Positioning device for pipeline welding

Abstract

The utility model provides a positioning device for pipeline welding. The positioning device for pipeline welding comprises a fixed bottom plate and a mounting frame fixedly mounted at the top of the fixed bottom plate, a limiting rod is fixedly mounted on the mounting frame, two sliding plates are slidably mounted on the limiting rod, and transverse moving plates are fixedly mounted at the tops of the two sliding plates; and rotating cylinders are rotationally installed on the two transverse moving plates correspondingly, the limiting rod is sleeved with two springs, the ends, away from each other, of the two springs are fixedly connected with the inner walls of the two sides of the mounting frame correspondingly, and the ends, close to each other, of the two springs are fixedly connected with the outer walls of the sides, away from each other, of the two sliding plates correspondingly. The positioning device for pipeline welding has the advantages of being convenient to operate, reducing labor intensity of workers and improving welding efficiency and quality.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline welding, in particular to a positioning device for pipeline welding. Background Art

[0002] During the laying of the pipeline network, in order to facilitate the transportation of the pipeline, the pipeline generally has a specific length. During the installation process, adjacent pipelines need to be connected together. The current common way to connect pipelines is through flanges, etc., but in special circumstances, such as high temperature, high pressure, toxicity, and easy leakage, welding will be used, which is safer and reduces maintenance costs.

[0003] In pipeline welding, it is necessary to first position the two sections of pipeline and then perform the welding operation. However, the common positioning devices currently can only simply fix the pipeline, and pipeline welding usually cannot be completed in one go. It is necessary to first weld the upward half circle of the pipeline and then weld the inner half circle of the pipeline. Therefore, with the current pipeline positioning device, after half of the pipeline is welded, the pipeline needs to be removed from the positioning device, rotated half a circle, and then clamped on the positioning device again before welding the inner half circle. This method not only increases the process and increases the labor intensity of the staff, but also repeated disassembly and re-installation will also cause welding accuracy to a certain extent and reduce the quality of the weld.

[0004] Therefore, it is necessary to provide a new positioning device for pipeline welding to solve the above technical problems. Utility Model Content

[0005] The technical problem solved by the utility model is to provide a positioning device for pipeline welding which is convenient to operate, reduces the labor intensity of workers, and improves welding efficiency and quality.

[0006] In order to solve the above technical problems, the positioning device for pipeline welding provided by the utility model includes: a fixed base plate and a mounting frame fixedly installed on the top of the fixed base plate, a limit rod fixedly installed on the mounting frame, two sliding plates slidably installed on the limit rod, a transverse plate fixedly installed on the top of the two sliding plates, a rotating cylinder rotatably installed on the two transverse plates, two springs are sleeved on the limit rod, the ends of the two springs away from each other are respectively fixedly connected to the inner walls on both sides of the mounting frame, and the ends of the two springs close to each other are respectively fixedly connected to the outer walls on the side of the two sliding plates away from each other.

[0007] Preferably, both sliding plates are provided with mounting holes, and the two rotating cylinders respectively penetrate the two mounting holes. Two mounting rings are fixedly mounted on the outer walls of the two rotating cylinders, and the four mounting rings extend into the two rotating cylinders respectively.

[0008] Preferably, an outer ring is fixedly mounted on the outer wall of any rotating cylinder, a plurality of embedding holes are opened on the outer walls of the two outer rings, positioning pins are movably installed on the tops of the two transverse plates, and the bottom ends of the two positioning pins extend into the corresponding embedding holes.

[0009] Preferably, threaded cylinders are rotatably installed in the four mounting rings, adjusting rods are threadedly installed in the four threaded cylinders, clamping plates are fixedly installed on one end of the four threaded cylinders, and one side of the four clamping plates is set as an arc surface.

[0010] Preferably, external connecting plates are fixedly mounted on the outer walls of the two rotating cylinders, rotating shafts are rotatably mounted on the two external connecting plates, and two synchronous pulleys are fixedly sleeved on the outer walls of the two rotating shafts.

