Pipeline crack detection device
By designing a servo motor-driven detection component, simultaneous detection inside and outside the pipeline is achieved, solving the problems of low detection efficiency and poor safety in existing technologies, improving detection accuracy and safety, and extending the service life of the pipeline.
Patent Information
- Application Number
- CN202520338063.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-28
- Publication Date
- 2025-12-09
- Estimated Expiration
- 2035-02-28
AI Technical Summary
Existing pipeline crack detection devices mainly focus on detecting the inside of the pipeline, with less emphasis on external detection. This results in low detection efficiency and poor safety, and requires two independent inspections, which can easily lead to the omission of important information.
A pipeline crack detection device was designed. The detection component driven by a servo motor can simultaneously perform circumferential detection on both the inside and outside of the pipeline. The movement of the detector is achieved through the linkage of the threaded rod and the pulley, which improves detection efficiency and safety.
It enables simultaneous inspection of both inside and outside the pipeline, improving inspection efficiency and accuracy, reducing operational errors, enhancing safety and stability, and extending the service life of the pipeline.
Smart Images

Figure CN223649126U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of pipeline crack detection technology, specifically a pipeline crack detection device. Background Technology
[0002] Pipelines play a vital role in industrial production and daily life, transporting liquids, gases, and other media. If cracks appear in pipelines, they can lead to leaks, potentially causing fires, explosions, and other serious safety accidents, threatening lives and property. Pipeline crack detection helps companies identify and resolve pipeline problems promptly, preventing production interruptions due to pipeline malfunctions. Furthermore, pipeline inspection can detect early signs of cracks, allowing for proper maintenance and repair, slowing crack propagation and extending pipeline lifespan. This is crucial for maintaining production continuity and stability, reducing operating costs, and improving economic efficiency.
[0003] The existing technology still has the following shortcomings:
[0004] 1. Most existing pipeline crack detection devices primarily focus on detecting cracks inside the pipeline, while detection of cracks on the outside of the pipeline is relatively less common. This singular detection method may miss some important crack information, and current detection devices often cannot simultaneously detect cracks inside and outside the pipeline, which means that two independent detection processes are required, thus reducing detection efficiency.
[0005] 2. In addition, relying on manual pushing of the pipeline for inspection is prone to uneven pushing speed, resulting in incomplete inspection, and is also prone to operational errors that could lead to personnel injury, making it less safe. Utility Model Content
[0006] To overcome the above-mentioned defects, this utility model provides a pipeline crack detection device, which solves the problems of low detection efficiency, poor detection accuracy and low safety of existing pipeline crack detection devices.
[0007] To achieve the above objectives, the present invention provides the following technical solution: a servo motor is fixedly connected to the bottom surface of the housing via a bracket; a detection component is provided on one side of the servo motor; a pulley is fixedly connected to the outside of the servo motor's shaft; two support frames are fixedly connected to the bottom surface of the housing; a threaded rod is rotatably connected between the support frames; a pulley is circumferentially fixedly connected to the end of the threaded rod near the servo motor; and the two pulleys are connected by a belt.
[0008] As a further embodiment of this utility model: a cylindrical clamp is threadedly connected to the threaded rod, and a limiting rod is fixedly connected between the support frames. The limiting rod passes through the cylindrical clamp and is slidably connected to it.
[0009] As a further embodiment of this utility model: the detection component includes a gear coaxially fixedly connected to the output end of the servo motor, a base is fixedly connected to the housing, and a cylinder is fixedly connected to the base.
[0010] As a further embodiment of this utility model: a toothed ring is fixedly connected to one end of the cylinder near the servo motor, and three clamping plates are equidistantly arranged around the other end of the cylinder. The clamping plates pass through the cylinder and are slidably connected thereto. A spring is fixedly connected between the clamping plates and the inner wall of the cylinder, and the spring is sleeved on the outside of the clamping plates.
[0011] As a further embodiment of this utility model: a cylindrical cover is fixedly connected to one side of the toothed ring, and a mating gear is provided on one side of the cylindrical cover, wherein the mating gear meshes with both the gear and the toothed ring.
