JP2007110909A - Combine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a combine capable of performing a threshing work in a good efficiency by increasing a speed for conveying cereal culms of a feed chain 14 even on performing a manual threshing work. <P>SOLUTION: This combine is provided by installing a traveling HST28 for transmitting engine power and a FC-driving HST31 for driving a reaping device 6 and feed chain (FC), driving the reaping device and a FC14, and an FC traverse speed-changing dial 124 capable of optionally changing the traverse speed of the FC14 by operating the HST31, at a manual threshing position on a side surface of a threshing device 15, and on performing the manual threshing, capable of adjusting the traverse speed of the FC14 as safe and suitable for the manual threshing work by the operator by controlling the FC-driving HST31 with the FC-traverse speed-changing dial 124. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a combine that harvests cereal grains (such as rice, wheat, soybeans, buckwheat) and threshing them while moving the aircraft.

  In the combine, the power obtained by shifting the engine rotation with a gear-type transmission mechanism and a hydrostatic continuously variable transmission (HST) not only drives the crawler travel device, but also with a reaping device, a threshing device and an auger. Used to expel kernel discharge.

A conventional combine including the combine described in Japanese Patent Application Laid-Open No. 2002-142526 is threshed by feeding cereals harvested by a reaping device into a threshing device with a feed chain while running. Threshing can be performed efficiently because it is driven by power at a high rotational speed. At this time, when the handling of the threshing is stopped while the traveling of the combine is stopped, since the vehicle speed is zero, the feed chain is driven by the power to rotate the swinging shelf of the threshing device at a constant speed at a low speed. Driven at low speed, it took a long time to handle.
JP 2002-142526 A JP 2003-164214 A

In the combine of the said patent document 1, since the vehicle speed is zero at the time of handling operation, the grain conveying speed of the feed chain was slow, and much time was required for handling operation.
In addition, when the vehicle speed is not zero, the feed chain is configured to move and rotate at a constant speed that matches the highest speed of the cutting speed, regardless of the grain cutting speed of the cutting device. When the culm is handed over from the reaping device to the threshing device, the stock will be preceded and the head will be disturbed due to the extreme delay, resulting in poor sorting of unhandled items and branches, etc. This is a cause of clogging at a takeover portion to a waste chain (not shown) for transporting the machine to the rear of the machine body.

  Providing a dedicated device that changes the moving speed of the feed chain in order to avoid the above-mentioned problems not only costs itself, but also automatically adjusts the relationship between the device and the harvesting speed of the harvesting device. An adjustment device is required, which increases costs.

  Further, in the configuration in which power is transmitted to the feed chain only by the hydrostatic continuously variable transmission (HST), the reaping device is driven by the power from the HST, so that the feed chain is also slow when the culm cutting speed is extremely slow. There was a problem that it became difficult to take the timing of the knot work to bundle the ridges and damage the ridges. Furthermore, in the high-efficiency combine, the speed of movement of the feed chain during the handling operation is fast, and skill is required to perform the handling operation.

The combine described in Patent Document 2 is configured to stop the driving of the pre-processing unit such as the harvesting device only when the traveling of the combine is stopped, and the harvested culm is surely obtained even when the combine stops traveling on the headland or the like. However, no countermeasures have been taken for handling work.
An object of the present invention is to provide a combine that can efficiently perform a threshing operation by increasing the cereal conveyance speed of a feed chain even during a handling operation.

The above-described problems of the present invention are solved by the following solution means.
The invention according to claim 1 is a traveling device (3) using an engine (21) as a power source, a reaping device (6) for harvesting planted cereals mounted on the traveling device (3), and the reaping device. In the combine which has the feed chain (14) which conveys the grain mash cut in (6), and was equipped with the threshing device (15) which threshs the grain mash, it is for driving | running | working which changes the power of an engine (21) A transmission comprising a hydrostatic continuously variable transmission (28) and a traveling gear mechanism for shifting the power from the hydrostatic continuously variable transmission (28) for driving to drive the traveling device (3). (24), a reaping device for shifting the power of the engine (21) to drive the reaping device (6) and the feed chain (14), a hydrostatic continuously variable transmission for driving the feed chain (31), Provided at the handling position on the side of the threshing device (15) Serial is combined with a speed change unit (124) which can arbitrarily change the moving speed of the cutting device feed chain drive hydrostatic continuously variable transmission (31) the operation to feed Cheng (14).
According to a second aspect of the present invention, the feed chain moving speed transmission means (124) is provided on a surface of a cover (126) that covers a side surface of a handling cylinder (69) provided in the threshing device (15). It is a combine.

