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多数自卸汽车的结构是在车架和车箱之间具有副车架。它使自卸底盘能与栏板式汽车底盘统一。副车架用于固定自卸装置—车箱、液压升降器、油箱和其它部件。除此之外,副车架还起加强部件的作用。第一,自卸汽车比栏板式载重汽车更能在较艰难道路条件下工作;第二,在行驶时车架可以经受冲击负荷,副车架起缓和冲击的作用。如果在车箱支承上出现缝隙和由此产生的冲击负荷而引起的车架的扭转,由于底盘的角刚度
Most dump trucks are constructed with a subframe between the frame and the trunk. It makes the dump chassis with the hurdle car chassis uniform. Subframes are used to secure dumps - carriages, hydraulic lifters, fuel tanks and other components. In addition, the subframe also plays a role of strengthening components. First, dump trucks are more capable of working under more difficult road conditions than stowage trucks. Second, the frame can withstand the impact loads while driving, and the subframe can ease the impact. If there is a gap in the carriage support and the resulting impact load caused by the torsion of the frame, the chassis due to the angular stiffness