Submerged air leakage test device for bicycle front fork casts

Abstract

The invention discloses a submerged air leakage test device for bicycle front fork casts. The test device comprises a base and a frame body fixed above the base. A plurality of location blocks used for fixing the casts to be tested are arranged in the middle on the base, a press holding cylinder is fixedly arranged under the position of the frame corresponding to the location blocks, and the lower portion of the press holding cylinder is in driving connection with a press holding block used for abutting against the casts to be tested in the vertical direction. A group of sealing cylinders are fixedly arranged on the frame body at one end of the base, and each sealing cylinder is in driving connection with an adaptation connector used for transversely pushing the casts to be tested towards the location blocks. A group of sealing cushion blocks are fixedly arranged on the frame body at the other end of the base corresponding to the sealing cylinders, and each sealing cushion block is provided with a ventilation pipeline communicated with an air inlet on the frame. The submerged air leakage test device resolves the problem of unstable factors in production, accurately judges whether the front fork casts have air leakage or not, simultaneously determines the specific air leakage position and provides accordance for statistics analysis of poor phenomena.

Description

[0001] technical field [0002] The invention relates to a fixture for air leakage testing, in particular to a device for submerged air leakage testing of bicycle front fork castings. Background technique [0003] With the development of technology, the demand and requirements for lightweight bicycles are getting higher and higher. Magnesium alloy front fork castings are widely used in high-end bicycles. Due to its hydraulic shock absorption function requirements, magnesium alloy front fork castings must have The property of not leaking under a certain pressure. [0004] In the existing leak test process, the differential pressure dry leak test method is used for leak test. During the leak test, the pressure monitoring function of the equipment is used to determine whether the casting is leaking. But the shortcomings are: 1. When the gas circuit of the leak detection device leaks or leaks due to poor sealing, the equipment will not give an early warning, and it will be misj...

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the above defects, the present invention provides a water-immersed air leakage testing device for bicycle front fork castings, which can solve unstable factors in production, more accurately determine whether the front fork castings are leaking, and at the same time determine the specifics of the castings. Leakage parts, to provide a basis for statistical analysis of adverse phenomena

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