[0012] As a further embodiment of this utility model: a detection rod and a mating rod are respectively fixedly connected to the end of the gear and the mating gear away from the servo motor, and a detector body is fixedly connected to both the detection rod and the mating rod.
[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0014] 1. This utility model is designed with a detection component. By controlling the rotation of the servo motor, the detection component can be driven to run, so that the two detector bodies can simultaneously perform circumferential detection on the inside and outside of the pipeline, which greatly improves the detection efficiency, enables early detection and repair of problems, thereby extending the service life of the pipeline and improving economic benefits.
[0015] 2. This utility model is designed with linkage, which controls the rotation of the servo motor to drive the pulley on the rotating shaft to rotate. Under the action of the belt, the pulley on the threaded rod and the threaded rod rotate. Under the limit of the limit rod, the cylindrical clamp can be moved, thereby driving the pipeline to enter and exit the testing equipment, improving safety and stability. Attached Figure Description
[0016] Figure 1 This is a three-dimensional structural diagram of a pipeline crack detection device proposed in this utility model;
[0017] Figure 2 This is a schematic diagram of the internal structure of a pipeline crack detection device proposed in this utility model;
[0018] Figure 3 This is a schematic diagram of the detection component of a pipeline crack detection device proposed in this utility model.
[0019] In the diagram: 1. Housing, 2. Servo motor, 3. Pulley, 4. Support frame, 5. Threaded rod, 6. Cylindrical clamp, 7. Limiting rod, 8. Gear, 9. Cylinder, 10. Gear ring, 11. Clamping plate, 12. Spring, 13. Cylinder cover, 14. Matching gear, 15. Detection rod, 16. Matching rod, 17. Detector body. Detailed Implementation
[0020] The technical solution of this patent will be further described in detail below with reference to specific embodiments.
[0021] like Figures 1-3 As shown, this utility model provides a technical solution:
[0022] The housing 1 has a servo motor 2 fixedly connected to its inner bottom surface via a bracket. A detection component is located on one side of the servo motor 2. A pulley 3 is fixedly connected to the external shaft of the servo motor 2. Two support frames 4 are fixedly connected to the inner bottom surface of the housing 1. A threaded rod 5 is rotatably connected between the support frames 4. A pulley 3 is circumferentially fixedly connected to the end of the threaded rod 5 near the servo motor 2. The two pulleys 3 are connected by a belt. A cylindrical clamp 6 is threadedly connected to the threaded rod 5. A limit rod 7 is fixedly connected between the support frames 4. The limit rod 7 passes through the cylindrical clamp 6 and is slidably connected to it. By controlling the rotation of the servo motor 2, the pulley 3 on the shaft of the servo motor 2 is driven to rotate. Under the transmission of the belt, the pulley 3 on the threaded rod 5 is driven to rotate, thereby causing the threaded rod 5 to rotate between the two support frames 4. Under the action of the limit rod 7, the cylindrical clamp 6 is moved, thereby realizing the advancement when inspecting the pipeline. Controlling the servo motor 2 to rotate in the opposite direction can realize the pushing out of the pipeline, improving the inspection accuracy and operational safety.
[0023] The detection assembly includes a gear 8 coaxially fixedly connected to the output end of the servo motor 2, a base fixedly connected to the housing 1, a cylinder 9 fixedly connected to the base, a gear ring 10 fixedly connected to one end of the cylinder 9 near the servo motor 2, and three clamping plates 11 equidistantly arranged circumferentially at the other end of the cylinder 9. The clamping plates 11 penetrate the cylinder 9 and are slidably connected to it. A spring 12 is fixedly connected between the clamping plates 11 and the inner wall of the cylinder 9, and the spring 12 is sleeved on the outside of the clamping plates 11. A cylinder cover 13 is fixedly connected to one side of the gear ring 10, and a mating gear 14 is provided on one side of the cylinder cover 13. The mating gear 14 meshes with both the gear 8 and the gear ring 10. A detection rod 15 and a mating rod 16 are fixedly connected to the ends of the gear 8 and the mating gear 14 away from the servo motor 2, respectively. A detector body 17 is fixedly connected to both the detection rod 15 and the mating rod 16.
