High-speed tunnel steel arch intelligent laser beam welding equipment

Abstract

The application discloses a kind of high-speed tunnel steel arch frame intelligent laser beam welding equipment, it includes: conveying table, which is provided with a hanging bracket above, the hanging bracket is installed with horizontal guide rail one, lifting cylinder is installed on horizontal guide rail one, lifting cylinder lower end is connected with hanging plate, and a plurality of clamping assemblies are provided on the hanging plate;Detection device is arranged below the hanging bracket, for detecting the inclined state of the arc steel end face;Adjusting device is arranged on the adjacent side of the detection device, adjusting frame is installed on it, adjusting frame is respectively provided with feeding device for connecting plate feeding, positioning device for arc steel end face center positioning and welding device.

Description

Technical Field

[0001] This invention relates to the field of welding technology, specifically to an intelligent laser beam welding device for high-speed tunnel steel arch frames. Background Technology

[0002] In the production of steel arch frames for high-speed tunnels, it is generally necessary to weld curved steel to connecting plates to assemble the steel arch frame. Currently, there are slight differences in the springback of curved steel after bending, making it difficult to accurately control the tilt angle and center position of the end face. This can easily lead to welding misalignment or stress concentration. Secondly, existing technologies mostly use fixed structures for clamping curved steel, which cannot adapt to different curvatures of the surface, easily causing unstable clamping or workpiece wear. In addition, positioning and adjustment rely on manual experience, making it difficult to achieve high-precision alignment between the connecting plate and the center of the curved steel end face, resulting in low welding efficiency and poor product consistency.

[0003] Therefore, it is necessary to provide an intelligent laser beam welding device for high-speed tunnel steel arch frames to solve the problems mentioned in the background art. Summary of the Invention

[0004] To achieve the above objectives, the present invention provides the following technical solution: an intelligent laser beam welding device for high-speed tunnel steel arch frames, comprising:

[0005] The conveyor table has a hanger above it, a horizontal guide rail is installed on the hanger, a lifting cylinder is installed on the horizontal guide rail, a hanging plate is connected to the lower end of the lifting cylinder, and multiple clamping components are installed on the hanging plate.

[0006] The detection device, located below the hanger, is used to detect the tilting state of the curved steel end face;

[0007] An adjustment device is located on the adjacent side of the detection device. An adjustment frame is installed on the adjustment frame, which is equipped with a feeding device for feeding the connecting plate, a positioning device for positioning the center of the arc-shaped steel end face, and a welding device.

[0008] Preferably, the clamping assembly includes:

[0009] Motor 1 is mounted on a hanging plate, and its output end is connected to a hanging frame;

[0010] Telescopic cylinder one is symmetrically arranged at both ends of the hanging frame, and its output end is connected to a slide block, with a clamping roller installed at the lower end of the slide block.

[0011] Preferably, the clamping roller is equipped with a distance sensor for detecting the distance between the clamping roller and the side arc surface of the arc-shaped steel.

[0012] Preferably, the detection device includes:

[0013] The testing frame has symmetrical lifting guide rails on both sides, and a push-pull rod is installed on the lifting guide rails.

[0014] The detection plate has its two ends hinged to the output ends of two push-pull rods on a horizontal plane.

[0015] Distance sensor two is installed on push-pull rod one to measure the distance between it and the detection plate.

[0016] Preferably, the adjustment device includes:

[0017] A rotary device with a turntable mounted on its output end;

[0018] The second horizontal guide rail is set on the turntable and passes through the center of the turntable, and the adjustment frame is installed on the second horizontal guide rail.

[0019] Preferably, the feeding device includes:

[0020] The second lifting guide rail is symmetrically arranged on both sides of the adjustment frame;

[0021] The feeding seat has its two ends connected to the lifting guide rails on both sides via push-pull rods.

[0022] Telescopic cylinder two is installed on the feeding seat. Its output end is equipped with a feeding plate, and the surface of the feeding plate is equipped with positioning pins that cooperate with the connecting plate.

[0023] Preferably, the adjustment frame is also provided with a storage box corresponding to the feeding plate.

[0024] Preferably, the positioning device includes:

[0025] The second lifting guide rail is symmetrically arranged on both sides of the adjustment frame;

[0026] Push-pull rod three is installed on lifting guide rail two. Its output end is equipped with a positioning seat. A slide is slidable on the positioning seat. The slide is connected to the positioning seat through a sensing spring.

