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公开(公告)号：US20140077580A1
公开(公告)日：2014-03-20
申请号：US14087839
申请日：2013-11-22
发明人： John Holme
IPC分类号： E21D23/00
CPC分类号： E21D23/0043 , E21D23/0017 , E21D23/03 , E21D23/082
摘要： A longwall mining system includes at least one face end roof support having a longitudinal length, and at least one near end roof support adjacent the face end roof support. The near end roof support has a longitudinal length substantially shorter than the face end roof support longitudinal length. There is also at least one face roof support adjacent the near end roof support, and the face roof support has a longitudinal length substantially shorter than the near end roof support longitudinal length. There is also a forward conveyor extending forward to and attached to the face end roof support, the at least one near end roof support, and the at least one face roof support, and a rearward conveyor extending rearward of and attached to the face end roof support, the at least one near end roof support, and the at least one face roof support. This creates an effective cave line at an angle to the coal face, that helps reduce the goaf pressure on the face end, thereby increasing the stability of the main gate roof support.
摘要翻译： 长壁采矿系统包括具有纵向长度的至少一个面端屋顶支撑件和邻近面端屋顶支撑件的至少一个近端屋顶支撑件。 近端屋顶支撑件的纵向长度基本上比端面顶部支撑件纵向长度短。 还有邻近近端屋顶支撑件的至少一个面屋顶支撑件，并且面屋顶支撑件的纵向长度基本上比近端屋顶支撑件纵向长度短。 还有一个向前传送器，其向前延伸并连接到面端屋顶支撑件，至少一个近端屋顶支撑件和至少一个面屋顶支撑件，以及向后传送器，其向后延伸并附接到面端屋顶 支撑件，至少一个近端屋顶支撑件和至少一个面屋顶支撑件。 这就形成了与煤面成一定角度的有效的洞穴线，这有助于降低面端的压力，从而提高主门屋顶支撑的稳定性。
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公开(公告)号：US2795935A
公开(公告)日：1957-06-18
申请号：US31218452
申请日：1952-09-30
申请人： JOY MFG CO
发明人： FITZGERALD CHARLES W
CPC分类号： E21D23/082 , E21D23/0095
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3.发明授权
公开(公告)号：US4065929A
公开(公告)日：1978-01-03
申请号：US664437
申请日：1976-03-08
申请人： Terry Lee Simpson
发明人： Terry Lee Simpson
CPC分类号： E21D23/03 , E21D23/0017 , E21D23/082
摘要： A bi-directional shearing machine mines a longwall face at the bottom of a thick mineral seam in a retreat operation under the protection of a row of adjacent powered roof supports each of which extends in a direction transverse to the solid face. Progressive advance of these roof supports allows the overlying mineral strata to cave. Each roof support is separated into articulated forward and aft units provided with separate sets of hydraulic props and having their solid canopies interfitted in end-to-end relation. The bases of the two units are interconnected with a push-pull hydraulic ram which enables relative longitudinal movement between the two units so that they may be advanced independently along a common axis toward the solid longwall face as the work progresses. During the advance of the forward units to provide face support, plowing and loading of caved mineral on the gob side may proceed without interruption. To accelerate caving, the aft units are independently advanced with an attached gob side chain conveyor and gob plow retracted beneath their canopies for protection. Starting from this retracted position, the gob conveyor and gob plow are allowed to load gradually out into the flushed coal.
