A double-barrel multi-chamber spring with an adjustable stroke

Abstract

A double-barrel multi-chamber spring with an adjustable stroke comprises an outer tube and an inner tube. A chamber is formed between the inner wall of the outer tube and the outer wall of the inner tube. A first floating piston is arranged in the cavity for dividing the chamber into a first oil chamber and a first air chamber. A small separation piston is arranged between the outer wall of the hollow piston rod and the inner wall of the inner tube. The inner wall of the inner tube is divided into a second oil chamber, a third oil chamber and a second air chamber orderly by a floating control valve and the small separation piston. A fixed control valve is arranged in a back block for conducting or blocking the first oil chamber and the second oil chamber through an oil passage. The fixed control valve is controlled by an operation actuating lever extending out from the back block. The floating control valve can conduct the second oil chamber and the third oil chamber through the oil passage. The double-barrel multi-chamber spring with an adjustable stroke of the invention has the following beneficial effects that the operation of the gas spring of the invention can be controlled by the fixed control valve at the tail end of the spring, so that it only needs to open the control valve when the spring needs to stretch, and the spring has controllable operation and can stop at any position.

Description

technical field [0001] The invention relates to an air spring, in particular to an adjustable stroke double-tube multi-chamber air spring. Background technique [0002] A gas spring is an accessory that can perform functions such as support, buffer, brake, height adjustment, and angle adjustment. At present, this product has been widely used in medical equipment, automobile, furniture, textile equipment, processing industry and other fields. Commonly used gas springs are composed of pressure tubes, pistons, piston rods, seals and connectors, etc. After the manufacture is completed, the stroke is fixed, so this kind of gas spring can only stop at the maximum and minimum of the gas spring stroke. position, and its itinerary cannot be changed during use. The scope of use of the gas spring is restricted to a certain extent. In order to lock the gas spring to stay at any position, an external auxiliary structure needs to be added, which still cannot achieve satisfactory result...

AI Technical Summary

Problems solved by technology

In order to lock the gas spring to stay at any position, an external auxiliary structure needs to be added, but it still cannot achieve satisfactory results, resulting in a complex overall structure, increased cost, and inconvenient maintenance

Images