Construction pipeline outer surface rust removal device

Abstract

The application discloses a construction pipeline outer surface rust removal device, a scraper is arranged on the end of the moving plate of the inner wall of the guide ring, a sliding rod is arranged on the other end of the moving plate, the sliding rod is slidingly connected to a supporting ring, a first rotating ring and a second rotating ring are rotatably connected to the two ends of the supporting ring, a pressing head is arranged on the first rotating ring, a jacking head is arranged on the second rotating ring, the pressing head and the jacking head are respectively overlapped on the horizontal seat of the sliding rod, a transmission mechanism is arranged on the supporting ring, the transmission mechanism is connected to the corresponding first rotating ring and second rotating ring, the pipeline is placed on the machine tool before rust removal, then the pipeline is horizontally moved to the position of the guide ring, then the first rotating ring and the second rotating ring are rotated under the drive of the servo motor, the first rotating ring drives the scraper to move to the position of the pipeline, the scraper is overlapped on the pipeline, and the pipeline is scraped by the scraper when being horizontally moved, so that efficient rust removal is realized.

Description

Technical Field

[0001] This application relates to the field of pipeline rust removal technology, and in particular to a rust removal device for the outer surface of construction pipelines. Background Technology

[0002] Pipelines are devices made up of pipes, pipe fittings, valves, etc., used to transport gases, liquids, or fluids containing solid particles. They are widely used in building construction, water and electricity projects, and daily life.

[0003] Pipes that cannot be used immediately during construction are often placed outdoors. These outdoor pipes are easily exposed to rain, which causes rust to form on their material. Rust removal can be done manually, a traditional method suitable for small, scattered areas of corrosion. This method involves gently tapping the pipe with a hammer to loosen the rust layer, then wiping the surface with a wire brush, wire cloth, or coarse sandpaper until the original color of the pipe is revealed. This method is simple and easy, but not suitable for large areas. Alternatively, manual rust removal can be achieved using handheld tools. Before application, the rust on the outer wall of the pipe needs to be ground off. Workers use handheld grinders to polish the pipe's outer wall, but manual grinding is inefficient, affecting pipe usability and increasing labor intensity. Summary of the Invention

[0004] One of the purposes of this application is to provide a rust removal device for the outer surface of construction pipelines.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows: a rust removal device for the outer surface of a construction pipeline, including a machine tool. A guide ring is provided on the machine tool, and a movable plate is slidably connected to the side edge of the guide ring. A scraper is provided at the end of the movable plate on the inner wall of the guide ring. When the pipeline moves horizontally, it is scraped off by the scraper. A sliding rod is provided at the other end of the movable plate, and the sliding rod is slidably connected to a support ring. A first rotating ring and a second rotating ring are rotatably connected to both ends of the support ring, and a downward pressure head is provided on the first rotating ring. The second rotating ring is provided with an upper top head. The lower pressure head and the upper top head are respectively attached to the cross seat of the slide rod. The support ring is provided with a transmission mechanism, which is respectively connected to the corresponding first rotating ring and second rotating ring. The lower pressure head is provided on the inner wall of the first rotating ring, and the upper top head is provided on the outer wall of the second rotating ring. The lower pressure head and the upper top head are both triangularly arranged. A cross seat is provided on the side edge of the slide rod corresponding to the lower pressure head, and a cross seat is provided on the side edge of the slide rod corresponding to the upper top head. The cross seats on both sides of the slide rod are arranged alternately.

[0006] Preferably, the diameter of the support ring is larger than the diameter of the guide ring, the support ring is located at the outer center of the guide ring, the support ring is fixedly connected to the guide ring, the diameter of the support ring is smaller than the diameter of the first rotating ring and the second rotating ring, the diameter of the first rotating ring is larger than the diameter of the second rotating ring, and the first rotating ring and the second rotating ring are coaxially arranged.

