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公开(公告)号：US4526495A
公开(公告)日：1985-07-02
申请号：US540019
申请日：1983-10-07
CPC分类号： E21D23/04 , E21D23/0026 , E21D23/0078 , E21D23/0086 , E21D23/083
摘要： A mobile mine roof support assembly has three mine roof support units coupled together by a common transverse beam. Roller devices are mounted beneath the floor sills of the support units. The roller devices are spring biased away from their floor sills so that they can lift the floor sills away from the floor of a working when the assembly is to be moved. At least one roller device of each support unit is a steerable roller device so that the assembly can be steered round bends. Each steerable roller device is pivotally mounted on its floor sill about a vertical axis, and is provided with an associated steering device. The steerable roller devices are preferably coupled together by means of a common steering device.
摘要翻译： 移动式矿山屋顶支撑组件具有通过公共横梁联接在一起的三个矿山屋顶支撑单元。 滚筒装置安装在支撑单元的底板下方。 辊装置被弹簧偏压离开它们的底板，使得当组件移动时，它们可以将地板梁从地板上提起。 每个支撑单元的至少一个滚子装置是可转向的滚子装置，使得该组件可以转向圆形弯曲。 每个可转向辊装置围绕垂直轴线枢转地安装在其底板上，并且设置有相关联的转向装置。 可操纵的辊装置优选通过公共转向装置连接在一起。
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公开(公告)号：US4347021A
公开(公告)日：1982-08-31
申请号：US147896
申请日：1980-05-08
IPC分类号： E21D23/06 , E21D17/054
CPC分类号： E21D23/066
摘要： A mine roof support has a main roof bar which is pivotably connected to an auxiliary forwardly-extendible bar. A piston and cylinder unit serves to swing the auxiliary bar about the main bar to bring the auxiliary bar into a roof-contacting position aligned with the main bar or into a stowed position beneath the main bar or into some intermediate position. Pivotable guide members connect between the main and auxiliary bars respectively and a pivot joint linked to the piston and cylinder unit. The guide members can take the form of simple straps or levers but an additional piston and cylinder unit can also be used as one of the guide members.
摘要翻译： 矿山屋顶支架有一个主屋顶栏杆，可枢转地连接到一个辅助的向前伸展杆。 活塞和气缸单元用于使辅助杆围绕主杆摆动，以使辅助杆进入与主杆对准的屋顶接触位置或进入主杆下方的收起位置或进入某个中间位置。 枢轴导向件分别连接在主杆和辅助杆之间，枢轴接头连接到活塞和气缸单元上。 引导构件可以采用简单的带子或杠杆的形式，但是附加的活塞和缸单元也可以用作引导构件之一。
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公开(公告)号：US4075857A
公开(公告)日：1978-02-28
申请号：US734934
申请日：1976-10-22
CPC分类号： E21D23/0034 , E21D23/0082 , E21D23/0409 , E21D23/083
摘要： A shield-type support assembly for a mine working is composed of three substantially identical frames aligned side-by-side. Each frame has a floor sill structure which carries props capable of bracing a roof cap and the floor sill structure between the roof and floor of a mine working. A goaf shield is provided for each frame and these shields combine to screen off the goaf zone. The outer frames on the one hand and the central frame on the other are shiftable in alternation with the aid of shifting rams. One or more transverse arms extend across the forward regions of the frames and the or each arm is carried by the central frame floor sill structure. Guide devices are connected to the arm or arms and serve to guide the frames when shifted by the rams and the rams themselves transmit the shifting or reaction forces to the arm or arms.The coupling between the floor sill structures of the frames permits relative vertical mobility therebetween to cope with variations in the floor level of the working.
摘要翻译： 用于矿山加工的屏蔽型支撑组件由并排排列的三个基本相同的框架组成。 每个框架都有一个底梁结构，其承载能够支撑屋顶盖的道具和在矿井工作的屋顶和地板之间的地板梁结构。 为每个框架设置一个防盗罩，并且这些防护罩组合起来以防止脱钩区域。 一方面的外框架和另一方面的中央框架可以随着公差的变化而交替地移动。 一个或多个横向臂横跨框架的前部区域延伸，并且每个臂由中央框架底板结构承载。 引导装置连接到臂或臂并且用于在通过公柱移动时引导框架，并且公柱本身将移动或反作用力传递到臂或臂。
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公开(公告)号：US4048804A
公开(公告)日：1977-09-20
申请号：US721636
申请日：1976-09-08
CPC分类号： E21D23/0034 , E21D23/0427
摘要： A mine support assembly is composed of separate floor-engaging sills each supporting one or more telescopic props and a goaf shield pivotably connected to a roof cap. The props can be extended or retracted to raise or lower the roof cap. The shield is divided into a common upper section and lower parts each pivotably connected to the upper section and to a respective associated one of the floor sills. Levers are pivotably connected between the sills and the upper section of the goaf shield and serve with the lower shield parts as a guide means ensuring the roof cap is raised or lowered without appreciable horizontal displacement. The floor sills and lower shield parts are respectively spaced apart and a shifting ram is connected to the floor sills via a transverse yoke pivotably connected to the forward end regions of the sills. The ram is located in a space between the sills and is connected at its rear end to a cross piece guided in the sills and connected to bars which extend along the space between the sills to form a cantilever beam connected directly or indirectly to a longwall conveyor.
摘要翻译： 矿井支撑组件由分别支撑一个或多个伸缩道具的单独的地板接合框架和可枢转地连接到屋顶盖的侧壁盾构成。 可以延伸或缩回道具以升高或降低屋顶盖。 屏蔽件被分成共同的上部分和下部，每个下部部分可枢转地连接到上部部分和相应的相关联的一个底板。 杠杆可枢转地连接在门槛和舷墙护罩的上部之间，并与下屏蔽部分一起作为导向装置，确保屋顶帽升高或降低，而没有明显的水平位移。 底板和下屏蔽部件分别间隔开，并且移动式活塞通过可枢转地连接到门槛的前端区域的横向轭连接到地板梁。 柱塞位于门槛之间的空间中，并且在其后端处连接到在门槛中引导的横梁，并连接到沿着门槛之间的空间延伸的杆，以形成直接或间接连接到长壁输送机的悬臂梁 。
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