• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A work machine (10) comprises a cabin (18) with a door (86) and an accessible platform (94) adjacent to the door (86) and / or a ladder (90) with steps (92) arranged one above the other, as well as a cleaning device to act on the platform (94) and / or the steps (90) with an air stream.
    公开号:BE1027337A9
    申请号:E20200044
    申请日:2020-04-28
    公开日:2021-03-15
    发明作者:Stefan Bohrer
    申请人:Deere & Co；
    IPC主号:
    专利说明:

    Work machine with a platform and / or steps leading to the operator's workstation. The invention relates to a work machine, with a supporting structure that can be moved in a forward direction, a cabin attached to the supporting structure, which comprises an operator's workstation and a door, and a cabin that is accessible to the side of the door adjacent, machine-fixed platform and / or a stairway with steps arranged one above the other. BACKGROUND ART Agricultural working machines are often used in operating environments in which they are exposed to a relatively high level of exposure to dust and other particles. This is especially true when harvesting in dry crop conditions, both for the harvesting machine and for transport vehicles in the form of trailers pulling agricultural tractors. Accordingly, unwanted particles collect at many points on the work machine.
    Since these are usually undesirable and increase the risk of fire, especially in the vicinity of parts that heat up during operation (in particular the drive engine and exhaust system), it was proposed in the prior art to blow away the particles, for which part of the cooling air flow is branched off and open in the prior art cleaning areas of the work machine conducts (see, for example, DE 24 18 054 C3 with the application of a drive belt and a feeder housing of a combine harvester with the flow of cooling air, EP 0 443 210 A1 and EP 3 114 918 A1 with application of the engine maintenance platform located on the top of the combine harvester, EP 1 516 524 Al with loading of a separating device, EP 2 246 542 Al with
    Application of an exhaust particle filter) or the air flow of a suction fan is used to blow the impurities away, which in turn sucks impurities from the cooling air sieve (EP 2 368 417 A1 with application of the engine compartment, a crop processing device, frame or carrier of the harvesting machine). Task It must be noted, however, that not only in the areas of the machine subject to a stream of cleaning air in the prior art, but also on the steps leading to the operator's workplace in a cabin and on a platform adjacent to the cabin (see DE 10 2012 216 307 B3) accumulate impurities. It would therefore be desirable to also remove the contaminants from the steps and / or the platform.
    Solution According to the invention, this object is achieved by the teaching of patent claim 1, the further patent claims citing features that further develop the solution in an advantageous manner.
    A working machine is provided with a supporting structure that can be moved in a forward direction, a cabin attached to the supporting structure, which comprises an operator's workstation and a door, and an accessible, machine-fixed platform adjacent to the side of the door and / or a ladder with steps arranged one above the other, as well as with a cleaning device for applying an air stream to the platform and / or the steps.
    In this way one avoids the undesired accumulation of impurities on the platform and / or the steps.
    The cleaning device can comprise a first wall which is adjacent to the steps and / or the platform and forms a cavity with a second wall to which pressurized air can be applied, the second wall containing nozzles oriented towards the platform and / or steps .
    The nozzles can act on the platform and / or steps in a vertical and / or tangential direction with the air flow.
    The cleaning device can comprise an openable flap which, in the open state, allows impurities that have collected in the cavity to fall out by gravity or enables the cavity to be cleaned manually.
    The air flow can be generated by a fan, which is used to generate a cooling air flow or to extract a cooling air filter.
    The air flow can be switched off. For this purpose, the air flow can be controlled by a controller that is connected to an input device for inputting an operating state of the machine and / or a sensor for detecting an operator condition. If it can be seen from the entered operating status that the operator will be leaving the cab via the platform or steps for the foreseeable future, which can be seen, for example, by switching off a crop processing device, the air flow can be switched off by the control system. The same procedure can be used if the sensor detects that the operator is getting up from his seat or touching the door handle. In this way one prevents
    that the air flow carries contaminants into the interior of the cabin.
    Exemplary embodiment An exemplary embodiment of the invention is explained with the aid of the figures. 1 shows a schematic side view of a self-propelled work machine in the form of a forage harvester from the right side, and FIG. 2 shows a view of the work machine from the left side.
