Auxiliary device for anti-corrosion construction of inner wall of steel pipe

Abstract

The utility model discloses an auxiliary device for anticorrosion construction of the inner wall of a steel pipe, which comprises a carrier roller, the two ends of the carrier roller are coaxially provided with anti-drop baffle sheets, the two ends of the carrier roller are rotatably connected with supporting arms, the outer ends of the supporting arms are provided with pipe wall fixing assemblies, the carrier roller is in transmission connection with a driving assembly, and the driving assembly is provided with a driving shaft. A cable extrusion assembly is arranged above the carrier roller; the device has the beneficial effects that the carrier roller rotates to drive the cable to move towards the outside of the pipeline at a constant speed, so that the pipeline spraying machine connected with the cable also moves towards the outside of the pipeline at a constant speed, and meanwhile, anticorrosive paint is uniformly sprayed on the inner wall of the pipeline, so that the quality of an inner anticorrosive coating is improved; and the construction period is shortened, and meanwhile, the working intensity of field operating personnel is also reduced.

Description

Technical Field

[0001] The utility model belongs to the field of pipeline construction, and in particular relates to an auxiliary device for anti-corrosion construction of the inner wall of a steel pipe. Background Art

[0002] Pipeline laying and subsequent inspection and maintenance are important construction projects in the process of municipal water conservancy transportation construction. During the operation of the pipeline, the inner wall of the pipeline is exposed to the conveying medium for a long time, causing oxidation and rust on the inner wall of the pipeline, which in turn causes perforation, burst or leakage accidents, resulting in production stoppage, environmental pollution and other problems.

[0003] When a perforation and leakage accident occurs in a pipeline, the line must first be stopped, and then the pipeline at the accident point must be dug up and the perforation and leakage point must be repaired and welded. After the welding point is polished, the existing equipment pipeline sprayer is used to spray the repaired welding point and the oxidized and rusted inner wall with a secondary anti-corrosion coating. When the existing equipment pipeline sprayer is used, the pipeline sprayer placed in the pipeline needs to hold the multiple cables connected to the pipeline sprayer (mainly including sprayer power supply cable, sprayer control cable, paint delivery pipe, etc.) to gradually pull it out of the pipeline when exiting the pipeline. Due to the uneven force of manual pulling of the cables, the travel speed of the pipeline sprayer when exiting the pipeline is uneven, sometimes fast and sometimes slow, resulting in uneven spraying of the anti-corrosion coating on the inner wall of the pipeline by the pipeline sprayer, and even leaking parts, resulting in failure of the quality inspection of the internal anti-corrosion coating, which increases the construction period. In addition, the process of pulling the cables will also increase the work intensity of the on-site operators and reduce work efficiency. Summary of the invention

[0004] The purpose of the utility model is to provide an auxiliary device for anti-corrosion construction of the inner wall of a steel pipe, and overcome the shortcomings of the above-mentioned prior art, which effectively solves the existing problem of uneven anti-corrosion spraying on the inner wall of the steel pipe.

[0005] The content of the utility model: An auxiliary device for anti-corrosion construction of the inner wall of a steel pipe, including rollers, anti-slip baffles are coaxially installed at both ends of the rollers, support arms are rotatably connected at both ends of the rollers, a pipe wall fixing assembly is arranged at the outer end of the support arm, the rollers are transmission-connected to a driving assembly, and a cable extrusion assembly is arranged above the rollers.

[0006] Furthermore, the pipe wall fixing assembly includes a U-shaped slot, the inner side of the U-shaped slot is fixedly connected to the outer end of the support arm, a screw hole is opened on the outer side of the U-shaped slot, a bolt is threaded in the screw hole, and a rubber clip is rotatably connected to the inner end of the bolt. The pipe wall fixing assembly is used to fix the support arm to the outer edge of the cross-section of the pipe.

[0007] Furthermore, the driving assembly includes a driving motor, which is fixedly mounted on a support plate. Hangers are installed at both ends of the support plate. The top of the hanger is fixedly connected to the outer wall of the support arm. The driving motor and the roller are driven by a chain, and the driving motor is located directly below the roller.

[0008] Furthermore, the hanger is triangular in shape.

[0009] Furthermore, the cable extrusion assembly includes a rotating drum, which is rotatably mounted on a round rod, and through holes are vertically opened at both ends of the round rod. A vertical rod is slidably connected in the through holes, and the top of the vertical rod is fixedly connected to an inverted L-shaped support column, and the bottom end of the inverted L-shaped support column is fixedly connected to the outer wall of the support arm. A spring is mounted on the vertical rod, and the spring is located between the round rod and the inverted L-shaped support column. An anti-drop cap is installed at the bottom end of the vertical rod.

