Air tightness detection clamp

Abstract

The invention relates to an air tightness detection clamp. The air tightness detection clamp comprises a lining cone shaft main body, a compressing cone sleeve and a joining nut. The compressing cone sleeve sleeves the lining cone shaft main body. A cone-shaped hole of the compressing cone sleeve is matched with an outer cone surface of the lining cone shaft main body. The joining nut is installed on the lining cone shaft main body by means of threaded connection and tightly presses the compressing cone sleeve to the outer cone surface of the lining cone shaft main body. The air tightness detection clamp has the advantages that the compressing cone sleeve is driven by the rotation of a large-pitch thread of the joining nut, and surface sealing between an underwater work clothes neckline and the outer cone surface of the lining cone shaft main body is formed, so that the underwater work clothes neckline is reliably sealed and locked, the safety is high, and air leakage is prevented.

Description

technical field [0001] The invention belongs to the technical field of mechanical tooling fixtures, in particular to an airtightness testing fixture, in particular to a fixture for underwater airtightness testing of underwater work clothes. Background technique [0002] The air tightness test of underwater work clothing is usually to seal the neckline of the underwater work clothing, then put the whole clothing into the water, and use the lead-out tube at the neckline to inject compressed air to realize the test. The air inlet and outlet pipes at the neckline of the existing underwater work clothing generally use an inward-expanding wooden air-tightness test fixture. The structure is a cylinder, and there is an annular groove in the middle of the outer diameter in the axial direction. Enter the neckline of the underwater work clothing, use the outer diameter of the cylinder to compress the neckline of the underwater work clothing and expand it to the outside, and then use a ...

AI Technical Summary

Problems solved by technology

[0003] 1. The bundled rope is often not tightly pressed between the neckline and the clamp, resulting in air leakage, which in turn affects the judgment of the airtightness of the underwater work clothing and reduces the product quality

[0004] 2. Because high-pressure gas needs to be filled inside the underwater work clothing, when the friction between the clamp and the underwater work clothing is insufficient, the clamp is easy to fall off or collapse, which may damage the product in the slightest, or injure the person in the worst case. Security risks

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