting conditions. These disorders are known as "transient effects" on the cleaning system and can result in a sudden overload of this, for example, when a portion of the crop material accumulates locally in the upper sieve of the cleaning system so that it is unable to fulfill In addition, a constant overloading of the cleaning system can ultimately lead to a significant increase in the flow of waste, causing excessive cleaning losses and obstructions in the waste return system.
    [0004] The increase in the speed and capacity of the combine is limited by the ability of the cleaning system to separate material other than grains ("MOG") and to keep grain losses within acceptable limits in both flat and rugged conditions. offer a partial solution to changes both in the amount of crop material input and in the distribution / thickness of the crop material in the sieves. Often, in these cases, the operator tries to reduce losses in the sieve by means of speed control strategies. shredding, in particular by slowing the shredding speed, however it is not beneficial to apply variations to the shredding speed after a portion of the crop material is already present in the upper sieve section because it takes a long time to recover from the transient effect, the which causes a significant amount of the crop to be lost before the effects of the new speed stabilize. sudden loss of sieve impairs the closed-loop behavior of automatic grain loss control algorithms and causes serious discomfort to the operator when operating in automatic crush speed control mode.
    [0005] Other techniques for dealing with transient effects, especially in rugged conditions, are to respond to variations in the thickness of the crop material at the top of the sieve by varying the speed of a blower fan in the cleaning shoe. Unfortunately, when, because of the slope, higher fan speed and greater air flow are used to penetrate a greater thickness of the crop material at the front of the cleaning system, the air finds the least resistant path that would also affect the flow of air and speed at the rear of the cleaning system, leading to unacceptable grain losses, thus forcing the operator to slow down the harvest speed in order to limit grain losses.
    [0006] Therefore, there remains a need for a cleaning system capable of solving the above-mentioned defects of current cleaning systems in order to deal with transient effects. This need is satisfied with the cleaning system and method of the present invention. Summary of the Invention
    [0007] According to a preferred embodiment, the present invention proposes a method for releasing a grain cleaning system from a combine that includes the steps of generating and directing a high-speed air flow in a first direction to the inlet end of a shoe cleaning, monitor the cleaning shoe to detect changes in an operating parameter of the cleaning shoe, and redirect high-speed airflow at the inlet end of the cleaning shoe to a second direction in response to the change detected in the parameter operational.
    [0008] According to another preferred embodiment, the present invention proposes a combine that includes a support structure, a grain cleaning system and a controller. The grain cleaning system is installed in the support structure and includes a cleaning shoe with a sieve, a sensor to detect at least one operating parameter of the cleaning shoe and a blower to blow air flow into the cleaning shoe. The controller connects and communicates operationally with the blower and the sensor. The blower is configured to generate an air flow between at least a first and a second direction in order to blow the air flow to the cleaning shoe in several directions in response to the sensor detecting a change at least one operational parameter.
    [0009] In accordance with yet another preferred embodiment, the present invention proposes a method for releasing a grain cleaning system from a combine that includes the steps of providing a blower to generate a flow of air in a first direction towards the inlet end of a cleaning shoe, monitor the air flow generated by the blower in order to detect a change in a blower operating parameter, and modify at least one of the direction, speed and pressure of the air flow in response to the detection of a change in the operational parameter .
    [0010] According to another preferred embodiment, the present invention proposes a combine that includes a support structure, a grain cleaning system and a controller. The grain cleaning system is installed in the support structure. The grain cleaning system includes a cleaning shoe with a sieve, a blower to blow airflow into the cleaning shoe and a sensor to detect at least one operational parameter of the blower. The controller connects and communicates operationally with the blower and the sensor. The blower is configured to provide air flow between at least a first direction and a second direction in order to blow the air flow to the cleaning shoe in several directions in response to the sensor's detection of a change in action least one operational parameter. Brief Description of the Various Views of the Drawings
    [0011] The above summary, as well as the detailed description of preferred embodiments of the invention, will be better understood when read in conjunction with the accompanying drawings. In order to explain the invention, the drawings illustrate the currently preferred embodiments. It should be understood, however, that the invention is not limited to structures and instruments exactly as illustrated. In the drawings:
    [0012] Fig. 1 is a planar side view of a combine according to a preferred embodiment of the present invention; Fig. 2 is a side, partial and plan view of a grain cleaning system for the combine of Fig. 1; Fig. 2A is a top perspective view of the grain cleaning system of Fig. 2; Fig. 3 is a side, partial and plan view of the grain cleaning system of Fig. 2; Fig. 4 is a side, partial and plan view of the grain cleaning system of Fig. 3 with a blower housing piece moved to a position with the outlet opening reduced; Fig. 5 is a side, partial and plan view of a cam system of the grain cleaning system of Fig. 2; Fig. 6 is a side, partial and plan view of a grain cleaning system according to another preferred embodiment of the present invention; Fig. 7 is a side, partial and plan view of the grain cleaning system of Fig. 6 with a blower housing part moved to a second position; Fig. 8 is a schematic diagram of a control system of the present invention; Fig. 9 is a side, partial and plan view of a grain cleaning system according to yet another preferred embodiment of the present invention; Fig. 10 is a side, partial and plan view of a grain cleaning system according to yet another preferred embodiment of the present invention; Fig. 11 is a top perspective view of the grain cleaning system of Fig. 10; Fig. 12 is a perspective view of a grain cleaning system according to another preferred embodiment of the present invention; Fig. 13 is a side plan view of the grain cleaning system of Fig. 2 illustrating a transient effect on a sieve of the grain cleaning system; Fig. 13A is a side plan view of the grain cleaning system of Fig. 13 illustrating the abatement of the transient effect on a sieve of the grain cleaning system; Fig. 14 is a flow chart illustrating a method for releasing a grain cleaning system according to another preferred embodiment of the present invention; Fig. 15 is a flow chart illustrating another method for releasing a grain cleaning system according to another preferred embodiment of the present invention; Fig. 16 is a side, partial and plan view of a grain cleaning system according to another preferred embodiment of the present invention; and Fig. 17 is a side, partial and plan view of a grain cleaning system according to yet another preferred embodiment of the present invention. Detailed Description of the Invention
    [0013] Hereinafter, reference will be made in detail to the preferred embodiments of the invention illustrated in the accompanying drawings. Whenever possible, the same or similar reference numbers will be used throughout the drawings to refer to the same or similar lines. It must be kept in mind that the drawings are simplified and were not designed according to the actual proportions. With reference to the disclosure in this document, for convenience and clarity only, directional terms such as top, bottom, top, bottom, top, bottom and diagonal are used with reference to the accompanying drawings. These directional terms, used in conjunction with the following description of the drawings, should not be construed to limit the scope of the invention in any way that is not explicitly defined. In addition, the indefinite article "one", as used in this specific report, means "at least one". The terminology includes the words specifically mentioned above, their derivatives, inflections and words of the same direction.