[0010] Furthermore, cards are provided at both ends of the rotating drum, and the cards are fixedly sleeved on the round rod.

[0011] Furthermore, anti-slip grooves are provided on the outer circumferential surface of the rotating drum.

[0012] Furthermore, the support roller is a rubber roller.

[0013] The beneficial effects of the utility model are as follows: the cable is driven to move out of the pipeline at a uniform speed by the rotation of the roller, so that the pipeline sprayer connected to the cable also moves out of the pipeline at a uniform speed. At the same time, the anti-corrosion coating is evenly sprayed on the inner wall of the pipeline, thereby improving the quality of the inner anti-corrosion coating, shortening the construction period and reducing the workload of on-site workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is the front view of the utility model;

[0015] Figure 2 for Figure 1 Section view of the AA section;

[0016] Figure 3 for Figure 1 A partial enlarged view of part B;

[0017] Figure 4 This is a structural view of the roller and the support arm in the utility model;

[0018] Figure 5 This is a diagram of the use state of the utility model;

[0019] In the figure, 1 is a roller, 2 is an anti-dropping baffle, 3 is a support arm, 4 is a U-shaped slot, 5 is a bolt, 6 is a rubber clip, 7 is a pipe, 8 is a driving motor, 9 is a support plate, 10 is a hanger, 11 is a rotating drum, 12 is a round rod, 13 is a through hole, 14 is a vertical rod, 15 is an inverted L-shaped support column, 16 is a spring, 17 is an anti-dropping cap, 18 is a card, 19 is a cable, and 20 is a pipe sprayer. DETAILED DESCRIPTION

[0020] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation of the present invention is now described with reference to the accompanying drawings:

[0021] like Figures 1 to 5 As shown, an auxiliary device for anti-corrosion construction of the inner wall of a steel pipe comprises a roller 1, at both ends of which anti-slip baffles 2 are coaxially installed, at both ends of the roller 1 are rotatably connected with support arms 3, at the outer end of the support arm 3 is provided with a pipe wall fixing assembly, the roller 1 is transmission-connected with a drive assembly, and above the roller 1 is provided with a cable extrusion assembly; the pipe wall fixing assembly comprises a U-shaped groove 4, the inner side of the U-shaped groove 4 is fixedly connected to the outer end of the support arm 3, a screw hole is provided on the outer side of the U-shaped groove 4, a bolt 5 is screwed in the screw hole, a rubber clip 6 is rotatably connected to the inner end of the bolt 5, and the pipe wall fixing assembly is used to fix the support arm 3 to the outer edge of the cross section of the pipe 7; the drive assembly comprises a drive motor 8, and the drive motor 8 is fixedly mounted on the support arm 3. On the support plate 9, hangers 10 are installed at both ends of the support plate 9, the top of the hanger 10 is fixedly connected to the outer wall of the support arm 3, the drive motor 8 and the roller 1 are driven by a chain, and the drive motor 8 is located directly below the roller 1; the cable extrusion assembly includes a drum 11, and the drum 11 is rotatably mounted on a round rod 12, and through holes 13 are vertically opened at both ends of the round rod 12, and a vertical pole 14 is slidably connected in the through hole 13, the top of the vertical pole 14 is fixedly connected to an inverted L-shaped support column 15, and the bottom end of the inverted L-shaped support column 15 is fixedly connected to the outer wall of the support arm 3, a spring 16 is mounted on the vertical pole 14, and the spring 16 is located between the round rod 12 and the inverted L-shaped support column 15, and an anti-drop cap 17 is installed at the bottom end of the vertical pole 14.

[0022] Specifically, the cable 19 is driven to move out of the pipe 7 at a uniform speed by the rotation of the roller 1, so that the pipe sprayer 20 connected to the cable 19 also moves out of the pipe 7 at a uniform speed, so that the pipe sprayer 20 can evenly spray the anti-corrosion coating on the inner wall of the pipe 7 when moving.

