JP2008245584A - Transmission device of combine harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To perform the reaping of cereal culms at the margin of a furrow safely and also operating the transfer after the completion of the reaping at the margin of the furrow safely by having allowances. <P>SOLUTION: This transmission device installing a raking-in pedal (2) cutting off the power transmission with a traveling device (1) by treadding, a main transmission lever (3) for changing the traveling speed of the traveling device (1), a pedal operation-checking means (A) allowing the treadding and returning of the raking-in pedal only in the state of operating the main transmission lever (3) at a neutral position or in the vicinity of the neutral position and a linking means (B) for driving a reaping part (5) by gear-operating the main transmission lever (3) in the state of holding the treadding of the raking-in pedal (2) is provided by installing a lever-checking means (C) making the main transmission lever (3) as operable only for progressing direction in the state of holding the treadding of the raking-in pedal (2). The pedal operation-checking means (A) is constituted as allowing the treadding and returning of the raking-in pedal (2) only in a state that the main transmission lever (3) is operated at the neutral position or in the vicinity of the neutral position and also a threshing clutch is ON. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a power transmission device for a combine that harvests grain by harvesting grain to be planted.

  The combine harvests cereals from the stock at the harvesting part provided at the front of the aircraft while traveling in the field and sends it backwards, and threshes with a threshing device provided at the center of the aircraft to harvest the grains. And in order to harvest the grain cocoon at the time of drought, as described in Unexamined-Japanese-Patent No. 2005-46046 or Unexamined-Japanese-Patent No. 2001-54314, it stops driving | running | working so that only a cutting device can be driven.

  In the combine described in Patent Document 1, when the depression pedal provided at the foot of the control unit is depressed, the auxiliary transmission that transmits power to the traveling device is changed to the neutral position to stop traveling, and only the cutting unit is driven. Like to do.

In the combine described in Patent Document 2, when the depression pedal provided at the foot of the control unit is depressed, the left and right side clutches in the transmission case that transmits power to the traveling device are disconnected to stop the power transmission and stop the cutting. Only the part is driven.
JP 2005-46046 A JP 2001-54314 A

  In the combine described in Patent Document 1 and Patent Document 2, when a pedal pedal provided at the foot of the control unit is depressed, power transmission to the traveling device is cut off, and a sudden braking action may be activated and feel dangerous. Also, if the stomping pedal that you stepped on is casually returned, the power transmission to the traveling device will return and the aircraft will suddenly start traveling, so the harvesting part of the combine will collide with the kite and break, or the operator will be surprised. The subsequent operation may be wrong.

  Therefore, an object of the present invention is to enable safe harvesting of grain husks at the end of the ripening and to safely operate the control device with sufficient margin for movement after the end of the ripening.

  The present invention takes the following technical means in order to solve the above-described problems. That is, in the first aspect of the invention, the depression pedal (2) that cuts off the power transmission to the traveling device (1) when depressed, and the main transmission lever (3) that changes the traveling speed of the traveling device (1), The pedal operation restraining means (A) for allowing the depression pedal (2) to be depressed and returned only when the main transmission lever (3) is operated to the neutral position or near the neutral position, and the depression pedal (2) The combine transmission device is characterized in that the connecting means (B) for driving the cutting part (5) by changing the speed of the main transmission lever (3) in the state where the pedal is held down is provided.

With this configuration, power can be intermittently connected to the traveling device 1 by depressing or returning the brake pedal 2 only when the main transmission lever 3 is operated in the neutral position or in the vicinity of the neutral position.
According to a second aspect of the present invention, there is provided a lever operation restraining means (C) that allows the main transmission lever (3) to be operated only in the forward direction in the state where the pushing pedal (2) is depressed. The combine transmission device according to claim 1, which is characterized by the above.

  With this configuration, when the take-in pedal 2 is depressed, the cutting portion 4 can be driven without operating the main transmission lever 3 forward and driving the travel device 1. In this state, the main transmission lever 3 cannot be operated backward.

