A secondary buffer unlocking device for passive protection of high-speed trains

Abstract

The invention provides a high-speed train passive protection secondary buffer unlocking device. The end of a car coupler push rod of the device is fixedly connected with a first train, a car coupler push frame is of a hollow structure and is axially inserted with the car coupler push rod, a first-stage buffer aluminum honeycomb structure sleeves the periphery of the car coupler push rod, the first-stage buffer aluminum honeycomb structure is located between the car coupler push rod and the two ends of the car coupler push frame, a plurality of first pull rods penetrate through the ends of thecar coupler push frame and the first-stage buffer aluminum honeycomb structure to be fixed with the end of the car coupler push rod, and a plurality of second pull rods penetrate through the tail endof the car coupler push frame and a second-stage buffer aluminum honeycomb structure to be fixed with the side face of a second train; a guide part is arranged in the axial direction of the second-stage buffer aluminum honeycomb structure, an unlocking rod is inserted into a guide piece, and the four inclined blocks are hinged to the front end of an inclined block hinge barrel and are matched withthe inner inclined surface of the tail end of the car coupler push frame. The defect of an existing high-speed train energy absorption buffering technology is overcome, ordered dissipation of kineticenergy of the trains is realized, it is guaranteed that unbalance loading is not generated in the buffer process of the trains, and good dynamic stability is achieved.

Description

technical field [0001] The invention relates to a secondary buffer unlocking device for passive protection of high-speed trains, which belongs to the technical field of passive protection for high-speed collisions between adjacent vehicles of high-speed trains. Background technique [0002] As the speed of my country's high-speed trains is getting faster and faster, it has brought great convenience to passengers' travel, and also promoted the rapid development of the regional economy, becoming one of the main modes of transportation today. However, with the rapid increase of train speed, once a collision accident such as derailment occurs, the consequences are often shocking. The train derailment collision accidents that occurred in Germany, the United States and my country in 1998, 2008 and 2011 respectively, respectively 101, 10 and 40 people were killed. Therefore, it is an important issue in the development of high-speed trains to use buffer energy-absorbing structures o...

AI Technical Summary

Problems solved by technology

The disadvantage of this device is that multiple shearing bolts cannot be sheared at the same time, resulting in the inability to ensure that the impacting vehicle moves completely along the vehicle axis, which will cause the risk of unbalanced loading of the vehicle, and it is easy to derail and cause more serious consequences.

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