JPS6224627Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a combine harvester in which a thresher frame is attached to a crawler traveling device.

When the above-mentioned combine harvester runs in a soft wetland, due to the difference in time between the crawler sinking into the mud in the longitudinal direction of the crawler, the crawler traveling device is in a forward uphill state, and the rear part that connects the left and right crawler wheel mounting parts The problem was that the side connecting members and the rear frame portion of the threshing machine mounting frame sank into the mud, increasing running resistance and reducing running performance in wet fields.

In addition, the reaping section also changed to a forward-upward position relative to the grain culm, which resulted in a disadvantage that the reaping performance also deteriorated.

In view of the above-mentioned circumstances, the present invention aims to eliminate the above-mentioned drawbacks through simple modification.

Next, embodiments of the present invention will be described based on the drawings.

A frame 2 for mounting a threshing machine 1 is attached to a crawler traveling device 3, a lifting device 4, a reaping device 5, and a conveying device that changes the attitude of the harvested grain culm to fall sideways and supplies it to the threshing feed chain 6. The reaping section 8 consisting of 7, etc. is attached to the threshing machine mounting frame 2.
, and a control section 9 is disposed on the lateral side of the reaping section 8,
A drive shaft 10, which can be operated on and off individually,
A transmission case 11 with a transmission mechanism 10 protruding left and right is directly connected to the front end of the threshing machine mounting frame 2, and the output shaft of an engine 13 disposed below the seat 12 and the transmission input shaft are interlocked and connected by a transmission mechanism 14. , and connecting the drive wheels 15, 15 of the crawler traveling device 3 to the drive shafts 10, 10,
It consists of a combine harvester that reaps and threshes planted grain culms.

The crawler traveling device 3 includes left and right crawler wheel mounting portions 17 extending in the front-rear direction for mounting the crawler wheels 16, and the front portions of each of the crawler wheel mounting portions 17, 17 in an upright state. a mounting portion 18 of the crawler drive wheel 15 that is connected in series;
18, and the left and right drive wheel mounting portions 18, 18
A stay 19 installed on the upper side of the track frame 20 forms a gate-shaped track frame 20 when viewed from the front, and a rubber crawler 21 having concave portions spaced apart in the longitudinal direction on the side edge of the track frame 20 is attached to the drive wheel. 15 and the rollers 16..., and on the inner surface of the winding of the crawler 21, a pushing tool for expelling mud protruding from the recess to the outside of the crawler by the ground slip of the crawler 21 during forward travel. 22 are installed diagonally at appropriate intervals in the longitudinal direction of the crawler, and the rollers 16 are installed in a state where the front, rear and center large diameter rollers 16 are located above the core metal a, and the rollers 16 are mounted on the intermediate large diameter rollers 16 with the front, rear and center large diameter rollers 16 located above the core metal a. The ring 16 is arranged so as to be located in the center of the front and rear core metals a, a, and
Front and rear wheels 16, small diameter wheels 23, 23 near 16
, so that when the roller 16 moves by a distance corresponding to 1/4 of the core metal pitch P, it rides on the upper part of the core metal a, and the small diameter rollers 24, 24 are located closer to the center in the longitudinal direction of the crawler than the core metal a. are arranged so that when the rollers 16 move by a distance corresponding to 3/4 of the core pitch P, they ride on the top of the core bar a, and thus the distance corresponding to 1/4 of the core pitch P Each time the vehicle travels a certain distance, at least two of the wheel sets ride on the core metal a, so that vertical vibration of the vehicle can be suppressed.

The left and right crawler drive shafts 10, each equipped with the threshing machine mounting frame 2,
10, and the threshing machine mounting frame 2 and the left and right drive wheel mounting parts 18,
A cylinder 2 for raising and lowering the threshing machine mounting frame 2 from the ground is provided on the rear side over 18 seconds.
5 and 25 are pivotally connected via a horizontal shaft, and the rear side of the thresher mounting frame 2 is raised above the ground when the crawler traveling device 3 is in a forward ascending state due to running in a soft wetland. This allows the reaping section 8 and the threshing machine 1 to be switched integrally to the horizontal state while preventing the rear end 2a of the threshing machine mounting frame from sinking into the mud.

and the left and right crawler wheel mounting portions 17,
A gate-shaped frame 26 is constructed over the rear end side of the threshing machine 17 so as to be swingable around the horizontal axis, and the upper frame 26a of the gate-shaped frame 26 is moved relative back and forth as the threshing machine mounting frame 2 swings. It is slidably locked and connected to the threshing machine mounting frame 2 to prevent the upper frame 26a from sinking into the mud, and to apply external force in the width direction of the rear end side of the left and right crawler wheel mounting parts 17, 17. It is designed to increase the strength against.

