Subway tunnel freezing pipe cutting machine and cutting method

A technology of frozen pipes and pipe cutters, which is applied in the direction of pipe shearing devices, shearing devices, and shearing equipment, etc., which can solve the problems of inconvenient use of equipment, easy damage to frozen walls, and high risk factors, and achieve labor and material costs. The effect of reducing, wide application range and high degree of mechanization

Pending Publication Date: 2021-03-12
CHINA COAL TUNNEL ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method relies on welders, and the equipment is inconvenient to use
Construction personnel need to wear protective labor protection. During the process of gas cutting and pipe cutting, not only the high temperature is easy to damage the frozen wall, but also it is easy to explode the gun, which has a high risk factor and low efficiency.

Method used

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  • Subway tunnel freezing pipe cutting machine and cutting method
  • Subway tunnel freezing pipe cutting machine and cutting method
  • Subway tunnel freezing pipe cutting machine and cutting method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] combine Figure 1 to Figure 3 As shown, a subway tunnel frozen pipe cutting machine includes a casing 11 with an open upper end, and the upper end of the casing 11 is fixed with a casing pressure plate 6 by screws. The upper end of the cutting shaft 1 is installed on the housing 11 through the bearing I3, and a large gland 2 is installed outside the bearing I3. The cutting shaft 1 and the bearing I3 are positioned through the circlip I24 for the shaft and the circlip I23 for the hole. The upper end of the feed shaft 4 is installed on the housing 11 through the bearing Ⅱ30, and the lower end of the feed shaft 4 is installed on the housing 11 through the bearing Ⅲ26; a small gland 5 is installed outside the bearing Ⅱ30, and the feed shaft 4 and the bearing Ⅱ30 pass through the shaft. Circlip II 22 and the hole are positioned with circlip II 25.

[0048] A knife feeding tube 7 is slidingly fitted on the cutting shaft 1; a bearing cover 8 is installed in the housing 11, an...

Embodiment 2

[0054] On the basis of above-mentioned embodiment one, a kind of subway tunnel frozen pipe cutting method, the steps are as follows:

[0055] Step 1: In the subway tunnel construction, push the trolley 31 equipped with equipment to a place suitable for cutting in the freezing area, select the location to fix the trolley 31, connect the equipment, and install the cutting flexible shaft, feeding flexible shaft, and cutting motor 32. Connect the feed motor 33;

[0056] Step 2: Select a suitable power distribution cabinet to connect to electricity on site, test the motor of the power distribution cabinet, test the pipe cutting machine, cut the flexible shaft, and feed the flexible shaft along the force;

[0057] Step 3: Extend the cutting shaft 1 of the pipe cutter into the frozen pipe about 15 to 20 cm, put the pipe cutter and the frozen pipe on a straight line as far as possible, and clamp the frozen pipe with the chuck at the front of the pipe cutter. outside of the pipe exten...

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Abstract

The invention discloses a subway tunnel freezing pipe cutting machine and a cutting method, and belongs to the technical field of pipeline maintenance. A cutting shaft and a feed shaft are rotationally mounted in a body; the cutting shaft is sleeved with a feed pipe in a sliding manner; external threads are formed in the upper end of the feed pipe, and the feed shaft is connected with the externalthreads of the feed pipe through a gear transmission structure; the lower end of the cutting shaft extends out of the shell, a rotating head support is fixed to the lower end of the cutting shaft, aknife rest is installed on the rotating head support in the radial direction of the rotating head support in a sliding manner, and a knife is installed on the knife rest; the lower end of the feed pipe is connected with a conical head; and the lower side face of the conical head adopts an inclined face, the upper side face of the knife rest adopts an inclined face, and the lower side of the conical head is slidably connected with the upper side of the knife rest. The subway tunnel freezing pipe cutting machine is compact in structure, reasonable in design and convenient to use, and can be pushed to the site for use at any time; The application range is wide, use is safe, and gun explosion and frozen wall damage caused by gas cutting are avoided; and construction steps are simple, convenient and rapid, and labor and material costs are greatly reduced.

Description

technical field [0001] The invention relates to the technical field of pipeline maintenance, in particular to a subway tunnel frozen pipe cutter and a cutting method. Background technique [0002] In the post-construction of the current communication channel and the portal, the head of the frozen pipe needs to be cut off. The current pipe cutting process adopts gas cutting technology. This method relies on a welder, and the equipment is inconvenient to use. Construction personnel need to wear protective labor protection. During the process of gas cutting and pipe cutting, not only the high temperature is easy to damage the frozen wall, but also it is easy to explode the gun, which has a high risk factor and low efficiency. Contents of the invention [0003] In order to improve the pipe cutting efficiency and reduce the pipe cutting risk, the invention provides a subway tunnel frozen pipe pipe cutting machine and cutting method, [0004] The present invention is realized ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23D21/00
CPCB23D21/00
Inventor 褚洪亮任大勇张领刘得友魏厚庭
Owner CHINA COAL TUNNEL ENG CO LTD
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