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公开(公告)号：US20130187436A1
公开(公告)日：2013-07-25
申请号：US13818059
申请日：2012-03-19
CPC分类号： E21C27/20 , E21C35/24 , E21C41/18 , E21D23/0454 , E21D23/066 , E21D23/12 , E21D23/18
摘要： A coal caving system (1) including a plurality of shields (3) with canopies (6) which are selectively operated to allow coal to cave onto a rear conveyor (37). In one aspect, the invention provides a shield control method including controlling the shield (3) to automatically open a door (6) associated with a rear canopy of the shield (3) responsive to a position of a shearer of the system.
摘要翻译： 一种煤窑系统（1），其包括具有檐篷（6）的多个屏蔽件（3），所述檐板（6）被选择性地操作以允许煤塌陷到后部输送机（37）上。 一方面，本发明提供了一种屏蔽控制方法，其包括根据系统的采煤机的位置来控制屏蔽件（3）自动打开与护罩（3）的后罩相关联的门（6）。
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公开(公告)号：US4518284A
公开(公告)日：1985-05-21
申请号：US480614
申请日：1983-03-30
IPC分类号： E21D23/04
CPC分类号： E21D23/0454 , E21D23/0427 , E21D23/0481
摘要： A mine roof support has a goaf shield with a lemniscate guide system linking the shield to floor-engaging skids. A walking-mechanism is disposed in a channel between the floor skids. In order to prevent rubble or goaf material from penetrating into the channel the guides of the lemniscate system have connections which are spaced one above the other and to which one or several screen plates can be removably and replaceably attached with the aid of push-in locking-bars. The screen plates also advantageously serve to keep the floor skids apart by a minimum distance to prevent jamming of the walking mechanism.
摘要翻译： 矿山屋顶支架有一个防盗罩，带有一个完整的导向系统，将防护罩与地板接合的滑轨相连接。 行走机构设置在地板滑行板之间的通道中。 为了防止瓦砾或af材料渗透到通道中，精密系统的引导件具有彼此间隔开的连接，并且借助于推入锁定可以可拆卸地和可替换地附接一个或多个筛板 - 筛板还有利地用于将地板滑行物保持最小距离，以防止行走机构的卡住。
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公开(公告)号：US4480946A
公开(公告)日：1984-11-06
申请号：US312250
申请日：1981-10-19
申请人： Jay H. Kelley
发明人： Jay H. Kelley
CPC分类号： E21D23/0454
摘要： A support for the roof in longwall mining operations includes a gob canopy at the rear of a roof canopy. The gob canopy can move about a vertical pivot and a horizontal pivot by operation of a hydraulic actuator. To stabilize the support, the gob canopy moves into or out of contact with the roof at the rear of the roof canopy. The actuators can move the gob canopy to the left or right side of the roof canopy about a vertical pivot so that a skeg member on the upper surface of the gob canopy drags along the mine roof for steering the roof support when it is advanced toward the mine face. Gaps between the gob canopies of side-by-side roof supports function in the manner of grizzly bars to permit recovery of small pieces of gob roof rock.
摘要翻译： 在长壁采矿作业中对屋顶的支持包括屋顶顶部后部的料滴盖。 料滴盖可以通过液压致动器的操作围绕垂直枢轴和水平枢轴移动。 为了稳定支撑，料滴盖与屋顶后方的屋顶移动或脱离接触。 致动器可以将料滴顶盖移动到垂直枢轴的屋顶顶部的左侧或右侧，使得料滴顶盖的上表面上的一个料斗部件沿着矿山屋顶拖动，以在屋顶支撑件前进到 我的脸。 并排屋顶支架的料滴盖之间的差距以灰棒的方式起作用，以允许回收小块泥灰瓦屋顶岩石。
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公开(公告)号：US09068452B2
公开(公告)日：2015-06-30
申请号：US13818059
申请日：2012-03-19
CPC分类号： E21C27/20 , E21C35/24 , E21C41/18 , E21D23/0454 , E21D23/066 , E21D23/12 , E21D23/18
摘要： A coal caving system (1) including a plurality of shields (3) with canopies (6) which are selectively operated to allow coal to cave onto a rear conveyor (37). In one aspect, the invention provides a shield control method including controlling the shield (3) to automatically open a door (6) associated with a rear canopy of the shield (3) responsive to a position of a shearer of the system.
