A device for treating weld seams on the inner wall of a pipe

Abstract

This utility model provides a device for treating weld seams on the inner wall of a pipeline, relating to the field of pipeline weld seam treatment technology. It includes: a sandblasting pipe with a sandblaster at one end; a first diameter-changing mechanism, at least three of which are spaced apart along the length of the sandblasting pipe, slidably connected to the inner wall of the pipeline; and a second and a third diameter-changing mechanism, a pair located near the two ends and the middle of the sandblasting pipe, respectively slidably connected to the inner wall of the pipeline, and the second and third diameter-changing mechanisms adjust their radial distance relative to the inner wall of the pipeline according to the inner wall. According to this utility model, the first diameter-changing mechanism can be manually adjusted to a suitable distance according to the pipeline diameter, allowing it to abut against the inner wall of the pipeline; the second and third diameter-changing mechanisms can be adaptively adjusted according to the pipe diameter and wall thickness, providing support when the inner wall of the pipeline changes; adapting to the treatment of pipelines with different diameters and wall thicknesses.

Description

Technical Field

[0001] This utility model relates to the field of pipeline weld treatment technology, specifically to a device for treating weld seams on the inner wall of a pipeline. Background Technology

[0002] Currently, the treatment of weld seams on the inner walls of pipelines largely relies on industrial pipeline robots. However, existing industrial pipeline robots have significant limitations in practical applications due to constraints in their structural design and cost control. On the one hand, their body structure is often not flexible enough to adapt to complex pipeline environments. For example, in prefabricated pipelines, due to the compact pipeline layout and limited space, the robot struggles to maneuver freely; when facing 1.5D right-angle bends, the small turning radius makes the robot prone to jamming or collisions; and when working on 45° slopes and vertical pipelines, they lack sufficient adhesion and stability, hindering smooth operation. On the other hand, existing robots lack effective adjustment mechanisms and cannot adapt to changes in the diameter and thickness of the pipeline inner wall. This results in significantly reduced accuracy and effectiveness of cleaning and sandblasting when working in pipelines of different specifications, making it difficult to meet diverse operational needs. Therefore, this invention proposes a pipeline inner wall weld seam treatment device to improve the above-mentioned problems. Utility Model Content

[0003] Therefore, the technical problem to be solved by this utility model is to overcome the defect that the pipe inner wall weld treatment device in the prior art cannot be adjusted according to the pipe diameter and wall thickness, thereby providing a pipe inner wall weld treatment device.

[0004] To address the aforementioned problems, this utility model provides a device for treating weld seams on the inner wall of pipes, comprising:

[0005] A sandblasting pipe, one end of which is equipped with a sandblaster;

[0006] The first diameter changing mechanism is provided at least three times spaced along the length of the sandblasting pipe, and the first diameter changing mechanism is slidably connected to the inner wall of the pipe.

[0007] The second and third diameter changing mechanisms are provided in pairs near the two ends and the middle of the sandblasting pipe. The second and third diameter changing mechanisms are slidably connected to the inner wall of the pipe, and the second and third diameter changing mechanisms adjust the radial distance relative to the inner wall of the pipe according to the inner wall of the pipe.

[0008] Preferably, the end of the sandblaster away from the sandblasting pipe is also provided with a connecting buckle, and the connecting buckle is connected to a sponge ball by a steel wire rope, and the sponge ball is slidably connected to the inner wall of the pipe.

[0009] Preferably, a first camera is provided near the sandblaster on the sandblasting pipe, with the first camera facing the sponge ball; a second camera is provided vertically on the outer side of the sandblasting pipe facing the inner wall of the pipe; and a third camera is provided near the third diameter reducing mechanism in the middle of the sandblasting pipe.

[0010] Preferably, an electrical box is provided in the middle of the sandblasting pipe, and the electrical box integrates electrical components.

[0011] Preferably, the first diameter changing mechanism includes: an adjusting cylinder and an adjusting rod. At least three adjusting cylinders are evenly arranged around the sandblasting pipe. The adjusting rod is disposed inside the adjusting cylinder and is screwed to the adjusting cylinder. A first roller is provided at the end of the adjusting rod away from the adjusting cylinder, and the first roller is rotatably connected to the adjusting rod.

[0012] Preferably, the second diameter-changing mechanism includes: a first cylinder, a first support ring, and a second support ring. The second support ring is connected to the sandblasting pipe. At least two first cylinders are evenly arranged along the sandblasting pipe. The fixed end of the first cylinder is connected to the sandblasting pipe, and the telescopic end of the first cylinder is connected to the first support ring. Three sets of first support rods and second support rods are evenly arranged along the first support ring. One end of the first support rod is rotatably connected to the second support ring, and the other end of the second support rod is respectively provided with a second roller. One end of the second support rod is rotatably connected to the second support ring, and the other end of the second support rod is rotatably connected to the middle part of the first support rod.

