Device for checking welded joint of plunger

A technology of inspection device and live column, which is applied in the direction of using liquid/vacuum to measure liquid tightness and applying stable tension/pressure to test the strength of materials, etc. It can solve problems such as bending deformation, coating damage, and finished product damage. Achieve the effect of low cost, controllable quality and simple structure

Inactive Publication Date: 2013-03-06
LINZHOU HEAVY MACHINERY GROUP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The pressure-bearing weld test can be carried out on the assembled hydraulic cylinder, but if the test object is unqualified, the high temperature of electric welding during rework may cause damage to the finished part, such as bending deformation, coating damage, etc.
However, in order to control the quality of the manufacturing process and repair problems in time, it is necessary to test the weld as soon as possible after the welding process and before finishing, which cannot be directly realized

Method used

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  • Device for checking welded joint of plunger
  • Device for checking welded joint of plunger
  • Device for checking welded joint of plunger

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Embodiment Construction

[0013] The present invention will be further described below in conjunction with the accompanying drawings.

[0014] figure 1 Among them, it is assembled and welded by 4 parts; according to different designs, serial number 3 and serial number 4 can be one part (see figure 2 ), serial number 1, 2, 3 is a part (see image 3 ), or serial number 1 and serial number 2 can be one part (see Figure 4 ). The detection device is sleeved on the outside of the workpiece to be inspected.

[0015] The sealing ring (6) is arranged on the blocking piece (5) in the present invention, and the outside of the blocking piece (5) is positioned by the sleeve (7), and the sleeve is fixed by the screw (8).

[0016] The sleeve 7 of the present invention is provided with three screw holes threadedly connected with the screws 8 . The blocking member 5 is provided with a concave ring-shaped card-loading groove. The rubber ring 6 is an O-shaped rubber ring. After the sealing device is in...

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Abstract

The invention relates to a welded joint checking device for a vertical column, a plunger and similar products of a welding coal mine hydraulic bracket, and in particular relates to a device for checking a welded joint of the plunger. Sealing rings are arranged on a plugging piece; the outer part of the plugging piece is positioned by a sleeve; and the sleeve is fixed by screws. Three screw holes which are in threaded connection with the screws are formed in the sleeve; a clamping slot is formed in the plugging piece; O-shaped rubber rings are used as the rubber rings; and after a liquid feeding orifice in a piston end is provided with a sealing device, the conventional connector and a test pipeline are arranged at a liquid feeding orifice in the other end. The device has the advantages that after a welding working procedure, the welded joint in the plunger with liquid can be checked; before assembling, a product can be checked; the device is simple in structure and low in cost and is suitable for implementation; and the problem that bit cuttings in a drilled hole are difficult to clean after welding is performed is solved.

Description

technical field [0001] The invention relates to a weld seam inspection device used for welding coal mine hydraulic support columns, live columns and similar products, in particular to a live column weld seam inspection device. Background technique [0002] The hydraulic support for coal mine is a fully mechanized mining equipment that uses hydraulic pressure as the power to realize movements such as lifting and moving forward, and supports the roof of the coal mine. The hydraulic cylinder that is arranged nearly vertically to make the support generate support is called a column. The column is connected with the top beam and the base to provide the initial support force for the roof, and bear the load and dynamic pressure of the roof at the same time. It is the main support and hydraulic actuator part of the hydraulic support. It requires sufficient strength, reliable operation and long service life. The internal liquid movable column is generally used on the double telescop...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N3/12G01M3/02
Inventor 赵富军原剑锋常海峰
Owner LINZHOU HEAVY MACHINERY GROUP
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