A rough pipe inner wall rust removal device
By designing a rotary rust removal device with adjustable steel brush diameter and roller curvature, the adaptability problem of rust removal devices for coarse pipe inner walls in pipes of different diameters and with curved sections was solved, achieving a highly efficient and stable rust removal effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- UNIV OF SCI & TECH LIAONING
- Filing Date
- 2025-09-10
- Publication Date
- 2026-08-04
AI Technical Summary
Existing rust removal devices for coarse pipes are difficult to adapt to pipes of different diameters and curved pipes, resulting in low operating efficiency and equipment compatibility issues.
A rotary rust removal device with adjustable steel brush diameter and roller curvature is used. Combined with a hinge, the device can flexibly turn in curved pipes. It moves by the friction between the roller and the pipe wall, adapting to pipes of different diameters and curvatures.
It achieves efficient rust removal for pipes of different specifications, ensures stable movement of the device in curved pipes, reduces manual intervention, and improves operational efficiency and stability.
Smart Images
Figure CN224587733U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of rust removal machinery and equipment, and specifically relates to a rust removal device for the inner wall of a coarse pipe. Background Technology
[0002] Currently, my country primarily employs a combination of mechanical, chemical, and automated technologies for rust removal from the inner walls of large-diameter pipelines, such as oil and gas pipelines. Mechanical sandblasting and shot blasting are highly efficient and achieve the required cleanliness, but issues related to dust and cost need to be addressed. Chemical pickling is suitable for small pipelines but is subject to environmental restrictions. Therefore, there is a need for equipment capable of automatically removing rust from the inner walls of pipelines, applicable to most pipeline diameters.
[0003] Currently, there are few suitable equipment options for rust removal devices on the inner walls of large pipes for on-site applications, mainly due to the following reasons: high equipment costs, inconsistent technical standards, and adaptability issues for specific pipe shapes and materials.
[0004] A search of patent publication number CN218697338U reveals a "pipeline rust removal device, comprising a steel wire brush for cleaning rust from the inner wall of a pipe, a pressing mechanism for pressing the steel wire brush against the inner wall of the pipe during rust removal, a moving mechanism for facilitating the movement of the entire device during rust removal, and a support mechanism for supporting the entire device during rust removal. In use, two support frames are connected and supported by a connecting shaft, and the support arms are rotated and supported by support seats on the support frames. Support springs are used to push the support arms open inside the pipe, and a symmetrical figure-eight structure is used to improve the stability of the entire device. Then, a brushless motor stator on the outside of the connecting shaft drives a brushless motor rotor to rotate the rotating frame around the connecting shaft at high speed, thereby facilitating rapid cleaning and rust removal of the inner wall of the pipe." In this comparative patent, when encountering a curved pipe during rust removal, the device cannot be turned, thus limiting its working range.
[0005] Several technical challenges exist in the actual operation of pipeline rust removal equipment. Firstly, the pipe diameter varies significantly across different transport scenarios. When there is a mismatch between the equipment's rust removal range and the pipe diameter, operators are forced to frequently change equipment models or use the same type of machine, significantly impacting work efficiency. This compatibility issue stems not only from the diversity of pipe specifications but also from manufacturing tolerances and thermal deformation effects during long-term service, causing localized changes in pipe diameter. This makes it difficult for the fixed-parameter rust-removing steel brush to maintain continuous and effective contact with the pipe wall, leading to the technical challenge of residual oxide layers on the surface.
[0006] On the other hand, due to terrain limitations or construction conditions, pipeline routes often have curved sections. This complex working condition places dual functional requirements on the rust removal device for the inner wall of the pipeline: it needs to be equipped with a diameter adjustment system to accommodate multiple pipe diameters, and it also needs to have a flexible motion mechanism to cope with continuous bends. Summary of the Invention
[0007] The technical problem to be solved by this utility model is to provide a rust removal device for the inner wall of a coarse pipe, which is suitable for pipes of different diameters.
[0008] To achieve the above objectives, the present invention adopts the following technical solution:
[0009] A rust removal device for the inner wall of a coarse pipe includes a first central shaft, a second central shaft, a first connecting shaft, and a second connecting shaft. A rotary rust removal device is connected between the first central shaft and the second central shaft. The first central shaft and the first connecting shaft, as well as the second central shaft and the second connecting shaft, are connected by hinges. The outer end of the first connecting shaft is connected to a first traveling mechanism, and the outer end of the second connecting shaft is connected to a second traveling mechanism.
