A high-pressure air-tightness testing fixture for a self-adjusting screw sleeve of a brake caliper

Abstract

The invention provides a brake caliper self-adjusting screw sleeve high pressure air tight detection clamp, which comprises a clamp base plate. The clamp base plate is provided with a bearing support and a lower sealing seat. The bearing support is provided with a vertical guide post and a horizontal guide post. The upper end of the vertical guide post and the back end of the horizontal guide post are equipped with a vertical cylinder mounting plate and a horizontal cylinder mounting plate to have a cylinder installed. The vertical guide post is also equipped with a moveable sliding plate with an upper sealing head. The horizontal guide post is also provided with a horizontally locking slide plate, a horizontally locking baffle plate, a spring positioning sleeve return spring and a limit lever. The horizontally locking slide plate and the horizontally locking baffle plate are provided with a clamp locking sleeve. The lower sealing seat is provided with a test component fixing sleeve. In the invention, a float locking mechanism is adopted to not only avoid the mechanism requiring the hydraulic pressure in the up-pressure process but also to make convenient clamping and save space. The combination of the test component fixing sleeve and material unloading cylinder realizes the function of easy clamping of the test component and convenient unloading of materials. In the testing process, high pressure gas replaces hydraulic pressure, which not only improves the experimental environment but also eliminates the cleaning of the test component after the test.

Description

technical field [0001] The invention relates to the technical field of testing jigs for auto parts, in particular to a high-pressure air-tightness testing jig for self-adjusting screw sleeves of brake calipers. Background technique [0002] Brake caliper self-adjusting nut is the main part of the integrated parking brake caliper, and its performance is related to personal safety. During the working process, the self-adjusting screw sleeve will push the piston to clamp the brake disc to play the role of driving brake and parking brake, and the hydraulic pressure it receives during the working process is 15MPa. The blocking block in the self-adjusting screw sleeve with plugging block assembly of the brake caliper is welded. It will fall off under high pressure or have poor sealing performance, which will cause brake failure and cause serious safety problems. Therefore, the self-adjusting screw sleeve is produced before leaving the factory. Manufacturers need to conduct reason...

AI Technical Summary

Problems solved by technology

The blocking block in the self-adjusting screw sleeve with plugging block assembly of the brake caliper is welded. It will fall off under high pressure or have poor sealing performance, which will cause brake failure and cause serious safety problems. Therefore, the self-adjusting screw sleeve is produced before leaving the factory. Manufacturers need to conduct reasonable testing to see if their airtightness and pressure resistance meet the technical requirements.

The existing airtight testing equipment is inconvenient for clamping and low testing efficiency, which is not conducive to mass production and high-quality testing

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