An apparatus for cold-drawing petroleum pipes

Abstract

This application relates to a cold drawing equipment for oil pipes, specifically in the field of steel pipe cold drawing equipment. It includes an equipment frame comprising a worktable and auxiliary supports. The auxiliary supports are evenly and vertically installed on the lower end face of the worktable and are fixedly connected to it. Two sets of pipe limiting components are symmetrically installed on the upper end face of the worktable, and these components are slidably connected to the worktable. A control component for adjusting the distance between the two sets of pipe limiting components is installed on the worktable. This application allows for convenient adjustment of the distance between the pipe limiting components using the control component, accommodating oil pipes of different diameters and increasing the equipment's applicability. The combination of the external clamping method of the fixed clamp and the internal support and top clamping method of the traction clamp provides secure clamping of the oil pipe from multiple directions, ensuring the stability of the oil pipe during the cold drawing process and improving the quality of the cold drawing process.

Description

Technical Field

[0001] This application relates to the technical field of cold drawing equipment for steel pipes, and in particular to a cold drawing equipment for oil pipes. Background Technology

[0002] Traditional cold drawing equipment for oil pipes typically consists of a frame, clamping mechanism, traction mechanism, and limiting components. The frame, as the basic support structure, bears the forces exerted throughout the cold drawing process. With the continuous development of the petroleum industry, oil pipe specifications are becoming increasingly diverse, ranging from smaller diameter pipelines to larger diameter casing pipes; different applications have significantly different dimensional requirements for oil pipes.

[0003] Traditional cold-drawing equipment often uses a fixed-spacing design for its limiting components, which cannot be flexibly adjusted according to the diameter of the oil pipe. This results in a single machine being able to accommodate only one or a few specifications of oil pipe, reducing equipment utilization and increasing equipment investment costs for enterprises. In terms of clamping stability, the clamping mechanisms of traditional equipment have significant shortcomings. Some machines only use a single external clamping method to fix the oil pipe, that is, applying clamping force from the outside of the oil pipe through clamping components. This method is prone to causing pipe deformation or even damage due to concentrated force on oil pipes with thin walls or large diameters. Utility Model Content To address the issues of poor stability and insufficient flexibility in existing cold drawing equipment, this application provides a cold drawing equipment for oil pipes.

[0004] The cold drawing equipment for oil pipes provided in this application adopts the following technical solution: A cold drawing equipment for oil pipes includes an equipment frame, which includes a worktable and auxiliary supports. The auxiliary supports are uniformly and vertically installed on the lower end face of the worktable and are fixedly connected to the worktable. Two sets of pipe limiting components are symmetrically installed on the upper end face of the worktable. The pipe limiting components are slidably connected to the worktable. A control component for adjusting the distance between the two sets of pipe limiting components is installed on the worktable. Fixed clamps and traction clamps are respectively provided at both ends of the pipe limiting components. The fixed clamps are fixedly installed on the upper end face of the worktable, and the traction clamps are slidably installed on the upper end face of the worktable. A transverse hydraulic cylinder for driving the traction clamps to move horizontally is also installed on the lower end face of the worktable.

[0005] By adopting the above technical solution, the equipment frame consists of a workbench and an auxiliary support. The auxiliary support provides stable support for the workbench, ensuring the overall stability of the equipment. Two sets of pipe limiting components symmetrically installed on the workbench effectively limit the oil pipe, preventing it from shifting during cold drawing. The control component allows for easy adjustment of the distance between the two sets of pipe limiting components to accommodate oil pipes of different diameters. Fixed clamps and traction clamps are used to fix and traction the oil pipe, respectively. A transverse hydraulic cylinder drives the traction clamp to move horizontally, realizing the cold drawing operation of the oil pipe and improving the efficiency and accuracy of the cold drawing process.

[0006] Optionally, the workbench includes a main platform and an extension platform for mounting the traction clamp. The extension platform is installed on one side of the main platform and is integrally formed with the main platform.

[0007] By adopting the above technical solution, the main platform of the workbench is used to install components such as pipe limiting components, the extension platform provides installation space for the traction clamp, and the one-piece molding design ensures the structural strength and stability of the workbench, which is conducive to improving the service life of the equipment.