    [0014] The terms "grain", "refuse" and "harvest material" are used throughout the specification for convenience and it should be borne in mind that these terms are not intended to be limiting. to the part of a crop that is harvested and separated from the disposable parts of the crop material.
    [0015] With reference to Figs. 1 to 5, in a preferred embodiment, the present invention proposes a combine 10 with a grain cleaning system 100. Combine 10 includes, among other components, a cabin 12, a grain tank 14, a discharge conveyor 16 , a threshing and separation section 18 and a feeder housing 20. These components of the combine 10 are known and, therefore, a detailed description of their structure, function and operation is not necessary for the complete understanding of the present invention. However, an additional description of these harvester components is given in United States Patent Application Publication No. 2012/0184339, the disclosure of which is incorporated herein in full by reference.
    [0016] With reference to Fig. 2, the combine 10 includes a support structure 22, on which the grain cleaning system 100 is connected or installed. The support structure 22 can be any part of the frame, chassis or other support member of the combine.
    [0017] The grain cleaning system 100 applicable to the present invention can include a first grain collector 102, a pre-cleaning sieve positioned above a second grain collector, an upper sieve 104 and a lower sieve 106. The upper sieve 104 and lower 106 are positioned inside a cleaning shoe 108, which serves to house and operate the screens 104 and 106. The cleaning shoe 108 comprises the reinforcement beam frame that surrounds the upper and / or lower screens. Alternatively, the grain cleaning system for a combine applicable to the present invention includes a conveyor bed instead of a grain collector. These grain conveyor and collector beds are well known in the art, and a detailed description of their structure, function and operation is not necessary for a complete understanding of the present invention.
    [0018] The beans separated by the threshing and separating mechanism 18 fall into the grain cleaning system 100. Within the grain cleaning system 100, the beans fall onto the first grain collector 102 and are then transported to the pre-cleaning screen positioned above the second grain collector. The beans then advance to the upper sieve 104 and then to the lower sieve 106. The first grain collector 102 collects the separated grain particles and transports the mill and grain mixture to the front end of a pre-cleaning sieve or directly to an upper sieve 104. The pre-cleaning sieve separates a first quantity of grain seeds from the total mass of the crop material and sends its residual fraction to the upper sieve 104. The upper sieve 104 separates the small fraction from the larger particles. The residual fraction of mills, short straw and other sieve losses leaves the rear side of the upper sieve 104, while the separated fraction is processed by the lower sieve 106. The lower sieve 106 separates the fraction of clean grains from the flow fraction return.
    [0019] Referring to Fig. 3, the grain cleaning system 100 includes a blower 110 with a fan 112 and a housing 114, which substantially accommodates or houses fan 112. Fan 112 can be any fan applicable to the cleaning system of grain from a combine, therefore, a detailed description of the fan is not necessary for the complete understanding of the present invention. However, exemplary fans applicable to the present invention include a transverse fan as detailed in United States Patent No. 8,052,374, the disclosure of which is incorporated herein in full by reference. The fan 112 rotates about an axis 116 (which extends towards the page, as shown in Fig. 3) in order to generate a high speed air flow to the inlet end 118 of the cleaning shoe 108. As used in this document, the term "high speed air" is used to refer to the air flow generated by the blower 110. The blower 110 generates and directs a high speed air flow to the cleaning shoe 108 in order to release and clean the cleaning shoe 108 from materials other than grains and to help keep cleaning shoe 108 operations at normal speed.
    [0020] The housing 114 substantially encloses the fan 112 and has an air inlet 120 and an air outlet 122. The outlet 122 directs the air flow generated by the blower 110. The outlet 122 is oriented to direct the air flow in the direction illustrated by the arrows A. For illustrative purposes only, Fig. 3 shows arrows A inclined with respect to longitudinal axis 124 of cleaning shoe 108 or screens 104 and 106; however, the direction emitted by the outlet 122 can alternatively be substantially parallel to the longitudinal axis 124 of the cleaning shoe 108. The housing 114 can be configured as a simple outlet housing 114 (Fig. 3) or as an outlet housing double 314, as shown in Fig. 9 and described in more detail below.