[0024] The pipe to be inspected is placed at the end of the cylinder 9 away from the servo motor 2. One end of the pipe is fixed by three clamps 11 and springs 12 on the clamps 11. At this time, the detection rod 15 is located inside the pipe and the mating rod 16 is located outside the pipe. The pipe is then clamped by the cylindrical clamp 6. The servo motor 2 is controlled to rotate, which can also drive the gear 8, which is coaxially fixed to its output end, to rotate. This drives the mating gear 14 to rotate under the limit of the gear ring 10, thereby realizing the detection of the inside and outside of the pipe by the detector body 17 on the detection rod 15 and the mating rod 16, which greatly improves the detection efficiency. The housing 1 can protect the internal structure, and the cylinder cover 13 can support the mating gear 14.
[0025] The working principle of this utility model is as follows:
[0026] The pipe to be inspected is placed at the end of the cylinder 9 away from the servo motor 2. One end of the pipe is fixed by three clamps 11 and springs 12 on the clamps 11. At this time, the detection rod 15 is located inside the pipe and the mating rod 16 is located outside the pipe. The pipe is then clamped by the cylindrical clamp 6. The servo motor 2 is controlled to rotate, which drives the gear 8, which is coaxially fixed to its output end, to rotate. This drives the mating gear 14 to rotate under the limit of the gear ring 10, thereby realizing the detection of the inside and outside of the pipe by the detector body 17 on the detection rod 15 and the mating rod 16, which greatly improves the detection efficiency.
[0027] By controlling the rotation of servo motor 2, the pulley 3 on the shaft of servo motor 2 can also be driven to rotate. Under the transmission of the belt, the pulley 3 on the threaded rod 5 is driven to rotate, thereby driving the threaded rod 5 to rotate between the two support frames 4. Under the action of the limit rod 7, the cylindrical clamp 6 is driven to move, thereby realizing the advancement when inspecting the pipeline. Controlling the servo motor 2 to rotate in the opposite direction can realize the pushing out of the pipeline, improving the inspection accuracy and operation safety.
[0028] The preferred embodiments of this patent have been described in detail above. However, this patent is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this patent.
Claims
1. A pipe crack detection device, comprising a housing (1), characterized in that, A servo motor (2) is fixedly connected to the bottom surface of the housing (1) via a bracket. A detection component is provided on one side of the servo motor (2). A pulley (3) is fixedly connected to the outside of the rotating shaft of the servo motor (2). Two support frames (4) are fixedly connected to the bottom surface of the housing (1). A threaded rod (5) is rotatably connected between the support frames (4). A pulley (3) is circumferentially fixedly connected to the end of the threaded rod (5) near the servo motor (2). The two pulleys (3) are connected by a belt.
2. The pipe crack detection device according to claim 1, characterized in that: A cylindrical clamp (6) is threaded onto the threaded rod (5), and a limiting rod (7) is fixedly connected between the support frames (4). The limiting rod (7) passes through the cylindrical clamp (6) and is slidably connected to it.
3. The pipe crack detection device according to claim 2, characterized in that: The detection component includes a gear (8) coaxially fixedly connected to the output end of the servo motor (2), a base is fixedly connected to the housing (1), and a cylinder (9) is fixedly connected to the base.
4. The pipe crack detection device according to claim 3, characterized in that: A toothed ring (10) is fixedly connected to one end of the cylinder (9) near the servo motor (2). Three clamping plates (11) are equidistantly arranged around the other end of the cylinder (9). The clamping plates (11) penetrate the cylinder (9) and are slidably connected to it. A spring (12) is fixedly connected between the clamping plate (11) and the inner wall of the cylinder (9). The spring (12) is sleeved on the outside of the clamping plate (11).
5. A pipe crack detection device according to claim 4, characterized in that: A cylindrical cover (13) is fixedly connected to one side of the toothed ring (10), and a mating gear (14) is provided on one side of the cylindrical cover (13). The mating gear (14) meshes with both the gear (8) and the toothed ring (10).
6. A pipe crack detection device according to claim 5, characterized in that: The gear (8) and the mating gear (14) are respectively fixedly connected to a detection rod (15) and a mating rod (16) at the ends away from the servo motor (2). A detector body (17) is fixedly connected to both the detection rod (15) and the mating rod (16).