JP3051023U - Track pad - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide an economical and durable crawler track pad that is less likely to pitch at the time of turning while stabilizing the running of a vehicle. [Structure] A reinforcing member formed along the tread surface of a shoe plate having a central lug, an elastic member fixed to the upper surface of the reinforcing member to form a flat tread surface, and attached to the shoe plate at both ends of the reinforcing member A crawler belt pad composed of bolts for forming two recessed portions on the tread side of the elastic member, symmetrically in the longitudinal direction and over the entire width to form three independent treads of a central portion and both end portions. did. .

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention relates to a particularly large and medium-sized crawler pad used for a tracked vehicle.

[0002]

[Prior art]

 In most of the conventional crawler belt pad structures, the tread surface of the crawler plate is formed flat. The flat shape is employed to stabilize the vehicle. As an example, there is a type as shown in FIG. 5, that is, the reinforcing member 11 is formed substantially W-shaped so as to follow the tread surface of the crawler plate having the central lug, and the elastic member 12 is formed on the reinforcing member 11. It is stuck to. In addition, in order to attach the crawler belt pad to the crawler board, it has a bolt 14 protruding from the tread surface side of the reinforcing member inserted into the mounting hole provided in the crawler board. (For example, see Japanese Utility Model Laid-Open No. 7-37873).

[0003]

[Problems to be solved by the invention]

 Such a tread having a bold shape or the like has a large contact surface with the running surface when the vehicle is running, and increases resistance when turning. In the case of a small vehicle, since the vehicle was relatively lightweight and small, chipping of the crawler pad was small, so this was not a problem. However, if the vehicle is medium-sized or large, and the crawler pad attached to the large-sized crawler is proportionally flat or medium-sized or large, the ground contact area becomes larger and stable. However, when turning, the resistance is large, the corners at both ends are chipped, and furthermore, pitching occurs and the aircraft jumps up.

In addition, when the elastic member is uniformly flat, the amount of rubber increases, and in the case of a medium-sized or large vehicle, the amount becomes enormous as a whole, and a large amount of rubber material is required.

[0005] Furthermore, when the elastic member is made flat evenly, in the case of a medium or large vehicle, there is a problem that the overall weight increases, the total weight of the vehicle increases, and work agility is lacking.

[0006] The present invention has been made to solve such a drawback, and even if the vehicle is medium-sized or large-sized and the crawler pad is also medium-sized or large-sized, the pitching is maintained while maintaining the conventional stability. An object of the present invention is to provide an economical and durable crawler pad that does not occur.

[0007]

[Means for Solving the Problems]

 In order to achieve the above object, the crawler belt pad of the present invention includes a reinforcing member formed along the tread surface of a track plate having a central lug, and an elastic member fixed to the upper surface of the reinforcing member to form a flat tread surface. In a crawler belt pad comprising bolts to be attached to a crawler plate at both end sides of the reinforcing member, two concave portions are formed on the tread side of the elastic member, which are symmetrical in the longitudinal direction and extend over the entire width, and are formed at the center portion. And three independent treads at both ends.

[0008] Since two recesses are formed and three independent flat treads are formed at the center and both ends, the tread is reduced in size, and the resistance during turning of the vehicle is maintained while maintaining normal running stability. And pitching can be reduced.

Further, since the recess is formed, the amount of the rubber pad can be saved.

[0010] While contributing to the reduction of the total weight of the vehicle, the running of the vehicle becomes smooth.

[0011]

[Embodiment of the invention]

 An embodiment of the invention will be described with reference to FIGS. The crawler belt pad is mounted on each of a plurality of long crawler boards orthogonal to the traveling direction of the vehicle. The crawler track pad is a long and substantially rectangular shape along the crawler board, and includes a reinforcing member 1 and a reinforcing member. It comprises a rubber pad 2 which is an elastic member fixed to the upper surface and a bolt 4 for attaching a crawler belt pad to a crawler board 5.