    [0021] With reference to Figs. 3 and 4, housing 114 is configured in the form of a sectional housing. In a first aspect of the present embodiment, housing 114 includes a first part, for example, an upper part 126, and a second part, for example, a lower part 128. The upper part 126 is fixed in place in order to hold stationary. The bottom part 128 is divided into a stationary base 130 and a movable part 132 configured to move between various positions, such as a first position and a second position.
    [0022] The bottom part 128 is configured as best illustrated in Fig. 3. The base part 130 is configured so that it has a substantially circular or elliptical cross section and extends to substantially enclose or house the fan 112. The movable part 132 forms substantially the lower section of the outlet plane or the lower front end of the outlet of housing 122.
    [0023] The movable part 132 and the base 130 are configured to have an overlapping section 134. The overlapping section 134 is formed so that one of the moving part 132 and the base 130 is dimensioned to have a slightly smaller width and depth than the other so that the smaller part is received inside the other. Preferably, the base 130 is smaller than the moving part 132 so that it is received within the rear end 132a of the moving part 132. The size of the overlapping section 134 changes as the moving part 132 travels its displacement field, but the section superimposed 134 always exists. The walls of the overlapping section 134 may include a seal (not shown) embedded within a seal groove formed within one of the walls of the base 130 or the movable part 132.
    [0024] The lower part 128 and the upper part 126 are also configured to have side walls that constitute an overlapping section 136. The size of the overlapping section 136 changes as the moving part 132 and the upper part 126 move relative to each other. ; however, the overlapping section 136 remains along the displacement field of the upper parts 126 and movable 132. Maintaining the overlapping section 136 along the entire displacement field of the upper parts 126 and movable 132 with respect to each other allows the housing 114 efficiently controls the air flow generated by the blower 110 leaving the outlet of the housing 122. The side walls of the overlapping section 136 may include a seal (not shown) embedded within a seal groove formed within one of the upper parts 126 or mobile 132.
    [0025] As shown in Fig. 3, the lower part 128 has a front end 136b and a rear end. The front end 136b forms part of the outlet 122. The rear end is formed by the base 130 and substantially covers the fan 112. When the movable part 132 of the lower part 128 moves between the first and second positions, the front end 136b moves whether or to increase the size of the outlet opening 122 (Fig. 3) or to decrease the size of the outlet opening 122 (Fig. 4). This characteristic of an adjustable outlet opening of the housing 122 advantageously provides a means of increasing the speed of the air flow generated by the blower 110 when it operates at a fixed or maximum number of RPM (revolutions per minute). This is especially advantageous when the blower 110 operates at a maximum production speed or number of RPM, so that it is not possible to generate a faster air flow through the blower fan. In other words, it is possible to advantageously increase the speed of the air flow generated by the blower 110 when the blower 110 is operating at maximum capacity by decreasing the size of the outlet 122 in order to increase the pressure and air speed that leave exit 122.
    [0026] For greater advantage, housing 114 also offers a way to produce one or more faster air pulses that leave outlet 122 alternating between the first and second positions. For example, the bottom 128 can move between the first and second positions in a relatively short time, such as 1, 5, 10 or 15 second intervals or 1, 2, 3, 4 or 5 minute intervals, at in order to produce one or more faster air pulses, which are directed to the inlet end of the cleaning shoe 108.
    [0027] Preferably, the movable part 132 of the lower housing 128 is configured to move between various positions pivoting around the axis 116. As the movable part 132 pivots around the axis 116, it moves between a first position (Fig. 3) and a second position (Fig. 4). The movable part 132 can be configured to move between positions by means of an actuator, cylinder, motor or any other means suitable for the intended use of moving it. Preferably, the movable part 132 is moved by an actuator 138.
    [0028] In an alternative aspect, as shown in Fig. 16, the moving part 132 pivotally connects to the base 130 to pivot around axis 116 'instead of axis 116. An actuator (not shown) connects properly to the movable part 132 to cause its pivoting movement around the axis 116 '.
    [0029] Referring to Fig. 5, housing 114 includes a cam 140. Cam 140 can be positioned around the front end 136b of the movable part 132 of the lower housing 128, a rear end of the movable part 132a or a front end of the base 130 and, preferably, around a side wall of the lower housing 128. Cam 140 is structured similar to a cylindrical cam system, which includes a cam slot 142 and a cam follower 144. Cam 140 directs moving the movable part 132 of the lower housing 128. More specifically, the cam 140 is configured to move the front end 136b in a substantially vertical direction or to increase or decrease the size of the outlet 122.
    [0030] With reference to Figs. 6 and 7, in a second aspect of the present embodiment, the present invention includes a housing 214 with a first part, for example, a rear part 230, and a second part, for example, a front part 226. The rear part 230 is fixed in place to keep stationary. The front part 226 differs from the rear part 230 and is movable between various positions, such as a first position and a second position. Preferably, the front part 226 differs from the rear part 230 in a substantially vertical plane or slightly inclined with respect to the vertical plane. However, the front part 226 and the rear part 230 are configured to have an overlapping section 234. The overlapping section 234 is formed so that one of the front part 226 and the rear part 230 is dimensioned to have a width and depth of one slightly smaller than the other so that the smaller part is received within the larger one. Preferably, the rear part 230 is smaller than the front part 226 so that it is received within the rear end 226a of the front part 226. The size of the overlapping section 234 changes as the front part 226 moves along its field displacement, but overlapping section 234 always exists.
