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公开(公告)号：US4124984A
公开(公告)日：1978-11-14
申请号：US835889
申请日：1977-09-23
申请人： Graham J. Saunders
发明人： Graham J. Saunders
CPC分类号： E21D23/063
摘要： A mine roof support embodying a roof engaging cover and a forepole. The cover is composed of a leading part and a trailing part relatively adjustable with respect to one another. A base member is provided with a plurality of hydraulic rams engagable with said cover for raising and lowering same. The forepole is capable of being extended and retracted with respect to the leading part of the cover.
摘要翻译： 一个矿顶支架体现了一个屋顶接合盖和一个前哨。 盖由相对于彼此相对可调节的前导部分和后部部分组成。 底座部件具有可与所述盖接合的多个液压凸起，用于升高和降低它。 前臂能够相对于盖的前部延伸和缩回。
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公开(公告)号：US4548527A
公开(公告)日：1985-10-22
申请号：US622844
申请日：1984-06-21
IPC分类号： E21D17/02 , E21D17/05 , E21D17/054 , E21D23/06 , E21D15/14
CPC分类号： E21D23/066 , E21D17/02
摘要： A roof support suitable for use in mines comprises a main roof-supporting structure, a cantilever carried by the structure, an actuator and a link member through the intermediary of which the actuator is connected to one end portion of the cantilever for moving the cantilever between retracted and extended positions. The end portion of the cantilever has projections which come into engagement with an abutment when, upon advancing movement of the actuator, the cantilever reaches its fully extended position. The abutment and projections are so shaped that when they are in engagement they form pivot means about which the cantilever can be tilted. The link member is so formed and so connected to the cantilever that upon further advancing movement of the actuator the cantilever is caused to tilt about the pivot means into a roof-supporting position.
摘要翻译： 适用于矿山的屋顶支撑件包括主屋顶支撑结构，由结构承载的悬臂，致动器和连杆构件，通过该连杆构件将致动器连接到悬臂的一个端部，以使悬臂在 缩回和延伸位置。 悬臂的端部具有与基座接合的突起，当在致动器的前进运动时，悬臂到达其完全伸出的位置。 邻接和突起的形状是这样的，使得当它们处于啮合状态时，它们形成枢转装置，悬臂可围绕该枢转装置倾斜。 连杆构件如此形成并且连接到悬臂，当致动器进一步前进运动时，使悬臂绕枢轴装置倾斜成屋顶支撑位置。
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公开(公告)号：US20120170981A1
公开(公告)日：2012-07-05
申请号：US13420891
申请日：2012-03-15
申请人： Wilfried Weigel , Gerhard Wülfing , Peter Rahms
发明人： Wilfried Weigel , Gerhard Wülfing , Peter Rahms
IPC分类号： E21D17/05
摘要： A hydraulic circuit for longwall support for use in underground mining for supporting a longwall by means of a plurality of support shields comprises in the annular piston line of each cylinder/piston unit a pressure sensor. Said pressure sensor upon reaching a predetermined maximum pressure activates a pressure deviation signal, which causes the entire longwall to be depressurized by means of a longwall shut-off valve. The pressure deviation signal is blocked for one of the hydraulic valves against each triggering signal.
摘要翻译： 用于在地下采矿中用于通过多个支撑屏蔽支撑长壁的长壁支撑的液压回路包括在每个气缸/活塞单元的环形活塞线中的压力传感器。 所述压力传感器在达到预定最大压力时启动压力偏差信号，这使得整个长壁通过长壁截止阀被减压。 一个液压阀的压力偏差信号针对每个触发信号被阻挡。
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公开(公告)号：US4411558A
公开(公告)日：1983-10-25
申请号：US318218
申请日：1981-11-04
申请人： Dennis F. Rutherford
发明人： Dennis F. Rutherford
CPC分类号： E21D23/063 , E21D23/0043
摘要： A roof support including a roof-engageable member and a cantilever member, one having parallel elongate compartments with a cover member which has a roof-engageable surface and which overlies the compartments, and the other having parallel and rigid elongate elements slidably fitting into the compartments. The other member also includes a plate, having a roof-engageable surface, which defines the profile in plan of that member and which is so secured to the elements as to be relatively slidable with respect to the roof-engageable surface of the cover member. The transverse widths of the roof-engageable surfaces are such that when the roof-engageable member and the cantilever member are caused by actuator means relatively to slide from a retracted condition to an extended or partially-extended condition one of those surfaces effectively forms a full width extension of the other.
