JP4707586B2 - Combine - Google Patents

Description

  The present invention relates to a combine harvester that harvests uncut cereal grains in a field by a reaping device, threshs the harvested cereal grains by a threshing device, and collects the grains. It relates to a combine that inherits a kite and carries it out of the machine.

  Conventionally, harvesting cereal with a reaping device, conveying the reaped cereal from the reaping device to the threshing device with a feed chain, and threshing with the threshing device to collect the grain, while changing from the feed chain to the waste chain It is configured to inherit the waste and carry it out of the machine (see, for example, Patent Document 1).

In this case, the conventional combine is provided with a lifting mechanism that lifts the waste chain upward, and lifts the waste chain in the waste transport posture upward, so that the waste chain and the bottom side waste are removed. It was configured to remove the waste trapped between the sandwiching body.
JP 2005-87139 A

  The prior art has a structure in which an exhaust drive case for transmitting a driving force to the exhaust chain via an exhaust drive belt is provided on the exhaust feed start end side of the exhaust chain. The weight on the start side of the waste feed became heavier than the weight on the end side of the waste feed. Therefore, a lot of waste is clogged on the waste feed start end side of the waste chain that inherits waste from the feed chain, but the lifting mechanism raises and lowers the waste feed start end side of the waste chain, When removing the waste clogged on the exhaust feed start end side of the exhaust chain, the weight of the exhaust drive case or the tension of the exhaust drive belt acts on the exhaust chain, and the exhaust chain However, there is a problem that the lifting mechanism and the like cannot be constructed with a simple structure and light weight and low cost.

  An object of the present invention is to provide a combine that can stably support the lifting chain that can be lifted upward while allowing the lifting mechanism and the like to be configured easily.

In order to achieve the object, a combine according to a first aspect of the present invention includes a harvesting device having a cutting blade, a threshing device, a feed chain for supplying cereals to a handling cylinder of the threshing device, and a waste from the feed chain. An exhaust chain that inherits the soot and carries it out of the machine, an exhaust chain holding body that extends to the lower surface of the exhaust chain, and a lifting mechanism that lifts the exhaust chain above the exhaust chain holder in it becomes Te combine, in either one of the threshing apparatus or the straw discharge chain, a structure in which the guide body Ru provided which is adapted in sliding contact with the other guide the lifting of the straw discharge chain, said guide member Is formed by a rod-shaped member, and the guide body is configured to be slidably contacted with a planar body extending in the ascending / descending direction of the waste chain .

According to the first aspect of the present invention, a reaping device having a cutting blade, a threshing device, a feed chain for supplying cereal to a handling cylinder of the threshing device, and inheriting the waste from the feed chain, the outside of the machine In the combine comprising: a waste chain that is carried out to the bottom of the waste chain; a waste holder that extends to a lower surface of the waste chain; and a lifting mechanism that lifts the waste chain above the waste holder. apparatus or either one of the straw discharge chain, a structure in which the guide body Ru provided which is adapted to guide the lifting of the straw discharge chain sliding contact with the other, said guide member formed at the rod-like member Since the guide body is configured to be brought into sliding contact with a flat body extending in the ascending / descending direction of the reject chain, the guide body can stably support the reject chain that can be lifted upward, Lifting Those that can be easily configured and the like mechanism.

According to the first aspect of the present invention, the guide body is formed by a rod-shaped member, and the guide body is configured to be slidably contacted with a planar body that extends in the lifting / lowering direction of the waste chain. Even if the waste chain conveys waste or the waste chain is lifted upward, the waste chain can be stably supported by the guide body and the flat body.

  DESCRIPTION OF EMBODIMENTS Embodiments embodying the present invention will be described below with reference to the drawings. FIG. 1 is a left side view of the combine, and FIG. 2 is a plan view of the combine. The overall structure of the combine will be described with reference to FIGS. 1 and 2. In the following description, the left side in the traveling direction of the traveling machine body 1 is simply referred to as the left side, and the right side in the traveling direction is also simply referred to as the right side.

