• 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:
    canvas platform and method for replacing an endless belt. a tarpaulin platform (100) has a central endless belt conveyor (118) which is supported on and between the first and second adjacent support arms (246a, 246b). the central endless belt conveyor (118) is releasable from a first support arm (246a) of the two adjacent support arms to pivot downward from the first support arm of the two adjacent support arms a sufficient distance to slidingly remove an endless conveyor belt (134) from the central endless belt conveyor in a direction parallel to the axes of rotation of the rollers (300, 302) supporting the endless conveyor belt.
    公开号:BR102012027195B1
    申请号:R102012027195-8
    申请日:2012-10-23
    公开日:2019-11-26
    发明作者:Benjamin J. Schlesser；Benjamin M. Lovett；Bruce A. Coers；Austin William Hughes
    申请人:Deere & Company；
    IPC主号:
    专利说明:

    “CANVAS PLATFORM AND METHOD TO REPLACE AN ENDLESS BELT”
    FIELD OF THE INVENTION [0001] The present invention relates to combined agricultural harvesting machinery and, more particularly, to canvas platforms. Even more particularly, it relates to central conveyors for such canvas platforms.
    BACKGROUND OF THE INVENTION [0002] Combined are large automotive vehicles used to harvest and trail agricultural crops in the field. The collection tip is typically arranged across the front of the combined vehicle supported in a feed chamber. This harvest tip is configured to cut and transfer the crop to the combined vehicle itself, where it is crushed, separated and cleaned.
    [0003] Traditional harvesting tips included an elongated rigid frame in which harvesting implements are added, such as cutting bars, row units, alternating action blade assemblies, worms, reels and endless conveyor belts. This type of harvesting tip is called a canvas or rubber impregnated canvas platform.
    [0004] Rolling tips made of rubber-impregnated canvas have an elongated frame on which endless left and right belt conveyors are mounted, mounted immediately behind an alternating action blade. These endless conveyors transfer cut crop material inwards to a central portion of the canvas platform, depositing them on a central conveyor that moves the cut crop material backwards. The central conveyor loads the material into an opening, and through it, at the rear of the canvas platform frame, where it is deposited on a lifting conveyor called the feed chamber, which loads the cut material for the vehicle.
    Petition 870190086785, of 9/4/2019, p. 5/90 / 20 combined for screening, separation and cleaning.
    [0005] The straps on the central conveyor are typically formed of an elongated fabric belt with a plurality of ears mounted on it. In the manufactured form, these straps are flat and are not endless. They have grooves at opposite ends of the belt that allow the ends of the belt to be attached together to form an endless belt - for example, a fabric loop - as the belt is looped around the conveyor rollers and the ends free of the belt are connected.
    [0006] For this, the existing damaged worm belt must be cut across its width, or the conveyor belt fasteners removed, and then the entire length of the belt must be passed around the rollers that support the conveyor belt. central.
    [0007] Once the damaged belt is removed, the new belt, also in the flat shape, has to be stretched around and under the drive and idler rollers that support the belt, the free ends of the new belt have to be pulled against each other and then screws and metal bars have to be used to attach the loose ends together to form the endless belt (ie the loop).
    [0008] This problem is further complicated by the need to pass around the two side conveyors. The side conveyors extend over the endless belt of the central conveyor, thus making the new belt even more difficult to insert.
    [0009] The problem to be solved is to provide a central conveyor that allows the quick replacement of the endless belt of the central conveyor that the endless belt needs to replace.
    [00010] This problem is solved by the arrangement described in claim 1 (in the deposited manner) and by the method described in claim 8 (in the deposited manner). Additional advantages are provided by the claims
    Petition 870190086785, of 9/4/2019, p. Additional 6/90 / 20 which are dependent according to claim 1.
    SUMMARY OF THE INVENTION [00011] According to a first embodiment of the invention, a canvas platform is revealed which has a direction of travel through a field and a leading edge, the canvas platform comprising an elongated frame, said frame being elongated and arranged to load crops in a direction transversal to the direction of travel through the field; support arms pivotally coupled to the frame and extending in front of it; an alternating action blade disposed on the leading edge of the canvas platform and extending substantially over the entire width of the canvas platform, a conveyor on the left side disposed behind the alternating action blade and supported on a first plurality of support arms and with an endless belt arranged to load crops from the left side of the canvas platform to a central region of the canvas platform; a conveyor on the right side disposed behind the blade of alternating action and supported on a second plurality of support arms and with an endless belt arranged to load crops from the right side of the canvas platform to a central region of the canvas platform; a central conveyor arranged between the left side conveyor and the right side conveyor and supported on two adjacent support arms, said central conveyor with an endless conveyor belt and at least two rollers on which the endless conveyor belt is supported, and around which the endless conveyor belt reverses its direction of travel; wherein the conveyor belt is releasable from a first support arm of the two adjacent support arms to pivot downwardly out of the first support arm of the two adjacent support arms a sufficient distance to slide the endless conveyor belt slidably of the central conveyor in a direction parallel to the axes.
