A tensioning device for welding steel pipes

Abstract

The utility model relates to steel pipe processing technical field, specifically disclose a kind of tensioner for steel pipe welding, including fixed plate, the top of fixed plate is equipped with adjusting plate, the top of adjusting plate is equipped with connecting plate, the upper surface of adjusting plate is equipped with two sets of positioning hole, by first electric push rod telescopic end push adjusting plate moves up and down, make arc clamping plate and sensor plate preliminary positioning steel pipe position, and second electric push rod telescopic drives second tensioning clamping block horizontal movement and first tensioning clamping block cooperate and adjust steel pipe, and arc clamping plate does not contact steel pipe in the adjusting process, avoid the phenomenon that butt joint is not smooth when steel pipe is butted, then first electric push rod is started again to make arc clamping plate clamp steel pipe, and sensor plate contacts pressure sensor and monitors pressure in real time, ensure that tensioning force is within the scope of steel pipe bearing, effectively solved the problem that traditional tensioning fixture repeatedly adjusts flexibility, easily leave the mark of clamping on steel pipe surface and affect appearance quality even lead to corrosion.

Description

Technical Field

[0001] This utility model relates to the field of steel pipe processing, and in particular to a tensioning device for steel pipe welding. Background Technology

[0002] Steel pipes are hollow steel products whose length is much greater than their diameter or circumference. They are classified according to their cross-sectional shape into round, square, rectangular, and irregularly shaped steel pipes. According to their material, they are classified into carbon structural steel pipes, low alloy structural steel pipes, alloy steel pipes, and composite steel pipes. According to their uses, they are classified into steel pipes for transportation pipelines, engineering structures, thermal equipment, petrochemical industry, machinery manufacturing, geological drilling, and high-pressure equipment. According to their production process, they are classified into seamless steel pipes and welded steel pipes. Seamless steel pipes are further divided into hot-rolled and cold-rolled (drawn) types, while welded steel pipes are further divided into straight seam welded steel pipes and spiral seam welded steel pipes.

[0003] Steel pipe welding typically requires fixing the steel pipe to be welded in a specific position to prevent displacement or misalignment due to thermal deformation or external force during the welding process. However, traditional tensioning clamps usually require repeated adjustments during the adjustment process, resulting in poor flexibility and the tendency to leave clamp marks on the surface of the steel pipe after clamping, affecting the appearance quality. To address these issues, we propose a tensioning device for steel pipe welding. Utility Model Content

[0004] The purpose of this utility model is to provide a tensioning device for steel pipe welding, which solves the problem that traditional tensioning clamps usually require repeated adjustments during the adjustment process, resulting in poor flexibility, and are prone to leaving clamp marks on the surface of the steel pipe after clamping, affecting the appearance quality.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A tensioning device for steel pipe welding includes a fixed plate, an adjusting plate above the fixed plate, and a connecting plate above the adjusting plate. Two sets of positioning holes are formed on the upper surface of the adjusting plate. Two sets of support rods are fixedly connected to the upper surface of the fixed plate, with the top end of each support rod passing through a positioning hole and fixedly connected to the bottom surface of the connecting plate. A first electric push rod is fixedly mounted on the upper surface of the connecting plate, with its telescopic end fixedly connected to the upper surface of the adjusting plate. Two sets of sensor plates are fixedly connected to the bottom surface of the adjusting plate, and two arc-shaped clamping plates are fixedly connected to the bottom surface of the adjusting plate. A first tensioning block is fixedly connected to the upper surface of the fixed plate. The first tensioning block is provided. Two sets of pressure sensors are fixedly installed on the upper surface of the fixed plate, and the pressure sensors are located directly below the sensing plate. Two connecting blocks are fixedly connected to the bottom surface of the fixed plate. Two second electric push rods are fixedly installed on the left side of one of the connecting blocks. A strip groove is opened on the bottom surface of the fixed plate. A linkage block is engaged inside the strip groove. The upper surface of the linkage block is fixedly connected to the bottom surface of the second tensioning block. The telescopic ends of the two second electric push rods are fixedly connected to the right side of the linkage block. A guide hole is opened on the left side of the first tensioning block. Two guide rods are fixedly connected to the right side of the second tensioning block, and the guide rods are slidably connected to the guide hole.