    [0031] Preferably, the front part 226 is configured to move between various positions pivoting around an axis 216. As the front part 226 pivots around axis 216, it moves between a first position (Fig. 6) and a second position (Fig. 7). The front part 226 can be configured to move between positions by means of an actuator, cylinder, motor or any other means suitable for the intended use of moving it. Preferably, the front part 226 is moved by an actuator 238.
    [0032] When in the first position (Fig. 6), the front part 226 directs the air flow leaving the housing 214 along the direction of the arrows B. However, when the front part 226 moves to the second position (Fig. 7 ), it directs the air flow leaving housing 214 along the direction of arrow C. The flow directions illustrated by arrows B and C are different, that is, they are inclined at different angles to the horizontal plane, such as the horizontal plane of the ground. The preceding feature of housing 214 configured to direct the airflow that leaves it advantageously enables cleaning system 100 to better release cleaning shoe 108 when transient effects occur.
    [0033] Referring again to Figs. 2 and 4, in a third aspect of the present embodiment, the upper part 126 can, alternatively, be configured to move independently of the movable part 132. For example, the upper part 126 can, optionally, be moved by an actuator 138 ', which connects and communicates operationally with a controller 142 (as discussed in more detail below). The upper part 126 can pivot or be moved linearly in order to effect a change or redirect of the flow leaving the outlet 122 like the embodiment of the housing 214 discussed above.
    [0034] With reference again to Fig. 2 and also to Fig. 8, the grain cleaning system 100 includes one or more, or several, sensors 140. A sensor 140 is configured to detect or perceive various operating parameters of the cleaning shoe 108 and / or blower 110, or related thereto. A sensor 140 connects to one of the screens 104 or 106 of the cleaning shoe to monitor it and detect transient effects of the crop material on screens 104 and 106. A sensor 140 also connects to the outlet part of the blower housing 114 to monitor a blower operating parameter, such as direction, speed and / or air flow pressure. For example, sensor 140 may be a presence detection sensor or a grain loss sensor, as disclosed, for example, in United States Patent No. 7,403,846, the disclosure of which is incorporated herein in full by reference. . Thus, the sensor 140 of the cleaning shoe sieve can, for example, detect the presence of a transient effect, the distribution and thickness of the crop material that passes through the cleaning shoe 108 or grain loss. However, sensor 140 is not limited to the above means for detecting transient effects and can be any sensor capable of detecting any transient-related attribute suitable for the intended use of the present invention. In addition, the present invention may include one or more, or several, sensors 140 to detect various attributes related to transient effects, such as volume, mass, density of crop materials, air flow rate, air pressure or flow speed of air leaving or entering the cleaning shoe 108.
    [0035] Alternatively, sensor 140 may be a flow rate, air pressure sensor or flow speed sensor 140 'positioned at the outlet end 108b of cleaning shoe 108 in order to monitor and detect the flow rate, the air pressure or the speed of the air flow leaving the cleaning shoe 108. The flow rate, air pressure or flow speed sensor 140 'can also be positioned at the outlet end 108b of the cleaning shoe 108 and on a receiving surface of sieves 104 or 106 in order to independently monitor an upper airflow stream, which flows through the upper sieve 104, and a lower airflow stream, which flows through the lower sieve 106, each one of which leaves the cleaning shoe 108 at the rear of the combine 10.
    [0036] The flow rate, air pressure and / or flow rate sensor 140 'can also be positioned under sieves 104 and 106 to monitor flow rate, air pressure and / or air flow speed that passes through sieves 104 and 106. In this arrangement, several flow rate, air pressure and / or flow rate sensors 140 'can be used to monitor flow rate, air pressure and / or speed of the flow through sieves 104 and 106 (ie, monitoring the vertical flow rate / vertical flow rate).
    [0037] The grain cleaning system 100 includes a controller 142. Controller 142 may be part of the combine control system 144 or be an independent controller 142 in communication with the harvest control system 144. Controller 142 connects and communicates operationally with blower 110 and sensor 140, or with each of several sensors 140, if applicable. Controller 140 may be implemented in the form of a computer, a logic controller, different electronic circuits or software associated with control system 144.
    [0038] When sensor 140 connects to one of the cleaning shoe screens 104 or 106, controller 142 is configured to monitor cleaning shoe 108. When monitoring cleaning shoe 108, controller 142 monitors the productivity of shoe operations cleaning in steady state. The operations of the cleaning shoe 108 in steady state occur when the crop materials that move along the screens of the cleaning shoe 108 are distributed substantially uniformly across the receiving surface of the screens and grain losses occur at a level acceptable. Transient effects occur, for example, when a large aggregate mass of the crop material accumulates or is deposited on the receiving surface of the cleaning shoe sieves. For example, when harvester 10 is going down a hill, the movement of the threshing material over the first grain collector 102 slows down and it is possible for a thick layer to form on it. When harvester 10 suddenly starts to rise, this crop material quickly moves backwards, resulting in a pile or aggregate larger than normal for crop material accumulation, resulting in a stack of crop material displacing through the cleaning shoe 108. This resulting transient effect can be detected by sensor 140, for example, as a drop in the loss values in the sieve. Additional details regarding the operation and devices to measure transient effects are disclosed in United States Patent No. 7,403,846, the disclosure of which is incorporated herein in full by reference. In short, sensor 140 detects a change in the operational parameter of productivity at steady state along the cleaning shoe 108.
