Releasing device for quick release valve in air expansion life-saving appliance

Abstract

The invention discloses a releasing device for a quick release valve in an air expansion life-saving appliance. The releasing device comprises a cable assembly, an elastic force base, a spring and a striker. A connection hole is arranged at the tail of the striker; the head of the cable assembly is plugged in the connection hole; a limiting through hole is arranged in the side wall of the connection hole; a steel ball is arranged in the limiting through hole; a limiting step is arranged in the middle of the striker; the spring is sleeved on the striker, and one end of the spring is ejected against the limiting step; a mounting hole is arranged in the elastic force base; the striker sleeved with the spring passes through the mounting hole; a spring mounting channel and a steel ball matching channel are mounted on the inner wall of the mounting hole; and the spring is arranged in the spring mounting channel. The releasing device provided by the invention has small influences on the viciousness of the using environment and the uncertainty of the using time, and has high stability in use. Meanwhile, an inclined through hole is arranged in the side wall of the striker, which is close to a needle head part, and the needle head is provided with an inclined face, so that gas can smoothly flow to a target to be inflated through the inclined through hole in the side wall of the striker in a condition that the striker does not move after breaking up a membrane of the releasing valve.

Description

technical field [0001] The invention relates to an inflatable life-saving facility assembly, in particular to a release device for a quick-release valve in the inflatable life-saving facility. Background technique [0002] At present, the safety release device of the quick-release valve in the existing inflatable life-saving facility system generally adopts an eccentric cam structure, and the eccentric cam is activated by a cable, so that the quick-release valve striker is displaced, and the working diaphragm of the steel cylinder is further broken. The starting force of the quick release valve is related to the rotation of the eccentric cam, the displacement of the firing pin, the breaking of the working diaphragm and the internal pressure of the steel cylinder, so the starting force is very uneven, ranging from 200-300N to 800-1000N. Under the extreme conditions of low temperature, it may sometimes be greater than 1500N, while the ISO15738 standard stipulates that within t...

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Problems solved by technology

[0004] However, as a quick-release device in a life-saving facility, the harshness of its use environment and the uncertainty of its use time will largely affect the physical and chemical properties of its own materials.

Therefore, in the above-mentioned patent documents, the release plug is embedded in one end of the release rod in the non-working state, and the release plug is pulled out in the working state, and the release plug connection end of the release rod is deformed and separated from the fixed end of the release rod, and its operation is stable. Poor performance, easy to affect its performance; at the same time, when the striker breaks the diaphragm and no longer moves, if only a through hole is set at the needle tip of the striker, it will affect the speed of gas flow

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