Sealing mechanism for high-pressure detection of TMC master cylinder

Abstract

The invention relates to a sealing mechanism for high-pressure detection of a TMC master cylinder. The sealing mechanism comprises a reference table board, a ventilation pull rod, a positioning sliding sleeve, a limiting sleeve, a sealing member and a ventilating pressure head. The positioning sliding sleeve, the limiting sleeve, and the sealing member sleeve the ventilating pressure head successively from bottom to top. The ventilating pressure head is fixedly arranged at the upper end of the ventilation pull rod. A positioning assembly for supporting the TMC master cylinder fixedly is arranged at the upper part of the reference table board; and the positioning sliding sleeve is fixedly installed at the lower end of the reference table board. A driving mechanism is connected to the lowerend of the ventilation pull rod. The ventilation pull rod moves up and down in the positioning sliding sleeve and the limiting sleeve under the effect of the driving mechanism. Compared with the priorart, the sealing mechanism has the following beneficial effects: sealing of the TMC master cylinder is realized from bottom to top and from the inside to outside and the complete sealing is guaranteed; and a problem that lots of pressures are need when the end surface of the master cylinder is pressed on the table board and the sealing is not firm in the prior art is solved.

Description

technical field [0001] The invention relates to a sealing mechanism, in particular to a sealing mechanism used for high-pressure detection of a TMC master cylinder. Background technique [0002] The TMC master cylinder is a casting. After the product is manufactured, high-pressure testing is required to detect whether the product is defective. During high-pressure testing, it is necessary to seal the master cylinder completely, and then inject high-pressure gas for testing. During the high-pressure detection of the TMC master cylinder, the detection pressure is as high as 200bar. The current sealing method is to directly press the end face of the master cylinder to the table for sealing. This sealing method requires a lot of pressure, and because the end face of the master cylinder has not been processed, it is not easy. The seal is complete, and air leakage is easy to occur, which brings great inconvenience to the testing process. [0003] Patent CN206431071U discloses a ...

AI Technical Summary

Problems solved by technology

This patent uses X-rays to detect castings, the cost of the device is relatively high, and it is not suitable for TMC master cylinders

Patent CN205909980U discloses an inspection device for helium inspection of ultra-high pressure casting casings, which is suitable for inspection of helium pressure in the inner cavity of metal casting casings, but cannot solve the good sealing problem of the TMC master cylinder of the present application

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