[0027] The inspection roller is rotatably mounted on the carriage.

[0028] Distance sensor three is installed on the positioning seat to detect the distance between it and lifting guide rail two.

[0029] Preferably, the welding apparatus includes:

[0030] The ring frame is installed at the upper end of the adjustment frame;

[0031] A rotating ring, which rotates on a ring frame, has a laser welding head on its ring surface;

[0032] Motor 2 is mounted on the adjustment frame, and its output end is equipped with a rotating wheel that contacts the rotating ring.

[0033] Compared with the prior art, the present invention provides an intelligent laser beam welding device for high-speed tunnel steel arch frames, which has the following beneficial effects:

[0034] In this invention, the tilt angle of the curved steel end face is obtained in real time by a detection device, and the adjustment device is used to automatically rotate and adjust it so that the connecting plate is parallel to the curved steel end face. This effectively overcomes the end face tilting problem caused by springback deformation, improves the centering accuracy, and realizes intelligent detection and adaptive adjustment. The positioning device can accurately identify the center position between the left and right sides of the curved steel end face, and the feeding device automatically adjusts the position of the connecting plate according to the detection results to achieve center coincidence between the connecting plate and the curved steel end face, thereby improving the consistency and reliability of welding alignment.

[0035] In this invention, the clamping assembly uses a distance sensor to dynamically identify the vertical direction of the arc surface of the curved steel, ensuring that the clamping force is always perpendicular to the arc surface. This enhances clamping stability and avoids wear or damage to the surface of the curved steel. By using a laser welding head in conjunction with circular welding trajectory control, continuous, uniform, and high-quality weld formation can be achieved, improving the overall structural strength and durability of the steel arch frame. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the welding equipment structure of the present invention;

[0037] Figure 2 This is a schematic diagram of the clamping component structure of the present invention;

[0038] Figure 3 This is a schematic diagram of the detection device of the present invention;

[0039] Figure 4 This is a schematic diagram of the welding device structure of the present invention;

[0040] Figure 5 This is a schematic diagram of the feeding device structure of the present invention;

[0041] Figure 6 This is a schematic diagram of the positioning device structure of the present invention;

[0042] In the diagram: 1. Hanger; 2. Conveyor table; 3. Detection device; 4. Adjustment device; 5. Feeding device; 6. Positioning device; 7. Welding device; 11. Horizontal guide rail one; 12. Lifting cylinder; 13. Hanging plate; 14. Clamping assembly; 141. Motor one; 142. Hanging frame; 143. Telescopic cylinder one; 144. Slide; 145. Clamping roller; 146. Distance sensor one; 31. Detection frame; 32. Lifting guide rail one; 33. Push-pull rod one; 34. Detection plate; 35. Distance sensor two; 41. Adjustment... 42. Rotator; 43. Turntable; 44. Horizontal guide rail II; 51. Lifting guide rail II; 52. Push-pull rod II; 53. Loading seat; 54. Telescopic cylinder II; 55. Loading plate; 56. Positioning column; 57. Storage box; 58. Connecting plate; 61. Lifting guide rail III; 62. Push-pull rod III; 63. Positioning seat; 64. Slide; 65. Sensing spring; 66. Detection roller; 67. Distance sensor III; 71. Ring frame; 72. Rotary ring; 73. Laser welding head; 74. Rotary wheel; 75. Motor II. Detailed Implementation

[0043] Reference Figures 1-6 This invention provides a technical solution: an intelligent laser beam welding device for high-speed tunnel steel arch frames, comprising:

[0044] The conveyor table 2 is equipped with a hanger 1 above it. A transverse guide rail 11 is installed on the hanger 1. A lifting cylinder 12 is installed on the transverse guide rail 11. A hanging plate 13 is connected to the lower end of the lifting cylinder 12. Multiple clamping components 14 are provided on the hanging plate 13.

[0045] The detection device 3 is installed below the hanger 1 and is used to detect the tilt state of the curved steel end face;

[0046] Adjustment device 4 is set on the adjacent side of detection device 3, and adjustment frame 41 is installed on it. Adjustment frame 41 is respectively equipped with feeding device 5 for feeding connecting plate 58, positioning device 6 for positioning the center of arc steel end face and welding device 7.