摘要翻译： 一种煤窑系统（1），其包括具有檐篷（6）的多个屏蔽件（3），所述檐板（6）被选择性地操作以允许煤塌陷到后部输送机（37）上。 一方面，本发明提供了一种屏蔽控制方法，其包括根据系统的采煤机的位置来控制屏蔽件（3）自动打开与护罩（3）的后罩相关联的门（6）。
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公开(公告)号：US4229043A
公开(公告)日：1980-10-21
申请号：US954155
申请日：1978-10-24
申请人： Roy L. Bell , James B. Garner , Douglas Salmon
发明人： Roy L. Bell , James B. Garner , Douglas Salmon
CPC分类号： E21D23/0454 , E21D19/02
摘要： A roll of wire mesh is supported on the rear of a cut mineral loading cowl of a rock or mineral winning machine. As the machine traverses along a path cut by the machine the wire mesh is paid out to retain or contain the roof material.
摘要翻译： 一卷丝网支撑在岩石或矿石机器的切割矿物加载整流罩的后部。 当机器沿着由机器切割的路径移动时，出金属网被保留或容纳屋顶材料。
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公开(公告)号：US3618325A
公开(公告)日：1971-11-09
申请号：US3618325D
申请日：1970-01-22
申请人： KLOECKNER WERKE AG
发明人： KUHN MAX , BELL GUNTER , WATERMANN WILLY
CPC分类号： E21D23/0454 , E21F15/04
摘要： A THREE FRAME ASSEMBLY FOR AN ADVANCING ROOF SUPPORT, EACH FRAME HAVING A PIT PROP AND A ROOF ENGAGING CAP. A SHIELD IS COMMON TO THE THREE FRAMES AND IS SECURED TO THE TWO OUTER FRAMES FOR MOVEMENT WITH THE SAME. THE SHIELD PREVENTS PACKING MATERIAL FROM ENTERING BETWEEN THE FRAMES AND IS CONTOURED FOR THIS PURPOSE. THE CENTER FRAME MAY ADVANCE AND SUBSEQUENTLY THE TWO END FRAMES TOGETHER WITH THE SHIELD ADVANCES. THE ROOF ENGAGING CAP FOR EACH FRAME INCLINES DOWNWARDLY AT AN ANGLE GENERALLY PARALLEL TO THE ANGLE OF REST OF THE PACKING MATERIAL.
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公开(公告)号：US4747729A
公开(公告)日：1988-05-31
申请号：US2248
申请日：1987-01-12
申请人： Ernst Urschitz
发明人： Ernst Urschitz
CPC分类号： E21D23/0454
摘要： The invention refers to a movable trestle of approximately rectangular horizontal projection and serving the purpose of supporting the roof in underground cavities in particular serving the purpose of securing the excavation edge when recovering pillars in coal mining, comprising a cap (2) supported against a base frame (1) by hydraulically extensible props extending approximately in vertical direction to stratification. The lower portion of the trestle is, preferably at all sides, covered by a stationary shielding means against the ingress of rubble into its interior and horizontal protective plates (3) overlapping one another in a scale-like manner and being guided on sliding plates (8) for relative shifting movement in height direction are provided within the area of the expandable portion of the trestle. The protective plates (3) are arranged on the rear side (12) of the trestle and on the both sides (10, 11) adjoining the rear side of the trestle. The protective plates (3) extend over the whole width of the trestle and are guided and held at their ends by means of sliding plates. The respective upper protective plate overlaps the respective associated lower protective plate at its outer side. In this manner, it is possible to support in coal mining, in particular when recovering pillars, the excavated material of the mine face and the excavated material of the recovered pillars and to move the trestle in forward direction by means of the caterpillars (18) when having finished the work.