    In FIG. 1, a work machine 10 in the manner of a self-propelled forage harvester is shown in a schematic view from the right side. The work machine 10 is built on a chassis with a frame 12 which is supported by front driven wheels 14 and steerable rear wheels 16. The work machine 10 is operated from an operator's workstation in a driver's cab 18, from which a header 20 in the form of a pick-up can be viewed. By means of the header 20 picked up crop, z. B. grass or the like is fed to a chopping device 26 in the form of a chopping drum arranged below the driver's cab 18 via an intake conveyor 22 with pre-press rollers, which are arranged inside a intake housing 24 on the front side of the forage harvester 10, which chops it into small pieces and gives it a Post-shredding device 32 and then a conveyor device 28 gives up. The goods leave the working machine 10 to a transport vehicle driving alongside via a discharge chute 30, the upper part of which is rotatable about an approximately vertical axis and adjustable in inclination. In the following, direction information, such as laterally, below and above, relate to the forward direction V of the work machine 10, which runs to the right in FIG. 1. The present invention can also be applied to others
    Types of harvesting machines can be used as forage harvesters, such as combine harvesters or cotton pickers or mowing vehicles, or other types of working machines 10, such as farm tractors.
    5 The energy supply to drive the header 20, the intake conveyor 24, the re-shredding device 32 and the conveyor device 28 as well as other driven elements and actuators of the work machine 10 takes place (via mechanical, hydraulic and / or electrical drive trains) by an internal combustion engine 34, which is located above the rear Wheels 16 is arranged within an engine compartment 36. The engine compartment 36 is delimited on both sides by side walls 38, to the rear by a rear wall 40 and to the top by a roof 42. The walls 38, 40 and the roof 42 generally do not have a load-bearing function, but only serve to seal off the internal combustion engine 34 from the outside and are attached to struts (not shown) that are attached to the frame 12 and carry them. The walls 38, 40 and possibly, but not necessarily, the roof 42 are provided with slot-shaped openings 44 through which air can escape. An exhaust 46 of the internal combustion engine 34 also extends through an opening in the roof 42.
    The engine compartment 36 is delimited at the front by a screen device 48 which comprises a circular, perforated filter element which can be set in rotation by a drive about its central axis extending horizontally and in the forward direction V. In addition, the filter element has a cleaning device 50, which removes impurities from the front and / or back of the filter element with brushes and sucks it off with a suction fan 118 (described in more detail in EP 1 134 379 A2 and EP 2 368 417 A1, the disclosures of which are by reference is included in the present documents). At the rear of the sieve device 48 there is a driven fan 54 with an axis of rotation running coaxially to the central axis 52.
    At the rear of the fan 54 are various coolers 56, which include an oil cooler of the
    Internal combustion engine 34, a charge air cooler, a hydraulic oil cooler and an evaporator for an air conditioning system for the driver's cab 18 can act. It would be possible to swap the positions of the fan 54 and the cooler 56. At the top and to the sides, the screen device 48, the fan 54 and the cooler 56 are sealed by a housing 58 in order to concentrate the air flow. After passing through the cooler 56, the air flow still flows around the internal combustion engine 34 and then passes through the openings 44 to the outside. Incidentally, it would also be conceivable to equip the machine 10 with two or more internal combustion engines 34 and associated coolers 56. On the front of the screening device 48, a walk-in interior space 60 is formed, which is bounded towards the front by a wall 62 located behind the rear wall of the driver's cab 18, the rear wall 64 of the fixed, lower part of the discharge chute 30 and the housing of the conveyor device 28. The interior 60 is delimited at the top by a roof 66 equipped with air inlet slots 68. During operation, the fan 54 sucks in the ambient air through the air inlet slots 68. Finally, the interior space 60 is delimited to the side by walls 70 into which a door 72 is inserted. On the underside of the interior space 60 there is a fuel tank 74 which protrudes outwardly beyond the walls 70 and the frame 12 and can be filled via a nozzle 84.
    Reference is now made to FIG. The cabin 18 comprises a lateral, outwardly opening door 86 which is composed of an outer frame and a pane embedded therein. The front or rear end of the door 86 is movable about an approximately vertically extending door pivot axis 88 in order to allow the operator access to the interior of the cabin 18. The ascent to the cabin 18 takes place via a staircase 90, which comprises steps 92 arranged one above the other, as well as via a platform 94 laterally adjacent to the cabin 18
    Front wheel 14 is located, it could also be rotatable about the vertical axis and brought into a position located to the left of the left front wheel 14 (see DE 10 2012 216 307 B3). The platform 94 and the steps 92 are provided with openings in a manner known per se so that the operator does not slip and any dirt on the underside of his shoes is stripped off. In addition, the steps 90 and the platform 94 are assigned railings, which are not shown in FIG. 2 for reasons of clarity.
