A multi-functional mechanical arm of a pipeline repairing robot
By designing a multifunctional robotic arm for pipeline repair, and utilizing a combination of adjusting plates, clamps, and scrapers, the problem of unstable positioning of robotic arms in existing technologies has been solved, enabling stable cleaning and precise operation of the inner wall of pipelines.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUILIN UNIV OF ELECTRONIC TECH
- Filing Date
- 2025-06-20
- Publication Date
- 2026-05-26
AI Technical Summary
Existing robotic arms have difficulty maintaining a stable center position during pipeline repair, resulting in an unstable cleaning structure and an inability to effectively clean the inner wall of the pipeline.
A multifunctional robotic arm for pipeline repair was designed. It adopts an adjusting plate and clamping plate structure, combined with the elastic insertion of the scraper and threaded transmission, to achieve centered positioning and stable cleaning of the tool. Precise control is achieved through hydraulic telescopic rod and motor drive.
It enables stable centering and cleaning of the tool within the pipeline, improving the cleaning effect. It can adjust the cleaning force according to the condition of the deposits on the pipe wall, thus improving operational accuracy and efficiency.
Smart Images

Figure CN224272555U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of pipeline repair equipment, specifically a multi-functional robotic arm for pipeline repair. Background Technology
[0002] In urban infrastructure and industrial production systems, pipelines for water supply, drainage, gas, oil, and other applications play a vital role in transportation. After prolonged use, the inner walls of these pipelines are prone to problems such as the accumulation of foreign objects, corrosion, and damage. Repair robots with robotic arms are needed to hold and use tools for auxiliary repairs to ensure the pipelines operate normally. However, existing robotic arms are not convenient for centering during use, making it difficult for the cleaning structure to stably clean the inner walls of the pipeline, and tools are not easily kept in the center of the pipeline.
[0003] Therefore, those skilled in the art have provided a multi-functional robotic arm for pipeline repair to address the problems raised. Utility Model Content
[0004] To address the aforementioned problems, this utility model provides a multi-functional robotic arm for pipeline repair.
[0005] To achieve the above objectives, the technical solution of this utility model is as follows:
[0006] A multi-functional robotic arm for pipe repair includes:
[0007] Mounting rack;
[0008] Two adjustment plates are symmetrically arranged at the bottom of the mounting frame and are slidably positioned facing each other or in opposite directions.
[0009] Clamping plates are fixed to the end of the adjusting plate away from the mounting bracket. The two clamping plates are used to hold the size tool.
[0010] A scraper, which is elastically inserted into the adjusting plate along the moving direction of the adjusting plate, with one end of the scraper passing through the two adjusting plates on opposite sides, is used to clean the inner wall of the pipe.
[0011] When the two clamps are in contact, the distance between the cleaning ends of the two scrapers is equal to the diameter of the pipe to be repaired.
[0012] Preferably, the scraper is configured as a "T" shape, and two inner grooves are opened on the adjustment plate. Two pins are symmetrically fixed on one side of the scraper. The two pins are respectively inserted into the two inner grooves, and springs are sleeved on the pins, with the springs located in the inner grooves.
[0013] Preferably, the clamping plate has a slot, and the slot is semi-cylindrical, with two slots fitting together to form a cylinder.
[0014] Preferably, a first motor is fixedly mounted on one side of the mounting bracket, and a first rotating shaft is fixedly mounted on the output end of the first motor. Two adjusting plates are sleeved on the first rotating shaft, and the first rotating shaft is provided with two sections of threads with opposite directions. The two adjusting plates are respectively adapted to the two sections of the threads.
[0015] Preferably, a hydraulic telescopic rod is provided above the mounting frame, a second motor is fixedly installed at the output end of the hydraulic telescopic rod, a second rotating shaft is fixedly installed at the output end of the second motor, and the second rotating shaft is fixedly connected to the top of the mounting frame.
[0016] In summary, this utility model has the following beneficial technical effects:
[0017] 1. When the two adjusting plates move in the same direction to the contact state, tools of a specific size can be installed on the two clamps. The distance between the cleaning ends of the two scrapers is equal to the diameter of the pipe to be repaired. When the whole is inserted into the pipe, the scraper contacts the inner wall of the pipe, which plays a positioning role and can center the repair tool, making the tool more convenient to use.
[0018] 2. When the inner wall needs to be cleaned, the two clamps are in contact and positioned, the scraper contacts the inner wall of the pipe, and the two adjusting plates move towards each other. The scraper is squeezed against the inner wall of the pipe by the elastic force. After the whole unit rotates, it can scrape along the pipe wall to clean. The two scrapers are under stable force, and the elastic force can be controlled as needed, thereby controlling the scraping force. This helps to select the appropriate scraper based on the actual condition of the deposits on the pipe wall. Attached Figure Description
[0019] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts. Wherein:
[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0021] Figure 2 This is a schematic diagram of the installation structure of the adjustment plate of this utility model;
[0022] Figure 3 This is a schematic diagram of the cross-sectional installation structure of the scraper of this utility model.
[0023] Explanation of reference numerals in the attached diagram: 1. Mounting bracket; 2. Adjusting plate; 3. Clamping plate; 4. Scraper; 5. Insert post; 6. Spring. Detailed Implementation
[0024] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.
