A combined flaw detection landing gear for the weld of the rail welding joint in a rail welding base

Abstract

The present invention discloses a combined flaw detection landing gear for the weld seam of the rail welding joint in the rail welding base, which includes an E mounting bracket, an E cylinder, an E movable bracket, an E probe mounting bracket, and an E probe mounting seat arranged in the E probe mounting bracket; the E probe mounting seat includes a web probe mounting seat and a jaw probe mounting seat. A plurality of web probes for emitting ultrasonic waves downward are installed in the web probe mounting seat, and the web probes are distributed along the same straight line. A plurality of jaw probes for emitting ultrasonic waves downward are installed in the jaw probe mounting seat, and the jaw probes are inclined with respect to the length direction of the rail and the inclination angle of each jaw probe is different. The beneficial effects of the present invention are as follows: This solution can perform flaw detection on the web or jaw of the rail, and is conducive to realizing automatic flaw detection, improving the accuracy and efficiency of flaw detection, being able to perform flaw detection from both positive and negative directions, ensuring the detection of defects at different angles, and improving the flaw detection accuracy.

Description

Technical Field

[0001] The present invention relates to the field of ultrasonic flaw detection, and specifically, to a combined flaw detection landing gear for the weld seam of the rail welding joint at the rail welding base. Background Art

[0002] Modern railways usually use five 100-meter steel rails welded into a 500-meter long rail. With the comprehensive speed increase, capacity expansion, and upgrade of China's railways, as well as the rapid development of passenger dedicated lines and high-speed heavy-haul railways, higher requirements are put forward for the quality of rail welding joints. The quality control of rail welding joints directly affects railway transportation production and train operation safety. Therefore, starting from improving the flaw detection standard and using new equipment, realizing single and double probe full-section flaw detection for rail weld seams and heat-affected zones is a double-insurance strategy to improve the flaw detection and inspection ability of weld seams and ensure that welded joints are defect-free when leaving the factory, and it is also an effective means to ensure railway train operation safety. Especially for high-speed passenger dedicated lines, this work is particularly important.

[0003] Existing passenger dedicated lines are generally formed by welding multiple short rails. In order to ensure the quality of long rails, flaw detection needs to be carried out at and near the welding points.

[0004] Under the existing technical conditions, the rail weld seams are usually detected by manual flaw detection, and the following problems exist:

[0005] 1. When using a manual hand-held probe for flaw detection, there are many influencing factors, the scanning range is not comprehensive, manual recognition and judgment are carried out, the flaw detection results are unreliable, and there is no guarantee for safety technology;

[0006] 2. For planar defects, the double-probe K-type and tandem flaw detection methods must be used, the operation is complex, the technical level and skills requirements for flaw detection operators are high, and manual flaw detection is difficult to achieve;

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

[0008] 4. The informatization level is low, which 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 deficiencies of the existing technology, the purpose of the present invention is to provide a combined flaw detection landing gear for the weld seam of the rail welding joint at the rail welding base, which can perform flaw detection from both positive and negative directions, ensuring the detection of defects at different angles and improving the flaw detection accuracy.

[0010] The present invention is realized by the following technical scheme: a combined flaw detection landing gear for weld seams of welded rail base rail welding joints, comprising an E mounting bracket, an E cylinder arranged on the E mounting bracket with a piston rod facing downward, an E movable bracket drivingly connected to the piston rod of the E cylinder, an E probe mounting bracket arranged below the E movable bracket, and an E probe mounting seat arranged in the E probe mounting bracket;

[0011] The E probe mounting seat includes a rail waist probe mounting seat and a jaw probe mounting seat. A plurality of rail waist probes for emitting ultrasonic waves downward are installed in the rail waist probe mounting seat. The rail waist probes are distributed along the same straight line. A plurality of jaw probes for emitting ultrasonic waves downward are installed in the jaw probe mounting seat. The jaw probes are inclined with respect to the length direction of the rail and each jaw probe is inclined at a different angle.

[0012] Furthermore, in order to better realize the present invention, two E cylinders are arranged on the same side of the E mounting bracket, each E cylinder is independently connected to an E movable bracket, a waist probe mounting seat is arranged in one of the E probe mounting brackets, and a chin probe mounting seat is arranged in the other E probe mounting bracket.

[0013] Furthermore, in order to better implement the present invention, the E-probe mounting seat is movably connected to the E-probe mounting bracket.

[0014] Furthermore, in order to better implement the present invention, the movable connection includes a rotating connection and a sliding connection along the vertical direction.