摘要翻译： 本发明涉及一种近似矩形的水平投影的可移动支架，其目的在于将屋顶支撑在地下空腔中，特别是用于在采煤中收回柱子时确保挖掘边缘的目的，包括一个支撑在基座 框架（1）通过大致垂直方向延伸到分层的液压可伸展道具。 支架的下部优选地在所有侧面被固定的屏蔽装置覆盖，以防止瓦砾进入其内部，并且水平保护板（3）以鳞片状的方式彼此重叠并且在滑动板上被引导（ 8）用于在高度方向上的相对移动运动设置在支架的可扩张部分的区域内。 保护板（3）布置在支架的后侧（12）上并且与支架的后侧相邻的两侧（10,11）上。 保护板（3）在支架的整个宽度上延伸，并通过滑板引导并保持在其端部。 相应的上保护板在其外侧与相应的相关联的下保护板重叠。 以这种方式，可以支持煤矿开采，特别是在回收支柱时，矿井的挖掘材料和回收柱的挖掘材料，并通过毛虫（18）向前移动支架， 完成工作后。
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公开(公告)号：US4183700A
公开(公告)日：1980-01-15
申请号：US948324
申请日：1978-10-04
CPC分类号： E21D23/0454 , E21D23/0091
摘要： A walking mine support includes a roadway support unit and a face-gallery support unit laterally of the same. The two units are linked by one or more four-pivot couplings whose members can tilt both lengthwise and transversely of the elongation of the roadway and permit walking movements of the units with reference to one another without interfering with proper support of either the roadway or the face-gallery.
摘要翻译： 一个步行矿山支架包括一个道路支撑单元和一个侧面支撑单元。 两个单元通过一个或多个四枢轴联轴器连接，其构件可以纵向和横向地倾斜巷道的伸长并且允许单元相对于彼此的步行移动，而不妨碍道路或者道路的适当支撑 面对画廊。
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公开(公告)号：US3564857A
公开(公告)日：1971-02-23
申请号：US3564857D
申请日：1969-10-02
CPC分类号： E21D23/0034 , E21D23/0454 , E21D23/081 , E21F15/02
摘要： AN APPARATUS FOR PROTECTING UNDERGROUND EXCAVATIONS AGAINST COLLAPSE INCLUDES ROOF SUPPORT MEANS, ADVANCING MEANS WHICH ADVANCES LONGITUDINALLY ALONG THE FLOOR OF THE RESPECTIVE EXCAVATION, AND CONNECTING ARANGEMENTS WHICH CONNECT THE ROOF SUPPORT MEANS WITH THE ADVANCING MEANS FOR MOVEMENT OF THE LATTER. UPRIGHT SHIELD MEANS IS ARRANGES SO AS TO TRAIL THE ROOF SUPPORT AND ADVANCING MEANS AND EXTENDS TRANSVERSELY OF THE DIRECTION OF MOVEMENT THEREOF. THE SHIELD MEANS HAS AN UPPER AND A LOWER END PORTION. AT LEAST TWO CYLINDER AND PISTON MEANS ARE PROVIDED EACH HAVING ONE END CONNECTED TO THE ADVANCING MEANS AND ANOTHER END ARTICULATELY CONNECTED TO THE SHIELD MEANS AT THE UPPER AND LOWER END PORTIONS THEREOF. RESPECTIVELY.
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公开(公告)号：US3474627A
公开(公告)日：1969-10-28
申请号：US3474627D
申请日：1968-10-07
申请人： GROETSCHEL KARL M
发明人： GROETSCHEL KARL M
CPC分类号： E21D23/0454
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