The invention discloses an integral through type stroke unloading valve assembly suitable for a taper pin structure. A lower sliding rod is sleeved with a lower valve seat, and the lower sliding rod and the lower valve seat are in interference fit; an upper sliding rod is sleeved in an upper valve seat and is in interference fit with the upper valve seat; one end of a steel pipe is in interference fit with the outer circle of the lower valve seat while the other end is in interference fit with the outer circle of the upper valve seat; a lower taper pin is sleeved in the lower sliding rod and is sealed with the conical surface thereof, and an upper taper pin is sleeved in the upper sliding rod and is sealed with the conical surface thereof; and steps extending towards the two sides are arranged in an inner hole of the steel pipe and used for limiting the lower taper pin and the upper taper pin. The upper taper pin and the lower taper pin can move and are of a through type, and an ejector rod threaded hole does not need to be formed in the valve body; the stroke unloading valve assembly is of an integral structure; and the product consistency is good, and the qualified rate is high when the performance of a steering gear assembly is detected.
一种适用于锥销结构的整体贯通式行程卸荷阀总成,下滑杆套装在下阀座内,二者为过盈配合;上滑杆套在上阀座内,二者为过盈配合;钢管一端与下阀座外圆过盈配合,另一端与上阀座外圆过盈配合;下锥销套装在下滑杆内并与其锥面密封,上锥销套装在上滑杆内并与其锥面密封;钢管内孔中设有向两侧延伸的台阶,对下锥销及上锥销限位。本发明的上下锥销可以活动且为贯通式,无需在阀体上布置安装顶杆螺纹孔;且为整体式结构;产品一致性较好,转向器总成性能检测时合格率较高。
Integral through type stroke unloading valve assembly suitable for taper pin structure
一种适用于锥销结构的整体贯通式行程卸荷阀总成
2021-08-17
Patent
Electronic Resource
Chinese
IPC: | B62D MOTOR VEHICLES , Motorfahrzeuge |
Power-assisted steering cylinder assembly with stroke unloading valve
European Patent Office | 2020
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