Novel concrete mold spraying equipment

Abstract

The invention discloses novel concrete mold spraying equipment. The novel concrete mold spraying equipment comprises a carrier mechanism, a big arm mechanism, a template mechanism and a nozzle assembly. The carrier mechanism is provided with the big arm mechanism, the big arm mechanism comprises a big rotary arm, and the template mechanism and the nozzle assembly are arranged at the front end of the big rotary arm. The template mechanism is capable of forming a mold cavity with an excavation rock face, and the nozzle assembly is capable of adjusting the injection angle / direction relative to the mold cavity. By using a mold spraying trolley, zero rebound can be achieved, the amount of concrete can be reduced by 20%-40% in the same working range, the amount of setting accelerators is reduced, and economic and social benefits are remarkable; the surface finish quality of the concrete is high, post-shaping is no needed, the construction period is shortened, and the production efficiency isgreatly improved; and the mechanical construction can be remotely operated in the whole process, the construction safety is greatly improved, the dust intake of operators can be effectively reduced,and the probability of occupational diseases such as silicosis is reduced.

Description

technical field [0001] The invention belongs to the technical field of engineering machinery, and in particular relates to a newly designed concrete mold spraying equipment used for the initial support of tunnels. Background technique [0002] In the initial support construction of the tunnel, the construction method of directly spraying concrete on the excavation surface is adopted, and the spraying concrete method is divided into two types: mechanical arm spraying and manual spraying. The current direct shotcrete construction method has the following disadvantages: [0003] The rebound rate is high. Now there is 20%-40% rebound in the construction process, and the rebound material cannot be recycled, resulting in great waste, which is the main reason for the high construction cost. [0004] The amount of quick-setting agent is large, and the construction method of direct spraying concrete requires that the concrete needs to be bonded to the excavation surface within a sho...

AI Technical Summary

Problems solved by technology

[0009] However, during the mold spraying operation, the template mechanism used is very different from the traditional fixed template, and it needs to be constantly adjusted dynamically, and the position of the nozzle assembly relative to the template mechanism and relative to the mold cavity must be constantly adjusted. Adjustment, the requirements for control actions are very complex and must be precise, which puts forward high requirements for the overall performance of the mold spraying mechanism

How to design mold spraying equipment for tunnel support layer to realize mold spraying operation, there is no ready-made equipment and equipment for reference, and it is difficult to meet the above-mentioned requirements in the prior art

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