  Furthermore, in the invention according to claim 3, the pedal operation check means (A) is operated only when the main transmission lever (3) is operated in the neutral position or in the vicinity of the neutral position and the threshing clutch is engaged. The combine transmission device according to claim 1, wherein the step (2) is allowed to be depressed and returned.

  With this configuration, the threshing device can be reaped by depressing the rake pedal 2 and driving the mowing unit 5 while the threshing device is always driven.

  According to the first aspect of the present invention, the scratching pedal 2 can be depressed only after the main transmission lever 3 is operated to the neutral position or near the neutral position. Therefore, the main transmission lever 3 is decelerated to reduce the traveling speed. Since the power transmission to the traveling device 1 is cut off by depressing the brake pedal 2 after the vehicle is stopped or driven at a slow speed, the sudden stop of the aircraft is reduced. Further, if the main transmission lever 3 is not operated to the neutral position or the vicinity of the neutral position, the scratching pedal 2 does not return, so that the power to the traveling device 1 is suddenly connected by casually returning the scratching pedal 2 as in the prior art. Risk of sudden start is reduced.

  According to the second aspect of the invention, after moving to the edge and decelerating the main transmission lever 3 to stop traveling, the depression pedal 2 is depressed to operate the main transmission lever 3 forward again. By driving the reaping part 4, the cocoon at the heel can be reaped, and the cocoon at the heel can be reaped by operating only the main transmission lever 3, and the operation is simplified.

  Furthermore, according to invention of Claim 3, in the state which stepped on the pedal 2, the threshing device has already been driven, and the chopped cereal meal transferred from the reaping part 5 is supplied to the threshing device. Can be threshed smoothly.

Next, embodiments of the present invention will be described with reference to the drawings.
In the present specification, the left side and the right side refer to directions when the combine is directed in the forward direction.

  As shown in FIG. 1, a crawler traveling device 1 having a pair of left and right traveling crawlers 11 traveling on the soil surface is disposed on the lower side of the combine body 10, and a weed fence 12 is provided on the front end side of the body 10. A cutting part 4 is provided. There is a driver's cab 14 with a cockpit 13 behind the mowing unit 4, and a threshing device (see FIG. 4) that carries the cereals conveyed from the mowing unit 4 over the car body 10 and carries it to thresh and sort. (Not shown) is provided at the left rear of the cab 14 and a Glen tank 15 for temporarily storing the grains threshed and sorted by the threshing device is disposed on the right side of the threshing device. The auger 16 is connected to the rear part of the grain tank 15, and the grain in the grain tank 15 is discharged to the outside of the combine.

  In the above combine, the operator operates the main transmission lever 3 and the auxiliary transmission lever 17 which are seated on the cockpit 13 and are erected on the left side to shift the engine power through the main transmission in the transmission case 9, It travels at an arbitrary speed by being transmitted to the traveling crawlers 11 and 11. When harvesting cereals, the threshing lever 5 is engaged with the threshing clutch, and the threshing apparatus is driven.

  Further, various turning travelings can be performed by tilting the steering lever 18 standing on the front side of the cockpit 13 to the left and right. That is, when the steering lever 18 is tilted in a direction to turn the combine, a speed difference is given to the left and right traveling crawlers 11 and 11 to change the traveling direction.

  On the foot floor 19 of the cab 14, as shown in FIG. 2, the parking brake pedal 20 and the scrambling pedal 2 are provided to be operated when the operator steps on the foot. The parking brake pedal 20 presses the brake disc in the transmission case 9 and stops the rotation of the traveling device 1. Further, the brake pedal 2 is used to cut off the power transmission to the traveling device 1 by operating the left and right side clutches in the transmission case 9 and is used when harvesting the culm at the heel.

  The main transmission lever 3 is connected to a trunnion shaft operation arm of a hydraulic continuously variable transmission H connected to an input shaft of a transmission case 9 via a rod interlocking mechanism (linking means) B, and this hydraulic continuously variable transmission H The steering device 1 is switched between forward, neutral and reverse, and the traveling speed is changed. As shown in FIG. 3, the main transmission lever 3 and the take-in pedal 2 connect the left and right side clutches of the transmission case 9 with wires 22 and 23 via a linkage mechanism 21 (pedal operation restraining means A) which will be described in detail later. The side clutch arm 24 and the parking brake operation arm 25 that are simultaneously operated are connected.

