Large-diameter elbow welding device
By using an angle-adjustable fixing plate driven by a transmission screw and a clamping push cylinder and a motor-driven welding head, the automated positioning and welding of large-diameter elbows is achieved. This solves the problems of poor adaptability and low efficiency of traditional devices, and improves welding accuracy and production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG SMART PIPE CO LTD
- Filing Date
- 2026-03-11
- Publication Date
- 2026-04-14
AI Technical Summary
Traditional large-diameter elbow welding equipment is difficult to adapt to different angles and pipe diameters, has poor positioning accuracy, is prone to misalignment during the welding process, has high labor intensity, and low efficiency, and cannot meet the demand for efficient and automated welding of elbows of various specifications.
The bending pipe fixing adjustment plate is driven by an angle adjustment fixture and a transmission screw, combined with a clamping and pushing cylinder and a welding head driven by a motor, to realize the automatic positioning, clamping and circumferential welding of the bending pipe. Through the coordinated work of the motor and cylinder, the entire process of mechanized and automated welding is achieved.
It enables efficient and automated welding of elbows with different angles and pipe diameters, improves positioning accuracy and welding consistency, reduces labor intensity, and enhances production efficiency and welding quality.
Smart Images
Figure CN224115443U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of elbow welding devices, specifically relating to a large-diameter elbow welding device. Background Technology
[0002] Large-diameter elbows are key components in pipeline systems in fields such as petroleum, chemical, municipal pipeline networks, and power transmission. Their welding quality directly affects the pipeline's sealing performance and operational safety.
[0003] Traditional tooling is difficult to adapt to the positioning requirements of elbows with different angles and pipe diameters. It is difficult to keep the weld joint horizontal, which can easily lead to misalignment and uneven welding. Pipe clamping is mostly single-point or asynchronous, resulting in poor centering accuracy. The welding process is prone to shaking, and the welding position adjustment depends on manual movement, which is inefficient and has large errors. Circumferential welds require manual rotation of pipe fittings or adjustment of the welding torch, which is labor-intensive, results in uneven weld formation, and makes it difficult to guarantee consistency. In addition, the existing equipment is cumbersome to adjust and has poor versatility, which cannot meet the needs of efficient and automated welding of elbows of various specifications, thus restricting the improvement of production efficiency and product quality. Utility Model Content
[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a large-diameter elbow welding device to meet the positioning requirements of elbows of different diameters and different bend angles, and to effectively avoid the difficulty in keeping the weld joint horizontal and the problems of misalignment and off-center welding.
[0005] To achieve the above objectives, a large-diameter elbow welding device includes a main frame. An angle adjustment fixture is fixedly installed at the middle position of one end of the main frame. A bend fixing adjustment plate is slidably installed vertically inside the angle adjustment fixture, and the other end of the bend fixing adjustment plate is slidably installed horizontally inside the main frame. The bend fixing adjustment plate is threadedly connected to a first transmission screw. One end of the first transmission screw is rotatably connected to the angle adjustment fixture, and the other end of the first transmission screw is rotatably installed on the main frame. A first motor is fixedly connected to one end of the first transmission screw at the main frame, and the first motor is fixedly installed at the bottom end of the main frame.
[0006] The upper surface of the bend fixing adjustment plate is provided with a sliding groove, which is cross-shaped, and several evenly distributed bend clamping parts are slidably installed on the sliding groove.
[0007] A clamping adjustment plate is provided below the bending pipe fixing adjustment plate. Several arc-shaped sliding grooves are formed on the upper surface of the clamping adjustment plate. One end of the arc-shaped sliding groove is close to the axis of the clamping adjustment plate, and the other end is away from the axis of the clamping adjustment plate. The several arc-shaped sliding grooves are evenly distributed in a circular pattern. The other end of the bending pipe clamping component is slidably installed inside the arc-shaped sliding groove.
[0008] The clamping adjustment disc is rotatably mounted on the fixed plate, and the clamping adjustment disc is located below the bent pipe fixing adjustment plate. The fixed plate is fixedly mounted on the bottom end of the bent pipe fixing adjustment plate.
[0009] Preferably, a gear is fixedly installed at the bottom of the clamping adjustment plate. The gear is located on the fixed plate and away from the clamping adjustment plate. The gear is meshed with a rack. The rack is slidably installed on the lower surface of the fixed plate. A clamping push cylinder is fixedly connected to one end of the rack. The clamping push cylinder is fixedly installed on the fixed plate.
