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Three-level energy dissipation unit and energy dissipation guardrail device

An energy dissipation and damage technology, which is applied to road safety devices, roads, roads, etc., can solve the problems of poor energy dissipation effect of anti-collision guardrails, and achieve the effect of solving large space occupation, good effect and increasing friction effect.

Active Publication Date: 2019-04-19
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the defects and deficiencies in the prior art, the present invention provides a three-stage energy dissipation unit and an energy dissipation guardrail device to overcome the defect of poor energy dissipation effect of the existing anti-collision guardrails

Method used

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  • Three-level energy dissipation unit and energy dissipation guardrail device
  • Three-level energy dissipation unit and energy dissipation guardrail device
  • Three-level energy dissipation unit and energy dissipation guardrail device

Examples

Experimental program
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Effect test

Embodiment 1

[0038] Such as Figures 1 to 7 As shown, a three-stage energy dissipation unit includes an energy dissipation sleeve 1, a damaged body sleeve 2, and a damaged body shaft 3 connected coaxially in sequence; one end of the energy dissipation sleeve 1 is closed, the other end is open, and the open end Connect the damage body sleeve 2, the inner wall of the energy dissipation sleeve 1 is provided with multiple water guide grooves 11, the side wall of the energy dissipation sleeve 1 is provided with water flow holes 12; the inner wall of the damage body sleeve 2 and the outer wall of the damage body shaft 3 It is a corrugated friction surface and is in close contact; one end of the damaged body shaft 3 extending into the damaged body sleeve 2 is connected with a sealing block 4, and the sealing block 4 and the inner wall of the energy dissipation sleeve 1 form a sealed cavity 13, and the sealing block 4 and the inner wall of the energy dissipation sleeve 1 form a sealed cavity 13. A...

Embodiment 2

[0047] Such as figure 1 As shown, this embodiment provides an energy-dissipating guardrail device, which includes multiple three-stage energy-dissipating units 5 in Embodiment 1, and also includes multiple fixed shafts 6 and vertical collision baffles 7 parallel to the fixed shafts 6 And the water supply pipe 8; the sealing end of the energy dissipation sleeve 1 is installed on the fixed shaft 6, the baffle connecting flange 32 is installed on the collision baffle 7, and the energy dissipation sleeve 1 and the damaged body axis 3 are perpendicular to the fixed shaft 6 and the collision baffle 7; the water flow hole 12 and the water supply pipe 8 are in sealed communication through the hose 9, and the hose 9 is provided with a one-way valve 91. Among them, the fixed shaft 6 is vertically fixed on the ground; this embodiment adopts the buffer energy dissipation method of water to make the collision process smooth, specifically, the water energy is replenished into the sealed cav...

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Abstract

The invention discloses a three-level energy dissipation unit and an energy dissipation guardrail device. The three-level energy dissipation unit comprises an energy dissipation sleeve, a damaged bodysleeve and a damaged body shaft. The energy dissipation sleeve, the damaged body sleeve and the damaged body shaft are coaxially sequentially connected with one another; the energy dissipation sleeveis provided with a closed end and an opening end, the opening end is connected with the damaged body sleeve, a plurality of water guide grooves are formed in the inner wall of the energy dissipationsleeve, and a water flow through hole is formed in a side wall of the energy dissipation sleeve; corrugated rubbing surfaces are arranged on the inner wall of the damaged body sleeve and the outer wall of the damaged body shaft, and the inner wall of the damaged body sleeve and the outer wall of the damaged body shaft are in close contact with each other; a seal block is connected with the end, which extends into the damaged body sleeve, of the damaged body shaft, a seal cavity is enclosed by the seal block and the inner wall of the energy dissipation sleeve, and a spring is arranged between the seal block and the inner bottom surface of the energy dissipation sleeve; the distances from the water guide grooves to the seal block are longer than zero. The three-level energy dissipation unitand the energy dissipation guardrail device have the advantages that three-level energy dissipation can be implemented by the aid of shear force of the damaged body shaft and the damaged body sleeve,deformation of the spring and cushioning effects of water, and effects of high impact force can be borne.

Description

technical field [0001] The invention belongs to the technical field of road safety protection, and relates to a three-stage energy dissipation unit and an energy dissipation guardrail device. Background technique [0002] In recent years, my country's highway construction has developed rapidly. Up to now, the total mileage of my country's highways has reached 1.7 million kilometers, but the road traffic safety problems brought about by it have become increasingly prominent. Highway imitation anti-collision guardrail is one of the most important safety protection measures. It plays an important role in the development of national economy and society, and is the most important safety guarantee facility for highways. The existing anti-collision barriers are directly connected by reinforced concrete, which can protect the vehicle. However, the rigidity of the reinforced concrete guardrail structure is too large, and the energy dissipation effect after the collision of the car is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01F15/02E01F15/14
CPCE01F15/02E01F15/146
Inventor 张军文川刘甫江桂升赵晓通陶君
Owner CHANGAN UNIV
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