A kind of auxiliary pipe cutting machine

Abstract

The invention relates to the field of special pipe withdrawal tools, in particular to an assistance pipe cutter for dismantling a metal hollow pipe body in a heat exchanger. The assistance pipe cutter comprises an axial displacement part and a fixing part, wherein a lever assembly for dragging the axial displacement part to do the displacement action is arranged on the fixing part, hinge joints which form the lever assembly are arranged on the fixing part, one end of a lever body which forms the lever assembly extends and is matched with the axial displacement part in a hinged mode, and a hold end for application of force and holding is arranged on the lever body. The distance between the position, hinged with the axial displacement part, of the lever body and the hinged point is less than the distance between the hinged point and the hold end of the lever body. The assistance pipe cutter abandons a behindhand manpower pressing structure which is high in labor intensity and low in working efficiency, uses the lever principle skillfully and depends on a labor-saving dragging character of the lever assembly hinged to prize an object, so that the aim that the labor intensity is reduced when an operator uses is achieved.

Description

technical field [0001] The invention relates to the field of special pipe fitting dismounting tools, in particular to a power-assisted pipe cutter for dismounting a metal hollow pipe body in a heat exchanger. Background technique [0002] Most of the current tubular heat exchangers include a plurality of hollow tubes arranged in parallel and clamping shells arranged on the outside of the tubes to clamp the two ends of the tubes. Two liquids of different temperatures are passed between them, so as to realize the heat exchange function between the two liquids. During the installation and maintenance process of the hollow tube body of the tubular heat exchanger, in order to ensure that the length of the hollow tube body can meet the assembly levelness requirements of the holes at both ends of the clamping shell after tensioning, the length of the tube body to be assembled is often Longer; after assembling the end of the pipe body to the hole on the clamping shell and tightenin...

AI Technical Summary

Problems solved by technology

Even after such a long period of continuous improvement, the existing problems still cannot be underestimated: after each cutting is completed, it is necessary to cooperate with the spring reset operation of the shaft to achieve the purpose of resetting the cutting shaft. The force is still the operator himself; that is to say, every time a pipe is disassembled during operation, it is necessary to manually push the electric drill and overcome various spring forces in the special cutting device, which often causes damage to the operator's arm. The huge force burden makes it sore and unbearable to continue the follow-up tube cutting operation, which is also the root cause of the current low tube cutting efficiency

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