[0010] The rotary rust removal device includes a rotating shaft, a sleeve connected to the middle of the rotating shaft, a cross-shaped brush arm connected to the sleeve, a movable arm rod connected to the cross-shaped brush arm, and the arm rod being fixedly positioned in the groove on the cross-shaped brush arm and the arm rod by adjusting bolts. A steel brush is connected to the outer end of the arm rod. The two ends of the rotating shaft are rotatably connected to the first central shaft and the second central shaft respectively through bearings. A driven gear is connected to the rotating shaft, and the driven gear meshes with the driving gear on the output shaft of the steel brush drive motor.
[0011] The steel brush drive motor is fixedly connected to the first central shaft or the second central shaft.
[0012] The hinge includes a first hook, a second hook, and a hook block. The first hook and the second hook are arranged vertically, and the hook block is arranged between the first hook and the second hook. The two ends of the hook block are respectively connected to the first hook and the second hook via pins.
[0013] The first traveling mechanism and the second traveling mechanism have the same structure and are symmetrical to each other. The first traveling mechanism includes a mounting base, on which multiple circumferentially distributed main traveling arms are fixedly connected. Roller arms are hinged to the main traveling arms. Both the main traveling arms and the roller arms are provided with sliding grooves. A support rod is bolted between the two sliding grooves. A roller is connected to the outer end of the roller arm. A driven bevel gear is connected to the connecting shaft of the roller on one of the roller arms. The driven bevel gear meshes with the driving bevel gear on the output shaft of the roller drive motor.
[0014] The walking main arm and the mounting base are provided with an angle of 45°-50°.
[0015] A rust removal device for the inner wall of a coarse pipe also includes a placement plate, which is fixedly connected to a first connecting shaft or a second connecting shaft.
[0016] Compared with existing technologies, the beneficial effects of this utility model are:
[0017] 1. The rollers of this device contact the pipe wall, and the diameter of the steel brush and the bending degree of the roller arm can be adjusted to suit different pipe diameters. It adapts to various pipe specifications, ensuring stable and efficient operation.
[0018] 2. It can be turned when encountering curved pipes, ensuring the device can move flexibly. This solves the problem of rust removal from curved pipes.
[0019] 3. The automatic forward and backward movement of this device within the pipe channel can adapt to different working environments and reduce the degree of manual intervention. Attached Figure Description
[0020] Figure 1 This is a schematic diagram of the structure of this utility model.
[0021] Figure 2 This is a partial schematic diagram of the present invention.
[0022] Figure 3 This is a partial structural diagram of the rotary rust removal device.
[0023] Figure 4 This is a diagram showing the connection of the steel brush.
[0024] Figure 5 This is a structural diagram of the second traveling mechanism.
[0025] Figure 6 This is a schematic diagram of a roller drive structure.
[0026] Figure 7 This is a structural diagram of the hinge.
[0027] In the diagram: 1. First central shaft; 2. Second central shaft; 3. First connecting shaft; 4. Second connecting shaft; 5. Rotary rust removal device; 6. Hinge; 7. First traveling mechanism; 8. Second traveling mechanism; 9. Storage plate; 40. Groove; 41. Adjustment bolt;
[0028] 51. Rotating shaft; 52. Sleeve; 53. Cross-shaped brush arm; 54. Arm rod; 55. Steel brush; 56. Steel brush drive motor; 57. Driven gear; 58. Bearing; 59.
[0029] Tow hook 1 61, Tow hook 2 62, Tow hook block 63, Pin 64;
[0030] Mounting base 100, traveling main arm 101, roller arm 102, roller 103, roller drive motor 104, driving bevel gear 105, driven bevel gear 106, slide groove 107, support rod 108. Detailed Implementation
[0031] In the description of this utility model, it should be understood that the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0032] Unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0033] like Figures 1-7 A rust removal device for the inner wall of a coarse pipe includes a first central shaft 1, a second central shaft 2, a first connecting shaft 3, and a second connecting shaft 4. A rotary rust removal device 5 is connected between the first central shaft 1 and the second central shaft 2. The first central shaft 1 and the first connecting shaft 3, the second central shaft 2 and the second connecting shaft 4 are respectively connected by hinges 6. The outer end of the first connecting shaft 3 is connected to a first traveling mechanism 7, and the outer end of the second connecting shaft 4 is connected to a second traveling mechanism 8.
