Positioning and clamping device for welding steel pipes

Abstract

The utility model discloses a kind of positioning clamping devices for steel pipe welding, it is related to steel pipe welding technical field, including welding platform, the top of welding platform movably is provided with symmetrical moving seat, the opposite side of two moving seats is rotatably provided with carousel, the side of carousel is provided with positioning cylinder, the inside of positioning cylinder is provided with the clamping assembly for clamping steel pipe, the outer wall of moving seat is provided with the rotating assembly for driving positioning cylinder rotation, the top of welding platform is also provided with symmetrical support frame, the inside of support frame is provided with the auxiliary assembly for assisting rotating assembly rotation, positioning cylinder and the synchronous rotation of clamped steel pipe are driven by rotating assembly, cooperate auxiliary assembly to reduce rotating friction, guarantee rotating stability, without frequently releasing clamping, overturning steel pipe and re-fixing, can directly complete steel pipe all-around welding, reduce operation step, shorten welding time consumption, improve overall welding efficiency.

Description

Technical Field

[0001] This utility model relates to the field of steel pipe welding technology, specifically a positioning and clamping device for steel pipe welding. Background Technology

[0002] Steel pipes are steel materials with hollow cross sections, whose length is much greater than their diameter or circumference. Steel pipe welding clamping devices are clamping devices used to secure the steel pipes to be welded, so as to facilitate welding at the joints of the steel pipes.

[0003] Chinese Patent Publication No. CN220312350U discloses a clamping device for steel pipe welding, including a clamping frame, a horizontal component, and an alignment component. The horizontal component includes support platforms fixedly installed on both sides of the clamping frame, and a support frame fixedly installed at the center of the upper end of the support platforms. The clamping device for steel pipe welding described in this utility model has a clamping table installed inside the support frame at the upper end of the support platform. This table can horizontally clamp the steel pipes placed on the upper end of the support platforms on both sides to maintain their horizontal alignment. This, combined with the opening and closing of the clamping plates on both sides between the support platforms and the clamping table, achieves horizontal and vertical alignment of the ends of the steel pipes after clamping and fixing them with the clamping frame. This ensures the accuracy of the connection between the ends of the steel pipes on both sides, improves the welding accuracy, and this clamping frame can ensure the horizontal and vertical alignment of the connection ends when welding steel pipes of various sizes.

[0004] The aforementioned device aligns the ends of two steel pipes for welding. However, because the pipe ends are circular, the device is only convenient for operating on the upper half of the pipe during welding, while welding the lower half is inconvenient. Typically, the pipes must be released from their clamps and then flipped and re-clamped to complete the welding, undoubtedly reducing welding efficiency.

[0005] Based on this, a positioning and clamping device for steel pipe welding is provided, which can eliminate the drawbacks of existing devices. Utility Model Content

[0006] The purpose of this invention is to provide a positioning and clamping device for steel pipe welding to solve the problems in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A positioning and clamping device for welding steel pipes includes a welding table. Symmetrical movable seats are movably arranged on the top of the welding table. A turntable is rotatably arranged on one side of each of the two movable seats. A positioning cylinder is arranged on one side of each turntable. A clamping assembly for clamping the steel pipe is arranged inside the positioning cylinder. A rotating assembly for driving the positioning cylinder to rotate is arranged on the outer wall of each movable seat. A symmetrical support frame is also arranged on the top of the welding table. An auxiliary assembly for assisting the rotation of the rotating assembly is arranged inside the support frame.

[0009] Based on the above technical solutions, this utility model also provides the following optional technical solutions:

[0010] In one alternative embodiment: the rotating assembly includes a support plate disposed on the outer wall of the clamping seat, a second motor disposed on the top of the support plate, a worm gear disposed on the output shaft of the second motor via a coupling, a rotating rod rotatably disposed on the outer wall of the clamping seat, one end of the rotating rod being connected to the side wall of the turntable, and a worm wheel being disposed on the other end of the rotating rod engaging with the worm gear.

[0011] In one alternative embodiment: the clamping assembly includes a first motor disposed inside the positioning cylinder, the output shaft of the first motor being provided with a screw via a coupling, the external thread of the screw being provided with a threaded disc, a plurality of connecting blocks being rotatably disposed on one side of the threaded disc, a pushing block being rotatably disposed at one end of the connecting block, the outer wall of the positioning cylinder being provided with a movable groove for the pushing block to move, and the outer wall of the pushing block being provided with an arc-shaped clamping plate for clamping the steel pipe.

[0012] In one alternative: a guide rod is provided inside the movable groove, and the push block is movably disposed outside the guide rod.