Further, the main transmission lever 3 may be engaged with the threshing clutch so that the threshing clutch is engaged when operated in the forward direction.
4 to 7 show the linkage mechanism 21 of the main transmission lever 3 and the take-in pedal 2. FIG. 4 shows a state in which the main transmission lever 3 is rotated forward, and FIG. 6 is in a neutral position, and FIG. 6 shows a state in which the main transmission lever 3 is rotated to the reverse side.

  First, the main speed change lever 3 is attached to a mounting plate 28 that pivots back and forth by a pivot shaft 27 via a boss 42, and one of a pivot arm 31 pivotally supported by the mounting plate 28 and a lower pivot shaft 30. The rod 29 is connected. Further, the other of the rotating arm 31 and the cam plate 34 (lever operation restraining means C) are connected by a link 33. The cam plate 34 is loosely fitted on the horizontal shaft 36. The cam plate 34 is provided with a recess 35 that forms the cam surface shown in FIG. 7, and a roller 39 of the scraping pedal 2 described later falls to restrict the movement of the scraping pedal 2. The recess 35 is formed with a relief portion 32 so that the main transmission lever 3 can be operated forward while the roller 39 is inserted, and the roller 39 is easily pulled out when the main transmission lever 3 is brought close to neutral.

  Further, when the pedal arm 40 is loosely fitted to another horizontal shaft 38 provided above the horizontal shaft 36 and the pedal arm 40 is turned around the horizontal shaft 38 by depressing the scratching pedal 2, By pulling the wire 23 connected to the rear end portion of the pedal arm 40, the side clutch arm 24 is rotated to cut off the power transmission to the traveling device 1. A roller 39 is pivotally attached to the pedal arm 40 so as to approach the outer periphery 41 of the cam plate 34.

The pivot shaft 30, the horizontal shaft 36, and the horizontal shaft 38 are attached in parallel to the same frame (not shown) so that the positional relationship can be accurately assembled.
In the state in which the main transmission lever 3 in FIG. 4 is rotated to the forward side or the main transmission lever 3 in FIG. In the state of FIG. 5 in which the main transmission lever 3 is in the neutral position, the roller 39 falls into the recessed portion 35 of the cam plate 34 and can be depressed in the state of FIG. I can do it. In this manner, the depression pedal 2 can be depressed only when the main transmission lever 3 is set to the neutral position. In the state where the depression pedal 2 is depressed, the main transmission lever 3 can be operated only to the forward side by the shape of the recess 35 of the cam plate 34.

  When the main transmission lever 3 is operated forward by depressing the brake pedal 2, the left and right side clutches are both disengaged, so that the traveling device is not driven, and the hydraulic continuously variable transmission H The cutting output shaft 9a of the transmission 9 is driven by the output rotation, and the cutting unit 4 at the front part of the combine is driven.

  In FIGS. 8 to 11, as a second embodiment of the present invention, the state in which the pushing pedal 2 can be depressed is not only related to the operation position of the main transmission lever 3 but also the operation of the auxiliary transmission lever 17 and the threshing lever 5. The linkage mechanism 21 associated with the position is shown. The auxiliary transmission lever 17 switches the output rotational speed to the traveling device 1 between high and low in the transmission case 9, and the threshing lever 5 turns on and off the drive of the threshing device as described above. Since this linkage mechanism 21 is provided at a high position of the combine machine body, mud splash from the traveling device 1 is not received, and malfunction does not occur.

  Two pivot shafts 46 and 47 are provided on the side of the cab 14 near the pivot portions of the main transmission lever 3, the auxiliary transmission lever 17, and the threshing lever 5. The first restriction plate 52, the auxiliary transmission plate 53, and the second restriction plate 54 are pivotally attached to the upper pivot shaft 47.

  The take-in restricting plate 48 is connected to the take-up pedal 2 with a wire 49 on the arm extending to one side of the pivot shaft 46 and a spring 57 that resists pulling of the wire 49 is attached. A pin 50 protrudes laterally at the tip of the arm. Therefore, when the take-in control plate 48 is depressed, the wire 49 is pulled when the take-in pedal 2 is depressed, and the pin 50 moves upward.

