Centrifugal forming die and construction method for high-strength conical cement pole

Abstract

The inventions belongs to the technical fields of manufacture of conical cement electric poles, cements communication poles and cement lamp poles and particularly relates to a centrifugal forming die and a construction method for a high-strength conical cement pole. The centrifugal forming die comprises a conical outer die, a conical inner die, an inner die large-end flange plate, a large-end prestress tensioning ring, an outer-die large-end flange plate, an outer-die small-end flange plate, a die cavity small-end closing plate, one group of running wheels, one group of bolt assemblies, a prestress locking nut, a mortar injecting port and an exhaust port, wherein the conical outer die, the conical inner die, the large-end prestress tensioning ring and the die cavity small-end closing plate form a closed annular die cavity; one group of large-end longitudinal rib inserting holes are formed in the large-end prestress tensioning ring; and one group of small-end longitudinal rib inserting holes are formed in the die cavity small-end closing plate. According to the centrifugal forming die and the construction method disclosed by the invention, the conical cement poles with the advantages of smooth inner and outer surfaces, high internal structural strength and uniformity in wall thickness can be produced. In addition, the wall thickness of the cement poles can be accurately controlled, so that the materials can be saved, the service strength of the pole bodies is ensured and the work environment of the field is improved.

Description

technical field [0001] The invention belongs to the technical field of manufacturing conical cement poles, cement communication poles and cement light poles. In particular, the invention relates to a centrifugal forming mold and a construction method of a high-strength conical cement rod. Background technique [0002] At present, the general method of manufacturing cement rods is mainly to use the mold as a single outer mold centrifugal molding process, that is: firstly put the prepared reinforcing rib skeleton into the outer mold, and then put the mixed concrete cement slurry into the outer mold , Place the mold on the centrifuge to rotate at high speed, so that the concrete loaded into the mold is rotated and centrifuged, so that the concrete is evenly distributed on the inner wall of the mold. Remove the mold from the centrifuge, steam curing after the concrete is solidified, and then cool and demould to complete the main production process. In this process, because the...

AI Technical Summary

Problems solved by technology

In this process, because the inner hole of the product is not limited by the mold, the inner surface of the concrete grout is in a free state, and the excess grout is thrown out from both ends of the mold, making the working environment dirty. The inner surface is flowing, resulting in uneven wall thickness of the cement rod and poor quality of the inner wall

And this kind of centrifugal process is only limited to concrete molding with coarse aggregate. When the cement mortar without coarse aggregate is used to make cement rods, the existing process will cause the inner wall to collapse and the outer wall to sink.

In addition, due to the different diameters of the two ends of the cement rod, the centrifugal force generated by the cement mortar at both ends is also different during rotation. In the traditional horizontal centrifugal process, the cement mortar will continuously flow from the small end to the large end, making the wall thickness of the cement rod hard to control

Another thing is that the top of the product produced by this process is in the form of openings. In order to prevent rain erosion, it is necessary to make a cement head after it is made, which increases the process, and the secondary bonding of the head is not firm and easy to fall off.

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