    The platform 94 comprises a first, lower wall 96 and a second, upper wall 98, which is provided with nozzles 100 designed as an opening. Accordingly, a cavity is formed between the walls 96 and 98, which is closed except for the nozzles 100 and a connecting line 102 to the air outlet of the suction fan 118 of the cleaning device 50 (and a cavity formed between walls 104, 106, see below). The suction fan 118 of the cleaning device 50 thus provides an air flow, as is described in EP 2 368 417 A1, which flows up through the nozzles 100 and frees the platform 94 from undesired impurities. The nozzles 100 can simultaneously form the openings of the platform 94 described in the previous paragraph or can be arranged at a certain distance below the actual step surface of the platform 94, which is provided with openings (see DE 10 2012 216 307 B3). A first, front wall 104 and a second, rear wall 106, which is provided with nozzles 100 designed as an opening, are likewise provided on the front side of the ascents 90. Above the nozzles 100 there are baffles 120 directed obliquely backwards and downwards. Accordingly, a cavity is formed between the walls 104 and 106, which is closed except for the nozzles 100 and the connecting line 102 to the air outlet of the cleaning device 50 (and the cavity formed between the walls 96, 98). The suction fan 118 of the cleaning device 50 thus provides an air flow that is directed through the nozzles 100 obliquely from above and backwards and thus flows approximately tangentially from above onto the steps 92 and frees the steps of the ascents 90 from undesired impurities. In another embodiment, the air flow can hit the steps 92 obliquely from below or precisely from below or above. A manually openable flap 108 is provided on the first wall 96, which, if necessary, enables dirt to be removed from the cavity between the first and second walls 96, 98 (associated with the platform 94) by gravity and / or manually. At the bottom of the cavity between the first wall 104 and the second wall 106 (or in the first wall 104) there is also a manually openable flap 110, which, if necessary, allows dirt to be removed from the cavity between the ( the first and second walls 104, 106 assigned to the ascents 90. In FIG. 2, the flaps 108, 110 are shown in their open position in dashed lines. The flap 108 and / or 110 could also be opened automatically by an actuator, e.g. when the internal combustion engine 44 of the work machine 10 is switched off, so that the contaminants can then fall out of the cavities by themselves (due to gravity).
    A controller 112 is set up to switch off the drive of the suction fan 118 of the cleaning device 50 if necessary, if it can be assumed that the operator will open the door 86 in the foreseeable future in order to go to the platform 94 and / or the steps 90 . Switching off prevents the nozzles 100 from conveying contaminants from the platform 94 into the cabin 18. For this purpose, the status of a user interface 116 can be queried, with which a crop processing device (e.g. the chopping device 26) can be switched on and off, or the status of a seat switch 114 is detected, based on which it can be seen whether it is currently switched on
    Operator is seated or not. Instead of switching off the suction fan 118 of the cleaning device 50, provision could also be made for its air flow to be vented into the environment through a valve instead of reaching the connecting line 102, or alternatively or in addition to the measures mentioned, one or both of the flaps 108 and / or 110 opened by an actuator in order to switch off the air flow through the nozzles 100 and at the same time to free the cavities from impurities that have accumulated there.
    It should also be noted that instead of using the suction fan 118 to act on the connecting line 102 to generate the air flow, part of the air flow from the blower 54 could be branched off and fed to the connecting line 102, or a separate compressor could be used for this.
    权利要求:
    Claims (7)
    [1]
    A work machine (10), comprising: a supporting structure (12) movable in a forward direction (V), a cabin (18) which is attached to the supporting structure (12) and comprises an operator's workstation and a door (86), and an accessible, machine-fixed platform (94) laterally adjacent to the door (86) and / or a ladder (90) with steps (92) arranged one above the other, characterized by a cleaning device for acting on the platform (94) and / or the ladder (90) ) with a stream of air.
    [2]
    2. The work machine (10) according to claim 1, wherein the cleaning device comprises a first wall (96, 104) which is adjacent to the steps (90) and / or the platform (94) and has a second wall (98, 106) Forms a cavity to which pressurized air can be applied, and wherein the second wall (98, 106) includes nozzles (100) oriented towards the platform (94) and / or steps (92).
    [3]
    3. Work machine (10) according to claim 2, wherein the nozzles (100) act on the platform (94) and / or steps (92) in the vertical and / or tangential direction with the air flow.
    [4]
    4. Work machine (10) according to claim 2 or 3, wherein the cleaning device comprises an openable flap (108, 110).
    [5]
    5. Work machine (10) according to one of the preceding claims, wherein the air flow can be generated by a fan (54, 118) which is used to generate a cooling air flow or to extract a cooling air filter (48).
    [6]
    6. Work machine (10) according to one of the preceding claims, wherein the air flow can be switched off.
    [7]
    7. Work machine (10) according to claim 6, wherein the air flow can be controlled by a controller (112) which has an input device (116) for inputting an operating state of the work machine (10) and / or a sensor (114) for detecting an operator condition connected is.