[0034] The rotary rust removal device 5 includes a rotating shaft 51, a sleeve 52 connected to the middle of the rotating shaft 51, a cross-shaped brush arm 53 connected to the sleeve 52, an arm rod 54 movably inserted into the cross-shaped brush arm 53, a steel brush 55 connected to the outer end of the arm rod 54, and the arm rod 54 is fixedly positioned in the groove 40 on the cross-shaped brush arm 53 and the arm rod 54 by adjusting bolts 41, which can adjust the diameter of the steel brush 55.
[0035] The two ends of the rotating shaft 51 are rotatably connected to the first central shaft 1 and the second central shaft 2 via bearings 59, respectively. A driven gear 58 is connected to the rotating shaft 51, and the driven gear 58 meshes with the driving gear 57 on the output shaft of the steel brush drive motor 56.
[0036] The steel brush drive motor 56 is fixedly connected to the first central shaft 1 or the second central shaft 2. The steel brush drive motor 56 drives the steel brush to rotate through gear transmission, thereby achieving the effect of removing rust from the inner wall surface of the pipe.
[0037] The first traveling mechanism 7 and the second traveling mechanism 8 have the same structure and are symmetrical to each other. Both include a mounting base 100, on which multiple circumferentially distributed main traveling arms 101 are fixedly connected. Roller arms 102 are hinged to the main traveling arms 101. Both the main traveling arms 101 and the roller arms 102 have sliding grooves 107, and a support rod 108 is bolted between the sliding grooves 107. Rollers 103 are connected to the outer ends of the roller arms 102. A driven bevel gear 106 is connected to the connecting shaft of the roller 103 on one of the roller arms 102. The driven bevel gear 106 meshes with a driving bevel gear 105 on the output shaft of the roller drive motor 104. The angle between the main traveling arms 101 and the roller arms 102 can be adjusted via the support rod 108 to adapt to the pipe wall diameter, ensuring that the rollers roll along the pipe wall, moving forward or backward. During operation, the device moves along the pipe wall direction, relying on the friction between the rollers and the pipe wall. The rollers not only ensure that the device can move smoothly on the pipe wall, but also buffer and absorb the vibration and impact generated during operation to a certain extent, further improving the reliability and durability of the device.
[0038] The traveling main boom 101 and the mounting base 100 are provided with an angle of 45°-50°.
[0039] The hinge 6 includes a first hook 61, a second hook 62, and a hook block 63. The first hook 61 and the second hook 62 are vertically arranged, and the hook block 63 is positioned between the first hook 61 and the second hook 62. Both ends of the hook block 63 are connected to the first hook 61 and the second hook 62 respectively via pins 64. Due to the hinge 6, when the device is located in a curved pipe, it can turn with the bend and smoothly pass through the curved pipe.
[0040] A rust removal device for the inner wall of a coarse pipe also includes a placement plate 9, which is fixedly connected to a first connecting shaft 3 or a second connecting shaft 4.
[0041] To make the objectives, technical solutions, and technical effects of this utility model clearer, the technical solutions in the embodiments of this utility model are now described clearly and completely. However, the embodiments described below are only some embodiments of this utility model, not all embodiments. All other embodiments obtained by those skilled in the art in conjunction with the embodiments of this utility model without creative effort are within the scope of protection of this utility model.
[0042] Example:
[0043] A rust removal device for the inner wall of a coarse pipe includes a first central shaft 1, a second central shaft 2, a first connecting shaft 3, and a second connecting shaft 4. A rotary rust removal device 5 is connected between the first central shaft 1 and the second central shaft 2. The rotary rust removal device 5 includes a rotating shaft 51, a sleeve 52 connected to the middle of the rotating shaft 51, a cross-shaped brush arm 53 connected to the sleeve 52, and a movable arm 54 inserted into the cross-shaped brush arm 53. The arm 54 is fixedly positioned in a slot 40 on the cross-shaped brush arm 53 and the arm 54 by adjusting bolts 41. A steel brush 55 is connected to the outer end of the arm 54. The two ends of the rotating shaft 51 are rotatably connected to the first central shaft 1 and the second central shaft 2 respectively through bearings 59. A driven gear 58 is connected to the rotating shaft 51, and the driven gear 58 meshes with a driving gear 57 on the output shaft of a steel brush drive motor 56. The steel brush drive motor 56 is fixedly connected to the first central shaft 1.
