An overload self-locking device for gas spring

Abstract

The invention discloses an overload self-locking device for a gas spring. The device comprises an air cylinder, one end of the air cylinder is provided with a base, the position, on one side of the air cylinder, of the base is provided with a control box, an SCR electro-thermal controller and a pressure calculator are installed inside the control box, the SCR electro-thermal controller is locatedon one side of the pressure calculator, an inner cavity and an installation groove are formed in the air cylinder, the inner cavity is located on one side of the installation groove, and a self-locking ring, a valve base, a first piston and a second piston are sequentially installed inside the inner cavity from one end to the other end. The self-locking ring, a thermal expansion ring, a heating ring, wedge-shaped rubber and a gas volume sensor are arranged, when the initial value of the gas spring is adjusted, the gas volume sensor on the outer wall of one side of the first piston detects thegas volume contained inside a second air cavity, and the pressure calculator inside the control box calculates the largest loading capacity capable of being borne by gas according to the initial volume of gas.

Description

technical field [0001] The invention belongs to the technical field of gas springs, and in particular relates to an overload self-locking device for gas springs. Background technique [0002] The gas spring is filled with compressed gas in a sealed container, and uses the compressibility of the gas to realize its spring action. The stiffness of this spring is variable, because when the load acting on the spring increases, the quantitative quantity in the container As the air pressure increases, the stiffness of the spring increases; conversely, when the load decreases, the air pressure in the spring decreases and the stiffness decreases. [0003] However, the existing gas springs have a certain load limit during use. According to the difference in the internal gas volume, the load limit is also different. If the gas spring is overloaded for a long time, it will easily cause damage and affect the service life of the spring. In addition, the existing gas spring easily causes ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an overload self-locking device for gas springs, so as to solve the problems that the existing overloaded use is easy to cause damage to the gas spring, insufficient sealing when changing the internal compressed gas, and easy to cause piston wear

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