Tunneling head-on temporary support front canopy clip

Abstract

The invention relates to a tunneling head-on temporary support front canopy clip which is characterized in that the clip comprises a pair of clamping plates, the front surfaces of the two clamping plates are L-shaped, and the side surfaces of the clamping plates are U-shaped, so that two pair of clamping jaws are formed at the heads of the two clamping plates; the tail ends of the two clamping plates are rotatably connected through a pin shaft; a rectangular through hole is arranged below each clamping claw; a T-shaped steel plate pin is arranged in the rectangular through hole below each pair clamping claw in a penetrating way, and locking holes are arranged in the middle of the two T-shaped steel plate pins; corresponding to the locking holes, pin jackets are respectively welded at the outer edges of the two rectangular through holes of the clamping plate at one side; the two pin jackets are respectively and internally provided with a locking pin; a circle of boss is arranged in themiddle of each locking pin; the boss is provided with a pin handle in the radial direction, and correspondingly the bottom of the pin jacket is provided with a spout for carrying the pin handle; and a spring is sheathed at the tail of each locking pin, and the heads of the locking pins are inserted into the locking holes of the T-shaped steel plate pins. In the front canopy clip, the locking and unlocking processes of a front canopy are simple and flexible and are operated conveniently, so that the front canopy clip can be widely applied in the underground tunneling timbering roadway operation.

Description

technical field [0001] The invention relates to a fastening device, in particular to a clamp for a front beam used for temporary support of a head-on tunnel in an underground tunnel tunnel. Background technique [0002] In the prior art, the clamp fastening device for the forward beam used in the tunnel of the underground excavation shed is fastened with a M12×200mm bolt and nut to support the forward probe beam and play the role of forward roof protection. Due to reasons such as damp air in the mine, gun collapse, etc., the existing front beam clips are prone to screw corrosion, dead buckle, thread withdrawal, loss, etc.; Therefore, in practical application, due to the above disadvantages, accidents of dropping the top and hurting people often occur when the front probe beam is idle for a long time. Tracing it to its cause, the key is that the fixed locking device of the probing beam clip is affected by the environment, and the installation, disassembly, and movement are n...

AI Technical Summary

Problems solved by technology

The reason is that the fixing and locking device of the front probe beam clip is affected by the environment, and the installation, disassembly, and movement are not flexible and the reliability is not strong.

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