[0015] Furthermore, in order to better realize the present invention, the E mounting bracket is provided with an E slide rail parallel to the E cylinder piston rod, and the E movable bracket is slidably connected to the E slide rail.

[0016] Furthermore, in order to better realize the present invention, the E mounting bracket is provided with E cylinder mounting seats located on both sides of the E cylinder, the E cylinder is hinged to the E cylinder mounting seats, and the piston rod of the E cylinder is hinged to the E movable bracket.

[0017] Furthermore, in order to better implement the present invention, E springs connected between the E movable bracket and the E mounting bracket are arranged on both sides of the E cylinder.

[0018] Furthermore, in order to better realize the present invention, two E guide wheels are arranged on the E probe mounting seat, which are respectively located on both sides of the rail and can be rollingly connected to the rail, and the rotation center of the E guide wheel is arranged vertically.

[0019] Furthermore, in order to better implement the present invention, the lower end of the E guide wheel is a frustum whose diameter gradually decreases downward.

[0020] Furthermore, in order to better realize the present invention, the E movable bracket is hinged to the E probe mounting bracket at one end along the length direction of the rail, and the other end of the E movable bracket is provided with an E guide shaft slidingly connected to the E probe mounting bracket, and a compression spring mounted on the E guide shaft is provided between the E movable bracket and the E probe mounting bracket.

[0021] The beneficial effects achieved by this scheme are: this scheme can realize flaw detection on the waist or jaw of the rail, and is conducive to realizing automated flaw detection, can improve the accuracy and efficiency of flaw detection, can perform flaw detection from both positive and negative directions, ensure the detection of defects at different angles, and improve the flaw detection accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A three-dimensional schematic diagram of this scheme;

[0023] Figure 2 for Figure 1 The main view;

[0024] Figure 3 for Figure 1 Enlarged view of point E

[0025] Among them, 51-E mounting bracket, 52-E cylinder, 53-E cylinder mounting seat, 54-E movable bracket, 55-E adjusting cylinder, 56-E probe mounting bracket, 561-rail waist probe mounting seat, 562-lower jaw probe mounting seat, 57-E limiting structure, 58-E slide rail, 59-E guide wheel, 591-guide wheel limiting plate, 592-opening slot, 593-guide wheel limiting block, 594-adjustment plate, 510-E 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 2 As shown, in this embodiment, a combined flaw detection landing gear for weld seams of welded rail base rail welding joints includes an E mounting bracket 51, an E cylinder 52 with a piston rod facing downwards, an E movable bracket 54 drivingly connected to the piston rod of the E cylinder 52, an E probe mounting bracket 56 disposed below the E movable bracket 54, and an E probe mounting seat disposed in the E probe mounting bracket 56;

[0029] The E probe mounting seat includes a rail waist probe mounting seat 561 and a jaw probe mounting seat 562. The rail waist probe mounting seat 561 is equipped with a plurality of rail waist probes for emitting ultrasonic waves downward, and the rail waist probes are distributed along the same straight line. The jaw probe mounting seat 562 is equipped with a plurality of jaw probes for emitting ultrasonic waves downward, and the jaw probes are inclined with respect to the length direction of the rail, and each jaw probe is inclined at a different angle.

[0030] When it is necessary to inspect the rail, the rail is installed under the E probe mounting seat, and the waist probe mounting seat 561 is aligned with the waist of the rail to facilitate inspection of the waist, or the lower jaw probe mounting seat 562 is aligned with the lower jaw on one side of the rail to facilitate inspection of the lower jaw. In this embodiment, an ultrasonic probe is used to emit ultrasonic waves for inspection.

[0031] This solution is connected with a track sliding parallel to the rail, which is conducive to realizing automatic control. It can realize automatic control of the E probe mounting seat to move along the length direction of the rail to perform flaw detection within the required range, and is conducive to maintaining the relative position of the probe and the rail stable, so as to improve the efficiency and accuracy of flaw detection.

[0032] The E cylinder 52 can be used to drive the E movable bracket 54 to move up and down to adjust the distance between the probe and the rail, so that during the installation of the rail, the E probe mounting bracket 56 and other structures can be prevented from interfering with the installation of the rail. The E probe mounting bracket 56 can also be remotely controlled to move up and down for easy operation.

[0033] Embodiment 2:

[0034] On the basis of the above embodiments, in this embodiment, two E cylinders 52 are arranged on the same side of the E mounting bracket 51, and each E cylinder 52 is independently connected to an E movable bracket 54, wherein a rail waist probe mounting seat 561 is arranged in one of the E probe mounting brackets 56, and a lower jaw probe mounting seat 562 is arranged in the other E probe mounting bracket 56.