  According to the first aspect of the present invention, during handling, the feed chain moving speed changing means (124) controls the cutting device / feed chain driving HST (31) to control the moving speed of the feed chain (14). Since it can be arbitrarily changed, the handling operation can be performed after adjusting to a safe speed suitable for the skill level of the operator.

  According to the invention described in claim 2, since the feed chain moving speed changing means (124) is provided on the left side surface of the barrel cover (126) of the threshing device (15), the moving speed of the feed chain (14) with the right hand. Can be changed arbitrarily. The handling cylinder cover (126) is strong and strong, and is suitable as a mounting base for the changing means (124).

Embodiments of the present invention will be specifically described below with reference to the drawings.
FIG. 1 shows a left side view of a combine that performs a grain harvesting operation according to an embodiment of the present invention, FIG. 2 shows a schematic side sectional view of the combine threshing device of FIG. 1, and FIG. 3 drives a combine engine. FIG. 4 is a development view of a drive path as a source.
In the present specification, the left side and the right side refer to directions in which the combine moves forward, and the front side and the rear side refer to the forward side and the reverse side of the combine, respectively.

  A pair of left and right crawlers 4 made of a flexible material such as rubber are formed at the bottom of the traveling frame 2 of the combine 1 shown in FIG. 1 and the like, and the crawler 4 is used not only in dry fields but also in wet fields. Is provided with a traveling device 3 configured to be able to travel freely by slightly sinking, a cutting device 6 is mounted on the front portion of the traveling frame 2, and an engine 21 (FIG. 3) and a threshing device 15 are mounted on the upper portion of the traveling frame 2. The cockpit 20 and the Glen tank 30 are mounted.

  The reaping device 6 is configured such that the entire reaping device 6 can be lifted and lowered by a telescopic action of a reaping lifting cylinder (not shown), and cereals vegetated on the farm can be harvested at a predetermined height. The weeding tool 7 is disposed at the lower front end of the reaping device 6, the cereal pulling device (not shown) having an inclined shape behind it, and the cutting blade 5 is disposed at the rear bottom thereof. As shown in FIG. 3, between the cutting blade 5 and the starting end of the feed chain 14 of the threshing device 15, the front conveying device 8, the supply conveying device 9, etc. It is arranged so that it can.

  The operation of the harvesting device 6 of the combine 1 is performed as follows. First, the engine 21 is started and the main transmission lever 10 is operated so that the combine 1 moves forward. The cutting lever 47 shown in FIG. 3 is used to turn on the cutting clutch C1, and the threshing lever 48 is used to turn on the threshing clutch C2. Then, when the traveling frame 2 is caused to travel forward while transmitting the rotating parts of the machine body, a cutting operation and a threshing operation are started. The grain culm planted in the field is subject to weeding by the weeding tool 7 at the lower front end of the reaping device 6, and is then brought upright if it is in the lying state by the pulling action of the culm. The stock of the cereal reaches the cutting blade 5 and is cut and is scraped into the front conveying device 8 and conveyed rearward, and is inherited by the supply conveying device 9 and sequentially conveyed upward in the rear portion.

The cereal meal is inherited from the supply conveyance device 9 to the start end of the feed chain 14 and supplied to the threshing device 15. In the threshing device 15, a handling chamber 66 with a handling cylinder 69 is arranged on the upper side, and a sorting chamber 50 is integrally provided on the lower side of the handling chamber 66 to thresh and sort the supplied harvested cereal meal.
The cereals supplied to the threshing device 15 are sent to the handling room 66, which is the main threshing section shown in FIG. 2, and threshed, and the grain having the highest specific gravity passes through the first cereal cylinder 16 (FIG. 1) to the grain tank. 30 and is temporarily stored in the Glen tank 30.