摘要翻译： 双向剪切机在一个相邻的动力屋顶支撑的保护下，在一个后退操作中，在一个厚厚的矿物接缝的底部开采一个长壁面，每个相邻的动力屋顶支撑沿垂直于实心面的方向延伸。 这些屋顶支撑的进步使得上层的矿物层可以洞穴。 每个屋顶支撑分离成铰接的前后单元，其具有单独的液压道具套件，并且具有以端对端关系相互配合的固体檐篷。 两个单元的基座与推拉液压柱塞相互连接，其能够在两个单元之间进行相对的纵向运动，使得当工作进行时，它们可以沿公共轴线独立地朝向实心长壁面前进。 在前进单位提前提供面部支撑的情况下，可以在不间断的情况下进行在料滴侧犁耕和装载塌陷矿物。 为了加速塌陷，尾部单元独立地前进，附着的料滴侧链式输送机和在它们的檐篷下方的料滴犁保护。 从该缩回位置开始，允许料滴输送机和料滴犁逐渐加载到冲洗的煤中。
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公开(公告)号：US3397544A
公开(公告)日：1968-08-20
申请号：US53276266
申请日：1966-03-08
发明人： FRANZ GOLLA , WILLY WATERMANN , WALTER WEIRICH
CPC分类号： E21D23/082 , E21D23/0052 , E21D23/0418
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公开(公告)号：US08590982B2
公开(公告)日：2013-11-26
申请号：US12833291
申请日：2010-07-09
申请人： John Holme
发明人： John Holme
CPC分类号： E21D23/0043 , E21D23/0017 , E21D23/03 , E21D23/082
摘要： A longwall mining system includes at least one face end roof support having a longitudinal length, and at least one near end roof support adjacent the face end roof support. The near end roof support has a longitudinal length substantially shorter than the face end roof support longitudinal length. There is also at least one face roof support adjacent the near end roof support, and the face roof support has a longitudinal length substantially shorter than the near end roof support longitudinal length. There is also a forward conveyor extending forward to and attached to the face end roof support, the at least one near end roof support, and the at least one face roof support, and a rearward conveyor extending rearward of and attached to the face end roof support, the at least one near end roof support, and the at least one face roof support. This creates an effective cave line at an angle to the coal face, that helps reduce the goaf pressure on the face end, thereby increasing the stability of the main gate roof support.
摘要翻译： 长壁采矿系统包括具有纵向长度的至少一个面端屋顶支撑件和邻近面端屋顶支撑件的至少一个近端屋顶支撑件。 近端屋顶支撑件的纵向长度基本上比端面顶部支撑件纵向长度短。 还有邻近近端屋顶支撑件的至少一个面屋顶支撑件，并且面屋顶支撑件的纵向长度基本上比近端屋顶支撑件纵向长度短。 还有一个向前传送器，其向前延伸并连接到面端屋顶支撑件，至少一个近端屋顶支撑件和至少一个面屋顶支撑件，以及向后传送器，其向后延伸并附接到面端屋顶 支撑件，至少一个近端屋顶支撑件和至少一个面屋顶支撑件。 这就形成了与煤面成一定角度的有效的洞穴线，这有助于降低面端的压力，从而提高主门屋顶支撑的稳定性。
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公开(公告)号：US3813886A
公开(公告)日：1974-06-04
申请号：US32061973
申请日：1973-01-02
申请人： ALACCHI G
发明人： ALACCHI G
CPC分类号： E21D23/082
摘要： A travelling shoring apparatus for inclined strata comprises two sets of shoes, one of which is situated on the working face and the other is situated on the side of the filling material, each shoe in a set being connected to a corresponding shoe of the other set by means of two double-acting shift rams 13, 14 fixed to the coupled shoes by means of universal joints 15 which determine, before and after shifting, a parallelogram 18, and by a connecting ram 16, the axis of which substantially coincides with the small diagonal of parallelogram 18. This shoring is used in particular for exploitation of inclined strata.
摘要翻译： 用于倾斜地层的移动支撑装置包括两组鞋，其中一组位于工作面上，另一个位于填充材料的侧面，每个鞋组中的每个鞋与另一组的相应鞋连接 通过两个通过万向接头15固定到联接的鞋子上的双作用式移动柱塞13,14，它们在移动之前和之后确定平行四边形18，并且通过连接柱塞16，其轴线基本上与 平行四边形的小对角线18.这种支柱特别用于开采倾斜地层。
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公开(公告)号：US3115754A
公开(公告)日：1963-12-31
申请号：US78855159
申请日：1959-01-23
发明人： JOSEPH HAZEL V
CPC分类号： E21D23/0095 , E21D19/04 , E21D23/082
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公开(公告)号：US09670777B2
公开(公告)日：2017-06-06
申请号：US14087839
申请日：2013-11-22
发明人： John Holme
IPC分类号： E21D23/00
CPC分类号： E21D23/0043 , E21D23/0017 , E21D23/03 , E21D23/082
摘要： A longwall mining system includes at least one face end roof support having a longitudinal length, and at least one near end roof support adjacent the face end roof support. The near end roof support has a longitudinal length substantially shorter than the face end roof support longitudinal length. There is also at least one face roof support adjacent the near end roof support, and the face roof support has a longitudinal length substantially shorter than the near end roof support longitudinal length. There is also a forward conveyor extending forward to and attached to the face end roof support, the at least one near end roof support, and the at least one face roof support, and a rearward conveyor extending rearward of and attached to the face end roof support, the at least one near end roof support, and the at least one face roof support. This creates an effective cave line at an angle to the coal face, that helps reduce the goaf pressure on the face end, thereby increasing the stability of the main gate roof support.
