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2. 发明授权

US4343099A Apparatus for the parallel guidance of the bucket of a hydraulic excavator 失效
标题翻译：用于平行引导液压挖掘机铲斗的装置
公开(公告)号：US4343099A
公开(公告)日：1982-08-10
申请号：US209206
申请日：1980-11-21
申请人： Mario Ziegler , Ulrich Ziegler
发明人： Mario Ziegler , Ulrich Ziegler
IPC分类号： E02F3/43 , E02F5/02
CPC分类号： E02F3/437 , Y10S37/907 , Y10T137/86485
摘要： In a hydraulic dredger/excavator wherein it is desired to guide the bucket parallel to itself there is provided a control apparatus for positively controlling the necessary changes of angle between the dipper boom (4) and the bucket (5) in dependence on the change of the angle between the boom (2) and the dipper boom (4). The control apparatus has a cam disc (11) on the end of the boom (2) against which the piston rod (13) of a first control cylinder (12) arranged on the dipper boom engages under the effect of a spring (15). Both cylinder spaces or chambers of the double-acting first control cylinder (12) are connected with the corresponding cylinder spaces or chambers of a double-acting second control cylinder (16) via lines or ducts (17, 18). The second control cylinder is arranged to be parallel with the operating cylinder (10) that serves for changing the angle between the dipper boom (4) and the bucket (5). The ducts or lines (17, 18) connecting the control cylinders (12, 16) are connected with pilot valves (20, 25) of a main valve (21) for the operating cylinders (10). When the dipper boom swivels relative to the boom a pressure change arises in the pressure medium within the control cylinders and the pressure changes control the main valve (21) until the desired angle changes are achieved.
摘要翻译：在其中期望引导铲斗平行于自身的液压挖掘机/挖掘机中，提供一种控制装置，用于根据铲斗（4）和铲斗（5）之间的变化来积极地控制铲斗（4）和铲斗（5）之间的角度的必要变化悬臂（2）和铲斗臂（4）之间的角度。控制装置具有在悬臂（2）的端部上的凸轮盘（11），布置在铲斗臂上的第一控制缸（12）的活塞杆（13）在弹簧（15）的作用下接合，。双作用第一控制缸（12）的两个气缸空间或室通过管线或管道（17,18）与双作用第二控制缸（16）的相应的气缸空间或室相连接。第二控制缸被布置成与用于改变铲斗（4）和铲斗（5）之间的角度的操作缸（10）平行。连接控制气缸（12,16）的管道（17,18）与用于操作气缸（10）的主阀（21）的先导阀（20,25）连接。当铲斗臂相对于起重臂旋转时，在控制缸内的压力介质中产生压力变化，并且压力变化控制主阀（21），直到实现所需的角度变化。

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