[0007] Preferably, the guide ring has an opening on its side edge, and a rotating seat is rotatably connected inside the opening. The rotating seat has a sliding groove, and a movable plate is slidably connected inside the sliding groove. The movable plate passes through the sliding groove, and the movable plate is rectangular in shape. The scraper connected to the movable plate is arc-shaped.

[0008] Preferably, the movable plate and the slide rod are arranged in a T-shape, the slide rod is slidably connected to the corresponding support ring, the slide rod passes through the support ring, and each of the slide rod's cross seats is provided with a rotating wheel. The rotating wheels on the cross seats are respectively connected to the corresponding lower pressure head and upper top head, and the rotating wheels are horizontally arranged with the cross seats.

[0009] Preferably, a first spring is sleeved on the slide rod, the first spring is located between the support ring and the movable plate, one end of the first spring is detachably connected to the inner wall of the support ring, and the other end of the first spring is detachably connected to the movable plate.

[0010] Preferably, a support rod is provided at both ends of the guide ring, and an outer ring is provided on the support rod. The diameter of the outer ring is smaller than the diameter of the guide ring, and a support frame is provided on the machine tool corresponding to the outer ring.

[0011] Preferably, the machine tool is provided with a base frame, the base frame is T-shaped, one end of the base frame is connected to a guide ring, and side wheels are provided at both ends of the guide ring.

[0012] Preferably, the transmission mechanism includes a servo motor mounted on a base frame. The output end of the servo motor is provided with a first gear. The outer wall of the second rotating ring corresponding to the first gear is provided with teeth. The first gear meshes with the corresponding teeth. A second gear is provided coaxially with the first gear. One end of the second gear is rotatably connected to a fixed plate. The fixed plate is mounted on the outer wall of the support ring. A fourth gear is meshed with one side of the second gear on the fixed plate. A third gear is coaxially provided with the fourth gear. The third gear meshes with the teeth on the outer wall of the first rotating ring.

[0013] Preferably, the teeth of the first rotating ring are disposed between the two lower pressure heads, the teeth of the second rotating ring are disposed between the two upper pressure heads, and the rotation direction of the third gear is opposite to that of the first gear.

[0014] Compared with the prior art, the beneficial effects of this application are as follows:

[0015] This rust removal device for the outer surface of construction pipelines works by placing the construction pipeline on the machine tool frame before rust removal. The pipeline is then pushed into the outer ring of a guide ring. As the pipeline passes through the outer ring, it is guided and limited, allowing it to move inwards. During rust removal, a servo motor is activated, driving the first gear to rotate. This rotation of the first gear drives the second rotating ring, which in turn moves the upper head away from the cross seat. The first gear then drives the second gear, which in turn drives the fourth gear, which in turn drives the third gear, which in turn drives the first rotating ring. Since the first and second rotating rings rotate in opposite directions, the second rotating ring drives the lower pressure head to press down on the cross seat. As the cross seat is pressed down, the sliding rod moves downwards, causing the scraper to move towards the outer wall of the pipeline, thus overlapping with the pipeline. During this movement, the pipeline is scraped by the scraper, removing the rust. The scraper overlaps the entire pipeline during rust removal, maximizing the rust removal area and improving efficiency.

[0016] This rust removal device for the outer surface of the construction pipeline uses a support ring on the guide ring to limit the sliding rod. When the sliding rod extends and retracts along the support ring, its position remains fixed, ensuring the scraper on the sliding rod accurately engages with the outer wall of the pipeline without deviation. The sliding rod has staggered horizontal seats on its side edge, each corresponding to a first rotating ring and a second rotating ring. When the first rotating ring rotates, it moves the lower pressure head closer to or away from the horizontal seat. When the second rotating ring rotates, it moves the upper pressure head closer to or away from the horizontal seat. When the first rotating ring presses down on the horizontal seat, the sliding rod allows the scraper to engage with the outer wall of the pipeline. At this point, the second rotating ring moves the upper pressure head away from the horizontal seat. When the first rotating ring moves the lower pressure head away from the horizontal seat, the upper pressure head of the second rotating ring moves towards the horizontal seat, pushing it upwards. This allows the sliding rod to move the scraper away from the pipeline, enabling scraper retraction for the next rust removal cycle. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 .

