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公开(公告)号：US4900091A
公开(公告)日：1990-02-13
申请号：US243066
申请日：1988-09-09
IPC分类号： E21D23/20
CPC分类号： E21D23/20
摘要： A mining system comprises a laterally deflectable segmented conveyor extending longitudinally along a longitudinal face from which material is to be cut, a mining machine displaceable longitudinally along the conveyor and engageable with the face to cut material therefrom and deposit in the conveyor, and a longitudinal succession of support frames each having a respective actuator connected to a respective segment of the conveyor and each also having a respective a respective retractile roof-engaging flap. The process of this invention comprises bracing the frames and conveyor in a safety zone immediately adjacent the mining machine against the roof with their flaps retracted. The machine is advanced in the safety zone while cutting the face in the safety zone, and the flaps of the frames in a zone immediately downstream of the safety zone are sequentially retracted and the flaps of the frames in a zone upstream of the safety zone are sequentially advanced. The number of frames in the upstream and downstream zone is determined by the stability of the material of the mine roof. The conveyor segments are meanwhile pushed toward the face by extension of the actuators of the frames in a second zone immediately upstream of the upstream zone and the frames are themselves drawn toward the face by contraction of the actuators of the frames in a third zone immediately upstream from the second zone.
摘要翻译： 采矿系统包括横向可偏转的分段输送器，其沿着要从其中切割材料的纵向表面纵向延伸;采矿机器，其沿着输送机纵向移动并且可与所述面部接合以从其中切割材料并沉积在输送机中，并且纵向连续 每个支撑框架各自具有连接到输送机的相应部分的相应致动器，并且每个支撑框架还具有相应的可收回的屋顶接合翼片。 本发明的方法包括在与采矿机相邻的安全区域中将框架和输送机支撑在顶板上并使其翼片缩回。 在安全区切割面时，机器在安全区中前进，紧邻安全区下游的区域中的框架的翼片顺序地缩回，并且在安全区域上游的区域中的框架的翼片是 顺序先进。 上游和下游区域的框架数量由矿山屋顶材料的稳定性决定。 输送段同时通过在紧邻上游区上游的第二区域中的框架的致动器的延伸而朝向面部推动，并且框架本身通过在紧邻上游的第三区域中的框架的致动器的收缩而朝向面部 从第二个区。
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公开(公告)号：US4798417A
公开(公告)日：1989-01-17
申请号：US96678
申请日：1987-09-14
CPC分类号： E21D23/063
摘要： A method in underground coal mining for separating the upper coal of the seam from the roof during the advancement of the upper sliding cap of a support frame, wherein the front edge of the cap is forced in a plane of the cap between the upper coal to be separated and the rock from which the coal is to be separated. During the advancement of the sliding cap, the sliding cap is alternatingly moved backwardly and forwardly, so that the from edge of the sliding cap separates the upper coal during its forward movement. Alternatively or additionally, when the front edge of the sliding cap contacts the upper coal, alternatingly higher and lower pressure can be admitted to the sliding cap in order to obtain a shaking effect. In this combined method, the sliding cap is advanced, the shaking procedure is carried out as the front edge contacts the upper coal, and the sliding cap is subsequently moved backwardly. The cycle is then repeated several times.
摘要翻译： 一种地下采煤方法，用于在支撑框架的上滑动盖的前进过程中将接缝的上部煤层与屋顶分离，其中，盖的前边缘被迫在盖的平面中，在上煤到 与煤分离的岩石。 在滑盖的推进过程中，滑动盖向后和向前交替地移动，使得滑动盖的边缘在其向上运动期间分离上部煤。 或者或另外，当滑盖的前边缘接触上煤时，为了获得振动效果，可以向滑盖接收更高和更低的压力。 在这种组合方法中，滑动盖先进，当前边缘接触上部煤时，摇动过程被执行，滑动盖随后向后移动。 然后重复该循环数次。
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公开(公告)号：US4080794A
公开(公告)日：1978-03-28
申请号：US783338
申请日：1977-03-31
申请人： Gustav Neu
发明人： Gustav Neu
CPC分类号： E21D23/06 , E21D23/0034 , E21D23/04
摘要： A mine roof support for underground excavations includes a support adapted to engage the floor of the underground excavation, and a movable roof shield which engages the roof of the underground excavation. A movable rear shield is mounted on the support and is pivotally connected with the roof shield for relative movement thereto about a pivot axis. A pit prop arrangement is provided intermediate the shields and the support for moving the shields relative to each other about the pivot axis between a plurality of inclined positions in which the rear shield is inclined at different angles of inclination relative to the roof shield. A pair of abutment members are respectively provided on the shields for limiting relative movement of the latter beyond a predetermined one of the inclined positions in which the shields are inclined at a predetermined angle of inclination relative to each other.