摘要翻译： 一种屋顶支撑件，其包括屋顶可接合构件和悬臂构件，一个具有平行的细长隔室，其具有覆盖构件，所述盖构件具有屋顶可接合表面并且覆盖在所述隔间上，另一个具有可滑动地装配到所述隔间中的平行和刚性的细长元件 。 另一个构件还包括具有屋顶可接合表面的板，其限定该构件的平面中的轮廓，并且其被固定到元件以相对于盖构件的屋顶可接合表面相对滑动。 屋顶可接合表面的横向宽度使得当屋顶可接合构件和悬臂构件由致动器装置相对地从缩回状态滑动到延伸或部分延伸的状态时，这些表面之一有效地形成一个完整的 宽度扩展的另一个。
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公开(公告)号：US3312071A
公开(公告)日：1967-04-04
申请号：US54816166
申请日：1966-05-06
发明人： GUNTHER DOMMANN
IPC分类号： E21D17/02 , E21D17/05 , E21D17/082 , E21D23/06
CPC分类号： E21D17/082 , E21D17/0206 , E21D23/063
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公开(公告)号：US4784532A
公开(公告)日：1988-11-15
申请号：US63945
申请日：1987-06-19
申请人： Kenneth D. Prescott
发明人： Kenneth D. Prescott
CPC分类号： E21D23/0043 , E21D23/06
摘要： A roof engaging structure for a mine roof support comprises at least two relatively movable roof engaging members 21 and 23, which are coupled together by at least two spaced-apart pivotal joints 25 and 26. The pivotal joints combine to influence the relationship of the roof engaging surfaces of the two members. In one embodiment for example, the roof engaging surfaces of the two roof engaging members may adopt either an angular or a parallel relationship with respect to one another, one surface lying at least partially below the adjacent surface. The arrangement enables the roof engaging structure to shape itself to various forms of mine roof, while preventing jack knifing of the forward end of the roof engaging structure.
摘要翻译： 用于矿山屋顶支撑件的屋顶接合结构包括至少两个相对可移动的屋顶接合构件21和23，其通过至少两个间隔开的枢转接头25和26联接在一起。枢转接头组合以影响屋顶的关系 两个构件的接合表面。 在一个实施例中，例如，两个屋顶接合构件的屋顶接合表面可以相对于彼此采用角度或平行关系，一个表面至少部分地位于相邻表面下方。 该布置使得屋顶接合结构能够将自身的形状自身形成为各种形式的矿顶，同时防止顶部接合结构的前端的千斤顶切割。
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公开(公告)号：US4269546A
公开(公告)日：1981-05-26
申请号：US31226
申请日：1979-06-04
申请人： Graham J. Saunders
发明人： Graham J. Saunders
CPC分类号： E21D23/066
摘要： The invention relates to mine working apparatus including a sprag plate 21. The sprag plate 21 is included in a sprag unit 20 that can be reciprocated in the fore-and-aft direction of the canopy and the sprag unit 20 includes a sprag slide 22 and a link system 43 and 61 that can be reciprocated in the fore-and-aft sense relatively to each other. There is a range of lost motion between the slide 22 and the link system and the means 48 for moving the sprag unit between the position in which the sprag plate 21 is operative and the position in which the sprag plate 21 is inoperative also moves the sprag slide and the link system relatively to each other through their range of lost motion and this relative movement swings the sprag plate 21 between a generally upright, operative, position and a generally horizontal, retracted, position.
摘要翻译： 本发明涉及包括楔形板21的矿山加工装置。楔形板21包括在能够在顶盖的前后方向上往复运动的楔形单元20中，并且楔形单元20包括楔形滑块22和 可以相对于彼此在前后方向上往复运动的连杆系统43和61。 在滑动件22和连杆系统之间存在一系列的失速运动，并且用于使楔形单元在其中操作滑动板21的位置与滑动板21不起作用的位置之间移动的装置48也使楔子 通过其运动范围相对于彼此滑动和连接系统，并且该相对运动在大致直立的，有效的位置和大致水平的缩回的位置之间使滑动板21摆动。
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公开(公告)号：US3991577A
公开(公告)日：1976-11-16
申请号：US658054
申请日：1976-02-13
申请人： Jean P. Thevenoux
发明人： Jean P. Thevenoux
IPC分类号： E21D17/00 , E21D17/05 , E21D17/082 , E21D15/14
CPC分类号： E21D17/082 , E21D17/003
摘要： This invention concerns a telescopic support cap, e.g. for mining, comprising a main beam element having a support end and an extensible end; a bar slidable relative to, and having one end slidingly connected to, the main element, the other, free end projecting beyond said extensible end; a crank connected at one end by a transverse pivot fixed on the main element at a short distance from the said support end, the other, free end of the crank being shaped for bearing on a timber prop, without other connection; and a hydraulic jack pivoted to the bar and to the crank intermediate the pivotal axis of the latter and its free end, such that the cap is buttressed on actuating the jack by the said free end and by the main element and the crank.
摘要翻译： 本发明涉及伸缩式支撑帽，例如 用于采矿，包括具有支撑端和可延伸端的主梁单元; 一个可相对滑动的杆，一端滑动地连接到主元件，另一个自由端突出超过所述可伸长端; 一个曲柄在一端由与所述支撑端短距离固定在所述主元件上的横向枢轴连接，所述曲柄的另一个自由端被成形为用于支撑在木材支架上而没有其它连接; 以及液压千斤顶，其枢转到杆和曲柄在中间的枢转轴线和其自由端之间，使得帽在由所述自由端以及主要元件和曲柄致动千斤顶时被支撑。
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9.发明授权Roof supporting arrangement including cantilevered roof bar carrying extensible roof supporting cap and cutter means 失效屋顶支撑装置，包括装有可扩展的屋顶支撑盖和切割器的檐篷
公开(公告)号：US3441317A
公开(公告)日：1969-04-29
申请号：US3441317D
申请日：1967-02-24
发明人： DOMMANN GUNTHER
CPC分类号： E21D17/0206 , E21C27/01 , E21D23/063
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