The reinforcing member 1 has a center lug insertion portion 1a that matches the center lug 5a of the shoe plate so as to match the tread surface of the shoe plate 5, and has a cross section that matches the inside of the front and rear lugs 5b and 5b. Are formed in a substantially W shape.

On the upper surface of the reinforcing member 1, there is a rubber pad 2 which is an elastic member integrally connected to the reinforcing member 1 by means such as vulcanization bonding. This rubber pad 2 has a tread surface which is a tread surface on the upper surface. The two recesses 2c, 2c are formed symmetrically in the longitudinal direction and gently curved over the entire width, and the central portion 2a and the two end portions 2b, 2b are spaced apart from each other at a predetermined interval (recess portion). To form two flat treads. Also, both sides 2d, 2d protrude to the front and rear lugs 5b, 5b side of the crawler board, and the lower surface contacts the upper surfaces of the front and rear lugs 5b, 5b. The total contact area of the treads of the central portion 2a and the two end portions 2b and 2b is reduced to a contact area of a medium-sized or large crawler pad to be approximately equal to that of a small or crawler pad. . In this embodiment, the thickness of the rubber pad 2 needs to be 30 mm or more to have elasticity. In the embodiment, when the size is medium or large, the rubber material is large and the weight increases, so that the rubber thickness up to the tread is made as small as possible. In addition, the recess 2c, which is not in contact during normal running, has a thickness of 30 mm so that even when the recess 2c comes into contact, a certain amount of elastic force is exerted even on the site of highly uneven gravels. is there. Therefore, the clearance between the tread surface and the upper surface of the concave portion is small, and the gap between them is a gentle curve. Of course, the depth of the concave portion of the non-contact portion can be increased if the elastic force is ignored. In this case, the rubber material can be largely saved. The flat ends 2b, 2b at both ends serve to stabilize the normal running of the vehicle. In addition, it is a part that tends to receive the load concentrated during turning and needs strength. Therefore, both ends, which are the treads of the rubber pad of the present invention, are set to the normal pressure. In the embodiment, all the treads are formed to be approximately の of the entire plane. The depth of the concave portion can be further increased if the rubber thickness is large.

[0014]

Effect of the Invention The present invention is configured as described above, and has the following effects.

[0015] Even with a medium or large crawler belt rubber pad, pitching during turning is less likely to occur because the ground contact surface is reduced.

[0016] The generation of squeaking noise during running of the vehicle or during work can be prevented.

Since the recessed portion is formed on the tread surface of the rubber pad, the amount of rubber material is reduced, and the material cost is reduced, which is reflected in the cost. That is, it can be said that it is an economy type crawler pad.

[0018] The weight is reduced by the material reduction by the concave portion, and the running operation of a medium-sized or large-sized vehicle becomes smooth.

[0019] Although it is a medium-sized and large-sized crawler belt pad, it is light in weight, so that the work of attaching it to a vehicle becomes easy and leads to an improvement in the work of attaching.

[Brief description of the drawings]

FIG. 1 is an overall perspective view showing a crawler belt rubber pad and a crawler board of the present invention.

FIG. 2 is a view of the crawler belt rubber pad of FIG.

FIG. 3 is a view of the crawler belt rubber pad of FIG.

FIG. 4 is a view of the crawler belt rubber pad of FIG.

FIG. 5 is an overall perspective view of a conventional crawler belt pad.

[Explanation of symbols]

 I Reinforcement member 1a Central lug insertion part 2 Rubber pad 2a Central tread 2b End tread 2c Depression 2d Side surface 4 Bolt 5 Footwear plate 5a Central lug 5b Front and rear lugs

Claims (1)

[Utility model registration claims] 1. A reinforcing member formed along a tread surface of a crawler plate having a center lug, an elastic member fixed to an upper surface of the reinforcement member to form a flat tread surface, and a crawler plate at both ends of the reinforcing member. In a crawler belt pad consisting of bolts for mounting on the tread, two recesses are formed in the tread of the elastic member over the entire width symmetrically in the longitudinal direction, and three independent treads of a central portion and both end portions are formed. A crawler belt pad characterized by being formed.