Process for processing anticorrosion steel pipe

Abstract

The present application relates to a kind of steel pipe processing technical field, specifically relates to a kind of anticorrosive steel pipe processing technology.Process includes the following steps: hoist pipe to support;Pipe on support is moved along the length direction of pipe by support, and pipe on support is located at design position;Pipe is rotated by support;Install spray head on the telescopic rod of electric push rod, start electric push rod, and make spray head move along the axial direction of pipe;At the same time, make anticorrosive coating be sprayed from spray head and adhere to the outer edge of pipe.Pipe on support can move along the axial direction of pipe, ensure that the outer edge of pipe can be all adhered by anticorrosive coating, can improve the quality of anticorrosive processing to pipe.

Description

Technical Field

[0001] This invention relates to the field of steel pipe processing technology, specifically to a process for processing anti-corrosion steel pipes. Background Technology

[0002] During the production of anti-corrosion steel pipes, the pipes undergo anti-corrosion treatment to effectively slow down corrosion caused by chemical or electrochemical reactions during transportation and use. Some anti-corrosion steel pipes have an anti-corrosion coating sprayed onto their surface during this treatment process. Before spraying the coating, the steel pipe is hoisted onto a support, which causes the pipe to rotate. The spray head moves above the pipe along its axial direction to apply the anti-corrosion coating. In this method, the spray head can generally only move along a fixed track along the pipe's axial direction. However, during the hoisting process, the hoisting ropes can easily sway, causing the pipe's actual position on the support to deviate from the designed position. As the spray head moves, the outer edge of the pipe cannot be completely coated with the anti-corrosion coating. Furthermore, when the spray head crosses the pipe along its length, the sprayed coating is wasted as it doesn't adhere to the outer edge.

[0003] During the process of hoisting the pipes onto the supports, the pipes sway, and when the pipes are supported by the supports, the center of gravity of the pipes does not coincide with the center of the supports. This results in uneven stress on both ends of the supports. After long-term use, the supports are prone to tilting, which in turn affects the quality of the anti-corrosion coating sprayed on the pipes. Summary of the Invention

[0004] The technical problem to be solved by this invention is a corrosion-resistant steel pipe processing technology that can improve the quality of corrosion protection processing of pipes. This technology can avoid wasting anti-corrosion coatings, improve work efficiency, and reduce the labor intensity of workers.

[0005] To achieve the above objectives, the technical solution provided by this invention is as follows:

[0006] A process for processing anti-corrosion steel pipes includes the following steps:

[0007] S1. Hoist the pipes onto the support.

[0008] S2. The support allows the pipe on the support to move along the length of the pipe and to position the pipe on the support at the designed position.

[0009] S3. The pipe rotates by means of a support.

[0010] S4. Install the nozzle on the telescopic rod of the electric actuator, start the electric actuator to make the nozzle move along the axial direction of the pipe; at the same time, the anti-corrosion coating is sprayed from the nozzle and adheres to the outer edge of the pipe.

[0011] Specifically, the bracket includes a base, on which multiple mounting plates are slidably connected. A second electrically controlled slide rail is mounted on each mounting plate, and two drive assemblies are mounted on each mounting plate. The two drive assemblies are arranged in a left-right inverted configuration and are slidably connected to the second electrically controlled slide rail. The sliding direction of the drive assemblies is perpendicular to the sliding direction of the mounting plates. Rolling components are respectively mounted on each of the two drive assemblies, supporting the pipe. The two drive assemblies can drive the two rolling components to move in different directions and change the angle between the rolling components and the pipe axis. After the angle between the two rolling components and the pipe axis changes, the two rolling components can cause the pipe to move along its axial direction.

[0012] Specifically, the rolling assembly includes a support frame, a transmission roller rotatably connected to the support frame, a first motor fixed on the support frame, the output shaft of the first motor fixedly connected to the transmission roller, and the outer edge of the transmission roller making point contact with the outer edge of the pipe.

[0013] Specifically, a first electrically controlled slide rail is installed on the base, the first electrically controlled slide rail is perpendicular to the second electrically controlled slide rail, and the mounting plate is slidably connected to the first electrically controlled slide rail.

[0014] Specifically, the drive assembly includes a mounting base, which is slidably connected to the second electrically controlled slide rail. An arc-shaped groove is provided on the upper part of the mounting base, and an arc-shaped slider is slidably engaged in the arc-shaped groove. The lower end of the support frame is fixedly connected to the arc-shaped slider. The mounting base is provided with a driver that can drive the arc-shaped slider to slide in the arc-shaped groove.

