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Single-piston-rod double-cylinder-barrel hydro-pneumatic spring cylinder

A technology of oil-pneumatic spring cylinder and single piston rod, which is applied in the field of oil-pneumatic spring cylinder, can solve the problem of small variation range of effective stiffness and achieve good cushioning effect and vibration reduction effect

Inactive Publication Date: 2015-12-23
湖北优软汽车科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the shortcoming of the existing oil-pneumatic spring cylinder with a small range of effective stiffness, the present invention proposes a single-piston-rod double-cylinder oil-pneumatic spring cylinder

Method used

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  • Single-piston-rod double-cylinder-barrel hydro-pneumatic spring cylinder
  • Single-piston-rod double-cylinder-barrel hydro-pneumatic spring cylinder

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Embodiment Construction

[0010] Such as figure 1 As shown, the single-piston double-cylinder oil-gas spring cylinder includes an independent cylinder tube 3 at each end. The cylinder tube 3 is assembled with the cylinder bottom 1, the cylinder head 4, the piston 2, (seal and guide device) into one Independent oil-air spring cylinder; sealing and guiding devices are conventional technology, not described in detail here; both ends of a piston rod 5 are connected to the piston 2 of the oil-air spring cylinder at both ends; one oil-air spring cylinder is filled with high-pressure nitrogen B , An oil-air spring cylinder is filled with low-pressure nitrogen A, there are check valves 7 on both ends of the piston rod, and there are damping holes 6 on the piston;

[0011] Two independent oil-air spring cylinders are equivalent to the superposition of two springs with unequal stiffness. When the load is low, the oil-air spring cylinder filled with low-pressure nitrogen B works; when the load reaches a certain value...

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Abstract

The invention provides a single-piston-rod double-cylinder-barrel hydro-pneumatic spring. Equivalently, two hydro-pneumatic spring cylinder bodies share a piston rod. Two independent cylinder barrels are arranged at the two ends respectively and each assembled into an independent hydro-pneumatic spring cylinder body. The hydro-pneumatic spring cylinder body at one end is inflated with high-pressure nitrogen, and the hydro-pneumatic spring cylinder body at the other end is inflated with low-pressure nitrogen. Equivalently, two springs unequal in rigidity are overlapped, when the load is low, the hydro-pneumatic spring cylinder body (at the low air pressure end) inflated with the low-pressure nitrogen works, and after the load reaches a certain value, the two hydro-pneumatic spring cylinder bodies are connected in series to work together, the requirement for the large-range change of the effective rigidity is met, and the appropriate buffering stroke is achieved at the no load and the full load.

Description

Technical field [0001] The invention belongs to an oil-gas spring cylinder, in particular a single-piston rod double-cylinder oil-gas spring cylinder. Background technique [0002] The current oil-air spring cylinder generally adjusts the stiffness through the inflation pressure, and also changes the damping or stiffness through the structure of the piston or cylinder, but the effective stiffness varies in a small range, or the buffer is too short when the stiffness is high, and the oil-air spring is lengthened The stroke of the cylinder is restricted by space. For example, the oil-air spring cylinder for vehicles needs to have a good cushioning stroke at no load and full load. If there is a cushioning effect at no load, the cushioning effect at full load is poor; the initial stiffness is changed by the inflation pressure to ensure the cushioning effect at full load Good, but the rigidity is too large when no load, the cushioning effect becomes worse. The increase in travel is ...

Claims

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Application Information

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IPC IPC(8): F16F9/06
Inventor 郭茂春
Owner 湖北优软汽车科技有限公司
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