JPS6040099Y2 - Traveling device in combine harvester - Google Patents

Description

[Detailed description of the invention] The crawler-type traveling device of the combine is designed to be as short as possible because the shorter the length, the better the turning performance when traveling in the field.

However, when traveling on the road, the speed is high and the road surface is hard, so the aircraft pitches a lot, and this phenomenon is especially dangerous when a straw disposal device such as a cutter or tying device is attached to the rear. When carrying out reaping and threshing work in a field with a wheel attached, it is desirable to run only on the crawler without using the tail wheel, and when driving on the road, it is desirable to run with the tail wheel attached.

However, the operation of attaching and detaching the tail wheel has the disadvantage that it is extremely labor intensive and requires wasted time.

In this invention, when the pre-processing device is raised and lowered, the tail wheel moves up and down in conjunction with it, and there is no need to separately attach or detach (or tilt) the tail wheel. It is an object of the present invention to provide a traveling device for a combine harvester that can operate wheels.

The present invention will be explained in more detail with reference to the example shown in the drawings below. Reference numeral 1 denotes a threshing device mounted on a machine base 3 having a crawler 2, and supports 4, 4 erected at the front of the machine base 3. The rear upper part of the frame 6 of the preprocessing device 5 is attached to the horizontal support shaft 4a at the upper part of the threshing device 5 so as to be tiltable up and down, and the cutter 7 is attached to the rear of the threshing device 1.

At the rear of the machine 3, an intermediate portion of a support frame 8 is pivotally supported by a support shaft 9 so as to be movable up and down, and at the rear end of the support frame 8, a vertical rotation shaft 10 and a support A tail wheel 12 is attached via an arm 11, and a winding spring 13 attached around the support shaft 9 acts on the support frame 8 in a direction that constantly moves the tail wheel 12 away from the road surface.

Further, the intermediate portion of the frame 6 of the pre-processing device 5 and the front portion of the support frame 8 are connected to a wire 1 whose intermediate portion is latched to a wheel 14.15.
When driving on the road, the frame body 6 is connected to the hydraulic cylinder 17 by operating a lever on the control section.
When the support frame 8 is pushed up further, the front part of the support frame 8 is pulled up against the winding spring 13 by the wire 16, and the tail wheel 12 descends together with the rear part of the support frame 8 and touches the ground.

Therefore, when traveling on the road, pitching does not occur even though the crawler 2 is short and the cutter 7 attached to the rear of the threshing device 1 is heavy and the center of gravity of the entire machine is relatively at the rear.

When reaping and threshing work is performed in the field, when the pretreatment device is lowered by operating the lever and operating the hydraulic cylinder 17, the wire 16 is relaxed and the support frame 8 is moved by the winding spring 13 as shown in FIG. rotate counterclockwise at
The tailwheel 12 rises and leaves the ground.

Therefore, during the reaping and threshing operation, if the pretreatment device 5 is slightly raised to the extent that it does not interfere with turning, the tail wheel 12 will not touch the ground and will not interfere with turning.

The present invention is a combine harvester in which a threshing device is mounted on a machine base having a crawler-type traveling device as described above, and a preprocessing device is provided in front of the threshing device so as to be tiltable up and down. , the support frame of the tail wheel is pivoted so that it can move up and down,
The support frame was connected to the pre-processing device in such a way that when the pre-processing device rose significantly, the tail wheel descended and touched the ground, and when the pre-processing device descended, the tail wheel rose, so that reaping and threshing work could be done in the field. When the pre-processing device is lowered to perform this operation, the tail wheel rises and leaves the ground, allowing the machine to run only on the crawler, allowing the machine to turn with a small turning radius and perform reaping and threshing work with high efficiency. .

Additionally, if the pretreatment device is lifted sufficiently to the top when traveling on the road, the tail wheel will touch the ground and the rear of the aircraft will be supported by the tail wheel, causing large pitching of the aircraft even at high running speeds. It is possible to safely and stably drive without any problems, and the fatigue of the passenger can be reduced.

[Brief explanation of the drawing]

The drawings show an example of an embodiment of the present invention,
FIG. 1 is a side view, and FIG. 2 is a side view of the main parts. 5... Pre-processing device, 6... Frame, 7.
...Cutter, butt...Support frame, 12...
...Tail wheel, 16...Wire.

Claims (1)

[Scope of utility model registration request] In a humbine in which a threshing device is mounted on a machine base having a crawler-type traveling device, and a preprocessing device is provided in front of the threshing device so as to be tiltable up and down, a support frame for the tail wheel is installed at the rear of the machine base. The support frame was connected to the pretreatment device so that it could move up and down, and the tail wheel lowered and touched the ground when the pretreatment device rose significantly, and the tail wheel rose when the pretreatment device lowered. A traveling device for a combine harvester characterized by the following.