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21. 发明授权

US3779023A Shield roof support 失效
标题翻译：屏风屋支持
公开(公告)号：US3779023A
公开(公告)日：1973-12-18
申请号：US3779023D
申请日：1972-06-23
申请人： RHEINSTAHL AG
发明人： KOPPERS M
IPC分类号： E21D23/00 , E21D23/04 , E21D15/44
CPC分类号： E21D23/0039 , E21D23/0427 , E21D23/0481
摘要： A shield roof support has a sole plate, at least one roof or heel plate and a hydraulic element supporting the roof plate from the sole plate. The hydraulic supporting element includes a piston-cylinder actuator mounted inside the sole plate and extending along the longitudinal axis thereof, the movable element of the actuator being connected to one arm of an angle lever pivoted on a horizontal axis on the sole plate and having its other arm pivotally connected to the roof plate, the angle between the two arms of the lever preferably being adjustable. The lever transforms the force-action line of the actuator from the horizontal direction to the vertical direction. Thrust means on the longer arm of the lever are pivotally connected to the roof plate at a fulcrum, and a locking actuator is interconnected between the roof plate and the longer arm of the lever. A second piston-cylinder actuator extending longitudinally of the sole plate is operable to advance the sole plate relative to the working face of a mining operation, for example.
摘要翻译：屏蔽屋顶支撑件具有底板，至少一个顶板或脚跟板以及从底板支撑屋顶板的液压元件。液压支撑元件包括安装在鞋底板内并沿其纵向轴线延伸的活塞气缸致动器，致动器的可移动元件连接到在底板上在水平轴线上枢转的角度杆的一个臂，并且具有其枢转地连接到屋顶板的另一个臂，杠杆的两个臂之间的角度优选是可调节的。杠杆将执行器的力作用线从水平方向转换到垂直方向。杠杆的较长臂上的推力装置以支点枢转地连接到车顶板，并且锁定致动器在车顶板和杠杆的较长臂之间互连。例如，沿底板纵向延伸的第二活塞气缸致动器可操作以使底板相对于采矿作业的工作面前进。

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