[0035] In this way, two sets of detection equipment can be installed on the same E mounting bracket 51, so that the flaw detection of the rail waist and the flaw detection of the lower jaw can be carried out simultaneously, which is beneficial to reducing the space occupied by the structure, reducing the production cost of the equipment, and improving the efficiency of flaw detection.

[0036] In this embodiment, two E cylinders 52 can be symmetrically arranged on opposite sides of the E mounting bracket 51 and connected to an E movable bracket 54 at the same time, so that both opposite sides of the E movable bracket 54 can be supported, which is beneficial to improving the stability and position accuracy of the E movable bracket 54.

[0037] Embodiment 3:

[0038] Based on the above embodiments, in this embodiment, the E-probe mounting seat is movably connected to the E-probe mounting bracket 56. When detecting the steel rail, it is necessary to make the E-probe mounting seat contact the steel rail. However, due to factors such as machining errors and assembly errors, it is difficult for the E-probe mounting seat to completely fit the steel rail and there are certain deviations, resulting in a reduction in detection accuracy. Making the E-probe mounting seat movably connected to the E-probe mounting bracket 56 can utilize the movable self-adaptation adjustment of the E-probe mounting seat to eliminate unnecessary deviations between the E-probe mounting seat and the steel rail, thereby ensuring the relative position accuracy between the probe and the steel rail and avoiding the influence on detection accuracy.

[0039] In this embodiment, the movable connection includes a rotational connection and a sliding connection in the vertical direction.

[0040] Making the E-probe mounting seat rotatably connected to the E-probe mounting bracket 56, after the E-probe mounting seat contacts the steel rail and receives the reaction force from the steel rail, it can self-adjust the angle between the E-probe mounting seat and the steel rail.

[0041] Making the E-probe mounting seat slidably connected to the E-probe mounting bracket 56, after the E-probe mounting seat contacts the steel rail and receives the reaction force from the steel rail, it can self-adjust the position between the E-probe mounting seat and the steel rail.

[0042] In this embodiment, both ends of the web-probe mounting seat 561 are movably connected to the E-probe mounting bracket 56 through linear bearings, and the front and rear ends of the jaw-probe mounting seat 562 are movably connected to the E-probe mounting bracket 56 through linear bearings.

[0043] This can meet the requirements of the web-probe mounting seat 561 and the jaw-probe mounting seat 562 for moving forward and backward and rotating.

[0044] Linear bearings are arranged in the front and rear of the web-probe box 561 and the jaw of the rail head 562, and the probe box can move in the direction parallel to the axis of the linear bearing.

[0045] Embodiment 4:

[0046] Based on the above embodiments, in this embodiment, a water outlet hole is provided on the E-probe mounting seat, and the water outlet hole is connected to a water source. During the detection process, water can be supplied outward from the water outlet hole to serve as the coupling agent required for detection. Small protrusions can be provided on the surface of the E-probe mounting seat that contacts the steel rail to leave the required gap between the E-probe mounting seat and the steel rail for the circulation of water.

[0047] Embodiment 5:

[0048] Based on the above embodiments, in this embodiment, an E slide rail 58 parallel to the piston rod of the E cylinder 52 is provided on the E mounting bracket 51, and the E movable bracket 54 is slidably connected to the E slide rail 58.

[0049] The E slide rail 58 can guide and limit the movement of the E movable bracket 54, which is beneficial to improving the stability of the E movable bracket 54, avoiding shaking during its movement, and preventing the relative position accuracy between the probe and the rail from being affected.

[0050] In this embodiment, E cylinder mounting seats 53 are arranged on the E mounting bracket 51 on both sides of the E cylinder 52. The E cylinder 52 is hinged to the E cylinder mounting seats 53, and the piston rod of the E cylinder 52 is hinged to the E movable bracket 54.

[0051] Due to factors such as machining errors, assembly errors, and wear, there may be a certain deviation between the moving direction of the piston rod of the E cylinder 52 and the length direction of the E slide rail 58, resulting in an interference phenomenon. Hinging the E cylinder 52 to the E cylinder mounting seats 53 and hinging the piston rod of the E cylinder 52 to the E movable bracket 54 can adaptively adjust the position and angle of the E cylinder 52 during the movement of the piston rod of the E cylinder 52, so as to ensure that the moving direction of the piston rod of the E cylinder 52 is always consistent with the length direction of the E slide rail 58, thereby avoiding unnecessary vibration and wear.

[0052] In this embodiment, E springs are arranged on both sides of the E cylinder 52 and are connected between the E movable bracket 54 and the E mounting bracket 51. The E springs can improve the stability of the E movable bracket 54 and are beneficial to keeping the position accuracy of the E movable bracket 54.

