A tubing welding assembly line

Abstract

The application discloses a kind of oil pipe welding assembly line, including fixed seat and limiting band, the fixed seat is evenly provided with multiple, the fixed seat is used to clamp oil pipe, the limiting band is sleeved in the limiting cooperation position of two adjacent oil pipes, the limiting band is arranged in pairs at the both ends of oil pipe, the limiting band exerts force on the oil pipe by elastic constriction, and the resultant force of the force exerted on the oil pipe by the limiting band is zero.By such design, for the special oil pipe flange welding method of long length or shape winding, it is no longer necessary to replace the clamping device matched therewith, by the cooperation of fixed seat and limiting band, the force generated by the stable oil pipe is transferred to the oil pipe itself by limiting band, and the limiting band itself is elastic, which can adapt to various shapes of oil pipe, after the oil pipe is constrained by limiting band and fixed seat, the oil pipe can maintain its stability when welding flange.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of oil pipe assembly, and particularly relates to an oil pipe welding assembly line. BACKGROUND

[0002] At present, most hydraulic oil pipes are made of metal materials, and due to the product structure and performance, the oil pipes and flanges need to be welded by argon arc welding. Before the two are welded by argon arc welding, the flange and the oil pipe need to be positioned and fixed to maintain the stability of the oil pipe. If the staff holds the pipe for a long time, it is very difficult to maintain a motion and the stability is not easy to control, thereby causing welding deviation, high scrap rate, low work efficiency and other problems. When using a mechanical device to clamp, the structure of some oil pipes is special or the length is long, and multiple clamps must be used to fix them. If only part of the oil pipes is fixed, the pipe body at the position far from the fixed point will shake, and it is difficult to maintain stability during welding of the flange. Moreover, when welding oil pipes of different shapes, clamps matching the shapes of the oil pipes need to be used, which is high in cost. SUMMARY

[0003] The present application aims to provide an oil pipe welding assembly line to solve the technical problems that the structure of some oil pipes is special, multiple clamps must be used to fix them, the work efficiency is low, and when processing another batch of oil pipes of different shapes, clamps matching the shapes need to be replaced, which is high in cost.

[0004] To achieve the above-mentioned purpose, the specific technical scheme of the oil pipe welding assembly line is as follows:

[0005] An oil pipe welding assembly line, comprising a fixing seat and a limiting belt, the fixing seat is uniformly provided with multiple fixing seats, the fixing seat is used for clamping the oil pipe, the limiting belt is sleeved on the limiting matching position of two adjacent oil pipes, the limiting belt is arranged in pairs at both ends of the oil pipe, the limiting belt applies force to the oil pipe through elastic contraction, and the resultant force of the force applied to the oil pipe by the limiting belt is zero. Through such design, when welding the flange of a special oil pipe with long length or curved shape, it is no longer necessary to replace the clamping device matching the oil pipe. The force generated by the fixing seat and the limiting belt is transferred to the oil pipe itself, the limiting belt itself is elastic, and can adapt to oil pipes of various shapes. After the oil pipe is constrained by the limiting belt and the fixing seat, the oil pipe can maintain its stability during welding of the flange.

[0006] Further, the limiting position of the oil pipe is set according to the length of the oil pipe, and one limiting position is set every 10-15 cm from the clamping position of the oil pipe by the fixing base to the two ends of the oil pipe, and when the overall length of the oil pipe is less than 30 cm, the limiting position is set at the two ends of the oil pipe. Through such a design, the limiting belt is bound on the limiting position to limit the oil pipe, and when the length of the oil pipe is relatively long, the limiting belt can be set at multiple intervals on the oil pipe, so that the shape of the oil pipe itself can be maintained as much as possible and the oil pipe is stabilized.