[0015] Specifically, the driver includes a hydraulic cylinder, an arc-shaped through groove is provided on one side of the mounting base, the arc-shaped through groove is connected to an arc-shaped sliding groove, a fixed shaft is fixed on the arc-shaped slider, the fixed shaft passes through the arc-shaped through groove, one end of the hydraulic cylinder is rotatably connected to the mounting base, and the other end of the hydraulic cylinder is rotatably connected to the fixed shaft.

[0016] Specifically, the drive assembly includes a support, which is slidably connected to a second electrically controlled slide rail on the mounting plate. A second motor is fixed on the support and is inclined. The support frame is fixedly connected to the output shaft of the second motor. The two drive assemblies on the mounting plate are symmetrically arranged front and back.

[0017] Specifically, the length of the line connecting the two drive roller shafts is equal to the length of the line connecting the drive roller shaft and the tube shaft.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] 1. The pipes on the support can move along the axial direction of the pipe, ensuring that the outer edge of the pipe can be completely coated with anti-corrosion paint, thus improving the quality of the anti-corrosion processing. At the same time, it ensures that the center of the support coincides with the center of gravity of the pipe supported by the support, so that the force is evenly distributed at both ends of the support, preventing the support from tilting and ensuring the quality of the anti-corrosion paint sprayed on the pipe.

[0020] 2. By changing the angle between the rolling assembly and the pipe axis, the pipe can move along its axial direction, which can reduce the labor intensity of workers and ensure that the pipe is in the designed position on the support before being sprayed.

[0021] 3. The overall structure of the support frame is simple and the equipment investment cost is low. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of Embodiment 1.

[0023] Figure 2 This is a schematic diagram of the cooperation between the driving component and the scrolling component in Embodiment 1.

[0024] Figure 3 This is a schematic diagram showing the pipe moving to the right using the method in Example 1.

[0025] Figure 4 This is a schematic diagram of Example 2.

[0026] Figure 5 This is a schematic diagram of the cooperation between the driving component and the rolling component in Embodiment 2.

[0027] Figure 6 This is a schematic diagram showing the pipe moving to the right using the scheme of Embodiment 2.

[0028] Figure 7 This is a schematic diagram of the transmission roller driving the tube to rotate in Example 2.

[0029] Figure 8 This is a schematic diagram showing the increased pipe diameter and its interaction with the front and rear drive rollers in Example 2.

[0030] The names of the components in the attached diagram are:

[0031] 1. Base; 2. First electrically controlled slide rail; 3. Mounting plate; 4. Transmission roller; 5. Second motor; 6. Support frame; 7. First motor; 8. Arc-shaped slider; 9. Mounting seat; 10. Arc-shaped slide groove; 11. Arc-shaped through groove; 12. Fixed shaft; 13. Hydraulic cylinder; 14. Second electrically controlled slide rail; 15. Electric push rod; 16. Nozzle; 17. Pipe; 18. Support. Detailed Implementation

[0032] Example 1:

[0033] like Figure 1 , Figure 2 and Figure 3 As shown, a processing technology for anti-corrosion steel pipes is characterized by the following steps:

[0034] S1. Hoist pipe 17 onto the support.

[0035] S2. The support makes the pipe 17 on the support move along the length of the pipe 17, and the pipe 17 on the support is positioned at the design position.

[0036] S3. The pipe 17 rotates by means of a support.

[0037] S4. Install the nozzle 16 on the telescopic rod of the electric push rod 15, and start the electric push rod 15 to make the nozzle 16 move along the axial direction of the pipe 17. At the same time, the anti-corrosion coating is sprayed from the nozzle 16 and adheres to the outer edge of the pipe 17.

[0038] The bracket includes a base 1, on which multiple mounting plates 3 are slidably connected. A first electrically controlled slide rail 2 is mounted on the base 1, and the mounting plates 3 are slidably connected to the first electrically controlled slide rail 2. A second electrically controlled slide rail 14 is provided on the mounting plate 3, with the first electrically controlled slide rail 2 and the second electrically controlled slide rail 14 perpendicular to each other. Two drive components are provided on the mounting plate 3, and the two drive components are arranged in a left-right inverted manner, with the drive components slidably connected to the second electrically controlled slide rail 14.

[0039] The sliding direction of the drive assembly is perpendicular to the sliding direction of the mounting plate 3. Rolling components are respectively provided on the two drive assemblies, and the rolling components support the pipe 17. The two drive assemblies can drive the two rolling components to move in different directions and change the angle between the rolling components and the axis of the pipe 17. After the angle between the two rolling components and the axis of the pipe 17 changes, the two rolling components can make the pipe 17 move along its axial direction.

