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Crushing pipe anti-bending device for motor train unit

A technology for crushing tubes and EMUs, used in transportation and packaging, railway car body parts, buffers, etc.

Pending Publication Date: 2020-04-10
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of crush tubes on the coupler is extremely risky if the stability of the crush tube at the expansion cone is not addressed

Method used

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  • Crushing pipe anti-bending device for motor train unit
  • Crushing pipe anti-bending device for motor train unit
  • Crushing pipe anti-bending device for motor train unit

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Experimental program
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Embodiment Construction

[0019] The specific implementation of a crush pipe anti-bending device for multiple train sets will be described in detail below in conjunction with the accompanying drawings and specific examples.

[0020] Such as figure 1 As shown, a crush pipe anti-bending device for EMUs includes a base 1 , a guide rod 3 , an expansion cone 4 , a contraction ring 5 , an inner sleeve 6 , a middle sleeve 2 , and an outer sleeve 7 . The guide rod 3 is coaxially arranged in the middle sleeve 2, a gap is provided between the middle sleeve 2 and the guide rod 3, a limit hole 10 is provided in the middle of the guide rod 3, and the middle sleeve 2 The head end of the guide rod 3 is fixed on the first base 1, and the tail end is open. The outer sleeve 7, the inner sleeve 6 and the positioning rod 9 are coaxially fitted sequentially from the outside to the inside. The outer sleeve 7 and the inner sleeve 6 are provided with a gap, the inner sleeve 6 and the positioning rod 9 are provided with a gap...

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Abstract

The invention discloses a crushing pipe anti-bending device for a motor train unit. The device comprises a base, a guide rod, an expansion cone, a contraction ring, an inner sleeve, a middle sleeve and an outer sleeve. The right end of the middle sleeve makes contact with the expansion cone and the contraction ring. The guide rod is in contact with the expansion cone and the inner sleeve. A positioning rod makes contact with a limiting hole. An initial expanding induction structure is arranged at the right end of the middle sleeve in order to reduce the initial triggering peak force of a crushing pipe and can be matched with extrusion of the contraction ring. Plastic deformation of the middle sleeve is reutilized, energy is absorbed through two times of plastic deformation, and the utilization rate of materials is increased. The stability of the expansion cone 4 is enhanced, and instability of the crushing pipe can be effectively prevented.

Description

technical field [0001] The invention belongs to the field of locomotive and vehicle safety, and in particular relates to a crush pipe anti-bending device for an EMU. Background technique [0002] Train collision accidents cannot be avoided. As the speed of rail trains continues to increase, the harmful consequences of collision accidents will become greater. In order to protect the safety of passengers and reduce accident hazards as much as possible, the energy-absorbing and buffering performance of the couplers of rail trains must be as high as possible. critical, and the crush tube is the primary energy-absorbing structure in the coupler. [0003] When compressed, the crushing tube squeezes the outer sleeve through the expansion cone, and the outer sleeve directly undergoes plastic expansion to absorb the impact energy. Its platform force is stable and the energy absorption rate is high. Therefore, the crushing tube is widely used as a main energy-absorbing component. Use...

Claims

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Application Information

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IPC IPC(8): B61G11/18
CPCB61G11/18
Inventor 姚曙光谭博文许平彭勇鲁寨军
Owner CENT SOUTH UNIV
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