JPH0837884A - Raising structure of combine harvester - Google Patents

Abstract

PURPOSE:To obtain a raising structure of a combine harvester, capable of opening the front part of a raising device and easily maintaining and checking the raising device by disposing a forcibly grass-dividing device on the front part of the raising device in a state capable of being forward shaken on a lower support point. CONSTITUTION:In the raising structure of a combine harvester in which a forcibly grass-dividing device 2 is disposed on the front part of a raising device 2, the lower part of the forcibly grass-dividing device 2 is attached to a grass- dividing frame 11 supporting the lower part of the raising device 3 so that the forcibly grass-dividing device 2 can forward be shaken on a support point 12, and an inputting part N disposed on the upper part of the forcibly grass- dividing device 2 and an outputting part S disposed on the upper part of the raising device 3 can be interlocked, connected or separated each other through a clutch C.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combine pulling-up structure in which a forced weeding device for vertically turning a chain having a weeding claw is provided in front of a pulling device for horizontally turning a chain having a pulling claw. Regarding

[0002]

2. Description of the Related Art Conventionally, a forced weeding device for weeding culms at the front of the raising device is fixedly attached to the weeding frame at the lower part and to the raising device at the upper part. Was there.
(See, for example, Japanese Utility Model Laid-Open No. 4-106931)

[0003]

However, since the forced weeding device is arranged in the vicinity of the front part of the raising device, it does not prevent it from the aspect of maintenance and inspection of the raising device. there were. That is, as the combiner is used, the lifting device is for maintenance and inspection.For this purpose, remove the front cover to adjust the tension of the chain, check the lifting claws, lubricate, and even collect scraps that have accumulated in the case. It is necessary to remove dust and dirt. However, since the forced weeding device is arranged close to the raising device as described above,
Not only when removing the front cover of the raising device, but also when performing maintenance and inspection of the inside of the raising device after removing it.

The present invention solves the above-mentioned inconvenience, and in a combine having a forced weeding device, maintenance and maintenance of the raising device is performed.
The purpose is to facilitate inspection.

[0005]

In order to achieve the above object, the present invention is characterized in that, in the raising structure of the combine described above, a weeding device supporting the lower part of the forced weeding device and the lowering part of the raising device is supported. The forced weeding device is attached to the frame so that the forced weeding device can swing forward about the fulcrum, and an input portion provided on the upper portion of the forced weeding device and an output portion provided on the upper portion of the raising device are provided via a clutch. The point is that they can be linked together and separated.

[0006]

Since the present invention has the above-mentioned structure, in the normal use state, the power from the output portion provided in the raising device is transmitted to the input portion provided in the forced weeding device through the clutch and the raising claw is provided. And the sward claw is driven. During maintenance and inspection of the raising device, the forced weeding device was pushed forward, and the forced weeding device was swung forward with the shaft attached to the weeding frame as the fulcrum, and the front face was opened. Remove the front cover of the raising device. At this time, the clutch interposed between the output unit and the input unit can be put into the disengaged state by merely swinging the forced weeding device forward without any other operation. .

[0007]

As described above, the forced weeding device of the present invention can be swung forward around the lower fulcrum, and the front surface of the raising device is largely opened, so that the front cover of the raising device is opened. Can be removed very easily. And
Subsequent maintenance / inspection, such as adjusting the tension of the pulling chain, checking the pulling claws / lubrication work, and further removing dust and debris accumulated in the case, will interfere with the forced weeding device. It can be done easily without being done. Also,
Since the clutch can be automatically turned on / off in accordance with the forward / backward swing of the forced weeding device, the swinging operation can be easily performed.

[0008]

[Examples] FIG. 1 shows the front side of a self-leaving combine, in which a weeding tool 1 for weeding the plant origin of the planted grain culm, and a grain stalk with severe lodging are raised in the front part of this combine. And weeding device 2 for weeding, raising device 3 for raising stalks that have been weeded,
A pre-cutting processing unit A configured by a reaping unit 4 for cutting the stock of the raised grain culm, a grain culm transporting device 6 for transporting the cultivated grain culm to a rear threshing device 5, and the like is provided so as to be vertically movable. .

In the raising device 3, the chain 3b having a large number of raising claws 3a is laterally rotated by the drive sprocket 8 in the raising case 7 provided with the front cover 7a, that is, in a direction substantially perpendicular to the combine traveling direction. Raising claw 3a
Is driven so that it will rise in the state where it is arranged.

The forced weeding device 2 is arranged in front of the raising device 3, in front of the raising device 3 on the left side of the combine, which is the uncut side in the illustrated embodiment, near the left side, and has a large number of weeding claws 2a.
The chain 2b having the above is vertically rotated by the drive sprocket 10 in the weed case 9, that is, the chain 2b is driven so as to ascend while the weed claws 2a are arranged along the combine traveling direction.

