JPH065980Y2 - Crawler traveling device for agricultural machinery - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention includes a pair of front and rear movable frames in which a roller group for grounding guides of a crawler belt is supported in a cantilevered manner, and a fixed frame connected to an airframe. The present invention relates to a crawler traveling device for agricultural machinery, which is pivotally connected in a cantilever manner via swinging arms, and in which the movable frame is vertically movable with respect to a machine body.

[Conventional technology]

In this type of crawler traveling device, conventionally, for example, the actual open sho 58-1
As shown in Japanese Patent No. 50584, the movable frame is pivotally supported on the outer side of the body from the swing end of a swing arm pivotally supported in a cantilever manner from the fixed frame,
Moreover, the wheel group was cantilevered further outward from the movable frame.

[Problems to be solved by the invention]

However, in the above-mentioned conventional structure, when the weight load of the machine body is applied to the crawler traveling device, the pivot shaft supporting the rolling wheel group is loaded so as to incline in the direction in which the inside of the machine body sinks downward, and Connection between the movable frame and the swing arm Since the load is also applied to the pivotal support shaft so that the inner side of the body sinks, the tilt of both support shafts is integrated, and the support shaft swings. A large weight moment is locally applied to the arm connecting portion, which lowers the durability and may cause the rolling wheels to tilt and reduce the wheel removal preventing function.

The present invention aims to appropriately share the load of the body weight,
The purpose is to improve the durability and reduce the inclination of the rolling wheels to enhance the function of preventing wheel removal.

[Means for solving problems]

A feature of the present invention is that, in the crawler traveling device for an agricultural machine having the above-mentioned configuration, the movable frame is supported in a cantilever manner toward the inner side of the body with respect to the swing arm, and the rolling wheel group is It lies in that it is supported in a cantilevered manner toward the outer side of the fuselage with respect to the movable frame, and its action and effect are as follows.

[Action]

The pivot shaft between the movable frame and the swing arm receives a load such that the outside of the fuselage sinks due to the weight of the fuselage, and the pivot shaft between the movable frame and the wheel group is inside the fuselage. Since the load is applied so that the side sinks, the inclinations of the both pivotal shafts are opposite to each other and are offset,
The tilt of the wheel is suppressed. Further, the load moments on the both pivots are small, and a large local load is not applied.

[Effect of device]

As a result, since the vertical inclination of the rolling wheels is suppressed, the guiding action of the rolling wheels on the crawler belt is not weakened,
There is no decline in the function of preventing wheel derailment. Moreover, a large load moment is not locally applied to the pivot shaft, the degree of occurrence of fatigue fracture can be suppressed to a low level, and the durability can be improved.

〔Example〕

2 and 3 show a crawler traveling device (1) for a combine according to the present invention. This crawler traveling device (1)
Is a fixed frame (3) connected and fixed to the aircraft side frame (2)
Drive wheel attached to the front end of the vehicle via the transmission case (4)
(5), a pair of front and rear swing arms (6) on the fixed frame (3),
A rubber crawler is provided over each of a plurality of crawler grounding guide wheel groups (8) mounted on a movable frame (7) pivotally connected via (6) and a crawler tension wheel body (9). Belt (1
0) is wound, and the driving wheel body (5) is driven by the power from the transmission case (4) to rotationally drive the crawler belt (10).

On the rocking proximal ends of the rocking arms (6), (6), pivot shafts (11), (11) extending in the lateral direction are pivotally supported by penetrating the fixed frame (3). At the same time, the swinging end side is a movable frame via the pivot shafts (12), (12) extending in a cantilever shape toward the inside of the aircraft.
(7) is pivotally connected to each other, and the upper ends of the operation arms (13) and (13) connected to the above-mentioned pivotal shafts (11) and (11) upward from the inside of the body are connected to the connecting rod (14). ), The swing cylinders (6) and (6) are configured to be swingable up and down by the hydraulic cylinder (15) connected, and the movable frame is formed by the four-link mechanism.
(7) is configured to be movable up and down with respect to the body.

Then, as shown in FIG. 1, the group of rolling wheels (8) is idled on a pivot shaft (16) ... Cantilevered from the movable frame (7) toward the outside of the machine. It is supported so that maintenance work and assembly work can be performed from the outside of the machine.

It should be noted that reference numerals are added to the claims of the utility model for convenience of comparison with the drawings, but the present invention is not limited to the structure of the accompanying drawings by the entry.

[Brief description of drawings]

The drawings show an embodiment of a crawler traveling device for agricultural machinery according to the present invention. Fig. 1 is a vertical sectional front view of a main portion, Fig. 2 is a front view, and Fig. 3 is a side view. (3) …… Fixed frame, (6), (6) …… Swing arm, (7)…
… Movable frame, (8) …… Roller, (10) …… Crawler belt.

Claims (1)

[Scope of utility model registration request] 1. Rolling wheels (8) for grounding guide of crawler belt (10)
A movable frame (7) that pivotally supports the group in a cantilevered manner and a fixed frame (3) connected to the airframe form a pair of front and rear swing arms (6),
(6) A crawler traveling device for an agricultural machine, which is pivotally connected to each other in a cantilever manner and in which the movable frame (7) is vertically movable with respect to the machine body, wherein the movable frame (7)
While supporting the swinging arms (6) and (6) in a cantilevered manner toward the inside of the fuselage, and the group of the rolling wheels (8) with respect to the movable frame (7) outside the fuselage. A crawler traveling device for agricultural machines that is cantilevered toward one side.