JPS6322153Y2 - - Google Patents

Description

[Detailed description of the invention] The invention is a crawler device used as a traveling device for combine harvesters, etc. Specifically, the crawler device is pivoted to a truck frame so that its front and rear ends can move up and down in a reverse manner. Supporting wheels for the crawler belt at both front and rear ends of the swinging member,
Similarly to the configuration in which each track wheel is configured to be able to move up and down independently, this system suppresses the upward separation of the track wheels from the crawler belt due to changes in the undulation of the ground.
The present invention relates to a crawler device configured to prevent the wheels from coming off due to changes in the undulation of the ground, while simplifying the wheel support structure.

In such a crawler device, when the crawler belt tilts to the left or right due to one of the right and left sides of the crawler belt riding on a protrusion on the ground, the inclination causes the contact between the crawler belt and the rolling wheels. When the engagement in the width direction (hereinafter referred to as the lateral direction) of the crawler belt becomes loose and the crawler belt vibrates due to riding on a protrusion, etc., the crawler belt easily There is an inconvenience that the engagement with the wheel is released and the wheel comes off. In particular, the rollers have two holes formed on both sides of the row of holes for engagement with the drive sprocket of the crawler belt.
It is not a so-called inner rolling wheel that rolls on the inner circumferential surface of the crawler belt located between the opposing surfaces of two rows of protrusions.
To avoid vibration caused by rolling on the occlusal hole row,
This tendency is remarkable in the case of a so-called outer wheel that rolls on the inner circumferential surface portion of the crawler belt located laterally outward of the row of protrusions.

Conventionally, as shown in FIG. 5, an engaging member 15 that laterally engages with an engaging portion 14 such as a row of protrusions 13 of a crawler belt 12 is fixedly connected to a truck frame 16, so that rolling wheels can be secured. 17, 17 and the crawler belt 12 in the belt width direction, thereby preventing the crawler belt 12 from coming off the track due to the left and right inclination.
As something similar to this, conventionally,
The one disclosed in Publication No. 45386 is also known.
However, in the above conventional structure, as shown in FIG.
Engagement member 1 fixedly connected to truck frame 16
5 and the lower side of the crawler belt 12, and in this state, the crawler belt 1
2, the rolling wheels 17, 17 and the engaging member 15 tend to ride on the engaging portion 14 of the crawler belt 12, and when the crawler belt 12 vibrates, the engaging member 15 unexpectedly detaches from the engaging portion 14, and eventually the intended purpose, the rolling wheel 1
There was a drawback that relative lateral displacement of the crawler belts 12 of Nos. 7 and 17 could not be prevented reliably.

The present invention was developed in view of the above-mentioned circumstances, and is designed to reliably prevent the wheels from coming off the crawler belt even if the crawler belt is tilted back and forth or left and right relative to the aircraft due to undulations of the ground, etc. The purpose is to provide a crawler belt device that obtains soot.

In the crawler device according to the present invention, a swinging member is pivotally attached to a truck frame so that its front and rear ends can move up and down in a reverse manner, and rollers relative to the crawler belt are attached to the front and rear ends of the swinging member, respectively. In the crawler device supporting the crawler belt, an engaging member that engages with an engaging portion formed on the crawler belt at a central portion between the wheels in both the inner and outer directions in the width direction of the crawler belt is provided. It is characterized in that it is connected to a swinging member that swingably supports the wheel.

In other words, in the engagement part formed on the crawler belt,
An engaging member that engages both inside and outside in the width direction of the crawler belt to prevent positional displacement between the crawler belt and the roller in the width direction is pivoted together with the swing member. By being connected to the swinging member, when the crawler belt tilts in the front-rear direction due to the undulating state of the ground, the pair of front and rear swinging wheels in contact with the crawler belt also tilts almost the same as the tilt of the crawler belt. The engaging member provided at the center between the pair of front and rear wheels also tilts along with the inclined position of the crawler belt, so that the engaging member is able to move along the inclined position of the crawler belt. The posture of engaging with the engaging portion is maintained.