    [00012] The central conveyor can be supported on the first arm
    Petition 870190086785, of 9/4/2019, p. 7/90 / 20 support with first and second clamps, each of said first and second clamps comprising a first clamp element fixed to the first support arm and a second clamp element fixed to the central conveyor, and at least one coupling element removable by coupling the first and second clamp elements together.
    [00013] The at least one coupling element can be received on both the first and second clamp elements to hold the first and second clamp elements together.
    [00014] The second clamp element can be spaced from the first clamp element to pivot down with respect to the first clamp element when at least one coupling element is removed.
    [00015] The central conveyor may be supported on the second support arm with third and fourth clamps, each of said third and fourth clamps comprising a third clamp element fixed to the second support arm, and a fourth clamp element fixed to the conveyor central, and additionally in which the third and fourth clamp elements are pivotally coupled to each other to allow the central carrier to pivot with respect to the second support arm about a pivot axis immediately adjacent to at least a portion of the third and fourth clamps.
    [00016] The pivot shaft can pass through the third clamp and the fourth clamp.
    [00017] The central conveyor may additionally comprise a belt tensioner arranged within the loop of the endless conveyor belt, and additionally in that the belt tensioner can relieve sufficient tension to remove the endless conveyor belt from the central conveyor, transferring the belt endless conveyor in a direction parallel to the longitudinal extension of the at least two rollers a distance of at least the overall transverse width of the endless conveyor belt.
    Petition 870190086785, of 9/4/2019, p. 8/90 / 20 [00018] According to a second embodiment of the invention, on a canvas platform with a direction of travel, a right side and a left side, said canvas platform comprising a canvas frame impregnated with elongated rubber extending in a direction transverse to the direction of travel, said canvas platform additionally comprising a conveyor on the left, a conveyor on the right and a central conveyor, said conveyors on the left, right and central being supported on the said canvas frame, wherein said central conveyor is disposed between said conveyor on the left side and the conveyor on the right side to receive crop material cut from both the conveyor on the left and the conveyor on the right, wherein said conveyor center has two transversely opposed sides comprising a left side and a right side, where the central conveyor al additionally comprises a carrier frame, front roller and rear rollers supported on the carrier frame and an endless belt supported on the front and rear rollers for recirculation movement around the front and rear rollers, where the front and rear rollers rotate in around shafts extending parallel to the transverse extension of the frame, a method of replacing the endless belt is provided comprising the steps of releasing one side of the canvas frame's central conveyor, pivoting the central conveyor with respect to the surrounding canvas frame of a pivot shaft that generally extends parallel to the direction of travel, and remove the endless belt.
    [00019] The step of releasing one side may further comprise the step of completely disconnecting said one side from the central conveyor of the frame.
    [00020] The step of removing the endless belt can additionally comprise the step of retracting the front roller and the rear roller until tension is released on the endless belt.
    Petition 870190086785, of 9/4/2019, p. 9/90 / 20 [00021] The step of removing the endless belt may additionally comprise the step of sliding the endless belt completely out of the rollers in a direction on the first side of the central conveyor.
    [00022] The step of pivoting the central conveyor may include the step of pivoting the central conveyor until the first side of the central conveyor releases the frame enough that the endless belt can slide out of the central conveyor rollers in one direction parallel to the axis of rotation of the rollers.
    [00023] The step of pivoting the central conveyor may include the step of pivoting the central conveyor until the first side of the central conveyor releases the frame enough that the endless belt can slide out of the central conveyor rollers in one direction parallel to the axis of rotation of the rollers a distance at least as large as the general width of the endless belt and in the direction parallel to the axis of rotation.
    BRIEF DESCRIPTION OF THE DRAWINGS [00024] Figure 1 is a perspective view of a canvas platform according to the present invention.
    [00025] Figure 2 is a perspective view of the canvas platform of figure 1 with the conveyor belts and support plates removed.
    [00026] Figure 3 is a fragmentary detailed perspective view of the central region of the canvas platform of figures 1-2.
    [00027] Figure 4 is a fragmentary detailed perspective view of the flexible couplers that mount the central conveyor on the support arms that support the reciprocating blade.
    [00028] Figure 5 is a partially cut-away plan view of the central conveyor showing the arrangement of internal elements that support tension and drive the endless belt.
    [00029] Figure 6 is a view from the side of the central conveyor in its lower position prepared for removal and installation of the used belt.
    Petition 870190086785, of 9/4/2019, p. 10/90 / 20 [00030] Figure 7 is a front view of the central conveyor shown in figure 6 with its left side lowered to remove the used belt.
