Vehicle end buffering and energy absorbing device

Abstract

The invention provides a vehicle end buffering and energy absorbing device. The vehicle end buffering and energy absorbing device comprises a cylinder body and a buffering and energy absorbing structure. The cylinder body comprises a closed end and an open end; and the energy absorbing structure comprises a buffer energy-absorbing body, a force transmission rod and an elastic piece. The buffer energy-absorbing body is arranged in the cylinder body, and a gap is formed between the end part of one side, facing the opening end of the cylinder body, of the buffer energy-absorbing body and the opening end; the first end of the force transmission rod is connected with the buffering energy-absorbing body, and the second end of the force transmission rod extends out of the cylinder body through the opening end of the cylinder body and transmits external acting force to the buffering energy-absorbing body for buffering energy absorption; and the elastic piece is limited and arranged between the end part of one side, facing the open end of the rod body, of the buffer energy-absorbing body and the open end of the cylinder body, and can be compressed when the buffer energy-absorbing body moves towards the open end of the cylinder body. The elastic piece can buffer return stroke energy. After the buffer energy-absorbing device plays a positive compression energy-absorbing role, the buffer energy-absorbing device can stably and slowly move at a lower speed, so that the vehicle return impact effect caused by the recovery of the buffer can be improved, and the excessive influence of the compression return stroke on the operation of the vehicle is avoided.

Description

technical field [0001] The invention belongs to the technical field of buffer devices for rail vehicles, and in particular relates to a buffer energy-absorbing device at a vehicle end. Background technique [0002] The buffer energy-absorbing device used at the train end, as a safety component at the end of the train, plays the role of alleviating the impulse of the vehicle, protecting the car body and improving ride comfort. [0003] After the vehicle is subjected to tensile force or impact force, the cushioning energy-absorbing component absorbs the tensile energy or impact energy through compression. After the external force disappears, the compressed buffer energy-absorbing components need to recover to prepare for the next action. For conventional energy-absorbing buffer devices, after being compressed or stretched, the recovery energy stored in the internal buffer elements will reverse the movement of the vehicle body and drive the system to reset. This part of energ...

AI Technical Summary

Problems solved by technology

This part of energy is restored to the kinetic energy of the car body, especially the buffer element used to absorb the impact energy in the direction of compression. Its stroke is relatively large, and the stored recovery energy is more. This part of energy is easy to cause the rebound impact of the vehicle, which is not conducive to the impact of the vehicle. full dissipation of kinetic energy

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