我厂生产7C—5D型农用挂车。现将该挂车牵引环的改进介绍如下: 图1是改进前的牵引环,环上只有单挡套支撑,其缺点是支撑力较小,不能承受牵引环较大的扭力;只在牵引时起减震作用,而当主车减速挂车撞击主车时,没有减震作用。为了克服上述缺点,我们参考了一些车型的牵引 I plant production 7C-5D-type agricultural trailer. Now the trailer traction ring improvements are as follows: Figure 1 is to improve the traction ring, the ring only single retaining sleeve, the disadvantage is that the support force is small, can not afford the traction ring larger torque; only from traction Damping effect, and when the main car deceleration trailer hit the main car, there is no damping effect. In order to overcome the above shortcomings, we refer to the traction of some models