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Steel-frame cutting method and device

A technology for cutting devices and steel bars, applied in auxiliary devices, welding/cutting auxiliary equipment, welding/welding/cutting items, etc., which can solve problems such as hindering work efficiency and long time.

Active Publication Date: 2021-01-08
KOBELCO CONSTR MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the method of moving the cutting torch along the surface of the steel bar while bringing the burner of the cutting torch close to the surface as described above, it takes a long time until the cutting is completed.
This situation obviously hinders the improvement of work efficiency

Method used

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  • Steel-frame cutting method and device
  • Steel-frame cutting method and device
  • Steel-frame cutting method and device

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Embodiment Construction

[0034] Hereinafter, embodiments of the present invention will be described in detail based on the drawings. The following descriptions of the best embodiments are merely for illustrating the essence of the present invention, and are not intended to limit the present invention to its applications or uses at all.

[0035] figure 1 A demolition machine is shown as an example of a construction machine equipped with a cutting device according to each embodiment of the present invention described below. This demolition machine includes an undercarriage 1 , an upper revolving unit 2 rotatably mounted on the undercarriage 1 , a boom 3 , a boom 4 , a crushing device 5 , and the cutting device described above. The upper revolving body 2 includes a revolving frame 2a and a cab 2b mounted thereon. The boom 3 is installed on the front part of the upper rotating body 2 in a undulating manner. The crushing device 5 is detachably mounted on the distal end of the boom 3 .

[0036]The boom ...

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PUM

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Abstract

Provided is a method and a device for efficiently and reliably cutting a steel frame. The cutting method includes: disposing a cutting torch (50) at a position away, in a direction along a cutting surface, from a steel frame (10A) held by a holding device; while setting a flame and supplying cutting oxygen from a burner (52) of the cutting torch (50) in a supply direction along the cutting surface, moving the cutting torch (50) from a cutting start position to a first cutting end position in a first feed direction perpendicular to the supply direction, thereby cutting a part of the cutting surface; and, after stopping the cutting torch (50) at the first cutting end position, moving the cutting torch (50) from the first cutting end position in a second feed direction opposite from the firstfeed direction, thereby cutting an uncut part.

Description

technical field [0001] The present invention relates to a method and an apparatus for cutting steel bars made of H-shaped steel or angle pipes, for example, using a cutting torch. Background technique [0002] Conventionally, a method and an apparatus described in Patent Document 1 are known as a method and apparatus for cutting steel bars with a cutting torch. This device includes a jig for clamping a steel bar, and a moving unit that moves the cutting torch along the surface of the steel bar while bringing the burner of the cutting torch close to the surface of the steel bar. The gripping of the steel bar by the jig and the transfer of the cutting torch by the moving unit are performed by remote operation. [0003] However, in the method of moving the cutting torch along the surface of the steel bar while bringing the burner of the cutting torch close to the surface as described above, it takes a long time until the cutting is completed. This situation obviously hinders ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K7/00E04G23/08
CPCE04G23/08B23K7/10B23K2101/28B23K37/0294B23K2101/24B23K2103/04B23K7/003B23K37/0435
Inventor 山崎隆典山下康一保坂善伸藤田嗣人
Owner KOBELCO CONSTR MASCH CO LTD