[0013] Preferably, the third diameter-changing mechanism includes: a third support rod and a second cylinder. Three second cylinders and three third support rods are evenly arranged along the center of the sandblasting pipe. At least three first connecting parts and two connecting parts are evenly arranged on the sandblasting pipe corresponding to the second cylinders and the third support rods, respectively. The first connecting parts are rotatably connected to one end of the third support rod, and the other end of the third support rod is rotatably connected to a third roller. The fixed end of the second cylinder is rotatably connected to the second connecting part, and the telescopic end of the second cylinder is rotatably connected to the middle part of the third support rod. A spring is sleeved on the telescopic end of the second cylinder.

[0014] Preferably, a pedometer is also provided on the outside of the sandblasting pipe.

[0015] The pipe inner wall weld treatment device provided by this utility model has the following beneficial effects:

[0016] 1. This utility model has a first diameter-changing mechanism that can be manually adjusted to a suitable distance according to the pipe diameter, so that it abuts against the inner wall of the pipe; the second and third diameter-changing mechanisms can be adjusted according to the pipe diameter and wall thickness, so as to play a supporting role when the inner wall of the pipe changes; adapting to the treatment of pipes with different diameters and wall thicknesses.

[0017] 2. This utility model also uses the extension and retraction of the first cylinder to make the first support ring move relative to each other, so that the first support rod and the second support rod form a triangular linkage, causing the second support rod to open or retract relative to each other, thereby adjusting the angle of the second roller relative to the inner wall of the pipe, so as to adjust different wall thicknesses or pipe diameters.

[0018] 3. This utility model also uses the extension and retraction movement of the second cylinder to cause the third support rod to rotate relative to the first connecting part as an axis, thereby adjusting the angle between the third support rod and the sandblasting pipe, and thus adjusting accordingly according to the pipe diameter and wall thickness of the sandblasting pipe. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the assembly of this utility model;

[0020] Figure 2 This is a schematic diagram of the installation of the first support rod structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the installation of the third support rod structure of this utility model.

[0022] The reference numerals in the attached figures are as follows:

[0023] 1. Sandblasting pipe; 2. Sandblaster; 3. First diameter changing mechanism; 4. Second diameter changing mechanism; 5. Third diameter changing mechanism; 6. Connecting buckle; 7. Steel wire rope; 8. Sponge ball; 9. First camera; 10. Second camera; 11. Third camera; 12. Electrical box; 13. Adjusting cylinder; 14. Adjusting rod; 15. First roller; 16. First cylinder; 17. First support ring; 18. Second support ring; 19. First support rod; 20. Second support rod; 21. Second roller; 22. Third support rod; 23. Second cylinder; 24. First connecting part; 25. Second connecting part; 26. Pedometer; 27. Spring; 28. Third roller. Detailed Implementation

[0024] like Figure 1-3 As shown, this utility model provides a device for treating weld seams on the inner wall of a pipe, which includes:

[0025] A sandblasting pipe 1, with a sandblaster 2 installed at one end of the sandblasting pipe 1;

[0026] The first diameter changing mechanism 3 is provided at least three times along the length of the sandblasting pipe, and the first diameter changing mechanism 3 is slidably connected to the inner wall of the pipe.

[0027] The second diameter changing mechanism 4 and the third diameter changing mechanism 5 are provided in pairs near the two ends and the middle of the sandblasting pipe. The second diameter changing mechanism 4 and the third diameter changing mechanism 5 are slidably connected to the inner wall of the pipe, and the second diameter changing mechanism 4 and the third diameter changing mechanism 5 adjust the radial distance relative to the inner wall of the pipe according to the inner wall. Figure 1-3 As shown, the sandblaster and sandblasting pipe 1 are commercially available. The sandblaster is a wear-resistant, high-pressure flexible pipe that can be bent along the pipe wall. The sandblaster 2 is connected to the sandblasting pipe 1, with the other end connected to an external air compressor. An external sandblasting pipeline is formed through an air tank, a refrigerated dryer, a sandblasting can, and other pipelines. The air compressor provides compressed air, which is then dried by a refrigerated dryer and a filter to remove moisture, oil, and other impurities. The abrasive material in the sandblasting can is then transported to the cleaning section through the sandblasting pipe 1. The first diameter reducing mechanism 3 can be manually adjusted to a suitable distance according to the pipe diameter, allowing it to abut against the inner wall of the pipe. The second and third diameter reducing mechanisms 4 and 5 can be adjusted according to the pipe diameter and wall thickness to provide support when the inner wall of the pipe changes. This adapts to the processing of pipes with different diameters and wall thicknesses.