  The remaining threshed culms that have reached the end of the handling chamber 66 of the threshing device 15 and are long are sandwiched between a culling chain and a culling head chain (not shown) and conveyed. After being put into a straw cutter (not shown), it is cut and released to the field.

  A grain tank helix 83 (FIG. 3) for transferring grains is provided at the bottom of the glen tank 30, and a drive system for a discharge auger comprising a vertical auger 18 and a horizontal auger 19 is provided on a helical drive shaft 84 that drives the glen tank helix 83. The grains that are connected and stored in the Glen tank 30 are discharged to the outside of the combine 1 from the discharge auger discharge port. The Glen tank spiral 83, the vertical auger spiral 89, and the horizontal auger spiral 90 are rotationally driven in response to the power of the engine 21, and convey the stored grains by the screw conveyor action of each spiral blade.

  The cereals harvested by the reaping device 6 are adjusted in the treatment depth by the front conveying device 8 and the supply conveying device 9 mounted on the reaping device 6 and inserted into the handling chamber 66 which is the main threshing portion of the threshing device 15. . A handling drum 69 pivoted in the handling chamber 66 is provided with a large number of teeth 69a on its surface, and is rotated by the power from the engine 21 by the drive mechanism shown in FIG. The cereal with the grain inserted into the handling chamber 66 is sandwiched between the feed chain 14 and the spring-biased feed chain nip 13 and is rotated while being transferred in the direction of arrow A in FIG. Threshing is performed by the tooth handling 69a of the handling drum 69. The object to be processed (grains and sawdust) separated from the cereals passes through the handling net 74 in the direction of arrow C1 (FIG. 2) and is received by the swing shelf 51.

  Since the swing shelf 51 swings up and down and back and forth by the operation of a swing shelf drive mechanism (not shown), the object to be processed receives air from the Karatsu 79 while moving in the direction of arrow D (FIG. 2). The grain having a high specific gravity passes through the sheave 53 and the sorting net 63 in the direction of arrow E, is accumulated on the first shelf 64, and is conveyed from the first spiral 65 to the grain tank 30 via the first lifting cylinder 16. The The grains stored in the Glen tank 30 are conveyed to the outside of the combine 1 via the augers 18 and 19.

  A light object to be processed on the swing shelf 51 is blown away by the swing action of the swing shelf 51 and the air blown by the fan 79a of the Karatsu 79, and moves on the sheave 53 in the direction of arrow D. The second item having a small size on the Strollac 62 is dropped in the direction of the arrow G or the like and collected on the second shelf 85, and conveyed to the second lifting cylinder 87 by the second spiral 86. The first spiral 65 and the second spiral 86 are simultaneously driven at the same speed by the driving belt 91 (FIG. 3).

  No. 2 which is a mixture of normal grains, branch boughs, sawdust and scorpion grains in which normal grains are stabbed in the sawdust, It is lifted in the direction of arrow H (FIG. 2) by the cylindrical helix 88 (FIG. 3), and discharged from the second processing chamber inlet to above the second processing chamber 67. A part of the object to be processed is obtained by separating the second object and removing the branch infarction of the branch incision grains while colliding with a number of the processing teeth 70a of the second processing cylinder 70 pivoted in the second processing chamber 67. As shown in FIG. 2, (No. 3) passes through the receiving net 74 provided below the No. 2 processing cylinder 70 in the direction of the arrow C1 and falls to the swing shelf 51, and most of the object to be processed is No. 2. From the end of the processing cylinder 70, it passes through the receiving net 74 in the direction of the arrow C <b> 2, falls on the swing shelf 51, and joins the object to be processed from the handling chamber 66.

