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High-buffering pseudo-plastic combined spring buffer

A technology of combining springs and buffers, applied in the direction of springs/shock absorbers, shock absorbers, shock absorbers, etc., can solve the problems of insufficient buffer energy storage, limited linear deformation, and excessively high linear elastic force of springs. Simple production, reasonable structural design, and reduced stiffness

Pending Publication Date: 2022-08-05
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present application provides a high-buffering pseudoplastic combined spring buffer, the purpose of which is to overcome the defects of ordinary springs that have too high linear elasticity, limited linear deformation, and insufficient buffer energy storage, and solve the problem of spring pseudoplastic buffering

Method used

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  • High-buffering pseudo-plastic combined spring buffer
  • High-buffering pseudo-plastic combined spring buffer
  • High-buffering pseudo-plastic combined spring buffer

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Embodiment

[0056] like figure 2 Shown, a high-cushion quasi-plastic composite spring buffer. The use of the buffer includes determining the stiffness of the spring, the compressible length and the displacement of the isolation valve: according to the allowable sliding length of the wire rope in the flexible protection system connected to the buffer in this embodiment, determine the stiffness k of the 1# and 2# springs 1 , k 2 3600kN / m, 600kN / m, respectively, stiffness ratio is 0.17, the maximum compressed length D a , D b 0.4m and 0.6m respectively, the length of the sleeve oblong hole D m is 0.5m; the pre-compression distance of the isolation valve to the 2# spring is 0.2m, that is, the pre-compression length of the 2# spring is D p =0.2m;

[0057] The 1# spring with a stiffness of 3600kN / m can be made of SWPB compression spring material, the wire diameter is 14mm, the middle diameter is 26mm, the total number of turns is 8, and the effective number of turns is 6; the 2# with a ...

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Abstract

The invention discloses a high-buffering pseudo-plastic combined spring buffer which comprises a sleeve, a spring, a spring and a spring. The two ends of the sleeve are sealed through sealing plates. The isolating valve is arranged in the sleeve, and the sleeve is divided into a left cavity and a right cavity by the isolating valve; the two base plates are arranged on the two sides of the isolating valve respectively; the first spring and the second spring are arranged in the left cavity and the right cavity of the sleeve respectively. One end of each connecting rod penetrates through the first spring or the second spring to be fixed to the base plate of the corresponding cavity, and the other end of each connecting rod penetrates through the sealing plate to be connected with an external device to be protected. In the initial state, the first spring is kept free, the isolating valve is moved to push the base plate to move to a preset position, and pre-compression is applied to the second spring. The buffer is clear in principle, clear in buffering mechanism and reasonable in structural design, and meanwhile has the remarkable advantages of being continuously adjustable in starting force and capable of being repeatedly used.

Description

technical field [0001] The invention relates to the technical field of flexible protection of rockfall and rockfall, and provides a high-buffer pseudo-plastic combined spring buffer. Background technique [0002] Mountainous areas occupy 2 / 3 of my country's land area, and rockfall disasters occur frequently. The need for rockfall protection is very urgent. As a kind of efficient prevention technology, flexible protection has been widely used in recent years. In the flexible protection system, the energy dissipator / buffer is its core working device, and the energy dissipation / storage component in the protection system can dissipate more than 70% of the energy of the falling rock impact. The commonly used types of energy consumers are pressure relief rings, plate energy consumers and rod energy consumers. According to the principle of action, they can be divided into friction type, plastic deformation type and hybrid type energy consumers; buffers are usually linear tension sp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F7/00E01F7/04
CPCF16F7/00E01F7/045Y02A10/23
Inventor 赵雷邹定富余志祥金云涛田永丁齐欣许浒
Owner SOUTHWEST JIAOTONG UNIV