An arch type tunnel wet spraying machine

Abstract

The invention relates to an arch type tunnel wet spraying machine. The arch type tunnel wet spraying machine comprises a door frame system, a walking track mounting bracket, a wet spraying telescopicarm frame, a walking track, a walking trolley, rotating arm frames and a spray-head assembly. The walking track mounting bracket is positioned on the door frame system, the walking track is positionedon the walking track mounting bracket, and the rotating arm frames positioned on the door frame system drives the spray-head assembly on the wet spraying telescopic arm frame to move along the walking track through the walking trolley to realize wet spraying of tunnel concrete. The stable spraying distance and spraying angle can be maintained, stable spraying along a tunnel section can be automatically carried out, high construction speed and high efficiency are achieved, and the labor intensity of operating workers can be effectively reduced.

Description

technical field [0001] The invention relates to the field of tunnel excavation, in particular to an 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, the swing...

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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