The invention discloses a center pin bush and a transverse and longitudinal rigidity anisotropic design method thereof, and the design method is characterized in that an inner sleeve is additionally arranged in a pin seat, the inner circumferential surface of the inner sleeve is elliptical, a free gap is formed between the inner sleeve and a center pin along the long axis direction of the inner sleeve, and the inner sleeve and the center pin are in clearance fit along the short axis direction of the inner sleeve; the long axis direction is consistent with the transverse direction, and the short axis direction is consistent with the longitudinal direction; when the locomotive tractor normally runs in a straight line, the center pin is in contact with the inner sleeve in the longitudinal direction to form longitudinal rigidity to transmit traction force or braking force; when a locomotive tractor turns into a large bend and a slow bend, the center pin can move in the free gap in the transverse direction, and when a locomotive body turns into a small bend and a sharp bend, the center pin can eliminate the free gap and then make contact with the inner sleeve to form transverse rigidity. A rubber layer is arranged in the inner sleeve, and the rubber layer adopts a non-equal thickness design, so that the transverse rigidity formed by the contact of the center pin and the inner sleeve is greater than the longitudinal rigidity formed by the contact of the center pin and the inner sleeve.
本发明公开了一种中心销套的横、纵向刚度异性设计方法及中心销套,其中设计方法是在销座的内部增设内套,内套的内周面为椭圆形,沿其长轴方向,内套与中心销之间形成自由间隙,沿其短轴方向,内套与中心销之间形成间隙配合,长轴方向与横向一致,短轴方向与纵向一致;当机车牵引车正常直线行驶时,沿纵向上,利用中心销与内套相接触形成纵向刚度传递牵引力或制动力;当车机车牵引车转大弯缓弯时,沿横向上,中心销会在自由间隙中移动,当车体转小弯急弯时,中心销会消除自由间隙后与内套相接触形成横向刚度;在内套中设置有橡胶层,通过将橡胶层采用非等厚设计,使得中心销与内套相接触形成横向刚度大于中心销与内套相接触形成的纵向刚度。
Design method for anisotropy of transverse rigidity and longitudinal rigidity of center pin bush and center pin bush
一种中心销套的横、纵向刚度异性设计方法及中心销套
2023-12-15
Patent
Electronic Resource
Chinese
IPC: | B61F Untergestelle für Schienenfahrzeuge, z.B. Fahrgestellrahmen, Drehgestelle oder Anordnungen der Radsätze , RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES |
Lightweight method of center pin bush and center pin bush
European Patent Office | 2023
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