CCTV pipeline detection robot flexible slow descent auxiliary device in a drop well environment
By designing a flexible descent assist device, the CCTV robot can be descentd slowly using guide rods and electromagnetic components, solving the problem of barrier-free path transition in drop wells and improving detection safety and stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN HUAZHANG TESTING TECHNOLOGY CO LTD
- Filing Date
- 2025-07-11
- Publication Date
- 2026-06-02
AI Technical Summary
Traditional CCTV inspection robots have difficulty making unobstructed transitions inside drop wells, and there are safety risks associated with manual assistance when entering the well.
Design a flexible descent auxiliary device for CCTV pipeline inspection robots. The device uses guide rods and electromagnetic components to achieve robot descent, controls the descent speed through a winch cable, and uses a stainless steel ball head to adjust the angle with the pipe wall to adapt to complex structures.
The robot can operate stably inside the drop well, avoiding manual operation, improving safety, and adapting to complex well environments.
Smart Images

Figure CN224315753U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of pipeline inspection technology, specifically relating to a flexible descent auxiliary device for a CCTV pipeline inspection robot in a drop well environment. Background Technology
[0002] With the upgrading and renovation of municipal drainage systems, the application of ultra-deep drop manholes (drop > 6m) is becoming increasingly widespread. These drop manholes typically employ a multi-layered baffle design, separating energy dissipation zones and maintenance zones, and achieving multi-stage energy dissipation through staggered vertical downpipes. Numerous studies have shown that while ultra-deep anti-fall drop manholes effectively mitigate the kinetic energy of water flow with high drops, they also introduce vertical obstacles such as baffles, retaining walls, and ladders, making the internal structure highly complex. This structural characteristic directly makes it difficult for traditional CCTV pipeline inspection robots to operate smoothly within these manholes, posing a significant challenge to inspection tasks.
[0003] Current mainstream CCTV inspection robots primarily rely on roller structures for linear crawling. However, they struggle to navigate smoothly through stepped drops in drainage manholes. Furthermore, the bottom of these manholes often contains accumulated water and sediment, interfering with the robot's positioning and stable operation. Manual assistance in the manhole is not only difficult but also carries serious safety risks such as falls and exposure to highly toxic gases. Therefore, relying on traditional CCTV technology for drainage pipe inspection in complex deep well environments presents significant technical bottlenecks and safety hazards. Utility Model Content
[0004] The purpose of this invention is to provide a flexible descent auxiliary device for CCTV pipeline inspection robots in drop well environments, so as to solve the problem mentioned in the background art that current inspection robots are difficult to achieve unobstructed path transitions.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a flexible descent auxiliary device for a CCTV pipeline inspection robot in a drop well environment, comprising at least two guide rods, each composed of multiple rod bodies;
[0006] A socket plate is attached to the bottom end of the guide rod and fits against the pipe wall.
[0007] A limiting component is installed at the top of the guide rod. In use, the pipeline inspection robot is fitted onto the guide rod, and then the end of the pipeline inspection robot is connected to an external winch line. The pipeline inspection robot slides down the guide rod via the lower winch line. The pipeline inspection robot is equipped with an electromagnetic component, which is energized to achieve a damping connection with the guide rod, thereby slowing down the descent speed of the pipeline inspection robot.
[0008] Preferably, the rod body constituting the end of the guide rod is connected to the socket plate; a ball sleeve is fixedly provided at the bottom end of the rod body at the end position, and a stainless steel ball head is provided inside the ball sleeve. The stainless steel ball head is fixedly connected to the socket plate, and the socket plate can rotate inside the ball sleeve through the stainless steel ball head, thereby ensuring that the socket plate can be angled and connected to the pipe wall of different planes.
[0009] Preferably, a connecting post is fixed at the top of each rod, and a socket for inserting the connecting post is opened at the bottom of the rod forming the upper middle position of the guide rod. The length of the entire guide rod can be adjusted by the insertion and cooperation of the connecting post and the socket.
[0010] Preferably, a threaded hole is provided through one side of the inner wall of the insertion hole, and a clamping bolt is screwed into the threaded hole. The clamping bolt abuts against the side of the connecting post inserted into the insertion hole, thereby achieving a clamping connection of the connecting post.
[0011] Preferably, the socket plate has grooves at both ends for the connecting post to be inserted, and bolts pass through the connection between the socket plate and the connecting post to achieve a fixed connection between the end plate and the guide rod.
[0012] Preferably, the rotation angle of the stainless steel ball head within the ball sleeve ranges from -° to +°.
[0013] Preferably, the longitudinal cross-sectional area of the socket plate is smaller than that of the rod. The top of the pipeline inspection robot is not completely wrapped around the rod, but is wrapped in a semi-open manner, so that when it moves to the position of the socket plate, it can detach from the socket plate and enter the pipeline for subsequent inspection. The shape of the socket plate includes a columnar body and a cylinder.
[0014] Compared with the prior art, the beneficial effects of this utility model are:
[0015] The design of this utility model enables the formation of a guide rod inside the drop well for the robot to slide downwards, allowing the robot to descend slowly with the help of an external winch. It can also overcome the accumulated water and sediment inside the drop well, ensuring the robot's positioning and stable operation. The entire positioning process does not require manual operation down into the well, making it very convenient to use and overcoming the shortcomings of existing technologies. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of this utility model;
[0017] Figure 2 This is a schematic diagram of the structure of the rod body of this utility model;
[0018] Figure 3 This is a schematic diagram showing the connection between the ball sleeve and the stainless steel ball head of this utility model.