  The combine of this embodiment includes a traveling machine body 1 supported by a pair of left and right traveling crawlers 2. At the front part of the traveling machine body 1, a reaping device 3 for taking in while harvesting cereals is mounted so as to be adjustable up and down by a single-acting lifting hydraulic cylinder 4. A threshing device 5 having a feed chain 6 and a grain tank 7 for storing grain after threshing are mounted on the traveling machine body 1 side by side. In this embodiment, the threshing device 5 is disposed on the left side in the traveling direction of the traveling machine body 1, and the grain tank 7 is disposed on the right side in the traveling direction of the traveling machine body 1. A swivelable discharge auger 8 is provided at the rear part of the traveling machine body 1, and the grains inside the grain tank 7 are discharged from the throat throw 9 of the discharge auger 8 to a truck bed or a container. ing. An operation unit 10 is provided on the right side of the reaping device 3 and on the front side of the grain tank 7.

  The driver 10 includes a step 11 on which the operator gets on, a round handle type steering handle 13 provided on the handle column 12 on the step 11, a driver seat 14 provided behind the steering handle 13, and a driver seat 14. A main transmission lever 16, an auxiliary transmission lever 17, a threshing clutch lever 18, and a cutting clutch lever 19 provided on the left lever column 15 are arranged. An engine 20 as a power source is arranged below the driver seat 14.

  Below the cutting frame 21 of the cutting device 3, a clipper-type cutting blade device 22 that cuts the stock of uncut grain culm in the field is provided. In front of the cutting frame 21, a grain stalk elevating device 23 for three strips that raises uncut sorghum in the field is arranged. Between the grain raising apparatus 23 and the front end (feed start side) of the feed chain 6, a grain conveying device 24 that conveys the harvested rice cake harvested by the cutting blade device 22 is arranged. In addition, a weeding body 25 for weeding uncut cereal grains in the field is provided in front of the lower part of the cereal habit raising apparatus 13. While the traveling crawler 2 is driven by the engine 20 to move within the field, the reaping device 3 is driven to continuously shave the uncut cereals on the field.

  In the threshing device 5, a handling cylinder 26 for threshing threshing, a rocking sorter 27 and a tang fan 28 for selecting threshing falling below the handling cylinder 26, and a threshing taken out from the rear part of the handling cylinder 26. A processing cylinder 29 for reprocessing the discharged material and a dust exhaust fan 30 for discharging dust at the rear of the swing sorter 27 are provided. In addition, the rotating shaft of the handling cylinder 16 extends along the conveying direction of the cereal by the feed chain 6 (in other words, the traveling direction of the traveling machine body 1). The stocker side of the cereals conveyed from the reaping device 3 by the cereal conveying device 24 is inherited by the feed chain 6 and is nipped and conveyed. Then, the tip side of this cereal is carried into the handling chamber 16 and threshed by the handling cylinder 17.

  Below the swing sorter 27, the first conveyor 31 for picking up the grain (first thing) sorted by the swing sorter 27, and the second of the second pick-up such as grain with branches and branches. A conveyor 32 is provided. The two conveyors 31 and 32 of this embodiment are the upper surface side of the traveling machine body 1 above the rear of the traveling crawlers 2 and 2 in a side view in order of the first conveyor 31 and the second conveyor 32 from the front side in the traveling direction of the traveling machine body 1. It is laid horizontally.

  The swing sorter 27 is configured such that the cereals that have leaked from the receiving net stretched below the handling cylinder 26 are subjected to peristaltic sorting (specific gravity sorting) by a feed pan and a chaff sheave (not shown). In addition, as for the grain which fell from the grain sieve (illustration omitted) of the rocking | pulverization sorter | selection board 27, the dust in the grain will be removed by the sorting wind from the Kara fan 27, and will fall to the conveyor 31 most.

  A whipping cylinder 33 extending in the vertical direction is connected to a terminal portion of the first conveyor 31 that protrudes outward from one side wall (right side wall in the embodiment) near the grain tank 7 in the threshing device 5. . The grain taken out first from the conveyor 31 is carried into the grain tank 7 through the whipping cylinder 33 and collected in the grain tank 7. In addition, the termination | terminus part which protruded outward from the one side wall near the grain tank 7 in the threshing apparatus 5 among the 2nd conveyors 32 cross | intersects the whipping cylinder 33, and passes through the reduction | restoration cylinder (illustration omitted) extended in the front-back direction. The second sort is returned to the top side of the feed pan of the swing sorting board 27 and re-sorted.