[0040] The rolling assembly includes a support frame 6. A transmission roller 4 is rotatably connected to the support frame 6. A first motor 7 is fixed to the support frame 6, and the output shaft of the first motor 7 is fixedly connected to the transmission roller 4. The outer edge of the transmission roller 4 makes point contact with the outer edge of the tube 17.

[0041] The drive assembly includes a mounting base 9, which is slidably connected to the second electrically controlled slide rail 14. An arc-shaped slide groove 10 is provided on the upper part of the mounting base 9, and an arc-shaped slider 8 is slidably engaged in the arc-shaped slide groove 10. The lower end of the support frame 6 is fixedly connected to the arc-shaped slider 8. The mounting base 9 is provided with a driver that can drive the arc-shaped slider 8 to slide in the arc-shaped slide groove 10.

[0042] The actuator includes a hydraulic cylinder 13. An arc-shaped through groove 11 is provided on one open side of the mounting base 9, which communicates with an arc-shaped sliding groove 10. A fixed shaft 12 is fixed on the arc-shaped slider 8, passing through the arc-shaped through groove 11. One end of the hydraulic cylinder 13 is rotatably connected to the mounting base 9, and the other end of the hydraulic cylinder 13 is rotatably connected to the fixed shaft 12.

[0043] Before the support is used, the axis of the drive roller 4 is parallel to the length direction of the base 1. When the drive roller 4 supports the tube 17, the axis of the drive roller 4 is parallel to the axis of the tube 17. At this time, the drive roller 4 is in its initial state.

[0044] The pipe 17 is hoisted onto the support, and the transmission roller 4 on the support supports the pipe 17.

[0045] When it is necessary for the pipe 17 to move along the axial direction of the pipe 17 on the support, the hydraulic cylinders 13 on both the front and rear sides extend. The hydraulic cylinders 13 push the arc-shaped slider 8 to slide in the arc-shaped groove 10 through the fixed shaft 12, thereby causing the transmission roller 4 to move. When the two transmission rollers 4 move, the front and rear transmission rollers 4 move in opposite directions.

[0046] As the hydraulic cylinder 13 moves the transmission roller 4 via the fixed shaft 12 and the support frame 6, the angle between the axis of the transmission roller 4 and the axis of the tube 17 increases.

[0047] Reference Figure 3 As shown, the lower end of the front support frame 6 is moved to the right by the hydraulic cylinder 13, and the lower end of the rear support frame 6 is moved to the left, ensuring that the angle between the axis of the front transmission roller 4 and the axis of the tube 17 is equal to the angle between the axis of the rear transmission roller 4 and the axis of the tube 17. Figure 3 In this process, the first motors 7 on both the front and rear sides drive the transmission rollers 4 on both sides respectively, causing both transmission rollers 4 to rotate clockwise (the front transmission roller 4 rotates in the direction of the arrow marked on it, and the rear transmission roller 4 rotates in the direction of the arrow marked on it). At this time, the tangential force applied by the transmission rollers 4 to the tube 17 has an angle M less than 90 degrees with the axis of the tube 17. Then the tube 17 will move counterclockwise spirally to the right. If the first motors 7 drive both transmission rollers 4 on both sides to rotate counterclockwise, the tube 17 will move clockwise spirally to the left.

[0048] The distance between the two mounting plates 3 can be adjusted according to the length of the pipe 17 via the first electrically controlled slide rail 2. This ensures that the transmission rollers 4 on both the left and right sides of the base 1 can support the pipe 17. The distance between the two drive components can be adjusted via the second electrically controlled slide rail 14, thereby adjusting the distance between the front and rear transmission rollers 4 to facilitate support for pipes 17 of different diameters.

[0049] After the pipe 17 moves on the support, it can ensure that the center of the support coincides with the center of gravity of the pipe 17 supported by the support, so that the force at both ends of the support is even, preventing the support from tilting and ensuring the quality of the anti-corrosion coating sprayed on the pipe 17.

[0050] When the pipe 17 moves to the designed position on the bracket, the transmission rollers 4 on both the left and right sides are returned to their initial state in sequence. Then, the first motor 7 drives the transmission rollers 4 to rotate, which in turn causes the pipe 17 to rotate, activating the electric push rod 15, causing the nozzle 16 to move along the axial direction of the pipe 17. At the same time, the anti-corrosion coating is sprayed from the nozzle 16 and adheres to the outer edge of the pipe 17.

