JP2555913Y2 - A device for preventing a crawler device having a movable rolling wheel from coming off. - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for preventing a crawler device having a movable rolling wheel from coming off.

[0002]

2. Description of the Related Art As shown in FIG. 5, in a conventional crawler traveling device of a mobile work machine such as a combine, a crawler (3) is stretched between a driving wheel (1) and a tensioning wheel (2). Fixed rolling wheels (5), (6) and (9) and movable rolling wheels (7) and (8) are attached to the track frame (4) between them. A crawler guide (27) is provided on the fixed wheel (5) (6) side, and the crawler guide (27) faces between right and left ridges for wheel guide formed on the circumferential surface of the crawler. ing.

[0003]

In the above crawler traveling device, the crawler guide (27) is attached so as to avoid the movable rolling wheels (7) and (8). When this occurred, the attachment pitch P of the guide (27) to the track frame (4) was small, which led to damage to the frame. Accordingly, an object of the present invention is to provide a crawler traveling device having a crawler guide which does not come off even if the movable rolling wheel is at the uppermost position and which is not damaged such as a frame.

[0004]

SUMMARY OF THE INVENTION The present invention provides the following apparatus to achieve the above object. That is, the front swing link and the rear swing link are rotatably supported respectively on the support shafts supported on the chassis frame, and the lower ends of the front swing link and the rear swing link are respectively rotated on the track frame. It pivots freely, and further connects the upper end of the front swing link and the upper part of the rear swing link with a rod, and provides a hydraulic cylinder mechanism between the upper end of the rear swing link and the chassis frame. The front swing link and the rear swing link are simultaneously swung and rotated by a cylinder mechanism so that the track frame can be moved up and down with respect to the chassis frame. A movable rolling wheel pivotally supported on a track frame via a balance-type link between the wheels, and a rolling wheel guide formed on an inner peripheral surface of the traveling crawler. The crawler guide is arranged between the fixed rolling wheel and the crawler guide which is arranged between the left and right ridges to prevent the traveling crawler from coming off. Extend the shape of the crawler guide upwards toward the movable wheel side while maintaining its shape, and make sure that the mounting part of the crawler guide that is provided at the extended portion does not interfere with the movable wheel when it is at the uppermost position. An apparatus for preventing a crawler device having a movable rolling wheel from coming off, characterized in that it is provided.

[0005]

When the movable wheel is displaced to the uppermost position, it does not interfere with the mounting portion of the crawler guide mounting frame, is blocked by the crawler guide, and the movable wheel does not come off the traveling crawler.

[0006]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1, a crawler (3) is stretched between a driving wheel (1) and a tensioning wheel (2) in the same manner as that shown in FIG. (5) (6) and (9) (10) and movable wheels (7) (8) are mounted on the track frame (4). The movable wheels (7) and (8) are fixed wheels (5) (6) and (9) (1).
Between 0), it is mounted on a balance-type link (15) pivotally supported (28) on the track frame (4). Further, (11) is a front swing link whose lower end is pivotally supported (12) on the track frame (4), and (13)
Is pivotally supported at the lower end to the track frame (4).
4) The rear swing links, which are all curved downward. The front swing link (11) is rotatably supported on a support shaft (17) supported on the chassis frame (16), and the rear swing link (13) is supported on a support supported on the chassis frame (16). It is rotatably supported on a shaft (18). The upper end of the front swinging link (11) and the upper part of the rear swinging link (13) are connected by a rod (19), and between the upper end of the rear swinging link (13) and the chassis frame (16). A hydraulic cylinder mechanism (20) is provided in the apparatus, and the pair of front and rear swing links (11) and (13) are simultaneously swingably rotated by the hydraulic cylinder mechanism (20).