  On the other hand, a waste chain 34 is disposed on the rear end side (feed end side) of the feed chain 6. The waste (the grain from which the grain has been threshed) inherited from the rear end side of the feed chain 6 to the waste chain 34 is discharged to the rear of the traveling machine body 1 in the long state, or the rear side of the threshing device 5 After being cut to an appropriate length by the waste cutter 35 provided at the front, the paper is discharged to the lower rear of the traveling machine body 1.

  Next, the combine power transmission system of the first embodiment of the present invention will be described with reference to FIG.

  The power of the engine 20 branches from an output shaft 41 protruding from the engine 20 in three directions: a traveling mission device 42 that drives both the left and right traveling crawlers 2, a threshing device 5 and a reaping device 3, and a discharge auger 8. Is transmitted.

  The traveling mission device 42 includes a traveling HST hydraulic continuously variable transmission (not shown) comprising a hydraulic pump and a hydraulic motor, and a turning HST hydraulic continuously variable transmission (not shown) comprising a hydraulic pump and a hydraulic motor. ). The branching power from the output shaft 41 of the engine 11 toward the traveling mission device 42 is transmitted to the input side of the traveling pump of the traveling HST hydraulic continuously variable transmission, and the turning HST hydraulic pressure from the input side of the traveling pump. Power is transmitted to the input side of the swivel pump of the continuously variable transmission.

  Then, by adjusting the inclination angle of the rotary swash plate in the hydraulic pump according to the operation amount of the steering handle 13 provided in the operation unit 10, the discharge direction and discharge amount of the pressure oil to the hydraulic motor (not shown). Is changed, and the rotational direction and rotational speed (driving speed and driving direction of the left and right traveling crawlers 2) of the traveling or turning hydraulic motor are arbitrarily adjusted.

  The branching power from the output shaft 41 of the engine 11 to the discharge auger 8 is transmitted to the bottom conveyor 44 in the grain tank 7 and the vertical conveyor 45 in the discharge auger 8 via the tank input shaft 43, and then the inheriting screw. Then, power is transmitted to the discharge conveyor 46 in the horizontal auger tube of the discharge auger 8. The grains in the grain tank 7 are carried out by the conveyors 44, 45, and 46 to a truck bed or a container.

  The branching power from the output shaft 41 of the engine 11 to the threshing device 5 and the pre-harvest processing device 3 is transmitted to the tang shaft 48 of the tang fan 28 via the threshing clutch 47 and branches from the tang shaft 48 in two directions. Power is transmitted. One of the power from the red shaft 48 is transmitted to the first conveyor 31, the second conveyor 32, the dust exhaust fan 30, and the exhaust cutter 35. The other power from the tang shaft 48 is branched and transmitted through the threshing input shaft 49 in three directions: the cutting device 3, the handling cylinder 26, and the processing cylinder 29.

  The branching power from the threshing input shaft 49 to the mowing device 3 is transmitted to the mowing transmission mechanism 50, and part of the power is transmitted to the front end of the feed chain 6 through the swing drive shaft 51 and the feed chain drive sprocket 52. . The remaining branching power is transmitted from the swing drive shaft 51 to the cutting input 1 shaft 54 via the cutting clutch 53, and is transmitted from the cutting input 1 shaft 54 to each part of the cutting device 3. The swing drive shaft 51 is connected to the front end side of the swing sorting plate 27, and the swing sorting plate 27 is swung in the front-rear direction by the swing drive shaft 51, and the grain crushed by the handling cylinder 26 is removed. Grains are sorted by specific gravity.

  In the present embodiment, the power transmitted to the cutting input 1 shaft 54 is transmitted to the horizontal transmission cutting input 3 shaft 56 via the vertical transmission cutting input 2 shaft 55, and the cutting blade device 22 and the grain culling are raised. The device 23 is driven by the cutting input triaxial 56. The power transmitted to the cutting input 1 shaft 54 passes through the vertical transfer fulcrum shaft 57 to the vertical transfer chain, the upper transfer tine, and the tip transfer tine (both not shown) of the grain feeder 24. Communicated.

