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Adjustable spring braking air chamber

A spring brake air chamber, adjustable technology, applied in the direction of the brake, brake transmission device, reservoir layout, etc., can solve the problems that the brake deviation cannot be eliminated, the brake shoe pressure adjustment part is not designed, etc.

Inactive Publication Date: 2011-04-13
施霞
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no brake shoe pressure adjustment part in the existing automobile air pressure braking system, only the gap adjustment mechanism that adjusts the gap between the brake and the brake drum
However, the adjustment of the left and right brake gaps alone cannot eliminate the phenomenon of brake deviation.

Method used

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  • Adjustable spring braking air chamber
  • Adjustable spring braking air chamber
  • Adjustable spring braking air chamber

Examples

Experimental program
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Embodiment Construction

[0014] The accompanying drawings have shown the structure of the present invention and its embodiments, and the relevant details and working principles of the embodiments will be further described below in conjunction with the accompanying drawings.

[0015] The present invention divides the return spring in the ordinary spring air chamber into two springs, front and rear, as figure 2 Shown front end is adjustment spring 8, and its one end withstands on the air chamber front shell 14, and the other end withstands the front of the base 7 of moving sliding sleeve 13. The rear end is a return spring 6, one end of which is pushed against the push rod base 3, and the other end is pushed against the back of the base 7 of the moving sliding sleeve 13. The elastic force of the adjustment spring 8 is greater than the elastic force of the return spring 6 . The moving sliding sleeve 13 is sleeved on the air chamber mandrel 12 and can move forward and backward. The front end of the mov...

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Abstract

The invention discloses an adjustable spring braking air chamber for a vehicular brake system. One end of an adjustable spring (8) of the air chamber abuts on an air chamber front shell (14) and the other end abuts on the front of a base (7) of a mobile sliding bush (13), one end of a return spring (6) abuts on a base (3) of an air chamber mandrel (12) and the other end abuts on the back of the base (7) of the mobile sliding bush (13) which is sleeved on the air chamber mandrel (12) and can move back and forth, the front end of the mobile sliding bush (13) is provided with external threads and extends out of the air chamber front shell (14), an adjustable nut (9) is mounted on the external threads at the front end of the mobile sliding bush (13) and abuts on the air chamber front shell (14); when the adjustable nut (9) is rotated, the mobile sliding bush (13) accordingly moves back and forth, the pretightening force of the adjustable spring (8) and the return spring (6) accordingly changes; during braking, pushing force output by the air chamber mandrel (12) accordingly changes, and pressure applied on a brake shoe of the brake simultaneously changes along with the output force of the air chamber mandrel (12). Accordingly, the invention can realize the adjustment of the brake force of wheels so as to effectively prevent a brake off-tracking phenomenon.

Description

technical field [0001] The invention relates to an automobile brake device, in particular to a spring brake air chamber. Background technique [0002] At present, most domestic light trucks have different degrees of braking deviation, especially slow braking deviation is more obvious, and it is difficult to deal with. This is an unsolved problem that has plagued the automotive industry for many years, and it is also a dangerous working condition that seriously affects the driving safety of the entire vehicle. Theoretically, braking deviation can be divided into rear wheel braking drift and front wheel braking deviation. The rear wheel brake drift can be solved by adding a load-sensing proportional valve (not discussed here). There are two reasons for the front wheel brake deviation: one is caused by the motion interference of the steering system and the suspension system, which can be solved by reducing the amount of interference between the two (not discussed here); the o...

Claims

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Application Information

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IPC IPC(8): B60T17/06B60T13/24
Inventor 施霞
Owner 施霞
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