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What is the function of the coupler and draft gear?

1 Answers

Aliyah

07/29/25 11:07pm

The function of the coupler and draft gear: To mitigate the longitudinal impacts and vibrations caused by changes in locomotive traction force during operation, or collisions between vehicles during starting, braking, and shunting operations. The draft gear has the capability to dissipate impacts and vibrations between vehicles, thereby reducing damage to the vehicle structure and loaded cargo. The working principle of the draft gear involves using compressed elastic elements to cushion the impact force, while friction and damping during the deformation of the elastic elements absorb the impact energy. The coupler and draft gear is a vehicle component used to connect vehicles with each other, locomotives, or multiple units, transmitting traction force, braking force, and mitigating longitudinal impact force. It consists of the coupler, draft gear, coupler yoke, follower plate, etc., forming an integrated unit installed in the draft sill at the end of the underframe. This ensures safe and reliable vehicle coupling and interchangeability of the coupler and draft gear installation. Types of draft gears: Based on their structural characteristics and working principles, draft gears can generally be classified into: friction draft gears, rubber draft gears, and hydraulic draft gears.

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