[0047] The conveyor platform 2 is arranged in two sets at intervals, which are used for the input of arc-shaped steel and the output of the welded arc-shaped steel respectively. The space between the two conveyor platforms 2 is used to place the detection device 3 and the adjustment device 4. The detection device 3 and the adjustment device 4 are arranged along the conveying direction of the conveyor platform 2, and the detection device 3 and the adjustment device 4 are also arranged on both sides of the conveying direction of the conveyor platform 2, so as to weld the two ends of the arc-shaped steel and improve the welding efficiency. The moving direction of the transverse guide rail 11 is parallel to the conveying direction of the conveyor platform 2.

[0048] In this process, because the curved steel will have a certain amount of slight deformation and springback after being bent, there will be many curved steels with different springback values ​​during mass production. This makes it difficult to accurately align the center of the end face of each curved steel with the center of each connecting plate 58 during the mass welding process. Therefore, in this embodiment, after the clamping assembly 14 clamps the curved steel, the detection device 3 can detect the tilt state of the end face of each curved steel and obtain its tilt angle. Then, the adjustment device 4 rotates and adjusts the adjustment frame 41 according to the tilt angle so that the connecting plate 58 is parallel to the end face of the curved steel. Then, the positioning device 6 detects and positions the center between the left and right sides of the end face of the curved steel. Then, the feeding device 5 feeds the connecting plate 58 to align it with the end face of the curved steel. Finally, the welding device 7 welds the connecting plate 58 and the end face of the curved steel.

[0049] The center position between the upper and lower edges of the curved steel end face is determined by the fact that the distance between the upper and lower end faces generally remains constant after the curved steel is bent into shape. Therefore, the center position is predicted based on the center position between the upper and lower end faces of the curved steel and pre-adjusted. In other words, the center position between the upper and lower end faces of the curved steel is detected in advance. Then, the lifting guide rail 61 in the positioning device 6 is used to adjust the push-pull rod 62 to be on the same horizontal plane as the center position between the upper and lower end faces of the curved steel. Therefore, the positioning device 6 only needs to detect the center position between the left and right edges of the curved steel end face to obtain the center position of the curved steel end face. For a description of the left and right edges and the upper and lower edges of the curved steel end face, refer to... Figure 1 The placement of the medium-curved steel.

[0050] In this embodiment, the clamping assembly 14 includes:

[0051] Motor 141 is mounted on the hanging plate 13, and its output end is connected to the hanging frame 142;

[0052] Telescopic cylinder 143 is symmetrically arranged at both ends of the hanging frame 42, and its output end is connected to slide 144. A clamping roller 145 is installed at the lower end of slide 144.

[0053] Specifically, the clamping process of the arc-shaped steel is as follows: the lifting cylinder 12 is moved by adjusting the transverse guide rail 11 so that the hanging plate 13 is above the arc-shaped steel. The lifting cylinder 12 adjusts the hanging plate 13 to descend so that the lower end face of the hanging frame 142 contacts the upper end face of the arc-shaped steel. Then, the angle of the hanging frame 142 is adjusted by the motor 141, and the clamping roller 145 is adjusted by the telescopic cylinder 143 to clamp the arc-shaped steel tightly against the side arc surface.

[0054] In this embodiment, a distance sensor 146 is provided on the clamping roller 145 to detect the distance between the clamping roller 145 and the side arc surface of the arc-shaped steel.

[0055] Among them, due to the slight differences in deformation and springback of the arc-shaped steel, there will be arc-shaped steels with slight differences in curvature of different surfaces. When the part of the arc-shaped steel being clamped is not perpendicular to the arc surface of the arc-shaped steel, it is easy to reduce the clamping accuracy and stability of the arc-shaped steel and easily increase the wear effect on the arc surface of the arc-shaped steel. Therefore, in the process of adjusting the angle of the lifting frame 142 by the motor 141, specifically, the clamping rollers 145 on both sides of the arc-shaped steel are in the initial position, and the motor 141 reciprocates to drive the lifting frame 142 to rotate back and forth. During this process, the distance sensors 146 on both sides record their distance from the side arc of the arc-shaped steel. The distance between the surfaces changes. Let the dynamic distance of the outer arc surface of the arc steel be WD and the dynamic distance of the inner arc surface of the arc steel be ND. Calculate the total value of WD and ND read at the same time each time. Set the total dynamic value as HD. Also, when WD and ND are read each time, the angle of rotation of the hanging frame 142 is also recorded. Set the dynamic angle as ZJ. Therefore, obtain the minimum value of HD. At this time, obtain the corresponding ZJ. At this time, when the telescopic cylinder 143 adjusts the clamping roller 145 to approach the arc surface of the arc steel, the moving direction of the clamping roller 145 is perpendicular to the arc surface of the arc steel. Therefore, the clamping roller 145 can clamp the arc surface of the arc steel perpendicularly.

