Telescopic mechanism of telescopic coupler and buffer device for high-speed motor train unit

Abstract

The invention relates to a telescopic mechanism of a telescopic coupler and buffer device for a high-speed motor train unit. The telescopic mechanism comprises a pressed rod which is positioned at one end in a movable shell of the coupler and buffer device and connected with the movable shell, and a bearing joint sleeved on the pressed rod, wherein a guide cylinder is fixedly arranged outside the bearing joint; a telescopic driving mechanism is arranged between the guide cylinder and the movable shell; one end of the pressed rod is connected with the movable shell through a torsion spring; the pressed rod and the bearing joint are locked; a locking mechanism comprises convex heads which are positioned at the other end of the pressed rod and distributed at intervals, and grooves which are positioned on the inner wall of the bearing joint and fitted with the convex heads; when the convex heads are opposite to the grooves, the pressed rod and the bearing joint are unlocked and can relatively slide; and an unlocking driving mechanism is arranged outside the movable shell. The corresponding parts are arranged in the movable shell, so the occupied space is small, and the corresponding parts are well protected; meanwhile, the telescopic mechanism and the locking mechanism have relatively simple structures, are labor-saving and high in action reliability and can bear a high longitudinal load, and the impact energy absorption capacity of a buffer system is relatively high. After the telescopic mechanism is applied, the telescopic coupler and buffer device can be localized and completely replaces imported products.

Description

technical field [0001] The invention relates to a railway vehicle hook and buffer device, in particular to a telescopic hook and buffer device telescopic mechanism for a high-speed EMU installed at the head and tail of a high-speed EMU. Background technique [0002] The hook and buffer device is one of the basic components of the railway vehicle, which can quickly connect and disassemble the railway vehicle, transmit the traction force of the train, improve the safety of the vehicle, and improve the comfort performance of the vehicle. [0003] When the telescopic hook and buffer device is not working, it is placed in the shroud of the head car of the high-speed EMU to reduce the air resistance during train operation, etc., and when it needs to be connected, it protrudes from the shroud so that the trains can be connected. At present, the telescopic hook and buffer devices used in high-speed EMUs are all foreign products, with high prices and long delivery cycles, especially ...

AI Technical Summary

Problems solved by technology

The telescopic drive of foreign manual telescopic hook and buffer devices adopts external rack and pinion transmission, and the unlocking mechanism is also external. The buffer system has a relatively small ability to absorb impact energy, the overall structure takes up a lot of space, and the telescopic and locking structures are complicated.

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