[0008] Optionally, the pipe limiting assembly includes a mounting base and a steel pipe support roller. The mounting base is slidably mounted on the upper end face of the mounting base and is disposed at both ends of the steel pipe support roller. The mounting base is rotatably connected to the steel pipe support roller.

[0009] By adopting the above technical solution, the mounting base of the pipeline limiting component is slidably installed on the workbench, facilitating position adjustment according to the diameter of the oil pipe. The steel pipe support roller is rotatably connected to the mounting base. During the cold drawing process of the oil pipe, the steel pipe support roller can rotate with the movement of the oil pipe, reducing friction between the oil pipe and the limiting component, minimizing damage to the surface of the oil pipe, and providing better support and limiting for the oil pipe.

[0010] Optionally, the control component includes a first double-ended screw, a second double-ended screw, and a drive motor. The first and second double-ended screws are rotatably mounted on opposite sides of the upper surface of the main plate, and the head of the first double-ended screw is connected to the second double-ended screw via a synchronous belt. The drive motor is fixedly mounted on an auxiliary bracket and is used to drive the second double-ended screw to rotate.

[0011] By adopting the above technical solution, the control component drives the second double-ended screw to rotate via a drive motor, and then drives the first double-ended screw to rotate synchronously via a synchronous belt. Since the first and second double-ended screws are double-ended screw structures, the two sets of pipe limiting components can move simultaneously towards or away from each other during rotation, realizing rapid adaptation to oil pipes of different diameters, facilitating operation, and improving the versatility of the equipment.

[0012] Optionally, the fixing bracket includes an annular frame and an external clamping screw assembly. A central groove is provided at the center of the annular frame. The external clamping screw assembly is evenly installed on the annular frame, and the head of the external clamping screw assembly extends into the central groove. The external clamping screw assembly is threadedly connected to the annular frame.

[0013] By adopting the above technical solution, the central groove of the annular seat frame of the fixed clamp is used to place the oil pipe, and the external clamping screw assembly is evenly distributed on the annular seat frame. By rotating the external clamping screw assembly, its head can be inserted into the central groove and clamp the oil pipe. This external clamping method can fix the oil pipe from multiple directions, ensuring the stability of the oil pipe during the cold drawing process and preventing it from shaking and shifting.

[0014] Optionally, the traction clamp includes a movable seat, an inner support frame, and a top clamp assembly. The movable seat is slidably mounted on the extension platform, and the lower end of the movable seat is connected to a transverse hydraulic cylinder. The inner support frame is fixedly mounted on the head of the movable seat, and the top clamp assembly is fixedly mounted on the upper end face of the inner support frame.

[0015] By adopting the above technical solution, the central groove of the annular seat frame of the fixed clamp is used to place the oil pipe, and the external clamping screw assembly is evenly distributed on the annular seat frame. By rotating the external clamping screw assembly, its head can be inserted into the central groove and clamp the oil pipe. This external clamping method can fix the oil pipe from multiple directions, ensuring the stability of the oil pipe during the cold drawing process and preventing it from shaking and shifting.

[0016] Optionally, the inner support frame includes a polygonal frame and an inner clamping screw assembly. The inner clamping screw assembly is evenly installed on the inner side of the polygonal frame, and the head of the inner clamping screw assembly extends to the outside of the polygonal frame. The inner clamping screw assembly is threadedly connected to the polygonal frame.

[0017] By adopting the above technical solution, the polygonal frame of the inner support provides an installation base for the inner clamping screw assembly. The inner clamping screw assembly is evenly distributed on the inner side. By rotating the inner clamping screw assembly, its head extends out of the polygonal frame and tightens the inner wall of the oil pipe, thus fixing the oil pipe from the inside and enhancing the stability of the clamping. It is especially suitable for oil pipes with larger diameters.

[0018] Optionally, the top clamp assembly includes an F-shaped upright plate, a longitudinal hydraulic cylinder, and an arc-shaped clamping plate seat. The F-shaped upright plate is vertically fixed to the upper end face of the polygonal frame, the longitudinal hydraulic cylinder is vertically fixed to the head of the F-shaped upright plate, and the arc-shaped clamping plate seat is fixedly installed at the output end of the longitudinal hydraulic cylinder.

