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公开(公告)号：US20210270134A1
公开(公告)日：2021-09-02
申请号：US17257239
申请日：2018-10-29
发明人： Nong ZHANG , Zhengzheng XIE , Qun WEI , Junyao ZHOU
摘要： A method for operating a continuous mining machine having a device continuously providing provisional roof support, wherein the mining machine a rolling roof-protection portion which is fixed on a main machine frame of the continuous mining machine via a front column structure and a rear column structure. While the machine is cutting, the roof-protection device performs continuous load holding on a roof, and after cutting, performs support operations, thereby achieving simultaneous performance of cutting and support operations, and improving tunneling efficiency. Different support strengths are configured according to the hardness, completeness, and quality indicators of rock on a mine roof, such that the device is able to effectively support the roof.
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公开(公告)号：US10767481B2
公开(公告)日：2020-09-08
申请号：US16521254
申请日：2019-07-24
摘要： A self-advancing roof support for a longwall mining system includes a base, a hydraulic actuator having one end pivotally coupled to the base, and a canopy portion that is connected to another end of the hydraulic actuator. The roof support also includes a load sensor disposed on the canopy portion. The load sensor generates a signal indicative of an amount of load borne by the canopy portion in abutment with a roof of an underground mine site. A controller is communicably coupled to the load sensor and the hydraulic actuator. The controller determines if the signal from the load sensor is suggestive of a cavity adjacent to a zone above the canopy portion. Based on the determination, the controller actuates movement of the hydraulic actuator such that the canopy portion is displaced into a position underlying the cavity.
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公开(公告)号：US10557348B2
公开(公告)日：2020-02-11
申请号：US15517183
申请日：2015-10-02
发明人： Thomas Galler , Martin Kupper
IPC分类号： E21D20/00 , E21C35/06 , E21C35/20 , E21D9/12 , E21C27/24 , E21D9/10 , E21C25/18 , E21C29/22 , E21C25/06 , E21C35/08 , E21D23/08 , F16H57/023 , F15B11/16
摘要： A device for the installation of rock bolts includes a supporting structure and first and second bolting units mounted to the supporting structure. Each bolting unit is configured for drilling an installation hole and/or for installing a rock bolt into a rock face, wherein the supporting structure is configured for rotatably moving the first and second bolting units about a common axis of rotation. At least one actuator is mounted to the supporting structure and configured for additionally moving at least one of the first and second bolting units.
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公开(公告)号：US10240458B2
公开(公告)日：2019-03-26
申请号：US15307109
申请日：2015-04-28
IPC分类号： E21D15/55 , E21D23/00 , E21D23/08 , E21D23/16 , E21D15/18 , E04G25/04 , E21D15/16 , E21D15/48
摘要： A grout tillable prop assembly for supporting a ceiling such as the ceiling of an underground mine. The prop assembly comprising an inner member and an outer member adapted for movement between an extended use configuration and a retracted configuration, a unidirectional grout inlet in an upper part of a sidewall of the outer member to allow grout to pass into the prop, the inner member and the outer member having wall portions and being self-supporting, an air conduit through the prop having an opening adjacent an upper limit of the prop, a pressure relief valve coupled to the air conduit whereby the prop is be brought from the retracted configuration to the extended configuration by application of pressurized air through the air conduit and whereby the extended prop is filled with grout via the unidirectional grout inlet.
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5.发明授权Hydraulic control arrangement for a roof support unit of a mineral mining installation 失效矿物采矿设备屋顶支撑单元的液压控制装置
公开(公告)号：US4440522A
公开(公告)日：1984-04-03
申请号：US217968
申请日：1980-12-19
申请人： Michael Dettmers , Walter Weirich
发明人： Michael Dettmers , Walter Weirich
CPC分类号： E21D23/16 , E21D23/063 , E21D23/08
摘要： A roof support unit for a longwall mineral mining installation has a roof shield supported above a floor sill. A first hydraulic ram is provided for advancing the roof support unit. The roof shield is provided with a forward extension which is advanceable by means of a second hydraulic advance ram. A hydraulic control arrangement, which includes the two hydraulic advance rams is provided for controlling the advance of the roof shield extension in dependence upon the working stroke of the first hydraulic advance ram. The control arrangement is such that the amount of hydraulic fluid supplied to one of the pressure chambers of the second hydraulic advance ram is dependent upon the amount of hydraulic fluid expelled from one of the pressure chambers of the first hydraulic advance ram during the working stroke of the first hydraulic advance ram.
