CN112013059A

CN112013059A - Drum brake with abrasion alarming function

Info

Publication number: CN112013059A
Application number: CN201910466097.8A
Authority: CN
Inventors: 袁加林
Original assignee: Gaoyou Hongsheng Brake Factory
Current assignee: Gaoyou Hongsheng Brake Factory
Priority date: 2019-05-31
Filing date: 2019-05-31
Publication date: 2020-12-01

Abstract

The invention discloses a drum brake with an abrasion alarm function, which belongs to the technical field of drum brakes, wherein brake shoes are symmetrically arranged on the left side and the right side of the front side wall of a fixed plate, brake pads are fixedly connected to the outer walls of the brake shoes, a brake pump is fixedly connected between the two groups of brake shoes, a return spring is fixedly connected between the two groups of brake shoes, brake friction lugs are uniformly distributed on the outer wall of each brake pad, a first groove is formed in the outer wall of each brake pad, a rivet is nested in the first groove and fixedly connected with each brake shoe after penetrating through the first groove, a distance sensor is fixedly connected to one side, far away from an opening, in the second groove, a single chip microcomputer is fixedly arranged at the top of the front side of the fixed plate, the distance sensor is electrically output and connected with a reference module, and can detect the thickness of each brake pad, when the distance to be detected is not more than the preset value, an alarm can be given, and the replacement is convenient to carry out in time.

Description

Drum brake with abrasion alarming function

Technical Field

The invention relates to the technical field of drum brakes, in particular to a drum brake with an abrasion alarming function.

Background

The drum brake utilizes friction between a friction plate and a brake drum to realize speed reduction and parking, but the thickness of the friction plate can be reduced along with the use time, and the friction plate needs to be replaced when reaching a limit.

Disclosure of Invention

The invention aims to provide a drum brake with a wear warning function, so as to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a drum brake with an abrasion alarming function comprises a fixing plate, wherein a brake drum is arranged on the outer side of the front side wall of the fixing plate, brake shoes are symmetrically arranged on the left side and the right side of the front side wall of the fixing plate, brake plates are fixedly connected to the outer walls of the brake shoes, a brake pump is fixedly connected between the two groups of brake shoes, a reset spring is fixedly connected between the two groups of brake shoes, brake friction convex blocks are uniformly distributed on the outer walls of the brake plates, first grooves are formed in the outer walls of the brake plates, rivets are embedded in the first grooves and fixedly connected with the brake shoes after penetrating through the first grooves, warning blocks are assembled in the first grooves, second grooves are formed in the left side and the right side of the outer walls of the brake plates, one side, far away from an opening, of each second groove is fixedly connected with a distance sensor, and a single chip microcomputer is fixedly arranged at the top of the front side of, the distance sensor is electrically connected with the reference module in an output mode, the reference module is electrically connected with the single chip microcomputer in an output mode, and the single chip microcomputer is electrically connected with the wireless transmission module in an output mode.

Preferably, the brake friction lugs are uniformly arranged along the length direction of the surface wall of the brake pad, and the brake friction lugs are trapezoidal lugs.

Preferably, the inner cavity of the brake shoe is provided with pre-tightening grooves matched with the rivets, and the pre-tightening grooves are uniformly formed along the arc direction of the brake shoe.

Preferably, the distance sensors are electrically connected with the single chip microcomputer through electric wires, and assembling through holes communicated with the second grooves are formed in the inner walls of the two groups of brake shoes.

Preferably, the depth of the first groove is smaller than that of the second groove, and the distance from the distance sensor to the opening of the second groove is larger than the distance from the warning block to the opening of the first groove.

Preferably, the side wall of the first groove is provided with an assembly clamping groove matched with the warning block, and the warning block is fixedly nested in the assembly clamping groove.

Compared with the prior art, the invention has the beneficial effects that: the brake pad has reasonable structural design, the brake friction lugs are uniformly and fixedly arranged on the outer wall of the brake pad, the friction force between the brake drum and the brake pad can be increased, the brake capability is convenient to improve, meanwhile, the depths of the first groove and the second groove are reduced along with the abrasion of the brake pad, the warning block can firstly rub against the brake drum and can make a harsh sound, so that the warning effect is achieved, the protection effect is achieved, the excessive abrasion of the brake pad is prevented, meanwhile, the distance sensor can detect the distance between the distance sensor and the brake drum in real time, the thickness of the brake pad can be detected, when the distance to be detected is not more than a preset value, an alarm can be given, and the brake pad can be replaced in time.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a working principle diagram of the present invention.

In the figure: the brake comprises a fixing plate 1, a brake drum 2, a brake shoe 3, a brake pad 4, a brake pump 5, a return spring 6, a brake friction bump 7, a first groove 8, a rivet 9, a warning block 10, a second groove 11, a distance sensor 12, a singlechip 13, a reference module 14 and a wireless transmission module 15.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides a technical solution: a drum brake with abrasion alarming function comprises a fixing plate 1, a brake drum 2 is arranged on the outer side of the front side wall of the fixing plate 1, brake shoes 3 are symmetrically arranged on the left side and the right side of the front side wall of the fixing plate 1, brake plates 4 are fixedly connected to the outer walls of the brake shoes 3, brake pumps 5 are fixedly connected between the two groups of brake shoes 3, return springs 6 are fixedly connected between the two groups of brake shoes 3, brake friction lugs 7 are uniformly distributed on the outer walls of the brake plates 4, first grooves 8 are formed in the outer walls of the brake plates 4, rivets 9 are nested in the first grooves 8, the rivets 9 penetrate through the first grooves 8 and are fixedly connected with the brake shoes 3, warning blocks 10 are assembled in the first grooves 8, second grooves 11 are formed in the left side and the right side of the outer walls of the brake plates 4, distance sensors 12 are fixedly connected to one side, far away from an opening, single chip microcomputers 13 are fixedly arranged at the tops of, the distance sensor 12 is electrically connected with the reference module 14, the reference module 14 is electrically connected with the single chip microcomputer 13, and the single chip microcomputer 13 is electrically connected with the wireless transmission module 15.