    DETAILED DESCRIPTION OF THE PREFERRED MODE [00031] The terms front, front, front, longitudinally, rear, back, back and the like used here are made with reference to V (figure 1), which is the direction of travel through the field during normal straight harvest operations. The direction of travel is horizontal and perpendicular to the longitudinal extent of the canvas platform. The transverse, side by side and similar terms refer to a direction generally parallel to the longitudinal extension of the tarpaulin. This direction is horizontal and transversal to the displacement direction V of the canvas platform.
    [00032] Next, the order describes the construction and operation of structures on the left side of the canvas platform. The construction and operation of the right side of the canvas platform are identical to the construction and operation of the left side of the canvas platform in all aspects, but it is constructed as a mirror image on the left side.
    [00033] In figures 1 and 2, a canvas platform 100 is comprised of an elongated and laterally extending frame comprising a section of the left frame 102, a section of the central frame 104 and a section of the right frame 106. These three elements frames are coupled together and extend linearly, laterally and horizontally in an end-to-end relationship. The section of the left frame 102 pivots around an axis that is generally horizontal and extends forward 108 with respect to the section of the central frame 104. This axis is defined by the pivot joint 110. The pivot joint 110 couples the section of the left frame 102 and the central frame section 104 in each other and prevents them from pivoting around the axis 108. The right frame section 106 pivots around a
    Petition 870190086785, of 9/4/2019, p. 11/90 / 20 axis generally horizontal and extending forward 112 with respect to the central frame section 104. This axis is defined by the pivot joint 114. The pivot joint 114 couples the right frame section 106 and the frame section central 104 in each other and prevents them from pivoting relative to each other around axis 112. Although shown here as three sections pivotally connected, in an alternative embodiment the pivot joints can be eliminated and the entire frame formed as an elongated rigid construction . This can be done by forming beams 200, 208, 220 as a single elongated beam, and forming beams 202, 210, 222 as a single elongated beam. [00034] The canvas platform 100 additionally comprises an endless belt conveyor on the left side 118, and an endless belt conveyor on the right side 120. The endless belt conveyor on the left side 116 is comprised of three endless conveyor belts separate 122, 124, 126. The right side endless conveyor 120 comprises 3 separate endless conveyor belts 128, 130, 132. The endless conveyor belts 122, 124, 126, 128, 130, 132 have surfaces upper parts that are coplanar and are driven by motors (not shown) to load crop material cut laterally in the direction (indicated by the arrows that are superimposed on the conveyors) towards the central portion of the canvas platform 100, where they deposit their material tillage cut on the endless conveyor belt 134 of the central endless belt conveyor 118. The endless conveyor belt 134 has slats that and they extend laterally 135 (figure 3) connected to it to fit the crop and assist in the dragging of the crop. The endless conveyor belt 134 is driven by a motor (not shown) to load the cut crop material back in the direction indicated by the arrow superimposed on the endless conveyor belt 134. The endless conveyor belt 134 loads the cut crop material to behind and below the guide roller 136. The guide roller 136, in turn, loads the
    Petition 870190086785, of 9/4/2019, p. 12/90 / 20 tillage material cut back on the upper surface facing the central conveyor belt and through the central opening 138 arranged on the rear wall of the canvas platform 100. The cut tillage material that passes through the central opening 138 is received in a feed chamber (not shown) of an agricultural compound (also not shown) in the conventional manner.
    [00035] The alternating action blade assembly 140 is disposed along the leading edge of the canvas platform 100 and extends substantially over the entire width of the canvas platform. The alternating-action blade assembly 140 is configured to split crop plants close to their roots, allowing the divided portions of the crop plants to fall on the left endless belt conveyor 116, on the central endless belt conveyor 118 and on the endless belt conveyor on the right side 120.
    [00036] A reel (not shown) is arranged above the alternating action blade assembly 140 and is configured to fit the tops of the crop plants, pushing them gently back so that they fall on the endless belt conveyors 116, 118 and 120. The conveyors and the elongated reciprocating blade assembly are connected to the support arms 246, and supported by them (figure 2).
    [00037] Bottom sheets 142 generally extend vertically from the rear edge of endless conveyor belts 122, 124, 126, 128, 130, 132. These bottom sheets serve as a stop or barrier to prevent crop material from being cut pass completely through the canvas platform 100 and fall to the ground. The bottom eyes 142 end at the central opening 138 and define the opposite sides of the central opening 138.