[0018] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 .

[0019] Figure 3 This is a schematic diagram of the side wheel structure in this invention.

[0020] Figure 4 This is a schematic diagram of the support rod in this invention.

[0021] Figure 5This is a magnified schematic diagram of region A in this invention.

[0022] Figure 6 This is a schematic diagram of the enlarged structure of region B in this invention.

[0023] Figure 7 This is a schematic diagram of the enlarged structure of region C in this invention.

[0024] In the diagram: 1. Machine tool; 2. Base frame; 3. Frame; 4. Guide ring; 5. Outer ring; 6. Support ring; 7. First rotating ring; 8. Second rotating ring; 9. Opening; 10. Transmission mechanism; 101. Servo motor; 102. Gear; 103. First gear; 104. Fixed plate; 105. Second gear; 106. Third gear; 107. Fourth gear; 11. Side wheel; 12. Moving plate; 13. First spring; 14. Lower pressure head; 15. Slide rod; 16. Cross seat; 17. Rotary wheel; 18. Upper top head; 19. Scraper; 20. Support rod; 21. Slide groove; 22. Rotating seat. Detailed Implementation

[0025] The present application will be further described below with reference to specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0026] In the description of this application, it should be noted that the terms "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., which indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and should not be construed as limiting the specific protection scope of this application.

[0027] It should be noted that the terms "first," "second," etc., in the specification and claims of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0028] like Figures 1 to 7As shown, the rust removal device for the outer surface of construction pipelines provided by the present invention includes a machine tool 1. A guide ring 4 is provided on the machine tool 1. A movable plate 12 is slidably connected to the side edge of the guide ring 4. A scraper 19 is provided at the end of the movable plate 12 on the inner wall of the guide ring 4. When the pipeline moves horizontally, it is scraped off by the scraper 19. A slide rod 15 is provided at the other end of the movable plate 12. The slide rod 15 is slidably connected to a support ring 6. A first rotating ring 7 and a second rotating ring 8 are rotatably connected to both ends of the support ring 6. A lower pressure head 14 is provided on the first rotating ring 7. An upper top head 18 is provided on the second rotating ring 8. The lower pressure head 14 and the upper top head 18 are respectively attached to the cross seat 16 of the slide rod 15. A transmission mechanism 10 is provided on the support ring 6. The transmission mechanism 10 is respectively connected to the corresponding first rotating ring 7 and second rotating ring 8. The lower pressure head 14 is provided on the inner wall of the first rotating ring 7. The upper top head 18 is provided on the outer wall of the second rotating ring 8. Both the upper and lower heads 14 and the upper head 18 are triangularly arranged. The lower head 14 has a horizontal seat 16 on the side edge of the slide rod 15, and the upper head 18 has a horizontal seat 16 on the side edge of the slide rod 15. The horizontal seats 16 on both sides of the slide rod 15 are staggered. Before rust removal of the pipe, the pipe needs to be placed on the machine tool 1. Then the pipe is moved horizontally to the guide ring 4. Then the servo motor 101 drives the first rotating ring 7 and the second rotating ring 8 to rotate. The first rotating ring 7 will drive the scraper 19 to move towards the pipe position. The scraper 19 can then be attached to the pipe. When the pipe moves horizontally, it will be scraped by the scraper 19, thereby achieving efficient rust removal. By setting the horizontal seat 16 on the slide rod 15, the horizontal seat 16 can be attached to the lower head 14 of the first rotating ring 7 and the upper head 18 of the second rotating ring 8. The lower head 14 can push down the horizontal seat 16, and the upper head 18 can push up the horizontal seat 16, thereby realizing the extension and retraction of the slide rod 15, thereby realizing the movement of the scraper 19.