[0013] In one alternative: anti-slip pads are provided inside the multiple curved clamps.

[0014] In one alternative embodiment: the auxiliary component includes two clamping seats movably disposed inside the support frame, each clamping seat having a plurality of balls on its opposite side, a gear being rotatably disposed inside the support frame, and a rack being disposed on each of the two clamping seats on its opposite side to mesh with the gear, and a hydraulic rod being disposed on the top of the support frame, the movable end of the hydraulic rod being connected to the top of one of the clamping seats.

[0015] In one alternative: a slide bar is provided inside the support frame, and the rack is slidably disposed outside the slide bar.

[0016] In one alternative: the top of the welding table is provided with a linear slide, and the sliding end of the linear slide is connected to the bottom of the movable seat.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] 1. This utility model provides a positioning and clamping device for steel pipe welding. The rotating component drives the positioning cylinder and the clamped steel pipe to rotate synchronously. With the help of auxiliary components, the rotational friction is reduced and the rotational stability is ensured. There is no need to frequently release the clamp, flip the steel pipe and re-fix it. The full circumference welding of the steel pipe can be completed directly, reducing operation steps, shortening welding time and improving overall welding efficiency.

[0019] 2. This utility model provides a positioning and clamping device for steel pipe welding. The distance between the moving seats can be precisely adjusted via a linear slide table to ensure accurate docking of both ends of the steel pipe to be welded. The clamping components enable the arc-shaped clamping plate to accurately clamp the steel pipe, preventing clamping deviation. The anti-slip pad inside the arc-shaped clamping plate enhances the friction with the steel pipe, preventing the steel pipe from sliding during clamping or rotation. With this dual protection, the displacement of the steel pipe during welding is effectively avoided, improving the accuracy of the welding joint and ensuring welding quality. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model.

[0021] Figure 2 This is a schematic diagram of some of the components of this utility model.

[0022] Figure 3 This is a schematic diagram of the clamping component in this utility model.

[0023] Figure 4 This is a schematic diagram of the rotating component in this utility model.

[0024] Figure 5 This is a schematic diagram of the auxiliary components in this utility model.

[0025] Figure reference numerals: 1. Welding table; 2. Movable seat; 3. Linear slide; 4. Positioning cylinder; 5. Support frame; 6. Hydraulic rod; 7. Turntable; 8. First motor; 9. Screw; 10. Threaded disc; 11. Connecting block; 12. Pushing block; 13. Arc-shaped clamping plate; 14. Anti-slip pad; 15. Guide rod; 16. Rotating rod; 17. Support plate; 18. Worm gear; 19. Worm; 20. Second motor; 21. Clamping seat; 22. Rack; 23. Gear; 24. Ball bearing; 25. Slide rod. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0027] In one embodiment, such as Figures 1-5As shown, a positioning and clamping device for welding steel pipes includes a welding table 1. Symmetrical movable seats 2 are movably arranged on the top of the welding table 1. Turntables 7 are rotatably arranged on opposite sides of the two movable seats 2. A positioning cylinder 4 is arranged on one side of the turntable 7. A clamping component for clamping the steel pipe is arranged inside the positioning cylinder 4. A rotating component for driving the positioning cylinder 4 to rotate is arranged on the outer wall of the movable seats 2. A symmetrical support frame 5 is also arranged on the top of the welding table 1. An auxiliary component for assisting the rotation of the rotating component is arranged inside the support frame 5.

[0028] In this embodiment, the welding table 1 provides the installation base for the device, the turntable 7 on the side wall of the movable seat 2 is used to install the positioning cylinder 4, the clamping component inside the positioning cylinder 4 is used to fix and clamp the steel pipe, the rotating component on the outer wall of the movable seat 2 drives the positioning cylinder 4 and the steel pipe to rotate, and the auxiliary component inside the support frame 5 assists the positioning cylinder 4 to rotate smoothly, ensuring that the angle of the steel pipe can be adjusted as needed during the welding process.

[0029] In one embodiment, such as Figure 3 and Figure 4 As shown, the rotating assembly includes a support plate 17 disposed on the outer wall of the clamping seat 21, a second motor 20 disposed on the top of the support plate 17, a worm gear 19 disposed on the output shaft of the second motor 20 through a coupling, a rotating rod 16 rotatably disposed on the outer wall of the clamping seat 21, one end of the rotating rod 16 being connected to the side wall of the turntable 7, and a worm wheel 18 being disposed on the other end of the rotating rod 16 and meshing with the worm gear 19;

[0030] Support plate 17 is fixed to the outer wall of clamping seat 21, providing mounting support for second motor 20. After second motor 20 starts, output shaft drives worm gear 19 to rotate through coupling. Worm gear 19 meshes with worm wheel 18 at one end of rotating rod 16, thereby driving rotating rod 16 to rotate. The other end of rotating rod 16 is connected to turntable 7, and finally, the turntable 7 drives positioning cylinder 4 and clamped steel pipe to rotate synchronously, realizing the adjustment of welding angle.