[0007] As a preferred embodiment of the tensioning device for steel pipe welding according to this utility model, a reinforcing ring is fixedly connected to the upper surface of the connecting plate, and the inner ring of the reinforcing ring is fixedly connected to the outer surface of the first electric push rod.

[0008] In a preferred embodiment of the steel pipe welding tensioning device of this utility model, a limiting strip is fixedly connected to both the front and back of the first tensioning block, and one side of each limiting strip that is close to the other contacts the front and back of the second tensioning block, respectively.

[0009] As a preferred embodiment of the tensioning device for steel pipe welding according to this utility model, a reinforcing frame is fixedly connected to the bottom surface of the adjusting plate, and the inner sidewall of the reinforcing frame is fixedly connected to the outer surface of two arc-shaped clamping plates.

[0010] As a preferred embodiment of the tensioning device for steel pipe welding according to this utility model, the bottom surface of the fixing plate is fixedly connected to two support seats, and the upper surface of each support seat is provided with two sets of equally spaced mounting holes, and the inner ring of each mounting hole is provided with threads.

[0011] As a preferred embodiment of the tensioning device for steel pipe welding according to this utility model, the bottom surface of the fixing plate is fixedly connected to two positioning recesses, the inner sidewall of the positioning recesses is engaged with the outer surface of two second electric push rods, the right side of the linkage block is provided with two sliding holes, the inner ring of each sliding hole is slidably connected to a sliding rod, and the left and right sides of the two sliding rods are respectively fixedly connected to the side of the connecting block that is close to each other.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This steel pipe welding tensioning device uses a first electric push rod to extend and retract the adjusting plate, moving it up and down to initially position the steel pipe using an arc-shaped clamping plate and a sensor plate. A second electric push rod then extends and retracts, causing a second tensioning block to move horizontally in conjunction with the first tensioning block to adjust the steel pipe. During adjustment, the arc-shaped clamping plate does not contact the steel pipe, preventing misalignment during pipe joining. The first electric push rod then restarts, clamping the steel pipe with the arc-shaped clamping plate. The sensor plate then contacts the pressure sensor and monitors the pressure in real time, ensuring the tensioning force remains within the steel pipe's tolerance range. This effectively solves the problems of traditional tensioning clamps, such as poor flexibility due to repeated adjustments, leaving marks on the steel pipe surface that affect appearance quality, and even causing corrosion. Attached Figure Description

[0014] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0015] Figure 1 This is a three-dimensional structural diagram of the fixing plate of a tensioning device for steel pipe welding according to the present invention;

[0016] Figure 2 This is a bottom view of the adjusting plate in a tensioning device for steel pipe welding according to the present invention.

[0017] Figure 3 This is a bottom view of the fixed plate in a tensioning device for steel pipe welding according to the present invention.

[0018] Figure 4 This is a side view of the first tensioning block in a tensioning device for welding steel pipes according to the present invention.

[0019] In the diagram: 1. Fixed plate; 2. Support rod; 3. Connecting plate; 4. First electric push rod; 5. Reinforcing ring; 6. Adjusting plate; 7. Positioning hole; 8. Sensor plate; 9. Arc-shaped clamping plate; 10. Second tensioning block; 11. First tensioning block; 12. Limiting strip; 13. Pressure sensor; 14. Reinforcing frame; 15. Support base; 16. Mounting hole; 17. Connecting block; 18. Second electric push rod; 19. Strip groove; 20. Linkage block; 21. Positioning recess; 22. Sliding hole; 23. Sliding rod; 24. Guide hole; 25. Guide rod. Detailed Implementation

[0020] 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 scope of protection of the present utility model. Unless otherwise specified, the methods used in the present utility model are conventional methods; unless otherwise specified, the raw materials and apparatus used are conventional commercially available products.

[0021] The first electric push rod, the second electric push rod, and the pressure sensor in this utility model are all common hydraulic devices and sensors in the prior art. This application will not elaborate on their models or internal structures.

