A three-in-one anchor cable construction device for hole forming, installation and grouting

Abstract

The invention discloses an anchor cable construction device combining hole forming, mounting and grouting into one. The anchor cable construction device comprises a drill rod assembly and a push-pull power system, the drill rod assembly comprises a drill rod, a drill bit and a hydraulic power motor, the drill rod is hollow, the hydraulic power motor, a grouting pipe and an oil supply pipeline are arranged in the drill rod, the hydraulic power motor is fixed in the hole drilling end of the drill rod, a grouting hole is formed in the hole drilling end, and the drill bit is arranged on the hydraulic power motor. A plurality of grooves extending in the length direction of the drill rod are distributed in a rod body of the drill rod at intervals in the circumferential direction. A plurality of anchor cable penetrating holes are formed in the inner side wall of the hole drilling end of the drill rod at intervals in the circumferential direction, an inclined channel is communicated between each anchor cable penetrating hole and the corresponding groove, and the inclined channels extend from the anchor cable penetrating holes to the other end of the drill rod. The drill rod is provided with an anchor cable separator used for clamping an anchor cable placed in the grooves in the hole retreating and pulling out process. The anchor cable construction device is higher in operability and wider in application range, construction time can be greatly saved, and construction efficiency can be improved.

Description

technical field [0001] The invention relates to the technical field of prestressed anchor cables, in particular to an anchor cable construction device integrating hole forming, installation and grouting. Background technique [0002] Prestressed anchor cables are widely used in foundation pit support engineering. The traditional prestressed anchor cable construction process is mainly divided into three steps, namely hole forming, anchor cable installation, and grouting. Specifically, first use a drilling rig to drill holes on the side wall of the foundation pit. After the drilling depth meets the design length, the drill pipe is pulled out, and then the prepared prestressed steel strands are manually inserted. There are 1 to 2 strands bound on the steel strands. The grouting pipe is finally used to inject cement slurry under high pressure through the grouting pipe to form an anchor, and rely on the friction between the anchor and the soil layer to form a stressed structure....

AI Technical Summary

Problems solved by technology

Because the power equipment that drives the drill pipe is placed outside the hole, the drill pipe rotates continuously during the drilling process, and the inner and outer walls of the drill pipe cannot attach anchor cables and grouting pipes, so the drill pipe must be pulled out after the hole is formed. Anchor cables can be installed and grouted

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