发明名称 Turret for roof bolting apparatus
摘要 This turret has a head 6 enabling, after the drilling of a hole 15, the injection of a resin cartridge without modifying the position of the turret 1. A movable member 8, displaced by a jack 14, has a first passage 11 traversed by the drilling rod 4, and a second passage 12 connected to the hose 13 for the injection of resin cartridges. After the drilling of the hole 15 and the retraction of the drilling apparatus 2, the movable member 8 is displaced such that the drilling rod 4 is laterally retracted by bending. The second passage 12 is simultaneously brought in line with the axis of the hole 15 so as to enable the injection of one or more resin cartridges.
申请公布号 US4588037(A) 申请公布日期 1986.05.13
申请号 US19840680617 申请日期 1984.12.11
申请人 ENVIROTECH CORPORATION 发明人 COMBET, MICHEL
分类号 E21B19/24;E21D20/00;(IPC1-7):E21C9/00;E21D20/02 主分类号 E21B19/24
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