[0051] Example 2:

[0052] like Figure 4-6 As shown, the drive assembly includes a support 18, which is slidably connected to a second electrically controlled slide rail 14 on the mounting plate 3. A second motor 5 is fixed on the support 18, and the second motor 5 is inclined. The support frame 6 is fixedly connected to the output shaft of the second motor 5. The two drive assemblies on the mounting plate 3 are symmetrically arranged front and rear.

[0053] When the axis of the drive roller 4 is parallel to the axis of the tube 17, the length of the line connecting the axes of the two drive rollers 4 is equal to the distance between the axis of any one drive roller 4 and the axis of the tube 17.

[0054] Before the support is used, the axis of the drive roller 4 is parallel to the length direction of the base 1. When the drive roller 4 supports the tube 17, the axis of the drive roller 4 is parallel to the axis of the tube 17. At this time, the drive roller 4 is in its initial state.

[0055] The pipe 17 is hoisted onto the support, and the transmission roller 4 on the support supports the pipe 17.

[0056] When it is necessary for the pipe 17 to move along the axial direction of the pipe 17 on the support, the second motor 5 on the front and rear sides drives the support frame 6 and the transmission roller 4 to rotate, and the support frame 6 on the front and rear sides rotates in opposite directions.

[0057] As the support frame 6 drives the transmission roller 4 to rotate around the axis of the second motor 5, the angle between the axis of the transmission roller 4 and the axis of the tube 17 increases.

[0058] Reference Figure 6As shown, the second motor 5 causes the front end of the front drive roller 4 to deflect to the left, and the rear end of the rear drive roller 4 to deflect to the right. The first motors 7 on both sides drive the front and rear drive rollers 4 respectively, causing both to rotate clockwise (the front drive roller 4 rotates in the direction of the arrow indicated on it, and the rear drive roller 4 rotates in the direction of the arrow indicated on it). At this time, the tangential force applied by the drive roller 4 to the tube 17 has an angle N less than 90 degrees with the axis of the tube 17. Therefore, the tube 17 will move counterclockwise spirally to the right. If the first motor 7 drives both the front and rear drive rollers 4 to rotate counterclockwise, the tube 17 will move clockwise spirally to the left.

[0059] After the pipe 17 moves on the support, it can ensure that the center of the support coincides with the center of gravity of the pipe 17 supported by the support, so that the force at both ends of the support is even, preventing the support from tilting and ensuring the quality of the anti-corrosion coating sprayed on the pipe 17.

[0060] In this embodiment,

[0061] When the axis of drive roller 4 is parallel to the axis of tube 17, the distance between the axes of the two drive rollers 4 is equal to the distance between the axis of any one drive roller 4 and the axis of tube 17. (Refer to...) Figure 7 As shown, line b, connecting the axis of the front drive roller 4 and the axis of the tube 17, passes through the contact point c between the front drive roller 4 and the tube 17. Line b, connecting the axis of the front drive roller 4 and the axis of the tube 17, coincides with the axis a of the front second motor 5. Line e, connecting the axis of the rear drive roller 4 and the axis of the tube 17, coincides with the axis f of the rear second motor 5. Line b, connecting the axis of the front drive roller 4 and the axis of the tube 17, line d, connecting the axes of the two drive rollers 4, and line e, connecting the axis of the rear drive roller 4 and the axis of the tube 17, form an equilateral triangle.

[0062] Taking the front drive roller 4 as an example, when the second motor 5 on the front side is started, it drives the front support frame 6 and the front drive roller 4 to rotate. When the front drive roller 4 returns to its initial state, the position of the contact point c between the front drive roller 4 and the pipe 17 will not change. That is, the pipe 17 will not move along its axial direction during the process of the front drive roller 4 returning to its initial state. The pipe 17 is always located in the designed position on the support.

[0063] Reference Figure 8As shown, when the diameter of the tube 17 increases while the distance between the front and rear drive rollers 4 does not increase, the line b connecting the axis of the front drive roller 4 and the axis of the tube 17 does not pass through the contact point c between the front drive roller 4 and the tube 17. The line b connecting the axis of the front drive roller 4 and the axis of the tube 17 does not coincide with the axis a of the front second motor 5. The line e connecting the axis of the rear drive roller 4 and the axis of the tube 17 does not coincide with the axis f of the rear second motor 5. The line b connecting the axis of the front drive roller 4 and the axis of the tube 17, the line d connecting the axes of the two drive rollers 4, and the line e connecting the axis of the rear drive roller 4 and the axis of the tube 17 form an isosceles triangle.

