An automatic centering and clamping device for tower drum longitudinal seam welding

Abstract

The utility model relates to tower drum longitudinal seam welding technical field discloses a kind of automatic centering and clamping device for tower drum longitudinal seam welding, including bearing bottom plate, the top of bearing bottom plate is fixedly connected with control cabinet, the top of bearing bottom plate is fixedly connected with lifting support;Lifting support is internally provided with lifting chute, the top of lifting support is fixedly connected with installation clamping frame, the top of installation clamping frame is clamped with cylinder.The utility model is symmetrical with lifting cross bar to weld assembly as center front and back distribution, and forms closed direction circuit with lifting chute, when cylinder pushes down weld assembly, two sides lifting cross bar are synchronous stress, avoid the jamming phenomenon caused by one side load, the driving motor on distance adjusting cross bar is directly connected with screw rod, omit complex transmission link, ensure power transmission efficiency, ball bearing ring is symmetrically arranged in two directions, so that clamping force is uniformly applied to workpiece two sides, prevent deformation or displacement due to uneven stress.

Description

Technical Field

[0001] This utility model relates to the field of tower longitudinal seam welding technology, and in particular to an automatic centering and clamping device for tower longitudinal seam welding. Background Technology

[0002] Longitudinal seam welding of wind turbine towers is a crucial process in tower manufacturing, directly impacting the tower's structural safety and overall performance. Semi-automatic gas-shielded welding or flux-cored wire welding for the root pass: Primarily used for the root pass, initial welding is completed using GMAW or FCAW. Submerged arc welding (SAW) for the fill and cover passes: SAW is used for the fill and cover passes to ensure weld smoothness and mechanical properties. Hydrogen removal treatment: Post-weld, the tower must be held at 200–350℃ for at least 2 hours to prevent hydrogen-induced cracking. Stress control: By optimizing the welding sequence, adjusting bevel dimensions, and heat input parameters, the risk of angular deformation and stress concentration is reduced. The longitudinal seam of the tower must withstand dynamic loads (such as wind turbine vibration), therefore the weld must possess high toughness and impact resistance; some processes require maintaining acceptable impact performance even at low temperatures (-40℃ to -60℃).

[0003] An existing automatic centering and clamping device for longitudinal seam welding of towers is inconvenient and unstable for workers to move the tower when the clamping equipment is performing lateral welding on the tower. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides an automatic centering and clamping device for longitudinal seam welding of towers.

[0005] This utility model is achieved by the following technical solution: an automatic centering and clamping device for longitudinal seam welding of tower tubes, including a bearing base plate, a control cabinet fixedly connected to the top of the bearing base plate, and a lifting bracket fixedly connected to the top of the bearing base plate.

[0006] The lifting bracket has a lifting slide groove inside. A mounting frame is fixedly connected to the top of the lifting bracket. A cylinder is clamped to the top of the mounting frame. A welding assembly is fixedly connected to the output end of the cylinder. Lifting crossbars are fixedly connected to both ends of the welding assembly. An adjusting crossbar is fixedly connected to the top of the bearing base plate. A mounting base is fixedly connected to the front of the adjusting crossbar. A drive motor is clamped to the top of the mounting base. A lead screw is fixedly connected to the output end of the drive motor. A ball bearing ring I and a ball bearing ring II are threaded onto the surface of the lead screw.

[0007] Through the above technical solution, the two symmetrically distributed lifting slides inside the lifting bracket provide a high-precision guide rail for the lifting crossbar. The cylinder is installed on the top of the mounting frame and contacts the top surface of the lifting bracket, forming a stable power output foundation.

[0008] As a further improvement to the above solution, the number of lifting slides is set to two, and the two lifting slides are symmetrically distributed front and back with the lifting bracket as the center, and the bottom of the cylinder is in contact with the top surface of the lifting bracket.

[0009] As a further improvement to the above solution, the lifting bracket is located at the rear end of the control cabinet, the lifting crossbar is slidably connected inside the lifting bracket, and the lifting crossbar is slidably connected inside the lifting slide groove.

[0010] As a further improvement to the above solution, the number of lifting crossbars is set to two, and the two lifting crossbars are symmetrically distributed front and back around the welding assembly, which is located on top of the supporting base plate.

[0011] With the above technical solution, when the cylinder drives the welding assembly to move vertically along the lifting slide, the two lifting crossbars slide synchronously to ensure the positional accuracy of the welding head in the vertical direction.

[0012] As a further improvement to the above solution, the lead screw is threaded inside the adjustable crossbar, the first ball bearing ring is located at the top of the bearing base plate, and the second ball bearing ring is located at the top of the bearing base plate.

