JPH09172849A - Reaping and threshing on-off clutch in combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To stabilize a position of a clutch shaft axially supporting a threshing clutch lever and a reaping clutch lever and to keep on-off operability of both clutches satisfactory with a simple constitution. SOLUTION: This combine harvester combinedly has a threshing clutch lever 15 and a reaping clutch lever 16 by axially attaching to a clutch shaft 14 placed on a longitudinally intermediate position of a longitudinally fixed supporting lever 12 placed near an operating seat. A connecting part material 36 and another connecting part material 25 are respectively placed on right and left sides of the supporting lever 12. Furthermore, an upper part of a support frame 37 is fixed on the supporting lever 12 and a lower part of the support frame 37 is fixed on a fixing part material.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a harvesting threshing on / off clutch in a combine.

[0002]

2. Description of the Related Art A variety of work clutches are provided in a combine, but the most frequently operated clutches are a mowing clutch and a threshing clutch. At the time of mowing threshing work, the threshing clutch is turned on to drive the threshing part,
The reaping clutch is turned on and the reaper is also driven. And
When cutting the one side of the field and rotating the machine toward the other side, the cutting clutch is disengaged and the driving of the cutting unit is stopped each time.

If such a clutch is of a tension clutch type, it can be provided at a low cost. in this case,
The tension belts that reach the mowing section and the threshing section are tensioned and relaxed by abutting / releasing the tension rollers, and these tension rollers are cut through the connecting members and the cutting clutch lever and It adopts a configuration operated by a threshing clutch lever.

The reaping clutch lever and the threshing clutch lever are provided in the vicinity of the driver's seat in order to improve operability. As an example of the side-by-side configuration of the mowing clutch lever and the threshing clutch lever, there is, for example, an actual open sho-60-
In Japanese Patent No. 116828, a reaping clutch lever and a threshing clutch lever are supported by fixing one end to an intermediate portion of a support frame in the front-rear direction provided near the driver's seat and the other end to the lower surface side of the operation panel. It is mounted by a shaft, and a connecting member (rod, spring) to each tension roller is arranged in the vicinity below the supporting frame, and the upper part of the support frame is fixed to the supporting frame. , A structure in which the lower portion of the support frame is fixed to a fixing member.

Incidentally, similarly to this, the arrangement in which the mowing clutch lever and the threshing clutch lever are arranged is described in Japanese Utility Model Publication No. 57-3.
It is also disclosed in Japanese Patent No. 375.

[0006]

In a tension type clutch, however, in order to bring the tension roller into and out of contact with the tension belt against the tension of the tension belt, the tension roller is connected via a connecting member. A considerable reaction force acts on the support shaft of the clutch lever. Therefore, when the supporting strength of the supporting shaft itself is low, when the mowing clutch lever and the threshing clutch lever are coaxially mounted, for example, when one of the mowing clutch levers is turned on and off, the reaction force causes the support. The axis moves up and down. As a result, the other threshing clutch lever provided on the same support shaft moves up and down, affecting the installation state of the connecting member from this threshing clutch lever to the tension roller, and ensuring the reliable threshing clutch. There is a problem that the on / off operation is obstructed.

To solve this problem, Japanese Utility Model Laid-Open No. 60-1168
The configuration described in Japanese Patent No. 28 is a configuration in which both ends of the support shaft are fixed to an intermediate portion of a support frame in the front-rear direction provided near the driver's seat and an operation panel lower surface side, respectively. It seems that the support strength of the spindle itself is secured. However, in this configuration, since the other end of the support shaft is merely fixed to an operation panel, which is usually a flat member having low rigidity, it has a strength enough to withstand the operation reaction force of the tension clutch. Cannot be secured. Therefore, the above problem cannot be solved.

In addition, in this structure, one end of the support shaft must be fixed to the middle part of the support frame, and the other end must be fixed to the lower surface side of the operation panel. Assembly work and maintenance during work cannot be performed easily.

[0009]

The present invention employs the following technical means in order to solve the above-mentioned problems. That is, the engine 3, the input shaft 31 of the mowing unit, the input shaft 20 of the threshing unit, the mowing tension belt 33 provided between the engine 3 and the input shaft 31, the engine 3 and the input shaft 2
0 threshing tension belt 22 and tension roller for tensioning and loosening the tension belt 33.
34, a tension roller 23 for tensioning and relaxing the tension belt 22, and the tension roller 34.
Mowing clutch lever-1 for operating the
6 and a threshing clutch lever 15 for operating the tension roller 23 via a connecting member 25, and fixing the lever 15 and the lever 16 near the driver's seat in the front-rear direction. Is attached to the clutch shaft 14 provided on the intermediate position between the front and rear of the supported support rod 12,
The connecting member 36 and the connecting member 25 are arranged separately on the left and right sides of the supporting rod 12, and the supporting rod 12 is supported.
The upper portion of the support frame 37 is fixed and the support frame 3
7 is a configuration of a harvesting threshing on / off clutch in a combine in which the lower portion of 7 is fixed to a fixing member.

