A rail head side flaw detection landing gear for welded rail base rail welding joint weld

Abstract

The present invention discloses a rail head side flaw detection landing gear for weld seams of rail welding joints of welded rail bases, comprising a D mounting bracket, a D cylinder with a piston rod facing downwards arranged on the D mounting bracket, a D movable bracket drivingly connected to the piston rod of the D cylinder, and three groups of D detection structures arranged on the D movable brackets, each group of D detection structures comprising two D probe mounting brackets located on both sides of the rail and arranged symmetrically, and the three groups of D probe mounting brackets with different heights in the D detection structures. The beneficial effects of the present invention are as follows: the present scheme can detect flaws on the rail head of the rail, the use of a mechanical structure can ensure that the relative position of the probe and the rail head remains stable, which is conducive to improving the efficiency and accuracy of flaw detection, and the use of three groups of D detection structures to detect flaws on the rail head in three layers is conducive to improving the efficiency of flaw detection, and the probes are repeatedly covered to avoid missed detection.

Description

Technical Field

[0001] The invention relates to the field of ultrasonic flaw detection, in particular to a rail head side flaw detection landing gear for a weld seam of a welded rail base steel rail welded joint. Background Art

[0002] Modern railways usually weld 5 100-meter rails into a 500-meter long rail. 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 heavy-load 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, from the perspective of improving flaw detection standards and using new equipment, single-double probe full-section flaw detection of rail welds and heat-affected zones is a double insurance strategy to improve weld flaw detection capabilities and ensure that welded joints are shipped without damage. It is also an effective means to ensure railway driving safety. Especially for high-speed passenger dedicated lines, this work is particularly important.

[0003] Existing passenger dedicated lines are generally formed by welding multiple sections of short rails. In order to ensure the quality of the long rails, it is necessary to perform flaw detection at and near the welding points.

[0004] Under existing technical conditions, rail welds are usually inspected by manual flaw detection, which has the following problems:

[0005] 1. The use of manual handheld probes for flaw detection has many influencing factors, the scanning range is not comprehensive, manual identification and judgment, the flaw detection results are unreliable, and the safety technology is not guaranteed;

[0006] 2. For planar defects, the dual-probe K-type and serial flaw detection methods must be used. The operation is complicated and requires high technical level and skills of the flaw detection operators. Manual flaw detection is difficult to achieve;

[0007] 3. The flaw detection efficiency is low. The flaw detection process is a bottleneck restricting the production of the welding rail assembly line;

[0008] 4. The low level of informatization is not conducive to the preservation of flaw detection data, and the welding process cannot be improved through data statistical analysis. Summary of the invention

[0009] In order to overcome the shortcomings of the prior art, the purpose of the present invention is to provide a rail head side flaw detection landing gear for the weld of the welded rail base rail joint, which is used to detect the rail head of the rail, is conducive to realizing automated flaw detection, and improves the accuracy and efficiency of flaw detection.

[0010] The present invention is achieved through the following technical scheme: a rail head side flaw detection landing gear for the weld of a welded rail base rail welding joint, comprising a D mounting bracket, a D cylinder arranged on the D mounting bracket with a piston rod facing downward, a D movable bracket drivingly connected to the piston rod of the D cylinder, and three groups of D detection structures arranged on the D movable bracket, each group of D detection structures comprising two D probe mounting brackets located on both sides of the rail and at the same height, and D probe mounting brackets of different heights within the three groups of D detection structures.

[0011] Furthermore, in order to better realize the present invention, the D movable bracket is arranged below a D mounting plate, one end of the D mounting plate is hinged to the D movable bracket, a D adjusting cylinder is arranged between the other end of the D mounting plate and the D movable bracket, the piston rod of the D adjusting cylinder is hinged to the D mounting plate, and the cylinder body of the D adjusting cylinder is hinged to the D movable bracket; the D detection structure is arranged on the lower surface of the D mounting plate.

