Boom system of wet spraying machine

Abstract

The invention discloses a boom system of a wet spraying machine. The boom system of the wet spraying machine comprises a base, a vertical rotary platform, a horizontal rotary platform, a big arm, a medium arm, a small arm, a telescopic arm, a jet device, oil cylinders, a connecting rod, a concrete conveying pipe, a high-pressure air conveying pipe and a hydraulic oil pipe, wherein the base and the vertical rotary platform are connected through a rotary support, the horizontal rotary platform (3) is connected with the vertical rotary platform through a rotary support, the horizontal rotary platform is connected with one end of the big arm in a hinged mode, and the first oil cylinder is arranged between the horizontal rotary platform and the big arm. According to the boom system of the wet spraying machine, bidirectional rotation of the rotary platforms is achieved, bending of the big arm, the medium arm and the small arm, stretching and contraction of the telescopic arm, and bending between the jet device and a rotary motor are achieved, multidirectional control can be easily achieved, the working dead angle is eliminated, the jet area is greatly increased, normal spraying application operation can be carried out on sections, with different sizes, of tunnels, and complex sprayed surfaces of the tunnels, the operating range is wide, efficiency is high, labor intensity of workers is reduced, and concrete construction quality is high.

Description

technical field [0001] The invention relates to the field of engineering construction machinery, in particular to a boom system of a concrete wet spraying machine used for initial support construction of tunnel engineering, highway engineering, and side slopes. Background technique [0002] Among the existing engineering construction machinery, wet concrete spraying machine is a relatively common construction machinery. The working principle of the concrete spraying machine is to use compressed air to transport the pre-mixed concrete mixture to the nozzle of the spraying machine through the pipeline, and form a material beam after being mixed with an accelerator. On the sprayed surface, the quick-setting agent makes the concrete set and harden quickly, thus forming a concrete support layer. Shotcrete technology is widely used in various construction fields because of its simple process and economical cost. [0003] Most of the widely used spray machines are small hand-hel...

AI Technical Summary

Problems solved by technology

This kind of wet spraying machine can't control the quality of sprayed concrete well, the concrete is easy to rebound and collapse, the construction quality is poor, and the efficiency is low; in addition, the spraying head is manually operated, the labor intensity of the workers is high, the dust generated by spraying is large, and the construction environment Poor, great impact on workers' health

[0004] The publication number is CN102900442A, and the name is boom system, wet spraying machine and construction machinery with the boom system. It discloses a wet spraying machine boom system scheme. The advantage of the boom system is that it has a simple structure, low The horizontal movement of the boom of the wet spraying machine is realized at a low cost. The disadvantage is that it has poor adaptability to complex surfaces, the spraying range below the ground level is small, and there are dead angles.

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