[0029] The diameter of the support ring 6 is larger than the diameter of the guide ring 4. The support ring 6 is located at the outer center of the guide ring 4 and is fixedly connected to the guide ring 4. The diameter of the support ring 6 is smaller than the diameter of the first rotating ring 7 and the second rotating ring 8. The diameter of the first rotating ring 7 is larger than the diameter of the second rotating ring 8. The first rotating ring 7 and the second rotating ring 8 are coaxially arranged. By setting the support ring 6, the slide rod 15 can be limited. The slide rod 15 can extend and retract under the limitation of the support ring 6, and the slide rod 15 will not cause the scraper 19 to shift position.

[0030] During implementation, before rust removal, the construction pipe is placed on the frame 3 of the machine tool 1. Then, the pipe is pushed into the outer ring 5 of the guide ring 4. When the pipe passes through the outer ring 5, it is limited and guided, allowing it to move inside the guide ring 4. During rust removal, the servo motor 101 is activated, which drives the first gear 103 to rotate. When the first gear 103 rotates, it drives the second rotating ring 8 to rotate. When the second rotating ring 8 rotates, the upper top head 18 moves away from the cross seat 16. The rotation of the first gear 103 drives the second gear 105, and the rotation of the second gear 105 drives the fourth gear 107 to rotate. When the fourth gear 107 rotates, it drives the third gear 106 to rotate. When the third gear 106 rotates, it drives the first rotating ring 7 to rotate. The rotation directions of the first rotating ring 7 and the second rotating ring 8 are different. The second rotating ring 8 drives the lower pressure head 14 to press down on the horizontal seat 16. When the horizontal seat 16 is pressed down, the sliding rod 15 moves down. The sliding rod 15 drives the scraper 19 to move towards the outer wall of the pipe, thus overlapping on the pipe. During the movement of the pipe, it will be scraped by the scraper 19, thus scraping off the rust. During rust removal, the scraper 19 will overlap around the pipe, thereby maximizing the rust removal area and improving the rust removal efficiency.

[0031] like Figures 1 to 7 As shown, the rust removal device for the outer surface of the construction pipeline provided by the present invention has an opening 9 on the side edge of the guide ring 4. A rotating seat 22 is rotatably connected inside the opening 9. A sliding groove 21 is provided on the rotating seat 22. A movable plate 12 is slidably connected inside the sliding groove 21. The movable plate 12 is set through the sliding groove 21. The movable plate 12 is rectangular in shape. The scraper 19 connected to the movable plate 12 is arc-shaped. The rotating seat 22 can be installed through the opening 9. The movable plate 12 can be installed in the sliding groove 21 of the rotating seat 22 and can slide on the rotating seat 22, thereby realizing the movement of the movable plate 12. The movable plate 12 and the sliding rod 15 are T-shaped in shape. The sliding rod 15 is slidably connected to the corresponding support ring 6 and passes through the support ring 6. The slide rod 15 is equipped with a rotating wheel 17 on each of its horizontal seats 16. The rotating wheels 17 on the horizontal seats 16 are respectively connected to the corresponding lower pressure head 14 and upper pressure head 18. The rotating wheels 17 and the horizontal seats 16 are horizontally arranged. The connection between the rotating wheels 17 and the upper pressure head 18 and the lower pressure head 14 can reduce the friction during movement. A first spring 13 is sleeved on the slide rod 15. The first spring 13 is located between the support ring 6 and the moving plate 12. One end of the first spring 13 is detached and connected to the inner wall of the support ring 6, and the other end of the first spring 13 is detached and connected to the moving plate 12. The first spring 13 can push the moving plate 12, so that the moving plate 12 can quickly move into the guide ring 4, thereby causing the moving plate 12 to drive the scraper 19 to move quickly to the pipeline position.

