Semi-water long tunnel detection unmanned dragging ship
By designing an unmanned towed vessel for semi-water long tunnel inspection, the problem of poor environmental adaptability of existing inspection devices in semi-water long tunnels has been solved. This enables efficient and stable inspection in complex water flow environments, improving the accuracy of inspection data and ease of operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-10
- Publication Date
- 2026-03-10
AI Technical Summary
Existing camera and sonar detection devices lack specially designed, efficient, stable, and easy-to-operate mounting devices in long tunnels with semi-water conditions and rapid water flow, resulting in poor adaptability to the detection environment, insufficient stability, and complex operation.
A semi-submersible long tunnel inspection unmanned towed vessel was designed, including a pontoon support structure, an electronic cabin structure, a camera and lighting bracket, and a sonar bracket. The pontoon support structure and high-strength materials are used, the bracket structure is stable, the pontoon supports a large weight and has a certain load-bearing capacity, the camera and sonar equipment are fixed by a sliding rail structure, and the overall structure is detachable, which is convenient for transportation and assembly.
It achieves flexibility, stability, versatility, efficiency, and safety in complex water flow environments, improves the accuracy of detection data, reduces operational difficulty, is highly adaptable, and is suitable for space-constrained operating environments.
Smart Images

Figure CN223982646U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of tunnel inspection technology, and in particular to an unmanned towing vessel for detecting surface defects in long tunnels in semi-water conditions, suitable for tunnel scenarios with complex water flow environments where it is difficult for personnel to work directly. Background Technology
[0002] The geological conditions in areas where tunnels are located are often complex, and the construction environment is relatively harsh. If the construction process is not standardized, the construction procedures lack rigor, and the supervision is insufficient, quality problems such as concrete spalling, exposed reinforcement, and water leakage can easily occur after long-term water flow impact. Video and sonar inspection, as efficient inspection methods, are widely used in the current field of tunnel quality inspection. However, existing video and sonar inspection operations often lack specially designed, efficient, stable, and easy-to-operate mounting devices in long tunnels with semi-submerged conditions and rapid water flow.
[0003] In work environments inaccessible to personnel or machinery, the traditional method involves inspectors operating underwater robots. This method has several drawbacks: First, it requires stringent operating conditions, necessitating testing in still or near-still water. Second, the testing environment is spatially limited, making it difficult for equipment or accessories to reach the work surface, thus restricting the operational method and the scope of the work. Utility Model Content
[0004] The present invention aims to solve the problems of poor environmental adaptability, insufficient stability, and complex operation of existing detection devices, and provides a robust and stable unmanned towed vessel for detecting semi-submersible tunnels.
[0005] This utility model discloses an unmanned towing vessel for semi-submersible long tunnel inspection, characterized in that the unmanned towing vessel includes a pontoon support structure, an electronic cabin structure, a camera and lighting bracket, and a sonar bracket. The electronic cabin structure is mounted on the pontoon support structure, the camera and lighting bracket is located on the side of the electronic cabin structure, and the sonar bracket is located at the bottom of the electronic cabin structure, wherein:
[0006] The pontoon support structure includes pontoons symmetrically arranged on the left and right, support connectors, connecting structural rods, anti-collision rubber wheels, and connecting rope buckles. The two pontoons are arranged in parallel. There are two sets of support connectors, one set of which is located at the top of the pontoon and the other set of which is located at the bottom of the pontoon. Several connecting structural rods are divided into two groups and placed horizontally and fixed on the two pontoons. One set of connecting structural rods is fixedly connected to the support connector at the top of the pontoon and the other set of connecting structural rods is fixedly connected to the support connector at the bottom of the pontoon, forming the hull skeleton.
[0007] The electronic cabin structure is set between two floats and placed on the connecting structure rod at the bottom of the floats. The electronic cabin structure is rigidly connected to the connecting structure rod.
[0008] The camera light bracket is fixed to the connecting structure rod by bolts. The camera light bracket is a slide rail structure. The slide rail is equipped with camera clips and light clips, which slide along the slide rail.
[0009] The sonar support is fixed to the connecting structure rod at the bottom of the float.
[0010] Both ends of the connecting structure rod at the front end and the top of the rear end of the pontoon are equipped with anti-collision rubber wheels, and the outer width of the anti-collision rubber wheels is greater than the width of the hull frame.