Thus, the hydraulic cylinder mechanism (20)
The track frame (4) can be moved up and down with respect to the chassis frame (16) by simultaneously swinging and rotating the pair of swing links (11) and (13). It is possible to adjust the height and the inclination of the traveling vehicle body. In the crawler device as described above, in the present invention, the crawler guides (21) and (22) are fixed to the fixed rollers (9) so as to face between the left and right ridges (3a) and (3a) formed on the inner peripheral surface of the traveling crawler (3). And (5) and (6). The cross-sectional shapes of the crawler guides (21) and (22) are frusto-conical,
Each of them is bent upward toward any one of the movable wheels (7) and (8), and is formed into a sled shape when viewed from the front. The tail mounting frames (23) and (24) and the bow mounting frame (25)
(26) is fixed to the track frame (4) by inserting the mounting portions (23a) (24a) and (25a) (26a) respectively.

In FIG. 3, if the distance between the mounting portions (23a) and (25a) of the tail mounting frame (23) and the bow mounting frame (25) with respect to the track frame (4) is P1, this P1 distance is As compared with the conventional mounting pitch P shown in FIG. 5, the inclination at the time of mounting the crawler guide is small, and the rigidity can be increased. If the height of the mounting portion (25a) and the crawler (3) is h, this is the highest position of the movable wheel (7),
Even when the movable wheel (7) takes the uppermost position, the movable wheel (7) does not interfere with the mounting portion (25a) of the bow mounting frame (25). Also, as shown in FIG. 2, even if the crawler is deformed, the movable roller (7) can be removed from the crawler guide (21).
Can be prevented. The crawler guide (2
The same applies to 2), whereby the movable roller (8) can be prevented from coming off. As described above, even when the crawler (3) is deformed and the movable rolling wheels (7) and (8) are at the uppermost positions, the mounting portions (25a) and (26) of the crawler mounting frames (25) and (26).
The movable rolling wheels (7) and (8) do not interfere with (a), and can be prevented from coming off the crawler (3).

[0009]

According to the present invention, the crawler guide is extended upward to the movable wheel side while maintaining the cross-sectional shape acting to prevent the crawler from coming off. It does not interfere with the mounting part that is inserted into the mounting frame, so that even if the crawler deforms and the movable roller takes the uppermost position, it can be blocked by the crawler guide, and the movable roller does not come off the crawler . Further, since the mounting pitch of the crawler guide to the track frame can be widened, the inclination when mounting the crawler guide is small, the rigidity is high, and the mounting frame is not damaged.

[Brief description of the drawings]

FIG. 1 is a front view showing a device of the present invention.

FIG. 2 is an explanatory view showing an operation state of the device of the present invention.

FIG. 3 is a front view showing only a crawler guide.

FIG. 4 is a sectional view taken along line AA of FIG. 1;

FIG. 5 is an explanatory view showing a conventional crawler device.

[Explanation of symbols]

 7 Movable Wheel 8 Movable Wheel 21 Crawler Guide 22 Crawler Guide 23 Stern Crawler Guide Mounting Frame 24 Stern Crawler Guide Mounting Frame 25 Bow Crawler Guide Mounting Frame 26 Bow Crawler Guide Mounting Frame

Claims (1)

(57) [Scope of request for utility model registration] A front swing link and a rear swing link;
Rotatably on pivots supported on the chassis frame
Suspension, front swing link and rear swing link
The lower end of each is pivotally supported on the track frame
And the top of the front swing link and the top of the rear swing link.
And the upper end of the rear swing link.
A hydraulic cylinder mechanism is installed between the
This hydraulic cylinder mechanism allows the front swing link and
And the rear swing link are swung and swung all at once.
Arm can move up and down with respect to the chassis frame.
And attached to the track frame
Link between the fixed wheels on the track frame
A movable rolling wheel pivotally supported through the
Between the left and right ridges for wheel guide formed on the inner peripheral surface.
Crawler to prevent the traveling crawler from coming off
When the guides are arranged side by side with fixed wheels,
One end of the guide guides to prevent the crawler from coming off
Extending upward toward the movable wheel with the same cross-sectional shape
And a crawler
The mounting part that passes through the mounting frame of the
In a position that does not interfere with the movable wheels when
A device for preventing a crawler device having a movable rolling wheel from coming off.