TROUBLESHOOTING AND ENERGY ABSORBING DEVICE AND LEADING CAR OF MOTOR TRAIN UNIT

摘要

An obstacle removing and energy absorbing device and a leading car of a motor train unit, wherein, the obstacle removing and energy absorbing device is provided with an obstacle removing beam (6) and a bumper cross-beam (15) which are oppositely arranged, an energy absorbing tube assembly with an energy absorbing tube (9) is fixedly connected between the obstacle removing beam (6) and the bumper cross-beam (15), a mounting base (8) is fixedly connected with one end of the energy absorbing tube (9), while a crushing support (13) is threaded onto the other end of the energy absorbing tube (9), the crushing support (13) is provided with a variable-diameter through-hole, a crushing convex portion (20) is provided in the variable-diameter through-hole, a concave portion (21) matched with the crushing convex portion (20) is arranged at an end portion where the energy absorbing tube (9) is penetrated into the crushing support (13), the mounting base (8) is fixedly connected with the obstacle removing beam (6), the crushing support (13) is fixedly connected with the bumper cross-beam (15). Since an energy absorbing tube assembly is provided, when the obstacle removing and energy absorbing device collides with an obstacle and produces large impact, the energy absorbing tube (9) in the energy absorbing tube assembly is crushingly deformed to absorb most of the impact energy, such that the car body suffers less impact, which guarantees stability and safety of the moving train.