[0019] By adopting the above technical solution, the F-shaped vertical plate of the top clamping assembly provides installation support for the longitudinal hydraulic cylinder. The longitudinal hydraulic cylinder drives the arc-shaped clamping plate seat to move up and down, which can clamp the oil pipe from above. In conjunction with the inner support frame, it can achieve all-round clamping of the end of the oil pipe, further improving the clamping firmness.

[0020] In summary, this application includes at least one of the following beneficial technical effects: The control components allow for convenient adjustment of the spacing between the pipe limiting components, adapting to oil pipes of different diameters and improving the applicability of the equipment. The combination of the external clamping method of the fixed clamp and the internal support and top clamping method of the traction clamp can firmly clamp the oil pipe from multiple directions, ensuring the stability of the oil pipe during the cold drawing process and improving the quality of the cold drawing process. The reasonable design and simple operation of each component, such as the drive motor driving the control component, the transverse hydraulic cylinder driving the traction clamp, and the longitudinal hydraulic cylinder driving the top clamp component, reduces the labor intensity of operators and improves production efficiency. Attached Figure Description

[0021] Figure 1 This is a perspective view of the overall structure in the embodiments of this application.

[0022] Figure 2 yes Figure 1 Front view of the device shown.

[0023] Figure 3 yes Figure 1 Top view of the device shown.

[0024] Figure 4 This is a perspective view of the traction clamp seat in the embodiments of this application.

[0025] Figure 5 yes Figure 4 Side view of the device shown.

[0026] Explanation of reference numerals in the attached drawings: 1. Equipment frame; 11. Workbench; 111. Main platform; 112. Extension platform; 12. Auxiliary support; 2. Pipe limiting assembly; 21. Mounting seat; 22. Steel pipe support roller; 3. Control assembly; 31. First double-ended screw; 311. Synchronous belt; 32. Second double-ended screw; 33. Drive motor; 4. Fixed clamp; 41. Annular seat frame; 42. External clamping screw assembly; 5. Traction clamp; 51. Movable seat; 52. Internal support frame; 521. Polygonal frame; 522. Internal clamping screw assembly; 53. Top clamp assembly; 531. F-shaped vertical plate; 532. Longitudinal hydraulic cylinder; 533. Arc-shaped clamp seat; 6. Transverse hydraulic cylinder. Detailed Implementation

[0027] The present application will be further described in detail below with reference to the accompanying drawings.

[0028] This application discloses a cold drawing equipment for oil pipes. Example 1 Reference Figure 1 , Figure 2 and Figure 3 As shown, a cold-drawing equipment for oil pipes includes an equipment frame 1. The equipment frame 1 includes a worktable 11 and auxiliary supports 12. The auxiliary supports 12 are evenly and vertically installed on the lower end face of the worktable 11 and are fixedly connected to the worktable 11. Two sets of pipe limiting components 2 are symmetrically installed on the upper end face of the worktable 11. The pipe limiting components 2 are slidably connected to the worktable 11. A control component 3 for adjusting the distance between the two sets of pipe limiting components 2 is installed on the worktable 11. Fixed clamps 4 and traction clamps 5 are respectively provided at both ends of the pipe limiting components 2. The fixed clamps 4 are fixedly installed on the upper end face of the worktable 11, and the traction clamps 5 are slidably installed on the upper end face of the worktable 11. A transverse hydraulic cylinder 6 for driving the traction clamps 5 to move horizontally is also installed on the lower end face of the worktable 11. The equipment frame 1 is composed of the worktable 11 and the auxiliary supports 12. The auxiliary supports 12 provide stable support for the worktable 11, ensuring the overall stability of the equipment. Two sets of pipe limiting components 2 symmetrically installed on the workbench 11 can effectively limit the oil pipe and prevent it from shifting during cold drawing. The control component 3 can easily adjust the distance between the two sets of pipe limiting components 2 to accommodate oil pipes of different diameters. The fixed clamp 4 and the traction clamp 5 are used to fix and traction the oil pipe, respectively. The transverse hydraulic cylinder 6 drives the traction clamp 5 to move horizontally, realizing the cold drawing operation of the oil pipe and improving the efficiency and accuracy of the cold drawing process. The workbench 11 includes a main platform 111 and an extension platform 112 for mounting the traction clamp 5. The extension platform 112 is installed on one side of the main platform 111 and is integrally formed with the main platform 111. The main platform 111 of the workbench 11 is used to install components such as the pipe limiting components 2, and the extension platform 112 provides installation space for the traction clamp 5. The integral design ensures the structural strength and stability of the workbench 11 and helps to improve the service life of the equipment.

