破碎机钳的液压控制组合阀
破碎机钳的液压控制组合阀,包括单向阀、外控单向卸荷阀和油路块体,油口A<sub>1</sub>、A<sub>2</sub>构成一条主流道A<sub>1</sub>A<sub>2</sub>,油口B<sub>1</sub>、B<sub>2</sub>构成另一条主流道B<sub>1</sub>B<sub>2</sub>;单向阀入口与主流道B<sub>1</sub>B<sub>2</sub>连通,出口与主流道A<sub>1</sub>A<sub>2</sub>连通;外控单向卸荷阀串联在主流道B<sub>1</sub>B<sub>2</sub>中,控制油口与主流道A<sub>1</sub>A<sub>2</sub>连通;油口A<sub>2</sub>接至无杆腔,油口B<sub>2</sub>接至有杆腔;使机钳在闭合时获得自动切换的快、慢两种速度,缩短了机钳的闭合时间,提高了功效。
实用新型
CN00218660.8
2000-08-02
CN2433446
2001-06-06
F15B13/02
上海三信液压有限公司
孙逸成
201100上海市雅致路雅致公寓
上海市东方专利事务所
李浩东
上海(31)
破碎机钳的液压控制组合阀,包括一个单向阀、一个外控单向卸荷阀和一个油路块体,其特征在于:油路块体设有四个油口A<subscript>1</subscript>、A<subscript>2</subscript>、B<subscript>1</subscript>、B<subscript>2</subscript>,油口A<subscript>1</subscript>、A<subscript>2</subscript>连通构成一条主流道A<subscript>1</subscript>A<subscript>2</subscript>,油口B<subscript>1</subscript>、B<subscript>2</subscript>连通构成另一条主流道B<subscript>1</subscript>B<subscript>2</subscript>;单向阀置于油路块体内,并靠近油口A<subscript>2</subscript>、B<subscript>2</subscript>方位,其上游入口与主流道B<subscript>1</subscript>B<subscript>2</subscript>连通,其下游出口与主流道A<subscript>1</subscript>A<subscript>2</subscript>连通;外控单向卸荷阀串联在主流道B<subscript>1</subscript>B<subscript>2</subscript>中,其上游进油口在油口B<subscript>2</subscript>一端方向,其下游出油口在油口B<subscript>1</subscript>一端方向,其控制油口与主流道A<subscript>1</subscript>A<subscript>2</subscript>连通;油口A<subscript>1</subscript>接至方向控制阀的油口A,油口A<subscript>2</subscript>接至油缸的无杆腔,油口B<subscript>1</subscript>接至方向控制阀的油口B、油口B<subscript>2</subscript>接至油缸的有杆腔。<!-- 1 -->