[0011] Preferably, a synchronous pulley 2 is fixedly sleeved on the outer wall of each of the four threaded cylinders, and a transmission belt is wound around each of the four synchronous pulleys 2 and the corresponding synchronous pulley 1.

[0012] Compared with the related art, the positioning device for pipeline welding provided by the utility model has the following beneficial effects:

[0013] The utility model provides a positioning device for pipeline welding. When welding the pipeline, the device fixes two sections of the pipeline in two rotating cylinders respectively, and with the help of the effect of two springs, the welding points can be tightly fitted together, thereby ensuring the neatness of the weld. At the same time, during the welding process, the welding position can be adjusted in angle. Compared with the traditional method, it can not only effectively avoid the situation of frequent disassembly and assembly of the pipeline, but also reduce the working procedures, and improve the efficiency and quality of pipeline welding to a certain extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A schematic structural diagram of a preferred embodiment of a positioning device for pipeline welding provided by the utility model;

[0015] Figure 2 for Figure 1 A schematic diagram of the top view of the mounting frame shown;

[0016] Figure 3 for Figure 1 The schematic diagram of the connection state between the transverse plate and the rotating cylinder shown;

[0017] Figure 4 for Figure 1 The side cross-sectional structure diagram of the transverse plate and the rotating cylinder shown;

[0018] Figure 5 for Figure 1 The side cross-sectional schematic diagram of the transverse plate and the rotating cylinder at another angle is shown.

[0019] Numbers in the figure: 1. Fixed base plate; 2. Mounting frame; 3. Limit rod; 4. Sliding plate; 5. Spring; 6. Transverse plate; 7. Rotating cylinder; 8. Bearing; 9. Mounting ring; 10. Outer ring; 11. Embedded hole; 12. Positioning pin rod; 13. External plate; 14. Rotating shaft; 15. Synchronous pulley 1; 16. Threaded cylinder; 17. Adjusting rod; 18. Clamping plate; 19. Synchronous pulley 2; 20. Transmission belt. DETAILED DESCRIPTION

[0020] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0021] Please refer to Figure 1-Figure 5 ,in, Figure 1 A schematic structural diagram of a preferred embodiment of a positioning device for pipeline welding provided by the utility model; Figure 2 for Figure 1 A schematic diagram of the top view of the mounting frame shown; Figure 3 for Figure 1 The schematic diagram of the connection state between the transverse plate and the rotating cylinder shown; Figure 4 for Figure 1 The side cross-sectional structure diagram of the transverse plate and the rotating cylinder shown; Figure 5 for Figure 1 The side cross-sectional schematic diagram of the transverse plate and the rotating cylinder at another angle is shown. The positioning device for pipeline welding includes: a fixed base plate 1 and a mounting frame 2 fixedly mounted on the top of the fixed base plate 1, a limit rod 3 fixedly mounted on the mounting frame 2, the limit rod 3 is located in the middle of the mounting frame 2, the limit rod 3 is fixedly mounted on the inner walls of both sides of the mounting frame 2, two sliding plates 4 are slidably mounted on the limit rod 3, the tops of the two sliding plates 4 both extend to the top of the mounting frame 2, the two sliding plates 4 are symmetrically arranged based on the midpoint of the limit rod 3, the tops of the two sliding plates 4 are fixedly mounted with transverse plates 6, and the two transverse plates 6 are rotatably mounted with a rotating cylinder 7, combined with Figure 1 As shown, two sliding rods are fixedly installed on the inner walls on both sides of the mounting frame 2, two lugs are fixedly installed on the bottom of the two sliding plates 4, the two sliding rods pass through the corresponding two lugs and are slidably connected thereto, and two springs 5 ​​are sleeved on the limit rod 3, and the ends of the two springs 5 ​​away from each other are respectively fixedly connected to the inner walls on both sides of the mounting frame 2, and the ends of the two springs 5 ​​close to each other are respectively fixedly connected to the outer walls on the side of the two sliding plates 4 away from each other.