  On the other hand, the branching power from the threshing input shaft 49 toward the barrel 17 is transmitted to the barrel 58 that pivotally supports the barrel 26. The power on the rear end side of the handling cylinder shaft 58 is transmitted to the waste chain 37 via the waste drive shaft 59. The barrel 26 and the waste chain 37 are driven by the power from the threshing input shaft 49.

  As shown in FIG. 3, a reduction shaft 63 is connected to one end (left end) of the swing drive shaft 51 via reduction gears 61 and 62, and a feed chain clutch 64 is connected to the reduction shaft 63. The clutch shaft 65 is connected to the clutch shaft 65, and the feed chain drive sprocket 52 is connected to the clutch shaft 65 via the joint shaft 66.

  Next, the attachment structure of the waste chain 34 according to the embodiment of the present invention will be described with reference to FIGS. As shown in FIGS. 4 to 7, a waste drive case 73 is disposed on the front end side (feed start side) of the waste chain 34, and a transmission case 74 is disposed on the rear end side (feed end side) of the waste chain 34. Is arranged. The exclusion drive case 73 is connected to a fourth upper surface frame 75 provided above the fourth basket of the threshing device 5 via a lifting mechanism 76 so that the rejection drive case 73 can be moved up and down on the fourth upper frame 75. Supports hanging. Further, the transmission case 74 is rotatably connected to a cutter upper surface frame 77 of the threshing device 5 provided above the rejecting cutter 35.

  That is, with the transmission case 74 as a fulcrum, the front end side of the rejection chain 34 and the rejection drive case 73 are configured to be movable in the vertical direction. Therefore, the operation of the lifting mechanism 76 causes the front end side of the waste chain 34 and the waste drive case 73 to move upward with respect to the waste holding body 78 (removal sandwich) extending to the lower surface side of the waste chain 34. Will move. Note that the evacuation pinching body 78 is elastically pressed against the lower surface side of the evacuation chain 34 by the evacuation pinching spring 79, and evacuation is performed from the feed chain 6 between the lower surface side of the evacuation chain 34 and the evacuation pinching body 78. Inherit and carry.

  Further, the transmission case 74 is disposed in front of the chain tension roller 34a on the feed end side of the reject chain 34, and the transfer case 74 is interposed from the reject chain 34 in front of the chain tension roller 34a to the auxiliary conveyance tine 108 described later. It is configured to transmit the driving force. Therefore, the chain tension roller 34a can be easily assembled. In addition, as a structure for supporting the feed end side of the reject chain 34 on the cutter upper surface frame 77, a support bracket is provided at an appropriate position on the feed end side of the reject chain 34, and the cutter upper surface frame 77 is discharged via the support bracket. The saddle chain 34 can also be pivotally connected.

  As shown in FIGS. 3 to 7, the rear end side of the handling cylinder shaft 58 protrudes rearward from the outlet side plate 84 on the rear side of the handling chamber 83 with the built-in handling cylinder 26, and the rear end side of the handling cylinder shaft 58 is formed. The barrel output pulley 85 is fixed. Further, a waste driving pulley 86 is fixed to a waste driving shaft 59 that is pivotally supported by the waste driving case 73. A waste drive belt 89 is stretched between the handling cylinder output pulley 85 and the waste drive pulley 86 via a tension roller 87 and an idle roller 88. The waste chain 34 is driven via the waste drive belt 89 in conjunction with the handling cylinder 26.

  The tension roller 87 is pivotally supported on one end side of a tension arm 90 that is rotatably fitted on the handle cylinder shaft 58. The other end side of the tension arm 90 is connected to the fixed part of the threshing device 5 by a tension spring 91, and tension is applied to the rejection drive belt 89. A support bracket 92 is fastened to the outlet side plate 84 of the threshing device 5, and an idle roller 88 is rotatably supported on the support bracket 92.