    [00038] As the canvas platform moves over the terrain, the terrain presses up on the sliding shoes mounted on the base of the alternating action blade assembly 140, causing the elongated alternating action blade assembly 140 to move up and down and
    Petition 870190086785, of 9/4/2019, p. 13/90 / 20 flex independently along its length as the sliding shoes drag along the terrain following the undulating terrain. The elongated reciprocating blade assembly 140 is mounted on the leading edge of the canvas platform on the support arms 246 (figure 2). The support arms 246, in turn, pivot up and down to accommodate the flexing movement of the elongated reciprocating blade assembly 140.
    [00039] In figure 2, bottom sheets 142 have been removed to facilitate the illustration, as well as endless conveyor belts 122, 124, 126, 128, 130 and 132, and the elongated reciprocating blade assembly 140.
    [00040] The central frame section 104 comprises a horizontal beam that extends laterally 200 that is coupled to a beam that extends horizontally and laterally 202. The beam 202 is parallel and disposed above the beam 200. Transverse elements couple the beams 200 202 in each other to provide a rectangular frame.
    [00041] In a similar manner, the left frame section 102 is comprised of a beam that extends horizontally and laterally 208 that is coupled to a beam that extends longitudinally and laterally 210. The beam 210 is parallel to the beam 208, and above it. Transverse elements extend between beams 208, 210, and mate with each other, to form the left frame section 102.
    [00042] In a similar manner, the frame of the right frame section 106 is comprised of a beam that extends horizontally and laterally 220 that is coupled to a beam that extends horizontally and laterally 222. The beam 222 is parallel to the beam 220 , and arranged above it. Transverse elements extend between beams 222, 220, and mate with each other to form the section of the right frame.
    [00043] The left end of beam 200 and the right end of beam 208 are coupled together by a pivot joint 110. The pivot joint
    Petition 870190086785, of 9/4/2019, p. 14/90 / 20
    110 couples adjacent lower portions of the left frame section 102 and the central frame section 104 together.
    [00044] The right end of beam 200 and the left end of beam 220 are coupled together by a pivot joint 114. The pivot joint 114 couples adjacent lower portions of the right frame section 106 and the central frame section 104 one into another.
    [00045] The left end of beam 202 and the right end of beam 210 are coupled together by an elongated element 240. The elongated element 240 couples adjacent upper portions of the left frame section 102 and the central frame section 104 one into another.
    [00046] The right end of beam 202 and the left end of beam 222 are coupled together by an elongated element 242. The elongated element 242 couples adjacent upper portions of the right frame section 106 and the central frame section 104 one into another.
    [00047] A plurality (for example, about 26) of the carrier support arms 246 is pivotally coupled to the beams 200, 208 and 220 at the rear ends of the arms 246 in such a way that they can pivot up and down at the ends front of the arms 246 as the canvas platform 100 travels through the agricultural field harvesting crops. Beams 200, 208, 220 extend substantially horizontally and crosswise. The support arms of the conveyor 246 are attached to the elongated reciprocating action blade assembly 140 (figure 1) at its front ends. The elongated reciprocating blade assembly 140 is designed flexibly enough that individual support arms 246 can move up and down relative to adjacent support arms 246 as they follow farmland terrain, and the elongated reciprocating blade assembly 140 can flex between these adjacent support arms to allow their relative movement.
    Petition 870190086785, of 9/4/2019, p. 15/90 / 20 [00048] The support arms 246 are generally arranged horizontally and extend forward and slightly below the rear pivot 249 where each arm 246 is attached to the frame, beams 200, 208, 220 Each support arm 246 has an associated pivot 249. Support arms 246 are spaced parallel to each other and each support arm is preferably spaced equidistant from its immediate adjacent support arms 246. Pivots 249 are aligned in such a way that the support arms 246 pivot about an axis extending laterally and horizontally which is generally parallel to the longitudinal extension of the canvas platform 100.
    [00049] Referring now to figure 3, additional details of the central endless belt conveyor 118 can be seen. The central endless belt conveyor 118 has a front roller 300, a rear roller 302 and an endless conveyor belt 134 mounted to revolve endlessly around the two rollers.
    [00050] The rollers are horizontal and extend transversely. The endless conveyor belt 134 is made of a fine woven cloth impregnated and covered with an elastomeric material. Elongated elastomeric slats are formed on their upper surface to fit the tillage material and help transfer it to the guide roll 136.
    [00051] The central endless conveyor belt 118 comprises two side plates including a left side plate 304 and a right side plate 306 that define left and right edges of the central endless conveyor belt 118. The side plates are generally flat and they extend vertically and longitudinally, generally parallel to the direction of travel V of the canvas platform.
    [00052] The two side plates 304, 306 are coupled to a support frame arranged within the loop formed by the endless conveyor belt and between the two side plates. This support frame keeps the two
    Petition 870190086785, of 9/4/2019, p. 16/90 / 20 side plates in parallel with each other at a fixed distance in the fixed relative positions illustrated here. The support frame also supports and exerts a spring load on the front roller 300 with respect to the rear roller 302 to keep the endless conveyor belt 134 under tension for rotation around both rollers.