[0031] In one embodiment, such as Figure 3 As shown, the clamping assembly includes a first motor 8 disposed inside the positioning cylinder 4. The output shaft of the first motor 8 is provided with a screw 9 via a coupling. The screw 9 has a threaded disc 10 on its external thread. Multiple connecting blocks 11 are rotatably disposed on one side of the threaded disc 10. A pushing block 12 is rotatably disposed at one end of the connecting block 11. The outer wall of the positioning cylinder 4 is provided with a movable groove for the pushing block 12 to move. The outer wall of the pushing block 12 is provided with an arc-shaped clamping plate 13 for clamping the steel pipe.

[0032] When the clamping assembly is working, the first motor 8 inside the positioning cylinder 4 starts, and the output shaft drives the screw 9 to rotate through the coupling. The threaded disc 10 outside the screw 9 moves axially along the screw 9 under the action of the thread. When the threaded disc 10 moves, it drives multiple connecting blocks 11 rotatably connected on one side to move synchronously. The connecting blocks 11 push the pushing block 12 rotatably connected to them. The pushing block 12 moves along the movable groove on the outer wall of the positioning cylinder 4, and finally drives the arc-shaped clamping plate 13 to move towards the steel pipe, thereby achieving clamping and fixing of the steel pipe.

[0033] In one embodiment, such as Figure 3 As shown, a guide rod 15 is provided inside the movable groove, and the push block 12 is movably disposed outside the guide rod 15;

[0034] The guide rod 15 in the movable groove guides the movement of the push block 12, restricting the push block 12 to move only along the axial direction of the guide rod 15, preventing the push block 12 from deviating during movement, and ensuring that the arc-shaped clamping plate 13 can accurately clamp the steel pipe.

[0035] In one embodiment, such as Figure 3 As shown, anti-slip pads 14 are provided inside the multiple arc-shaped clamps 13;

[0036] The anti-slip pad 14 inside the arc-shaped clamp 13 increases the friction with the outer wall of the steel pipe, preventing the steel pipe from sliding during clamping or rotation, improving the stability and reliability of clamping, and avoiding displacement of the steel pipe during welding, which would affect the welding accuracy.

[0037] In one embodiment, such as Figure 5 As shown, the auxiliary components include two clamping seats 21 movably disposed inside the support frame 5. Each of the two clamping seats 21 has multiple balls 24 on its opposite side. A gear 23 is rotatably disposed inside the support frame 5. Each of the two clamping seats 21 has a rack 22 that meshes with the gear 23 on its opposite side. A hydraulic rod 6 is disposed on the top of the support frame 5. The movable end of the hydraulic rod 6 is connected to the top of one of the clamping seats 21.

[0038] After the hydraulic rod 6 at the top of the support frame 5 is activated, its movable end pushes a clamping seat 21 connected to it to move. The rack 22 on the clamping seat 21 meshes with the gear 23 inside the support frame 5, driving the gear 23 to rotate, which in turn drives the rack 22 on the other clamping seat 21 to move in the opposite direction, bringing the two clamping seats 21 closer to each other. Multiple balls 24 on opposite sides of the clamping seats 21 contact the outer wall of the positioning cylinder 4. When the positioning cylinder 4 rotates, the balls 24 roll to reduce friction, assisting the positioning cylinder 4 to rotate smoothly.

[0039] In one embodiment, such as Figure 5 As shown, a slide bar 25 is provided inside the support frame 5, and a rack 22 is slidably disposed outside the slide bar 25;

[0040] The slide bar 25 inside the support frame 5 provides sliding support for the clamping seat 21 and the rack 22, restricting the movement direction of the clamping seat 21 and the rack 22, and ensuring that the two clamping seats 21 and the rack 22 can move closer or further away in a straight line under the drive of the hydraulic rod 6, thus ensuring the stability of the clamping.

[0041] In one embodiment, such as Figure 1 As shown, a linear slide 3 is provided on the top of the welding table 1, and the sliding end of the linear slide 3 is connected to the bottom of the movable seat 2.