  As shown in FIGS. 7 and 8, the lifting mechanism 76 described above has a lifting lever 93 that allows an operator to manually lift the evacuation chain 34, and a lifting cam 94 that is fixed to the lifting lever 93. A lifting shaft 97 is erected on a case mounting seat 95 of the rejection drive case 73 via a shaft bracket 96, and a base end portion of the lifting lever 93 is pivotally supported on the upper end side of the lifting shaft 97. The elevating guide boss 98 is fitted on the elevating shaft 97 so as to be movable up and down (slidable), and the cam floor plate 99 is fixed to the upper end surface of the elevating guide boss 98. A lifting cam 94 is in contact with the flat upper surface of the cam floor plate 99 from above.

  Further, the elevating guide boss 98 and the cam floor plate 99 are fastened to the support arm 100 provided on the fourth upper surface frame 75 by bolts 101. Therefore, when the lifting lever 93 is rotated from the imaginary line position of FIG. 8 to the solid line position, the lifting cam 94 is rotated from the imaginary line position of FIG. 8 to the solid line position, and the lifting shaft 97 is guided by the lifting guide boss 98. Is pulled upward, and the case mounting seat 95 is moved upward. That is, the front end side of the waste chain 34 together with the case mounting seat 95 and the waste drive case 73 moves upward with respect to the waste holding body 78.

  As shown in FIGS. 5, 7, and 8, the lifting guide body 102 made of a round bar member, which is integrally fixed to the case mounting seat 95 by welding, and the outlet side plate 84 of the threshing device 5 are fastened. A flat plate-shaped pressure receiving bracket body 103 made of a sheet metal integrally fixed to the support bracket 92 by welding. The pressure receiving bracket body 103 is formed with a horizontal surface portion 103 a and a vertical surface portion 103 b that contact the other end side of the lifting guide body 102.

  That is, when the lifting guide body 102 is in contact with the horizontal surface portion 103 a of the pressure receiving bracket body 103, the evacuation holding body 78 is elastically pressed to the lower surface side of the evacuation chain 34 by the evacuation holding spring 79. Between the lower surface side and the squeeze clamping body 78, the squeezing is inherited from the feed chain 6 and is nipped and conveyed.

  On the other hand, the elevating guide body 102 comes into contact with the vertical surface portion 103 b of the pressure receiving bracket body 103, and the waste chain 34 is supported in a predetermined posture against the tension of the waste drive belt 89. For example, when the lifting shaft 97 is pulled in a direction crossing the shaft core line due to the tension of the evacuation driving belt 89, a twist occurs between the lifting guide boss 98 and the lifting shaft 97, and the lifting guide boss 98 is There is a problem that the slide resistance of the lifting shaft 97 that moves up and down increases, and the rotation operation load of the lifting lever 93 increases. On the other hand, in the present embodiment, the vertical shaft 103b and the lifting guide body 102 are in contact with each other, so that the lifting shaft 97 is not pulled in the direction crossing the axis by the tension of the exclusion drive belt 89. This prevents the lifting shaft 97 from being twisted due to the tension of the evacuation drive belt 89, reduces the sliding resistance of the lifting shaft 97 that moves up and down with respect to the lifting guide boss 98, and removes the evacuation chain from the evacuation pinching body 78. The rotational operation force of the lifting lever 93 for lifting the front end side of 34 upward can be reduced.

  With the above configuration, when the waste is clogged or pinched between the waste chain 34 and the waste sandwiching body 78 during or after the harvesting work, the operator operates the lifting lever 93 to rotate it. Using the transmission case 74 on the rear end side of the saddle chain 34 as a fulcrum, the front end side of the waste chain 34 is moved upward to lift the front end side of the waste chain 34 upward relative to the waste holding body 78. Thus, the waste trapped or pinched between the waste chain 34 and the waste sandwiching body 78 can be removed.

  As apparent from the above description and FIGS. 7 and 8, the reaping device 3 having the cutting blade device 22, the threshing device 5, the feed chain 6 that supplies the cereal to the barrel 26 of the threshing device 5, and the feed A waste chain 34 that inherits waste from the chain 6 and is carried out of the machine, a waste holding body 78 that extends to the lower surface of the waste chain 34, and a waste chain 34 that is located above the waste holding body 78. In a combine comprising a lifting mechanism 76 for lifting, a guide body 102 is provided on either one of the threshing device 5 or the waste chain 34 to guide the lifting and lowering of the waste chain 34 in sliding contact with the other. Therefore, the guide body 102 can stably support the lifting chain 34 that can be lifted upward, and the lifting mechanism 76 and the like can be easily configured.