[0023] In actual use, it is first necessary to have a brief understanding of the use of the existing equipment pipeline sprayer. When using the auxiliary tool, first place the pipeline sprayer 20 in the pipeline 7. At this time, the U-shaped slot 4 installed at the outer end of the two-section support arm 3 is clamped on the outer edge of the cross section of the pipeline 7. The bolt 5 is rotated to further clamp the rubber clip 6 and the outer arm of the pipeline 7. In this way, the auxiliary tool placed horizontally at the pipe mouth of the pipeline 7 can be firmly fixed. At this time, the rotating drum 11 is pulled up horizontally to increase the gap between the rotating drum 11 and the roller 1. At this time, multiple cables 19 are passed through the gap and placed on the roller 1. When the rotating drum 11 is released, the elastic force of the spring 16 makes the circular The rod 12 moves downward on the vertical rod 14 through the through hole 13. At this time, the round rod 12 moves downward to drive the rotating drum 11 to squeeze the cable 19, so that the roller 1 and the rotating drum 11 clamp the cable 19. At this time, the outer end of the cable 19 is connected to the control device external to the pipeline sprayer, and the control device is started. The pipeline sprayer 20 starts to spray the anti-corrosion paint on the inner wall of the pipeline 7. At this time, the drive motor 8 is started again to drive the roller 1 to rotate. The rotating roller 1 gradually pulls the clamped cable 19 outward at a uniform speed. At this time, the pipeline sprayer 20 connected to the cable 19 also moves outward of the pipeline 7 at a uniform speed, and sprays the anti-corrosion paint evenly on the inner wall of the pipeline.

[0024] like Figures 1 to 5 As shown, the hanger 10 is triangular in shape, and cards 18 are provided at both ends of the rotating drum 11. The cards 18 are fixedly mounted on the round rod 12, and anti-slip grooves are provided on the outer circumference of the rotating drum 11; the roller 1 is a rubber roller.

[0025] Specifically, the triangular-shaped hanger 10 makes the operation of the driving motor 8 more stable.

[0026] During actual use, the triangular-shaped hanger 10 makes the operation of the driving motor 8 more stable, so that the overall stability of the auxiliary device is improved during use; the card 18 can further limit the center of the rotating drum 11 on the round rod 12; the anti-slip grooves on the outer circumference of the rotating drum 11 can increase the friction with the cable 7, and the actively rotating rubber roller 1 can avoid damage to the outer skin of the cable 7.

[0027] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An auxiliary device for anti-corrosion construction of the inner wall of a steel pipe, characterized in that: The invention comprises a roller (1), anti-slip baffles (2) are coaxially mounted at both ends of the roller (1), support arms (3) are rotatably connected at both ends of the roller (1), a pipe wall fixing assembly is arranged at the outer end of the support arm (3), the roller (1) is transmission-connected to a driving assembly, and a cable extrusion assembly is arranged above the roller (1).

2. The auxiliary device for anti-corrosion construction of the inner wall of a steel pipe according to claim 1, characterized in that: The pipe wall fixing assembly comprises a U-shaped slot (4), the inner side of the U-shaped slot (4) being fixedly connected to the outer end of the support arm (3), a screw hole being provided on the outer side of the U-shaped slot (4), a bolt (5) being screwed into the screw hole, a rubber clip (6) being rotatably connected to the inner end of the bolt (5), and the pipe wall fixing assembly is used to fix the support arm (3) to the outer edge of the cross section of the pipe (7).

3. The auxiliary device for anti-corrosion construction of the inner wall of a steel pipe according to claim 1, characterized in that: The driving assembly comprises a driving motor (8), wherein the driving motor (8) is fixedly mounted on a support plate (9), hangers (10) are mounted on both ends of the support plate (9), the top end of the hanger (10) is fixedly connected to the outer wall of the support arm (3), the driving motor (8) and the roller (1) are driven by a chain, and the driving motor (8) is located directly below the roller (1).

4. The auxiliary device for anti-corrosion construction of the inner wall of a steel pipe according to claim 3, characterized in that: The hanger (10) is in a triangular shape.

5. The auxiliary device for anti-corrosion construction of the inner wall of a steel pipe according to claim 1, characterized in that: The cable extrusion assembly comprises a rotating drum (11), wherein the rotating drum (11) is rotatably mounted on a round rod (12), through holes (13) are vertically opened at both ends of the round rod (12), a vertical rod (14) is slidably connected in the through hole (13), the top end of the vertical rod (14) is fixedly connected to an inverted L-shaped support column (15), the bottom end of the inverted L-shaped support column (15) is fixedly connected to the outer wall of the support arm (3), a spring (16) is mounted on the vertical rod (14), the spring (16) is located between the round rod (12) and the inverted L-shaped support column (15), and an anti-drop cap (17) is installed at the bottom end of the vertical rod (14).

6. The auxiliary device for anti-corrosion construction of the inner wall of a steel pipe according to claim 5, characterized in that: Cards (18) are provided at both ends of the rotating drum (11), and the cards (18) are fixedly sleeved on the round rod (12).

7. The auxiliary device for anti-corrosion construction of the inner wall of a steel pipe according to claim 5, characterized in that: Anti-slip grooves are provided on the outer circumferential surface of the rotating drum (11).

8. The auxiliary device for anti-corrosion construction of the inner wall of a steel pipe according to claim 1, characterized in that: The support roller (1) is a rubber roller.

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