摘要翻译： 用于长壁矿物开采装置的屋顶支撑单元具有支撑在地板上方的屋顶护罩。 提供第一液压柱塞用于推进屋顶支撑单元。 屋顶护罩设置有可通过第二液压前进柱塞前进的向前延伸部。 提供了包括两个液压前进柱塞的液压控制装置，用于根据第一液压前进柱塞的工作行程来控制屋顶屏蔽延伸部的前进。 控制装置是这样的：供应到第二液压前进压头的一个压力室的液压流体的量取决于在工作冲程期间从第一液压前进压头的一个压力室排出的液压流体的量 第一液压推进柱塞。
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公开(公告)号：US4380410A
公开(公告)日：1983-04-19
申请号：US243432
申请日：1981-03-13
申请人： Hans Bull , Gerhard Ewich , Gunther Kuschke , Alfred Maykemper , Josef Welzel
发明人： Hans Bull , Gerhard Ewich , Gunther Kuschke , Alfred Maykemper , Josef Welzel
CPC分类号： E21D23/083 , E21D23/0409
摘要： A self-advancing mine roof support has a beam-like abutment adapted to be disposed generally adjacent and parallel to a work face. Three roof support elements are spaced apart along the abutment and are pivoted to the abutment. The abutment may be angled relative to the direction of advance by arranging the three support elements in staggered formation. A beam of the central support element is pivoted to the abutment. The two outer roof support elements are connected to the abutment by a linkage, e.g., guide arms, which allows the abutment to pivot about the beam of the central element without changing the distance between the three elements as measured at right angles to the direction of advance.
摘要翻译： 自推进的矿顶支架具有适于大致相邻并平行于工作面设置的梁状基台。 三个屋顶支撑元件沿着邻接件间隔开并且枢转到支座。 通过将三个支撑元件布置成交错的构造，邻接件可以相对于前进方向成角度。 中心支撑元件的梁枢转到支座。 两个外部屋顶支撑元件通过联动装置（例如导向臂）连接到邻接件，该导向臂允许邻接件围绕中心元件的梁枢转，而不改变三个元件之间的距离，如在与 提前。
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公开(公告)号：US4187042A
公开(公告)日：1980-02-05
申请号：US945380
申请日：1978-09-25
申请人： Lubomir Plevak , Jurgen Dodt
发明人： Lubomir Plevak , Jurgen Dodt
CPC分类号： E21D23/085 , C02F1/36
摘要： The invention relates to an advance mechanism for a roof support unit to be used in a longwall face of a mineral mining working. The advance mechanism comprises a hydraulic advance ram and guide means constituted by a guide rod means and a guide rail. One end of the guide rod means is attached to a conveyor extending along the longwall face, the other end of the guide rod means being attached to a guide element. The guide rail extends slidably through a guide aperture in the guide element and is pivotally attached to the floor sill of the roof support unit for pivotal movement in a vertical plane perpendicular to the longwall face. The hydraulic advance ram is attached to the guide element and acts on a member fixed to the floor sill.
摘要翻译： 本发明涉及一种用于矿物开采工作的长壁面中的屋顶支撑单元的推进机构。 前进机构包括由导杆装置和导轨构成的液压前进推杆和导向装置。 导杆装置的一端连接到沿着长壁面延伸的传送器，导杆装置的另一端附接到导向元件。 导轨可滑动地延伸穿过引导元件中的引导孔，并且枢转地附接到屋顶支撑单元的底板，用于在垂直于长壁面的垂直平面中枢转运动。 液压前进推杆连接到引导元件上，并作用在固定在地板上的构件上。
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公开(公告)号：US4082360A
公开(公告)日：1978-04-04
申请号：US698885
申请日：1976-06-23
CPC分类号： E21D23/085 , E21D23/0445
摘要： An articulated ancillary support for a conveyor is attached onto the forward side of a mine roof chock by extensible means which, when retracted towards the chock, shifts the ancillary support from a normal condition in which it occupies an area of relatively wide lateral extent to another condition in which it overlies an area of relatively narrow lateral extent, freeing a large portion of the space under the chocks to clear the way for a retreating continuous miner.
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公开(公告)号：US3991580A
公开(公告)日：1976-11-16
申请号：US608675
申请日：1975-08-28
CPC分类号： E21D23/085
摘要： A self-advancing mine roof support of which the ground-engaging structure comprises a pair of spaced apart skids in the spacing between which the relay bar structure of the advancing mechanism is housed, such structure being powered by a pair of pressure-fluid operated rams disposed one adjacent each of said two skids.
摘要翻译： 一种自行进的矿顶支撑件，其中地面接合结构包括一对间隔开的滑动件，间隔开的前进机构的中继杆结构容纳在该间隙中，这种结构由一对压力流体操作的公柱 设置在所述两个滑轨中的每一个上。
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公开(公告)号：US3890793A
公开(公告)日：1975-06-24
申请号：US51006474
申请日：1974-09-27
申请人： RHEINSTAHL AG
CPC分类号： E21D23/085
摘要： An advancing support system which is adapted to follow the dip of a longwall in an underground mine operation, comprises an abutment made up of a plurality of individual beams which are arranged in end-to-end axial alignment along the length of the longwall, and which are pivotally connected together in a manner so that they may pivot substantially only in one plane, perpendicular to the footwall. A support unit is associated with each individual beam, and each support unit carries a piston and cylinder combination connected to the individual beam, for shifting the beam relative to the longwall.
摘要翻译： 一种前进的支撑系统，其适于沿着地下矿井操作中的长壁倾斜，包括由沿着长壁的长度方向以端对端轴向对准布置的多个单独的梁构成的基台，以及 它们以使得它们可以基本上仅在垂直于底壁的一个平面中枢转地枢转地连接在一起。 支撑单元与每个单独的梁相关联，并且每个支撑单元承载连接到单个梁的活塞和气缸组合，用于相对于长壁移动梁。
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