[0056] In this embodiment, the detection device 3 includes:

[0057] The testing frame 31 has symmetrical lifting guide rails 32 on both sides, and push-pull rods 33 are installed on the lifting guide rails 32.

[0058] The detection plate 34 is hinged at both ends to the output ends of the two push-pull rods 33 on a horizontal plane.

[0059] Distance sensor 2 35 is mounted on push-pull rod 1 33 and is used to detect the distance between it and detection plate 34.

[0060] Specifically, when the end of the arc-shaped steel held by the clamping assembly 14 corresponds to the detection plate 34, the two push-pull rods 33 are driven synchronously to move the detection plate 34 toward the end face of the arc-shaped steel until the two push-pull rods 33 can no longer move. At this time, the detection plate 34 is flush with the end face of the arc-shaped steel. The difference between the two distance sensors 35 is obtained and set as CZD. The distance between the two distance sensors 35 is preset as JZD. The tilt angle of the detection plate 34 to be obtained is set as δ. By substituting CZD and JZD into the arctangent function δ = arctan(CZD / JZD), the value of δ can be obtained. The tilt angle of the end face of the arc-shaped steel is equal to δ.

[0061] The lifting guide rail 32 is designed to allow for flexible adjustment of the height of the detection plate 34.

[0062] In this embodiment, the adjustment device 4 includes:

[0063] Rotator 42, with a turntable 43 mounted on its output end;

[0064] The second transverse guide rail 44 is set on the turntable 43 and passes through the center of the turntable 43, and the adjustment bracket 41 is installed on the second transverse guide rail 44.

[0065] Specifically, after obtaining the tilt angle of the arc-shaped steel end face through the detection device 3, the turntable 43 is rotated by the rotator 42 to adjust the rotation angle, so that the moving direction of the second transverse guide rail 44 is perpendicular to the arc-shaped steel end face, thereby ensuring that the plate surface of the connecting plate 58 is parallel to the arc-shaped steel end face. The setting of the second transverse guide rail 44 facilitates the overall adjustment frame 41 to move vertically toward the arc-shaped steel end face, so as to cooperate with the positioning device 6 for positioning, the fitting and welding of the connecting plate 58 and the arc-shaped steel end face.

[0066] In this embodiment, the feeding device 5 includes:

[0067] Lifting guide rail 2 51 is symmetrically arranged on both sides of the adjustment frame 41;

[0068] The loading seat 53 is connected to the lifting guide rails 51 on both sides of its two ends by push-pull rods 52 respectively;

[0069] Telescopic cylinder 2 54 is installed on feeding seat 53. Its output end is provided with feeding plate 55. The feeding plate 55 is provided with positioning post 56 that cooperates with connecting plate 58.

[0070] Specifically, by adjusting the positioning post 56 on the feeding plate 55 to align with the connecting plate 58 using the telescopic cylinder 54, one connecting plate 58 is taken out. After the positioning device 6 completes the positioning, based on the center position between the left and right sides of the arc-shaped steel end face obtained by the positioning device 6, the two push-pull rods 52 cooperate to adjust each other so that the center position between the left and right sides of the connecting plate 58 is on the same vertical plane as the center position between the left and right sides of the arc-shaped steel end face. Therefore, by raising the lifting guide rail 51 to the height of the center position between the upper and lower end faces of the arc-shaped steel, the center of the connecting plate 58 and the center of the arc-shaped steel end face can be aligned on the same straight line. Then, by adjusting the telescopic cylinder 54 to move the connecting plate 58 closer to the arc-shaped steel end face until they fit together, the alignment of the connecting plate 58 and the arc-shaped steel end face can be completed.

[0071] In this embodiment, the adjustment frame 41 is also provided with a storage box 57 corresponding to the loading plate 55, so as to store the connecting plate 58 and improve welding efficiency.