  A concave portion 58 into which the pin 50 is dropped is formed in the first restricting plate 52 pivotally attached to the upper pivot shaft 47, and is connected to the mounting plate 28 of the main transmission lever 3 by a link 56. Accordingly, the pin 50 of the scraping restricting plate 48 is allowed to enter the recess 58 when the main speed change lever 3 is in the neutral position and the pedal 2 can be depressed. Two protrusions 67 and 68 are provided in the concave portion 58 of the first restriction plate 52 so that the main speed change lever 3 can be easily moved from the forward side to the neutral side or from the reverse side to the neutral side in the state where the power transmission is turned off when the pushing pedal 2 is depressed. When operated, the projections 67 and 68 engage with the recess 69 of the pin 50 to prevent the speed change operation.

  The auxiliary transmission plate 53 has one end connected to the auxiliary transmission lever 17 by an arm 59 and a link 60 and the other end connected to an auxiliary transmission clutch in the transmission case 9 by a wire 61. An interlocking plate 62 provided with recesses 63 and 64 that allow the pin 50 to enter and rotate upward is integrally attached to the auxiliary transmission plate 53, and the pin 50 enters the recesses 63 and 64. By rotating the interlocking plate 62 upward, the auxiliary transmission lever 17 at the high speed or low speed position is returned to the neutral position. That is, when the depression pedal 2 is depressed, the auxiliary transmission lever 17 is forcibly returned to the neutral position even if it is in the high speed or low speed position.

  Further, the second restriction plate 54 is an L-shaped member connected to the threshing lever 5 and the link 65, and if the threshing clutch is not engaged, the outer periphery 66 of the second restriction plate 54 hits the pin 50 and the scraping restriction plate 48 is moved. It cannot be rotated, that is, the scratching pedal 2 cannot be depressed.

  The sub-transmission plate 53 and the second restricting plate 54 are engaged with the pivot shaft 47. As shown in FIG. 12, first, the boss 90 of the sub-transmission plate 53 is fitted on the pivot shaft 47, and then the second The boss 92 of the second restricting plate 54 is externally fitted to the boss 90, and the boss 91 of the interlocking plate 62 is externally fitted to the boss 90 so as to rotate well. By rotating the auxiliary transmission plate 53, the second restriction plate 54, and the interlocking plate 62 about the pivot shaft 47, the respective members can be easily assembled with high accuracy.

  As described above, the depression pedal 2 can be depressed only under the condition that the main transmission lever 3 is in the neutral position and the threshing lever 5 is engaged with the threshing clutch. Is forced to the neutral position.

FIG. 13 shows a third embodiment of the present invention.
The pivot shafts 81 and 82 are provided on the upper and lower sides of the cab 14, and the linkage mechanism 21 for the main transmission lever 3, the take-in pedal 2 and the threshing lever 5 is provided on the pivot shafts 81 and 82.

  A pivot interlocking plate 74 is pivotally supported on the lower pivot shaft 82, and a wire 76 and a spring 77 are coupled to one arm of the scrape interlocking plate 74 and the scraper interlocking plate 74. A pin 75 is projected from the other arm. The spring 77 urges the take-in pedal 2 in the return direction.

  A shift restriction plate 70 and a threshing restriction plate 83 are pivotally supported on the upper pivot shaft 81. The shift restriction plate 70 is connected to the attachment plate 28 of the main transmission lever 3 by a link 71 and rotates as the main transmission lever 3 rotates forward and backward. A concave portion 73 into which the pin 75 enters is formed on an end surface of the transmission regulating plate 70 facing the pin 75. When the main transmission lever 3 is set to the neutral position, the pin 75 can enter the concave portion 73. Or the circular-arc-shaped groove | channel which the shift control board 70 can move is formed. That is, once the pin 75 enters the recess 73, it is possible to depress the take-in pedal 2, and it is also possible to rotate the main transmission lever 3 to the forward side in the depressed state.