    [00053] Rear roller 302 is supported for rotation on fixed bearings on the rear ends of the left and right side plates 304, 306. Rear roller 302 rotates in such a way that its axis of rotation 307 passes through two openings at the rear of the left and right side plates 304, 306.
    [00054] Two rotary drive motors 308, 310 are mounted inside and mounted on the support arms 246A and 246B (shown in the figure
    2) that flank the central endless conveyor belt 118. The drive motors have rotary drive axes that pass through the openings in the side walls facing inwards 314, 312 of the support arms 246A, 246B, respectively, and within the openings in the side plates. These drive shafts are slidably received at opposite ends of the rear roller 302 to set the rear roller 302 in rotation and thereby drive the endless conveyor belt 134.
    [00055] Mounting clamps 316, 318, 320, 322 couple the central endless belt conveyor 118 to the support arms 236A and 246B, and between them. The clamp 316 engages the front end of the left side plate 304 on the support arm 246A. The clamp 318 engages the rear end of the left side plate 304 on the support arm 246A. The clamp 320 engages the front end of the right side plate 306 to the support arm 246B. The clamp 322 engages the rear end of the right side plate 306 on the support arm 246B.
    [00056] Thus, the central endless belt conveyor 118 is supported on the four clamps and two motors.
    [00057] The clamps 316, 318, 320 and 322 are built equal. Per
    Petition 870190086785, of 9/4/2019, p. 17/90 / 20 For this reason, we will only discuss the construction of the clamp 320 that connects the right front side of the central endless belt conveyor 118 to the support arm 246A (in figure 3).
    [00058] Clamps 320 and 322 are specular images of clamps 316 and 318. Clamps 316 and 318 are located in the same locations as clamps 320, 322, but on support arm 246B, instead of 246A.
    [00059] Referring to figure 4, the clamp 320 comprises a first coupler 400 which is fixed on the outer surface of the plate on the side 306. The coupler 400 extends to the right, out of the plate on the side 306. The coupler 400 comprises two metallic ears 402, 404, which generally extend vertically and laterally. A cylinder 406 that is hollow and straight circular extends between the ears 402, 404, and is supported by them, in corresponding openings formed in the ears 402, 404. The cylinder 406 is not fixed in the ears 402, 404, but is free to slide slightly back and forth in the circular openings formed in the ears 402, 404.
    [00060] An elastomeric bushing 408 that is circular to the right and cylindrical is arranged and supported inside the cylinder 406. The elastomeric bushing 408 fits snugly into the cylinder 406. It has a hole that is coaxial with its outer cylindrical surface that it is sized to receive the stem of a screw 410. This arrangement allows the screw to travel in three directions orthogonal to the cylinder 406 and to rotate with respect to cylinder 406 around three orthogonal axes.
    [00061] The clamp 320 also comprises a second coupler 412 which is fixed to the inward facing wall 314 of the support arm 246A. Coupler 412 extends inwards and to the left outwards from the surface of the side wall facing inward 314 and towards the side plate 306. Coupler 412 comprises two ears 414, 416 which generally extend vertically and laterally and parallel to the ears 402, 404
    Petition 870190086785, of 9/4/2019, p. 18/90 / 20 of the first coupler 400. The ears 414, 416 are spaced in such a way that they receive the ears 402, 404 between them. The openings are provided in the ears 414, 416 which are coaxial with the openings in the ears 402, 404. Openings in the ears 414, 416 have a smaller diameter, just enough to receive the screw stem 410 with a working gap and to allow the rod to pass through it.
    [00062] When the clamp 320 is mounted, the stem of the screw 410 passes completely through the four ears and through the opening in the elastomeric bushing 408, leaving much of the stem extending out from the far side (that is, the far side of the screw head 410) to allow a locknut 418 to be attached to it and thus prevent screw 410 from loosening from the ears of the clamp 320.
    [00063] The elastomeric bushing 408 is the element that provides the resilience and flexibility to the clamp 320. It is sized to allow the support arm 246A to pivot up and down with respect to the support arm 246B during normal operation. The reciprocating blade is connected to the front ends of the support arms 246A and 246B. The sliding shoes fixed to the base and the alternating action blade raise and lower the elongated alternating action blade assembly as they follow the undulating terrain. This movement causes the support arms 246A and 246B to pivot up and down with respect to beam 200, the clamp 320 (together with identical clamps 316, 318 and 322) provides enough flexibility for the endless belt conveyor center 118 can be attached to the support arms 246A and 246B and allow them to pivot up and down relative to each other without damaging the central endless belt conveyor 118.