[0010]

When the threshing clutch lever 15 is turned on while the engine 3 is driven, the tension roller 23 presses the threshing tension belt 22 through the connecting member 25 to tension the threshing tension belt 22. The power of the engine 3 is input to the input shaft 20 of the threshing unit to drive the threshing unit.
When the reaping clutch lever 16 is turned on, the tension roller 34 presses the reaping tension belt 33 through the connecting member 36 to tension the reaping clutch belt 33, whereby the power of the engine 3 is input to the input shaft 31 of the reaper. Is input to drive the reaper.

As described above, when the clutches are turned on and off, the tension rollers 23 and 34 are brought into contact with and separated from the tension belts 22 and 33 against the tension of the tension belts 22 and 33. -23, 34 to each connecting member 25,
A considerable reaction force acts on the clutch shaft 14 that pivotally supports the clutch levers 15, 16 via 36. However, the clutch shaft 14 is provided at an intermediate position between the front and rear of the fixed support rod 12 in the front-rear direction provided near the driver's seat, and the support rod 12 has a support frame.
The upper portion of the frame 37 is fixed, and the lower portion of the support frame 37 is fixed to the fixing member.

Therefore, the support strength of the clutch shaft 14 itself is high, and even if one of the threshing clutch levers 15 is turned on and off, the reaction force can prevent the clutch shaft 14 from moving up and down. As a result, the other cutting clutch lever-1 provided on the same clutch shaft 14
6 to suppress the vertical movement, this harvesting clutch lever-16
It is also possible to suppress the effect of the connecting member 36 from the to the tension roller 34 to the installation state of the connecting member 36, and to maintain the operability of the cutting clutch on and off.

Moreover, since the connecting member 36 and the connecting member 25 are arranged separately on the right and left sides of the support rod 12, the threshing clutch lever 15 and the reaping clutch lever are disposed.
A reaction force generated when the on / off operation of 16 and 16 is applied from both left and right sides of the support rod 12 via these connecting members 25 and 36. As a result, not only the strength of the support rod 12, but also the mounting strength of the clutch shaft 14 to the support rod 12 can be advantageously constructed.

Further, the clutch shaft 14 can maintain its strength only by being supported by the supporting rod 12 without particularly being connected to other parts, and the structure can be simplified.

[0015]

As described above, according to the present invention, the position of the clutch shaft 14 that pivotally supports the threshing clutch lever 15 and the reaping clutch lever 16 is stabilized, and the on / off operability of both clutches is improved. Can be maintained. Also, the supporting rod 1
The clutch shaft 14 can also be advantageously configured in terms of mounting strength with respect to the clutch shaft 2, and the configuration can be simplified to facilitate assembly work during manufacturing, maintenance during work, and the like.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described with reference to the drawings. 1 is a frame, 2 is a traveling device mounted below the frame 1, and a cutting device is provided on the front side of the frame 1. Above the frame 1, an automatic feeding type threshing device for threshing the grain culms cut by the cutting unit is provided.

An engine 3 is provided at an upper right position on the front side of the frame 1, and an upper surface and a side surface of the engine 3 are surrounded by an engine cover-4, and a seat 5 is provided on an upper part of the engine cover-4.
Is provided. 6 is an operation unit cover provided in front of the engine 3.
It is. A transmission device chamber 7 is formed on the left side portion of the engine 3, and a transmission case 8 extending from the engine 3 to the traveling device 2 is provided in the chamber 7. Reference numeral 9 is a reaping section transmission frame. The left side of the operating portion cover 6 is located on the front side of the transmission chamber 7, a rear wall 10 is provided on the upper rear side of the transmission chamber 7, and the upper side of the transmission chamber 7 is covered with an upper wall 11.

A support rod 12 in the front-rear direction, which is fixed to the rear wall 10 on the rear side and is fixed to the operating portion cover 6 on the front side, is horizontally provided at an upper position in the transmission chamber 7. Support rod 12
Is formed of a downward U-shaped channel steel, and a bearing mounting member 13 is fixed to the upper surface of the support rod 12 at an intermediate position in the front-rear direction, and a clutch shaft 14 in the left-right direction is laterally provided on the mounting member 13.

The lower parts of the threshing clutch lever 15 and the reaping clutch lever 16 are axially fixed to the clutch shaft 14, respectively. The engine 3 is provided with an output shaft 17,
The pulley 18 and the pulley 19 are fixed to the output shaft 17, and the input shaft 20 is provided below the threshing unit.
Pully-21 is fixed to, and Pulley-19 and Pulley-21
A tension belt 22 is provided between the tension belt 22 and the tension belt 22, and a tension roller 23 is brought into contact with the tension belt 22.