Therefore, according to the characteristic structure of the present invention, the state of engagement of the engaging member with the engaging portion is maintained regardless of changes in the undulation of the ground. Even if the engagement member and the engagement portion are engaged securely,
It has now become possible to reliably prevent lateral displacement between the crawler belt and the rolling wheels, and to reliably prevent the wheels from coming off due to the tilting of the crawler belt. Moreover, since the engaging member is configured to move up and down by being connected to the swinging member, the support of the engaging member is better than, for example, when the engaging member is supported by the track frame so as to be movable up and down. The structure can be simplified.

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

The front and rear parts 2 are pivotally connected to the truck frame 1 with their respective front and rear ends moving up and down in a reverse manner.
The front and rear ends of the two swinging members 2, 2 respectively support rolling wheels 4, 4... for the crawler belt 3, and the swinging members 2, 2 are supported so that the rolling wheels 4, 4... This crawler device is provided with springs 5, 5, etc. for biasing the crawler belt into a swinging position. Two rows of protrusions 8, 8 are formed in the state of.

The rolling wheels 4 are outer rolling wheels that roll on the inner circumferential surface of the crawler belt 3 while laterally engaging the side surfaces of the projection rows 8, 8 that do not face each other.

Then, the two swinging members 2, 2 are laterally engaged with the engaging portion A constituted by the protrusion rows 8, 8 at the center between the rolling wheels 4, 4 at both ends thereof, that is, , rigid bodies 9A, 9A that engage with the opposing surfaces of the protrusion rows 8, 8, and plate springs fixedly connected to the front and rear ends of these rigid bodies 9A, 9A in a state that protrudes forward and backward relative to the rolling wheels 4, 4... Sled-like members 9, 9 consisting of 9B, 9B are connected and supported via a stay 10. The leaf springs 9B, 9B are curved so that the free end side is located lower as shown by the imaginary line in FIG.

11 is a tension wheel.

The member 9 that engages with the engaging portion A is a fourth member.
It may also be an adductor wheel as shown in the figure.

Incidentally, although reference numerals are written in the claims section of the utility model registration for convenience of comparison with the drawings, the present invention is not limited to the structure of the attached drawings by such entry.

[Brief explanation of the drawing]

Figure 1 is a side view, Figure 2 is an enlarged side view of the main parts,
FIG. 3 is an enlarged vertical sectional view of the main part, FIG. 4 is an enlarged side view of the main part showing another embodiment, and FIGS. 5 and 6 are enlarged side views showing a conventional example. 1... Truck frame, 2... Swinging member, 3
...Crawler belt, 4...Rolling wheel, 9...Engagement member, A...Engagement portion.

Claims (1)

[Claims for Utility Model Registration] 1. A swinging member 2 is provided on the truck frame 1 so as to be able to swing freely with both front and rear ends of the swinging member 2 moving up and down contrary to each other.
In the crawler device, the rollers 4, 4 for the crawler belt 3 are supported at both front and rear ends of the swinging member 2, respectively.
An engaging member 9 that engages with an engaging portion A formed in the crawler belt 3 at the center between the crawler belts 3 in both the inner and outer directions in the width direction of the crawler belt 3 is attached to A crawler device characterized in that it is connected to a swinging member 2 that is movably supported. 2 The engaging portion A is composed of two rows of protrusions 8, 8 that are located opposite each other at an appropriate interval in the width direction of the crawler belt 3, and the rolling wheels 4, 4 are arranged in the rows of protrusions 8, 8. According to claim 1 of the utility model registration claim, the engaging member 9 engages the opposite side surface of the protrusion rows 8, 8 in the width direction. crawler device. 3. The crawler device according to claim 1 or 2, wherein the engaging member 9 is a wheel. 4. The crawler device according to claim 1 or 2, wherein the engaging member 9 is a sled-shaped body.