On-line high-pressure tightness testing method for brake caliper

A high-pressure sealing and testing method technology, which is applied in the direction of liquid tightness measurement using liquid/vacuum degree, and by measuring the increase and deceleration rate of the fluid, can solve the problems of difficult to realize online detection of brake calipers and low detection efficiency rate, etc. Achieve the effects of ensuring reliability, realizing online detection, and improving detection efficiency

Active Publication Date: 2010-10-27
SHANGHAI AUTOMOTIVE BRAKE SYST
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AI Technical Summary

Problems solved by technology

Since the high-pressure sealing of the brake caliper is currently tested by hydraulic pressure on the brake caliper, the brake caliper after the test must be cleaned, resulting in a low detection efficiency rate, which is only suitable for random inspection, and it is difficult to achieve manufacturing. On-line detection of moving pliers

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  • On-line high-pressure tightness testing method for brake caliper
  • On-line high-pressure tightness testing method for brake caliper

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Embodiment Construction

[0012] The brake caliper online high-pressure sealing test method of the present invention can be combined with figure 1 Further explanation is as follows:

[0013] Firstly, the caliper body 1 of the brake caliper is connected with the compressed air source by the pipeline 3 , and a valve 4 is set on the pipeline 3 . In one embodiment of the present invention, the gas source includes a first gas source 21 and a second gas source 22 . In order to facilitate the switch connection between the first air source 21 and the second air source 21 for the caliper body 1 , a first switching valve 51 is further provided between the valve 4 and the air source. In addition, a second switching valve 52 for discharging compressed air is also provided on the pipeline 3 .

[0014] Then, a brake disc simulation test piece 6 is placed between the piston cylinder body 11 of the caliper body 1 and the outer friction plate seat 12 . The brake disc simulation test piece 6 is connected to a push pl...

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Abstract

The invention relates to an on-line high-pressure tightness testing method for a brake caliper. The method comprises the following steps of: connecting the brake caliper with an air source by using a pipeline and arranging a valve on the pipeline; arranging a brake disc simulation specimen; opening the valve, pouring compressed air with a first air pressure value into a caliper body and then continuously closing the valve for a first preset time; if an air pressure value in the caliper body is always kept to be the first air pressure value in the first preset time, opening the valve, pouring compressed air with a second air pressure value into the caliper body after the air pressure in the caliper is unloaded to be an unloading air pressure value and then continuously closing the valve for a second preset time, wherein the unloading air pressure value is smaller than the second air pressure value; and checking the air pressure value in the caliper body, comparing a difference value between the air pressure value and the second air pressure value with a set air pressure range value and judging the tightness of the brake caliper. In the on-line high-pressure tightness testing methodof the invention, the brake caliper is detected by replacing the hydraulic pressure with the air pressure, so that the problem of pollution to workpieces due to adoption of the hydraulic pressure is solved and detection efficiency is improved.

Description

technical field [0001] The invention relates to a method for detecting the tightness of a caliper body of a floating brake caliper. Background technique [0002] High-pressure sealing is one of the most important performances of the floating brake caliper. When the hydraulic pressure acts on the brake caliper to brake the moving car, it is mainly reflected in: the ability of the caliper body to withstand the hydraulic pressure; And the hydraulic sealing system of the brake caliper has the ability to seal high hydraulic pressure. Since the high-pressure sealing of the brake caliper is currently tested by hydraulic pressure on the brake caliper, the brake caliper after the test must be cleaned, resulting in a low detection efficiency rate, which is only suitable for random inspection, and it is difficult to achieve manufacturing. On-line detection of moving pliers. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M3/26
Inventor 周加荣张炯邵瑛
Owner SHANGHAI AUTOMOTIVE BRAKE SYST
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