A Method for Producing Reinforced Concrete Pipes by Extruding and Demolding with Dual Vibration Sources

Abstract

The invention discloses a method for producing a reinforced concrete pipe by extrusion demolding of double vibration sources. The method comprises the following steps of A, digging a foundation pit in the ground surface, and arranging a material conveying device and a hoisting device outside the foundation pit; B, installing vibration platforms, an inner circular die vibration tube and an outer circular die tube structure in the foundation pit; C, arranging a baffle plate supporting structure covering the foundation pit above the foundation pit; D, leading concrete raw materials inputted by the material conveying device into an annular cavity between the inner circular die vibration tube and the outer circular die tube, and starting high-frequency vibrators; F, starting a hydraulic extrusion device to carry out physical extrusion after the annular cavity is fully filled with concrete; G, separating the reinforced concrete pipe from the inner circular die vibration tube after the extrusion forming; H, finally separating the outer circular die tube structure from the reinforced concrete pipe. The reinforced concrete pipe produced by utilizing the method has a smooth inner pipe wall and a smooth outer pipe wall; the method disclosed by the invention has the advantages that the safety is good, the operation is convenient, the production efficiency is high, the maintenance is convenient, the pipe manufacturing process is environment-friendly, and an obvious advantage is obtained for producing a series of large-diameter reinforced concrete pipes.

Description

technical field [0001] The invention relates to the technical field of concrete pipe manufacturing methods, in particular to a method for producing reinforced concrete pipes through double vibration source extrusion and demoulding. Background technique [0002] Concrete means concrete, and reinforced concrete pipes are commonly known as reinforced concrete pipes. Reinforced concrete pipes have many advantages such as anti-corrosion and anti-seepage, high compressive strength, long service life, easy manufacture, and low production cost. At present, they are used as the main pipe network buildings for urban waterlogging and urban and rural capital construction drainage. [0003] With the gradual increase of the state's efforts in urban and rural infrastructure construction, and increasing emphasis on improving the urban and rural environment and improving people's living standards as a whole, more and more engineering construction has been put on the table. And engineering c...

AI Technical Summary

Problems solved by technology

[0005] However, the pipe-making methods of "mandrel vibration", "centrifugal" or "suspension roller" represented by the above-mentioned patent documents still have the following disadvantages:

[0007] 2. The "centrifugal", "suspension roller" and "mandrel vibration method" are used to produce concrete pipes. Because the mold or mandrel needs to rotate, it is difficult to control the process of conveying concrete raw materials during production, and it is difficult to use advanced equipment with high transmission efficiency. , so the use of manpower is large and the production efficiency is low

[0008] 3. Using "centrifugal", "suspension roller" including "mandrel vibration method" to produce reinforced concrete pipes, there are many transmission and rotating equipment, which will be damaged and worn during the production process, the failure rate is high, and the amount of maintenance is large, which directly affects Production efficiency and increased production costs

Insufficient thixotropic reaction of concrete

The plasticization and liquefaction degree of concrete is poor. Therefore, using the existing "mandrel vibration method" to produce the outer mold and inner mold structure of reinforced concrete pipes, the demoulding is inconvenient, and the produced concrete pipe wall is very rough. And it is inconvenient to demould, and it is easy to cause the defect of concrete pipe collapse and deformation

[0010] 5. When using "centrifugal", "suspension roller" including "mandrel vibration method" to produce reinforced concrete pipes, there is no special cover structure to isolate the operator from the pipe making equipment. Therefore, on the one hand, the existing manufacturing The pipe equipment cannot provide a working platform for the operator to operate intuitively. On the other hand, it cannot guarantee that the reinforced concrete raw materials or other impurities will fall into the gaps of the various parts of the pipe making equipment. In severe cases, the pipe making equipment will stop working and affect the work efficiency and reduce the service life of the equipment

Images