    类似技术:
    公开号 | 公开日 | 专利标题
    EP0438076B1|1994-04-20|Air distributing arrangement for vehicle cabins
    EP1074175B1|2004-06-09|Distributor for the residues of crops ejected from a combine
    EP0392189B1|1993-08-04|Agricultural carrier vehicle
    DE102008040902B4|2017-05-11|Self-propelled harvester with a sliding into a maintenance position screening device
    DE2635530B2|1980-05-08|Street sweeper
    DE102005012169A1|2005-10-13|Under hood intake system for engine air
    EP2258160B1|2013-07-17|Engine cover of a combine harvester
    DE10012766B4|2009-08-20|Cleaning device for a sieve and vehicle with cleaning device
    EP2368417B1|2012-09-19|Harvester with a filter device for cooling air
    BE1027337A9|2021-03-15|Work machine with a platform leading to the operator's workstation and / or steps
    EP0503408B1|1995-01-25|Harvesting machine, particularly combine harvester, with a blower and a working unit at least partially surrounded by a frame
    DE2145633A1|1972-03-16|Floor care machine
    DE202013105493U1|2014-01-09|Device for picking up and loading of debris, receiving and loading unit and loading device
    DE102004015164B4|2021-06-10|Trolley to support a header
    DE2623273A1|1977-01-27|HARVEST MACHINE
    DE10126523C2|2003-04-17|Self-propelled harvester
    EP3300972A1|2018-04-04|Agricultural machine
    EP1491082B2|2009-08-19|Process for cleaning the working tools in an agricultural machine
    BE1027478B1|2021-07-26|Forage harvester with discharge spout and position-adjustable cab
    DE102019005662A1|2021-02-18|Discharge spout for a forage harvester
    DE102009023771A1|2010-12-09|Self-driven harvesting machine i.e. combine harvester, has three radiator elements that are arranged within upper-lateral region of machine in horizontally aligned manner, where radiator elements guide cooling air flow in vertical direction
    DE102020005666A1|2022-03-17|FLOOR TILLER WITH DUST EXTRACTOR AND SERVICE TUNNEL AND PROCEDURES
    DE102020200493A1|2020-07-30|MODULARIZED HYDRAULIC SYSTEM FOR AGRICULTURAL COMBINES
    EP3693567A1|2020-08-12|Agricultural machine
    DE102013110741A1|2015-04-02|Forage harvester with a Nachbeschleunigungseinrichtung
    同族专利:
    公开号 | 公开日
    BE1027337A1|2021-01-07|
    BE1027337B1|2021-04-02|
    DE102019209151A1|2020-12-31|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    EP0443210B1|1990-02-20|1995-07-05|New Holland Belgium N.V.|Fire protected agricultural machine|
    AT405809B|1997-09-01|1999-11-25|Steyr Nutzfahrzeuge|Getting in the front handlebar truck with low pollution|
    DE10012766B4|2000-03-16|2009-08-20|Deere & Company, Moline|Cleaning device for a sieve and vehicle with cleaning device|
    US6796897B1|2003-09-17|2004-09-28|Deere & Company|Airfoil for an axial separator cleaning air blast duct|
    US20090033058A1|2007-08-01|2009-02-05|Paccar Inc|Heated cab entry steps|
    DE102008040902B4|2008-07-31|2017-05-11|Deere & Company|Self-propelled harvester with a sliding into a maintenance position screening device|
    US8186153B2|2009-05-01|2012-05-29|Deere & Company|Engine compartment arrangement for cleaning diesel particulate filter|
    DE102010003194A1|2010-03-24|2011-09-29|Deere & Company|Harvesting machine with a screening device for cooling air|
    DE102011003354A1|2011-01-31|2012-08-02|Deere & Company|Climbs for a working machine|
    DE102012216307B3|2012-09-13|2014-01-16|Deere & Company|Processing machine, particularly self-propelled harvesting machine, has railing element connected with step by step-down and rotational direction retaining drive, where railing element is designed as manually operable drive element|
    US10104829B2|2015-07-07|2018-10-23|Cnh Industrial America Llc|System for directional control of air flow in a harvestor|
    WO2017067612A1|2015-10-23|2017-04-27|Gebr. Bode Gmbh & Co. Kg|Pneumatic footplate cleaning|
    法律状态:
    2021-05-07| FG| Patent granted|Effective date: 20210402 |
    优先权:
    申请号 | 申请日 | 专利标题
    DE102019209151.2A|DE102019209151A1|2019-06-25|2019-06-25|Working machine with a platform and / or steps leading to the operator's workstation|
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