[0053] An E limiting structure 57 for limiting the lowest position of the E movable bracket 54 is arranged on the E mounting bracket 51. The E limiting structure 57 includes an L-shaped support plate and a limiting block arranged on the support plate. The limiting block is located directly below the E movable bracket 54. When the E movable bracket 54 descends to contact the limiting block, the E movable bracket 54 can no longer move downward, which is beneficial to protecting structures such as the E probe mounting seat below and avoiding damage caused by pressure.

[0054] Embodiment 6:

[0055] On the basis of the above embodiment, in this embodiment, two E guide wheels 59 that can be in rolling connection with the rail are arranged on both sides of the E probe mounting seat, and the rotation center of the E guide wheels 59 is arranged vertically.

[0056] The E guide wheels 59 can clamp the rail and limit the relative position between the E probe mounting seat and the rail to remain unchanged, which is beneficial to keeping the relative position between the probe and the rail unchanged.

[0057] The E guide wheel 59 is located at the outer end of the E probe mounting seat. When two E probe mounting brackets 56 are installed on the E mounting bracket 51, four E guide wheels 59 are formed under the E probe mounting seat. The probe is located within the range surrounded by the four E guide wheels 59, which is conducive to keeping all probes and rails in a relatively stable position to avoid affecting the accuracy of flaw detection.

[0058] In this embodiment, the lower end of the E guide wheel 59 is a frustum whose diameter gradually decreases downward.

[0059] like Figure 3 As shown, the end of the E-probe mounting bracket 56 close to the E-guide wheel 59 is provided with two guide wheel limit plates 591, and the guide wheel limit plates 591 are provided with an open slot 592 that opens outward and is horizontal, and the two open slots 592 open in opposite directions. The guide wheel limit plates 591 and the end of the E-probe mounting bracket 56 form a U-shaped structure, and the end of the E-probe mounting seat close to the guide wheel limit plate 591 is provided with an adjustment plate 594 located between the guide wheel limit plate 591 and the E-probe mounting bracket 56, and the adjustment plate 594 is respectively provided with a guide wheel limit block 593 that can slide in the open slot 592. If the rail is not aligned with the E-probe mounting seat, when the E-probe mounting bracket 56 moves downward until the E-guide wheel 59 contacts the rail, the round table surface on the E-guide wheel 59 first contacts the rail and is subjected to the reaction force of the rail. Under the action of the reaction force, the E-probe mounting seat moves along the length direction of the open slot 592 to perform adaptive adjustment until the rail can enter the position between the two E-guide wheels 59. The opening directions of the two opening slots 592 are opposite, and the guide wheel limit block 593 and the opening slot 592 can be used to limit each other to prevent the guide wheel limit block 593 from detaching from the opening slot 592, thereby preventing the E-probe mounting base from falling off.

[0060] In this embodiment, mounting shafts are provided on both sides of the E probe mounting seat, the E guide wheel 59 is slidably provided on the mounting shafts, a spring sleeved on the mounting shafts is provided between the E guide wheel 59 and the E probe mounting seat, and a limiting structure for limiting the E guide wheel 59 is provided at the end of the mounting shaft. In this way, the distance between the E guide wheel 59 and the E probe mounting seat can be adjusted, which is conducive to keeping the E probe mounting seat consistent with the center of the rail, thereby ensuring the accuracy of flaw detection.

[0061] Embodiment 7:

[0062] Based on the above embodiments, in this embodiment, one end of the E movable bracket 54 along the length direction of the rail is hinged to the E probe mounting bracket 56, and the other end of the E movable bracket 54 is provided with an E guide shaft 55 slidably connected to the E probe mounting bracket 56. A compression spring sleeved on the E guide shaft 55 is arranged between the E movable bracket 54 and the E probe mounting bracket 56.

[0063] Due to factors such as machining errors, assembly errors, and wear, there is a certain angular deviation between the E probe mounting seat and the upper surface of the rail, resulting in the inability of the E probe mounting seat to fit the rail.

[0064] One end of the E movable bracket 54 is hinged to the E probe mounting bracket 56, and the other end of the E movable bracket 54 is slidably connected to the E probe mounting bracket 56. After the E probe mounting bracket 56 contacts the rail, the position of the E probe mounting bracket 56 can be adaptively adjusted, so that the E probe mounting bracket 56 can fit the rail, which is convenient for the E probe mounting seat to fit the rail, thus helping to ensure the accuracy of flaw detection. The compression spring can apply a pressing force to the E probe mounting bracket 56, so that during the relative movement between the E probe mounting bracket 56 and the rail, the E probe mounting bracket 56 always remains in contact with the rail, ensuring that the relative position accuracy between the E probe mounting seat and the rail is not damaged.

