A Foldable Arch Tunnel Wet Spraying Machine

Abstract

The invention relates to a foldable arch-frame type tunnel wet spraying machine. The foldable arch-frame type tunnel wet spraying machine comprises a lower vehicle body, a supporting frame which is arranged on the lower vehicle body and performs stretching / folding with the lower vehicle body, a wet spraying boom frame, spray head assemblies arranged on the wet spraying boom frame, walking tracks capable of stretching / folding, a walking trolley and a rotating boom frame; the wet spraying boom frame and the spray head assemblies both perform stretching / folding with the walking trolley, and the rotating boom frame positioned on the supporting frame drives the wet spraying boom frame and the spray head assemblies to move along the walking tracks through the walking trolley to realize wet spraying of tunnel concrete. According to the foldable arch-frame type tunnel wet spraying machine, a stable spraying distance and a spraying angle can be maintained, stable spraying along the tunnel section can be carried out automatically, the construction speed is high, the efficiency is high, and labor intensity of an operating worker can be effectively reduced; and folding can be realized, the space occupied by equipment can be greatly reduced after the folding is carried out, the whole equipment can be transported without disassembling and assembling, the equipment can be unfolded quickly toperform construction work after arriving at a construction site, and construction assistant time is greatly saved.

Description

technical field [0001] The invention relates to the field of tunnel excavation, in particular to a foldable arch type tunnel wet spraying machine. Background technique [0002] Shotcrete is an important part of the three elements of the new Austrian method. Its purpose is to promote the surrounding rock to form a ring-shaped load-bearing structure, so that the section is closed into a ring. Strengthen the structural strength of the rock mass and enhance the overall stability of the rock mass. It is suitable for various geological conditions and is more effective in weak surrounding rocks. In recent years, the wet spraying process has replaced the original dry spraying process and has become the main spraying process for road, railway and hydraulic tunnel construction. [0003] At present, most of the wet spraying uses shotcrete manipulators. During construction, the wet spraying hands control the rotation angle of the turntable, the pitch angle of the big and small arms, t...

AI Technical Summary

Problems solved by technology

[0003] At present, most of the wet spraying uses shotcrete manipulators. During construction, the wet spraying hands control the rotation angle of the turntable, the pitch angle of the big and small arms, the swing angle of the sprinkler head, and the telescopic length of the telescopic arm to spray in a specific direction by operating the remote control. Due to the degree of freedom of the boom There are many, complicated operations, and high requirements for the operation of wet sprayers. Wet sprayers must undergo professional wet spraying training and wet spraying training before wet spraying. The wet spraying experience and technology of wet sprayers largely affect concrete. The quality of wet spraying, spraying distance and spraying angle are very random, and the rebound rate must be high. At the same time, the labor intensity of wet spraying manual operation is relatively large, and the spraying quality is unstable.

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