[0012] Furthermore, in order to better realize the present invention, the lower surface of the D mounting plate is provided with a D roller mounting support located between the same group of D probe mounting brackets, and the D roller mounting support is rotatably mounted with a D roller that can be rollingly connected to the rail.

[0013] Furthermore, in order to better implement the present invention, a D probe adjusting cylinder is provided on the D mounting plate to drive the D probe mounting bracket to move closer to or away from the rail.

[0014] Furthermore, in order to better realize the present invention, two D cylinder mounting seats are arranged on the D mounting bracket, the D cylinder is rotatably mounted between the two D cylinder mounting seats, and the piston rod of the D cylinder is hinged to the D movable bracket.

[0015] Furthermore, in order to better realize the present invention, two D adjusting springs are connected between the D mounting bracket and the D movable bracket, which are located on both sides of the D cylinder. The D adjusting spring can buffer the impact of the D cylinder pressing down and compensate for the force of the D cylinder returning to lift the D movable bracket. At the same time, it also ensures that when there is no air pressure, the D movable bracket is in the original state and does not affect the normal steel passing.

[0016] Furthermore, in order to better implement the present invention, the D mounting bracket is provided with two D cylinders located on opposite sides.

[0017] Furthermore, in order to better implement the present invention, the D mounting bracket is provided with a D limiting structure for limiting the position of the D roller mounting support.

[0018] Furthermore, in order to better realize the present invention, the D-probe mounting bracket includes a D-probe mounting base plate, two D-probe mounting vertical plates arranged on the lower surface of the D-probe mounting base plate, and a D-probe mounting seat installed between the two D-probe mounting vertical plates, and a D-probe mounting groove is arranged in the D-probe mounting seat.

[0019] Furthermore, in order to better implement the present invention, the D-probe mounting seat is movably connected to the D-probe mounting vertical plate.

[0020] The beneficial effects achieved by this scheme are: this scheme can detect flaws on the rail head of the rail, and the use of a mechanical structure can ensure that the relative position of the probe and the rail head remains stable, which is beneficial to improving the efficiency and accuracy of flaw detection, and the use of three groups of D detection structures to detect flaws on the rail head in three layers is beneficial to improving the efficiency of flaw detection and avoiding missed detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A three-dimensional schematic diagram of this scheme;

[0022] Figure 2 for Figure 1 The main view of

[0023] Figure 3 for Figure 1 Right view of;

[0024] Figure 4 This is a schematic diagram of the structure of the D probe mounting bracket;

[0025] Among them, 41-D mounting bracket, 42-D cylinder mounting seat, 43-D cylinder, 44-D movable bracket, 45-D slide rail, 46-D mounting plate, 47-D probe mounting bracket, 471-D probe mounting base plate, 472-D probe mounting seat, 473-D probe mounting vertical plate, 474-D probe mounting slot, 48-D roller mounting support, 49-roller, 410-D adjusting cylinder, 411-D limiting structure, 412-D mounting bracket connecting structure. DETAILED DESCRIPTION

[0026] The present invention is further described in detail below in conjunction with examples, but the embodiments of the present invention are not limited thereto.

[0027] Embodiment 1:

[0028] like Figure 1 , Figure 2As shown, in this embodiment, a rail head side flaw detection landing gear for the weld of a welded rail base rail welding joint comprises a D mounting bracket 41, a D cylinder 43 with a piston rod facing downwards arranged on the D mounting bracket 41, a D movable bracket 44 drivingly connected to the piston rod of the D cylinder 43, and three groups of D detection structures arranged on the D movable bracket 44, each group of D detection structures comprises two D probe mounting brackets 47 located on both sides of the rail and at the same height, and the three groups of D probe mounting brackets 47 have different heights.

[0029] When it is necessary to detect the flaws of the rail, the rail is transferred and positioned under the scheme, and the scheme is driven to move downward until the rail is located between the same group of D probe mounting brackets 47, and the flaw detection is performed using the probe in the D probe mounting bracket 47. The rail and the D probe mounting bracket 47 are moved relative to each other, so that a certain section of the rail can be detected within the range of motion. The scheme is conducive to realizing braked flaw detection, and can ensure that the distance between the probe and the rail remains unchanged, thereby helping to improve the efficiency and accuracy of flaw detection.