[0010] Preferably, a sliding component is slidably installed on the main frame of the equipment on one side of the bent pipe fixing adjustment plate. The sliding component is threadedly connected to a second transmission screw. The second transmission screw is rotatably installed on the main frame of the equipment. One end of the second transmission screw is fixedly connected to a third motor, which is fixedly installed on one side of the main frame of the equipment.
[0011] Preferably, a bent pipe support is slidably mounted on the middle position of the sliding member, and a height adjustment cylinder is fixedly connected to one end of the bent pipe support. The height adjustment cylinder is fixedly mounted on the bottom end of the sliding member.
[0012] Preferably, a fixing member is fixedly installed on the outer side of the sliding member, a rotating disk is rotatably connected to the fixing member, an electric sliding rail is fixedly installed on the outer side of the rotating disk, a welding head is fixedly installed on the electric sliding rail, a rotating wheel is fitted to one side of the rotating disk, the rotating wheel is fixedly installed on the drive end of the second motor, and the second motor is fixedly installed on the sliding member.
[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0014] This invention allows for the adjustment of the angle of the bend fixing adjustment plate in conjunction with the height adjustment of the bend support component, making it suitable for welding large-diameter elbows at different angles. It eliminates the need to change tooling and has high versatility.
[0015] This invention automates the entire process from pipe positioning, clamping, and position adjustment to ring welding, replacing manual hand welding and adjustment, significantly shortening clamping and welding time, and improving mass production efficiency.
[0016] This invention achieves synchronous centering and clamping by using a cylinder to drive a gear and rack, resulting in high concentricity and no positioning deviation. Combined with a ring-shaped rotary welding structure, it ensures uniform welds and effectively reduces welding deviation and defect rate. Attached Figure Description
[0017] Figure 1 This is a three-dimensional view of the overall structure of the welding device of this utility model;
[0018] Figure 2 This is a cross-sectional view of the overall structure of the welding device of this utility model;
[0019] Figure 3 This is an exploded view of the pipe bending clamp and angle adjustment device of this utility model;
[0020] Figure 4 This is a cross-sectional view of the overall structure of the welding device of this utility model.
[0021] In the diagram: 1. Main frame of the equipment; 2. Sliding component; 3. Welding head; 4. Electric sliding rail; 5. Fixing component; 6. Rotating disk; 7. Angle adjustment fixing component; 8. Bending pipe fixing adjustment plate; 9. First transmission screw; 10. First motor; 11. Bending pipe support component; 12. Height adjustment cylinder; 13. Clamping adjustment disk; 14. Bending pipe clamping component; 15. Rack; 16. Clamping push cylinder; 17. Gear; 18. Fixing plate; 19. Rotating wheel; 20. Second motor; 21. Second transmission screw; 22. Third motor. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0023] Please see Figures 1-4 A large-diameter elbow welding device includes a main frame 1. An angle adjustment fixing component 7 is fixedly installed at the middle position of one end of the main frame 1. A bend pipe fixing adjustment plate 8 is slidably installed inside the angle adjustment fixing component 7. The other end of the bend pipe fixing adjustment plate 8 is slidably installed inside the main frame 1. The bend pipe fixing adjustment plate 8 is threadedly connected to a first transmission screw 9. One end of the first transmission screw 9 is rotatably connected to the angle adjustment fixing component 7. The other end of the first transmission screw 9 is rotatably installed on the main frame 1. A first motor 10 is fixedly connected to one end of the first transmission screw 9 at the main frame 1. The first motor 10 is fixedly installed at the bottom end of the main frame 1.
[0024] The upper surface of the pipe fixing adjustment plate 8 is provided with a sliding groove. The sliding groove is cross-shaped, and several evenly distributed pipe clamping parts 14 are slidably installed on the sliding groove. The pipe is installed inside the pipe clamping parts 14, and the pipe clamping parts 14 move along the sliding groove towards the pipe, thereby clamping the pipe.
[0025] Below the bending pipe fixing adjustment plate 8, there is a clamping adjustment plate 13. Several arc-shaped sliding grooves are opened on the upper surface of the clamping adjustment plate 13. One end of the arc-shaped sliding groove is close to the axis of the clamping adjustment plate 13, and the other end is far away from the axis of the clamping adjustment plate 13. The several arc-shaped sliding grooves are distributed in a circle. The other end of the bending pipe clamping part 14 is slidably installed inside the arc-shaped sliding groove.
