牵引连杆是连接转向架和车体,将发动机等的驱动力和制动力传递给车体的零件。转向架的振动也通过牵引连杆传递给车体,由此引发了车体的垂向弯曲振动(以下称弯曲振动),造成乘坐舒适性降低。此发明是在牵引连杆两端的转向架与车体结合部位使用的缓冲橡胶上设计出微小缝隙,以此隔绝转向架传递的振动,抑制车体弯曲振动的发生,只要用它替换目前已装用的缓冲橡胶即可(见图1)。图1装有位移依存性缓冲橡胶的牵引连杆 Traction link is connected to the bogie and the body, the engine and other driving force and braking force transmitted to the body parts. The vibration of the bogie is also transmitted to the vehicle body through the traction link, thereby causing vertical bending vibration (hereinafter referred to as bending vibration) of the vehicle body, resulting in reduced riding comfort. The invention is to design a tiny gap on the rubber cushion used at the joint part between the bogie and the vehicle body of the traction connecting rod so as to cut off the vibration transmitted by the bogie and restrain the bending vibration of the vehicle body, The buffer rubber can be (see Figure 1). Figure 1 Drift link with displacement-dependent bumper rubber