CN209795454U

CN209795454U - Brake shoe assembly

Info

Publication number: CN209795454U
Application number: CN201920642481.4U
Authority: CN
Inventors: 邝力铨
Original assignee: Anlian Zhengzhou Construction Machinery Co Ltd
Current assignee: Anlian Zhengzhou Construction Machinery Co Ltd
Priority date: 2019-05-07
Filing date: 2019-05-07
Publication date: 2019-12-17
Anticipated expiration: 2029-05-07

Abstract

the utility model provides a brake shoe component, which comprises a brake shoe, a cam roller and a retainer, wherein the cam roller is arranged on the retainer, and the retainer is arranged on the brake shoe; the retainer is connected with the brake shoe through hole-shaft matching, and at least one hole matched with the hole-shaft is a long hole. The utility model has the advantages that: the retainer and the brake shoe are connected in a hole-shaft matching mode, and compared with the existing mode that the retainer is provided with the bulge, the retainer is not easy to fall off, so that the problem that the cam roller is easy to fall off can be solved; and the installation of the hole-shaft matching mode is simple, and the problem that the cam roller is difficult to install on the brake shoe can be solved.

Description

Brake shoe assembly

Technical Field

The utility model relates to a brake hoof subassembly.

Background

the drum brake of the truck is characterized in that a brake shoe assembly is pushed to expand by the rotation of a cam shaft, and a brake pad is contacted with a brake drum, so that the truck is braked. The brake shoe assembly is arranged on a brake bracket of the axle, the fixed end of the brake shoe assembly is connected with the brake bracket by a pin shaft, and the cam end is connected with the cam roller in a floating way.

The cam end of the brake shoe assembly needs to be provided with a cam roller, and the connection mode of the cam roller and the brake shoe generally has three modes: spring steel wire hook type, bolt clamp plate type and punch forming plate type. The spring steel wire hook type has better reliability, but the spring steel is hard and has larger elasticity, so the assembly is inconvenient; the number of bolt clamping plate type accessories is large, and the assembly process is complicated; therefore, a connection method of press-forming a plate type is more commonly used.

The connection mode of the punch forming plate type needs to adopt a retainer, the structure of the retainer is shown in fig. 1a and 1b, the retainer 1 is provided with a bulge 12 and a mounting position 11, the cam roller 2 is arranged at the mounting position 11, and the bulge 12 of the retainer is clamped at a hole position 31 of the brake shoe 3, as shown in fig. 2.

The connection mode of the punch forming plate type needs to be clamped on the brake shoe by virtue of the bulge on the retainer, and the bulge needs to bear impact force in the working process of the brake shoe, so that the problem that the bulge falls off possibly is caused; in addition, the bulge on the retainer needs to be clamped on the hole position of the brake shoe, so that the problem of difficult installation is caused.

SUMMERY OF THE UTILITY MODEL

The utility model provides a brake shoe subassembly to the problem that cam roller installed the difficulty and drops easily on the brake shoe among the solution prior art.

In order to achieve the above purpose, the utility model provides a technical scheme does:

a brake shoe assembly comprises a brake shoe, a cam roller and a retainer, wherein the cam roller is arranged on the retainer; the retainer is connected with the brake shoe through hole-shaft matching, and at least one hole matched with the hole-shaft is a long hole.

Further, the long hole is arranged on the retainer.

Further, the shaft matched with the hole shaft is a bolt.

Further, the shaft matched with the hole shaft is a screw, the two ends of the screw are both provided with threaded ends, or one end of the shaft matched with the hole shaft is a nut end, and the other end of the shaft matched with the hole shaft is provided with a screw with a threaded end.

The utility model has the advantages that: the retainer and the brake shoe are connected in a hole-shaft matching mode, and compared with the existing mode that the retainer is provided with the bulge, the retainer is not easy to fall off, so that the problem that the cam roller is easy to fall off can be solved; and the installation of the hole-shaft matching mode is simple, and the problem that the cam roller is difficult to install on the brake shoe can be solved.

Drawings

FIG. 1a is a front view of a cage of the prior art and embodiments;

FIG. 1b is a side view of a prior art and exemplary cage;

FIG. 2 is a schematic view of a prior art brake shoe assembly;

fig. 3a is a side view of a cage in an embodiment of the invention;

Fig. 3b is a front view of the cage in an embodiment of the present invention;

Fig. 4 is a schematic view of a brake shoe assembly according to an embodiment of the present invention.

Detailed Description

This embodiment provides a brake shoe subassembly, and the brake shoe is installed through the cooperation of hole axle on with the holder to make the holder be difficult to drop from the brake shoe, and improve the convenience that the holder installed on the brake shoe.

The brake shoe assembly provided by the present embodiment includes a cage 1, a cam roller 2, and a brake shoe 3. As shown in fig. 3a and 3b, the holder 1 has a structure in which a mounting hole 12 and a mounting position 11 are provided in the holder 1. The cam roller 2 is arranged at the mounting location 11, as in the prior art. The mounting holes 12 and the mounting holes of the brake shoe 3 are mounted by screws 4 as shown in fig. 4, so that the cam rollers 2 are mounted on the brake shoe 3 through the holder 1.

In another embodiment, the mounting holes 12 of the holder 1 and the mounting holes 31 of the brake shoe 3 may be mounted by bolts.

In another embodiment, the mounting hole 12 of the holder 1 may be a circular hole, the mounting hole of the brake shoe may be an elongated hole, or both of them may be elongated holes.

Claims

1. A brake shoe assembly comprises a brake shoe, a cam roller and a retainer, wherein the cam roller is arranged on the retainer; the brake shoe is characterized in that the retainer is connected with the brake shoe through a hole shaft in a matched mode, and at least one hole matched with the hole shaft is a long hole.

2. the brake shoe assembly of claim 1 wherein said elongated hole is disposed in the retainer.

3. The brake shoe assembly of claim 1 wherein the shaft to which the bore is shaft engaged is a latch.

4. The brake shoe assembly of claim 1 wherein the shaft engaged by the bore is a screw having a threaded end at each end or a screw having a threaded end at one end and a threaded end at the other end.