[0026] The pipe clamping component 14, which is slidably installed inside the arc-shaped slide groove 2, moves along the arc-shaped slide groove 2 towards the center position of the clamping adjustment plate 13 when the clamping adjustment plate rotates in the forward direction. Simultaneously, the pipe clamping component 14 moves along the slide groove 1 towards the center of the pipe, thereby achieving pipe clamping.
[0027] The clamping adjustment plate 13 is rotatably mounted on the fixed plate 18, and the clamping adjustment plate 13 is located below the bent pipe fixed adjustment plate 8. The fixed plate 18 is fixedly mounted on the bottom end of the bent pipe fixed adjustment plate 8.
[0028] Thus, the first motor 10 is started to drive the first transmission screw 9 to rotate, which in turn drives the bend fixing adjustment plate 8 to move up and down, thereby adjusting the tilt angle of the bend fixing adjustment plate 8 and adjusting the bend welding joint fixed on the bend fixing adjustment plate 8 to a horizontal position. The bend fixing adjustment plate can realize synchronous adjustment of angle and position, which can adapt to the welding requirements of large-diameter bends with different angles. After the adjustment is completed, the first motor 10 stops running, and the bend fixing adjustment plate 8 remains in the positioning state.
[0029] Please see Figure 2-4 A gear 17 is fixedly installed at the bottom of the clamping adjustment plate 13. The gear 17 is located on the fixed plate 18 and away from the clamping adjustment plate 13. The gear 17 is meshed with a rack 15. The rack 15 is slidably installed on the lower surface of the fixed plate 18. A clamping push cylinder 16 is fixedly connected to one end of the rack 15. The clamping push cylinder 16 is fixedly installed on the fixed plate 18.
[0030] Thus, the clamping cylinder 16 starts to drive the rack 15 to slide linearly along the lower surface of the fixed plate 18. The rack 15 drives the gear 17 to rotate, and the gear 17 drives the clamping adjustment plate 13 to rotate synchronously. When the clamping adjustment plate 13 rotates, it drives the bent pipe clamping member 14 to slide towards the center along the slide groove on the bent pipe fixing adjustment plate 8. Multiple bent pipe clamping members 14 retract, thereby clamping and fixing the bent pipe placed on the bent pipe fixing adjustment plate 8.
[0031] Please see Figure 2-4A sliding component 2 is slidably installed on the main frame 1 of the equipment, located on one side of the bent pipe fixing adjustment plate 8. The sliding component 2 is threadedly connected to a second transmission screw 21, which is rotatably installed on the main frame 1. One end of the second transmission screw 21 is fixedly connected to a third motor 22, which is fixedly installed on one side of the main frame 1. A bent pipe support component 11 is slidably installed up and down in the middle of the sliding component 2. One end of the bent pipe support component 11 is fixedly connected to a height adjustment cylinder 12, which is fixedly installed at the bottom of the sliding component 2. A fixing component 5 is fixedly installed on the outside of the sliding component 2. A rotating disk 6 is rotatably connected to the fixing component 5. An electric sliding rail 4 is fixedly installed on the outside of the rotating disk 6. A welding head 3 is fixedly installed on the electric sliding rail 4. A rotating wheel 19 is fitted to one side of the rotating disk 6. The rotating wheel 19 is fixedly installed on the drive end of the second motor 20, which is fixedly installed on the sliding component 2.
[0032] Thus, the third motor 22 starts, driving the second transmission screw 21 to rotate, driving the sliding member 2 to adjust the lateral displacement along the main frame 1 of the equipment, so as to adapt to different pipe lengths, so that the welding head 3 can be accurately aligned with the welding position of different sized pipes. By starting the height adjustment cylinder 12, the pipe support member 11 is driven to slide up and down to adjust the support height of different pipes, so that the welding joint is always kept in a horizontal position, which facilitates the smooth welding process. The second motor 20 is started to drive the rotating wheel 19 to rotate. The rotating wheel 19 drives the rotating disk 6, the electric sliding rail 4 and the welding head 3 to perform a 360° circular motion welding as a whole. The electric sliding rail 4 drives the welding head 3 to meet the welding requirements of different radial pipe bends.