  In addition, among the objects to be processed that have reached the end of the object to be processed conveyance direction of the handling chamber 66, short objects such as sawdust enter the dust disposal chamber 68 through the dust disposal chamber entrance, and the dust disposal chamber 68. Then, it is processed while being conveyed in the direction of the arrow K by the spiral 71a of the dust removal processing cylinder 71 rotating integrally with the second processing cylinder 70, and the waste is crushed and together with the grains remaining in the waste, the direction of the arrow C4. And passes through the net 76 and falls into the sorting chamber 50.

  As shown in FIG. 3, the gear type transmission mechanism of the transmission 24 includes a steering transmission unit 24a, an intermediate transmission unit 24b, a sub-transmission unit 24c, a counter unit 24d (input / output) from the lower side of the transmission path in the traveling transmission case 25. And the input / output unit 26 to transmit rotational power from the input / output unit 26 to the steering transmission unit 24a via the counter unit 24d, the auxiliary transmission unit 24c, and the intermediate transmission unit 24b. In addition, the traveling direction of the airframe can be turned to the right side or the left side by switching the steering transmission unit 24a.

  The traveling HST 28 is detachably attached with an input pulley 35 receiving a driving force from the engine 21 at a shaft end portion of a hydraulic input shaft 33 protruding to the side of the case 29, and further includes a hydraulic pump 28 a and a case 29. A hydraulic motor 28b having an output shaft 26a provided rotatably is provided.

  The inclination angle of the swash plate 28c of the hydraulic pump 28a can be changed by the main transmission lever 10, and the amount of oil discharged from the hydraulic pump 28a and the direction of oil discharge are changed according to the inclination angle of the swash plate 28c. The rotational speed and direction of the output shaft 26a in the input / output unit 26 connected to the hydraulic motor 28b are adjusted.

  In addition to the traveling HST 28, an HST 31 for driving the cutting device 6 and the feed chain 14 is provided in the case 32. The HST 31 is also provided with a hydraulic pump 31a and a hydraulic motor 31b, and a swash plate 31c of the hydraulic pump 31a has a speed change dial 124 or switch 124 'operated during handling, which will be described later, an HST motor 125 (see FIG. 4), and a trunnion arm. (Not shown), the inclination angle can be changed, and the output from the hydraulic motor 31b is adjusted by the inclination angle of the swash plate 31c, and the driving speeds of the cutting device 6 and the feed chain 14 are changed and adjusted. .

  The HST 28 and the HST 31 are provided with a coaxial hydraulic input shaft 33, and an input pulley 35 provided on the hydraulic input shaft 33 is connected to a pulley 38 provided on the output shaft 37 of the engine 21 from the engine 21 via a belt 40. Is transmitted and the HSTs 28 and 31 are driven. The input pulley 35 is detachably provided on the traveling frame 2 below the cockpit 20 and is configured to automatically control the fuel supply amount and output a preset rotational speed even when the load fluctuates. A belt 40 is wound around a pulley 38 provided on the output shaft 37 of the engine 21. The rotational power output from the HST 28 is transmitted to the input / output unit 26 of the transmission 24 via a transmission mechanism.

  The reaping device 6 and the feed chain 14 are connected from the HST 31 via a reaping portion transmission pulley 45 and feed chain drive pulleys 39a and 39b which are detachably attached to the shaft end portion of the output shaft 44 protruding from the input / output portion 26. The power of each is transmitted.

  Although not shown, the feed chain clutch C3 is a clutch that switches the feed chain 14 between “high speed” and “low speed” with a manual lever, and changes the speed of the feed chain 14 for cutting and conveying, thereby improving condition adaptability. . That is, the manual lever selects the high-speed side feed chain drive pulley 39a, the belt 43a, and the pulley 42a according to conditions, and the low-speed side feed chain drive pulley 39b, the belt 43b, and the pulley 42b. There is a case.

  A belt 46 is wound between the cutting input pulley 92 and the cutting portion transmission pulley 45 to transmit power to the transmission mechanism 12 that drives the cutting device 6, and the tension pulley 93 is operated by operating the cutting lever 47. The tension clutch C1 is configured such that the belt 46 is tensioned or released and the transmission of the rotational power is turned on and off.

