Rotary anti-collision barrier based on magnetorheological adhesive

An anti-collision guardrail and magnetorheological technology, applied in the direction of adhesives, adhesive types, polyurea/polyurethane adhesives, etc., can solve problems such as poor cushioning and energy absorption performance, and reduce major personnel injuries and economic losses , Sensitive magnetic field responsiveness, the effect of reducing impact force and impact energy

Inactive Publication Date: 2019-07-30
CHONGQING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of this, the object of the present invention is to provide a rotating anti-collision barrier based on magneto-rheological glue, to solve the problem of poor energy-absorbing performance of existing barriers

Method used

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  • Rotary anti-collision barrier based on magnetorheological adhesive
  • Rotary anti-collision barrier based on magnetorheological adhesive
  • Rotary anti-collision barrier based on magnetorheological adhesive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] The present invention relates to a rotating anti-collision guardrail based on magnetorheological glue, comprising a first guardrail 1, a connecting terminal 2, a magnetorheological glue 9, a barrel body 11, a permanent magnet 4, a connecting plate 5, and an anchor 6 , the second guardrail 7, reflective strip 10, column 8. The first guardrail 1 is installed on the position of about 30cm below the top half of the column 8 through the connecting plate 5, and three reflective strips 10 are pasted at equal intervals above the barrel body 11, and the barrel body 11 is set on the column 8 again. The second guardrail 7 is installed on the column 8 through the connecting plate 5, and the column 8 is installed on the foot 6 through the connecting plate 5, and the anchor 6 is installed on the ground, and the first guardrail 1 and the second guardrail 7 of each section pass through The connecting terminal 2 and the connecting plate 5 are connected together by fastening screws.

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Embodiment 2

[0044] The difference between this embodiment and Embodiment 1 is that the magnetorheological adhesive 9 in this embodiment is composed of magnetic particles and a polyurethane matrix, wherein the magnetic particles are carbonyl nickel powder; the polyurethane matrix is ​​formed by the reaction of diisocyanate and polyol , and the diisocyanate is 1,5-naphthalene diisocyanate NDI, hexamethyl diisocyanate HDI, and the polyhydric alcohol is 1,2-propanediol, 1,4-butanediol. The prepared magnetorheological adhesive 9 has excellent magnetic field responsiveness and buffer damping performance. The permanent magnet 4 is made of sintered ferrite, the surface is coated, and the shape is hollow cylindrical. A complete long permanent magnet 4 is placed in the middle of the column 8 . The barrel body 11 is made of rubber material. The first guardrail 1 and the second guardrail 7 are made of pre-galvanized aluminum-magnesium guardrail boards, and their shapes are corrugated.

Embodiment 3

[0046] The difference between the present invention and the above embodiments is that the magnetorheological adhesive 9 described in this embodiment is composed of magnetic particles and a polyurethane matrix, wherein the magnetic particles are cobalt carbonyl powder; the polyurethane matrix is ​​formed by the reaction of diisocyanate and polyol, And the diisocyanate is dimethyl biphenyl diisocyanate TODI, isophorone diisocyanate IPDI, and the polyol is butadiene polyol or castor oil. The prepared magnetorheological adhesive 9 has excellent magnetic field responsiveness and buffer damping performance. The permanent magnet 4 is made of AlNiCo, the surface is coated, and the shape is cylindrical and hollow. A complete long permanent magnet 4 is placed in the middle of the column 8 . The barrel body 11 is made of composite material of EVA and polyurethane. The first guardrail 1 and the second guardrail 7 are made of pre-galvanized aluminum-magnesium guardrail boards, and the sha...

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Abstract

The invention belongs to the technical field of highway safety facilities, and relates to a rotary anti-collision barrier based on a magnetorheological adhesive. The rotary anti-collision barrier includes a protective fence and anti-collision bodies arranged on the protective fence, and each anti-collision body comprises a barrel body, a vertical column arranged in the barrel body in a penetratingmode, a permanent magnet sleeving the vertical column and the magnetorheological adhesive arranged between the permanent magnet and the barrel body. The protective fence uses the magnetorheological adhesive with the reversible magnetic control mechanical characteristic as a buffer energy absorbing material to be placed outside and the permanent magnet as a magnetic field generating device to be placed inside, a cyclotron cover plays a role in protecting a magnetic path by sealing the upper part and the lower part, thus the magnetorheological adhesive is gradually close to the permanent magnetunder impact extrusion of the anti-collision barrier, under the action of a magnetic field, damping force of the magnetorheological adhesive is increased, and thus impact energy is greatly buffered and absorbed. After the anti-collision barrier dissipates the impact energy, the anti-collision barrel body and the magnetorheological adhesive can quickly restore to the original state, thus the levelof protection and durability are effectively improved, the personnel safety is safely and efficiently guaranteed, and the vehicle damage is lowered.

Description

technical field [0001] The invention belongs to the technical field of highway safety facilities, and relates to a rotating anti-collision guardrail based on magnetorheological glue. Background technique [0002] It is one of the more serious types of accidents that a car running at high speed crashes into a guardrail on the side of the road or in the middle of the road, and these guardrails are mostly composed of concrete blocks arranged at intervals and metal rails connecting adjacent blocks. The energy absorption of these guardrails is generally weak, it is difficult to fully absorb the impact kinetic energy of the car, and after being collided by the reverse force of the guardrail, the car flips or reverses and deviates from the original lane, which is very easy to be compared with high-speed driving. The coming automobile has a secondary collision, and sparks are easily generated when the automobile and the metal collide at high speed, which can easily cause a fire, agg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E01F15/02E01F15/14C09J175/08C09J175/04C09J175/14C09J11/04
CPCC09J11/04C09J175/04C09J175/08C09J175/14E01F15/02E01F15/14E01F15/145E01F15/146C08K3/18
Inventor 杨平安王迪李锐苟欣冯甚尧王浩周梦娇许可非
Owner CHONGQING UNIV OF POSTS & TELECOMM
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