A locking foot bolt orientation device for tunnel construction

Abstract

The invention discloses an orienting device for locking foot bolts used in tunnel construction. The end of the side wall of the first U-shaped splint and the end of the side wall of the second U-shaped splint respectively have a laterally protruding abutment plate. The first U The U-shaped grooves of the U-shaped splint and the second U-shaped splint are respectively clamped on the wing plates at the left and right ends of the web of the I-shaped steel. The webs of the I-beams are attached to each other; the opposite side walls of the first U-shaped splint and the second U-shaped splint are respectively provided with a relative upper channel and a relative lower channel; The end of the central screw of the supporting frame at the position is provided with a first protrusion with a diameter smaller than that of the central screw. The end of the central screw rod of the support frame at the groove is provided with a second protrusion with a diameter smaller than that of the central screw rod.

Description

technical field [0001] The invention relates to the technical field of tunnel construction, in particular to an orientation device for locking foot anchor rods. Background technique [0002] Disclosed in the Chinese patent CN109681250A is an installation structure of an L-shaped locking foot bolt, and specifically discloses: it includes a surrounding rock layer, a steel arch frame, and an L-shaped locking foot bolt; the L-shaped locking foot bolt includes a rod portion and The tail end portion perpendicular to the rod; also includes an adjuster, the adjuster includes a mounting plate, the mounting plate is fixedly connected with the side of the steel arch frame facing away from the surrounding rock layer, and the mounting plate is fixedly connected with a rotating Seat, the upper surface of the rotating seat is provided with a circle of first meshing teeth in the circumferential direction; the rotating seat is connected with a rotating seat, and the rotating seat is provided...

AI Technical Summary

Problems solved by technology

However, there are still problems in the above-mentioned patents: the first meshing teeth are arranged on the steel arch frame, and the second meshing teeth are arranged on the L-shaped bolt. Therefore, the rod of the locking foot bolt must be inserted into the surrounding rock After the anchor hole is drilled, the combination of the first meshing tooth and the second meshing tooth can be realized, and the angle can be adjusted

The problem that still exists in the above patent is that it is not possible to adjust the angle during the insertion process

Although the above-mentioned patents provide that the inclination angle of the lock-foot anchor pipe can be adjusted during the construction process, there is a huge problem, that is, for the L-shaped anchor rod, after the anchor rod is introduced into the surrounding rock, the positioning cylinder cannot be positioned. remove from the anchor

In this way, it not only leads to the waste of the workpiece, but also due to the limitation of the positioning cylinder, the end of the L-shaped anchor rod cannot be fitted with the I-beam, which affects the welding of the anchor rod and the I-beam.

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