At the lower part of the forced weeding device 2, the weeding device 2 is attached to the weeding frame 11 supporting the lower part of the raising device 3 so that the weeding device 2 can be swung forward around a spindle serving as a fulcrum 12. Has been.

An input unit N for receiving power from the output unit S of the raising device 3 is provided on the upper part of the forced weeding device 2. That is, the rotating body 13 provided with the input claw 13a is attached to one end of the shaft 14 so as to be slidable and integrally rotatable with respect to the shaft 14 at the input portion N, and the bevel gear mechanism 15 is provided at the other end. Has been. 16 is the rotating body 13
It is a spring for biasing.

On the other hand, a drive sprocket 17 having an output pawl 8a is attached to one end of a shaft 18 at the output portion S on the pulling device 3 side. A bevel gear mechanism 19 is provided at the other end of the shaft 18. In the above-mentioned configuration, the output claw 8a and the input claw 13a constitute a bite type clutch C, and when the forced weeding device 2 is in the normal use state, the clutch C is bite into the on state.

The rotational power of the engine (not shown) is transmitted to the shaft 18 via the bevel gear mechanism 19 to rotate the drive sprocket 8 and drive the chain 3b for raising. At the same time, on the side of the forced weeding device 2, power is transmitted from the output section S to the input section N via the clutch C,
The shaft 14 rotates, the drive sprocket 10 rotates via the bevel gear mechanism 15 and the shaft 21, and the weeding chain 2
b is driven. Reference numeral 22 is a hook type fixing tool for temporarily fixing the weeding device 2, and 23 is the weeding frame 11
It is a stopper provided in.

When the pulling device 3 is to be maintained or inspected, the fixture 22 is released and the forced weeding device 2 is pushed forward, so that the clutch C is automatically disengaged. Around the center, the stopper 23
It can be rocked until it comes into contact with, and the front surface of the raising device 3 is largely opened. As a result, the front cover 7a of the raising device 3 can be easily removed, and the maintenance / maintenance after that can be easily performed.
Inspection can be done easily. Further, because of the above-mentioned configuration, if the fixing tool 22 is removed and the shaft serving as the fulcrum 12 is pulled out, the entire forced weeding device 2 can be easily removed from the combine and vice versa. it can.

The mounting of the raising device 3 will be briefly described. As shown in FIG. 2, the lower part is a support 24 provided on the weed frame 11 and the upper part is a transmission case 20 to which the shaft 18 is mounted. It is supported. At the time of maintenance / inspection, if the lower support 24 and the upper fixture 22 are temporarily uncoupled, the lower part becomes free, and as shown in FIG. 5 and FIG. Can swing.

As a result, since the raising device 3 is provided, it is difficult to get a hand during maintenance / inspection, and it is easy to perform maintenance around the auxiliary carrying device 17 below the mowing section 4 and the grain culm carrying device 6. is there.

[Other Embodiment] In the embodiment, the forced weeding device 2 is attached only to the left side of the combine, which is the uncut side, but it may be provided on both left and right sides. The lower part of the forced weeding device 2 is attached to the fulcrum 12, which is rotatable and fixed in position, but it does not need to be fixed and the fulcrum 1 provided on the side of the forced weeding device 2
The shaft of 2 may be simply inserted from above into a U-shaped groove provided on the side of the grass frame 11. In this way, the forced weeding device 2 and the weeding frame 11 can be easily separated. On the contrary to the above, the structure may be such that the shaft which is the fulcrum 12 provided on the side of the weeding frame 11 is fitted into the concave groove of the inverted U shape provided on the side of the forced weeding device 2.

In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the attached drawings.

[Brief description of drawings]

FIG. 1 is a front side view of a combine according to the present invention.

[Fig. 2] Operation explanatory diagram of the forced weeding device

FIG. 3 is a sectional view around the clutch.

FIG. 4 is a power transmission path diagram of the retractable structure.

FIG. 5 is a front explanatory view of the combine.

FIG. 6 is an explanatory plan view of the raising device.

[Explanation of symbols]

 2 Forced weeding device 2a Weeding claw 3 Raising device 3a Raising claw 11 Weeding frame 12 Support point C Clutch N Input section S Output section

Claims (1)

[Claims] 1. A chain (3) having a pull-up claw (3a).
(b) is a combine raising mechanism in which a forced weeding device (2) for vertically turning a chain (2b) having a weeding claw (2a) is provided at the front part of the raising device (3) for horizontally turning. The lower part of the forced weeding device (2) to the weeding frame (11) supporting the lower part of the raising device (3), and the forced weeding device (2) moves forward around the fulcrum (12). An input part (N) provided on the upper part of the forced weeding device (2) and an output part (S) provided on the upper part of the raising device (3) are swingably mounted, via a clutch (C). Combined pull-up structure that can be linked together and separated.