车钩高度是钢轨面至车钩中心线的垂直距离。车辆经过长期运用后,由于车轮踏面、轴瓦白合金、心盘平面和钩颈下部的磨耗,以及上、下心盘垫板及枕簧木垫板破损、压缩下沉,弹簧衰弱以及钩身托板弯曲,钩身托板螺栓松弛或牵引梁下垂等原因,都直接影响车钩高度的改变。 The coupler height is the vertical distance from the rail surface to the coupler centerline. Long-term use of the vehicle, due to the wheel tread, bearing white metal, heart plate and the lower part of the hook neck wear, as well as the upper and lower heart plate and pillow spring pad damage, compression sinking, spring weakness and hook pallet Bending, hook body bolt loose or drawstring sagging and other reasons, have a direct impact on the coupler height changes.