The brake friction lugs 7 are uniformly arranged along the length direction of the surface wall of the brake pad 4, and the brake friction lugs 7 are trapezoidal lugs, so that the friction force between the brake drum 2 and the brake pad 4 can be increased, and the braking capacity can be improved conveniently;

the inner cavity of the brake shoe 3 is provided with pre-tightening grooves matched with the rivets 9, and the pre-tightening grooves are uniformly formed along the arc direction of the brake shoe 3, so that the connection tightness between the brake shoe 3 and the brake pad 4 can be improved;

the distance sensors 12 are electrically connected with the single chip microcomputer 13 through electric wires, assembling through holes communicated with the second grooves 11 are formed in the inner walls of the two groups of brake shoes 3, and data transmission is facilitated after the distance sensors 12 detect data;

the depth of the first groove 8 is smaller than that of the second groove 11, and the distance from the distance sensor 12 to the opening of the second groove 11 is larger than the distance from the warning block 10 to the opening of the first groove 8, so that the warning effect can be achieved by the arrangement that the warning block 10 firstly rubs with the brake drum 2, and the distance sensor 12 can be protected;

set up on the lateral wall of first recess 8 with warning piece 10 matched with assembly slot, and warning piece 10 is fixed nestification in assembly slot, can improve warning piece 10 and first recess 8's assembly fastening degree through this kind of setting.

Example (b): when the device is used, the brake pump 5 can drive the brake pad 4 on the outer wall of the brake shoe 3 to contact with the brake drum 2, so that the braking effect is realized, then the brake pump 5 retracts, the reset spring 6 resets to drive the brake shoe 3 to reset, and the brake friction convex blocks 7 are uniformly and fixedly arranged on the outer wall of the brake pad 4, so that the friction force between the brake drum 2 and the brake pad 4 can be increased, the braking capability is convenient to improve, meanwhile, along with the abrasion of the brake pad 4, the depths of the first groove 8 and the second groove 11 are reduced, when the warning block 10 in the first groove 8 and the brake drum 2 rub, a harsh sound can be given out to achieve the warning effect, meanwhile, the device can play a role of protecting the distance sensor 12 to prevent the brake pad 4 from being excessively abraded, meanwhile, the distance sensor 12 can detect the distance between the distance sensor 12 and the brake drum 2 in real time, thereby can detect the thickness of brake block 4, and give benchmark module 14 with detected information transmission, benchmark module 14 can compare detected value and predetermined value, when the detected value is not more than the predetermined value, gives singlechip 13 alarm information, thereby singlechip 13 gives main control unit through 15 transmission of wireless transmission module and reports to the police, is convenient for in time change.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A drum brake with wear warning function, includes fixed plate (1), its characterized in that: the brake drum (2) is arranged on the outer side of the front side wall of the fixing plate (1), brake shoes (3) are symmetrically arranged on the left side and the right side of the front side wall of the fixing plate (1), brake blocks (4) are fixedly connected to the outer wall of each brake shoe (3), a brake pump (5) is fixedly connected between the brake shoes (3), and the brake shoes (3) are fixedly connected with a reset spring (6), brake friction convex blocks (7) are uniformly distributed on the outer wall of each brake block (4), first grooves (8) are formed in the outer wall of each brake block (4), rivets (9) are nested in the first grooves (8), the rivets (9) penetrate through the first grooves (8) and are fixedly connected with the brake shoes (3), warning blocks (10) are arranged in the first grooves (8), second grooves (11) are formed in the left side and the right side of the outer wall of each brake block (4), keep away from open-ended one side fixedly connected with distance sensor (12) in second recess (11), the fixed singlechip (13) that is provided with in front side top of fixed plate (1), distance sensor (12) electrical output connects reference module (14), reference module (14) electrical output connects singlechip (13), singlechip (13) electrical output connects wireless transmission module (15).

2. A drum brake with a wear warning function according to claim 1, characterized in that: the brake friction lugs (7) are uniformly arranged along the length direction of the surface wall of the brake pad (4), and the brake friction lugs (7) are trapezoidal lugs.

3. A drum brake with a wear warning function according to claim 1, characterized in that: the inner cavity of the brake shoe (3) is provided with pre-tightening grooves matched with the rivets (9), and the pre-tightening grooves are uniformly formed along the arc direction of the brake shoe (3).

4. A drum brake with a wear warning function according to claim 1, characterized in that: the distance sensors (12) are electrically connected with the single chip microcomputer (13) through electric wires, and the inner walls of the two groups of brake shoes (3) are provided with assembling through holes communicated with the second grooves (11).

5. A drum brake with a wear warning function according to claim 1, characterized in that: the depth of the first groove (8) is smaller than that of the second groove (11), and the distance from the distance sensor (12) to the opening of the second groove (11) is larger than the distance from the warning block (10) to the opening of the first groove (8).

6. A drum brake with a wear warning function according to claim 1, characterized in that: the side wall of the first groove (8) is provided with an assembly clamping groove matched with the warning block (10), and the warning block (10) is fixedly nested in the assembly clamping groove.