[0032] As an optional solution, in this embodiment of the invention, support rods 20 are provided at both ends of the guide ring 4, and outer rings 5 ​​are provided on the support rods 20. The diameter of the outer rings 5 ​​is smaller than that of the guide ring 4. A frame 3 is provided on the machine tool 1 corresponding to the outer rings 5, and the pipe can be placed through the frame 3. A base frame 2 is provided on the machine tool 1. The base frame 2 is T-shaped. One end of the base frame 2 is connected to the guide ring 4. Side wheels 11 are provided at both ends of the guide ring 4, and the pipe can be driven through the side wheels 11. The transmission mechanism 10 includes a servo motor 101, which is mounted on the base frame 2. A first gear 103 is provided at the output end of the servo motor 101. Teeth 102 are provided on the outer wall of the second rotating ring 8 corresponding to the first gear 103. The first gear 103 meshes with the corresponding teeth 102. A second gear 105 is provided coaxially with the first gear 103. One end of the second gear 105 is rotatably connected to the fixed plate 104. 04 is set on the outer wall of the support ring 6. The second gear 105 of the fixing plate 104 is meshed with the fourth gear 107 on one side. The third gear 106 is coaxially set with the fourth gear 107. The third gear 106 is meshed with the teeth 102 on the outer wall of the first rotating ring 7. The servo motor 101 drives the first gear 103 to rotate. The first gear 103 will realize transmission through meshing with the teeth 102, and the second rotating ring 8 can rotate. The first gear 103 drives the second gear 105, the second gear 105 drives the fourth gear 107 to rotate, and the third gear 106 coaxial with the second gear 105 can drive the first rotating ring 7 to rotate. The teeth 102 of the first rotating ring 7 are set between the two lower pressure heads 14, and the teeth 102 of the second rotating ring 8 are set between the two upper top heads 18. The rotation direction of the third gear 106 is opposite to that of the first gear 103. The meshing transmission can be realized through the setting of the teeth 102, thereby realizing the rotation of the first rotating ring 7 and the second rotating ring 8.

[0033] In implementation, by setting a support ring 6 on the guide ring 4, the support ring 6 can limit the sliding rod 15. When the sliding rod 15 extends and retracts along the support ring 6, the position of the sliding rod 15 will not shift, and the scraper 19 on the sliding rod 15 will accurately overlap the outer wall of the pipe, thus preventing shifting. The side edge of the sliding rod 15 is provided with staggered horizontal seats 16, each horizontal seat 16 corresponding to the first rotating ring 7 and the second rotating ring 8 respectively. When the first rotating ring 7 rotates, it will drive the lower pressure head 14 to move closer to or away from the horizontal seat 16. When the second rotating ring 8 rotates, it will also drive... When the upper top head 18 moves away from or near the horizontal seat 16, and the first rotating ring 7 drives the lower pressure head 14 to press down on the horizontal seat 16, the sliding rod 15 can drive the scraper 19 to overlap on the outer wall of the pipe. At this time, the second rotating ring 8 will drive the upper top head 18 away from the horizontal seat 16. When the first rotating ring 7 drives the lower pressure head 14 away from the horizontal seat 16, the upper top head 18 of the second rotating ring 8 will move towards the horizontal seat 16, thereby pushing the horizontal seat 16 upward. The sliding rod 15 can then drive the scraper 19 away from the pipe, thereby realizing the recovery of the scraper 19, and thus enabling the next rust removal extension.