[0030] Since the rail head is relatively high and cannot be covered by a single ultrasonic probe, this solution uses three groups of D detection structures with different heights. There is repeated coverage in the three groups of probes, so that the three groups of probes with different heights can perform flaw detection on the rail head in three layers respectively, thereby improving the efficiency of flaw detection.

[0031] In this embodiment, two D slide rails 45 located on both sides of the D cylinder 43 can be provided on the D mounting bracket 41, so that the D movable bracket 44 is slidably connected to the D slide rails 45, which is beneficial to improve the movement accuracy and stability of the D movable bracket 44.

[0032] Embodiment 2:

[0033] like Figure 2 , Figure 3 As shown, on the basis of the above embodiment, in this embodiment, the D movable bracket 44 is arranged below the D mounting plate 46, one end of the D mounting plate 46 is hinged to the D movable bracket 44, and a D adjusting cylinder 410 is arranged between the other end of the D mounting plate 46 and the D movable bracket 44, the piston rod of the D adjusting cylinder 410 is hinged to the D mounting plate 46, and the cylinder body of the D adjusting cylinder 410 is hinged to the D movable bracket 44; the D detection structure is arranged on the lower surface of the D mounting plate 46.

[0034] Due to factors such as processing errors and assembly errors, the rail may be slightly tilted compared to the present solution, so that the D mounting plate 46 is hinged to the D movable bracket 44, and the D adjusting cylinder 410 is used to change the angle of the D mounting plate 46, thereby adjusting the angle between the probe and the rail, so that the positional relationship between the probe and the rail meets the requirements of flaw detection.

[0035] like Figure 1 , Figure 2 , Figure 3 As shown, in this embodiment, the lower surface of the D mounting plate 46 is provided with a D roller mounting support 48 located between the same group of D probe mounting brackets 47, and a D roller 49 capable of rolling connection with the rail is rotatably mounted on the D roller mounting support 48.

[0036] During flaw detection, the D roller 49 is brought into contact with the rail, which can play a positioning role and ensure that the height position of the probe and the rail meets the requirements of flaw detection. During continuous flaw detection of the rail, the probe and the rail are relatively displaced. The D roller 49 can play a guiding and limiting role to keep the position of the probe stable. The friction is rolling friction, which is beneficial to reduce wear, reduce the noise caused by the friction between the wear-resistant plate and the rail head tread, and maintain the stability of flaw detection.

[0037] Embodiment 3:

[0038] On the basis of the above-mentioned embodiment, in this embodiment, a D-probe adjusting cylinder for driving the D-probe mounting bracket 47 to move close to or away from the rail is provided on the D-mounting plate 46. Before flaw detection, in order to avoid interference, the D-probe adjusting cylinder is used to drive the D-probe mounting bracket 47 to move in a direction away from the rail, so that the distance between the same group of D-probe mounting brackets 47 is increased, thereby avoiding collision during the downward movement of the D-probe mounting bracket 47. After the rail contacts the D roller 49, the D-probe adjusting cylinder is used to drive the D-probe mounting bracket 47 to move in a direction close to the rail, thereby adjusting the distance between the probe and the rail, thereby avoiding that the distance between the probe and the rail is too large to affect the accuracy of flaw detection.

[0039] Embodiment 4:

[0040] like Figure 2 As shown, based on the above embodiment, in this embodiment, two D cylinder mounting seats 42 are provided on the D mounting bracket 41, the D cylinder 43 is rotatably mounted between the two D cylinder mounting seats 42, and the piston rod of the D cylinder 43 is hinged to the D movable bracket 44.