    [0039] Upon detecting a transient effect inside the cleaning shoe 108, the controller 142 changes the air flow, air flow pressure and / or the speed of the air flow generated by the blower 110 at the inlet end of the cleaning shoe 108 for a second direction, a second air flow pressure and / or a second air flow speed in response to the detection of the transient effect in the crop material on the cleaning shoe sieves. This can be accomplished by moving the front part 226 of the blower 110 as discussed above. That is, when a transient effect occurs within the grain cleaning system 100, sensor 140 detects it and communicates its presence to controller 142. Controller 142 then moves front part 226 to a predetermined position to cause the air flow leaving housing 214 is redirected to a second direction different from the first, air pressure is changed, that is, increased or decreased, and / or the flow rate is changed, that is, increased or decreased, to in order to counterbalance or decrease the transient effect. The predetermined position can be one of several predetermined positions stored in the memory of controller 142 associated with the position of the detected transient effect or the type of detected transient effect. In short, by redirecting the air flow generated, the air flow pressure and / or the speed of the air flow generated by the blower 110 and entering the cleaning shoe 108, the aggregate accumulation of crop material and the ideal distribution of the air flow through the cleaning shoe 108 is promoted.
    [0040] Controller 142 can also be configured to, when redirecting the air flow entering the cleaning shoe, redirect it in such a way as to produce an oscillating pattern of the air flow entering the cleaning shoe 108. This can be accomplished, for example, repeatedly switching the front part 226 between the first and second positions, or throughout its entire travel range.
    [0041] After controller 142 redirects the flow of air entering cleaning shoe 108 to the second direction, it continues to monitor cleaning shoe 108 for transient effects. If, after a predetermined period of time since controller 142 redirected the airflow, the transient effect is still detected, controller 142 is configured to move the front part 226 to another position in order to redirect the airflow again to a third position. Therefore, this process of redirecting the flow of air entering the cleaning shoe 108 is repeated until the transient effect is no longer detected. Upon detecting the absence of transient effects, controller 142 redirects the air flow back to the first direction or to a direction related to a predetermined operating condition in the steady state.
    [0042] As discussed above, sensor 140 may be an airflow rate or airflow velocity sensor 140 'that connects to the outlet end 108a of cleaning shoe 108. In this arrangement, controller 140 is configured to monitor and detecting one of the flow rate and flow speed of the air flow leaving cleaning shoe 108 in order to assess the operational efficiency of cleaning system 100. These flow rate and flow rate sensors 140 ' are well known in the art, and a detailed description of their structure, function and operation is not necessary for a complete understanding of the present invention. In short, sensor 140 'detects a change in the operational parameter of the rate or speed of the outgoing air flow in the cleaning shoe 108.
    [0043] Controller 142 and sensor 140 'operate in substantially the same manner as described above when used in conjunction with sensor 140, except that controller 142 is now configured to redirect the airflow leaving blower housing 114 upon detecting a change in rate flow rate or the flow rate left by the cleaning shoe 108.
    [0044] The preceding description of the cleaning system 100 has been elaborated with reference to a single outlet blower 110. However, with reference to Fig. 9, according to another preferred embodiment, the sectioned housing 114 can also be applicable to a blower housing double outlet blower 314. In a delivery with a double outlet blower, the dual outlet blower housing 314 includes an upper outlet 322a and a lower outlet 322b. The upper outlets 322a and lower 322b are formed on the outer walls of the housing 214 and an internal air duct member 332. The air duct member 332 divides the air flow generated by the fan 312 so that it leaves the housing 314 through or the top outlet 322a or the bottom outlet 322b. Other double outlet blower housings applicable to the present invention are disclosed in United States Patent Application Publication No. 2002/0037758 and United States Patent No. 3,813,184, the disclosures of which are incorporated herein by reference.
    [0045] As an option, the air duct member 332 can be configured to move between a first position and a second position, or between several positions in relation to the housing 314. The air duct member 332 can be installed in an adjustable manner in the housing blower 314 and powered by an actuator, cylinder, motor or the like. Preferably, the air duct member 332 operationally connects to one or more actuators 324, which move it in the vertical direction, that is, up and down. Alternatively, the air duct member 332 can be configured to pivot about an axis extending in the direction of length through the housing 314 to allow the reduction or widening of the upper outlets 322a and lower 322b. Actuator 324 and blower 310 connect and communicate operationally with controller 142, which also connects and communicates operationally with sensors 140. Sensors 140 are as described above in the embodiment of the single outlet blower of the present invention.
    [0046] Thus, controller 142 is configured to move air duct member 1332 from housing 314 in response to the detection by sensor 140 of a change in or related to an operating parameter of cleaning shoe 108. For example, when sensor 140 detects less airflow leaving the upper sieve section of cleaning shoe 108, controller 142 moves air duct member 332 up and / or down to cause an increase or change in the speed of the air flow leaving the upper outlet 332a or the lower outlet 332b.
