Double-air chamber piston type energy accumulator for oil gas suspension

Abstract

The invention provides a double-air chamber piston type energy accumulator for an oil gas suspension, and belongs to the technical field of oil gas suspensions. The double-air chamber piston type energy accumulator for the oil gas suspension comprises an upper cylinder body and a lower cylinder body, the inner cross sectional area of the upper cylinder body is not equal to the inner cross sectional area of the lower cylinder body, the lower end of the upper cylinder body and the upper end of the lower cylinder body are in sealed connection to enable the upper cylinder body and the lower cylinder body to communicate with each other, an upper floating piston is arranged in the upper cylinder body, a lower floating piston is arranged in the lower cylinder body, a limiting block is arranged atthe position, between the upper floating piston and the lower floating piston, of the upper cylinder body or the lower cylinder body, an up-and-down through oil hole is formed in the middle portion of the limiting block, an oil nozzle is connected to the position, between the upper floating piston and the lower floating piston, of the upper cylinder body or the lower cylinder body, the upper cylinder body is connected with an upper gas injecting nozzle through an air way, and the lower cylinder body is connected to a lower as injecting nozzle through an air way. The double-air chamber pistontype energy accumulator has the beneficial effects that the effective working areas of two air chambers are different, the damping thrusts of the two air chambers are different, buffer damping provided by the oil gas suspension can be guaranteed, and meanwhile, the requirement of a vehicle during non-load or full-load states is met.

Description

technical field [0001] The invention relates to the technical field of oil-pneumatic suspension, in particular to a double-chamber piston accumulator for oil-pneumatic suspension. Background technique [0002] The oil-pneumatic suspension can change the stiffness, which can better cushion and damp the vehicle, and has been widely used in heavy trucks and engineering vehicles. The current oil-pneumatic suspension generally consists of an oil cylinder and a single-chamber accumulator, and its principle is to adjust the stiffness through the air pressure of the air chamber of the single-chamber accumulator. The current single-chamber accumulator cannot ensure that the buffering and vibration reduction provided by the oil cylinder can meet the requirements of the vehicle at no-load and full-load at the same time. Specifically, when adjusting the air pressure of the air chamber of the single-chamber accumulator to meet the vehicle running without load, the piston rod of the oil ...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a dual-chamber piston accumulator for oil-pneumatic suspension, which solves the technical problem that the current accumulator cannot guarantee the cushioning and vibration reduction provided by the oil-pneumatic suspension while meeting the requirements of the vehicle at no-load and full-load

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