[0064] Taking the front drive roller 4 as an example, when the front second motor 5 is started, it drives the front support frame 6 and the front drive roller 4 to rotate. When the front drive roller 4 returns to its initial state, the front support frame 6 and the front drive roller 4 rotate around the axis a of the front second motor 5. The contact point c between the front drive roller 4 and the pipe 17 also rotates around the axis a of the front second motor 5. That is, during the process of the front drive roller 4 returning to its initial state, under the action of friction between the front drive roller 4 and the pipe 17, the pipe 17 will move along its axial direction, thus preventing the pipe 17 from being in the designed position on the support.

[0065] In this embodiment, when the diameter of the pipe 17 changes, the distance between the front and rear transmission rollers 4 needs to be adjusted via the second electrically controlled slide rail 14, so that the length of the line connecting the axes of the two transmission rollers 4 is equal to the length of the line connecting the axis of the transmission roller 4 and the axis of the pipe 17. This ensures that the pipe 17 does not move along its axial direction during the process of the second motor 5 driving the transmission rollers 4 back to their initial state via the support frame 6.

[0066] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A processing technology for anti-corrosion steel pipes, characterized in that, Includes the following steps: S1. Hoist the pipe (17) onto the support; S2. The pipe (17) on the support is moved along the length of the pipe (17) by the support, and the pipe (17) on the support is located at the design position. S3. When the pipe (17) moves to the designed position on the support, the transmission roller (4) in the support is restored to the initial state. During the process of the transmission roller (4) being restored to the initial state, the pipe (17) will not move along its axial direction. The support makes the pipe (17) only rotate. S4. Install the nozzle (16) on the telescopic rod of the electric push rod (15), start the electric push rod (15) so that the nozzle (16) moves along the axial direction of the pipe (17); at the same time, the anti-corrosion coating is sprayed out from the nozzle (16) and adheres to the outer edge of the pipe (17). The bracket includes a base (1), on which multiple mounting plates (3) are slidably connected. A second electrically controlled slide rail (14) is provided on each mounting plate (3). Two drive components are provided on each mounting plate (3), arranged in a left-right inverted configuration. The drive components are slidably connected to the second electrically controlled slide rail (14), and the sliding direction of the drive components is perpendicular to the sliding direction of the mounting plate (3). Rolling components are respectively provided on each of the two drive components, supporting the pipe (17). The two drive components can drive the two rolling components to move in different directions and change the angle between the rolling components and the axis of the pipe (17). After the angle between the two rolling components and the axis of the pipe (17) changes, the two rolling components can... The rolling assembly includes a support frame (6), a transmission roller (4) is rotatably connected to the support frame (6), a first motor (7) is fixed on the support frame (6), the output shaft of the first motor (7) is fixedly connected to the transmission roller (4), and the outer edge of the transmission roller (4) makes point contact with the outer edge of the pipe (17); a first electrically controlled slide rail (2) is installed on the base (1), the first electrically controlled slide rail (2) is perpendicular to the second electrically controlled slide rail (14), and the mounting plate (3) is slidably connected to the first electrically controlled slide rail (2); the length of the line connecting the axes of the two transmission rollers (4) is equal to the length of the line connecting the axis of any one transmission roller (4) and the axis of the pipe (17).

2. The anti-corrosion steel pipe processing technology according to claim 1, characterized in that, The drive assembly includes a mounting base (9), which is slidably connected to the second electrically controlled slide rail (14). An arc-shaped slide groove (10) is provided on the upper part of the mounting base (9), and an arc-shaped slider (8) is slidably engaged in the arc-shaped slide groove (10). The lower end of the support frame (6) is fixedly connected to the arc-shaped slider (8). The mounting base (9) is provided with a driver that can drive the arc-shaped slider (8) to slide in the arc-shaped slide groove (10).

3. The anti-corrosion steel pipe processing technology according to claim 2, characterized in that, The driver includes a hydraulic cylinder (13), and an arc-shaped through groove (11) is provided on one side of the mounting base (9). The arc-shaped through groove (11) is connected to the arc-shaped sliding groove (10). A fixed shaft (12) is fixed on the arc-shaped slider (8). The fixed shaft (12) passes through the arc-shaped through groove (11). One end of the hydraulic cylinder (13) is rotatably connected to the mounting base (9), and the other end of the hydraulic cylinder (13) is rotatably connected to the fixed shaft (12).

4. The anti-corrosion steel pipe processing technology according to claim 1, characterized in that, The drive assembly includes a support (18), which is slidably connected to a second electrically controlled slide rail (14) on the mounting plate (3). A second motor (5) is fixed on the support (18), which is inclined. A support frame (6) is fixedly connected to the output shaft of the second motor (5). The two drive assemblies on the mounting plate (3) are symmetrically arranged front and back.

Images