    [0047] With reference to Figs. 10 and 11, in another embodiment, the present invention proposes a grain cleaning system 100 that includes the blower 410 and a mobile air deflector 432 positioned downstream of the blower 410. Preferably, the air deflector 432 is configured as illustrated Figs. 10 and 11, with a substantially triangular cross section. The air detector 432 has a tip 432a and a concave tail 432b for installation in a cylindrical member 440 of the combine 10 positioned upstream of the outlet 422 of the blower 410. The air deflector 432 is pivotally installed in the cylindrical member 440 a in order to pivot around an axis 442 substantially parallel to the axis of rotation 444 of fan 412. When air deflector 432 is installed on cylindrical member 440, its tip 432 is upstream of the air flow that leaves blower 410 at the outlet 422, while tail 432b is downstream of tip 432a.
    [0048] Air deflector 432 can be moved to pivot around axis 442 by one or more actuators 438 or motors. Actuator 438 connects to air deflector 432 via a connection 446, which can connect to air deflector 432 in any number of positions along the longitudinal length of air deflector 432. Alternatively, actuator 438 connects to the cylindrical member 440 to which the air deflector 432 is rigidly connected in order to pivot both the cylindrical member 440 and the air deflector 432.
    [0049] Air deflector 432 also connects and operationally communicates with controller 142. Controller 142 is configured to control and move air deflector 432 around various positions in relation to the direction of the air flow entering the cleaning shoe. 108.
    [0050] Preferably, the air deflector 432 is configured and oriented to direct the air flow generated by the blower 410 to upper and lower air currents. The upper airflow is directed to serve as the primary airflow current for the upper sieve 104, while the lower airflow is directed to serve as the primary airflow current for the lower sieve 106. The air deflector air 432 advantageously makes it possible to concentrate the air flow at higher speeds through the different individual screens 104 and 106 of the cleaning shoe 108.
    [0051] The controller 142 operationally connected and in communication with the air deflector 150 can also be configured with a set of defined reasons for the air flow divided between the upper and lower currents stored in memory. The reasons for the air flow between the upper and lower streams are defined based on the flow rate or flow speed that leaves the cleaning shoe 108. More specifically, the flow ratios (either the flow rate or the flow rate) the upper and lower streams are inversely proportional to the measured flow rate that leaves the outlet end of the cleaning shoe 108. For example, when a transient effect occurs within the cleaning system, the measured flow rate that leaves the outlet end cleaning shoe 108 in the upper sieve 104 is smaller than that of the lower sieve 106. In this case, the controller 142 re-positions the air deflector 432 to divert, for example, 2/3 of the air flow generated by the fan 412 to the upper stream , which is directed to pass through the upper sieve 104, and 1/3 of the air flow generated to the lower stream, which is directed to pass through the lower sieve 106. Alternatively, the flow rate to the upper sieve can for example, 7/8, 3/4 or 5/8 of the air flow generated by fan 412. In this configuration, cleaning shoe 108 is configured with individual sensors 140 to detect flow rate or speed flow that leaves the cleaning shoe 108 at the height of both the upper sieve 104 and the lower sieve 106.
    [0052] Controller 142 can also connect and communicate operationally with a blower motor 111 and with one or more sensors 140. In this configuration, controller 142 is configured to modify the speed of rotation of the blower fan in response to the detection of a change in a cleaning system parameter in relation to the steady state. These operational parameters include a transient effect on a cleaning shoe sieve 108, the cleaning shoe outlet flow rate 108, the cleaning shoe 108 outflow rate or combinations thereof.
    [0053] Although the previous embodiments have been described with reference to a single blower housing (see, for example, Fig. 11), the preceding embodiments described above can be configured with a blower with several blower housings 514, as illustrated, for example , Fig. 12. In this configuration with several blower housings, each individual housing 514a is configured with an actuator to move the respective parts of the respective housing 514 between the first and second positions in order to cause a change in the air flow direction , the rate of air flow or the speed of the air flow leaving housing 514, as described in more detail in the above embodiments.
    [0054] Referring again to Figs. 1 to 4, in operation, harvester 10 harvests harvest material, which is received through feeder housing 20 and moved to the threshing and separation section 18. The processed harvest material, for example, grains, then passes through the harvester 10, to grain collectors and sieves 104 and 106, which generally swing back and forth to transport the threshed and separated grains from the first grain collector 102 to the pre-cleaning sieve and the second grain collector and, sieves 104 and 106. The same oscillating movement spreads the grains along sieves 104 and 106, while allowing gravity to pass the cleaned grains through the openings in the sieves. The beans in the sieves 104 and 106 are subjected to a cleaning action by the blower 110, which generates high-speed air flow through the sieves to remove the mill and other impurities, such as dust, from the grains by air transporting this material for discharge from the harvester 10. The cleaned grains then fall into the gutter of a clean grain conveyor (not shown) and are thereafter transferred by the conveyor and a lifting mechanism (not shown) to the grain tank 14. The ears are not fully the so-called "refuse", do not pass through the upper sieve 104, but when they reach the end of it, they fall into the chute of a refuse conveyor (not shown). The refuse is transported laterally by that conveyor to a re-mixer and returned by a refuse elevator to the first grain collector 102 for further cleaning action Rotors at the upper end of the refuse elevator spread the returned crop over the entire width of the grain collector 102. The mechanism described above for the refuse conveyor, redefiller and refuse elevator is also called the "return flow system". Additional details regarding the structure and operation of cleaning system 100 are discussed in detail United States Patent No. 7,403,846, the disclosure of which is incorporated herein in full by reference.
