The double-rear-axle steel plate spring comprises an upper plate spring and a lower plate spring, the upper plate spring comprises a first tensile stress surface and a first pressure stress surface, a first mounting hole is formed in the center area of the first tensile stress surface in the thickness direction of the upper plate spring from top to bottom, and the first mounting hole does not penetrate through the first pressure stress surface; the lower plate spring comprises a second tensile stress surface, a third mounting hole is formed in the central area of the second tensile stress surface from top to bottom in the thickness direction of the lower plate spring, and the first mounting hole, the second mounting hole and the third mounting hole are coaxially arranged. And blind holes of the first mounting holes in the first tensile stress surface and the third mounting holes in the second tensile stress surface are hotly punched by a punching die so as to reduce the stress of the central hole tensile surfaces of the upper plate spring and the lower plate spring. The technical problem that in the technical field of automobile parts, a steel plate spring is short in service life is solved.
本发明公开了一种用于汽车的双后桥钢板板簧包括上位板簧及下位板簧,上位板簧包括第一拉应力面及第一压应力面,第一拉应力面的中心区域沿上位板簧厚度方向自上而下开设有第一安装孔,第一安装孔未贯穿第一压应力面,第一压应力面的中心区域沿上位板簧厚度方向自下而上开设有第二安装孔,下位板簧包括第二拉应力面,第二拉应力面的中心区域沿下位板簧厚度方向自上而下开设第三安装孔,第一安装孔、第二安装孔及第三安装孔同轴布置。位于第一拉应力面的第一安装孔及第二拉应力面的第三安装孔采用冲孔模具热冲盲孔以降低所述上位板簧及下位板簧的中心孔拉应面应力。该发明解决了汽车零部件技术领域中的钢板板簧寿命偏低的技术问题。
Double-rear-axle steel plate spring for automobile
一种用于汽车的双后桥钢板板簧
2024-09-20
Patent
Electronic Resource
Chinese
IPC: | B60G VEHICLE SUSPENSION ARRANGEMENTS , Radaufhängungen und Federungen für Fahrzeuge |
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