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Double air bag type stepless adjustable stiffness oil-pneumatic spring

A technology of oil-gas springs and double airbags, applied in the direction of springs, springs/shock absorbers, gas-liquid shock absorbers, etc., can solve the adjustment of the stiffness of the suspension system. There are few effective methods, and the suspension system cannot be realized. Stiffness is infinitely adjustable and other issues to achieve good sealing effect

Active Publication Date: 2015-12-23
浙江孔辉汽车科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few effective methods for adjusting the stiffness of the suspension system.
Using non-linear stiffness elastic elements such as variable pitch springs or oil-gas springs can improve the comfort of the vehicle to a certain extent, but the stiffness characteristics of these elastic elements are still a fixed curve, and it is impossible to realize the stepless adjustment of the stiffness of the suspension system

Method used

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  • Double air bag type stepless adjustable stiffness oil-pneumatic spring
  • Double air bag type stepless adjustable stiffness oil-pneumatic spring
  • Double air bag type stepless adjustable stiffness oil-pneumatic spring

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Embodiment Construction

[0019] like figure 1 As shown, the oil-gas spring with steplessly adjustable stiffness includes: a lifting lug 1, a main piston rod 2, a first sealing ring 3, a guide sleeve 4, a second sealing ring 5, a guide 6, a main piston 7, and a main cylinder 8. The main working cylinder formed by the first gasket 9 and the flow hole 10 is connected to the oil pipe 11 at the upper end of the main working cylinder, and connected to the auxiliary working cylinder at the other end of the oil pipe 11 . The first sealing ring 3 and the guide sleeve 4 are arranged between the main piston rod 2 and the guide 6, the second sealing ring 5 and the first gasket 9 are arranged between the guide 6 and the master cylinder 8, and the flow hole 10 is arranged on the main piston 7.

[0020] The damping valve assembly includes a valve body 13, a damping hole 14 arranged on the valve body 13, a valve plate 12 fixed on the valve body 13 by bolts 15 and nuts 18, and a valve plate 12 arranged between the va...

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Abstract

The invention relates to a double-air-bag rigidity stepless adjustable oil-gas spring. The oil-gas spring comprises a main working cylinder, an oil tube connected with the upper end of the main working cylinder and an auxiliary working cylinder connected with the other end of the oil tube. The auxiliary working cylinder comprises an auxiliary cylinder barrel connected with the oil tube, a damping valve assembly arranged in the auxiliary cylinder barrel, two air bags and two air bag bases arranged on one side of the damping valve assembly symmetrically, a partition plate arranged between the two air bags, a connection pipe arranged at the other end of the auxiliary cylinder barrel, a solenoid valve arranged on the connection pipe, an oil pumping pipe and an oil return pipe which are connected with the solenoid valve, an oil pump arranged on the oil pumping pipe and an oil tank connected with the oil pumping pipe and the oil return pipe. A ventilation hole is formed in the partition plate. According to the oil-gas spring, the rigidity characteristic of the oil-gas spring is expanded to a changeable range with value assigned freely from a non-linear curve line, the problem of requirement 'contradiction' of the safety and comfort for the suspension system during vehicle traveling is solved, and the whole vehicle adaptability to various traveling conditions is improved.

Description

technical field [0001] The invention relates to an oil-pneumatic spring used in a vehicle suspension system, in particular to a double-airbag-type oil-pneumatic spring with steplessly adjustable stiffness. Background technique [0002] The vehicle's demand for suspension system stiffness and damping will change with changes in driving conditions such as load and road conditions. When the driving conditions change, if the stiffness and damping of the suspension system cannot be adjusted accordingly, it will be difficult to achieve a satisfactory damping effect, which will seriously affect the comfort of the vehicle. [0003] At present, there are many schemes for adjustable damping shock absorbers, and the semi-active suspension technology based on adjustable damping shock absorbers is becoming more and more mature. However, there are few effective methods for adjusting the stiffness of the suspension system. The use of non-linear stiffness elastic elements such as variable...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16F9/06F16F9/44
Inventor 郭孔辉杨业海
Owner 浙江孔辉汽车科技有限公司
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