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公开(公告)号：US4865489A
公开(公告)日：1989-09-12
申请号：US229699
申请日：1988-08-08
CPC分类号： E21D21/0093 , E21D20/02
摘要： A roof anchor for supporting an underground mine roof or the like is provided. The roof anchor has an elongated shaft with a head formed at one end. The head supports a washer and a roof supporting plate that surrounds the mouth of a blind bore formed upwardly into the roof. A resin capsule is positioned within the blind bore above the roof anchor. The shaft of the roof anchor has an adjustably securable annular washer surrounding the shaft. The annular washer is fixed in a position so that when the resin capsule is ruptured to release the resin to blind the roof anchor within the bore hole, the resin completely fills the bore hole from the blind end of the bore to the rigid annular washer fixed to the shaft of the roof anchor. By making the position of the annular washer axially adjustable, the roof anchor may be utilized with varying amounts of resin as conditions at the mine site require and still cause the resin to be subjected to a compressive force within the bore hole in the space between the end of the bore hole and the annular washer.
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公开(公告)号：US5181800A
公开(公告)日：1993-01-26
申请号：US813943
申请日：1991-12-24
CPC分类号： E21D21/0093 , E21D20/02
摘要： A roof anchor for supporting an underground mine roof or the like is provided. The roof anchor has an elongated shaft with a head formed at one end. The head supports a washer and a roof supporting plate that surrounds the mouth of a blind bore formed upwardly into the roof. A resin capsule is positioned within the blind bore above the roof anchor. The shaft of the roof anchor has an adjustably securable annular washer surrounding the shaft. The annular washer is fixed in a position so that when the resin capsule is ruptured to release the resin to bind the roof anchor within the bore hole, the resin completely fills the bore hole from the blind end of the bore to the rigid annular washer fixed to the shaft of the roof anchor. By making the position of the annular washer axially adjustable, the roof anchor may be utilized with varying amounts of resin as conditions at the mine site require and still cause the resin to be subjected to a compressive force within the bore hole in the space between the end of the bore hole and the annular washer.
摘要翻译： 提供了用于支撑地下矿井屋顶等的屋顶锚。 屋顶锚具有细长轴，其一端形成有头部。 头部支撑围绕向上形成屋顶的盲孔的口的垫圈和屋顶支撑板。 树脂胶囊位于屋顶锚固件上方的盲孔内。 屋顶锚的轴具有围绕轴的可调整的可固定的环形垫圈。 环形垫圈被固定在这样的位置，使得当树脂胶囊破裂以释放树脂以将屋顶锚固件结合在钻孔内时，树脂完全将钻孔从孔的盲端填充到固定的刚性环形垫圈 到屋顶锚的轴。 通过使得环形垫圈的位置可轴向调节，可以利用不同数量的树脂来使用屋顶锚固件，因为矿场所处的状况需要，并且仍然导致树脂经受在孔内的压缩力 钻孔的端部和环形垫圈。
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3.发明授权Mine roof anchor having adjustable resin retaining washer and expansion shell assembly with friction reducing means 失效具有可调节树脂保持垫圈和具有减摩机构的膨胀壳组件的矿顶锚杆
公开(公告)号：US5082399A
公开(公告)日：1992-01-21
申请号：US519010
申请日：1990-05-04
CPC分类号： E21D20/02 , E21D21/0093
摘要： The mine roof anchor includes a roof bolt assembly with an expansion shell assembly secured at the end of the bolt inserted into the bore hole. The expansion shell assembly includes a friction reducing means to increase the horizontal force on the leaves and the bolt assembly includes an adjustable resin retaining washer to compress the resin in the bore hole.
摘要翻译： 矿顶锚固件包括一个屋顶螺栓组件，其具有固定在插入钻孔中的螺栓端部的膨胀壳体组件。 膨胀壳组件包括减小摩擦力的装置，以增加叶片上的水平力，并且螺栓组件包括可调节树脂保持垫圈以压缩钻孔中的树脂。
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