  The threshing device 15 has a feed chain 14 that rotates in the advancing direction of the machine body at one side, and sandwiches and conveys the root portion of the cereal that has been transported by the feeding and conveying device 9 of the reaping device 6. This is a self-destructive configuration in which the chopping is sent into the handling chamber 66 and threshed, and is mounted on the traveling frame 2 and is detachably attached with a fixture such as a bolt or nut.

  In addition, the output pulley 95 provided in the engine output shaft 37 wraps the belt 98 between the threshing input pulley 96 in the input part of the threshing device 15, and operates the tension pulley 99 by the operation of the threshing lever 48, A threshing clutch C <b> 2 that turns on and off the transmission of rotational power by tensioning or releasing the belt 98 is configured. Further, a belt 105 is wound around the engine output shaft 37 from the output pulley 101 to the grain discharge input pulley 103 of the input unit 102 of the grain discharge auger, and the helical drive shaft 84 in the Glen tank 30 is driven. ing.

  The main speed change lever 10 for switching the forward / reverse speed of the combine is interlocked with the shaft end portion of the trunnion shaft (not shown) of the HST case 29 to rotate the swash plate 28c. Therefore, when the main transmission lever 10 is rotated forward, the angle of the swash plate 28c is rotated via the linkage mechanism, the rotational speed of the output shaft 3a of the steering device 3 can be changed, and the rotational direction can be corrected. When the main speed change lever 10 is turned toward the rear side, the rotation speed of the output shaft 3a can be changed and the rotation direction can be reversed to move the machine backward. Further, the potentiometer 36 detects the operation angle of the main transmission lever 10.

  Further, when the cutting lever 47 is operated to the entering side, the tension pulley 93 tensions the belt 46 wound between the cutting unit transmission pulley 45 and the cutting input pulley 92 to turn on the tension clutch C1, and the rotational power. Is transmitted from the reaping portion transmission pulley 45 to the reaping input pulley 92 to drive each part of the reaping device 6.

  Further, when the threshing lever 48 is operated to the entry side, the tension pulley 99 tensions the belt 98 wound between the engine output pulley 95 and the threshing input pulley 96, and the threshing clutch C2 is turned on, and the rotational power is increased. Power is transmitted from the engine output pulley 95 to the threshing input pulley 96 to drive the rotating parts of the threshing device 15.

Thus, when the aircraft is moved in front of or near the cedar, the driver operates the throttle lever (not shown) to adjust the rotational speed of the working part of the aircraft, the position of the aircraft relative to the culm row, the grain After reconfirming that the height position and the like of the reaping device 6 with respect to the reed are properly selected, the main transmission lever 10 is tilted forward to select a desired work speed, and the work is started.
The processing of the cereal after harvesting is as outlined above.

  A suction fan 110 (FIG. 3) is provided at the rear of the threshing device 15, and among the dust discharged in the threshing device 15 including the dust removal processing chamber 68 (FIG. 2) The contained air is sucked by blowing by the suction fan 110 rotating via the counter shaft 111, blown out from the outlet of the suction fan 110, and released to the outside of the combine 1.

  The threshed cereals in the workpiece that have reached the end of the handling chamber 66 and are kept long are put into a waste treatment chamber (not shown). When a damper (not shown) at the inlet of the waste disposal chamber is opened, the waste falls from the inlet of the waste disposal chamber and is driven by a pulley for driving a cutter for firewood (not shown) provided on the counter shaft 111. It is transmitted and cut by the scissors cutter.

  Power is transmitted to the handling cylinder 69 of the threshing device 15 from the handling cylinder rotating shaft 113 of the pulley 112. In addition, the red pepper 79 is rotated from the pulley 115 provided on the rotary shaft 114 of the threshing input pulley 96 via the belt 117 and the pulley 118, so that the red pepper fan 79a is rotated. Further, the first helical shaft 122 and the second helical shaft 123 are driven through another pulley 116 of the rotary shaft 119, and the power is transmitted from the pulley 116 to the counter shaft 111, so that the suction fan 110 and the hook cutter are driven. The

  In the combine 1 in which the traveling HST 28 and the reaping device / feed chain drive 31 (hereinafter sometimes simply referred to as the feed chain drive HST) 31 are mounted on the transmission 24 configured of the traveling gear type transmission mechanism having the above configuration, the traveling stop A feed chain speed setting dial 124 (FIG. 1), which is a means capable of arbitrarily changing the moving speed of the feed chain 14 (the grain conveying speed), is provided at the handling work position on the left side of the machine during the handling operation sometimes performed. Yes.