[0022] Both sliding plates 4 are provided with mounting holes, and the two rotating cylinders 7 pass through the two mounting holes respectively. Bearings 8 are fixedly sleeved on the outer walls of the two rotating cylinders 7, and the outer walls of the two bearings 8 are fixedly connected to the inner walls of the two mounting holes respectively. Two mounting rings 9 are fixedly installed on the outer walls of the two rotating cylinders 7, and the four mounting rings 9 extend into the two rotating cylinders 7 respectively. The two mounting rings 9 on any rotating cylinder 7 are symmetrically arranged based on the midpoint of the rotating cylinder 7.

[0023] An outer sleeve 10 is fixedly sleeved on the outer wall of any rotating cylinder 7, and the two outer sleeves 10 are located on the side away from each other of the two transverse plates 6. A rotating wheel is fixedly installed on the outer wall of the two rotating cylinders 7. A plurality of embedded holes 11 are opened on the outer wall of the two outer sleeves 10. The embedded holes 11 are rectangular grooves, and the plurality of embedded holes 11 are distributed in a circular array. Positioning pins 12 are movably installed on the top of the two transverse plates 6. The bottom ends of the two positioning pins 12 extend into the corresponding embedded holes 11. Figure 3 As shown, side plates are fixedly mounted on the tops of the two transverse plates 6, and two positioning pin rods 12 are movably mounted on the two side plates respectively.

[0024] A threaded tube 16 is rotatably installed in each of the four mounting rings 9, and an adjusting rod 17 is threadedly installed in each of the four threaded tubes 16. The four threaded tubes 16 respectively penetrate the four mounting rings 9 and extend into the two rotating tubes 7 respectively. A clamping plate 18 is fixedly installed on one end of the four threaded tubes 16, and one side of the four clamping plates 18 is set as an arc surface. Support rods are fixedly installed on the four clamping plates 18, and the four support rods respectively penetrate the two rotating tubes 7 and are slidably connected thereto.

[0025] An external plate 13 is fixedly installed on the outer wall of the two rotating cylinders 7, and a rotating shaft 14 is rotatably installed on the two external plates 13. Both ends of the two rotating shafts 14 extend to the outside of the two external plates 13 respectively, and hand-held wheels are fixedly installed on both ends of the two rotating shafts 14. Two synchronous pulleys 15 are fixedly sleeved on the outer walls of the two rotating shafts 14, and the four synchronous pulleys 15 are symmetrically arranged based on the midpoints of the two rotating shafts 14.

[0026] The outer walls of the four threaded cylinders 16 are fixedly sleeved with synchronous pulleys 2 19 , which correspond to the four synchronous pulleys 15 , respectively. The four synchronous pulleys 2 19 and the corresponding synchronous pulleys 1 15 are wound with transmission belts 20 .

[0027] The working principle of the positioning device for pipeline welding provided by the utility model is as follows:

[0028] When welding operations need to be performed on two pipes, the worker can first pull the transverse plate 6 laterally. The transverse plate 6 moves laterally on the limiting rod 3, causing the sliding plate 4 to compress the spring 5, so that the spring 5 is in a compressed energy storage state. At this time, the transverse plate 6 can be limited by a blocking method to prevent it from moving. Then, a pipe is placed in the rotating cylinder 7 on the sliding plate 4. When placed, the pipe is located on the clamping plate 18 below and completely passes through the rotating cylinder 7.

[0029] Then, the hand wheel is rotated. The rotation of the hand wheel will drive the rotating shaft 14 to rotate, thereby driving the two synchronous pulleys 15 to rotate. After the two synchronous pulleys 15 rotate, they will drive the two synchronous pulleys 2 19 to rotate under the transmission effect of the two transmission belts 20, thereby driving the two threaded cylinders 16 to rotate. The rotation of the threaded cylinder 16 will make the two adjusting rods 17 approach each other, and then drive the two clamping plates 18 approach each other, and finally fix the pipe in the rotating cylinder 7 through the two clamping plates 18.