[0028] In some embodiments, a connecting buckle 6 is provided at the end of the sandblaster away from the sandblasting pipe. The connecting buckle 6 is connected to a sponge ball 8 via a steel wire rope 7, and the sponge ball 8 is slidably connected to the inner wall of the pipe. Figure 1-3 As shown, the connection between the connecting buckle 6 and the sandblaster can be a bolted connection, providing an attachment point for the connection of the wire rope 7. The wire rope 7 can be welded or connected using commercially available connectors. At the connecting buckle 6, the wire rope 7 provides support for the sponge ball 8. The sponge ball and the inner wall of the pipe form a support. The sponge ball 8 is commercially available, and the wire rope 7 is connected to the middle of the sponge ball 8. The sponge ball 8 is commercially available and made of EPE. It is located at the front end of the entire device. When entering the pipe, it is pushed into the designated position by the whole vehicle equipment. Its function is to prevent the abrasive and dust in the sandblasting process from being affected by the airflow and contaminating the front pipe. At the same time, when the whole vehicle exits the pipe, some abrasive can be pushed out of the pipe through the EPE sponge ball 8, reducing the workload of the recovery vehicle.

[0029] In some embodiments, a first camera 9 is disposed near the sandblaster on the sandblasting pipe, the first camera 9 facing the sponge ball 8; a second camera 10 is disposed perpendicularly to the inner wall of the pipe on the outer side of the sandblasting pipe; and a third camera 11 is disposed near the third diameter-changing mechanism 5 in the middle of the sandblasting pipe. For example... Figure 1-3As shown, the first camera 9, the second camera 10, and the third camera 11 are all commercially available. They can be connected by snap-fit ​​or bolt connection. The first camera 9 is a front-view camera, the second camera 10 is an inspection camera, and the third camera 11 is a vehicle body posture monitoring camera. They monitor the front, side, and overall posture of the device, respectively, to provide a reference for further movement or adjustment of the device. They are connected through circuits and electrical components in the electrical box 12.

[0030] In some embodiments, an electrical box 12 is provided in the middle of the sandblasting pipe 1, and the electrical box 12 integrates electrical components. For example... Figure 1-3 As shown, the electrical box 12 integrates electrical components such as servo motor driver, switch, control motherboard, power supply, and solenoid valve, all of which are commercially available and serve to provide the necessary components for the entire device.

[0031] In some embodiments, the first diameter-changing mechanism 3 includes: an adjusting cylinder 13 and an adjusting rod 14. At least three adjusting cylinders 13 are evenly arranged around the sandblasting pipe. The adjusting rod 14 is disposed inside the adjusting cylinder 13 and screwed to the adjusting cylinder 13. A first roller 15 is provided at the end of the adjusting rod 14 away from the adjusting cylinder 13, and the first roller 15 is rotatably connected to the adjusting rod 14. Figure 1-3 As shown, the adjusting cylinder 13 can be extended by a connecting rod. By screwing the adjusting cylinder 13 and the adjusting rod 14 together, the distance between the first roller 15 and the inner wall of the pipe can be adjusted so that the first roller 15 can roll along the inner wall of the pipe.

[0032] In some embodiments, the second diameter-changing mechanism 4 includes: a first cylinder 16, a first support ring 17, and a second support ring 18. The second support ring 18 is connected to the sandblasting pipe. At least two first cylinders 16 are evenly arranged along the sandblasting pipe. The fixed end of the first cylinder 16 is connected to the sandblasting pipe, and the telescopic end of the first cylinder 16 is connected to the first support ring 17. Three sets of first support rods 19 and second support rods 20 are evenly arranged along the first support ring 17. One end of the first support rod 19 is rotatably connected to the second support ring 18, and the other end of the second support rod 20 is respectively provided with a second roller 21. One end of the second support rod 20 is rotatably connected to the second support ring 18, and the other end of the second support rod 20 is rotatably connected to the middle part of the first support rod 19. Figure 1-3As shown, the first cylinder 16 can be connected to the mounting ring at the bottom, and the sandblasting pipe is connected to the inner side of the mounting ring. By extending and retracting the first cylinder 16, the first support ring 17 moves relative to each other, so that the first support rod 19 and the second support rod 20 form a triangular linkage, causing the second support rod 20 to open or retract relative to each other, thereby adjusting the angle of the second roller 21 relative to the inner wall of the pipe, so as to adjust different wall thicknesses or pipe diameters.