[0065] Embodiment 8:

[0066] Based on the above embodiments, in this embodiment, an E connection structure 510 is provided above the E mounting bracket 51. The E connection structure 510 facilitates connection with other structures. In this embodiment, the E connection structure 510 adopts a flange.

[0067] In this embodiment, the other un-described content is the same as that of the above embodiments, so it will not be repeated.

[0068] The above is only a preferred embodiment of the present invention, and does not impose any form of limitation on the present invention. Any simple modification or equivalent change made to the above embodiments based on the technical essence of the present invention shall fall within the protection scope of the present invention.

Claims

1. A combined flaw detection landing gear for the weld seam of the rail welding joint in a rail welding base, characterized in that: It includes an E mounting bracket (51), an E cylinder (52) disposed on the E mounting bracket (51) with the piston rod facing downwards, an E movable bracket (54) drivingly connected to the piston rod of the E cylinder (52), an E probe mounting bracket (56) disposed below the E movable bracket (54), and an E probe mounting seat disposed within the E probe mounting bracket (56); The E probe mounting seat includes a web probe mounting seat (561) and a jaw probe mounting seat (562). A plurality of web ultrasonic probes for detecting the web of the rail are mounted within the web probe mounting seat (561), and the web probes are distributed along the same straight line. A plurality of jaw ultrasonic probes for detecting the lower jaw portion of the rail head are mounted within the jaw probe mounting seat (562). The jaw probes are inclined with respect to the length direction of the rail and each jaw probe has a different inclination angle; The E probe mounting seat is movably connected to the E probe mounting bracket (56); Two E guide wheels (59) are disposed on the E probe mounting seat, which are respectively located on both sides of the rail and can be in rolling connection with the rail. The rotation center of the E guide wheel (59) is vertically disposed; At one end of the E probe mounting bracket (56) close to the E guide wheel (59), two guide wheel limiting plates (591) are provided. An outwardly opening and horizontal opening groove (592) is formed on the guide wheel limiting plate (591), and the openings of the two opening grooves (592) face in opposite directions. The guide wheel limiting plate (591) and the end of the E probe mounting bracket (56) form a U-shaped structure. An adjusting plate (594) located between the guide wheel limiting plate (591) and the E probe mounting bracket (56) is provided at one end of the E probe mounting seat close to the guide wheel limiting plate (591). Guide wheel limiting blocks (593) capable of sliding within the opening groove (592) are respectively provided on the adjusting plate (594). The lower end of the E guide wheel (59) is a conical surface with a diameter gradually decreasing downwards; One end of the E movable bracket (54) along the length direction of the rail is hinged to the E probe mounting bracket (56), and an E guide shaft (55) slidably connected to the E probe mounting bracket (56) is provided at the other end of the E movable bracket (54). A compression spring sleeved on the E guide shaft (55) is provided between the E movable bracket (54) and the E probe mounting bracket (56).

2. The combined flaw detection landing gear for the weld of the rail welding joint in the rail welding base according to claim 1, characterized in that: Two E cylinders (52) are provided on the same side of the E mounting bracket (51), and each E cylinder (52) is independently drivingly connected to an E movable bracket (54). A web probe mounting seat (561) is provided within one of the E probe mounting brackets (56), and a jaw probe mounting seat (562) is provided within the other E probe mounting bracket (56).

3. The combined flaw detection landing gear for the weld of the rail welding joint in the rail welding base according to claim 1, characterized in that: The movable connection includes a rotational connection and a sliding connection in the vertical direction.

4. A combined flaw detection landing gear for the weld of the rail welding joint at the rail welding base according to any one of claims 1, 2, and 3, characterized in that: An E slide rail (58) parallel to the piston rod of the E cylinder (52) is provided on the E mounting bracket (51), and the E movable bracket (54) is slidably connected to the E slide rail (58).

5. The combined flaw detection landing gear for the weld seam of the rail welding joint at the rail welding base according to claim 4, characterized in that: The described E mounting bracket (51) is provided with E cylinder mounting seats (53) located on both sides of the E cylinder (52). The E cylinder (52) is hinged to the E cylinder mounting seats (53), and the piston rod of the E cylinder (52) is hinged to the E movable bracket (54).

6. The combined flaw detection landing gear for the weld of the rail welding joint at the rail welding base according to claim 5, characterized in that: On both sides of the described E cylinder (52), there are E springs connected between the E movable bracket (54) and the E mounting bracket (51).

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