JPH086B2 - Crawler traveling device such as combine - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a crawler type traveling device, and can be used for a working machine such as a combine or a transport vehicle.

[0002]

2. Description of the Related Art In a vehicle body having a pair of left and right crawlers, the crawlers are moved up and down with respect to the vehicle body to change the vehicle height for rolling adjustment, and the vehicle body. In the form of pitching the upper chassis in the front-back direction, etc., because of the low configuration of the entire vehicle body, it is easy to interfere in the vertical direction, and the vehicle body and chassis are made sufficiently low and the inclination is adjusted. There was a problem that it was difficult to do. In addition, as a conventional technique, the actual development of Sho 62-9
There is an invention of Japanese Patent No. 9940. The present invention is a combine having a crawler type traveling device, in which a pitching frame is supported on a track frame of the crawler type traveling device via a front and rear tilting pivot support part. Supports the rolling chassis via the left and right tilting pivots,
These pitching frame and rolling frame are
It has a configuration in which the longitudinal tilting cylinder and the lateral tilting cylinder are used to adjust the tilting. In this invention, since the front and rear tilting cylinders and the left and right tilting cylinders for rolling and pitching adjustments are arranged along the vertical direction as described above, the lower end of the cylinders is inevitably close to the ground, and the crawlers There was a problem that the mud carried around by the traveling device adhered and the durability deteriorated. In view of the above, the present invention, when performing rolling and pitching adjustments of the airframe, lowers the center of gravity of the airframe, reduces vertical interference, increases the degree of freedom in attitude adjustment of the vehicle body, and performs the rolling and pitching adjustments. The hydraulic cylinder to be used is arranged relatively upward, and the durability of parts is also improved.

[0003]

According to the present invention, a crawler 2 is provided on both left and right sides of a vehicle body frame 1 provided in the shape of a square girder in a plan view via parallel links 3, 3, 4, 4. The wound roller frames 9, 9 are vertically movably supported, a chassis 5 is arranged above the vehicle frame 1, and the chassis 5 extends downward from the front part of the chassis 5. The support bracket 6 is pivotally connected to the front portion of the vehicle body frame 1 via a pitching shaft 17 in the left-right direction, and the rear portion of the chassis 5 is further rearward from the rear end of the vehicle body frame 1 in plan view. A rear extension portion that extends is formed, and between the pitching bracket 7 extending downward from the rear extension portion of the chassis and the rear portion of the vehicle body frame 1, one end is pinned to the vehicle body frame 1 side with a pin. A link 24 whose side is pivotally connected, and a Berg which is pivotally supported by the pitching bracket 7. Link 21, the other end side of the link 24 and one end side of the bell crank 21 are connected via a pitching link 8 composed of a link pin 25 that pivotally connects them to each other in the vicinity of the mounting surface of the chassis 5. One end side of the pitching cylinder 26 arranged along the front-rear direction is connected to the rear part of the chassis 5, and the other end side is connected to the bell crank 21.
Is connected to the other end side of the tractor traveling device such as a combine.

[0004]

When the vehicle height is adjusted and the rolling control is performed while the vehicle body is traveling, the parallel links 3, 3, 4, 4 are rotated, and the crawler frames 9, 9 on the left and right sides of the vehicle body frame 1 are rotated. Is moved up and down so that the body frame 1 moves up and down in parallel to the running ground, or rolls. In addition, in the pitching adjustment such as changing the inclination angle of the front and rear direction of the chassis 5 or setting the chassis 5 in a horizontal posture,
By rotating the pitching link 8 with respect to the rear pitching bracket 7, the support bracket 6 at the front end of the chassis 5 is vertically rotated with respect to the front end of the vehicle body frame 1.

A support bracket 6 extending downward from the front part of the chassis 5 is pivotally supported via a pitching shaft 17 at the front part of the vehicle frame 1, and the rear part of the chassis 5 is seen in a plan view. A pitching bracket 7 extending toward the rear end side of the vehicle body frame 1 from a rear extension extending further rearward from the rear end of the vehicle body frame 1 is attached to the vehicle body frame 1 via a pitching link 8. Since it is pivotally connected, the support bracket 6
The pivotal support portion of the body frame 1 faces the front side of the body frame 1, and
The pitching bracket 7 and the pitching link 8 face the rear space of the rear portion of the vehicle body frame 1. Therefore, the existence space of the pitching bracket 7 can be widened vertically from the support bracket 6 of the chassis 5.
The vertical movement of the chassis 5 can be increased, and the chassis 5 can be moved closer to the upper side of the body frame 1 to be lowered, and the rectangular body frame 1 can be moved closer to the inner end portions of the left and right crawlers 2, 2. Thus, it can be made wider, and the rigidity can be increased for stable running. Further, since the pitching cylinder 26 that operates the bell crank 21 that constitutes the pitching link 8 is arranged in the vicinity of the mounting surface of the chassis 5 along the front-rear direction, a threshing device or the like to be mounted on the upper surface of the chassis 5. It can be arranged at a relatively high position without causing any trouble, and adhesion of mud is less and durability can be improved.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A vehicle body frame 1 is a rectangular pipe material in the form of a girder that is rectangular in a plan view, and on the left and right outside of the vehicle body frame 1, link pins 10 and 11 are projected at the front end portion and the rear end portion, respectively. The pair of parallel links 3 and 4 is pivotally supported, and the front and rear parts of the crawler frame 9 are pivotally supported by the link pins 12 and 13 on the outer ends of the lower ends of the parallel links 3 and 4, so that the crawler frame 9 is supported with respect to the vehicle body frame 1. It is configured to move up and down in a parallel state. On each of the left and right crawler frames 9,
An appropriate number of rolling wheels 14 are rotatably arranged along the outer side by a rolling wheel shaft 15, and these rolling wheels 14 and the sprocket 1 described later are arranged.
6, the crawler 2 mainly made of a rubber material is laid over and driven to run.