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公开(公告)号：US20110006586A1
公开(公告)日：2011-01-13
申请号：US12833291
申请日：2010-07-09
申请人： John Holme
发明人： John Holme
CPC分类号： E21D23/0043 , E21D23/0017 , E21D23/03 , E21D23/082
摘要： A longwall mining system includes at least one face end roof support having a longitudinal length, and at least one near end roof support adjacent the face end roof support. The near end roof support has a longitudinal length substantially shorter than the face end roof support longitudinal length. There is also at least one face roof support adjacent the near end roof support, and the face roof support has a longitudinal length substantially shorter than the near end roof support longitudinal length. There is also a forward conveyor extending forward to and attached to the face end roof support, the at least one near end roof support, and the at least one face roof support, and a rearward conveyor extending rearward of and attached to the face end roof support, the at least one near end roof support, and the at least one face roof support. This creates an effective cave line at an angle to the coal face, that helps reduce the goaf pressure on the face end, thereby increasing the stability of the main gate roof support.
摘要翻译： 长壁采矿系统包括具有纵向长度的至少一个面端屋顶支撑件和邻近面端屋顶支撑件的至少一个近端屋顶支撑件。 近端屋顶支撑件的纵向长度基本上比端面顶部支撑件纵向长度短。 还有邻近近端屋顶支撑件的至少一个面屋顶支撑件，并且面屋顶支撑件的纵向长度基本上比近端屋顶支撑件纵向长度短。 还有一个向前传送器，其向前延伸并连接到面端屋顶支撑件，至少一个近端屋顶支撑件和至少一个面屋顶支撑件，以及向后传送器，其向后延伸并附接到面端屋顶 支撑件，至少一个近端屋顶支撑件和至少一个面屋顶支撑件。 这就形成了与煤面成一定角度的有效的洞穴线，这有助于降低面端的压力，从而提高主门屋顶支撑的稳定性。
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公开(公告)号：US4242014A
公开(公告)日：1980-12-30
申请号：US7796
申请日：1979-01-30
申请人： Lubomir Plevak , Jurgen Dodt
发明人： Lubomir Plevak , Jurgen Dodt
IPC分类号： E21D23/08
CPC分类号： E21D23/082 , Y10T403/32893 , Y10T403/7015
摘要： A releasable pivot joint for use in underground mining installations comprises first and second connecting members. The first connection member has a width which is greater than its thickness and a reduced portion that reduces its width to a core width. The second connection member is formed with a slot into which is inserted the reduced portion of the first connection member. The width of the slot is greater than the thickness and the core width of the first connection member. The length of the slot is greater than the width of the first connection member. The thickness of the second connection member is smaller than the core width of the first connection member. The width of the first connection member extends transversely of the length of the slot when the connection members are in the connected position.
摘要翻译： 用于地下采矿设备的可释放枢轴接头包括第一和第二连接构件。 第一连接构件具有大于其厚度的宽度和将其宽度减小到芯宽度的减小部分。 第二连接构件形成有狭槽，插入第一连接构件的缩小部分。 槽的宽度大于第一连接构件的厚度和芯宽度。 槽的长度大于第一连接件的宽度。 第二连接构件的厚度小于第一连接构件的芯宽度。 当连接构件处于连接位置时，第一连接构件的宽度横向于槽的长度延伸。
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