[0044] The first connecting shaft 3 is used to fix and connect the shelf 9.
[0045] The first central shaft 1 and the first connecting shaft 3, as well as the second central shaft 2 and the second connecting shaft 4, are connected by hinges 6. Each hinge 6 includes a first hook 61, a second hook 62, and a hook block 63. The first hook 61 and the second hook 62 are vertically arranged, and the hook block 63 is positioned between the first hook 61 and the second hook 62. Both ends of the hook block 63 are connected to the first hook 61 and the second hook 62 respectively via pins 64. The first central shaft 1 and the first connecting shaft 3 connect the first hook 61 and the second hook 62, respectively, and the second central shaft 2 and the second connecting shaft 4 also connect the first hook 61 and the second hook 62, respectively.
[0046] The outer end of the first connecting shaft 3 is connected to the first traveling mechanism 7, and the outer end of the second connecting shaft 4 is connected to the second traveling mechanism 8. The first traveling mechanism 7 and the second traveling mechanism 8 have the same structure and are symmetrical to each other. They include a mounting base 100, on which three circumferentially distributed traveling main arms 101 are welded. The traveling main arms 101 and the mounting base 100 are provided with a 45° angle.
[0047] The traveling main boom 101 is hinged to the roller arm 102 via a pin. Both the traveling main boom 101 and the roller arm 102 are provided with sliding grooves 107. A support rod 108 is bolted between the sliding grooves 107. The outer end of the roller arm 102 is connected to a roller 103.
[0048] One of the roller arms 102 has a roller 103 connected to a driven bevel gear 106 on its connecting shaft. The driven bevel gear 106 meshes with a driving bevel gear 105 on the output shaft of the roller drive motor 104.
[0049] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and basic spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A rust removal device for the inner wall of a coarse pipe, characterized in that, It includes a first central shaft, a second central shaft, a first connecting shaft, and a second connecting shaft. A rotary rust removal device is connected between the first central shaft and the second central shaft. The first central shaft and the first connecting shaft, as well as the second central shaft and the second connecting shaft, are connected by hinges. The outer end of the first connecting shaft is connected to a first traveling mechanism, and the outer end of the second connecting shaft is connected to a second traveling mechanism.
2. The rust removal device for the inner wall of a coarse pipe according to claim 1, characterized in that, The rotary rust removal device includes a rotating shaft, a sleeve connected to the middle of the rotating shaft, a cross-shaped brush arm connected to the sleeve, a movable arm rod connected to the cross-shaped brush arm, and the arm rod being fixedly positioned in the groove on the cross-shaped brush arm and the arm rod by adjusting bolts. A steel brush is connected to the outer end of the arm rod. The two ends of the rotating shaft are rotatably connected to the first central shaft and the second central shaft respectively through bearings. A driven gear is connected to the rotating shaft, and the driven gear meshes with the driving gear on the output shaft of the steel brush drive motor.
3. The rust removal device for the inner wall of a coarse pipe according to claim 2, characterized in that, The steel brush drive motor is fixedly connected to the first central shaft or the second central shaft.
4. The rust removal device for the inner wall of a coarse pipe according to claim 1, characterized in that, The hinge includes a first hook, a second hook, and a hook block. The first hook and the second hook are arranged vertically, and the hook block is arranged between the first hook and the second hook. The two ends of the hook block are respectively connected to the first hook and the second hook via pins.
5. The rust removal device for the inner wall of a coarse pipe according to claim 1, characterized in that, The first traveling mechanism and the second traveling mechanism have the same structure and are symmetrical to each other. The first traveling mechanism includes a mounting base, on which multiple circumferentially distributed main traveling arms are fixedly connected. Roller arms are hinged to the main traveling arms. Both the main traveling arms and the roller arms are provided with sliding grooves. A support rod is bolted between the two sliding grooves. A roller is connected to the outer end of the roller arm. A driven bevel gear is connected to the connecting shaft of the roller on one of the roller arms. The driven bevel gear meshes with the driving bevel gear on the output shaft of the roller drive motor.
6. The rust removal device for the inner wall of a coarse pipe according to claim 5, characterized in that, The walking main arm and the mounting base are provided with an angle of 45°-50°.
7. The rust removal device for the inner wall of a coarse pipe according to claim 1, characterized in that, It also includes a shelf, which is fixedly connected to the first connecting shaft or the second connecting shaft.