[0007] Further, the fixing base clamps the gravity center position of the oil pipe, and the fixing base further comprises a clamping reinforcing cover, the clamping reinforcing cover comprises a deformation layer and a fastening screw arranged above the clamping reinforcing cover, the deformation layer is deformed by extrusion with the oil pipe to strengthen the clamping of the fixing base on the oil pipe, and the fastening screw is used for the cooperative connection of the clamping reinforcing cover and the fixing base. Through such a design, the fixing base clamps the gravity center position of the oil pipe, so that the gravity of the two ends of the oil pipe extending from the fixing base is relatively balanced, and when the clamping of the fixing base on the oil pipe is not stable enough, the clamping reinforcing cover can be used, and the deformation layer of the clamping reinforcing cover can fill the gap between the fixing base and the oil pipe by deforming itself, thereby increasing the clamping force of the fixing base on the oil pipe.

[0008] Further, the fixing base is arranged on a rotating device, the rotating device comprises a base, a rotating disc and a rotating belt, the sidewall of the base is fixed with the rotating disc, used for supporting the rotating disc and reserving a rotating space at the bottom of the rotating disc, and the rotating belt is arranged around the peripheral wall of the rotating disc, and the rotating belt drives the fixing base to rotate to realize the rotation of the oil pipe. Through such a design, the fixing base is arranged on the rotating device, which can realize automatic flange assembly, and the worker only needs to fix the oil pipe on the fixing base and assemble the limiting belt in place, and the oil pipe reaches the flange assembly position for assembly with the operation of the rotating device.

[0009] Further, the rotating device is provided with a flange assembly device on both sides, the flange assembly device comprises a lifting column and an assembly arm, the assembly arm is movably connected with the lifting column through a rotary joint, and the lifting column is matched with the rotary joint to adjust the position of the assembly arm to adapt to the position of the oil pipe. Through such a design, the lifting column and the rotary joint cooperate with each other to lift the assembly arm to the corresponding position when the flange assembly work is performed on the oil pipe with different shapes and lengths.

[0010] Further, the assembly arm is provided with a telescopic slide and a guide rod, the telescopic slide is parallel to the moving direction of the guide rod, the front end of the telescopic slide is provided with a support plate, the support plate is used for mounting a chuck for clamping the flange to be welded, the chuck and the support plate are provided with guide holes corresponding to the positions of the openings of the flange to be welded, and the guide holes provide telescopic space for the guide rod.

[0011] Further, the guide rod is overlapped with the axis of the opening of the flange to be welded and the guide hole, the guide rod is passed out of the opening and the guide hole and is connected with the pipe mouth of the oil pipe, the telescopic slide drives the flange to be welded to move along the telescopic direction of the guide rod, and the flange to be welded is pushed from the guide rod to the oil pipe. Through the design, the guide rod is not easily hindered when passing through the opening of the flange to be welded and the guide hole, and the guide piece is connected with the pipe mouth of the oil pipe as a first structure, and then the flange to be welded is pushed to the oil pipe by the guide piece. Such a process can ensure that the flange to be welded reaches the assembly position smoothly.

[0012] Further, the side surface of the rotating disc is provided with a rotating motor, and the rotating motor provides power for the rotating device.

[0013] Further, the part of the fixed seat clamping the oil pipe is also provided with a flexible layer, the flexible layer increases the friction between the fixed seat and the oil pipe and prevents the clamping force of the fixed seat from being too large to damage the oil pipe. Through the design, the flexible layer of the fixed seat is in direct contact with the oil pipe when the oil pipe is clamped by the fixed seat, and the flexible layer is slightly deformed when clamping the oil pipe, which is not easy to damage and increases the friction force to clamp more tightly.

[0014] Further, the contact part of the limiting belt and the pipe body is also provided with a widened part, the widened part increases the contact area between the limiting belt and the oil pipe, and strengthens the stabilizing effect of the limiting belt on the oil pipe. Through the design, the widened part of the limiting belt can disperse the pulling force of the limiting belt on the oil pipe, and protect the oil pipe from being damaged by too concentrated pulling force.

