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Rail bottom section flaw detection undercarriage for welded joint weld joint of welded rail base steel rail

A technology for welding joints and landing gear, which is applied in the direction of material analysis, measuring devices, and instruments using sound waves/ultrasonic waves/infrasonic waves. problems, to achieve the effect of improving efficiency and accuracy

Pending Publication Date: 2020-06-19
四川曜诚无损检测技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1. Bulk or point defects, such as looseness and slag inclusion;
[0005] 2. Planar defects, such as gray spots, unwelded, etc., among which planar defects are very dangerous. It not only reduces the effective cross section of the rail, but also causes stress concentration, and even causes the weld to pull apart or the rail to break
[0007] 1. Manual hand-held probes are used for flaw detection. There are many influencing factors, the scanning range is not comprehensive, manual identification and judgment, flaw detection results are unreliable, and safety technology is not guaranteed;
[0008] 2. For planar defects, double-probe K-type and tandem flaw detection methods must be used. The operation is complicated, and the technical level and skills of flaw detection operators are high, and manual flaw detection is difficult to achieve;
[0009] 3. The flaw detection efficiency is low, and the flaw detection process is a bottleneck restricting the production of the welding rail assembly line;
[0010] 4. The low level of informatization is not conducive to the preservation of flaw detection data, and the welding process cannot be improved through statistical analysis of data

Method used

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  • Rail bottom section flaw detection undercarriage for welded joint weld joint of welded rail base steel rail
  • Rail bottom section flaw detection undercarriage for welded joint weld joint of welded rail base steel rail
  • Rail bottom section flaw detection undercarriage for welded joint weld joint of welded rail base steel rail

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Such as figure 1 As shown, in this embodiment, a rail bottom cross-section flaw detection landing gear for the welding seam of the rail base rail welding joint includes a B column 81, a B mounting seat 87 arranged on both sides of the B column 81, and a B mounting seat 87. The B probe mounting seat 88 on the top and several B probe mounting grooves 89 arranged on the B probe mounting seat 88, the B probe mounting grooves 89 on the two B probe mounting seats 88 are symmetrically arranged on both sides of the B column 81.

[0031] When the steel rail needs to be detected, the steel rail is placed on the top of the B probe mount 88, and the B probe mount 88 is used to install the ultrasonic probe so that the ultrasonic probe is aimed at the bottom of the steel rail. During the detection process, the B probe mounting base 88 is brought into contact with the rail, and the ultrasonic probe emits ultrasonic waves that pass through the bottom of the rail and receive the ultraso...

Embodiment 2

[0039] Such as figure 1 , image 3 As shown, on the basis of the above-mentioned embodiments, in this embodiment, two B guide wheels 810 respectively located on both sides of the steel rail are rotatably installed on the B mounting base 87, and the axes of the B guide wheels 810 are parallel In the height direction of the rail, the minimum distance between the two B guide wheels 810 is equal to the rail bottom width of the rail.

[0040] The B guide wheel 810 can be clamped on both sides of the rail, so that when the B mounting seat 87 and the rail move relative to each other, the ultrasonic probe can always be kept at the designed position, thereby preventing the detection accuracy from being affected.

Embodiment 3

[0042] On the basis of the above-mentioned embodiments, in this embodiment, the B-pillar 81 is provided with a B-driving structure that is in transmission connection with the B-mounting seat 87 . The driving structure is mainly used to drive the B installation seat 87 to move vertically relative to the rail, so as to avoid interference in the early installation process of the rail to be detected.

[0043] Such as figure 1 , figure 2 , image 3As shown, the B driving structure includes the B driving link 86 and the B driven link 85 arranged on both sides of the B mounting base 87, and the two ends of the B driving connecting rod 86 are connected to the B column 81 and the B mounting base 87 respectively. Hinged, the two ends of the B driven link 85 are respectively hinged with the B column 81 and the B mounting seat 87, the hinge points of the B active link 86 and the B driven link 85 are four vertices of a parallelogram, and the B The upper surface of the mount 87 is horiz...

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Abstract

The invention discloses a rail bottom section flaw detection undercarriage for a welded joint weld joint of a welded rail base steel rail. The undercarriage comprises a B stand column, B installationbases arranged on the two sides of the B stand column, B probe installation bases arranged on the B installation bases and a plurality of B probe installation grooves formed in the B probe installation bases, and the B probe installation grooves in the two B probe installation bases are symmetrically formed in the two sides of the B stand column. The rail bottom flaw detection undercarriage has the beneficial effects that the scheme is beneficial to realizing automatic flaw detection on the rail bottom section, and the flaw detection efficiency and precision are improved.

Description

technical field [0001] The invention relates to the field of ultrasonic flaw detection, in particular to a rail bottom cross-section flaw detection landing gear for welded rail base rail weld joints. Background technique [0002] With the overall speed-up, expansion and upgrading of my country's railways, as well as the rapid development of passenger dedicated lines and high-speed and heavy-haul railways, higher requirements are placed on the quality of rail welded joints. The quality control of rail welded joints directly affects railway transportation production and driving safety. Therefore, starting from the improvement of flaw detection standards and the use of new equipment, the full-section flaw detection of single and double probes for rail welds and heat-affected zones is the key to improving the ability of weld flaw detection. , The double insurance strategy to ensure that the welded joints leave the factory without damage is also an effective means to ensure the s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N29/22G01N29/265G01N29/28
CPCG01N29/225G01N29/265G01N29/28G01N2291/0234G01N2291/0289G01N2291/2675
Inventor 刘亚仑邓华段永强袁刚强胡艺徐森程勇刚周雪清刘志毅何文骥王泽斌刘长青李想段宇王建军
Owner 四川曜诚无损检测技术有限公司