[0013] Through the above technical solution, the lead screw inside the adjustable crossbar is driven to rotate by the drive motor, which drives the first ball bearing ring and the second ball bearing ring to move synchronously.

[0014] As a further improvement to the above solution, the rear end of the drive motor contacts the front surface of the adjustable crossbar, and the lead screw is located at the top of the bearing base plate.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] This invention features lifting crossbars symmetrically distributed around the welding assembly, forming a closed guide loop with the lifting slide. When the cylinder pushes the welding assembly down, the lifting crossbars on both sides are simultaneously stressed, avoiding jamming caused by unilateral load. The drive motor on the adjustable crossbar is directly connected to the lead screw, eliminating complex transmission links and ensuring power transmission efficiency. The ball bearing rings are arranged symmetrically in both directions, so that the clamping force is evenly applied to both sides of the workpiece, preventing deformation or displacement caused by uneven force.

[0017] This utility model features a snap-fit ​​design between the mounting frame and the cylinder for easy and quick replacement of the actuator. The inner wall of the lifting slide is hardened to extend its service life. The dust cover on the surface of the adjustable crossbar protects the lead screw from corrosion by metal debris. The positioning method, in which the rear end of the drive motor contacts the front of the adjustable crossbar, ensures that the transmission accuracy can be maintained even after long-term operation. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the rear view structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the structure of this utility model from below;

[0021] Figure 4 This is a schematic diagram of the right-side structure of this utility model.

[0022] Explanation of key symbols:

[0023] 1. Support base plate; 2. Control cabinet; 3. Lifting bracket; 4. Lifting slide; 5. Mounting frame; 6. Cylinder; 7. Welding assembly; 8. Lifting crossbar; 9. Adjustable crossbar; 10. Mounting base shell; 11. Drive motor; 12. Lead screw; 13. Ball bearing ring one; 14. Ball bearing ring two. Detailed Implementation

[0024] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0025] Example:

[0026] Please combine Figure 1-4 An automatic centering and clamping device for longitudinal seam welding of tower tubes according to this embodiment includes a bearing base plate 1, a control cabinet 2 fixedly connected to the top of the bearing base plate 1, and a lifting bracket 3 fixedly connected to the top of the bearing base plate 1.

[0027] The lifting support 3 has a lifting slide 4 inside. A mounting frame 5 is fixedly connected to the top of the lifting support 3. A cylinder 6 is clamped to the top of the mounting frame 5. A welding assembly 7 is fixedly connected to the output end of the cylinder 6. Lifting crossbars 8 are fixedly connected to both ends of the welding assembly 7. An adjusting crossbar 9 is fixedly connected to the top of the bearing base plate 1. A mounting base shell 10 is fixedly connected to the front of the adjusting crossbar 9. A drive motor 11 is clamped to the top of the mounting base shell 10. A lead screw 12 is fixedly connected to the output end of the drive motor 11. A ball bearing ring is threaded onto the surface of the lead screw 12. 13. The lead screw 12 is threaded with a ball bearing ring 14. A lifting crossbar 8 is symmetrically distributed around the welding assembly 7, forming a closed guide loop with the lifting slide 4. When the cylinder 6 pushes the welding assembly 7 down, the two lifting crossbars 8 are simultaneously stressed, avoiding jamming caused by unilateral load. The drive motor 11 on the adjusting crossbar 9 is directly connected to the lead screw 12, eliminating complex transmission links and ensuring efficient power transmission. The ball bearing rings are arranged symmetrically in both directions, ensuring that the clamping force is evenly applied to both sides of the workpiece, preventing deformation or displacement due to uneven force.

[0028] The lifting bracket 3 has two symmetrically distributed lifting slides 4 inside, which provide high-precision guide rails for the lifting crossbar 8. The cylinder 6 is installed on the top of the mounting frame 5 and contacts the top surface of the lifting bracket 3, forming a stable power output base.

[0029] The number of lifting slides 4 is set to two, and the two lifting slides 4 are symmetrically distributed front and back with the lifting bracket 3 as the center. The bottom of the cylinder 6 is in contact with the top surface of the lifting bracket 3.

[0030] The lifting bracket 3 is located at the rear end of the control cabinet 2. The lifting crossbar 8 is slidably connected inside the lifting bracket 3 and inside the lifting slide 4.

[0031] The number of lifting crossbars 8 is set to two, and the two lifting crossbars 8 are symmetrically distributed front and back with the welding assembly 7 as the center. The welding assembly 7 is located on the top of the bearing base plate 1.

[0032] When the cylinder 6 drives the welding assembly 7 to move vertically along the lifting slide 4, the two lifting crossbars 8 slide synchronously to ensure the positional accuracy of the welding head in the vertical direction.