[0015] The beneficial effects of the present application are: for the special oil pipe welding flange with long length or zigzag shape, the clamping device matched with the special oil pipe welding flange does not need to be replaced, the force generated by the stable oil pipe is transferred to the oil pipe itself through the cooperation of the fixed seat and the limiting belt, and the limiting belt itself is elastic and can adapt to various shapes of oil pipes. After the oil pipe is constrained by the limiting belt and the fixed seat, the oil pipe can maintain its stability when the flange is welded by the worker. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall first-view structure of the present invention;

[0017] Figure 2 This is a schematic diagram of the flange assembly device of the present invention;

[0018] Figure 3 This is a schematic diagram of the fixing seat and oil pipe structure of the present invention;

[0019] Figure 4 This is a schematic diagram of the overall second-view structure of the present invention;

[0020] Figure 5 This is a schematic diagram of the telescopic slider, support arm, chuck, and flange to be welded according to the present invention.

[0021] Figure 6 This is a schematic diagram of the support arm structure of the present invention;

[0022] Figure 7 This is a schematic diagram of the guide roller structure of the present invention;

[0023] Figure 8 This is a force analysis diagram showing the tension of two limiting belts on one end of the oil pipe of the present invention;

[0024] Figure 9 This is a schematic diagram of the clamping reinforcement cover structure of the present invention;

[0025] Figure 10 This is a schematic diagram of the widened limiting band structure of the present invention;

[0026] Figure 11 This is a schematic cross-sectional view of the guide roller and the oil pipe of the present invention.

[0027] The markings in the diagram are as follows: 1. Fixed seat; 2. Limiting band; 3. Oil pipe; 4. Rotating device; 5. Base; 6. Turntable; 7. Rotating band; 8. Rotation space; 9. Lifting column; 10. Assembly arm; 11. Rotary joint; 12. Telescopic slider; 13. Guide roller; 14. Support plate; 15. Chuck; 16. Opening; 17. Guide hole; 18. Flange to be welded; 19. Rotating motor; 20. Pipe opening; 21. Conical guide surface; 22. Flexible layer; 23. Clamping reinforcing cover; 24. Deformable layer; 25. Fastening screw; 26. Widened section; 27. Limiting mating position. Detailed Implementation

[0028] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0029] In this invention, the limiting band is made of natural rubber or synthetic rubber, and the thickness of the limiting band is 0.6-2mm.

[0030] like Figure 8 The force analysis shown (analyzing one end of the tubing under the constricting forces of two restraining bands) illustrates the following: F1 is the pulling force of the left restraining band pulling the tubing to the left, and F2 is the pulling force of the right restraining band providing to the tubing to the right. The magnitudes of F1 and F2 are influenced by the degree of deformation of the restraining bands. When the tubing tends to sway to the left, it causes the right restraining band to deform, resulting in the stretching of the right restraining band and an increase in F2. This increase in F2 further pulls the tubing to the right, which in turn stretches the left restraining band, increasing F1. This force process gradually drives F1 and F2 to reach equilibrium, ultimately stabilizing the tubing. Any swaying tendencies in other directions will also be quickly pulled back by the combined force of F1 and F2, rapidly restoring the tubing's stability.

[0031] like Figures 1 to 11 As shown

[0032] Example 1

[0033] An oil pipe welding production line includes a fixing seat 1 and a limiting band 2. Multiple fixing seats 1 are evenly arranged and are used to clamp oil pipes 3. The limiting band 2 is sleeved on the limiting engagement position 27 of two adjacent oil pipes 3. The limiting band 2 is arranged in pairs at both ends of the oil pipes 3. The limiting band 2 applies a force to the oil pipes 3 through elastic contraction. The resultant force of the force applied by the limiting band 2 to the oil pipes 3 is zero.