[0011] The end of the pontoon is equipped with a connecting rope buckle, which is connected to the winch via a steel rope.
[0012] The electronic cabin structure has a built-in power supply and data storage unit. The inner wall of the electronic cabin structure is also wrapped with shock-absorbing pads. The power supply and data storage unit is placed on the shock-absorbing pads at the bottom. The shock-absorbing design is used to improve data security.
[0013] The slide rail is equipped with a limiting component, which is a limiting block or a screw hole. The limiting block is set inside the slide rail, and the screw hole is set on the side wall of the slide rail. The sliding position of the camera clip and the light clip is limited by installing bolts in the limiting block or the screw hole.
[0014] The sonar support is also equipped with a protective cover to prevent debris at the bottom from damaging the sonar.
[0015] The supporting connecting conversion component is rigidly fixed to the pontoon by welding to ensure the overall structural stability, while other components are connected by bolts for easy disassembly and transportation.
[0016] The unmanned towing vessel for semi-submersible tunnel inspection of this utility model has the following significant advantages:
[0017] 1. Flexibility: The unmanned towing vessel is completely disassembled and mostly connected by movable joints. The main connection method is a uniform type of connecting bolts. All components are very easy to transport and assemble after disassembly. It has strong adaptability and mobility for working environments with limited space.
[0018] 2. Stability: The pontoon support structure and high-strength material design can effectively adapt to various complex terrains, ensuring that the unmanned towed vessel does not fall apart or sink during the inspection process, thereby improving the accuracy of the inspection data;
[0019] 3. Versatility: The support structure is stable, and the floats support a large weight, providing a certain load-bearing capacity; it can be fine-tuned to adapt to different equipment models.
[0020] 4. High efficiency: The unmanned towing vessel operates relatively stably, and the operating speed is matched with the sonar scanning speed and camera speed by human control; with the upgrading of equipment, the operating speed can be adjusted according to the characteristics of the equipment to achieve high-efficiency operation.
[0021] 5. Safety: The unmanned towed vessel's overall structure is made of lightweight steel, which has good rigidity and toughness. The sonar and camera lights are well protected. The support frame has a good center of gravity design, which will not cause overturning and provides good safety for the equipment.
[0022] 6. Operability: After the unmanned towing vessel is assembled and the sonar and camera lights are debugged, it only needs to be towed by a winch during operation. No adjustments are required during operation, and the operation requirements for operators are extremely low. Attached Figure Description
[0023] Figure 1 This is a schematic diagram of the bottom structure of this utility model.
[0024] Figure 2 This is a side view of the present invention.
[0025] The components include: 1. Float; 2. Electronic cabin; 3. Camera and light bracket; 4. Sonar bracket; 5. Connecting structure rod; 6. Support connector; 7. Handle; 8. Anti-collision rubber wheel; 9. Connecting rope buckle. Detailed Implementation
[0026] Example 1: A semi-submersible tunnel inspection unmanned towed vessel includes a pontoon support structure, an electronic cabin structure, a camera and lighting bracket, and a sonar bracket. The electronic cabin structure is mounted on the pontoon support structure, the camera and lighting bracket is located on the side of the electronic cabin structure, and the sonar bracket is located at the bottom of the electronic cabin structure.
[0027] The pontoon support structure includes pontoons symmetrically arranged on the left and right, support connectors, connecting structural rods, anti-collision rubber wheels, and connecting rope buckles. The two pontoons are arranged in parallel. There are two sets of support connectors, one set of which is located at the top of the pontoon and the other set of which is located at the bottom of the pontoon. Several connecting structural rods are divided into two groups and placed horizontally and fixed on the two pontoons. One set of connecting structural rods is fixedly connected to the support connector at the top of the pontoon and the other set of connecting structural rods is fixedly connected to the support connector at the bottom of the pontoon, forming the hull skeleton.
[0028] The electronic cabin structure is set between two floats and placed on the connecting structure rod at the bottom of the floats. The electronic cabin structure is rigidly connected to the connecting structure rod.
[0029] The camera light bracket is fixed to the connecting structure rod by bolts. The camera light bracket is a slide rail structure. The slide rail is equipped with camera clips and light clips, which slide along the slide rail.
[0030] The sonar support is fixed to the connecting structure rod at the bottom of the float.
[0031] Both ends of the connecting structural rod at the front and rear of the pontoon are equipped with anti-collision rubber wheels, the outer width of which is greater than the width of the hull frame. Connecting rope buckles are located at the ends of the pontoons, and these buckles are connected to the winch via steel cables.