    [00064] In addition, connecting the support arms and the central conveyor using screws 410 that are oriented in the longitudinal direction and are arranged in the gap between the left and right side plates 304, 306 and the
    Petition 870190086785, of 9/4/2019, p. 19/90 / 20 side walls facing inwards 312, 314 of the support arms, it is convenient to insert spanners in the gap and extract the screws. This is done by removing the locknuts and sliding the screws forward in a direction generally parallel to the longitudinal clearance between the central conveyor and the flanked support arms.
    [00065] Referring now to figure 5, the roller support assembly 500 of the central endless belt conveyor 118 is illustrated. In addition to the above-discussed side rollers and plates, the central conveyor has an internal frame 502 and belt tensioner 504 .
    [00066] The inner frame 502 is in the form of an transversely extending element that is coupled to the two side plates 304, 306 to hold the side plates in fixed positions with respect to each other. The inner frame 502 is arranged within the loop formed by the endless belt 134 of the central endless belt conveyor 118.
    [00067] The tensioner 504 includes a beam 506, a joint 508, a bell crank 510 and a spring assembly 512.
    [00068] The beam 506 is coupled to the opposite ends of the front roller 300 to apply a force to the ends of the roller 300 which, when tensioned by the spring assembly 512, pushes the front roller 300 forward and out of the rear roller 302. The ends of the front roller 300 are coupled to the side plates in such a way that the front roller 300 can slide back and forth with the side plates 304, 306. The beam 506 similarly slides back and forth with respect to the side plates as you push the ends of the roll 300.
    [00069] Joint 508 is coupled at the midpoint of beam 506 and extends between bell crank 510 and beam 506. Joint 508 is pushed forward by bell crank 510. Joint 508 transmits this force to beam 506. beam 506 in turn communicates this
    Petition 870190086785, of 9/4/2019, p. 20/90 / 20 forces the ends of the roll 300, thereby pushing the roll 300 forward with respect to the side plates 304, 306.
    [00070] Bell crank 510 is pivotally coupled to the inner frame 502 at pivot point 514 in such a way that it pivots freely around pivot point 514. Bell crank 510 changes the direction of the spring forces generated by the spring assembly 512 in the transverse direction. The forces are redirected to become forces that push the 508 joint forward.
    [00071] The spring assembly 512 is coupled at one end to the inner frame 502 and at the other end to a pivot joint 516 at the bell crank 510. The spring assembly 512 includes a spring element, shown here as a spiral spring 517 , which, when tensioned, applies the tensioning force on the bell crank 510 on the pivot joint 516.
    [00072] The spring set 512 is adjustable. The amount of tension in the spring element can be changed from a first level sufficient to keep the endless belt 134 securely on rollers 300, 302, to a second level where roll 300 can move towards roll 302. In this second tension level on spring 517, rollers 300 and 302 can move towards each other enough to allow the endless belt that is supported on rollers 300, 302 to be completely loose, thereby allowing it to be removed from the rollers 300, 302 and the internal frame 502.
    [00073] In the preferred mode, the tension is varied by manipulating the spring assembly through an access hole located in one of the side plates 304, 306. In the mode shown here, this access hole 521 (figure 6) is provided in the plate of the side 306 immediately adjacent to the free end 519 of the spring assembly. In the arrangement shown here, the operator inserts a socket wrench into the opening, fits the socket on the socket wrench with the free end 519 of the spring assembly, and rotates it to
    Petition 870190086785, of 9/4/2019, p. 21/90 / 20 increase or decrease the tension. If the belt tension is to be reduced (for example, when the old belt is removed), the operator rotates the free end 519 of the spring assembly in one direction to decrease the tension force. If the belt tension is to be increased (for example, when the new belt has to be tensioned for use) the operator rotates the free ends 519 of the spring assembly in the opposite direction.
    [00074] To remove and replace the endless belt 134, the operator removes screws 410 from mounting clamps 320, 322. The operator also loops the screws that hold hydraulic motor 310 on support arm 326A which allows motor 310 to be removed from the roller 302, thereby disengaging the motor 310 from the roller 302 sufficiently to allow the right side of the central conveyor 118 to be lowered towards the ground.
    [00075] At this point in the removal / replacement process the central conveyor is not supported on its right side. Mounting brackets 316, 318 are still attached to the central conveyor on the left side of the conveyor. Mounting clamps 316, 318, however, have sufficient flexibility provided by the elastomeric bushes 408 of mounting clamps 316, 318 to allow the center conveyor to pivot downwards with respect to the support arm 246B when the screws 410 in the mounting clamps 320, 322 (the opposite side of the central conveyor) have been removed.
    [00076] The operator then pivots the center conveyor down on its right side around the pivot axis 520 defined by the elastomeric bushing and mounting bracket screws 316, 318. The mounting braces 316, 318 function as hinges and allow the right side of the center conveyor falls below the support arm 246A. This position is shown in figure 6 by a side view and in figure 7 by a front view.