[0034] The working principle of this invention is as follows: Before rust removal, the construction pipe is placed on the frame 3 of the machine tool 1. Then, by pushing the pipe, it enters the outer ring 5 of the guide ring 4. When the pipe passes through the outer ring 5, it is limited and guided, allowing it to move inside the guide ring 4. During rust removal, the servo motor 101 is activated, which drives the first gear 103 to rotate. When the first gear 103 rotates, it drives the second rotating ring 8 to rotate. When the second rotating ring 8 rotates, the upper top head 18 moves away from the cross seat 16. When the first gear 103 rotates, it drives the second gear 105, and when the second gear 105 rotates, it drives the fourth gear 10. When gear 7 rotates, the fourth gear 107 rotates, which in turn drives the third gear 106 to rotate. When the third gear 106 rotates, it drives the first rotating ring 7 to rotate. The rotation directions of the first rotating ring 7 and the second rotating ring 8 will be different. The second rotating ring 8 will drive the lower pressure head 14 to press down on the horizontal seat 16. When the horizontal seat 16 is pressed down, the sliding rod 15 will move down. The sliding rod 15 will drive the scraper 19 to move towards the outer wall of the pipe, thus overlapping with the pipe. During the movement of the pipe, it will be scraped by the scraper 19, thus scraping off the rust. During rust removal, the scraper 19 will overlap around the pipe, thereby maximizing the rust removal area and improving the rust removal efficiency.

[0035] By setting a support ring 6 on the guide ring 4, the support ring 6 can limit the sliding rod 15. When the sliding rod 15 extends and retracts along the support ring 6, the position of the sliding rod 15 will not shift. The scraper 19 on the sliding rod 15 will accurately overlap the outer wall of the pipe, thus preventing shifting. The side edge of the sliding rod 15 is provided with staggered horizontal seats 16. Each horizontal seat 16 corresponds to the first rotating ring 7 and the second rotating ring 8. When the first rotating ring 7 rotates, it will drive the lower pressure head 14 to move closer to or away from the horizontal seat 16. When the second rotating ring 8 rotates, it will also drive the upper pressure head 14 to move closer to or away from the horizontal seat 16. When the head 18 moves away from or near the horizontal seat 16, and the first rotating ring 7 drives the lower pressing head 14 to press down on the horizontal seat 16, the sliding rod 15 can drive the scraper 19 to overlap on the outer wall of the pipe. At this time, the second rotating ring 8 will drive the upper lifting head 18 away from the horizontal seat 16. When the first rotating ring 7 drives the lower pressing head 14 away from the horizontal seat 16, the upper lifting head 18 of the second rotating ring 8 will move towards the horizontal seat 16, thereby lifting the horizontal seat 16. The sliding rod 15 can drive the scraper 19 away from the pipe, thereby realizing the recovery of the scraper 19, and thus performing the next rust removal extension.

[0036] The basic principles, main features, and advantages of this application have been described above. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this application. Various changes and modifications can be made to this application without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection claimed by this application is defined by the appended claims and their equivalents.

Claims

1. A rust removal device for the outer surface of a construction pipeline, comprising a machine tool (1), characterized in that: The machine tool (1) is provided with a guide ring (4), and a moving plate (12) is slidably connected to the side edge of the guide ring (4). A scraper (19) is provided at the end of the moving plate (12) on the inner wall of the guide ring (4). When the pipe moves horizontally, it is scraped by the scraper (19), thereby scraping off the rust. A slide rod (15) is provided at the other end of the moving plate (12). The slide rod (15) is slidably connected to the support ring (6). The two ends of the support ring (6) are respectively rotatably connected to a first rotating ring (7) and a second rotating ring (8). A lower pressure head (14) is provided on the first rotating ring (7), and an upper top head (18) is provided on the second rotating ring (8). The lower pressure head (14) and the upper top head (18) are connected to each other. The support ring (6) is provided with a transmission mechanism (10) and is connected to the corresponding first rotating ring (7) and second rotating ring (8). The lower pressure head (14) is provided on the inner wall of the first rotating ring (7) and the upper top head (18) is provided on the outer wall of the second rotating ring (8). The lower pressure head (14) and the upper top head (18) are both triangularly arranged. The lower pressure head (14) is provided with a cross seat (16) on the side edge of the slide rod (15) corresponding to the lower pressure head (14) and the upper top head (18) is provided with a cross seat (16) on the side edge of the slide rod (15) corresponding to the upper top head (18). The cross seats (16) on both sides of the slide rod (15) are arranged alternately.