  Further, the threshing restriction plate 83 is connected to the arm 79 of the threshing lever 5 by the links 80 and 84, and an end face where the pin 75 hits is formed on the end face facing the pin 75, and the threshing lever 5 cuts the threshing clutch. In this state, the movement of the pin 75 is restricted and the scratching pedal 2 cannot be depressed.

That is, in this embodiment, when the threshing lever 5 is engaged with the threshing clutch and the main transmission lever 3 is in the neutral position, it is possible to depress the take-up pedal 2.
FIGS. 14, 15 and 16 show a fourth embodiment of the present invention.

  A shift sensor 85 that detects the shift position of the main shift lever 3, a scraping sensor 86 that detects the depression of the scraping pedal 2, and a threshing sensor 87 that detects whether the threshing lever 5 is engaged, each sensor 85, 86, The electrical signal 87 is input to the controller 94, the push cylinder 96 for turning on and off the left and right side clutches is operated from the controller 94 via the control valve 95, and the disc clutch 97 is operated via the proportional pressure reducing valve 98.

  The operating condition of the push cylinder 95 and the disk clutch 95 is that the shift sensor 85 detects neutrality and the threshing sensor 87 detects that the threshing clutch is engaged. Operate and turn off power. Once the power is cut off, the push cylinder 96 and the disk clutch 97 are not in power connection unless the shift sensor 85 detects neutrality even if the take-in sensor 86 is turned off.

  Although the electromagnetic left and right side clutches can be controlled only by detecting the neutrality of the speed change sensor 85 without providing the threshing sensor 87, in this case, confirm that the threshing lever 5 is in the threshing clutch. If the cereals are not harvested, the cereals will be clogged in front of the threshing device.

  Further, as shown in FIG. 15, in accordance with the operating conditions of the electromagnetic left and right side clutches, the attracting piece 89 fixed to the mounting arm 40 of the scrambling pedal 2 is attracted by the electromagnet 88 to hold the scrambling pedal 2 in the depressed state. You may make it do. When the main transmission lever 3 is set to the neutral position, the electromagnet 88 is turned off and the scratching pedal 2 is returned. In this case, the return of the scratching pedal 2 coincides with the travelable state.

It is a whole side view of a combine. It is a top view of a part of a combine. It is explanatory drawing which shows the partial interlocking mechanism of a combine. It is explanatory drawing of the interlocking mechanism which expands and shows the principal part. It is explanatory drawing of the interlocking mechanism which expands and shows the principal part. It is explanatory drawing of the interlocking mechanism which expands and shows the principal part. It is an enlarged side view of one component. It is a side view which expands and shows the principal part of 2nd Example. It is a side view which expands and shows the principal part of 2nd Example. It is a side view which expands and shows the principal part of 2nd Example. It is a side view which expands and shows the principal part of 2nd Example. It is a front view which expands and shows the principal part of 2nd Example. It is the side view and rear view which expand and show the principal part of 3rd Example. It is a side view of the principal part of 4th Example. It is a side view of the principal part of 4th Example. It is a control block diagram of the fourth embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Traveling device 2 Brake pedal 3 Main transmission lever 4 Mowing part 5 Threshing lever A Pedal operation check means B Connecting means C Lever operation check means

Claims (3)

The pedal pedal (2) that cuts off the power transmission to the traveling device (1) when depressed, the main transmission lever (3) that changes the traveling speed of the traveling device (1), and the main transmission lever (3) are neutral. A pedal operation restraining means (A) that allows the depression and return of the brake pedal (2) only when operated in the vicinity of the position or neutral position, and the main speed change lever (3) when the brake pedal (2) is held depressed. ) Is provided with connecting means (B) for driving the cutting part (5) by shifting the gears.   The combine operating mechanism according to claim 1, further comprising lever operating restraining means (C) that allows the main transmission lever (3) to be operated only in the forward direction in the state where the depression pedal (2) is depressed. Transmission device.   The pedal operation check means (A) is allowed to be depressed and returned only when the main transmission lever (3) is operated at or near the neutral position and the threshing clutch is engaged. The combine transmission device according to claim 1, wherein the combine transmission device is configured.

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