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公开(公告)号：US5785463A
公开(公告)日：1998-07-28
申请号：US584977
申请日：1996-01-11
CPC分类号： E21D21/008 , E21D20/025 , E21D21/006 , E21D21/0093
摘要： A tensionable combination cable mine roof bolt is disclosed for use in resin grouted applications. The mine roof bolt includes a rod member having a rotatable bolt head at a first end thereof supporting a bearing plate and a threaded second end spaced from the first end. A coupling threadingly receives the rod member therein. A shearable stop device, such as a shear pin, is positioned within the coupling and adapted to stop the threaded rod member at a first position for rotation of the cable mine roof bolt during installation. After an upper portion of the cable mine roof bolt is secured, the shearable stop mechanism is subsequently sheared by the rod member to allow for tensioning of the cable mine roof bolt. A flexible multi-strand cable is coupled to the coupling device and forms the attachment point for the cable mine roof bolt.
摘要翻译： 公开了一种用于树脂灌浆应用的可拉伸组合电缆矿井屋顶螺栓。 矿山屋顶螺栓包括一个杆构件，该杆构件在其第一端处具有可旋转的螺栓头部，该第一端部支撑承载板和与该第一端部间隔开的带螺纹的第二端。 联接器在其中螺纹地接收杆构件。 诸如剪切销的可剪切止动装置定位在联接器内，并且适于在安装期间将螺纹杆构件停止在第一位置以旋转电缆矿井顶部螺栓。 在电缆矿井顶部螺栓的上部被固定之后，可剪切的止动机构随后被杆构件剪切以允许电缆矿井屋顶螺栓的张紧。 柔性多股电缆耦合到联接装置，并形成电缆矿井屋顶螺栓的连接点。
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公开(公告)号：US5954455A
公开(公告)日：1999-09-21
申请号：US848398
申请日：1997-05-08
CPC分类号： E21D21/008 , E21D20/025 , E21D21/006 , E21D21/0093
摘要： A tensionable combination mine roof bolt is disclosed for use in resin grouted applications. The mine roof bolt includes a lower rod member having a rotatable bolt head at a first end thereof supporting a bearing plate and a threaded second end spaced from the first end. A coupling threadingly receives the lower rod member therein. A shearable stop device, such as a shear pin, is positioned within the coupling and adapted to stop the threaded lower rod member at a first position for rotation of the cable mine roof bolt during installation. After an upper portion of the cable mine roof bolt is secured, the shearable stop mechanism is subsequently sheared by the lower rod member to allow for tensioning of the cable mine roof bolt. A flexible multi-strand cable is coupled to the coupling device and forms the attachment point for the cable mine roof bolt.
摘要翻译： 公开了一种用于树脂灌浆应用的可拉紧组合的矿山屋顶螺栓。 矿井顶部螺栓包括下杆构件，其在其第一端处具有可旋转的螺栓头，其支撑轴承板和与第一端间隔开的带螺纹的第二端。 联接器在其中螺纹地接收下杆构件。 诸如剪切销的可剪切的止动装置被定位在联接器内，并且适于在螺纹的下杆构件在第一位置处停止以在安装期间旋转缆索矿顶顶螺栓。 在电缆矿井顶部螺栓的上部被固定之后，可剪切的止动机构随后由下杆构件剪切，以允许缆索矿井顶部螺栓的张紧。 柔性多股电缆耦合到联接装置，并形成电缆矿井屋顶螺栓的连接点。
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公开(公告)号：US07284933B2
公开(公告)日：2007-10-23
申请号：US10457840
申请日：2003-06-09
IPC分类号： E02D29/045
CPC分类号： E21D11/155 , E21D21/0086 , Y10T428/24653
摘要： Disclosed is a mine roof and rib support system generally including a square bearing plate. A through hole is positioned near a center portion of the square bearing plate. A peripheral section at least partially circumscribes the bearing plate. In between the through hole and the peripheral section is a rib member area. The rib member area may include two rib members with a convex cross-section connected by a substantially linear surface member disposed between the two rib members, two or more concave ribs with a substantially linear surface member disposed between the two rib members, or two substantially linear surfaces connected by a convex rib member. A safety edge surrounds the square bearing plate. The safety edge may be a rolled edge, a looped edge, a folded edge, or another comparable edge. Also disclosed is a method for making the mine roof and rib support system.
摘要翻译： 公开了一种通常包括方形轴承板的矿井屋顶和肋支撑系统。 通孔位于方形轴承板的中心部分附近。 外围部分至少部分地包围支承板。 在通孔和周边部分之间是肋构件区域。 肋构件区域可以包括两个肋构件，其具有通过布置在两个肋构件之间的基本线性的表面构件连接的凸形横截面，两个或更多个凹肋，其具有设置在两个肋构件之间的基本线性的表面构件， 通过凸肋构件连接的线性表面。 安全边缘围绕方形轴承板。 安全边缘可以是卷边，环形边缘，折叠边缘或另一相当的边缘。 还公开了一种用于制造矿顶和肋支撑系统的方法。
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公开(公告)号：US06599059B2
公开(公告)日：2003-07-29
申请号：US09825798
申请日：2001-04-04
IPC分类号： E21D2100
CPC分类号： E21D21/008
摘要： An expansion assembly configured to be attached to a mine roof bolt, wherein the expansion assembly may include a plug defining an interior cavity and an outer surface and an expansion shell having a plurality of spaced-apart prongs, preferably three prongs, and defining a plurality of shell grooves, wherein each of the spaced-apart prongs is oriented diametrically opposed to a corresponding shell groove.
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