  As is clear from the above description and FIGS. 7 and 8, the exhaust chain 34 is provided with an exhaust drive case 73 that transmits power to the drive shaft 59 on one end side of the exhaust chain 34. Since the guide body 102 is fixed via the mounting seat 95, the waste chain 34 on the side of the waste drive case 73, which is a heavy object, can be stably supported by the guide body 102, for example, waste that is easily clogged with waste. Even in the structure in which the evacuation drive case 73 is disposed on the exhaust feed start end side of the rod chain 34, the exhaust feed start end side of the exhaust chain 34 is simply lifted up, and the exhaust feed start end side of the exhaust chain 34 Easily remove the waste clogged with

  As apparent from the above description and FIGS. 7 and 8, the guide body 102 is formed by a rod-shaped member, and the guide body 102 is slid onto the pressure receiving bracket body 103 as a flat body extending in the ascending / descending direction of the discharge chain 34. Since the exhaust chain 34 conveys the waste or the lift chain 34 is lifted upward, it resists the tension of the waste drive belt 89 and the like. Thus, the exhaust chain 34 can be stably supported by the guide body 102 and the pressure receiving bracket body 103.

  As shown in FIGS. 4 and 6, the auxiliary conveyance tine 108 is disposed in the transmission case 74, and the auxiliary conveyance tine 108 is provided on the tip side of the evacuation chain 34 so as to be substantially parallel to the evacuation chain 34. And the auxiliary conveying tine 108 conveys the waste. On the other hand, the rear end side (feed end side) of the feed chain 6 is pivotally supported on the left side of the threshing device 5 via a lateral movement fulcrum (vertical axis) 104, and the front end side of the feed chain 6 is supported. In the structure in which the left side plate 106 of the threshing device 5 is fixed to the feed chain frame 105 that rotates about the horizontal movement fulcrum 104, the left side plate 106 is integrated with the feed chain 6. Is configured to open the left side of the threshing device 5 by moving in the horizontal direction.

  Further, the rear end side of the waste auxiliary conveyance guide rod 110 is fixed to the fourth basket 109 of the threshing device 5, and the waste auxiliary conveyance guide rod 110 is arranged on the lower surface side of the auxiliary conveyance tine 108. Between the lower surface side of the auxiliary transport tine 108 and the waste auxiliary transport guide rod 110, the waste tip side is taken in and transported. On the other hand, a rubber cap 107 with a slit such as a grommet is fitted into the through hole of the left side plate 106. The left side plate 106 is made to penetrate the front end side of the waste auxiliary conveyance guide rod 110 through the rubber cap 107, and the tip of the waste fed from the feed chain 6 enters the lower side of the waste auxiliary conveyance guide rod 110. Is preventing.

  Therefore, the tip side of the waste enters the lower side of the waste auxiliary conveyance guide rod 110, and the conveyance posture of the waste conveyed between the lower surface side of the auxiliary conveyance tine 108 and the waste auxiliary conveyance guide rod 110 is disturbed. Can be prevented. Further, the left side plate 106 can be moved laterally together with the feed chain 6 to largely open the left side surface side of the threshing device 5, and maintenance of the swing sorter 27 and the like can be easily performed. In addition, since the through hole of the left side plate 106 that penetrates the front end side of the discharge assisting conveyance guide rod 110 is closed by the rubber cap 107, it is possible to prevent dust and the like from blowing out from the through hole of the left side plate 106. And compared with the structure which fastens the front end side of the exclusion auxiliary conveyance guide rod 110, the components which fasten the front end side of the exclusion auxiliary conveyance guide rod 110 can be reduced.

  Next, the attachment structure of the tension roller 87 according to the embodiment of the present invention will be described with reference to FIG. The above-described evacuation drive shaft 59 and the round bar-shaped lifting guide body 102 are extended substantially in parallel. A tension arm 111 is pivotally supported on the lifting guide body 102 so as to be rotatable. A tension roller 87 is pivotally supported on one end side of the tension arm 111 so as to be rotatable. A tension spring 113 is connected to the spring seat 112 provided on the support bracket 92 and the other end side of the tension arm 111. The direction in which the elevating guide body 102 is moved up and down by the guide of the pressure receiving bracket body 103, that is, the direction in which the evacuation drive shaft 59 and the evacuation drive case 73 move up and down, and the tension direction of the tension spring 113 are substantially the same direction. It forms so that it may become.

