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Automatic return brake

An automatic return and brake technology, which is applied to drum brakes, brake types, brake actuators, etc., can solve problems such as brake deviation, heat generation, and difficulty in returning brake shoes, and achieve the effect of ensuring accurate return

Active Publication Date: 2012-12-19
WEIFANG AIRUI BRAKING SYST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the car brakes, the two brake shoes swing clockwise around the hinge as a whole. After the brake is reset, the two should return to their original positions counterclockwise around the hinge under the friction of the brake drum. However, in the drum brake The bottom plate is prone to deformation under long-term use. After the deformation of the bottom plate, it is easy to cause difficulty in returning the brake shoe after braking, causing the brake pads to rub against the brake drum all the time, resulting in heat generation and brake deviation.

Method used

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  • Automatic return brake
  • Automatic return brake

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Embodiment 1: as attached figure 1 , attached figure 2 And attached image 3 As shown, the automatic return brake includes a bottom plate 1, two brake shoes are arranged on the bottom plate 1, a brake pump 5 and an adjuster for adjusting the brake clearance are arranged between the two brake shoes, and the brake pump 5 is For the hydraulic pump, the base plate 1 is provided with a reset device connected with the regulator.

[0021] Reset device comprises positioning pin 25, limit pin 24, slide plate 26 and traction spring 23, and slide plate 26 is provided with elongated through hole 27, and slide plate 26 is sleeved on the positioning pin 25 by through hole 27, and one end of slide plate 26 and The regulator is connected, the other end of the slide plate 26 is connected with the traction spring 23, the other end of the traction spring 23 is connected with the base plate 1, and the limit pin 24 is located at the side of the slide plate 26 near the center of the base...

Embodiment 2

[0030] Embodiment 2: as attached Figure 4 As shown, in this embodiment, the adjuster is a manual adjuster, and the brake gap between the brake shoe and the brake drum is manually adjusted.

[0031] The automatic return brake includes a bottom plate 1, two brake shoes are arranged on the bottom plate 1, a brake pump 5 and a regulator for adjusting the brake clearance are arranged between the two brake shoes, the brake pump 5 is a hydraulic pump, The bottom plate 1 is provided with a reset device connected with the regulator, the two brake shoes are the leading brake shoe 3 and the slave brake shoe 11, and a return spring is arranged between the upper ends of the leading brake shoe 3 and the slave brake shoe 11 4. A return spring 31 is provided between the leading brake shoe 3 and the lower end of the slave brake shoe 11. Other structures in this embodiment are the same as those in Embodiment 1.

[0032] During braking, the collar brake shoe 3 and the slave brake shoe 11 drive...

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Abstract

The invention relates to an automatic return brake. The brake comprises a bottom plate, wherein the bottom plate is provided with two brake shoes between which a brake pump and an adjuster for adjusting a brake gap are arranged; the bottom plate is provided with a resetting device connected with the adjuster; the resetting device comprises a positioning pin, a limiting pin, a sliding plate and a draft spring; the sliding plate is provided with a long strip through hole and is sleeved on the positioning pin through the through hole; one end of the sliding plate is connected with the adjuster, and the other end of the sliding plate is connected with the draft spring; the other end of the draft spring is connected with the bottom plate; and the limiting pin is positioned on the side of the sliding plate close to the center of the bottom plate. The brake shoes drive the brake and the sliding plate to swing clockwise during brake, and cannot be automatically reset during brake resetting, the sliding plate drives the adjuster to swing anticlockwise to push the brake shoes back to original positions under the action of tension of the draft spring, and does not act any more and ensures that the brake shoes are positioned at the central position of the brake under the action of the limiting pin, so that the phenomena of heat emission and brake deflection are avoided.

Description

technical field [0001] The invention relates to a brake, in particular to an automatic return brake. Background technique [0002] Drum brake is a kind of braking device for braking the rotating motion. The drum brake generally includes a bottom plate, on which two brake shoes are arranged, and friction plates are respectively arranged on the two brake shoes. One end of the brake shoe is hinged, a brake pump is arranged between the two brake shoes, and a return spring is arranged between the two brake shoes. Reset of the brake shoe. When the car brakes, the two brake shoes swing clockwise around the hinge as a whole. After the brake is reset, the two should return to their original positions counterclockwise around the hinge under the friction of the brake drum. However, in the drum brake The bottom plate is prone to deformation under long-term use. After the deformation of the bottom plate, it is easy to cause difficulty in returning the brake shoe after braking, causing...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16D51/18F16D65/16F16D65/42
Inventor 周元学孟令国白彬业聂玉敏
Owner WEIFANG AIRUI BRAKING SYST CO LTD