Rail bottom side 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 sonic/ultrasonic/infrasonic waves, which can solve the problems of inability to improve the welding process, stress concentration, and reduce the effective cross-section of the rail to improve efficiency. And the accuracy of flaw detection, the effect of automatic control

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] like figure 1 As shown, in this embodiment, a rail bottom side flaw detection landing gear for the welded rail base rail welding joint weld seam includes a rail bottom flaw detection base 71 located below the rail 12, two A on the rail bottom flaw detection base 71 The transmitting structure 76 and two A receiving structures 78 arranged on the rail bottom flaw detection base 71, the A transmitting structure 76 corresponds to the A receiving structure 78 and is respectively arranged on both sides of the rail 12;

[0036] The A transmitting structure 76 includes the A transmitting probe that sends the A ultrasonic wave inclined to the length direction of the rail 12, and the A receiving structure 78 includes several A receiving probes that receive the A ultrasonic wave, and the A receiving probe receives the A ultrasonic wave in a vertical direction. In the emission direction of A ultrasonic wave;

[0037] The directions in which the two A transmitting probes emit ultras...

Embodiment 2

[0045]On the basis of the above-mentioned embodiments, in this embodiment, the rail bottom flaw detection base 71 is provided with two rail bottom flaw detection structure drive devices that can respectively drive the A transmitting structure 76 and the A receiving structure 78 away from or close to the rail 12 75. Utilizing the driving device 75 of the rail bottom flaw detection structure, the distance between the A transmitting structure 76 or the A receiving structure 78 and the rail 12 can be adjusted. When the rail 12 is placed, the A transmitting structure 76 and the A receiving structure 78 are controlled to be far away from the rail 12, which is convenient for installation 1. Place the steel rail 12 to avoid structural damage caused by collision. After the rail is placed, the A transmitting structure 76 or the A receiving structure is moved inwards and close to the rail 12 to reduce external interference and avoid affecting the detection accuracy.

[0046] like figu...

Embodiment 3

[0069] like figure 1 , Figure 5 As shown, on the basis of the above embodiments, in this embodiment, a flaw detection base lifting mechanism 72 is provided under the rail bottom flaw detection base 71, and a flaw detection base mounting seat 73 is disposed under the flaw detection base lifting mechanism 72, The flaw detection base lifting mechanism 72 is transmission-connected with a flaw detection base drive structure 74 . The flaw detection base driving structure 74 is used to drive the flaw detection base lifting mechanism 72, which can drive the rail bottom flaw detection base 71 to move in the vertical direction to facilitate the control of the rail bottom flaw detection base 71 lifting, so that after the rail 12 that needs flaw detection is installed, the rail bottom flaw detection The base 71 is moved into place, so as to prevent the transmission and positioning of the rail 12 from being affected by the rail bottom flaw detection base 71 and the structure above it.

...

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Abstract

The invention discloses a rail bottom side flaw detection undercarriage for a welded joint weld joint of a welded rail base steel rail. The rail bottom flaw detection device comprises a rail bottom flaw detection base located under a steel rail, two transmitting structures A arranged on the rail bottom flaw detection base and two receiving structures A arranged on the rail bottom flaw detection base, and the transmitting structures A and the receiving structures A are in one-to-one correspondence and are arranged at the two sides of the steel rail respectively; the transmitting structure A comprises a transmitting probe A of which the transmitted ultrasonic wave A is inclined to the length direction of the steel rail, the receiving structure A comprises a plurality of receiving probes A for receiving the ultrasonic wave A, and the direction of receiving the ultrasonic wave A by the receiving probes A is vertical to the transmitting direction of the ultrasonic wave A; and the directionsof the ultrasonic waves emitted by the two emission probes A are not parallel. The steel rail flaw detection device has the beneficial effects that flaw detection can be conducted on the rail bottomside of the steel rail, automatic control can be achieved, and the flaw detection efficiency and the flaw detection precision can be improved.

Description

technical field [0001] The invention relates to the field of ultrasonic flaw detection, in particular to a rail bottom side flaw detection landing gear for welded rail base rail welded seams. 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 safety of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N29/22G01N29/265G01N29/28
CPCG01N29/225G01N29/265G01N29/28G01N2291/0234G01N2291/0289G01N2291/105G01N2291/2675
Inventor 段宇段永强蒲礼国曾富刘志毅唐阳军刘亚仑袁刚强刘长青王泽斌李想
Owner 四川曜诚无损检测技术有限公司
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