[0029] Reference Figure 3 As shown, the pipeline limiting assembly 2 includes a mounting base 21 and a steel pipe support roller 22. The mounting base 21 is slidably mounted on its upper end face, and the mounting base 21 is located at both ends of the steel pipe support roller 22. The mounting base 21 and the steel pipe support roller 22 are rotatably connected. The mounting base 21 of the pipeline limiting assembly 2 is slidably mounted on the worktable 11, which facilitates position adjustment according to the diameter of the oil pipe. The steel pipe support roller 22 is rotatably connected to the mounting base 21. During the cold drawing process of the oil pipe, the steel pipe support roller 22 can rotate with the movement of the oil pipe, reducing friction between the oil pipe and the limiting assembly, reducing damage to the surface of the oil pipe, and also providing better support and limiting for the oil pipe.

[0030] Reference Figure 1 and Figure 2As shown, the control component 3 includes a first double-ended screw 31, a second double-ended screw 32, and a drive motor 33. The first double-ended screw 31 and the second double-ended screw 32 are rotatably mounted on both sides of the upper surface of the main platform 111. The head of the first double-ended screw 31 is connected to the second double-ended screw 32 via a synchronous belt 311. The drive motor 33 is fixedly mounted on the auxiliary bracket 12 and is used to drive the second double-ended screw 32 to rotate. The control component 3 drives the second double-ended screw 32 to rotate via the drive motor 33, and then drives the first double-ended screw 31 to rotate synchronously via the synchronous belt 311. Since the first double-ended screw 31 and the second double-ended screw 32 are double-ended screw structures, when rotating, the two sets of pipe limiting components 2 can move simultaneously towards or away from each other, realizing rapid adaptation to oil pipes of different diameters, convenient operation, and improving the versatility of the equipment. The drive motor 33 can be a three-phase asynchronous motor of model Y2-100L-4, which has the advantages of high efficiency and stable performance.

[0031] Reference Figure 1 and Figure 2 As shown, the fixing clamp 4 includes an annular frame 41 and an external clamping screw assembly 42. A central groove is formed at the center of the annular frame 41. The external clamping screw assemblies 42 are evenly installed on the annular frame 41, with their heads extending into the central groove. The external clamping screw assemblies 42 are threadedly connected to the annular frame 41. The central groove of the annular frame 41 of the fixing clamp 4 is used to place the oil pipe. The external clamping screw assemblies 42 are evenly distributed on the annular frame 41. By rotating the external clamping screw assemblies 42, their heads can extend into the central groove and clamp the oil pipe. This external clamping method can fix the oil pipe from multiple directions, ensuring the stability of the oil pipe during the cold drawing process and preventing it from shaking or shifting.

[0032] Example 2 Reference Figure 1 and Figure 4 As shown, a cold drawing equipment for oil pipes includes an equipment frame 1. The equipment frame 1 includes a worktable 11 and an auxiliary support 12. The auxiliary support 12 is evenly and vertically installed on the lower end face of the worktable 11 and is fixedly connected to the worktable 11. Two sets of pipe limiting components 2 are symmetrically installed on the upper end face of the worktable 11. The pipe limiting components 2 are slidably connected to the worktable 11. A control component 3 for adjusting the distance between the two sets of pipe limiting components 2 is installed on the worktable 11. Fixed clamps 4 and traction clamps 5 are respectively provided at both ends of the pipe limiting components 2. The fixed clamps 4 are fixedly installed on the upper end face of the worktable 11, and the traction clamps 5 are slidably installed on the upper end face of the worktable 11. A transverse hydraulic cylinder 6 for driving the traction clamps 5 to move horizontally is also installed on the lower end face of the worktable 11.

