Pouring tool for a nodular cast iron jacking pipe and working method thereof

Abstract

The invention discloses a pouring tool for a nodular cast iron jacking pipe and a working method thereof. The pouring tool comprises a trepanning blanking cone, a flexible external die, a movable bottom die and a fixed bottom die sequentially arranged from top to bottom, wherein the lower part of the fixed bottom die is fixed with the ground; the upper part of the fixed bottom die is fixedly connected with the movable bottom die; the flexible external die is mounted on the outer side of the upper part of the fixed bottom die; the lower part of the movable bottom die is fixedly connected with the fixed bottom die; and the nodular cast iron jacking pipe is mounted at the upper part of the movable bottom die and is composed of a nodular cast iron jacking pipe inserting opening, a nodular castiron jacking pipe bellmouth, a pushing flange, a flange rib plate and a pipe body. The pouring tool is convenient to assemble and facilitates reduction of labor intensity; through overlapped matchingof support rings, manufacture of outer wrapped concrete of the nodular cast iron jacking pipes with different lengths is realized and pouring of the flange with a long slotted hole or without a longslotted hole can be realized.

Description

technical field [0001] The invention relates to the technical field of pouring tooling for making pipes wrapped with concrete, in particular to a pouring tooling suitable for making ductile iron pipe jacking. Background technique [0002] The ductile iron pipe jacking is made by welding the jacking flange on the socket of the ordinary ductile iron pipe and outsourcing the concrete. It is suitable for the construction of pipe jacking (a laying technology without pipe trench). [0003] Chinese invention patent CN201610521066.4 "A kind of propulsion tube outer wall grouting equipment and its use method" and Chinese invention patent CN201610978969.5 "Ductile iron cast pipe outsourcing cement mortar steel mold" both provide a tool for making ductile iron pipe jacking, The pouring positions are all located at the lower part of the push flange, which cannot take into account the ductile iron pipe jacking (the push flange has long slot holes and hoisting hole) production. [0004]...

AI Technical Summary

Problems solved by technology

[0003] Chinese invention patent CN201610521066.4 "A kind of propulsion tube outer wall grouting equipment and its use method" and Chinese invention patent CN201610978969.5 "Ductile iron cast pipe outsourcing cement mortar steel mold" both provide a tool for making ductile iron pipe jacking, The pouring positions are all located at the lower part of the push flange, which cannot take into account the ductile iron pipe jacking (the push flange has long slot holes and hoisting hole) production

[0004] At the same time, in the first two patents, the ductile iron pipe and the base cannot be positioned accurately, and the socket is not specially sealed, which is easy to cause defects due to slippage, affects product consistency, and increases the workload of repairs.

There is no rounding device on the top of the grouting form, which may easily cause the top of the concrete to be elliptical

In addition, it does not consider the production methods of products of different lengths

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