Incidentally, as shown in FIG. 5, the cylinder 25,
A bellows structure cover is attached to the rod of 25, and the rod is pivotally connected to the wheel mounting portions 17, 17,
The cylinder tubes may be connected by a horizontal member 27 to increase the strength against external force in the width direction of the rear end side of the wheel mounting portions 17, 17, or this reinforcing structure may be omitted.

In summary, the present invention provides the above-mentioned combine harvester with left and right crawler wheel mounting portions 17, 17 extending in the front-back direction, the crawler wheel mounting portions 17,
17 crawler drive wheel attachment parts 18, 18 connected in a standing state at the front of each, and a stay 1 constructed across the left and right drive wheel attachment parts 18, 18.
9 shows the gate-shaped truck frame 2 when viewed from the front.
0, and the threshing machine mounting frame 2 is connected to the drive wheel mounting parts 18, 18 so as to be swingable around the left and right crawler drive shafts 10, 10 of the equipment, and the threshing machine mounting frame 2 and the left and right A cylinder 2 for lifting and lowering the threshing machine mounting frame 2 from the ground is provided between the wheel mounting portions 17 and 17.
5 and 25 are pivotally connected.

That is, by forming the track frame 20 into a U-shape when viewed from the front, and configuring the rear side of the threshing machine mounting frame 2 to be movable up and down from the ground with respect to the track frame 20, the crawler traveling device 3 can be moved up and down.
Even if the truck frame 20 and the rear end 2a of the threshing machine-mounted frame are tilted forward in a soft wetland, it is possible to prevent the truck frame 20 and the rear end 2a of the threshing machine mounting frame from sinking into the mud, reducing running resistance and improving running performance in wet fields. At the same time, the reaping section 8 can be placed in a predetermined posture together with the threshing machine 1, and the reaping performance can be improved without changing the state of grain conveyance from the reaping section 8 to the threshing machine 1. .

Moreover, the left and right crawler drive wheel mounting parts 18, 1
8 are connected by the stays 19, the strength of the track frame 20 can be increased sufficiently by preventing the crawler drive shafts 10, 10 from being subjected to strain stress caused by the lifting and lowering of the threshing machine mounting frame 2, and as a whole, easy modification is possible. This has made it possible to improve running performance and reaping performance in wet fields without reducing strength.

[Brief explanation of the drawing]

The drawings show an embodiment of the combine harvester according to the present invention; FIG. 1 is an overall side view, FIG. 2 is a plan view of the crawler traveling device with main parts cut away, and FIG. 3 is a longitudinal sectional side view thereof. FIG. 4 is a longitudinal sectional front view of the crawler traveling device, and FIG. 5 is a longitudinal sectional front view of a modification thereof. 2...Thresher mounting frame, 3...Crawler traveling device, 10...Crawler drive shaft, 17...Crawler rolling wheel attachment part, 18...Crawler drive wheel attachment part, 20...Truck frame, 19...Stay , 25... cylinder, 26... portal frame,
26a... Upper frame.

Claims (1)

[Scope of claim for utility model registration] Threshing machine mounting frame 2 on crawler traveling device 3
The combine harvester is equipped with left and right crawler wheel mounting portions 17, 17 extending in the front-rear direction, and a crawler drive wheel mounting portion 1 connected in a standing state at the front of each of the crawler wheel mounting portions 17, 17.
8, 18, and the left and right drive wheel mounting portions 1
A gate-shaped truck frame 20 is formed when viewed from the front by the stays 19 constructed over the sections 8 and 18, and the threshing machine mounting frame 2 can be freely swung around the left and right crawler drive shafts 10 and 10 of the equipment. A cylinder 25 is connected to the drive wheel mounting portions 18, 18, and is located between the thresher mounting frame 2 and the left and right wheel mounting portions 17, 17 for lifting and lowering the threshing machine mounting frame 2 from the ground. , 25 are pivotally connected. A gate-shaped frame 26 is constructed across the rear end sides of the left and right crawler wheel mounting portions 17, 17 so as to be swingable around a horizontal axis, and an upper frame 26a of the gate-shaped frame 26 is mounted on the threshing machine. The combine harvester according to claim 1, wherein the combine harvester is fixedly connected to the threshing machine mounting frame 2 so as to be relatively slidable back and forth as the frame 2 swings.