[0033] The lead screw 12 is threaded inside the adjustable crossbar 9. The first ball bearing ring 13 is located on the top of the bearing base plate 1, and the second ball bearing ring 14 is located on the top of the bearing base plate 1. The snap-fit ​​design of the mounting frame 5 and the cylinder 6 facilitates quick replacement of the actuator. The inner wall of the lifting slide 4 is hardened to extend its service life. The dust cover design on the surface of the adjustable crossbar 9 protects the lead screw 12 from corrosion by metal debris. The positioning method of the rear end of the drive motor 11 contacting the front of the adjustable crossbar 9 ensures that the transmission accuracy can be maintained during long-term operation.

[0034] The lead screw 12 inside the adjustable crossbar 9 is driven to rotate by the drive motor 11, which drives the ball bearing ring 13 and the ball bearing ring 14 to move synchronously.

[0035] The rear end of the drive motor 11 contacts the front surface of the adjustable crossbar 9, and the lead screw 12 is located on the top of the bearing base plate 1.

[0036] The implementation principle of an automatic centering and clamping device for longitudinal seam welding of tower tubes in this embodiment is as follows: Lifting crossbars 8 are symmetrically distributed around the welding assembly 7, forming a closed guide loop with the lifting slide 4. When the cylinder 6 pushes the welding assembly 7 down, the lifting crossbars 8 on both sides are simultaneously stressed, avoiding jamming caused by unilateral load. The drive motor 11 on the adjusting crossbar 9 is directly connected to the lead screw 12, eliminating complex transmission links and ensuring power transmission efficiency. The ball bearing rings are arranged symmetrically in both directions, ensuring that the clamping force is evenly applied to both sides of the workpiece, preventing deformation or displacement due to uneven force. The snap-fit ​​design of the mounting frame 5 and the cylinder 6 facilitates quick replacement of the actuator. The inner wall of the lifting slide 4 is hardened to extend its service life. The dust cover design on the surface of the adjusting crossbar 9 protects the lead screw 12 from metal debris corrosion. The positioning method where the rear end of the drive motor 11 contacts the front of the adjusting crossbar 9 ensures that transmission accuracy is maintained even during long-term operation.

[0037] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. An automatic centering and clamping device for longitudinal seam welding of towers, characterized in that, Includes a supporting base plate (1), a control cabinet (2) is fixedly connected to the top of the supporting base plate (1), and a lifting bracket (3) is fixedly connected to the top of the supporting base plate (1); The lifting bracket (3) has a lifting slide groove (4) inside. The top of the lifting bracket (3) is fixedly connected to a mounting frame (5). The top of the mounting frame (5) is clamped with a cylinder (6). The output end of the cylinder (6) is fixedly connected to a welding assembly (7). The left and right ends of the welding assembly (7) are fixedly connected to lifting crossbars (8). The top of the bearing base plate (1) is fixedly connected to an adjusting crossbar (9). The front of the adjusting crossbar (9) is fixedly connected to a mounting base shell (10). The top of the mounting base shell (10) is clamped with a drive motor (11). The output end of the drive motor (11) is fixedly connected to a lead screw (12). The surface of the lead screw (12) is threaded with a ball bearing ring one (13) and the surface of the lead screw (12) is threaded with a ball bearing ring two (14).

2. The automatic centering and clamping device for longitudinal seam welding of towers as described in claim 1, characterized in that: The number of the lifting slides (4) is set to two, and the two lifting slides (4) are symmetrically distributed front and back with the lifting bracket (3) as the center. The bottom of the cylinder (6) is in contact with the top surface of the lifting bracket (3).

3. The automatic centering and clamping device for longitudinal seam welding of towers as described in claim 1, characterized in that: The lifting bracket (3) is located at the rear end of the control cabinet (2), the lifting crossbar (8) is slidably connected inside the lifting bracket (3), and the lifting crossbar (8) is slidably connected inside the lifting slide (4).

4. The automatic centering and clamping device for longitudinal seam welding of towers as described in claim 1, characterized in that: The number of the lifting crossbars (8) is set to two, and the two lifting crossbars (8) are symmetrically distributed front and back with the welding assembly (7) as the center. The welding assembly (7) is located on the top of the bearing base plate (1).

5. The automatic centering and clamping device for longitudinal seam welding of towers as described in claim 1, characterized in that: The lead screw (12) is threaded inside the adjustable crossbar (9), the first ball bearing ring (13) is located at the top of the bearing base plate (1), and the second ball bearing ring (14) is located at the top of the bearing base plate (1).

6. The automatic centering and clamping device for longitudinal seam welding of towers as described in claim 1, characterized in that: The rear end of the drive motor (11) is in contact with the front surface of the adjustable crossbar (9), and the lead screw (12) is located on the top of the bearing base plate (1).

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