平衡重式叉车转向桥与车架的联接,除小型电瓶叉车采用钢板弹簧悬挂型式外,较大型的内燃叉车多用中央水平铰轴联接结构,而这种结构又有水平的和中部下凹的两种(见图1、2),它们的转向梯形机构都布置在桥的上盖板上面,水平联接铰的位置相对较低。近年来,这些结构有所变化,虽仍用水平铰轴联接,但桥的中部却向上凸起,使水平联接铰的 Balanced forklift steering axle and the frame of the connection, in addition to small battery forklift with leaf spring suspension type, the larger internal combustion forklifts and more central horizontal hinge joint structure, and this structure has horizontal and the middle of two concave (See Figure 1, 2), their steering trapezoidal mechanism are arranged in the bridge above the cover, the horizontal joint hinge position is relatively low. In recent years, these structures have changed, although the horizontal hinge is still used to connect, but the central part of the bridge is raised up, so that the level of the hinge