FIG. 4 shows a control block for controlling the feed chain moving speed and a part of the hydraulic control circuit of the HSTs 28 and 31 and the reaping device 6. The feed chain speed setting dial 124 controls the reaping device / feed chain driving HST control motor 125. By adjusting the operation amount to change the rotation amount of the trunnion arm 31c, the inclination angle of the swash plate 31c of the hydraulic pump 31a of the feed chain driving HST 31 is set to a target value. The trunnion rotation angle is detected by the potentiometer 34.
Therefore, even a high-efficiency combine with a configuration in which the moving speed of the feed chain 14 is fast, the handling operation can be performed at a safe speed suitable for the operator by controlling the feed chain driving HST 31 independently during handling.

  As shown in the side view of the combine in FIG. 1 and the internal front view of the threshing device 15 in FIG. 5, the feed chain moving speed setting dial 124 is provided on the left side surface of the barrel cover 126. Although the grain is supplied to the feed chain 14, the right hand is free, and the moving speed of the feed chain 14 can be arbitrarily changed with the right hand. The handling cover 126 is strong and strong, and is suitable as a mounting base for the dial 124.

  An engine emergency stop switch 129 is provided in the vicinity of the feed chain moving speed setting dial 124 of the barrel cover 126. The engine emergency stop switch 129 is a switch for stopping the engine 21 in an emergency such that an operator's clothes are caught in the feed chain 14 during handling. When the engine emergency stop switch 129 is provided in the vicinity of the dial 124, It becomes easy to operate, and the configuration of the electrical parts can be arranged compactly.

  In addition, operation switches 130 and 131 for turning on and off the feed chain 14 are provided in the vicinity of the dial 124. Therefore, the feed chain 14 can be turned on and off from the operation switches 130 and 131 after the handle cereal is placed on the feed chain 14 during handling, and the handling operation can be performed safely.

  In the hydraulic circuit shown in FIG. 4, when the pair of left and right sensors 7a, 7a provided on the weeding tool 7 touch the planted culm in the field, the left and right traveling shafts of the transmission 24 including a traveling gear type transmission mechanism are provided. The structure which adjusts the advancing direction of the combine 1 automatically by changing the rotation speed of 3a, 3a is provided.

  Further, as shown in the dial plan view of FIG. 6A and the dial side view of FIG. 6B, the feed chain speed change dial 124 and the engine emergency stop switch 129 are integrated with a single operating means 132. When configured, when the operating means 132 is pushed, the engine 21 is stopped, and by rotating the operating means 132, the feed chain speed can be changed, the configuration of the electrical components can be simplified, and the configuration is compact. It becomes.

  Further, FIG. 7A shows a plan view and FIG. 7B shows a side view of another embodiment of a portion where the dial 124 of the handling cylinder cover 126 is installed. As shown in FIG. 7, the feed chain speed change switch 124 ′ (comprising a switch 124 ′ a for speeding up and a switch 124 ′ b for slowing down) and an emergency engine stop switch 129 are used as touch switches and protrude from the side surface of the barrel cover 126. It is good also as a structure which is not made to do.

  When the feed chain speed changing means is not the dial 124 but the touch switch 124 ′ shown in FIG. 7, the switches do not protrude from the handling cylinder cover 126. Therefore, when the fuselage sheet is hung, the sheet presses the switch 124 ′ and switches. It is possible to prevent such a problem that 124 'is damaged.

