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    • 2. 发明申请
    • FIBERGLASS ROOF AND RIB PLATE
    • FIBERGLASS屋顶和RIB板
    • WO2013126688A1
    • 2013-08-29
    • PCT/US2013/027305
    • 2013-02-22
    • FCI HOLDINGS DELAWARE, INC.
    • SUB, Travis, MikelOLDSEN, John G.
    • E21D11/14
    • E21D17/01E21D21/0006E21D21/0033E21D21/008E21D21/0086
    • A bearing plate and a nut and bolt arrangement for use as a rib or roof support for coal mines where the extracted coal is used for powder coal and has a specific gravity in the range of 1.5-1.9, preferably 1.7. The bearing plate has an outer reinforced area surrounding an inner reinforced area. The outer reinforced area has one or more endless rib members and the inner reinforced area has a plurality of legs, wherein the legs are spaced from one another and the first end of each leg encircles a bolthole in a center of the bearing plate to receive the bolt of the nut and bolt assembly. The bearing plate and the nut and bolt assembly are made of fiberglass reinforced plastic
    • 一种用于煤矿的肋骨或屋顶支撑的支承板和螺母和螺栓装置,其中提取的煤用于粉煤,比重范围为1.5-1.9,优选为1.7。 轴承板具有围绕内部加强区域的外部加强区域。 外部加强区域具有一个或多个环形肋构件,并且内部加强区域具有多个腿部,其中腿部彼此间隔开,并且每个腿部的第一端部围绕支撑板的中心的螺栓孔,以接收 螺母和螺栓组件的螺栓。 轴承板和螺母和螺栓组件由玻璃纤维增​​强塑料制成