[0042] When the linear slide 3 on the top of the welding table 1 is working, its sliding end drives the moving seat 2 to move smoothly along the top of the welding table 1. By adjusting the distance between the two moving seats 2, it can adapt to steel pipes of different lengths to be welded, so that the two ends of the steel pipe can be accurately connected, thus preparing for subsequent welding.

[0043] The above embodiment discloses a positioning and clamping device for steel pipe welding. The distance between the movable seats 2 is adjusted by the linear slide 3 to match the length of the steel pipe. Two steel pipes are placed at one end into different positioning cylinders 4. The first motor 8 drives the screw 9 to rotate, which in turn drives the push block 12 and the arc-shaped clamping plate 13 to clamp the steel pipe via the threaded disc 10, connecting block 11, and arc-shaped clamping plate 13. Anti-slip pads 14 enhance clamping stability, and guide rods 15 ensure precise clamping. Simultaneously, hydraulic rods 6 push the clamping seat 21 to press the other end of the steel pipe. Ball bearings 24 assist the positioning cylinder 4 in rotating smoothly. A slide rod 25, rack 22, and gear 23 ensure precise movement of the clamping seat 21. When the welding angle needs adjustment, the second motor 20 drives the rotating rod 16 and turntable 7 to rotate via the worm gear 19 and worm wheel 18, thereby driving the positioning cylinder 4 and the steel pipe to rotate, achieving full-circumference welding of the steel pipe without repeated disassembly and clamping, thus improving welding efficiency and accuracy.

[0044] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A positioning and clamping device for welding steel pipes, characterized in that, The welding table (1) includes a welding table (1) with symmetrical movable seats (2) movably arranged on the top of the welding table (1). A turntable (7) is rotatably arranged on one side of each of the two movable seats (2). A positioning cylinder (4) is arranged on one side of the turntable (7). A clamping component for clamping steel pipes is arranged inside the positioning cylinder (4). A rotating component for driving the positioning cylinder (4) to rotate is arranged on the outer wall of the movable seat (2). A symmetrical support frame (5) is also arranged on the top of the welding table (1). An auxiliary component for assisting the rotation of the rotating component is arranged inside the support frame (5).

2. The positioning and clamping device for steel pipe welding according to claim 1, characterized in that, The rotating assembly includes a support plate (17) disposed on the outer wall of the clamping seat (21). A second motor (20) is disposed on the top of the support plate (17). The output shaft of the second motor (20) is provided with a worm gear (19) through a coupling. A rotating rod (16) is rotatably disposed on the outer wall of the clamping seat (21). One end of the rotating rod (16) is connected to the side wall of the turntable (7). The other end of the rotating rod (16) is provided with a worm wheel (18) that meshes with the worm gear (19).

3. The positioning and clamping device for steel pipe welding according to claim 1, characterized in that, The clamping assembly includes a first motor (8) disposed inside the positioning cylinder (4). The output shaft of the first motor (8) is provided with a screw (9) via a coupling. The external thread of the screw (9) is provided with a threaded disc (10). A plurality of connecting blocks (11) are rotatably disposed on one side of the threaded disc (10). A pushing block (12) is rotatably disposed at one end of the connecting block (11). The outer wall of the positioning cylinder (4) is provided with a movable groove for the pushing block (12) to move. The outer wall of the pushing block (12) is provided with an arc-shaped clamping plate (13) for clamping the steel pipe.

4. The positioning and clamping device for steel pipe welding according to claim 3, characterized in that, The movable groove is provided with a guide rod (15) inside, and the push block (12) is movably disposed outside the guide rod (15).

5. A positioning and clamping device for steel pipe welding according to claim 3, characterized in that, The interior of each of the multiple arc-shaped clamps (13) is provided with an anti-slip pad (14).

6. The positioning and clamping device for steel pipe welding according to claim 1, characterized in that, The auxiliary components include two clamping seats (21) movably disposed inside the support frame (5). Each of the two clamping seats (21) has multiple balls (24) on its opposite side. A gear (23) is rotatably disposed inside the support frame (5). Each of the two clamping seats (21) has a rack (22) meshing with the gear (23) on its opposite side. A hydraulic rod (6) is disposed on the top of the support frame (5). The movable end of the hydraulic rod (6) is connected to the top of one of the clamping seats (21).

7. A positioning and clamping device for steel pipe welding according to claim 6, characterized in that, The support frame (5) is provided with a slide rod (25) inside, and the rack (22) is slidably disposed outside the slide rod (25).

8. A positioning and clamping device for welding steel pipes according to claim 1, characterized in that, The welding table (1) is provided with a linear slide (3) at its top, and the sliding end of the linear slide (3) is connected to the bottom of the movable seat (2).

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