Self-unloading protective gas spring
A protective gas spring technology, applied in the direction of springs, springs/shock absorbers, shock absorbers, etc., can solve problems such as the gap between the sealing ring and the piston, and achieve good sealing and easy operation
Active Publication Date: 2017-08-08
CHANGZHOU GAS SPRING
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Problems solved by technology
[0003] The technical problem to be solved by the present invention is: in order to solve the problem of the gap between the sealing ring and the piston due to the long-term friction between the piston rod and the sealing ring, a self-unloading protective gas spring is now provided
Method used
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Embodiment 1
[0013] Such as figure 1 and 2 As shown, a self-unloading protective gas spring includes a cylinder 1 and a piston 2 arranged in the cylinder 1, the piston 2 is fixedly connected with a piston rod 3, and the piston 2 divides the cylinder 1 into There is a rod cavity 4 and a rodless cavity 4-1, and a bushing 5 is fixedly connected between the cylinder body 1 and the piston rod 3 in the cylinder body 1, and the bushing 5 is connected to the cylinder body 1 A groove 6 is provided on the contact surface, the groove 6 communicates with the rod cavity 4, a steel ball 7 is provided in the groove 6, and a groove 6 is provided on the contact surface between the cylinder body 1 and the bush 5 A through hole 8, the diameter of the through hole 8 is smaller than the diameter of the steel ball 7, the steel ball 7 is in line contact with the through hole 8, a spring 9 is arranged between the groove 6 and the steel ball 7, the The through hole 8 communicates with the rodless chamber 4-1.
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The invention relates to the technical field of gas springs and particularly relates to a self-detached protection type gas spring. The self-detached protection type gas spring comprises a cylinder body and a piston, wherein the piston is arranged in the cylinder body; a piston rod is fixedly connected to the piston; the cylinder body is divided with a rod cavity and a rodless cavity by the piston; a bush is fixedly connected between the cylinder body and the piston rod in the cylinder body; a groove is formed in the contact surface between the bush and the cylinder body and is communicated with the rod cavity, and a steel ball is arranged in the groove; a through hole is formed in the contact surface between the cylinder body and the bush, the diameter of the through hole is smaller than that of the steel ball, and the steel ball is in line contact with the through hole; and a spring is arranged between the groove and the steel ball, and the through hole is communicated with the rodless cavity. The self-detached protection type gas spring has good safety and is capable of rapidly realizing decompression, buffering and deceleration when the piston rod rushes out, so that the good tightness of the gas spring is guaranteed; and the operation is convenient.
Description
technical field [0001] The invention relates to the technical field of gas springs, in particular to a self-unloading protective gas spring. Background technique [0002] Now there are certain safety hazards in the use of nitrogen gas springs, because the cylinder of nitrogen gas springs is filled with high-pressure nitrogen gas, due to the long-term friction between the piston rod and the sealing ring, there is a gap between the sealing ring and the piston, so that the gas spring has The high-pressure nitrogen in the rod cavity is lost. Because the upper orifice of the piston is relatively small, the pressure loss in the rodless cavity is relatively slow. The pressure in the rodless cavity is still high, and the piston rod rushes out of the cylinder, causing damage to the nearby gas spring equipment or personnel causing personal injury. Contents of the invention [0003] The technical problem to be solved by the present invention is: in order to solve the problem of the ...
Claims
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IPC IPC(8): F16F9/36F16F9/34
CPCF16F9/34F16F9/362
Inventor 余卫忠施萍华杨峰岳如霞
Owner CHANGZHOU GAS SPRING