The chassis 5 is composed of longitudinal girders along the front-rear direction and lateral transverse girders, etc., and support brackets 6 that oppose each other from the upper side to the rear side of the body frame 1 on both the left and right sides are provided.
The support bracket 6 is provided so as to project downward, and the lower surface is inclined toward the lower front so that the front end of the support bracket 6 is thick and the rear end is thin, and the front end of the support bracket 6 is attached to the front end of the vehicle body frame 1. In the horizontal link, the horizontal pitching shaft 17 is provided in front of the link pin 10 of the parallel link 3.
Supports to rotate freely. Also, this support bracket 6
The front end of is connected to the axle housing 20 of the crawler 2 drive shaft 19 protruding from the traveling transmission case 18 to the left and right sides, and the sprocket 16 is provided on the drive shaft 19 at the left and right end portions of the axle housing 20. .

The rear pitching bracket 7 is mounted on the chassis 5.
The bell crank 21 is pivotally supported by a link pin 22, and the front end portion of the bell crank 21 is pivoted to the rear end of the body frame 1 so as to be vertically rotatable. Link pin 25 to the link 24
To form a pitching link 8, and the pitching cylinder 26 connected between the upper end of the bell crank 21 and the rear end of the chassis 5 is expanded and contracted by hydraulic pressure so that the pitching link 8 is oscillated up and down. Move the chassis 5
Is configured to move up and down around the pitching shaft 17.

The chassis 5 as described above includes a support bracket 6
Since the pitching bracket 7 and the pitching bracket 7 largely protrude downward in the front and rear portions of the vehicle body frame 1, the distance between the lower body frame 1 and the vehicle body frame 1 can be kept large. The pitching amount can be increased. The brackets 6 and 7 may be attached to the vehicle body 5 with bolts or the like.

A pair of left and right rolling cylinders 27 for rotating the parallel links 3 and 4 are connected between the rolling arm 28 integral with the rear parallel link 4 and the link pin 11 and the vehicle body frame 1, and also the front portion. A rolling arm 29 integrated with the parallel link 3 and the link pin 10 and the rolling arm 28 are connected by a rod 30, and the crawler frame 9 is moved up and down with respect to the vehicle body frame 1 by expansion and contraction of each rolling cylinder 27. You can change and adjust the vehicle height and roll it to the left or right.

On the chassis 5, a cockpit 31, an engine, a mowing device 32, a threshing device 33, a grain tank 34, etc. are mounted to constitute a combine. Further, it has a hydraulic circuit capable of expanding and contracting the bitching cylinder 26, the rolling cylinder 27, etc. by a hydraulic pump driven by this engine. In this hydraulic circuit, a pitching control valve, a rolling control valve, etc. are provided and manually operated. Alternatively, an interlocking control is performed by an inclination sensor that detects the inclination angle of the chassis.

[Brief description of drawings]

 FIG. 1 shows an embodiment of the present invention.

FIG. 1 is a side view of a part of a crawler traveling device.

FIG. 2 is a plan view thereof.

FIG. 3 is a front sectional view thereof.

FIG. 4 is a side view of the combine.

[Explanation of symbols]

 1 Body Frame 2 Crawler 3 Parallel Link 4 Parallel Link 5 Chassis 6 Support Bracket 7 Pitching Bracket 8 Pitching Link 9 Crawler Frame

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masahiro Kurokawa 1 Yakura, Tobe-cho, Iyo-gun, Ehime Prefecture, Engineering Department, Iseki Agricultural Machinery Co., Ltd. In-house (72) Inventor Kei Kugimiya 1 Yakura, Tobe-cho, Iyo-gun, Ehime Pref. Mitsunari Takahashi, Examiner, Engineering Dept., Iseki Agricultural Machinery Co., Ltd. (56) JP, U)

Claims (1)

[Claims] 1. A vehicle body frame provided in the shape of a square girder in plan view.
The crawler frames 9, 9 around which the crawlers 2 are wound are vertically movably supported on the left and right sides of the vehicle frame 1 via parallel links 3, 3, 4, 4, and the vehicle body frame 1 Chassis above
5 is arranged and extends downward from the front part of the chassis 5.
Support brackets 6 on the left and right of the front of the vehicle frame 1.
Is pivotally connected via a unidirectional pitching shaft 17,
5 is a rear view of the rear part of the vehicle body frame 1 further rearward than the rear end of the frame 1.
A rear extension that extends toward the rear of the chassis
Pitching bracket 7 extending downward from the section
Between the rear portion of the vehicle body frame 1 and the vehicle body frame 1 side
Link 24, one end of which is pivotally connected by a pin,
Bell crank 2 pivotally supported by a ching bracket 7
1, the other end of the link 24 and the bell crank 21
Consists of a link pin 25 that pivotally connects one end side
Connection via the existing pitching link 8
Pits that are arranged near the mounting surface along the front-back direction.
Connect one end of the ching cylinder 26 to the rear part of the chassis 5 and
Connect the end side to the other end side of the bell crank 21.
Crawler traveling device such as a combine.