[0072] In this embodiment, the positioning device 6 includes:

[0073] Lifting guide rail 2 61 is symmetrically arranged on both sides of the adjustment frame 41;

[0074] Push-pull rod 3 62 is installed on lifting guide rail 2 61. Its output end is provided with positioning seat 63. A slide 64 slides on the positioning seat 63. The slide 64 is connected to the positioning seat 63 through a sensing spring 65.

[0075] The detection roller 66 is rotatably mounted on the slide 64;

[0076] Distance sensor 3 67 is installed on positioning seat 63 to detect the distance between it and lifting guide rail 2 61;

[0077] Specifically, after the adjustment device 4 adjusts according to the data obtained by the detection device 3, that is, the plane where the positioning device 6 is located is parallel to the end face of the arc-shaped steel, the adjustment frame 41 is then adjusted to move closer to the end face of the arc-shaped steel via the transverse guide rail 44 in the adjustment device 4. At this time, the detection roller 66 is set to be in front of the end face of the arc-shaped steel until the partial roller surface of the detection roller 66 on the side of the arc-shaped steel is located a certain distance behind the end face of the arc-shaped steel. That is, during the process of the push-pull rod 62 adjusting and driving the detection roller 66 to move laterally, from the contact of the detection roller 66 with the left and right sides of the end face of the arc-shaped steel to the movement of the detection roller 66 along the end face of the arc-shaped steel, the sensing spring 65 is first compressed by a certain amount, and then maintained at this certain amount of compression. Therefore, at the first moment when the sensing spring 65 is compressed by a certain amount and remains unchanged, that is, at this moment the detection roller 66 is tangent to the left and right sides of the end face of the arc-shaped steel. Therefore, the distance between the two detection rollers 66 is the distance between the left and right sides of the end face of the arc-shaped steel. Let HXD be the distance between the two distance sensors 67 and the left and right lifting guide rails 61, respectively, and let ZD and YD be the distance between them. Let SED be the initial distance between the left and right lifting guide rails 61. Let the initial left and right center point positions between the left and right lifting guide rails 61 be ○. Obtain HXD = SED - ZD - YD. If ZD is less than YD, calculate the left and right eccentricity points ○D = SED / 2 - HXD / 2 - ZD. Then the positioning arc-shaped steel end face is between the left and right sides. If the center point of the arc-shaped steel end face is offset to the left by ○D, and ZD is greater than YD, calculate the left and right eccentricity points ○D = SED / 2 - HXD / 2 - YD. Then the center point between the left and right sides of the positioned arc-shaped steel end face is offset to the right by ○D. If ZD is equal to YD, the center point between the left and right sides of the positioned arc-shaped steel end face is not offset. At this time, according to the offset of the center point between the left and right sides of the positioned arc-shaped steel end face, the two push-pull rods 52 in the feeding device 5 are adjusted to each other to complete the coincidence positioning of the center point of the connecting plate 58 and the arc-shaped steel end face.

[0078] The curved steel has curved surfaces on both sides, so the distance between the left and right sides of the curved steel end face can be accurately measured by the detection roller 66 in the positioning device 6 of this structure.

[0079] In this embodiment, the welding device 7 includes:

[0080] Ring frame 71 is installed on the upper end of adjustment frame 41;

[0081] A rotating ring 72 rotates on a ring frame 71, and a laser welding head 73 is provided on its ring surface;

[0082] Motor 2 75 is mounted on the adjustment frame 41, and its output end is provided with a rotating wheel 74 that contacts the rotating ring 72;

[0083] Specifically, after the connecting plate 58 is positioned and fitted with the end face of the arc-shaped steel, the connecting plate 58 is welded to the end face of the arc-shaped steel by the motor 75 and the laser welding head 73.

[0084] In its specific implementation, it includes the following steps:

[0085] S101: Pre-detect the center position between the upper and lower end faces of the arc steel. Then, adjust the push-pull rod 62 and the center position between the upper and lower end faces of the arc steel to be on the same horizontal plane through the lifting guide rail 61 in the positioning device 6. Adjust the push-pull rod 33 and the center position between the upper and lower end faces of the arc steel to be on the same horizontal plane through the lifting guide rail 32 in the detection device 3.

[0086] S102: The lifting cylinder 12 is moved by adjusting the transverse guide rail 11 so that the hanging plate 13 is above the arc steel. The lifting cylinder 12 adjusts the hanging plate 13 to descend so that the lower end face of the hanging frame 142 contacts the upper end face of the arc steel. Then the angle of the hanging frame 142 is adjusted by the motor 141, and the clamping roller 145 is adjusted by the telescopic cylinder 143 to clamp the side arc surface of the arc steel tightly.