[0041] When there are factors such as installation error and processing error, there may be a certain deviation between the piston rod axis of the D cylinder 43 and the moving direction of the D movable bracket 44. The D cylinder 43 is rotatably installed between the two D cylinder mounting seats 42, and the piston rod of the D cylinder 43 is hinged to the D movable bracket 44. When the piston rod of the D cylinder 43 is extended, the position of the D cylinder 43 can be adaptively adjusted, so that the piston rod axis of the D cylinder 43 and the moving direction of the D movable bracket 44 are consistent to avoid interference.

[0042] In this embodiment, two D adjusting springs are connected between the D mounting bracket 41 and the D movable bracket 44, which are respectively located on both sides of the D cylinder 43. In this embodiment, the D adjusting spring can be used to keep the D movable bracket 44 stable during the movement of the D movable bracket 44, so that the probe and other structures under the D movable bracket 44 can be kept stable to avoid affecting the flaw detection accuracy.

[0043] like Figure 3 As shown, in this embodiment, two D cylinders 43 are provided on opposite sides of the D mounting bracket 41. The two D cylinders 43 are used to synchronously drive the D movable bracket 44, which is beneficial to improve the stability and position accuracy of the D movable bracket 44 and prevent the probe from tilting relative to the rail.

[0044] In this embodiment, the D mounting bracket 41 is provided with a D limiting structure 411 for limiting the position of the D roller mounting support 48. The D limiting structure 411 is used to control the movement range of the D movable bracket 44 to prevent the structure from being damaged by impact.

[0045] Embodiment 5:

[0046] like Figure 4 As shown, based on the above embodiment, in this embodiment, the D probe mounting bracket 47 comprises a D probe mounting base plate 471, two D probe mounting vertical plates 473 arranged on the lower surface of the D probe mounting base plate 471, and a D probe mounting seat 472 installed between the two D probe mounting vertical plates 473, and a D probe mounting slot 474 is arranged in the D probe mounting seat 472. The D probe mounting slot 474 is a through slot, and the opening points to the rail. In the same group of D flaw detection structures, the D probe mounting slot 474 in one D probe mounting bracket 47 is installed with an ultrasonic transmitting probe, and the other D probe mounting slot 474 is installed with an ultrasonic receiving probe. The ultrasonic wave emitted by the ultrasonic transmitting probe is inclined with respect to the length direction of the rail.

[0047] In this embodiment, the D-probe mounting seat 472 is movably connected to the D-probe mounting vertical plate 473. The movably connected includes one or more of a rotating connection and a sliding connection. The D-probe mounting seat 472 is movably connected to the D-probe mounting vertical plate 473. After the D-probe mounting seat 472 contacts the rail and is subjected to the reaction force of the rail, the relative position of the D-probe mounting seat 472 and the rail is adaptively adjusted under the action of the reaction force, thereby ensuring that the D-probe mounting seat 472 and the rail can fit together, which is conducive to improving the accuracy of flaw detection.

[0048] The D-probe mounting seat 472 can be provided with a water outlet hole, so that the water outlet hole is connected to a water source. During flaw detection, water is supplied between the rail and the D-probe mounting seat 472 through the water outlet hole, and water is used as a coupling agent required for flaw detection. The D-probe mounting seat 472 can be provided with a protrusion that contacts the rail. The protrusion contacts the rail, and a small gap is formed between the D-probe mounting seat 472 and the rail to allow water to flow.

[0049] Embodiment 6:

[0050] On the basis of the above-mentioned embodiment, in this embodiment, the D mounting bracket 41 is provided with a D mounting bracket connection structure 412, and the D mounting bracket connection structure 412 adopts a flange, and the D mounting bracket connection structure 412 is convenient for connection with other structures. In this embodiment, the D mounting bracket connection structure 412 is connected to the motor through a transmission chain, and the D mounting bracket 41 can be driven to rotate under the drive of the motor, so as to change the position of the probe. After the probe completes the flaw detection work of the rail in one direction, the probe is driven to rotate 180° by rotating the D mounting bracket 41, and the probe is used to detect the flaws in the rail in the reverse direction to detect defects in different directions, which can improve the accuracy of flaw detection and avoid missed detection.