[0033] Reference Figure 4 and Figure 5As shown, the traction clamp 5 includes a movable seat 51, an inner support frame 52, and a top clamp assembly 53. The movable seat 51 is slidably mounted on the extension platform 112, and its lower end is connected to the transverse hydraulic cylinder 6. The inner support frame 52 is fixedly mounted on the head of the movable seat 51, and the top clamp assembly 53 is fixedly mounted on the upper end face of the inner support frame 52. The central groove of the annular frame 41 of the fixed clamp 4 is used to place the oil pipe. The outer clamp screw assembly 42 is evenly distributed on the annular frame 41. By rotating the outer clamp screw assembly 42, its head can be inserted into the central groove and clamp the oil pipe. This external clamping method can fix the oil pipe from multiple directions, ensuring the stability of the oil pipe during the cold drawing process and preventing it from shaking and displacing. The inner support frame 52 includes a polygonal frame shell 521 and an inner clamping screw assembly 522. The inner clamping screw assembly 522 is evenly installed on the inner side of the polygonal frame shell 521, and the head of the inner clamping screw assembly 522 extends out of the polygonal frame shell 521. The inner clamping screw assembly 522 is threadedly connected to the polygonal frame shell 521. The polygonal frame shell 521 of the inner support frame 52 provides an installation base for the inner clamping screw assembly 522. The inner clamping screw assembly 522 is evenly distributed on the inner side. By rotating the inner clamping screw assembly 522, its head extends out of the polygonal frame shell 521 and tightens against the inner wall of the oil pipe, fixing the oil pipe from the inside and enhancing the stability of the clamping. This is especially suitable for oil pipes with larger diameters.

[0034] Reference Figure 4 and Figure 5 As shown, the top clamping assembly 53 includes an F-shaped upright plate 531, a longitudinal hydraulic cylinder 532, and an arc-shaped clamping plate seat 533. The F-shaped upright plate 531 is vertically fixed to the upper end face of the polygonal frame 521, the longitudinal hydraulic cylinder 532 is vertically fixed to the head of the F-shaped upright plate 531, and the arc-shaped clamping plate seat 533 is fixedly installed at the output end of the longitudinal hydraulic cylinder 532. The F-shaped upright plate 531 of the top clamping assembly 53 provides mounting support for the longitudinal hydraulic cylinder 532. The longitudinal hydraulic cylinder 532 drives the arc-shaped clamping plate seat 533 to move up and down, clamping the oil pipe from above. In conjunction with the inner support frame 52, it achieves omnidirectional clamping of the oil pipe end, further improving the clamping strength. The longitudinal hydraulic cylinder 532 can be an HSG engineering hydraulic cylinder, which features high load-bearing capacity and stable operation.

[0035] The implementation principle of the cold drawing equipment for oil pipes in this application embodiment is as follows: During the cold drawing operation of the oil pipe, according to the diameter of the oil pipe, the drive motor 33 is started, driving the second double-headed screw 32 to rotate. The first double-headed screw 31 rotates synchronously via the synchronous belt 311, causing the two sets of pipe limiting components 2 to move towards or away from each other, adjusting the distance between the two sets of pipe limiting components 2 to suit the diameter of the oil pipe. The oil pipe is placed on the steel pipe support rollers 22 of the two sets of pipe limiting components 2, with one end passing through the central groove of the annular seat frame 41 of the fixed clamp 4. The outer clamping screw assembly 42 is rotated, causing its head to extend into the central groove and clamp the oil pipe. The other end of the oil pipe is fitted onto the outside of the polygonal frame shell 521 of the inner support frame 52. The inner clamping screw assembly 522 is rotated, causing its head to extend out of the polygonal frame shell 521 and tighten the inner wall of the oil pipe. The longitudinal hydraulic cylinder 532 is started, driving the arc-shaped clamping plate seat 533 to move downwards, clamping the oil pipe from above. The transverse hydraulic cylinder 6 is activated, driving the traction clamp 5 to move horizontally and perform cold drawing on the oil pipe. During the cold drawing process, the steel pipe support roller 22 rotates with the movement of the oil pipe to reduce friction. After cold drawing is completed, first loosen the arc-shaped clamping plate seat 533 of the top clamping assembly 53 and the inner clamping screw group 522 of the inner support frame 52, then loosen the outer clamping screw group 42 of the fixing clamp 4, and remove the cold-drawn oil pipe.