[0034] The above embodiments are implemented as follows:

[0035] The worker installs the oil pipe 3 on the fixed seat 1, which locks the oil pipe 3 in place. The rotating device 4 operates intermittently, with the distance between the fixed seats 1 being the distance covered by one rotation of the rotating device 4. The rotating device 4 transports the first installed oil pipe 3 forward, and the worker installs the oil pipe 3 on the next fixed seat. At this time, limit straps 2 are fitted at the stress-bearing positions of the first and second installed oil pipes 3 to stabilize the oil pipes 3, and this cycle continues.

[0036] Example 2

[0037] The limiting engagement positions 27 of the oil pipe 3 are set according to the length of the oil pipe 3. Starting from the position where the oil pipe 3 is clamped by the fixing seat 1, a limiting engagement position 27 is set every 10-15cm towards both ends of the oil pipe 3. When the overall length of the oil pipe 3 is less than 30cm, the limiting engagement positions 27 are set at both ends of the oil pipe 3. The longer the oil pipe 3, the more prone it is to swaying. If the limiting band 2 is only set at the end of the oil pipe 3, the pulling force on the oil pipe 3 when the limiting band 2 is tightened is more obvious, and the deformation degree of the oil pipe 3 is higher. In this case, the position of the pipe opening 20 cannot be uniform when each oil pipe 3 reaches the assembly position.

[0038] The above embodiment is implemented as follows: each batch of oil pipes 3 with different shapes and lengths is analyzed. After the fixing seat 1 clamps the oil pipe 3, the length of the oil pipe 3 extending from the fixing seat 1 is measured. At the position where the limiting band 2 can be fitted (some oil pipes 3 have special shapes and the initial part of the pipe body has a large bending angle, so the limiting band 2 cannot exert force), a limiting fit position 27 is set every 10-15cm, and the limiting band 2 is fitted on the limiting fit position 27.

[0039] Example 3

[0040] The fixing seat 1 clamps the center of gravity of the oil pipe 3. The fixing seat 1 also includes a clamping reinforcing cover 23. The clamping reinforcing cover 23 includes a deformable layer 24 and a fastening screw 25 disposed above the clamping reinforcing cover 23. The deformable layer 24 is squeezed and deformed by the oil pipe 3 to strengthen the clamping of the oil pipe 3 by the fixing seat 1. The fastening screw 25 is connected to the fixing seat 1 by the clamping reinforcing cover 23.

[0041] The above embodiment is implemented as follows: the clamping of the oil pipe 3 by the fixing seat 1 is mainly to prevent the oil pipe 3 from rotating in a circle with the axis as the center, which would cause the position of the pipe opening 20 to be inconsistent. When the ordinary fixing seat 1 clamps some small or light oil pipes 3, it has enough force to hold the oil pipe 3 tightly. However, when the oil pipe 3 is large and heavy, it is necessary to install a clamping reinforcing cover 23 on the fixing seat 1 to strengthen the clamping force of the fixing seat 1 on the oil pipe 3. The operator connects the clamping reinforcing cover 23 to the fixing seat 1 by tightening the fastening screw 25. During the process of tightening the fastening screw 25, the deformable layer 24 on the clamping reinforcing cover 23 is squeezed by the force and deforms, filling the gap between the fixing seat 1 and the oil pipe 3, thus clamping the oil pipe 3 tightly.

[0042] Example 4

[0043] The fixed base 1 is mounted on the rotating device 4. The rotating device 4 includes a base 5, a turntable 6, and a rotating belt 7. The base 5 is fixed to the side wall of the turntable 6 to support the turntable 6 and to leave a rotation space 8 at the bottom of the turntable 6. The rotating belt 7 is arranged around the circumference of the turntable 6. The rotating belt 7 drives the fixed base 1 to rotate, thereby rotating the oil pipe 3.

[0044] The above embodiments are implemented as follows:

[0045] The rotating belt 7 drives the fixed seat 1 to rotate. The rotating belt 7 rotates intermittently. The distance between the fixed seats 1 is the distance that the rotating device 4 rotates once. The rotating space 8 is a space reserved for the fixed seat 1 under the turntable 6, so as to connect the head and tail of the entire equipment.