[0019] In the picture:
[0020] 100. Rod body; 101. Connecting post; 102. End plate; 103. Screw hole; 105. Insertion hole; 106. Clamping bolt;
[0021] 200. Socket plate;
[0022] 300, ball sleeve; 301, stainless steel ball head. Detailed Implementation
[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0024] Please see Figures 1 to 3 This utility model provides a technical solution: a flexible descent auxiliary device for a CCTV pipeline inspection robot in a drop well environment, comprising...
[0025] There are at least two guide rods, each consisting of multiple rods of 100mm diameter.
[0026] A socket plate 200 is connected to the bottom end of the guide rod, and the socket plate 200 is in contact with the pipe wall;
[0027] A limiting component is installed at the top of the guide rod. In use, the pipeline inspection robot is fitted onto the guide rod, and then the end of the pipeline inspection robot is connected to an external winch line. The pipeline inspection robot slides down the guide rod via the lower winch line. The pipeline inspection robot is equipped with an electromagnetic component, which is energized to achieve a damping connection with the guide rod, thereby slowing down the descent speed of the pipeline inspection robot.
[0028] In this embodiment, preferably, the rod body 100 constituting the end of the guide rod is connected to the socket plate 200; a ball sleeve 300 is fixedly provided at the bottom end of the rod body 100 at the end position, and a stainless steel ball head 301 is provided inside the ball sleeve 300. The stainless steel ball head 301 is fixedly connected to the socket plate 200, and the socket plate 200 can rotate inside the ball sleeve 300 through the stainless steel ball head 301, thereby ensuring that the socket plate 200 can be angled and connected to the pipe wall of different planes.
[0029] In this embodiment, preferably, a connecting post 101 is fixed at the top of each rod 100, and an insertion hole 105 is opened at the bottom of the rod 100 that forms the upper middle position of the guide rod for inserting the connecting post 101. The length of the entire guide rod can be adjusted by the insertion and cooperation of the connecting post 101 and the insertion hole 105.
[0030] In this embodiment, preferably, a screw hole 103 is provided through one side of the inner wall of the insertion hole 105, and a clamping bolt 106 is screwed into the screw hole 103. The clamping bolt 106 abuts against the side of the connecting post 101 inserted into the insertion hole 105, thereby achieving a tight connection of the connecting post 101.
[0031] In this embodiment, preferably, the two ends of the socket plate 200 are provided with grooves for the connecting post 101 to be inserted, and bolts are passed through the connection between the socket plate 200 and the connecting post 101, so as to realize the fixed connection between the end plate 102 and the guide rod.
[0032] In this embodiment, preferably, the rotation angle range of the stainless steel ball head 301 within the ball sleeve 300 is -15° to +15°.
[0033] In this embodiment, preferably, the longitudinal cross-sectional area of the socket plate 200 is smaller than that of the rod 100. The top of the pipeline inspection robot is not completely wrapped around the rod 100, but is wrapped in a semi-open manner, so that when it moves to the position of the socket plate 200, it can detach from the socket plate 200 and enter the pipeline for subsequent inspection. The shape of the socket plate 200 includes a columnar body and a cylinder.
[0034] Although embodiments of the present invention have been shown and described (see the detailed description above), it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A flexible descent auxiliary device for a CCTV pipeline inspection robot in a drop well environment, characterized in that: include At least two guide rods, each consisting of multiple rods (100); A socket plate (200) is connected to the bottom end of the guide rod, and the socket plate (200) is in contact with the pipe wall; A limiting element is located at the top of the guide rod.
2. The flexible descent auxiliary device for a CCTV pipeline inspection robot in a drop well environment according to claim 1, characterized in that: The rod body (100) forming the end of the guide rod is connected to the socket plate (200); a ball sleeve (300) is fixedly provided at the bottom end of the rod body (100) at the end position, and a stainless steel ball head (301) is provided inside the ball sleeve (300), and the stainless steel ball head (301) is fixedly connected to the socket plate (200).
3. The flexible descent auxiliary device for a CCTV pipeline inspection robot in a drop well environment according to claim 1, characterized in that: Each of the rods (100) has a connecting post (101) fixed at its top end, and the bottom end of the rod (100) that forms the upper middle position of the guide rod has an insertion hole (105) for the connecting post (101) to be inserted.
4. The flexible descent auxiliary device for a CCTV pipeline inspection robot in a drop well environment according to claim 3, characterized in that: A screw hole (103) is provided through one side of the inner wall of the insertion hole (105). A clamping bolt (106) is screwed into the screw hole (103). The clamping bolt (106) abuts against the side of the connecting post (101) inserted into the insertion hole (105).
5. The flexible descent auxiliary device for a CCTV pipeline inspection robot in a drop well environment according to claim 1, characterized in that: The socket plate (200) has grooves at both ends for the connecting post (101) to be inserted, and bolts pass through the connection between the socket plate (200) and the connecting post (101).
6. The flexible descent auxiliary device for a CCTV pipeline inspection robot in a drop well environment according to claim 2, characterized in that: The stainless steel ball head (301) rotates within the ball sleeve (300) at an angle ranging from -15° to +15°.
7. The flexible descent auxiliary device for a CCTV pipeline inspection robot in a drop well environment according to claim 1, characterized in that: The longitudinal cross-sectional area of the socket plate (200) is smaller than that of the rod (100), and the shape of the socket plate (200) includes columnar body and cylindrical body.