[0036] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A cold drawing equipment for oil pipes, comprising an equipment frame (1), characterized in that: The equipment frame (1) includes a workbench (11) and an auxiliary support (12). The auxiliary support (12) is evenly and vertically installed on the lower end face of the workbench (11), and the auxiliary support (12) is fixedly connected to the workbench (11). Two sets of pipe limiting components (2) are symmetrically installed on the upper end face of the workbench (11). The pipe limiting components (2) are slidably connected to the workbench (11), and a control component (3) for adjusting the distance between the two sets of pipe limiting components (2) is installed on the workbench (11). Fixed clamps (4) and traction clamps (5) are respectively provided at both ends of the pipe limiting components (2). The fixed clamps (4) are fixedly installed on the upper end face of the workbench (11), and the traction clamps (5) are slidably installed on the upper end face of the workbench (11). A transverse hydraulic cylinder (6) for driving the traction clamps (5) to move horizontally is also installed on the lower end face of the workbench (11).

2. A petroleum tubing cold-drawing apparatus according to claim 1, wherein: The workbench (11) includes a main platform (111) and an extension platform (112) for mounting the traction clamp (5). The extension platform (112) is installed on one side of the main platform (111) and is integrally formed with the main platform (111).

3. A petroleum tubing cold-drawing apparatus according to claim 2, wherein: The pipe limiting assembly (2) includes a mounting base (21) and a steel pipe support roller (22). The mounting base (21) is slidably mounted on the upper end face of the mounting base (21), and the mounting base (21) is located at both ends of the steel pipe support roller (22). The mounting base (21) is rotatably connected to the steel pipe support roller (22).

4. A petroleum tube cold-drawing apparatus according to claim 3, wherein: The control component (3) includes a first double-ended screw (31), a second double-ended screw (32), and a drive motor (33). The first double-ended screw (31) and the second double-ended screw (32) are rotatably mounted on both sides of the upper surface of the main plate (111), and the head of the first double-ended screw (31) is connected to the second double-ended screw (32) through a synchronous belt (311). The drive motor (33) is fixedly mounted on the auxiliary bracket (12), and the drive motor (33) is used to drive the second double-ended screw (32) to rotate.

5. A petroleum tube cold-drawing apparatus according to claim 4, wherein: The fixed clamp (4) includes an annular seat frame (41) and an external clamping screw assembly (42). A central groove is provided at the center of the annular seat frame (41). The external clamping screw assembly (42) is evenly installed on the annular seat frame (41), and the head of the external clamping screw assembly (42) extends into the central groove. The external clamping screw assembly (42) is threadedly connected to the annular seat frame (41).

6. A petroleum tube cold-drawing apparatus according to claim 5, wherein: The traction clamp (5) includes a movable seat (51), an inner support frame (52), and a top clamp assembly (53). The movable seat (51) is slidably mounted on the extension platform (112), and the lower end of the movable seat (51) is connected to the transverse hydraulic cylinder (6). The inner support frame (52) is fixedly mounted on the head of the movable seat (51), and the top clamp assembly (53) is fixedly mounted on the upper end face of the inner support frame (52).

7. A petroleum tube cold-drawing apparatus according to claim 6, wherein: The inner support frame (52) includes a polygonal frame (521) and an inner clamping screw assembly (522). The inner clamping screw assembly (522) is evenly installed on the inner side of the polygonal frame (521), and the head of the inner clamping screw assembly (522) extends to the outside of the polygonal frame (521). The inner clamping screw assembly (522) is threadedly connected to the polygonal frame (521).

8. A petroleum tube cold-drawing apparatus according to claim 7, wherein: The top clamp assembly (53) includes an F-shaped upright plate (531), a longitudinal hydraulic cylinder (532), and an arc-shaped clamping plate seat (533). The F-shaped upright plate (531) is vertically fixed to the upper end face of the polygonal frame (521), the longitudinal hydraulic cylinder (532) is vertically fixed to the head of the F-shaped upright plate (531), and the arc-shaped clamping plate seat (533) is fixedly installed at the output end of the longitudinal hydraulic cylinder (532).

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