Concrete wet shotcreting equipment for roadway

Abstract

The invention discloses concrete wet shotcreting equipment for a roadway. The concrete wet shotcreting equipment comprises a machine body, wherein a batching machine, a stirrer, a pumping mechanism and a power mechanism are arranged on the machine body; a walking mechanism is arranged below the machine body; the stirrer comprises a stirring cylinder and a stirring multi-path valve connected with the stirring cylinder; two parallel stirring shafts are arranged inside the stirring cylinder; the pumping mechanism comprises a wet shotcreting main valve block, a blanking copper and a wet shotcreting discharging copper communicated with the blanking copper; an S valve conveying pipeline is arranged inside the wet shotcreting discharging copper; one end of the S valve conveying pipeline is connected with a concrete conveying pump, and the other end of the S valve conveying pipeline is connected with a concrete wet shotcreting pipeline; a shower nozzle assembly is arranged at the tail end of the concrete wet shotcreting pipeline; the power mechanism comprises a mining anti-explosion motor and a transfer case; the transfer case is internally provided with a main pump and a secondary pump; the main pump is connected with the wet shotcreting main valve block; the secondary pump is connected with the stirring multi-path valve. With the adoption of the concrete wet shotcreting equipment provided by the invention, the functions of batching, stirring, discharging, wet shotcreting and walking can be realized. The concrete wet shotcreting equipment is particularly applicable to operations in underground engineering, shotcreting in the coal mine roadway and the like.

Description

technical field [0001] The invention relates to a wet spraying machine, in particular to concrete wet spraying equipment for shafts. Background technique [0002] Shotcrete is a kind of concrete that is sprayed on the sprayed surface at a high speed by using compressed air or other power with the help of spraying machinery, impacting, extruding, and setting in a few minutes. In coal mine roadway support engineering, spraying concrete on the surface of the roadway is an important construction link. The concentration is very low, the rebound loss is relatively small, and the concrete strength after solidification is high, so in many concrete spraying fields, the wet spraying process has replaced the dry spraying and tidal spraying process. [0003] At present, in concrete spraying constructions such as railways, highways, and tunnels, the concrete used for spraying is all commercial concrete, which can be transported to the construction site by a mixer truck for spraying oper...

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Problems solved by technology

However, the shotcrete for roadway excavation in underground coal mines is generally hundreds of meters or even more than a thousand meters deep from the ground. There are no special mixer trucks suitable for various mines. Even with such transportation equipment, it is very difficult to transport concrete from the ground to the underground. It is not economical, and the more economical and quicker method is to transport the materials to the underground with a mine trolley for on-site mixing. At present, the concrete mixers that can be used for on-site mixing include reverse discharge mixers and horizontal shaft forced mixers. These mixers have common The disadvantage is that it is designed according to the ground construction. It is bulky and cannot adapt to the construction operations in the narrow space of the coal mine underground roadway. Moreover, these mixers are traditional concrete mixing modes that inherit material feeding, mixing and discharging. Continuously feed the pumping device of the concrete wet spraying machine, and there are many intermediate links between mixing and pumping, which reduces the progress of the concrete wet spraying project

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