  Therefore, the elevating guide body 102 can be used as a fulcrum shaft of the tension arm 111, and the attachment structure of the tension arm 111 can be easily configured. Further, the lifting guide body 102 as a fulcrum shaft of the tension arm 111 can be moved in the direction of lifting the waste chain 34 and the waste drive case 73, and the waste drive belt 89 is hardly increased in tension. The front end side of the chain 34 can be lifted. On the other hand, the tension spring 113 is reduced in the direction in which the waste chain 34 and the waste drive case 73 are lifted. The spring force of the tension spring 113 acts as a force for lifting the front end side of the rejection chain 34.

  As is apparent from the above description and FIG. 9, an exhaust drive belt 89 that transmits the drive force of the exhaust chain 34 is provided, and the exhaust drive shaft 59 of the exhaust drive case 73 is exhausted via the exhaust drive pulley 86. Since the saddle drive belt 89 is connected, the tension arm 111 is attached to the waste drive case 73, and the waste drive belt 89 is tensioned via the tension roller 87 supported by the tension arm 111. When the lifting chain 34 is lifted, the guide body 102 as a fulcrum shaft of the tension arm 111 can be moved in the lifting direction of the lifting chain 34, and the lifting chain 34 is lifted to prevent the tension of the lifting drive belt 89 from increasing. Thus, the lifting operation force of the waste chain 34 can be easily reduced.

  As apparent from the above description and FIG. 9, since the tension arm 111 is rotatably attached to the guide body 102, a fulcrum shaft of the tension arm 111 can be formed by the guide body 102. There is no need to provide a special fulcrum shaft, and the attachment structure of the tension arm 111 can be easily configured.

  As is clear from the above description and FIG. 9, a tension spring 113 for tensioning the exclusion drive belt 89 is connected to the tension arm 111, and the tension spring 113 is pulled in the pulling direction of the lifting mechanism 76. The lifting chain 34 is configured to be in the substantially same direction as the lifting direction of the waste chain 34. Therefore, when lifting the waste chain 34, the tension arm 111 moves in the lifting direction of the waste chain 34. The tension spring 113 can be reduced to reduce the pulling force, and the lifting chain 34 can be lifted to reduce the tension of the discharging drive belt 89, and the lifting chain 34 can be lifted. Can be easily reduced.

It is a side view of a combine. It is the same top view. It is a power transmission system diagram of a combine of an embodiment of the present invention. It is a top view which shows the attachment structure of a waste chain. It is a side view of a waste chain. It is a front view of a waste chain. It is a perspective view of the waste chain from diagonally upward. It is a front view of a lifting mechanism. It is a rear view of the tension arm of the embodiment of the present invention.

DESCRIPTION OF SYMBOLS 3 Cutting device 5 Threshing device 6 Feed chain 22 Cutting blade device 26 Handling cylinder 34 Exhaust chain 59 Exclusion drive shaft 73 Exclusion drive case 76 Lifting mechanism 78 Exclusion pinching body 86 Exclusion drive pulley 87 Tension roller 89 Exclusion drive Belt 102 Lift guide body 103 Pressure receiving bracket body (planar body)
111 Tension arm 113 Tension spring

Claims (1)

A reaping device having a cutting blade, a threshing device, a feed chain for supplying cereal to a handling cylinder of the threshing device, a waste chain that inherits waste from the feed chain and carries it out of the machine, and this waste In a combine comprising: a waste pinching body extending to the lower surface side of the saddle chain; and a lifting mechanism that lifts the waste chain above the waste pinching body.
On one of the threshing apparatus or the straw discharge chain, a structure in which the guide body Ru provided which is adapted in sliding contact with the other guide the lifting of the straw discharge chain,
The combine is characterized in that the guide body is formed of a rod-shaped member, and the guide body is slidably brought into contact with a flat body extending in the raising / lowering direction of the waste chain .

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