    [0055] As mentioned above, overloading the upper sieve 104 of the cleaning system 100 can result in considerable grain losses. Throughout the description, reference was made to a variation in the pitch of the field as a cause of the temporary overload of the upper sieve in a grain cleaning system. However, it is clear from the description of the present invention that overload problems caused by other transient effects, for example, increased production load at certain points in the field or changes in the threshing settings of the combine, can also be solved by the method improved in accordance with the present invention.
    [0056] For purposes of example only, the preceding operation of the present invention has been described with reference to the detection of transient effects within the cleaning shoe 108 of the combine 10. As illustrated in Fig. 13, the transient effects result, for example, in an aggregated pile of crop material in the upper sieve 104. For example, when harvester 10 is descending a hill, the movement of the threshing material over the first grain collector 102 slows down and it is possible for a thick layer to form on it. When the combine suddenly starts to rise, this material quickly moves backwards and forms a pile of threshing material 24 on the front section of the upper sieve 104. This local pile of harvest material 24 moves backwards on the upper sieve 104 until leave the machine by the end of the upper sieve 104, which can be registered, for example, by a sudden increase in a loss signal in the sieve. The sudden increase in losses in the sieve can be detected by monitoring consequent values of losses in the sieve with sensor 140.
    [0057] The presence of an aggregate accumulation of crop material 24 is detected by sensor 140, which then signals to controller 142, which redirects the air flow generated through the blower 110. The redirected air flow results in the interruption of the aggregate accumulation of crop material, which helps maintain optimal processing parameters and conditions for cleaning shoe 108, as shown in Fig. 13A. That is, maintaining ideal processing parameters and conditions results in lower losses in the sieve and higher yield of harvested harvest materials.
    [0058] With reference to Fig. 14, according to another preferred embodiment, the present invention proposes a method for releasing a grain cleaning system 100 from a combine. The method includes the step of generating and directing a high speed airflow in a first direction at an inlet end of a cleaning shoe 108. The high speed airflow can be generated and directed by a blower 110 (Step 602). The cleaning shoe 108 extends along a direction substantially parallel to the longitudinal direction of the combine 10, i.e., the front to back direction. The method also includes the step of monitoring the cleaning shoe 108 in order to detect a change in an operational parameter thereof (Step 604). These monitored operating parameters may include transient effects on a cleaning shoe sieve 108, as well as flow rates and / or flow speeds that leave cleaning shoe 108 or pass through cleaning shoe sieves 108. In addition, the method includes the step of redirecting the high-speed airflow at the inlet end of the cleaning shoe 108 to a second direction in response to a detected change in the operating parameter (Step 606). The second direction is different from the first and can include multiple directions, in-elusive, or exclusive, the first direction.
    [0059] With reference to Fig. 15, according to yet another preferred embodiment, the present invention proposes a method for releasing a grain cleaning system from a combine. The method includes the step of providing a blower to generate air flow in a first direction towards the inlet end of a cleaning shoe (Step 702) and monitoring the air flow generated by the blower in order to detect a change in a operational parameter (Step 704). The method also includes the step of modifying at least one of the direction, speed and pressure of the air flow in response to the detection of a change in the operational parameter (Step 706).
    [0060] Referring to Fig. 17, according to another preferred embodiment, a blower 610 is illustrated with a housing 614 that includes an outer housing wall 616 and an inner housing wall 618. The outer housing wall 616 remains stationary. The inner housing wall 618, which is configured similarly to the movable part 132, connects to the housing 614 so that it moves between first and second positions, similar to the movable part 132 described above. That is, the inner housing wall 618 is configured to pivot around the axis 116 within the outer housing wall 616 in order to effect a change in the direction, pressure and / or speed of the air flow that leaves the blower 610.
    [0061] Those skilled in the art will realize that it is possible to modify the embodiments described above without departing from their broad inventive concept. For example, other components and steps can be added to the various embodiments of the grain cleaning system. It is clear, therefore, that the present invention is not limited to the specific embodiments disclosed, but is intended to cover modifications within its scope and essence as defined in the appended claims.
    权利要求:
    Claims (15)
    [0001]
    Method for cleaning a grain cleaning system (100) from a harvester (10), comprising a cleaning shoe (108) and a blower (110/610) having a housing (114/214/514/614) in around a fan (112/212), the method comprising the steps of: supply and direct a high-speed air flow (A) through an outlet (122) of the housing (114/214/514/614) in a first direction around an inlet end (118) of a cleaning shoe (108); monitor the cleaning shoe (108) in order to detect a change in an operating parameter of the cleaning shoe; and redirect the high speed air flow (A) around the inlet end (118) of the cleaning shoe (108) to a second direction in response to a detected change in the operational parameter, FEATURE that the housing (114/214/514/614) comprises a first part (130) and a second part (132/226) movable between a first position and a second position and in which the high-speed air flow is redirected by moving at least the second part (132/226) of the housing (114/214/514/614) adjacent to the inlet end (118) of the cleaning shoe (108).
    [0002]
    Method, according to claim 1, CHARACTERIZED by the fact that moving at least part (132) of the housing (114/614) changes the size of the outlet (122) of the housing (114/214/514/614).
