CN-224229149-U - Multi-cavity variable-rigidity air spring structure

CN224229149UCN 224229149 UCN224229149 UCN 224229149UCN-224229149-U

Abstract

The application relates to a multi-cavity variable-stiffness air spring structure which comprises an air bag, at least two auxiliary air chambers, an air charging and discharging unit and a control unit, wherein the top and the bottom of the air bag are respectively connected with a supporting top cover and a piston assembly, the inside of the air bag is a main air chamber, the auxiliary air chambers are distributed outside the main air chamber and are communicated with the main air chamber through independent communication channels, damping holes and electromagnetic valves are sequentially formed in the communication channels, the air charging and discharging unit comprises an air compressor and an air storage cylinder, the center of the top of the supporting top cover is provided with an air interface communicated with the inside of the main air chamber, the air interface is connected with an air charging and discharging pipeline, the air compressor is arranged at the other end of the air charging and discharging pipeline, the air storage cylinder is communicated with the air compressor through a pipeline, and the control unit is electrically connected with the electromagnetic valves and the air compressor. The application realizes the wide, rapid and accurate adjustment of the rigidity of the air spring through multi-cavity combination, air pressure control and adjustment, and remarkably improves the shock absorption performance and adaptability.

Inventors

WEI CHEN
LI XUEBING
WANG XIJIAN
XUAN SHUBO
TANG XIAOLI
ZHOU XINCHENG
XUE HENG
HUANG JIAN

Assignees

南阳金博减振科技有限公司

Dates

Publication Date: 20260512
Application Date: 20250527

Claims (5)

1. A multi-cavity variable stiffness air spring construction, the air spring construction comprising: The air bag (1), the top and the bottom of the air bag (1) are respectively connected with a supporting top cover (2) and a piston assembly, and a main air chamber (4) is arranged inside the air bag (1); The auxiliary air chambers (5) are distributed outside the main air chamber (4), each auxiliary air chamber (5) is communicated with the main air chamber (4) through an independent communication channel (6), and damping holes (7) and electromagnetic valves (8) are sequentially formed in the communication channels (6); the air charging and discharging unit comprises an air compressor (9) and an air storage cylinder (10), the center of the top of the supporting top cover (2) is provided with an air interface (11) communicated with the inside of the main air chamber (4), the air interface (11) is connected with an air charging and discharging pipeline (12), the air compressor (9) is arranged at the other end of the air charging and discharging pipeline (12), and the air storage cylinder (10) is communicated with the air compressor (9) through a pipeline; And the control unit is electrically connected with the electromagnetic valve (8) and the air compressor (9).
2. A multi-chamber variable stiffness air spring construction as claimed in claim 1 wherein the number of secondary air chambers (5) is 2-4 and the volume is of a gradient design.
3. A multi-cavity variable stiffness air spring construction as claimed in claim 1, wherein the piston assembly comprises a piston body (3), a piston containing cavity (13) is arranged in the piston body (3), and the upper end of the piston containing cavity (13) is communicated with the main air chamber (4).
4. A multi-cavity variable stiffness air spring structure as claimed in claim 3, characterized in that a cavity containing air chamber (14) is arranged in the center of the inner bottom of the piston main body (3), the cavity containing air chamber (14) comprises a cavity (15) with a hollow inside, and a through hole (16) communicated with the main air chamber (4) is formed in the top of the cavity (15).
5. A multi-cavity variable stiffness air spring structure as claimed in claim 4, wherein a plurality of through grooves (17) are uniformly formed in the side wall of the cavity (15) along the axis of the cavity, and the cavity air chamber (14) is communicated with the piston cavity (13) through the through grooves (17).

Description

Multi-cavity variable-rigidity air spring structure Technical Field The application relates to the technical field of air springs, in particular to a multi-cavity variable-stiffness air spring structure. Background Air springs are widely used in many fields as an important shock absorbing element by virtue of their unique elastic properties. Compared with the traditional metal spring, the air spring has nonlinear elastic characteristics, can better adapt to different loads and working conditions, and provides more comfortable damping effect. However, there are still some significant limitations to the existing air spring technology. Most of air springs in the current market are of single-cavity or simple double-cavity structures, the rigidity adjusting range of the air springs is limited, and the air springs are difficult to meet the complex and changeable actual use requirements. For example, in a vehicle suspension system, the stiffness requirements for the air springs vary widely under empty, full, and different travel speeds and road conditions. The single-chamber or dual-chamber air springs cannot adjust stiffness in real time and accurately according to these changes, resulting in the comfort and handling stability of the vehicle being affected. In addition, some existing multi-cavity air springs have certain rigidity adjusting capability, but the communication mode among air chambers is relatively fixed, and an effective dynamic control mechanism is lacked. When the vibration or load of the burst is changed, the response speed is low, and the rigidity cannot be adjusted in time so as to achieve the optimal damping effect. Moreover, the inflation and deflation system of the traditional air spring is not perfect enough, efficient cooperative work cannot be realized with the multi-cavity structure, accurate adjustment of air pressure and rigidity is difficult to realize, and accordingly improvement of the overall performance of the air spring is limited. Disclosure of utility model The utility model mainly aims at the problems of the existing air springs, and provides a multi-cavity variable-stiffness air spring structure which can flexibly, rapidly and accurately adjust the stiffness of the air spring according to different loads and working conditions, and remarkably improve the damping performance and adaptability so as to meet the diversified requirements of the fields of vehicle suspension systems, industrial equipment damping and the like. The aim of the utility model is mainly achieved by the following scheme: a multi-cavity variable stiffness air spring structure comprising: The top and the bottom of the air bag are respectively connected with a supporting top cover and a piston assembly, and a main air chamber is arranged inside the air bag; The auxiliary air chambers are distributed outside the main air chamber, each auxiliary air chamber is communicated with the main air chamber through an independent communication channel, and damping holes and electromagnetic valves are sequentially arranged on the communication channels; The air charging and discharging unit comprises an air compressor and an air storage cylinder, the center of the top of the supporting top cover is provided with an air interface communicated with the inside of the main air chamber, the air interface is connected with an air charging and discharging pipeline, the air compressor is arranged at the other end of the air charging and discharging pipeline, and the air storage cylinder is communicated with the air compressor through a pipeline; and the control unit is electrically connected with the electromagnetic valve and the air compressor. Preferably, the number of the auxiliary air chambers is 2-4, and the volumes of the auxiliary air chambers are designed in a gradient mode. Preferably, the piston assembly comprises a piston main body, a piston containing cavity is formed in the piston main body, and the upper end of the piston containing cavity is communicated with the main air chamber. Preferably, the center of the inner bottom of the piston main body is provided with a cavity chamber, the cavity chamber comprises a hollow cavity, and the top of the cavity is provided with a through hole communicated with the main chamber. Preferably, the side wall of the cavity is uniformly provided with a plurality of through grooves along the axis of the cavity, and the cavity air chamber is communicated with the piston cavity through the through grooves. In summary, compared with the prior art, the utility model has the following beneficial technical effects: (1) According to the utility model, 2-4 auxiliary air chambers with gradient volumes are arranged, and the control unit is used for controlling the opening and closing of the electromagnetic valve, so that various combination communication modes of the main air chamber and different auxiliary air chambers are realized, the multi-cavity combination mode greatly increases the air