摘要翻译： 用于地下挖掘的矿顶支架包括适于接合地下开挖地板的支撑件和与地下挖掘屋顶接合的活动屋顶护罩。 可移动的后挡板安装在支撑件上并与顶盖枢转连接，以便围绕枢转轴线相对运动。 在屏蔽件和支撑件之间设置凹坑支座装置，用于在多个倾斜位置之间围绕枢转轴线相对于彼此移动屏蔽件，其中后屏蔽件相对于屋顶屏蔽件以不同的倾斜角度倾斜。 一对抵靠构件分别设置在屏蔽件上，用于限制其相对于相对于彼此以预定的倾斜角倾斜的倾斜位置中的预定的一个的相对运动。
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公开(公告)号：US4094155A
公开(公告)日：1978-06-13
申请号：US760949
申请日：1977-01-21
CPC分类号： E21D23/04 , E21D23/0034
摘要： A mine roof support for an underground mine gallery comprises a sole plate adapted to rest on the floor of the mine gallery. The sole plate is connected by links to the region of the lower end of a rear shield, and the upper end of the latter is connected by pivot means to a roof shield, between opposite ends of the latter, in such a manner that a portion of the roof shield between the front end thereof and the pivoted means is considerably longer than the portion of the roof shield between the pivot means and the rear end of the roof shield. At least one extensible and collapsible prop extends between the sole plate and the portion of the roof shield which is located forwardly of the pivot means and at least one additional prop extends between the sole plate and the rear shield, so that the roof shield may be pressed against the roof of the mine gallery and be shifted relative to the mine face.
摘要翻译： 用于地下矿场的矿山屋顶支架包括一个适合放置在矿场的地板上的底板。 底板通过连杆连接到后屏蔽件的下端的区域，并且后板的上端通过枢转装置连接到顶盖的后端的相对端之间，使得一部分 在其前端和枢转装置之间的屋顶护罩的距离远大于在枢转装置和屋顶护罩的后端之间的屋顶护罩的部分。 至少一个可延伸和可折叠的支架在底板和位于枢转装置前方的屋顶护罩的部分之间延伸，并且至少一个附加支柱在底板和后挡板之间延伸，使得屋顶护罩可以 压在矿场的屋顶上，相对于矿井转移。
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公开(公告)号：US4065931A
公开(公告)日：1978-01-03
申请号：US794933
申请日：1977-05-09
申请人： Gustav Neu , Hans-Ferdinand Bemmerl
发明人： Gustav Neu , Hans-Ferdinand Bemmerl
CPC分类号： E21D23/081 , E21D23/0021 , E21D23/04
摘要： An underground excavating system includes a conveyor device which is operative for conveying material away from a mine face, and an excavation roof support device which is operative for supporting the roof of the excavation. A hydraulic cylinder-piston unit is operatively connected to both of the devices and is operative for advancing one of the devices towards the mine face while the other of the devices remains stationary, and vice versa. A guiding arrangement is connected intermediate the control unit and the conveyor device and is operative for guiding the advancing device during its advance towards the mine face. The guiding arrangement includes a pair of elongated support members which are spaced apart of each other and which have one end region located closer to the mine face and another end region located further from the mine face. The guide arrangement further includes a pair of guide sleeve members one at each of the aforementioned end regions. Each sleeve member has wall portions which bound a passage through which the end portions of the support members pass at a spacing relative to each other. The arrangement further includes a pair of insert members respectively connectable to the conveyor device and the control unit. Each insert member is located in a respective passage of the sleeve members and is received between the end portions of the support members for maintaining these end portions at the aforementioned spacing. The insert members and the support members are detachably connected to the sleeve members so as to permit rapid interchange of any of the members which are defective with a replacement member.
摘要翻译： 一种地下挖掘系统，其特征在于，包括：输送装置，用于输送材料远离矿面;以及挖掘屋顶支撑装置，其可操作用于支撑挖掘屋顶。 液压缸 - 活塞单元可操作地连接到这两个装置，并且可操作地将装置中的一个推进到矿井面，而另一个装置保持静止，反之亦然。 引导装置连接在控制单元和传送装置之间，并且可操作用于在推进装置向矿井面前进时引导。 引导装置包括彼此间隔开的一对细长的支撑构件，并且具有位于更靠近矿面的一个端部区域和位于更远离矿井面的另一端部区域。 引导装置还包括一对引导套筒构件，每个引导套筒构件在每个前述端部区域处一个。 每个套筒构件具有壁部分，该壁部分限定了一个通道，支撑构件的端部通过该通道以相对于彼此的间隔通过。 该装置还包括分别可连接到输送装置和控制单元的一对插入件。 每个插入构件位于套筒构件的相应通道中，并且被容纳在支撑构件的端部之间，用于将这些端部保持在上述间隔。 插入构件和支撑构件可拆卸地连接到套筒构件，以便允许与更换构件有缺陷的任何构件的快速交换。
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