    [00077] Referring to figures 6 and 7, the central carrier 118 can
    Petition 870190086785, of 9/4/2019, p. 22/90 / 20 be seen in its lowered position ready to replace the belt. The side plate 306 is exposed to allow the used belt to be removed. Removing and replacing the endless belt 134 (like an endless belt) without cutting the belt or providing a gasket on the belt itself is possible first because one side of the central conveyor has been easily lowered and so exposed and because of the side plate 306 has a flat area small enough to allow the side plate 306 to be pulled completely through the endless belt loop 134. When the front roller 300 is tensioned to remove the endless belt free from the center conveyor, the front roller 300 is supported and is rocked forward from the leading edge 600 of the side plate 306. This rocker forward support allows the side plate 306 to have a surface area projected to the sides small enough - that is, the area shown in figure 6 - in such a way that the endless belt can be slidably removed from the rollers 300, 302 when the rollers move together by releasing the tension.
    [00078] To be removed, therefore, the belt must be buckled on rollers 300 and 302. For this, the operator inserts a wrench into the unexposed access hole (in figure 6) 521, and then fits the head 519 of the tensioner and rotates it in the direction of tension reduction.
    [00079] This reduces the tension in the spring assembly 512 from a first level sufficient to keep the endless belt 134 securely on the rollers 300, 302 to a second (reduced) level of tension in which the roll 300 is relaxed and moves back towards the roller 302. With the belt tension released and the roller 300 moved back, the friction between the endless belt 134 and the rollers 300, 302 is eliminated, and the belt becomes wobbly, and the belt can be removed from sliding shape.
    [00080] The endless belt 134 has a greater length than the length of the outer edge of the side plate 306. Since it has
    Petition 870190086785, of 9/4/2019, p. 23/90 / 20 this greater length, the endless belt 134 can slide off the plate on the side 306 without interference.
    [00081] In a preferred arrangement, roll 300 can be released and pulled back far enough to leave the endless belt 134 hanging loosely on rollers 300, 302. However, this large clearance is not a requirement.
    权利要求:
    Claims (13)
    [1]
    1. Canvas platform (100) with a direction of travel through a field (V) and a leading edge, comprising:
    an elongated frame (102, 104, 106), the frame being elongated and arranged to load crop in a direction transverse to the direction of travel across the field;
    support arms (246) pivotally coupled to the frame and extending in front of it;
    an alternating action blade (140) disposed on the leading edge of the canvas platform and extending the entire width of the canvas platform, a conveyor on the left side (116) disposed behind the alternating action blade and supported in a first plurality of support arms and having an endless belt (122, 124, 126) arranged to load crop from the left side of the canvas platform to a central region of the canvas platform;
    a conveyor on the right side (120) disposed behind the blade of alternating action and supported on a second plurality of support arms and having an endless belt (128, 130, 132) arranged to load crops on the right side of the canvas platform to a central region of the canvas platform;
    a central conveyor (118) arranged between the left side conveyor and the right side conveyor and supported on two adjacent support arms (246A, 246B), the central conveyor having an endless conveyor belt and at least two rollers on which the endless conveyor belt (134) is supported and around which the endless conveyor belt reverses its direction of travel;
    characterized by the fact that the central conveyor (118) is releasable from a first support arm (246A) of the two support arms
    Petition 870190086785, of 9/4/2019, p. 25/90
    [2]
    2/5 adjacent support (246A, 246B) to pivot downward out of the first support arm of the two adjacent support arms at a sufficient distance to slide the endless conveyor belt off the central conveyor in a direction parallel to the axes .
    2. Canvas platform (100) according to claim 1, characterized in that the central conveyor is supported on the first support arm with first and second clamps, each of the first and second clamps comprising a first clamp element fixed to the first support arm and a second clamp element fixed to the central conveyor, and at least one removable coupling element coupling the first and second clamp elements to each other.
    [3]
    Canvas platform (100) according to claim 2, characterized by the fact that at least one coupling element is receivable in both the first and the second clamp element, to hold the first and second clamp elements together.
    [4]
    4. Canvas platform (100) according to claim 3, characterized in that the second clamp element is spaced from the first clamp element to pivot down with respect to the first clamp element when at least one clamp element coupling is removed.
    [5]
    5. Canvas platform (100) according to claim 2, characterized in that the central conveyor is supported on the second support arm with third and fourth clamps, each of the third and fourth clamps comprising a third clamp element fixed on the second support arm, and a fourth clamp element fixed on the central conveyor, and in addition the third and fourth clamp elements are pivotally coupled to each other to allow the central conveyor to pivot with respect to the second support arm in around a pivot axis immediately adjacent to at least a portion of the
    Petition 870190086785, of 9/4/2019, p. 26/90
    3/5 third and fourth clamps.
