车架俗称大梁，它是整个汽车的骨架。汽车在行驶中，车架要承受的重量以及各大总成件的质量，而且还要承受传动系统的扭矩，对于牵引车和施、拉的牵引力。汽车行驶在凹凸不平的路面以及受到车轮的冲击负荷时，车架要产生弯曲和扭曲变形，这些变形都会影响各个总成的工作。因此，车架必须有一定的强度和刚度，同时车架在总体布局上要求尽量降低高度已降低汽车的重心，提高汽车行驶稳定性。


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车架俗称大梁，它是整个汽车的骨架。汽车在行驶中，车架要承受的重量以及各大总成件的质量，而且还要承受传动系统的扭矩，对于牵引车和施、拉的牵引力。汽车行驶在凹凸不平的路面以及受到车轮的冲击负荷时，车架要产生弯曲和扭曲变形，这些变形都会影响各个总成的工作。因此，车架必须有一定的强度和刚度，同时车架在总体布局上要求尽量降低高度已降低汽车的重心，提高汽车行驶稳定性。
Car frame, also called "crossbeam", is the framework of the whole car. When the car is going, the frame has to support the load and the weight of assembly parts of the car and also bear the torsion from the transmission system and the pulling power from a draft engine. When the car is running on bumpy roads and burdened the shock from wheels, the frame will bend and be tortured and these deformations will influence in turn on the functions of the car assemblies. Therefore, the car frame must have enough strenth and toughness and in overall arrangement its height should be as low as possible in order to lower the center of gravity of the whole car and to increase the stability of driving.

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