[0032] The electronic cabin structure has built-in power and data storage units. The inner wall of the electronic cabin structure is also wrapped with shock-absorbing pads. The power and data storage units are placed on the shock-absorbing pads at the bottom. The shock-absorbing design improves data security.
[0033] The slide rail is equipped with limiting components, which can be either limiting blocks or screw holes. The limiting blocks are located inside the slide rail, while the screw holes are located on the side wall of the slide rail. Bolts are installed in the limiting blocks or screw holes to restrict the sliding position of the camera and light clips. A protective cover is also provided on the sonar bracket to prevent damage to the sonar from debris at the bottom. The support connection conversion component is rigidly fixed to the float by welding to ensure the overall structural stability. Other components are connected by bolts for easy disassembly and transportation.
[0034] Assembly steps: Weld and fix the pontoons to the support connecting conversion parts, and connect the pontoon connecting structural rods with bolts to form the hull frame; fix the electronic cabin structure to the pontoon connecting structural rods; install the camera and light brackets on the top connecting structural rods, and mount the camera and light equipment; fix the sonar brackets to the bottom connecting structural rods, and install the sonar equipment.
[0035] Operational process: The towing vessel is moved along the direction of the water flow in the tunnel by pulling the connecting rope using a winch; data on the inner surface of the tunnel is collected synchronously using cameras and sonar and transmitted in real time to the electronic compartment for storage; collision buffering rubber wheels are used to ensure equipment safety.
Claims
1. A semi-water long tunnel detection unmanned tug boat, characterized in that The unmanned tugboat comprises a buoy support structure, an electronic cabin structure, a camera light support and a sonar support, the electronic cabin structure is installed on the buoy support structure, the camera light support is arranged on the side of the electronic cabin structure, and the sonar support is arranged on the lower part of the electronic cabin structure. The buoy support structure comprises two symmetrically arranged buoys, support connecting pieces, connecting structure rods, anti-collision rubber wheels and connecting rope buckles, the two buoys are arranged in parallel, the support connecting pieces are divided into two groups, one group of the support connecting pieces is arranged on the top of the buoy, and the other group of the support connecting pieces is arranged on the lower part of the buoy, a plurality of connecting structure rods are divided into two groups and are fixed on the two buoys in a horizontal manner, one group of the connecting structure rods is fixedly connected with the support connecting pieces on the top of the buoy, and the other group of the connecting structure rods is fixedly connected with the support connecting pieces on the lower part of the buoy, so as to form a hull skeleton; The electronic cabin structure is arranged between the two buoys and is placed on the connecting structure rods on the lower part of the buoys, and the electronic cabin structure is rigidly connected with the connecting structure rods; The camera light support is fixed on the connecting structure rods by bolts, the camera light support is a slide rail structure, a camera buckle and a light buckle are arranged in the slide rail, and the camera buckle and the light buckle slide along the slide rail; The sonar support is fixed on the connecting structure rods on the lower part of the buoy.
2. The semi-water long tunnel detection unmanned tug-boat according to claim 1, wherein The connecting structure rods at the two ends of the top of the front end and the rear end of the buoy are provided with anti-collision rubber wheels, and the outer width of the anti-collision rubber wheels is greater than the width of the hull skeleton.
3. The semi-water long tunnel detection unmanned tug-boat according to claim 1, wherein The connecting rope buckles are arranged at the ends of the buoy and are connected with a winch through steel ropes.
4. The semi-water long tunnel detection unmanned tug-boat according to claim 1, wherein The electronic cabin structure is internally provided with a power supply and a data storage unit, and the inner wall of the electronic cabin structure is further wrapped with a shock-absorbing pad, and the power supply and the data storage unit are placed on the shock-absorbing pad at the bottom.
5. The semi-water long tunnel detection unmanned towed ship according to claim 1, characterized in that Limiting pieces are arranged in the slide rail, the limiting pieces are limiting blocks or screw holes, the limiting blocks are arranged in the slide rail, and the screw holes are arranged on the side walls of the slide rail, and the sliding positions of the camera buckle and the light buckle are limited by the limiting blocks or bolts installed in the screw holes.
6. The semi-water long tunnel detection unmanned towed ship according to claim 1, characterized in that The sonar support is further provided with a protective cover.