公开(公告)号：US4207740A

公开(公告)日：1980-06-17

申请号：US47771

申请日：1979-06-12

申请人： Bjorn S. Ripa

发明人： Bjorn S. Ripa

IPC分类号： E02F3/42 ,  E02F9/22 ,  F15B11/17 ,  F15B13/06 ,  F15B13/09

CPC分类号： E02F3/42 ,  E02F9/22 ,  F15B11/17 ,  F15B2211/20538 ,  F15B2211/20576 ,  F15B2211/30565 ,  F15B2211/3116 ,  F15B2211/7142 ,  F15B2211/78 ,  Y10T137/87185

摘要： A valve block for hydraulic excavators having at least two sets of valves which are each coupled to their pump. The valves are of the type which, in the unactuated state, allows the passage of pressure medium. The hydraulic devices for executing working movements of the excavator are each coupled to their valve in each set. The valves in the one set are coupled in series, counted from the pump in the sequence the valve which is coupled to the hydraulic device for the first working movement of the excavator, the valve which is coupled to the hydraulic device for the second working movement of the excavator, and the valve which is coupled to the hydraulic device for the third working movement of the excavator. The valves in the second set are similarly coupled in series counted from the pump in the sequence the valve which is coupled to the hydraulic device for the third working movement of the excavator, the valve which is coupled to the hydraulic device for the second working movement of the excavator and the valve which is coupled to the hydraulic device for the first working movement of the excavator. In the case when the excavator has caterpillar tracks driven by means of hydraulic motors, one valve for each of the hydraulic motors may be coupled before, after or in parallel with each series of valves to the hydraulic devices for executing the working movements of the excavator.

摘要翻译： 一种用于液压挖掘机的阀块，其具有至少两组各自连接到其泵的阀组。 这些阀门处于非致动状态，允许压力介质通过。 用于执行挖掘机的工作运动的液压装置每个都联接到每个组中的阀。 一组中的阀串联耦合，从泵中依次排列与阀联接的液压装置，用于挖掘机的第一工作运动，该阀联接到用于第二工作运动的液压装置 以及与挖掘机的第三工作运动的液压装置连接的阀。 第二组中的阀类似地从泵顺序地连接到与泵连接的阀，该阀联接到用于挖掘机的第三工作运动的液压装置，该阀连接到用于第二工作运动的液压装置 的挖掘机和连接到挖掘机的第一工作运动的液压装置的阀。 在挖掘机具有通过液压马达驱动的履带式履带的情况下，用于每个液压马达的一个阀可以在每个系列的阀之前，之后或之后联接到液压装置，以执行挖掘机的工作运动 。