JPS6211267Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a device for preventing crawler wheel slippage of a combine harvester.

Conventionally, when reaping with a combine harvester, one side of the crawler is often placed on a ridge during headland reaping work, and in this position, wheels tend to come off.
In addition, during flat surface reaping work, mud adhering to the outer periphery of the crawler on the reference side gets on the unharvested rice and becomes an obstacle when reaping in the next process.

The present invention is a combine harvester that is designed to prevent wheels from coming off during the above-mentioned headland reaping work, and to perform both the functions of weeding rice and removing mud adhering to the outer periphery of the crawler during flat surface reaping work. The present invention aims to provide a device for preventing crawler wheels from coming off.

The embodiment of the present invention will be described in detail based on the drawings.
1 shows a combine harvester, in which a grain culm pulling part 1 is provided at the front, a grain culm reaping part 2 is provided at the rear, and a harvested grain culm sorting part 3 is provided at the rear. A running section 4 is provided, and grain culms are harvested, threshing sorting, etc. are performed while running on the running section 4.

The running section 4 is provided with a driving wheel 5 at the front and an idler wheel 6 at the rear, and furthermore, a plurality of rolling wheels 7 are arranged between the driving wheel 5 and the idler wheel 6. 6, rolling wheels 7, and guide wheels 9 provided on the upper part of a truck frame 8, with a crawler 10 wound under tension.

The idler wheel 6 is pivotally supported by a pivot shaft 12 with respect to the truck frame 8 via a tensioning device 11 that is extendable and retractable in the front and rear directions. That is, the truck frame 8
A cylinder 13 is fixedly installed at the rear end, and the cylinder 1
A bearing plate 15 is connected to the rear end of the support rod 14 that penetrates the shaft 3, and the pivot shaft 12 of the idler wheel 6 is supported by the same bearing plate 15.
A threaded rod 17 fixed on the truck frame 8 is inserted into the pressing plate 16, and an adjusting nut 18 is inserted.
The support rod 14 is moved backward through the pressing plate 16 by screwing in the crawler 1 wound around the idler wheel 6.
I'm starting to get nervous about 0. Note that 19 is a locking nut.

At the rear end of the track frame 8, a bracket 20 is provided between the pivot 12 of the idler wheel 6 and the track frame 8, protruding toward the outside of the vehicle body a. The bracket 20 is a strip-shaped plate bent into a substantially square shape in a plan view. One end of the bracket 20 is fixed to the outer surface of the track frame 8 by a bolt 21, and the other end has a long hole 2
2 is provided and fixed to the pivot 12 by a bolt 23 through the long hole 22.

The bracket 20 has an L-shaped cross-sectional plate 24 whose lower end is bent outward, and the upper end of the plate body 24 is pivoted so as to be vertically movable by a shaft 25 installed on the outer surface of the bracket 20 in the front-rear direction. By fixing a fixing plate 26 in a shape and fixing the middle of the plate 24 to the fixing plate 26 with a suitable fixing device 27, the plate 24 can be fixed downward in a hanging manner, or can be fixed upward. It is configured so that it rotates 180 degrees and then fixes to have both the function of preventing the crawler from slipping off and the function of removing mud.

The embodiment of the present invention is constructed as described above, and when harvesting a headland with the combine harvester A, the plate 24 is rotated downward about the shaft 25 and the fixing device 27 fixes the plate. 26, so that the bent portion 24a of the plate body 24 will be located outwardly on the outside of the lower part of the crawler 10, and the crawler 10 will be fixed as the combine A runs on the slope. The lower back surface of the plate body 24 can prevent the wheels from coming off.

In addition, when reaping a flat surface, remove the fixing device 27, rotate the plate 24 upward, and then fix it to the fixing plate 26 with the fixing device 27 again.
The bent portion 24a of the plate body 24 is located on the outer periphery of the upper portion of the crawler 10, facing inward, and the bent portion 24a allows the crawler 10 to be rotated.
It is possible to scrape off mud adhering to the outer periphery of the

According to the present invention, a bracket is provided between the pivot of the idler wheel in the running section of the combine harvester and the truck frame, protruding outward from the machine body, and a plate body having an L-shaped cross section is pivotably supported on this bracket so as to be movable up and down. So,
When the plate is positioned downward, the plate can reliably prevent the crawler from slipping off during headland mowing work, and it can also be used to rotate the plate upward during flat surface mowing work. By locating the crawler so as to prevent the crawler from slipping off, the upper bent portion of the plate can remove mud adhering to the outer periphery of the crawler.

[Brief explanation of the drawing]

Figure 1 is a side view of the combine harvester of the proposed device;
The figure is an enlarged side view of the main part, Figure 3 is a perspective view of the same, Figure 4 is
The figure is an enlarged sectional view taken along the line of FIG. A... Combine harvester, a... Body, 4... Running part, 6... Idle wheel, 8... Truck frame, 1
0... Crawler, 24... Board.

Claims (1)

[Scope of utility model registration request] Between the pivot shaft 12 of the idler wheel 6 in the running section 4 of the combine harvester A and the outer surface of the truck frame 8, a strip-shaped bracket 20 bent into a substantially square shape in plan view is installed between the front and rear ends of the bracket 20. The bracket 20 has a cross section of approximately L.
The side edges of the plate body 24 bent into a letter-shaped shape are pivoted by a shaft 25 installed in the front-rear direction on the outer surface of the bracket 20, so that the plate body 24 can be moved up and down about the same shaft 25. A fixing device 27 attached to the bracket 20 is used to fix the crawler in either the upper or lower position. In the lower position, the plate 24 approaches the side of the crawler 10 to prevent derailment, and in the upper position, the same plate 24 A crawler wheel slippage prevention device for a combine harvester, characterized in that a bent portion 24a bent into a substantially L-shape of a body 24 approaches the outer circumferential surface of a crawler 10 and is also used to remove mud.