[0033] In some embodiments, the third diameter-changing mechanism 5 includes: a third support rod 22 and a second cylinder 23. Three of the second cylinder 23 and the third support rod 22 are evenly arranged along the center of the sandblasting pipe. At least three first connecting portions 24 and second connecting portions 25 are evenly arranged on the sandblasting pipe, corresponding to the second cylinder 23 and the third support rod 22, respectively. The first connecting portions 24 are rotatably connected to one end of the third support rod 22, and the other end of the third support rod 22 is rotatably connected to a third roller 28. The fixed end of the second cylinder 23 is rotatably connected to the second connecting portion 25, and the telescopic end of the second cylinder 23 is rotatably connected to the middle of the third support rod 22. A spring 27 is sleeved on the telescopic end of the second cylinder 23. Figure 1-3 As shown, the spring 27 is commercially available. The spring 27 abuts against two mounting rings, which are respectively fixed to the telescopic end and the fixed end of the second cylinder 23 to provide cushioning. The telescopic movement of the second cylinder 23 causes the third support rod 22 to rotate relative to the first connecting part 24 as an axis, thereby adjusting the angle between the third support rod 22 and the sandblasting pipe 1 according to the pipe diameter and wall thickness of the sandblasting pipe 1.

[0034] When faced with different pipe wall thicknesses, the second diameter changing mechanism 4 and the third diameter changing mechanism 5 work alternately or simultaneously, so that the entire device can be adjusted under different pipe wall thicknesses and pipe diameters.

[0035] In some embodiments, a pedometer 26 is also provided on the outside of the sandblasting pipe. For example... Figure 1-3 As shown, the pedometer 26 is commercially available. It can be composed of an encoder and a step counting wheel. It can provide real-time feedback on the distance the entire device travels in the pipeline. During operation, it works in conjunction with the vision positioning part to provide feedback on the working status, the location of the required work area, the walking length, and the work effect.

[0036] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model. The above description is only a preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A pipe inner wall weld treatment apparatus characterized by, include: A sandblasting pipe, one end of which is equipped with a sandblaster; The first diameter changing mechanism is provided at least three times spaced along the length of the sandblasting pipe, and the first diameter changing mechanism is slidably connected to the inner wall of the pipe. The second and third diameter changing mechanisms are provided in pairs near the two ends and the middle of the sandblasting pipe. The second and third diameter changing mechanisms are slidably connected to the inner wall of the pipe, and the second and third diameter changing mechanisms adjust the radial distance relative to the inner wall of the pipe according to the inner wall of the pipe.

2. The pipe inner wall weld treatment device according to claim 1, characterized in that: The sandblaster is also provided with a connecting buckle at the end away from the sandblasting pipe. The connecting buckle is connected to a sponge ball by a steel wire rope. The sponge ball is slidably connected to the inner wall of the pipe.

3. The pipe inner wall weld treatment device according to claim 2, characterized in that: A first camera is provided near the sandblaster on the sandblasting pipe, with the first camera facing the sponge ball. A second camera is provided vertically on the outside of the sandblasting pipe facing the inner wall of the pipe. A third camera is provided near the third diameter reducing mechanism in the middle of the sandblasting pipe.

4. The pipe inner wall weld treatment device according to claim 2, characterized in that: An electrical box is installed in the middle of the sandblasting pipe, and electrical components are integrated inside the electrical box.

5. The pipe inner wall weld treatment device according to claim 2, characterized in that: The first diameter changing mechanism includes: an adjusting cylinder and an adjusting rod. At least three adjusting cylinders are evenly arranged around the sandblasting pipe. The adjusting rod is disposed inside the adjusting cylinder and is screwed to the adjusting cylinder. A first roller is provided at the end of the adjusting rod away from the adjusting cylinder, and the first roller is rotatably connected to the adjusting rod.

6. The pipe inner wall weld treatment device according to claim 2, characterized in that: The second diameter-changing mechanism includes: a first cylinder, a first support ring, and a second support ring. The second support ring is connected to the sandblasting pipe. At least two first cylinders are evenly arranged along the sandblasting pipe. The fixed end of the first cylinder is connected to the sandblasting pipe, and the telescopic end of the first cylinder is connected to the first support ring. Three sets of first support rods and second support rods are evenly arranged along the first support ring. One end of the first support rod is rotatably connected to the second support ring, and the other end of the second support rod is respectively provided with a second roller. One end of the second support rod is rotatably connected to the second support ring, and the other end of the second support rod is rotatably connected to the middle part of the first support rod.

7. The pipe inner wall weld treatment device according to claim 2, characterized in that: The third diameter-changing mechanism includes: a third support rod and a second cylinder. Three second cylinders and three third support rods are evenly arranged along the center of the sandblasting pipe. At least three first connecting parts and two connecting parts are evenly arranged on the sandblasting pipe corresponding to the second cylinders and the third support rods, respectively. The first connecting parts are rotatably connected to one end of the third support rod, and the other end of the third support rod is rotatably connected to a third roller. The fixed end of the second cylinder is rotatably connected to the second connecting part, and the telescopic end of the second cylinder is rotatably connected to the middle part of the third support rod. A spring is sleeved on the telescopic end of the second cylinder.

8. The pipe inner wall weld treatment device according to claim 1, characterized in that: A pedometer is also installed on the outside of the sandblasting pipe.

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