Braking main cylinder vacuum sealing test bench
A brake master cylinder and vacuum sealing technology, which is applied in the direction of using liquid/vacuum degree for liquid tightness measurement and measuring the acceleration and deceleration rate of fluid, etc., can solve the problems of complex structure, difficult design, difficult sealing, etc.
Inactive Publication Date: 2009-04-29
郭琅琅
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Problems solved by technology
Through practice, we realized that there are many disadvantages in the traditional test method: 1. The whole test equipment has complex structure, difficult design and high cost; 2. The adjustment of the equipment is troublesome and the sealing is difficult; Sealing measures are required, so many sealing cylinders are distributed around the workpiece, which makes it very inconvenient to load and unload the workpiece; 4. Since compressed air needs to be input into the inner cavity, some water and oil will inevitably be brought in, which will easily bring quality to the product Hidden danger
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[0010] As shown in Figures 1 and 2, this embodiment includes a stand 1, a brake master cylinder oil inlet sealing device (2, 3), a brake master cylinder tail compression device (5, 6), a brake master cylinder Flexibility test device (16, 17), wherein, brake master cylinder oil inlet hole sealing device (2, 3) is made up of cylinder 2, seal head 3, is provided with air passage on seal head 3, the flexibility of brake master cylinder The test device (16, 17) is composed of a digital cylinder 17 and a moving push rod 16. The moving push rod 16 is pushed against the head of the first piston of the brake master cylinder, and a seal is arranged on the periphery of the first stage sealing device 13 of the brake master cylinder. Chamber 14, sealed chamber 14 includes housing 15, sealing ring 18, 12, housing is provided with an inner chamber, one end of the inner chamber is sleeved on the moving push rod 16, and the sealing ring 18 is arranged between the moving push rod 16 and the inne...
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The present invention relates to an automobile accessory detecting device, especially to a braking main cylinder vacuum sealing test-bed. The characteristics reside in the a seal chamber which is connected to a vacuum generator is positioned in the periphery of the first level seal device of the braking main cylinder, and the air channel on the seal head is also connected to the corresponding vacuum generator. The aim is to design a braking main cylinder vacuum sealing test-bed having a convenient test process and a simple structure. The device has the characteristics of a low cost, a reliable seal, a convenient assemble and disassemble process comparing to the prior art.
Description
technical field [0001] The invention relates to auto parts testing equipment, in particular to a brake master cylinder vacuum sealing test bench. Background technique [0002] Brake master cylinder is a key component of auto parts, which consists of master cylinder body, double piston, and four-stage sealing device. Judging whether a brake master cylinder is qualified is mainly to detect whether the sealing performance of the four-stage sealing device meets the requirements. The traditional detection method adopts the pressure seal test method, and its corresponding pressure seal test bench includes a bench, a brake master cylinder oil inlet hole sealing device, a brake master cylinder tail compression device, and a brake master cylinder flexibility test device, among which The sealing device of the oil inlet hole of the brake master cylinder is composed of a cylinder and a sealing head, and an air passage is provided on the sealing head. The flexibility test device of the ...
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IPC IPC(8): G01M3/02G01M3/26
Inventor 郭大清郭琅琅
Owner 郭琅琅