The invention relates to a caterpillar track assembly, in order to solve the problem that pin shifting faults are prone to occurring in an existing caterpillar track assembly, the caterpillar track assembly and a manufacturing method thereof, a caterpillar track and engineering machinery are constructed, the caterpillar track assembly comprises a plurality of caterpillar track section sets connected end to end, and any caterpillar track section set comprises two oppositely-arranged caterpillar track sections; every two adjacent chain track section sets are stacked inside and outside the connecting ends and rotationally connected through a pin shaft, the chain track sections, stacked on the outer side at the connecting ends, in the chain track section sets are provided with cylindrical shaft holes in interference fit with the pin shafts, the outer side ends of the shaft holes are provided with radial expansion parts, and the end portions of the pin shafts are provided with expansion parts matched with the radial expansion parts on the shaft holes. And the expansion part is formed by radial expansion plastic deformation generated by the material at the edge of the end part of the pin shaft under axial pressure after the pin shaft is assembled and connected with the track link section. The expansion part formed by extrusion plastic deformation of the end part of the pin shaft is matched with the radial expansion part in the track link joint shaft hole, so that pin shifting of the pin shaft is prevented, and the structure is simple.
本发明涉及链轨组件,为解决现有链轨组件容易发生窜销故障的问题,本发明构造一种链轨组件及其制造方法、履带和工程机械,其中链轨组件包括多个首尾连接的链轨节组,任一链轨节组包括两个相对设置的链轨节,相邻两链轨节组在连接端内外叠置并通过销轴转动连接,链轨节组中在连接端叠置在外侧的链轨节具有与所述销轴过盈配合的圆柱形轴孔,轴孔的外侧端具有径向扩张部,销轴端部具有轴孔上径向扩张部相适配的胀大部,胀大部是在所述销轴与链轨节装配连接后由所述销轴端部边沿材料受轴向压力产生的径向胀大塑性变形形成。本发明通过销轴端部挤压塑性变形形成的胀大部与链轨节轴孔中的径向扩张部向配合,防止销轴窜销,其结构简单。
Caterpillar track assembly, manufacturing method of caterpillar track assembly, caterpillar track and engineering machinery
链轨组件及其制造方法、履带和工程机械
2023-03-31
Patent
Electronic Resource
Chinese
IPC: | B62D MOTOR VEHICLES , Motorfahrzeuge |
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