Thin-walled centrifugal concrete pole manufacture method

Abstract

The invention relates to a thin-walled centrifugal concrete pole manufacture method, which includes the steps: manufacturing a reinforcing rib framework, placing the reinforcing rib framework and stirred concrete into a centrifugal mould, rotating a centrifuge so that the concrete is uniformly distributed on the inner wall of the centrifugal mould to form a thin-walled centrifugal concrete pole wet green, taking the centrifugal mould down from the centrifuge, and solidifying the thin-walled centrifugal concrete pole wet green prior to steam curing and cooling demoulding. The method is characterized in that solidification of the thin-walled centrifugal concrete pole wet green is realized by leading a soft pressurizing membrane longer than the thin-walled centrifugal concrete pole wet green, made of plastics or rubber and provided with a media injection port into a central hollow cavity of the concrete pole wet green, adding pressurizing media so that the soft pressurizing membrane forms a closed cavity, keeping pressure of the pressurizing media until the concrete is solidified, emptying the pressurizing media, and taking the soft pressurizing membrane out prior to steam curing and cooling demoulding. The thin-walled centrifugal concrete pole manufacture method effectively avoids possibility of micro-cracks generated due to contraction distortion of the concrete for manufacturing a thin-walled concrete pole during solidification, so that the integral strength of the thin-walled concrete pole is improved.

Description

technical field [0001] The invention relates to the technical field of manufacturing cement electric poles, cement communication poles, cement lamp poles and cement pipe piles, in particular to a method for manufacturing thin-walled centrifugal cement poles. Background technique [0002] At present, the general method of manufacturing cement rods is mainly made by centrifugal molding process. Specifically, the prepared reinforcing rib skeleton is first put into the centrifugal mold, and then the mixed concrete is put into the mold, and the mold is adjusted and placed in the centrifugal mold. On the centrifuge, the rotating centrifuge makes the concrete evenly distributed on the inner wall of the mold, and the reinforcement skeleton is embedded in it at the same time. Remove the mold from the centrifuge, steam curing after the concrete is solidified, and then cool and demould to complete the main production process. When manufacturing thin-walled cement rods, the aggregate p...

AI Technical Summary

Problems solved by technology

When making thin-walled cement rods, because the aggregate particle size of concrete is generally small and the cement content is high, if the above-mentioned process is used, the shrinkage and deformation generated during the concrete solidification after centrifugation will be large, and micro-cracks will easily occur, which will affect the thin-walled cement. overall strength of the rod

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