[0033] The specific implementation process of this utility model is as follows: The elbow is placed on the bend fixing adjustment plate 8. The clamping push cylinder 16 is activated, pushing the rack 15 to drive the gear 17 to rotate synchronously with the clamping adjustment plate 13. The clamping adjustment plate 13 drives multiple bend clamping parts 14 to synchronously converge towards the center along the slide groove, automatically centering and clamping the bend. The first motor 10 is activated, driving the first transmission screw 9 to rotate, adjusting the angle and position of the bend fixing adjustment plate 8. The height adjustment cylinder 12 is activated, causing the bend support part 11 to slide up and down, adjusting the support height in conjunction with the bend fixing adjustment. Plate 8 keeps the weld joint of the bent pipe horizontal at all times, making it adaptable to the welding positioning of bent pipes at different angles. The third motor 22 is started to drive the second transmission screw 21 to rotate, driving the sliding part 2 to move laterally along the main frame 1 of the equipment to adapt to bent pipes of different lengths, so that the welding head 3 is accurately aligned with the welding position of the bent pipe. The second motor 20 is started, and the second motor 20 drives the rotating wheel 19 to rotate. The rotating wheel 19 drives the rotating disk 6, the electric sliding rail 4 and the welding head 3 to make a 360° circular motion as a whole to achieve ring welding. At the same time, the electric sliding rail 4 drives the welding head 3 to adjust radially to adapt to the welding requirements of bent pipes of different diameters.
[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A large-bore elbow welding device comprising a device main frame (1), characterized in that: The equipment main frame (1) one end intermediate position fixed installation has angle adjustment fixed part (7), angle adjustment fixed part (7) inside upper and lower sliding installation has elbow pipe fixed adjusting plate (8), and the other end of elbow pipe fixed adjusting plate (8) left and right sliding installation in the equipment main frame (1) inside, elbow pipe fixed adjusting plate (8) is screwed on the first transmission screw rod (9), the first transmission screw rod (9) one end rotationally connected in angle adjustment fixed part (7), the first transmission screw rod (9) the other end rotationally installed in the equipment main frame (1), the first transmission screw rod (9) one end fixedly connected with first motor (10), and the first motor (10) is fixedly installed on the bottom end of the equipment main frame (1); The upper surface of the elbow pipe fixing adjusting plate (8) is provided with a sliding groove one, which is a cross type, and a plurality of evenly distributed elbow pipe clamping parts (14) are slidably installed on the sliding groove one; The elbow pipe fixing adjusting plate (8) is provided below the clamping adjusting disc (13), the upper surface of the clamping adjusting disc (13) is provided with a plurality of arc-shaped sliding grooves two, one end of the arc-shaped sliding groove two is close to the shaft of the clamping adjusting disc (13), the other end is away from the shaft of the clamping adjusting disc (13), and a plurality of arc-shaped sliding grooves two are circularly distributed, the other end of the elbow pipe clamping part (14) is slidably installed in the arc-shaped sliding groove two; The clamping adjusting disc (13) is rotatably installed on the fixed plate (18), and the clamping adjusting disc (13) is located below the elbow pipe fixing adjusting plate (8), and the fixed plate (18) is fixedly installed on the bottom end of the elbow pipe fixing adjusting plate (8).
2. A large-bore elbow welding device according to claim 1, characterized in that: The bottom end of the clamping adjusting disc (13) is fixedly provided with a gear (17), the gear (17) is located on the fixed plate (18) and away from one side of the clamping adjusting disc (13), the gear (17) is engaged with a rack (15), the rack (15) is slidably installed on the lower surface of the fixed plate (18), one end of the rack (15) is fixedly connected with a clamping push air cylinder (16), and the clamping push air cylinder (16) is fixedly installed on the fixed plate (18).
3. A large-bore elbow welding device according to claim 1, characterized in that: The equipment main frame (1) is slidably installed on one side of the elbow pipe fixing adjusting plate (8), and the sliding part (2) is slidably installed on one side of the equipment main frame (1).
4. A large-bore elbow welding device according to claim 3, characterized in that: The middle position of the sliding part (2) is slidably installed with an elbow pipe supporting part (11), one end of the elbow pipe supporting part (11) is fixedly connected with a height adjusting air cylinder (12), and the height adjusting air cylinder (12) is fixedly installed on the bottom end of the sliding part (2).
5. A large-bore elbow welding device according to claim 4, characterized in that: The outer side of the sliding piece (2) is fixedly installed with a fixing piece (5), the fixing piece (5) is rotationally connected with a rotating disc (6), the outer side of the rotating disc (6) is fixedly installed with an electric sliding rail (4), the electric sliding rail (4) is fixedly installed with a welding head (3), one side of the rotating disc (6) is attached with a rotating wheel (19), the rotating wheel (19) is fixedly installed on the driving end of a second motor (20), and the second motor (20) is fixedly installed on the sliding piece (2).