The tension roller 23 is axially fixed to a swing arm 24, and the swing arm 24 has a lower end of a rod (connecting member) 25 whose upper end is axially locked to the threshing clutch lever 15 and a spring 26.
Connect through. Reference numeral 27 denotes an input shaft of the mission case 8, and the input shaft 27 includes a pulley 28 and a pulley-2.
9 is attached, and a belt 30 is wound around between the pulley 18 and the pulley 29.

Reference numeral 31 denotes a mowing input shaft provided at an upper position of the mowing section transmission frame 9, and the mowing input shaft 31 has a pulley.
32 is fixed, the tension belt 33 is wound around between the pulley 28 and the pulley 32, and the tension roller 34 contacts the tension belt 33. The tension roller 34 is attached to the swing arm 35, and
The lower end of the rod 36 is connected to the
Is connected to the cutting clutch lever 16.

At the lower position of the support rod 12 provided with the bearing mounting member 13, the upper end of the supporting frame 37 for reinforcement is fixed, and the lower end of the supporting frame 37 is
It is fixed to a fixed member such as the mission case 8. Next, the operation will be described. When the engine 3 is started and the traveling clutch is turned on, the output shaft 17 → pulley-18 → belt 30 → pulley 29
→ Input shaft 27 → Mission case 8 The rotation is transmitted and the traveling device 2 rotates to move forward and backward.

Therefore, the threshing clutch lever 15 is first
When the position shown by the solid line in the drawing is set to "ON", the rod 25 is moved upward, the swing arm 24 is rotated via the spring 2, and the tension roller 23 is pressed against the tension belt 22. The belt 22 is tensioned, the rotation of the pulley 19 is transmitted to the pulley -21 via the tension belt 22, and the input shaft 20 is rotated, so that the threshing portion is operated.

When the reaping clutch lever 16 is turned "on", the rod 36 is pulled up and the swing arm 35 is rotated to bring the tension roller 34 into contact with the tension belt 33 to tension it. -The rotation of Lee-28 is
It is transmitted to 32, and the reaper is rotated. As mentioned above,
When turning on the traveling clutch and the reaping clutch,
Threshing clutch lever 15 or cutting clutch lever
Since the tension roller 23 or the tension roller 34 is rotated by rotating the lever 16 back and forth, the supporting rod 12 applies a force each time the levers 15, 16 are rotated. When the support rod 12 is flexed by receiving it, there is a problem that switching of the lever to be operated next becomes uncertain.

However, according to the present invention, the upper end of the vertical support frame 37 is fixed to the portion of the support rod 12 where the threshing clutch lever 15 and the reaping clutch lever 16 are axially attached,
Since the lower end of the support frame 37 is fixed to the mission case 8, there is no bending of the support rod 12 and the bending when one is rotated is eliminated, so that the operation of the other clutch can be accurately performed. "it can.

[Brief description of the drawings]

FIG. 1 is a side view.

FIG. 2 is a front view.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 frame 2 traveling device 3 engine 4 engine cover 5 seat 6 operation part cover 7 transmission device room 8 transmission case 9 cutting unit transmission frame 10 rear wall 11 upper wall 12 support rod 13 mounting bracket 14 clutch Shaft 15 Threshing clutch lever 16 Cutting clutch lever 17 Shaft 18 Pulley 19 Pulley 20 Threshing input shaft 21 Pulley 22 Tension belt 23 Tension roller 24 Swing arm 25 Rod 26 Spring 27 Input shaft 28 Pulley 29 Pulley 30 Belt 31 Cutting input shaft 32 Pulley 33 Tension belt 34 Tension roller 35 Swing arm 36 Rod 37 Support frame

Claims (1)

[Claims] 1. An engine 3, an input shaft 31 of a mowing unit,
The input shaft 20 of the threshing unit, the reaping tension belt 33 provided between the engine 3 and the input shaft 31, the threshing tension belt 22 provided between the engine 3 and the input shaft 20, and the tension belt 33 are relaxed. Tension low
And a tension roller 23 for tensioning and loosening the tension belt 22, and the tension roller.
34 is a member for connecting the tension roller 23 with the reaping clutch lever 16 that operates 34 through the connecting member 36.
A threshing clutch lever 15 that is operated via the clutch is provided, and the lever 15 and the lever 16 are provided on the front-rear intermediate position of the fixed supporting rod 12 in the front-rear direction provided near the driver's seat. The connecting member 36 and the connecting member 25 are attached to the shaft 14 side by side, and the connecting member 36 and the connecting member 25 are connected to each other.
The support frame 37 is fixed to the support rod 12 and the upper portion of the support frame 37 is fixed to the support frame 12.
A harvesting threshing on / off clutch in a combine in which the lower part of the hole 37 is fixed to a fixing member.