    [6]
    6. Canvas platform (100), according to claim 5, characterized by the fact that the pivot axis passes through the third clamp and the fourth clamp.
    [7]
    Canvas platform (100) according to claim 1, characterized in that the central conveyor additionally comprises a belt tensioner arranged within the loop of the endless conveyor belt, and additionally in which the belt tensioner can release sufficient tension to remove the endless conveyor belt from the central conveyor by translating the endless conveyor belt in a direction parallel to the longitudinal extension of the at least two rollers, at a distance of at least the overall transverse width of the endless conveyor belt.
    [8]
    8. Method for replacing an endless belt (134) on a canvas platform (100) having a direction of travel, a left side and a right side, the canvas platform (100) comprising an elongated canvas frame extending in a direction transverse to the direction of travel, the canvas platform (100) additionally comprising a conveyor on the left (116), a conveyor on the right (120) and a central conveyor (118), the conveyors on the left, side right and center being supported on the canvas frame (102, 104, 106), in which the central conveyor is arranged between the conveyor on the left and the conveyor on the right to receive crop material cut from both the conveyor on the left and the right side conveyor, wherein the central conveyor has two transversely opposing sides comprising a left side and a right side, wherein the central conveyor further comprises a carrier frame (502), a front roller (300) and a rear roller (302) supported on the carrier frame and an endless belt (134) supported
    Petition 870190086785, of 9/4/2019, p. 27/90
    4/5 on the front and rear rollers for recirculating movement around the front and rear rollers, where the front and rear rollers rotate around axes that extend parallel to the transverse frame extension, the method of replacing an endless belt ( 134) characterized by the fact that it comprises the steps of releasing one side of the central conveyor of the canvas frame (102, 104, 106), pivoting the central conveyor (118) with respect to the canvas frame (102, 104, 106) in around a pivot axis (520) that generally extends parallel to the direction of travel, and slidingly remove the endless belt (134) while the endless belt is in the form of an endless loop.
    [9]
    Method according to claim 8, characterized in that the step of releasing one side additionally comprises the step of completely disconnecting the central conveyor side (118) from the frame.
    [10]
    Method according to claim 8, characterized in that the step of removing the endless belt (134) further comprises the step of retracting the front roller (300) towards the rear roller (302) until the tension is released on the endless belt.
    [11]
    11. Method according to claim 8, characterized in that the step of removing the endless belt (134) additionally comprises the step of sliding the endless belt completely out of the front and rear rollers towards the first side the central conveyor.
    [12]
    12. Method according to claim 8, characterized in that the step of pivoting the central conveyor (118) includes the step of pivoting the central conveyor until the first side of the central conveyor is free of the frame enough for the endless belt can be slid off the central conveyor rollers in a direction parallel to the axis of rotation of the front and rear rollers (300, 302).
    Petition 870190086785, of 9/4/2019, p. 28/90
    5/5
    [13]
    13. Method according to claim 8, characterized in that the center in which the step of pivoting the central conveyor (118) includes the step of pivoting the central conveyor until the first side of the central conveyor free the frame enough that the endless belt can be slid off the central conveyor rollers in a direction parallel to the axis of rotation of the front and rear rollers (300, 302) a distance of at least the value of the overall belt width without end in the direction parallel to the axis of rotation.
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    同族专利:
    公开号 | 公开日
    EP2586288B1|2015-03-25|
    RU2012143207A|2014-04-20|
    US20130097986A1|2013-04-25|
    BR102012027195A2|2014-02-25|
    AU2012244125B2|2017-04-06|
    US8544250B2|2013-10-01|
    AU2012244125A1|2013-05-09|
    EP2586288A1|2013-05-01|
    RU2607094C2|2017-01-10|
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    法律状态:
    2014-02-25| B03A| Publication of an application: publication of a patent application or of a certificate of addition of invention|
    2018-12-04| B06F| Objections, documents and/or translations needed after an examination request according art. 34 industrial property law|
    2019-07-09| B06T| Formal requirements before examination|
    2019-11-05| B09A| Decision: intention to grant|
    2019-11-26| B16A| Patent or certificate of addition of invention granted|Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 23/10/2012, OBSERVADAS AS CONDICOES LEGAIS. (CO) 20 (VINTE) ANOS CONTADOS A PARTIR DE 23/10/2012, OBSERVADAS AS CONDICOES LEGAIS |
    优先权:
    申请号 | 申请日 | 专利标题
    US13/280762|2011-10-25|
    US13/280,762|US8544250B2|2011-10-25|2011-10-25|Draper platform with center conveyor and method of replacing the center conveyor belt|
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