[0051] In this embodiment, other contents not described are the same as those in the above embodiment, and thus will not be described in detail.

[0052] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any simple modification or equivalent change made to the above embodiment based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A rail head side flaw detection landing gear for welded rail base rail welded joint weld, characterized in that: It comprises a D mounting bracket (41), a D cylinder (43) disposed on the D mounting bracket (41) and having a piston rod facing downward, a D movable bracket (44) drivingly connected to the piston rod of the D cylinder (43), and three groups of D detection structures disposed on the D movable brackets (44), each group of D detection structures comprising two D probe mounting brackets (47) located on both sides of the rail and at the same height, and the heights of the D probe mounting brackets (47) in the three groups of D detection structures are different; The D-probe mounting bracket (47) comprises a D-probe mounting base plate (471), two D-probe mounting vertical plates (473) arranged on the lower surface of the D-probe mounting base plate (471), and a D-probe mounting seat (472) installed between the two D-probe mounting vertical plates (473); a D-probe mounting slot (474) is arranged in the D-probe mounting seat (472); the D-probe mounting slot (474) is a through slot, and the opening is directed toward the rail; in the same set of D flaw detection structures, an ultrasonic transmitting probe is installed in the D-probe mounting slot (474) in one D-probe mounting bracket (47), and an ultrasonic receiving probe is installed in the other D-probe mounting slot (474); a water outlet hole connected to a water source is arranged on the D-probe mounting seat (472), and a protrusion contacting the rail is arranged on the D-probe mounting seat (472); and a D-mounting bracket connecting structure (412) is arranged on the D-mounting bracket (41).

2. A rail head side flaw detection landing gear for welded rail base rail welded joint weld according to claim 1, characterized in that: A D mounting plate (46) is arranged below the D movable bracket (44); one end of the D mounting plate (46) is hinged to the D movable bracket (44); a D adjusting cylinder (410) is arranged between the other end of the D mounting plate (46) and the D movable bracket (44); a piston rod of the D adjusting cylinder (410) is hinged to the D mounting plate (46); and a cylinder body of the D adjusting cylinder (410) is hinged to the D movable bracket (44); and the D detection structure is arranged on the lower surface of the D mounting plate (46).

3. A rail head side flaw detection landing gear for welded rail base rail welded joint weld according to claim 2, characterized in that: The lower surface of the D mounting plate (46) is provided with a D roller mounting support (48) located between the same group of D probe mounting brackets (47), and a D roller (49) capable of rolling connection with the rail is rotatably mounted on the D roller mounting support (48).

4. A rail head side flaw detection landing gear for welded rail base rail welded joint weld according to claim 2, characterized in that: The D mounting plate (46) is provided with a D probe adjusting cylinder for driving the D probe mounting bracket (47) to move closer to or away from the rail.

5. A rail head side flaw detection landing gear for weld seams of welded rail base rail joints according to any one of claims 1, 2, 3, and 4, characterized in that: The D mounting bracket (41) is provided with two D cylinder mounting seats (42), the D cylinder (43) is rotatably mounted between the two D cylinder mounting seats (42), and the piston rod of the D cylinder (43) is hinged to the D movable bracket (44).

6. A rail head side flaw detection landing gear for welded rail base rail welded joint weld according to claim 5, characterized in that: Two D adjusting springs are connected between the D mounting bracket (41) and the D movable bracket (44) and are respectively located on both sides of the D cylinder (43).

7. A rail head side flaw detection landing gear for welded rail base rail welded joint weld according to claim 5, characterized in that: The D mounting bracket (41) is provided with two D cylinders (43) located on two opposite sides.

8. The rail head side flaw detection landing gear of the welded rail base rail welded joint weld according to claim 5, characterized in that: The D mounting bracket (41) is provided with a D limiting structure for limiting the position of the D roller mounting support (48).

9. The rail head side flaw detection landing gear of the welded rail base rail welded joint weld according to claim 1, characterized in that: The D-probe mounting seat (472) is movably connected to the D-probe mounting vertical plate (473).

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