[0087] S103: Adjust the arc-shaped steel to move to the area of ​​the detection device 3, and synchronously drive the two push-pull rods 33 until the two push-pull rods 33 can no longer move. Obtain the difference CZD between the two distance sensors 35. The distance between the two distance sensors 35 is preset to JZD. The tilt angle of the detection plate 34 to be obtained is set as δ. Substitute it into the arctangent function δ=arctan(CZD / JZD) to obtain the value of δ. The tilt angle of the end face of the arc-shaped steel is equal to δ.

[0088] S104: After obtaining the tilt angle of the arc-shaped steel end face through the detection device 3, the turntable 43 is rotated by the rotator 42 to adjust the angle of rotation, so that the adjustment frame 41 can be parallel to the arc-shaped steel end face. The arc-shaped steel is adjusted to move to the area of ​​the positioning device 6. Then, the adjustment frame 41 is adjusted to move closer to the arc-shaped steel end face through the transverse guide rail 44 in the adjustment device 4, so that the local roller surface of the detection roller 66 on the side of the arc-shaped steel is located a certain distance behind the end face of the arc-shaped steel. At this time, the push-pull rod 62 adjusts and drives the detection roller 66 to move laterally. When the sensing spring 65 is compressed to a certain amount and remains unchanged at the first moment, the distance between the two detection rollers 66 is the distance between the left and right sides of the arc-shaped steel end face, denoted as HXD. At this time, the distance between the two rollers is adjusted by the two rollers. Sensor 3 67 records ZD and YD respectively. The initial distance between the left and right lifting guide rails 2 61 is set as SED. The initial left and right center point positions between the left and right lifting guide rails 2 61 are set as ○. HXD = SED - ZD - YD is obtained. If ZD is less than YD, the left and right eccentricity point ○D = SED / 2 - HXD / 2 - ZD is calculated. Then the center point between the left and right sides of the positioned arc-shaped steel end face is shifted to the left by ○D. If ZD is greater than YD, the left and right eccentricity point ○D = SED / 2 - HXD / 2 - YD is calculated. Then the center point between the left and right sides of the positioned arc-shaped steel end face is shifted to the right by ○D. If ZD is equal to YD, the center point between the left and right sides of the positioned arc-shaped steel end face is not shifted. Then the detection device 3 is reset.

[0089] S105: The connecting plate 58 is picked up by the feeding device 5. Then, according to the offset of the center point between the left and right sides of the arc steel end face, the two push-pull rods 52 in the feeding device 5 are adjusted to each other to complete the center alignment between the center of the connecting plate 58 and the center of the left and right sides of the arc steel end face. Then, the center position between the push-pull rods 52 and the upper and lower end faces of the arc steel is adjusted to be on the same horizontal plane by the lifting guide rail 51. Then, the connecting plate 58 is adjusted to fit with the arc steel end face by the telescopic cylinder 54.

[0090] S106: The connecting plate 58 is welded to the end face of the arc-shaped steel using the welding device 7.

