An improved push chain type concrete sprayer

Abstract

The invention provides an improved push chain type concrete spraying machine. The improved push chain type concrete spraying machine structurally comprises a frame, a power output assembly, a driving chain wheel, a driven chain wheel assembly, a serial connection type piston assembly, a chain tightener assembly and a piston barrel assembly, wherein the driving chain wheel is connected with a power output shaft of the power output assembly, the driven chain wheel assembly is connected with the chain tightener assembly, the power output assembly and the chain tightener assembly are arranged at the left and right ends of the frame respectively, the piston barrel assembly is arranged above the middle of the frame, and the serial connection type piston assembly winds around the driving chain wheel and the driven chain wheel assembly annularly and passes through the middle of the piston barrel assembly.

Description

technical field [0001] The invention relates to engineering machinery equipment, in particular to an improved push-chain concrete sprayer which integrates conveying, pouring and tamping into one process. Background technique [0002] Because shotcrete has a series of advantages and characteristics in terms of mechanics and technology, the application fields of shotcrete machinery are extremely wide, and its application range is as follows: [0003] 1. Underground engineering: mine shafts, traffic tunnels, water conservancy culverts and various chambers; [0004] 2. Thin-walled structural engineering: thin-shell roofs, building construction, storage warehouses, etc.; [0005] 3. Repair and reinforcement works: reinforcement and repair of bridges, highway slope protection, seawalls and dams; [0006] 4. Refractory and protective engineering: construction and repair of thermal furnaces. [0007] At present, a large number of rotor-type concrete sprayers in use in China have ...

AI Technical Summary

Problems solved by technology

[0008] 1) The active sprocket and the passive sprocket in the prior art are respectively provided with a cleaning cylinder and a piston cylinder assembly up and down. The cleaning cylinder is on the top and the piston cylinder assembly is on the bottom. The serial piston passes through the cleaning cylinder and the piston cylinder at the same time Assemblies, the disadvantages are that the structure of the cleaning cylinder is complex, and flushing waste water is generated to pollute the working environment; the series piston passing through the cleaning cylinder increases the frictional resistance, increases the power consumption of the power output assembly, and increases the pressure of the series piston seal ring. wear, shortened service life

The piston barrel assembly is at the bottom, and the spray pipe can only be set horizontally, which may easily cause blockage of the spray elbow and spray pipe;

[0009] 2) The fixed screw chain tightening mechanism in the prior art is located at one end of the driving sprocket, and its polygonal effect cannot be automatically compensated during the chain transmission process, resulting in unstable chain speed and chain climbing faults caused by skipping teeth;

[0010] 3) The hopper of the prior art is equipped with a stirrer, the mixing time is too short, and the mixing uniformity is not up to standard;

[0011] 4) The passive sprocket and agitator in the prior art are arranged in the hopper at the left end, the left end of the piston barrel assembly is connected to the bottom of the hopper, and the serial piston carries blocky sand and gravel into the piston barrel assembly during its movement in the hopper. When the edge of the port is formed, impact shearing and wear will occur, resulting in a significant reduction in the service life of the sealing ring;

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