2. The rust removal device for the outer surface of construction pipelines as described in claim 1, characterized in that: The diameter of the support ring (6) is greater than the diameter of the guide ring (4). The support ring (6) is located at the outer center of the guide ring (4). The support ring (6) is fixedly connected to the guide ring (4). The diameter of the support ring (6) is smaller than the diameter of the first rotating ring (7) and the second rotating ring (8). The diameter of the first rotating ring (7) is greater than the diameter of the second rotating ring (8). The first rotating ring (7) and the second rotating ring (8) are coaxially arranged.

3. The rust removal device for the outer surface of construction pipelines as described in claim 1, characterized in that: An opening (9) is provided on the side edge of the guide ring (4). A rotating seat (22) is rotatably connected inside the opening (9). A sliding groove (21) is provided on the rotating seat (22). A moving plate (12) is slidably connected inside the sliding groove (21). The moving plate (12) is arranged through the sliding groove (21). The moving plate (12) is rectangular in shape. The scraper (19) connected to the moving plate (12) is arc-shaped.

4. The rust removal device for the outer surface of construction pipelines as described in claim 3, characterized in that: The movable plate (12) and the slide rod (15) are arranged in a T-shape. The slide rod (15) is slidably connected to the corresponding support ring (6). The slide rod (15) passes through the support ring (6). The slide rod (15) is provided with a rotating wheel (17) on the cross seat (16). The rotating wheel (17) on the cross seat (16) is respectively connected to the corresponding lower pressure head (14) and upper top head (18). The rotating wheel (17) and the cross seat (16) are arranged horizontally.

5. The rust removal device for the outer surface of construction pipelines as described in claim 4, characterized in that: The slide bar (15) is fitted with a first spring (13), which is located between the support ring (6) and the moving plate (12). One end of the first spring (13) is detached and connected to the inner wall of the support ring (6), and the other end of the first spring (13) is detached and connected to the moving plate (12).

6. The rust removal device for the outer surface of construction pipelines as described in claim 1, characterized in that: Support rods (20) are provided at both ends of the guide ring (4). An outer ring (5) is provided on the support rod (20). The diameter of the outer ring (5) is smaller than the diameter of the guide ring (4). A frame (3) is provided on the machine tool (1) corresponding to the outer ring (5).

7. The rust removal device for the outer surface of construction pipelines as described in claim 1, characterized in that: The machine tool (1) is provided with a base frame (2), which is T-shaped in general. One end of the base frame (2) is connected to the guide ring (4), and side wheels (11) are provided at both ends of the guide ring (4).

8. The rust removal device for the outer surface of construction pipelines as described in claim 1, characterized in that: The transmission mechanism (10) includes a servo motor (101), which is mounted on the base frame (2). The output end of the servo motor (101) is provided with a first gear (103). The outer wall of the second rotating ring (8) corresponding to the first gear (103) is provided with teeth (102). The first gear (103) meshes with the corresponding teeth (102). The first gear (103) is coaxially positioned with a second gear (105). One end of the second gear (105) is rotatably connected to a fixed plate (104). The fixed plate (104) is mounted on the outer wall of the support ring (6). The second gear (105) of the fixed plate (104) is meshed with a fourth gear (107) on one side. The fourth gear (107) is coaxially positioned with a third gear (106). The third gear (106) meshes with the teeth (102) on the outer wall of the first rotating ring (7).

9. The rust removal device for the outer surface of construction pipelines as described in claim 8, characterized in that: The teeth (102) of the first rotating ring (7) are located between the two lower pressure heads (14), the teeth (102) of the second rotating ring (8) are located between the two upper pressure heads (18), and the third gear (106) rotates in the opposite direction to the first gear (103).

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