[0091] The above description is merely a preferred embodiment of the invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An intelligent laser beam welding device for high-speed tunnel steel arch frames, characterized in that, include The conveyor table has a hanger above it, a horizontal guide rail is installed on the hanger, a lifting cylinder is installed on the horizontal guide rail, a hanging plate is connected to the lower end of the lifting cylinder, and multiple clamping components are installed on the hanging plate. The detection device, located below the hanger, is used to detect the tilting state of the curved steel end face; An adjustment device is set on the adjacent side of the detection device. An adjustment frame is installed on the adjustment device. The adjustment frame is respectively equipped with a feeding device for feeding the connecting plate, a positioning device for positioning the center of the arc-shaped steel end face, and a welding device. The detection device includes: The testing frame has symmetrical lifting guide rails on both sides, and a push-pull rod is installed on the lifting guide rails. The detection plate has its two ends hinged to the output ends of two push-pull rods on a horizontal plane. Distance sensor two is mounted on push-pull rod one and is used to detect the distance between distance sensor two and detection plate; The positioning device includes: The third lifting guide rail is symmetrically arranged on both sides of the adjustment frame; Push-pull rod three is installed on lifting guide rail three. The output end of push-pull rod three is provided with a positioning seat. A slide bracket slides on the positioning seat. The slide bracket is connected to the positioning seat through a sensing spring. The inspection roller is rotatably mounted on the carriage. Distance sensor three is installed on the positioning seat to detect the distance between distance sensor three and lifting guide rail three; During detection and positioning, the end of the arc-shaped steel held by the clamping assembly corresponds to the detection plate. The two push-pull rods are driven synchronously, and the detection plate moves towards the end face of the arc-shaped steel until the two push-pull rods can no longer move. The detection plate is flush with the end face of the arc-shaped steel and is in close contact. The difference between the two distance sensors is obtained and set as CZD. The distance between the two distance sensors is preset as JZD. The tilt angle of the detection plate to be obtained is set as δ. By substituting CZD and JZD into the arctangent function δ=arctan, the value of δ can be obtained. The tilt angle of the end face of the arc-shaped steel is equal to δ. Then, the push-pull rod three adjusts and drives the detection roller to move laterally. The detection roller contacts the left and right edges of the arc-shaped steel end face until it moves along the arc-shaped steel end face. The sensing spring is first compressed by a certain amount, and then maintained at this certain amount of compression. At this time, the detection roller is tangent to the left and right edges of the arc-shaped steel end face. The distance between the two detection rollers is the distance between the left and right edges of the arc-shaped steel end face, denoted as HXD. The distances between the two distance sensors three and the left and right lifting guide rails three are recorded at this time, denoted as ZD and YD respectively. The initial distance between the left and right lifting guide rails three is denoted as SED. The initial left distance between the left and right lifting guide rails three is denoted as SED. The right center point is ○. We obtain HXD = SED - ZD - YD. If ZD is less than YD, we calculate the left and right eccentricity points ○D = SED / 2 - HXD / 2 - ZD. The center point between the left and right sides of the positioned arc-shaped steel end face shifts ○D to the left. If ZD is greater than YD, we calculate the left and right eccentricity points ○D = SED / 2 - HXD / 2 - YD. The center point between the left and right sides of the positioned arc-shaped steel end face shifts ○D to the right. If ZD equals YD, the center point between the left and right sides of the positioned arc-shaped steel end face does not shift. At this point, the connection plate and the center point of the arc-shaped steel end face are aligned and positioned according to the offset of the center point between the left and right sides of the positioned arc-shaped steel end face.

2. The intelligent laser beam welding equipment for high-speed tunnel steel arch frames according to claim 1, characterized in that, The clamping assembly includes: Motor 1 is mounted on the hanging plate, and the output end of motor 1 is connected to the hanging frame; Telescopic cylinder one is symmetrically arranged at both ends of the hanging frame. The output end of the telescopic cylinder one is connected to a slide block, and a clamping roller is installed at the lower end of the slide block.

3. The intelligent laser beam welding equipment for high-speed tunnel steel arch frames according to claim 2, characterized in that, The clamping roller is equipped with a distance sensor to detect the distance between the clamping roller and the side arc surface of the arc-shaped steel.

4. The intelligent laser beam welding equipment for high-speed tunnel steel arch frames according to claim 1, characterized in that, The adjustment device includes: A rotary device with a turntable mounted on its output end; The second horizontal guide rail is set on the turntable and passes through the center of the turntable, and the adjustment frame is installed on the second horizontal guide rail.

5. The intelligent laser beam welding equipment for high-speed tunnel steel arch frames according to claim 1, characterized in that, The feeding device includes: The second lifting guide rail is symmetrically arranged on both sides of the adjustment frame; The feeding seat has its two ends connected to the lifting guide rails on both sides via push-pull rods. Telescopic cylinder two is installed on the feeding seat. The output end of the telescopic cylinder two is provided with a feeding plate, and the surface of the feeding plate is provided with positioning posts that cooperate with the connecting plate.

6. The intelligent laser beam welding equipment for high-speed tunnel steel arch frames according to claim 5, characterized in that, The adjustment frame is also equipped with a storage box corresponding to the feeding plate.

7. The intelligent laser beam welding equipment for high-speed tunnel steel arch frames according to claim 1, characterized in that, The welding apparatus includes: The ring frame is installed at the upper end of the adjustment frame; A rotating ring, which rotates on a ring frame, has a laser welding head on its ring surface; Motor 2 is mounted on the adjustment frame, and the output end of motor 2 is provided with a rotating wheel that contacts the rotating ring.

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