[0022] Please see Figure 1-4In this utility model, a tensioning device for steel pipe welding includes a fixed plate 1, an adjusting plate 6 above the fixed plate 1, a connecting plate 3 above the adjusting plate 6, two sets of positioning holes 7 on the upper surface of the adjusting plate 6, two sets of support rods 2 fixedly connected to the upper surface of the fixed plate 1, the top end of each support rod 2 passing through the positioning hole 7 and fixedly connected to the bottom surface of the connecting plate 3, a first electric push rod 4 fixedly installed on the upper surface of the connecting plate 3, the telescopic end of the first electric push rod 4 fixedly connected to the upper surface of the adjusting plate 6, two sets of sensor plates 8 fixedly connected to the bottom surface of the adjusting plate 6, two arc-shaped clamping plates 9 fixedly connected to the bottom surface of the adjusting plate 6, a first tensioning clamping block 11 fixedly connected to the upper surface of the fixed plate 1, and a second tensioning clamping block placed on the upper surface of the fixed plate 1. Block 10, two sets of pressure sensors 13 are fixedly installed on the upper surface of the fixing plate 1, and the pressure sensors 13 are located directly below the sensing plate 8. Two connecting blocks 17 are fixedly connected to the bottom surface of the fixing plate 1. Two second electric push rods 18 are fixedly installed on the left side of one of the connecting blocks 17. A strip groove 19 is opened on the bottom surface of the fixing plate 1. A linkage block 20 is snapped into the inside of the strip groove 19. The upper surface of the linkage block 20 is fixedly connected to the bottom surface of the second tensioning block 10. The telescopic ends of the two second electric push rods 18 are fixedly connected to the right side of the linkage block 20. A guide hole 24 is opened on the left side of the first tensioning block 11. Two guide rods 25 are fixedly connected to the right side of the second tensioning block 10, and the guide rods 25 are slidably connected to the guide hole 24.

[0023] As a technical optimization of this utility model, a reinforcing ring 5 is fixedly connected to the upper surface of the connecting plate 3. The inner ring of the reinforcing ring 5 is fixedly connected to the outer surface of the first electric push rod 4. Limiting strips 12 are fixedly connected to the front and back of the first tensioning block 11. The two limiting strips 12 are close to each other on one side, respectively contacting the front and back of the second tensioning block 10.

[0024] In this embodiment: the reinforcing ring 5 can reinforce the first electric push rod 4, and the limiting strip 12 can limit the movement of the second tensioning block 10.

[0025] As a technical optimization of this utility model, the bottom surface of the adjusting plate 6 is fixedly connected to a reinforcing frame 14, the inner side wall of the reinforcing frame 14 is fixedly connected to the outer surface of two arc-shaped clamping plates 9, and the bottom surface of the fixing plate 1 is fixedly connected to two support seats 15. Each support seat 15 has two sets of equally spaced mounting holes 16 on its upper surface, and each mounting hole 16 has a threaded inner ring.

[0026] In this embodiment: the reinforced frame 14 can reinforce the arc-shaped card plate 9, and the support base 15 can facilitate the support of the fixed plate 1.

[0027] As a technical optimization of this utility model, the bottom surface of the fixing plate 1 is fixedly connected with two positioning recesses 21. The inner sidewall of the positioning recesses 21 is engaged with the outer surface of the two second electric push rods 18. The right side of the linkage block 20 is provided with two sliding holes 22. The inner ring of each sliding hole 22 is slidably connected with a sliding rod 23. The left and right sides of the two sliding rods 23 are respectively fixedly connected to the side of the connecting block 17 that is close to each other.

[0028] In this embodiment, the sliding block 20 can slide more smoothly by the cooperation of the sliding rod 23 and the sliding hole 22.