    [0003]
    Method, according to claim 1 or 2, CHARACTERIZED for still comprising the step of redirecting the air flow (A) at high speed to the first direction in response to the operational parameter that returns to its original value.
    [0004]
    Method according to claim 1, 2 or 3, CHARACTERIZED by the fact that the operational parameter is a transient effect of the harvest material on a sieve (104) of the cleaning shoe (108), a flow rate of the air around an outlet end (108b) of the cleaning shoe (108), a flow velocity of the air flow around the cleaning shoe (108), air pressure or combinations thereof.
    [0005]
    Method according to any one of the preceding claims, CHARACTERIZED by the fact that the redirect step comprises redirecting the air flow (A) at high speed to oscillate around the inlet end (118) of the cleaning shoe (108) .
    [0006]
    Method, according to any one of the previous claims, CHARACTERIZED by the fact that it still comprises modifying the fan rotation speed (112/212) in response to the detection of a change in the operational parameter.
    [0007]
    Combine harvester, comprising: a support structure (22); and a grain cleaning system (100) mounted on the support structure, the grain cleaning system including: a cleaning shoe (108) with a sieve (104,106), a sensor (140) for detecting at least one operating parameter of the cleaning shoe (108); and a blower (110/610) comprising a housing (114/214/514/614) and a fan (112/212) rotating in it to blow a flow (A) of air through an outlet (122) of the shoe housing cleaning (108); and a controller (142) operationally connected to and in communication with the blower (110/610) and the sensor (140), wherein the blower (110/610) is configured to provide an air flow (A) between at least a first direction and a second direction to blow the air flow into the cleaning shoe (108) in response to the sensor (140 ) detect a change in at least one operational parameter, FEATURED by the fact that the housing (114/214/514/614) includes a first part (126/230) and a second part (132/226) movable between a first and a second position, the outlet (122) being formed at least one of the first and second parts, and in which at least the second part (132/226) of the housing (114/214/514/614) is operatively connected to the controller (142) to move said second part (132 / 226) between the first position and the second position to change the direction of the air flow (A) into the cleaning shoe (108).
    [0008]
    Combine harvester according to claim 7, CHARACTERIZED by the fact that the movement of the moving part (132) between the first and second positions is operable to change the size of the outlet (122) of the housing (114/614).
    [0009]
    Combine harvester according to claim 7, CHARACTERIZED by the fact that the first part (126/230) of the housing (114/214/514/614) is fixed in one position.
    [0010]
    Combine harvester according to claim 7 or 9, CHARACTERIZED by the fact that the first part is an upper part of the housing (126) and the second part is a lower part of the housing (128).
    [0011]
    Combine harvester, according to claim 7, CHARACTERIZED by the fact that the outlet (122) is completely formed by the moving part (132/226).
    [0012]
    Combine harvester according to any of claims 7 to 11, CHARACTERIZED by the fact that the housing (114/214/514/614) includes a cam (150) to direct movement of the moving part (132/226) between the first and second positions.
    [0013]
    Combine harvester according to any of claims 7 to 12, CHARACTERIZED by the fact that the controller (142) is configured to modify a fan rotation speed (112/212) when detecting a change in at least one operational parameter.
    [0014]
    Combine harvester according to any one of claims 7 to 13, CHARACTERIZED by the fact that the second portion (132/226) is moved by an actuator (138/238), a cylinder, a solenoid or combinations thereof.
    [0015]
    Combine harvester according to any one of claims 7 to 14, CHARACTERIZED by the fact that the operational parameter is a transient effect on the sieve, an air flow rate, an air flow rate, air pressure or their combinations.
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    EP2740347B1|2017-06-28|
    BR102013031235A8|2019-09-10|
    US20140308997A1|2014-10-16|
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    法律状态:
    2015-11-03| B03A| Publication of an application: publication of a patent application or of a certificate of addition of invention|
    2017-10-31| B25D| Requested change of name of applicant approved|Owner name: CNH INDUSTRIAL AMERICA LLC (US) |
    2018-03-06| B06F| Objections, documents and/or translations needed after an examination request according art. 34 industrial property law|
    2018-03-13| B06F| Objections, documents and/or translations needed after an examination request according art. 34 industrial property law|
    2018-03-20| B06I| Technical and formal requirements: publication cancelled|Free format text: ANULADA A PUBLICACAO CODIGO 6.6.1 NA RPI NO 2462 DE 13/03/2018 POR TER SIDO INDEVIDA. |
    2019-09-10| B03H| Publication of an application: rectification|Free format text: REFERENTE AO CODIGO 3.1 PUBLICADO NA RPI2339 DE 03/11/2015 RELATIVO AO CAMPO INID (72) NOME DO INVENTOR E (30) DADOS DA PRIORIDADE UNIONISTA. CONSIDEREM-SE OS DADOS ATUAIS. |
    2019-10-01| B06U| Preliminary requirement: requests with searches performed by other patent offices: suspension of the patent application procedure|
    2020-02-04| B06A| Notification to applicant to reply to the report for non-patentability or inadequacy of the application according art. 36 industrial patent law|
    2020-08-04| B09A| Decision: intention to grant|
    2020-12-01| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 04/12/2013, OBSERVADAS AS CONDICOES LEGAIS. |
    优先权:
    申请号 | 申请日 | 专利标题
    US13/706.868|2012-12-06|
    US13/706,868|US8821229B2|2012-12-06|2012-12-06|Grain cleaning system for an agricultural combine|
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