  Further, as shown in FIG. 8, the dial installation portion of the barrel cover 126 has on / off operation switches 140a and 140b for operation of the feed chain 14 and a feed chain speed change switch (a switch 124'a for increasing the feed chain speed). The switch 124 ′ b) for delaying the engine and the emergency engine stop switch 129 may be configured by touch switches so as not to protrude from the side surface of the barrel cover 126.

  Since these touch switch groups do not protrude from the side surface of the handling cylinder cover 126, when the machine body sheet is hung, the sheet does not press and damage the switch.

  Further, as shown in the side view of the combine in FIG. 9 and the front view of the threshing device 15 in FIG. 10, the feed chain moving speed setting dial 124, the engine emergency stop switch 129, the feed chain on / off operation switches 130 and 131 are fed. The chain cover 134 may be provided on the left side surface.

9 and 10, the feed chain 14 and the feed chain cover 134 can be integrally opened with the feed chain open frame 143 as a pivot as shown in the schematic plan view of the threshing device 15 in FIG. 11. It is. At this time, the feed chain speed change dial 124 and the feed chain operation on / off operation switches 130 and 131 are provided on the left side surface of the feed chain cover portion 134 ′ which does not move even when the feed chain 14 is opened.
For this reason, when the feed chain 14 is opened, the switch group remains on the combine body side, so that the switch harness does not expand and contract, the configuration is reliable, and trouble associated with the switch harness expansion and contraction does not occur.

Also, as shown in the graph of FIG. 12, when the hand switch group is turned on, the feed chain 14 is started at a constant rotation, and the feed chain 14 is accelerated with a set time speed gradient, and then becomes a constant speed. By controlling the moving speed of the feed chain 14 during handling, the operator's safety can be ensured during handling operations.
According to the configuration of the present embodiment, the engine emergency stop switch 129 is actuated during handling and the engine 21 is stopped, and the drive of the feed chain 14 can be stopped simultaneously.

  Conventionally, even if the engine 21 is stopped, the handling cylinder 69, the swing shelf 51 and the like cannot be stopped immediately by inertia force, and the feed chain 14 does not stop for a while. However, in the configuration of this embodiment, the engine emergency stop switch By the operation of 129, the HST 31 returns to the neutral position regardless of the operation stop of the handling cylinder 69, the swing shelf 51, etc., and the feed chain 14 immediately stops, so that damage can be reduced.

  The work vehicle of the present invention is highly likely to be used as an agricultural vehicle.