[0046] Example 5

[0047] Flange assembly devices are provided on both sides of the rotating device 4. The flange assembly device includes a lifting column 9 and an assembly arm 10. The assembly arm 10 is movably connected to the lifting column 9 through a rotating joint 11. The lifting column 9 and the rotating joint 11 cooperate to adjust the position of the assembly arm 10 to match the position of the oil pipe 3.

[0048] The assembly arm 10 is equipped with a telescopic slider 12 and a guide roller 13. The telescopic slider 12 and the guide roller 13 move in parallel directions. A support plate 14 is provided at the front end of the telescopic slider 12. The support plate 14 is used to install a chuck 15 for holding the flange 18 to be welded. The chuck 15 and the support plate 14 are provided with guide holes 17 at the positions corresponding to the openings 16 of the flange 18 to be welded. The guide holes 17 provide telescopic space for the guide roller 13.

[0049] The guide roller 13 overlaps with the axis of the opening 16 and the guide hole 17 of the flange to be welded 18. The guide roller 13 passes through the opening 16 and the guide hole 17 and connects with the pipe opening 20 of the oil pipe 3. The telescopic slider 12 drives the flange to be welded 18 to move along the telescopic direction of the guide roller 13, pushing the flange to be welded 18 from the guide roller 13 onto the oil pipe 3.

[0050] A rotating motor 19 is provided on the side of the turntable 6, which provides power to the rotating device 4.

[0051] The above embodiments are implemented as follows:

[0052] When a batch of oil pipes 3 need to be processed, the workers first set the movement data of the lifting column 9 and the rotating joint 11 so that the angle of the guide rod 13 is consistent with the pipe opening 20 of the oil pipe 3 to be connected. The workers install the oil pipes 3 one by one on the fixed seat 1 and stabilize them with the limit belt 2. The rotating device 4 transports the oil pipes 3 installed on the fixed seat 1 to the flange assembly position. At this time, the guide rod 13 passes through the guide hole 17 and the opening 16 of the flange to be welded 18 and connects with the pipe opening 20 of the oil pipe 3. The head of the guide rod 13 is a tapered guide surface 21 with a gradually increasing diameter. Even if the angle between the pipe opening 20 of the oil pipe 3 and the guide rod 13 is slightly deviated, it can be guided back by the tapered guide surface 21. After the guide rod 13 is connected with the pipe opening 20, the telescopic slider 12 drives the flange to be welded 18 held by the chuck 15 on the support plate 14 to push along the extension direction of the guide rod 13, pushing the flange to be welded 18 from the guide rod 13 to the oil pipe 3. At this time, the workers weld the flange to be welded 18 to the oil pipe 3 and fix it. After the welding is completed. The chuck 15 releases the flange 18 to be welded, and the telescopic slider 12 drives the support plate 14 and the chuck 15 to retract along the guide roller 13. At this time, the welding is completed. The rotating device 4 rotates once to send the welded oil pipe 3 out of the assembly position.

[0053] Example 6

[0054] A flexible layer 22 is also provided at the part of the fixing seat 1 that clamps the oil pipe 3. The flexible layer 22 increases the friction between the fixing seat 1 and the oil pipe 3 and prevents the fixing seat 1 from clamping the oil pipe 3 with excessive force.

[0055] Example 7

[0056] The portion of the limiting band 2 that contacts the pipe body is also provided with a widened portion 26, which increases the contact area between the limiting band 2 and the oil pipe 3, thereby strengthening the stabilizing effect of the limiting band 2 on the oil pipe 3.

[0057] It is understood that the present invention has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the invention. Furthermore, under the teachings of the present invention, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of the invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of the present invention.

