Power car collision device of belt pipe wall type jet energy dissipator

Abstract

The invention relates to a power car collision device of a belt pipe wall type jet energy dissipater, which comprises a piston cylinder, pipe wall jet holes, a jet buffer chamber, a liquid drainage pipe, a low-pressure connecting pipe and an anti-freezing box. The device is characterized in that the piston cylinder wall is provided with at least one pipe wall jet hole, and the periphery of all the pipe wall jet holes is provided with the jet buffer chamber; the pipe wall jet holes sequentially pass through the wall of the piston cylinder along the longitudinal direction of the piston cylinder; the liquid drainage pipe is fixedly connected with the jet buffer chamber; and one end of the low-pressure connecting pipe is connected with the liquid drainage pipe, while the other end is connected with the anti-freezing liquid box. The device can be used for reducing the acceleration peak value of a vehicle body and can achieve the purposes of first softness and then hardness in a collision process of the vehicle body, automatically adapt to 100 percent front collision and offset collision, achieve the purposes of firstly preventing front collision and then preventing rear-end collision and guarantee that the vehicle body is in a stretching state in the collision process so as to greatly improve the safety of the vehicle.

Description

technical field [0001] The invention relates to an anti-collision device for a motor vehicle, in particular to a collision device for a motor vehicle with a pipe wall type jet energy consumer. Background technique [0002] Since the advent of motor vehicles in 1886, while bringing convenience to human life and work, road traffic accidents have also caused a large number of casualties and property losses. So far, more than 34 million people have died in car accidents worldwide, while hundreds of millions of people have been injured or disabled. According to the "Global Status of Road Safety" report published by the World Health Organization (WHO) on June 15, 2009, the number of deaths involving road traffic accidents in 2008 was as high as 1.2 million, and 20 to 30 million were injured or disabled. The annual economic loss caused by traffic accidents exceeds 700 billion US dollars. [0003] The body of the existing motor vehicle is in a compressed state during the impact pr...

AI Technical Summary

Problems solved by technology

But this patent has the following problems: ①During the collision process, since the number of nozzles participating in the injection is constant, the test results show that the speed curve of the motor vehicle body is a half-width sinusoidal curve, and the piston advances about 2 / 3 of the distance and consumes 92% of the engine power. The kinetic energy of the motor vehicle, the remaining about 1 / 3 of the distance consumes only 8% of the kinetic energy of the motor vehicle, which is manifested by the excessive peak pressure of the liquid in the tubular longitudinal beam and the high peak acceleration of the vehicle body

This is because when a frontal collision occurs, the front piston has already extended into the bottom of the front piston cylinder. At this time, a rear-end collision occurs. When the rear piston is pushed forward, the front piston will also move forward at the same time, and the reset process of the front piston will consume almost no energy. Any energy, the pressure of the liquid in the tubular stringer cannot be established, and the nozzle type energy consumption device and the piston type energy consumption device cannot function at this time. crush casualty

③When the motor vehicle collides at a very high speed, the propulsion distance of the front piston ejector rod may be greater than the design distance. At this time, the anti-collision rod will directly impact on the end cover of the piston cylinder, which will cause the motor vehicle body to be in a compressed state, seriously may result in personal injury

④ Regardless of whether it is a 100% full frontal collision or a 70% offset collision, the number of nozzles participating in the injection remains the same, and it is impossible to satisfy 100% full frontal collision and 70% offset collision at the same time

⑦The high-speed fluid ejected from the nozzle will generate a relatively large impact force, and this patent cannot use this impact force to help the motor vehicle body in a stretched state

⑧ From the previous analysis, it can be seen that after a frontal collision, the front piston hardly consumes energy in the process of retreating, and the front piston resets without encountering resistance, which will easily lead to a relatively large rebound speed of the motor vehicle, which is not conducive to personnel protection

⑩The spring is too soft, and a light collision will cause the car body to deform, which is not conducive to industrial application; in addition, placing the spring at the bottom of the piston cylinder is not conducive to reducing the length of the piston cylinder, and is not conducive to industrial application

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