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Method for repairing valve hole in middle cylinder bottom of stand column

A repair method and technology for the bottom of the cylinder, which are applied in the directions of boring/drilling, drilling/drilling equipment, manufacturing tools, etc., can solve the problem of scratches on the valve hole at the bottom of the cylinder in the hydraulic support column, great influence on the repair quality, and stringiness. liquid and other problems, so as to ensure the accuracy and uniformity of repair, improve repair quality, and improve service life.

Pending Publication Date: 2022-03-18
SHANDONG ENERGY HEAVY EQUIP MFG GRP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] There is no effective repair method for defects such as scratches and corrosion in the cylinder bottom valve hole in the hydraulic support column. Generally, surface polishing is used for inspection. When defects occur, local spot welding is performed on the defect and smoothed by electric grinding. Although this repair method can Barely meet the requirements of use, but the bottom valve hole is repaired by manual grinding, and the repair quality is greatly affected by human factors. The corrosion of the bottom valve hole is serious to a certain extent, which will cause liquid leakage between the middle cylinder and the outer cylinder of the column, so that the bottom valve will fail, which will bring potential quality problems to the hydraulic support

Method used

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  • Method for repairing valve hole in middle cylinder bottom of stand column
  • Method for repairing valve hole in middle cylinder bottom of stand column
  • Method for repairing valve hole in middle cylinder bottom of stand column

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Embodiment Construction

[0026] In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution of the present invention is clearly and completely described below in conjunction with the accompanying drawings of the present invention. Based on the embodiments in this application, those of ordinary skill in the art will Other similar embodiments obtained without creative work shall all fall within the scope of protection of this application. In addition, the directional words mentioned in the following embodiments, such as "upper", "lower", "left", "right", etc., are only referring to the directions of the drawings, therefore, the directional words used are for illustration rather than limitation invent.

[0027] Bottom valve hole design diameter is small, generally in In between, the hole is difficult to be welded deep in the bottom of the middle cylinder. The conventional repair method is to use argon arc welding, secondary welding...

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Abstract

The invention belongs to the technical field of hydraulic supports, and particularly discloses a stand column middle cylinder bottom valve hole repairing method which comprises the steps that a boring and welding all-in-one machine and the bottom end of a stand column middle cylinder are coaxially fixed through a correcting tool, then rough machining is conducted on a middle cylinder bottom valve hole through a rough boring cutter of the boring and welding all-in-one machine, and then ring welding is conducted on the roughly machined middle cylinder bottom valve hole through a welding gun. And then a semi-finish boring cutter is used for carrying out semi-finish machining on the middle cylinder bottom valve hole, a finish machining cutter is used for carrying out finish machining on the middle cylinder bottom valve hole, and finally polishing treatment is carried out to complete repairing. A series of matched tools and cutters are manufactured on the basis of a portable welding and boring all-in-one machine, the tools and the cutters are recovered to the original size after finish machining, and the service life of the middle cylinder bottom valve hole is prolonged.

Description

technical field [0001] The invention belongs to the technical field of hydraulic supports, and in particular relates to a method for repairing a cylinder bottom valve hole in a column. Background technique [0002] There is no effective repair method for defects such as scratches and corrosion in the cylinder bottom valve hole in the hydraulic support column. Generally, surface polishing is used for inspection. When defects occur, local spot welding is performed on the defect and smoothed by electric grinding. Although this repair method can Barely meet the requirements of use, but the bottom valve hole is repaired by manual grinding, and the repair quality is greatly affected by human factors. The corrosion of the bottom valve hole is serious to a certain extent, which will cause liquid leakage between the middle cylinder and the outer cylinder of the column, so that the bottom valve will fail, which will bring potential quality problems to the hydraulic support. [0003] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P6/00B23K9/167B23K9/32B23B41/00B23Q3/06B23Q17/20
CPCB23P6/00B23K9/167B23K9/32B23B41/00B23Q3/06B23Q17/20
Inventor 曹学亮赵志梅张鑫谷亮唐加明郭浩李振杨力牛长江任启明高婷婷
Owner SHANDONG ENERGY HEAVY EQUIP MFG GRP CO LTD
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