[0029] The working principle of this utility model is as follows: In use, the first electric push rod 4 and the two second electric push rods 18 are first connected to the power supply. The two second electric push rods 18 are controlled by a synchronous controller. The extension end of the first electric push rod 4 pushes the adjusting plate 6 up and down. As the adjusting plate 6 moves, it can move the arc-shaped clamping plate 9 and the sensing plate 8, and initially position the steel pipe. At the same time, the extension and retraction of the second electric push rods 18 drives the second tensioning clamping block 10 to move horizontally through the linkage block 20. It cooperates with the first tensioning clamping block 11 and drives the steel pipe to adjust. At this time, the arc-shaped clamping plate 9 is not in contact with the steel pipe. After the position is adjusted, the first electric push rod 4 is restarted, so that the arc-shaped clamping plate 9 clamps the steel pipe. At the same time, the sensing plate 8 will contact the pressure sensor 13 and monitor its tension and pressure in real time, so that the pressure and tension are controlled within the range that the steel pipe can bear. This effectively prevents repeated adjustments, which would result in poor flexibility and leave clamping marks on the surface of the steel pipe after clamping, affecting the appearance quality.

[0030] However, the above description is merely a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model. For those skilled in the art, it is obvious that this utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model.

Claims

1. A tensioning device for welding steel pipes, characterized in that: The system includes a fixed plate (1), an adjusting plate (6) above the fixed plate (1), a connecting plate (3) above the adjusting plate (6), two sets of positioning holes (7) on the upper surface of the adjusting plate (6), two sets of support rods (2) fixedly connected to the upper surface of the fixed plate (1), the top of each support rod (2) passing through the positioning hole (7) and fixedly connected to the bottom surface of the connecting plate (3), a first electric push rod (4) fixedly installed on the upper surface of the connecting plate (3), the telescopic end of the first electric push rod (4) fixedly connected to the upper surface of the adjusting plate (6), two sets of sensor plates (8) fixedly connected to the bottom surface of the adjusting plate (6), two arc-shaped clamping plates (9) fixedly connected to the bottom surface of the adjusting plate (6), a first tensioning block (11) fixedly connected to the upper surface of the fixed plate (1), and a second tensioning block (10) placed on the upper surface of the fixed plate (1). Two sets of pressure sensors (13) are fixedly installed on the upper surface of the fixed plate (1), and the pressure sensors (13) are located directly below the sensing plate (8). Two connecting blocks (17) are fixedly connected to the bottom surface of the fixed plate (1). Two second electric push rods (18) are fixedly installed on the left side of one of the connecting blocks (17). A strip groove (19) is opened on the bottom surface of the fixed plate (1). A linkage block (20) is snapped into the inside of the strip groove (19). The upper surface of the linkage block (20) is fixedly connected to the bottom surface of the second tensioning block (10). The telescopic ends of the two second electric push rods (18) are fixedly connected to the right side of the linkage block (20). A guide hole (24) is opened on the left side of the first tensioning block (11). Two guide rods (25) are fixedly connected to the right side of the second tensioning block (10), and the guide rods (25) are slidably connected to the guide hole (24).

2. The tensioning device for steel pipe welding according to claim 1, characterized in that: A reinforcing ring (5) is fixedly connected to the upper surface of the connecting plate (3), and the inner ring of the reinforcing ring (5) is fixedly connected to the outer surface of the first electric push rod (4).

3. The tensioning device for steel pipe welding according to claim 1, characterized in that: Limiting strips (12) are fixedly connected to the front and back of the first tensioning block (11). The two limiting strips (12) are respectively in contact with the front and back of the second tensioning block (10).

4. The tensioning device for steel pipe welding according to claim 1, characterized in that: The bottom surface of the adjustment plate (6) is fixedly connected to a reinforcing frame (14), and the inner sidewall of the reinforcing frame (14) is fixedly connected to the outer surface of two arc-shaped plates (9).

5. The tensioning device for steel pipe welding according to claim 1, characterized in that: The bottom surface of the fixing plate (1) is fixedly connected to two support seats (15). Each support seat (15) has two sets of equally spaced mounting holes (16) on its upper surface. Each mounting hole (16) has a thread on its inner ring.

6. The tensioning device for steel pipe welding according to claim 1, characterized in that: The bottom surface of the fixed plate (1) is fixedly connected to two positioning recesses (21). The inner sidewall of the positioning recesses (21) is engaged with the outer surface of the two second electric push rods (18). The right side of the linkage block (20) has two sliding holes (22). The inner ring of each sliding hole (22) is slidably connected to a sliding rod (23). The left and right sides of the two sliding rods (23) are respectively fixedly connected to the side of the connecting block (17) that is close to each other.

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