It is a left view of the combine of the Example of this invention. It is a side cross-sectional schematic of the combine threshing apparatus of FIG. It is a transmission mechanism figure of the principal part of the combine of FIG. It is a figure which shows a part of control block for feed chain moving speed control in the transmission mechanism figure of FIG. 3, HST, and the hydraulic control circuit of a cutting device. It is the front schematic of the threshing apparatus of the combine of FIG. FIG. 2 is a layout view of a feed chain moving speed change dial disposed on a handling cylinder cover of the combine threshing apparatus of FIG. 1. It is the layout (FIG. 7 (a)) of the feed chain moving speed change touch switch arrange | positioned at the barrel cover of the threshing apparatus of the combine of FIG. 1, and the front schematic diagram (FIG.7 (b)) of a threshing apparatus. It is a layout of the feed chain moving speed change touch switch that is disposed on the barrel cover of the threshing device of another embodiment of the combine of FIG. It is the layout of the feed chain moving speed change dial arrange | positioned at the feed chain cover of the threshing apparatus of the other Example of the combine of FIG. It is a front schematic diagram of the threshing apparatus of the Example of FIG. FIG. 10 is a schematic plan view of the threshing apparatus of the embodiment of FIG. 9 when the foot chain is open. FIG. 2 is a relationship diagram between a feed chain moving speed and an elapsed time of the combine of FIG. 1.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Combine 2 Traveling frame 3 Traveling apparatus 3a Output shaft 4 Crawler 5 Cutting blade 6 Cutting device 7 Weeding tool 7a Grain sensor 8 Front conveyance device 9 Feed conveyance device 10 Main transmission lever 12 Mowing device drive transmission mechanism part 13 Feed chain Pin 14 Feed chain 15 Threshing device 16 First cereal cylinder 18 Vertical auger 19 Horizontal auger 20 Pilot seat 21 Engine 24 Transmission 24a Steering transmission unit 24b Intermediate transmission unit 24c Sub transmission unit 24d Counter unit 25 Traveling transmission case 26 Input / output unit 26a Output shaft 28 HST for traveling
28a Hydraulic pump 28b Hydraulic motor 28c Swash plate 29 HST case 30 Glen tank 31 Harvesting device / Feed chain drive HST
31a Hydraulic pump 31b Hydraulic motor 31c Swash plate 32 HST case 33 Hydraulic input shaft 34 Potentiometer 35 Input pulley 36 Potentiometer 37 Engine output shaft 38 Pulley 39a, 39b Feed chain drive pulley 40 Belt 41 Feed chain drive shaft 42, 42a, 42b Feed chain Input pulley 43, 43a, 43b Belt 44 Output shaft 45 Cutting section transmission pulley 46 Belt 47 Cutting lever 48 Threshing lever 50 Sorting chamber 51 Oscillating shelf 53 Sheave 62 Strollack 63 Sorting net 64 First shelf 65 First spiral 66 Handling chamber 67 Second processing chamber 68 Dust removal processing chamber 69 Handling cylinder 69a Teeth handling 70 Second processing cylinder 70a Treatment tooth 71 Dust disposal processing cylinder 71a Spiral 74 Handling net (receiving net) 76 Net 79 Kara 79a Fan 83 Glen Tank spiral 84 spiral Shaft
85 Second shelf board 86 Second spiral
87 No. 2 Flour Cylinder 88 No. 2 Flour Cylinder Spiral
89 Vertical auger spiral 90 Horizontal auger spiral 91 Driving belt 92 Cutting input pulley
93 Tension pulley 95 Engine output pulley 96 Threshing input pulley 98 Belt 99 Tension pulley 101 Output pulley 102 Grain discharge auger input section 103 Grain discharge input pulley 105 Belt 110 Suction fan 111 Counter shaft 112 Pulley 113 Handling cylinder rotation shaft 114 Rotation shaft 115 Pulley 116 Pulley 117 Belt 118 Pulley 119 Rotary shaft 120 Cutting lift valve 121 Cutting hydraulic cylinder 122 First spiral shaft 123 Second spiral shaft
124 Feed chain speed setting dial 124 ′ Feed chain speed change touch switch 124 ′ a switch for quickening 124 ′ b switch for slowing down
125 HST control motor 126 for cutting and feed chain drive 126 Cylinder cover 129 Engine emergency stop switch 130, 131 Feed chain on / off operation switch 132 Engine stop and feed chain speed changing operation means 134 Feed chain cover 134 'Feed chain cover Portions 140a and 140b ON / OFF operation switch 143 Feed chain open frame C1 Tension clutch C2 Threshing clutch C3 Feed chain clutch

Claims (2)

A traveling device (3) that uses an engine (21) as a power source, a harvesting device (6) that harvests planted cereal grains mounted on the traveling device (3), and a grain that is harvested by the harvesting device (6) In a combine having a feed chain (14) for conveying rice cake and a threshing device (15) for threshing rice cake,
A hydrostatic continuously variable transmission (28) for shifting the power of the engine (21);
A transmission (24) comprising a traveling gear mechanism for shifting the power from the traveling hydrostatic continuously variable transmission (28) to drive the traveling device (3);
A reaping device for shifting the power of the engine (21) to drive the reaping device (6) and the feed chain (14), a hydrostatic continuously variable transmission (31) for driving the feed chain,
The moving speed of the feed chain (14) can be arbitrarily set by operating the reaping device / feed chain driving hydrostatic continuously variable transmission (31) provided at the handling position on the side of the threshing device (15). Combine with speed change means (124) which can be changed.   The combine according to claim 1, wherein the feed chain moving speed changing means (124) is provided on a surface of a cover (126) covering a side surface of a handling drum (69) provided in the threshing device (15).

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