[0025] A multi-functional robotic arm for pipe repair, as shown in the reference. Figure 1-3 ,include:
[0026] Mounting frame 1 serves as the supporting foundation for the entire robotic arm, providing a mounting platform and motion reference for other components. A hydraulic telescopic rod is installed above mounting frame 1, and a second motor is fixedly installed at the output end of the hydraulic telescopic rod. A second rotating shaft is fixedly installed at the output end of the second motor, and the second rotating shaft is fixedly connected to the top of mounting frame 1, allowing it to be driven to rotate and move up and down.
[0027] Two adjusting plates 2 are symmetrically arranged at the bottom of the mounting frame 1, sliding synchronously towards or in opposite directions. Furthermore, a first motor is fixedly mounted on one side of the mounting frame 1, its output end connected to a first rotating shaft. The two adjusting plates 2 are fitted onto the first rotating shaft, which has two sections of threads with opposite directions. The adjusting plates 2 are respectively adapted to the two sections of threads. When the first motor starts, the first rotating shaft rotates, using the thread transmission principle to drive the two adjusting plates 2 to slide synchronously, thus adjusting the distance between them.
[0028] The clamping plate 3 is fixed to the end of the adjusting plate 2 away from the mounting bracket 1. The two clamping plates 3 are used to clamp tools of a fixed size. Furthermore, semi-cylindrical slots are opened on the clamping plates 3. The slots of the two clamping plates 3 can be matched to form a complete cylindrical space, which can firmly clamp cylindrical repair tools of a specific size and ensure the stability of the tools during operation.
[0029] A scraper 4 is elastically inserted into the adjusting plate 2 along the moving direction of the adjusting plate 2. Furthermore, the scraper 4 is T-shaped, and the adjusting plate 2 has two inner grooves. Two inserts 5 are symmetrically fixedly installed on one side of the scraper 4, and each insert 5 is inserted into one of the two inner grooves. A spring 6 is fitted onto each insert 5, and the spring 6 is located within the inner groove. One end of the scraper 4 passes through the two adjusting plates 2 on opposite sides, and is used to clean the inner wall of the pipe.
[0030] When the two clamping plates 3 are in contact, that is, when the two adjusting plates 2 move in the same direction to the closest position in their stroke, tools of a specific size can be clamped and installed between the two clamping plates 3. The distance between the cleaning ends of the two scrapers 4 is equal to the diameter of the pipe to be repaired. If the pipe to be repaired is of standard size, when the whole is inserted into the pipe, the scraper 4 contacts the inner wall of the pipe, which has a positioning effect and can center the repair tools. Tools such as rigid pipes at the inlet of water pumps, lighting fixtures, and repair tools are of various types and can be selected and used as needed. When it is necessary to clean the inner wall, the two clamping plates 3 contact each other. After the whole is inserted, the scraper 4 contacts the inner wall of the pipe, and the two adjusting plates 2 move towards each other. The scraper 4 is squeezed against the inner wall of the pipe by elastic force. After rotation, it can scrape and clean along the pipe wall. The two scrapers 4 are under stable force, and the elastic force can be controlled as needed, thereby controlling the scraping force and helping to select the appropriate scraper based on the actual condition of the deposits on the pipe wall.
[0031] Based on this device, it can be further controlled by other control mechanisms that adjust position and direction to improve operational accuracy. This device is only a component of the overall repair robot and will not be described in detail here.
[0032] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.
Claims
1. A multi-functional robotic arm for pipeline repair, characterized in that, include: Mounting bracket (1); Two adjustment plates (2) are symmetrically arranged and are located at the bottom of the mounting bracket (1) and slide synchronously towards or in opposite directions; Clamping plate (3), which is fixed to the end of the adjusting plate (2) away from the mounting bracket (1), the two clamping plates (3) are used to clamp the size tool; The scraper (4) is elastically inserted into the adjusting plate (2) along the moving direction of the adjusting plate (2). One end of the scraper (4) passes through the two adjusting plates (2) on opposite sides and is used to clean the inner wall of the pipe. When the two clamps (3) are in contact, the distance between the cleaning ends of the two scrapers (4) is equal to the diameter of the pipe to be repaired.
2. The multi-functional robotic arm for pipeline repair according to claim 1, characterized in that: The scraper (4) is set in a "T" shape. Two inner grooves are opened on the adjusting plate (2). Two pins (5) are symmetrically fixed on one side of the scraper (4). The two pins (5) are respectively inserted into the two inner grooves, and springs (6) are sleeved on the pins (5). The springs (6) are located in the inner grooves.
3. The multi-functional robotic arm for pipeline repair according to claim 2, characterized in that: The clamp (3) has a slot, and the slot is set as a semi-cylindrical shape, and the two slots cooperate to form a cylindrical shape.
4. The multi-functional robotic arm for pipeline repair according to claim 3, characterized in that: A first motor is fixedly installed on one side of the mounting bracket (1), and a first rotating shaft is fixedly installed at the output end of the first motor. Two adjusting plates (2) are sleeved on the first rotating shaft. The first rotating shaft is provided with two sections of threads with opposite directions, and the two adjusting plates (2) are respectively adapted to the two sections of the threads.
5. The multi-functional robotic arm for pipeline repair according to claim 4, characterized in that: A hydraulic telescopic rod is provided above the mounting frame (1). A second motor is fixedly installed at the output end of the hydraulic telescopic rod. A second rotating shaft is fixedly installed at the output end of the second motor. The second rotating shaft is fixedly connected to the top of the mounting frame (1).