The invention discloses a tandem overflow pressure-limiting valve of a hydraulic retarder. The tandem overflow pressure-limiting valve comprises a first-stage pressure-limiting valve and a second-stage pressure-limiting valve, the valve body is integrated on the retarder shell; the first-stage pressure limiting valve is installed in the second-stage pressure limiting valve, and a valve body of the second-stage pressure limiting valve is integrated on the retarder shell. The second-stage pressure limiting valve is communicated with a retarder working cavity through a main oil duct, an oil inlet is formed in the front end of the second-stage pressure limiting valve, and the two ends of the oil inlet are communicated with the main oil duct and the pressure limiting valve respectively, so that the first-stage pressure limiting valve and the second-stage pressure limiting valve form a series connection structure; an oil discharge port of the first-stage pressure limiting valve is communicated with an oil discharge port of the second-stage pressure limiting valve, and an oil discharge port of the second-stage pressure limiting valve is communicated with the oil storage cavity. The first-stage pressure limiting valve is a plunger type pressure limiting valve, and the second-stage pressure limiting valve is a ball type safety valve.
本发明公开了一种液力缓速器串联式溢流限压阀,包括一级限压阀以及二级限压阀;所述阀体集成在缓速器壳体上;所述一级限压阀安装在二级限压阀内,二级限压阀阀体集成在缓速器壳体上;二级限压阀通过主油道与缓速器工作腔联通,二级限压阀前端设有进油口,进油口两端分别与主油道及以及限压阀联通,使一级限压阀与二级限压阀形成串联结构;一级限压阀的卸油口与二级限压阀的卸油口联通,二级限压阀的卸油口与储油腔联通。一级限压阀为柱塞式限压阀,所述二级限压阀为球式安全阀。
Tandem type overflow pressure limiting valve of hydraulic retarder
一种液力缓速器串联式溢流限压阀
2023-08-04
Patent
Electronic Resource
Chinese
Parallel overflow pressure-limiting valve of hydraulic retarder
European Patent Office | 2023
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