Claims

1. A pipeline welding production line, characterized in that, The device includes a fixed base (1) and a limiting band (2). Multiple fixed bases (1) are evenly arranged and used to clamp oil pipes (3). The limiting bands (2) are fitted onto the limiting engagement positions (27) of two adjacent oil pipes (3). The limiting bands (2) are arranged in pairs at both ends of the oil pipes (3). The limiting bands (2) apply force to the oil pipes (3) through elastic contraction, and the resultant force of the force applied by the limiting bands (2) to the oil pipes (3) is zero. The fixed base (1) is mounted on a rotating device (4), which includes a base. The device comprises a base (5), a turntable (6), and a rotating belt (7). The base (5) is fixed to the side wall of the turntable (6) to support the turntable (6) and to provide a rotation space (8) for the bottom of the turntable (6). The rotating belt (7) surrounds the circumference of the turntable (6) and drives the fixed base (1) to rotate, thereby rotating the oil pipe (3). Flange assembly devices are provided on both sides of the rotating device (4). The flange assembly device includes a lifting column (9) and an assembly arm (10). The assembly arm (10) is connected to the lifting column (9) via a rotating joint (11). The lifting column (9) is connected to the rotating joint (11) to adjust the position of the assembly arm (10) to match the position of the oil pipe (3). The assembly arm (10) is equipped with a telescopic slider (12) and a guide rod (13). The telescopic slider (12) and the guide rod (13) move in parallel directions. The front end of the telescopic slider (12) is equipped with a support plate (14). The support plate (14) is used to install a chuck (15) for holding the flange to be welded (18). The chuck (15) and the support plate (14) are aligned with the opening (16) of the flange to be welded (18). A guide hole (17) is provided at the corresponding part, and the guide hole (17) provides a telescopic space for the guide rod (13); the axis of the guide rod (13) overlaps with the opening (16) of the flange to be welded (18) and the guide hole (17). The guide rod (13) passes through the opening (16) and the guide hole (17) and connects with the pipe opening (20) of the oil pipe (3). The telescopic slider (12) drives the flange to be welded (18) to move along the telescopic direction of the guide rod (13) and pushes the flange to be welded (18) from the guide rod (13) onto the oil pipe (3).

2. According to claim 1, the limiting fit position (27) of the oil pipe (3) is set according to the length of the oil pipe (3). A limiting fit position (27) is set every 10-15cm from the position where the oil pipe (3) is clamped by the fixing seat (1) to both ends of the oil pipe (3). When the overall length of the oil pipe (3) is less than 30cm, the limiting fit position (27) is set at both ends of the oil pipe (3).

3. According to claim 1, the fixed seat (1) clamps the center of gravity of the oil pipe (3), and the fixed seat (1) further includes a clamping reinforcing cover (23). The clamping reinforcing cover (23) includes a deformable layer (24) and a fastening screw (25) disposed above the clamping reinforcing cover (23). The deformable layer (24) is squeezed against the oil pipe (3) to generate deformation, thereby strengthening the clamping of the fixed seat (1) on the oil pipe (3). The fastening screw (25) is connected to the fixed seat (1) by the clamping reinforcing cover (23).

4. The oil pipe welding production line according to claim 1, characterized in that, A rotating motor (19) is provided on the side of the turntable (6), and the rotating motor (19) provides power to the rotating device (4).

5. The oil pipe welding production line according to claim 1, 2, or 3, characterized in that, The fixed seat (1) is provided with a flexible layer (22) at the part where it clamps the oil pipe (3). The flexible layer (22) increases the friction between the fixed seat (1) and the oil pipe (3) and prevents the fixed seat (1) from clamping the oil pipe (3) with excessive force.

6. The oil pipe welding production line according to claim 1, characterized in that, The limiting band (2) is further provided with a widening part (26) in contact with the pipe body. The widening part (26) increases the contact area between the limiting band (2) and the oil pipe (3) and strengthens the stabilizing effect of the limiting band (2) on the oil pipe (3).

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