[0030] Another section of the pipe is fixed in another rotating cylinder 7 in the above manner. At this time, the limit of the two transverse plates 6 is released. Under the reset effect of the two springs 5, the two transverse plates 6 move toward each other, so that the ends of the two pipes close to each other fit tightly together.

[0031] Then the pipeline can be welded. After welding half a circle, the staff can pull out the two positioning pins 12 upwards to release the limiting effect on the rotating cylinder 7, so that the rotating wheel can be rotated to drive the rotating cylinder 7 to rotate. Since the two pipelines have been preliminarily welded together, when one side of the rotating cylinder 7 rotates, the two sides will rotate together. After turning the pipeline half a circle, the two positioning pins 12 are reinserted to limit the two rotating cylinders 7 again, so that the welding operation can be carried out on the other half circle.

[0032] Compared with the related art, the positioning device for pipeline welding provided by the utility model has the following beneficial effects:

[0033] The utility model provides a positioning device for pipeline welding. When welding the pipeline, the device fixes two sections of the pipeline in two rotating cylinders 7 respectively, and with the help of the effect of two springs 5, the welding points can be closely fitted together, thereby ensuring the neatness of the weld. At the same time, during the welding process, the welding position can be adjusted in angle. Compared with the traditional method, it can not only effectively avoid the situation of frequent disassembly and assembly of the pipeline, but also reduce the working procedures, thereby improving the efficiency and quality of pipeline welding to a certain extent.

[0034] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A positioning device for pipeline welding, comprising: A fixed base plate and a mounting frame fixedly installed on the top of the fixed base plate, characterized in that a limit rod is fixedly installed on the mounting frame, two sliding plates are slidably installed on the limit rod, a transverse plate is fixedly installed on the top of the two sliding plates, a rotating cylinder is rotatably installed on the two transverse plates, two springs are sleeved on the limit rod, one end of the two springs away from each other is fixedly connected to the inner walls on both sides of the mounting frame, and one end of the two springs close to each other is fixedly connected to the outer wall on one side of the two sliding plates away from each other.

2. The positioning device for pipeline welding according to claim 1, characterized in that: The two sliding plates are each provided with a mounting hole, the two rotating cylinders respectively penetrate the two mounting holes, two mounting rings are fixedly mounted on the outer walls of the two rotating cylinders, and the four mounting rings extend into the two rotating cylinders respectively.

3. The positioning device for pipeline welding according to claim 2, characterized in that: An outer ring is fixedly mounted on the outer wall of any one of the rotating cylinders, a plurality of embedding holes are opened on the outer walls of the two outer rings, positioning pins are movably mounted on the tops of the two transverse plates, and the bottom ends of the two positioning pins extend into the corresponding embedding holes.

4. The positioning device for pipeline welding according to claim 3, characterized in that: A threaded barrel is rotatably installed in each of the four mounting rings, an adjusting rod is threadably installed in each of the four threaded barrels, a clamping plate is fixedly installed on one end of each of the four threaded barrels, and one side of each of the four clamping plates is set as an arc surface.

5. The positioning device for pipeline welding according to claim 4, characterized in that: An external connecting plate is fixedly mounted on the outer walls of the two rotating cylinders, a rotating shaft is rotatably mounted on the two external connecting plates, and two synchronous pulleys are fixedly sleeved on the outer walls of the two rotating shafts.

6. The positioning device for pipeline welding according to claim 5, characterized in that: The outer walls of the four threaded cylinders are all fixedly sleeved with synchronous pulleys 2, and the four synchronous pulleys 2 and the corresponding synchronous pulleys 1 are all wound with transmission belts.

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