A launch and recovery device for a shipboard underwater test equipment in a navigation state

Abstract

The utility model discloses a kind of shipborne underwater test equipment's laying and recovery device under navigation state, comprising;Base, it is fixed on the surface of ship body;Outer tube, it is fixed on the outer wall of base;Inner tube, inner tube is movably threaded in outer tube, the aperture that can be achieved outer tube and inner tube relative mechanical lock by bolt fastener is opened between outer tube and inner tube, a pair of lifting lugs is fixed on the bottom end outer circumferential surface of inner tube;Test equipment cable tow rope, it is movably threaded in inner tube, it is used for binding the cable of test equipment;Inner tube tow rope, its bottom end is fixed on lifting lug, to provide traction for the lifting of inner tube.The device is composed of base, inner and outer sleeve and cable, structure is simple, convenient to install, all laying and recovery operation can be completed in deck, without relying on A frame, auxiliary dinghy or artificial launching, significantly reduce the complexity of operation and safety risk, improve operating efficiency.

Description

Technical Field

[0001] This utility model relates to the field of marine testing technology, specifically a deployment and recovery device for shipborne underwater testing equipment during navigation. Background Technology

[0002] In deep-sea tests, underwater equipment needs to be deployed in the water via the ship's hull and then retrieved. If the equipment enters the water during high-speed transit, it is highly susceptible to damage from ocean currents or cable breakage. In low-speed tests, the equipment must be fully deployed underwater to meet the test requirements.

[0003] Therefore, a deployment and recovery device that can balance the safety of high-speed navigation with the stability of low-speed testing is needed to achieve safe, fast and efficient operation of the equipment. Utility Model Content

[0004] The technical problem to be solved by this utility model is to address the shortcomings of the existing technology by providing a deployment and recovery device for shipborne underwater test equipment under navigation conditions based on the coordinated control of double-layer telescopic tubes and multiple cables.

[0005] The technical problem to be solved by this utility model is achieved through the following technical solution: a deployment and recovery device for shipborne underwater test equipment in navigation state, comprising; The base, which is fixed to the surface of the hull; The outer tube is fixed to the outer wall of the base; The inner tube is movably inserted inside the outer tube. An opening is provided between the outer tube and the inner tube, which can be mechanically locked relative to each other by bolt fasteners. A pair of lifting rings are fixed on the outer circumference of the bottom end of the inner tube. The cable traction rope for the test equipment is movably threaded inside the inner tube and is used to bind the cables of the test equipment. The inner tube traction cable is fixed at its bottom end to the lifting ring, thereby providing traction for the raising and lowering of the inner tube.

[0006] The technical problem to be solved by this utility model can also be achieved through the following technical solution: the outer wall of the base of the deployment and recovery device of the shipborne underwater test equipment in navigation state described above is fixedly provided with several mounting seats at intervals, and the outer tube is inserted and fixed on the top of the mounting seat.

[0007] The technical problem to be solved by this utility model can also be achieved through the following technical solution: the two lifting rings of the above-mentioned deployment and recovery device for a shipborne underwater test equipment in navigation state are symmetrically fixed on the outer circumferential surface of the bottom end of the inner tube.

[0008] Compared with the prior art, the beneficial technical effects of this utility model are: (1) The device consists of a base, inner and outer sleeves and cables. It has a simple structure and is easy to install. All deployment and recovery operations can be completed on the deck without relying on A-frames, auxiliary boats or manual launching, which significantly reduces the complexity of operation and safety risks and improves the efficiency of operation.

[0009] (2) By working together with the inner tube traction cable and the test equipment cable traction cable, the weight of the test equipment and the hydrodynamic load borne during navigation are reasonably distributed, avoiding damage or breakage of the equipment cable due to single-point force during the deployment and retrieval process, and greatly improving the safety of the equipment and cable.

[0010] (3) The inner and outer tubes can be mechanically locked by bolt fasteners after the through hole is made, which can accurately control the extension and retraction position of the inner tube. This design realizes the rapid and reliable switching between the two working conditions of "high-speed navigation" and "low-speed test" - the equipment can be completely retracted during navigation to avoid the impact of high-speed water flow, and it can be stably lowered to the predetermined depth during the test, ensuring the stability of data acquisition and equipment safety.

[0011] (4) The device is versatile and can be adapted to a variety of underwater test equipment, such as ADCP, CTD, and camera equipment. It solves the technical problem that it is difficult for ships to safely deploy and retrieve equipment while in navigation. It is especially suitable for the routine and efficient operation of deep-sea scientific research and scientific research vessels and has good prospects for promotion. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0013] Reference numerals: 1. Base; 2. Outer tube; 3. Mounting seat; 4. Inner tube; 5. Lifting ring; 6. Cable pulling rope for test equipment; 7. Cable pulling rope for inner tube; 8. Opening. Detailed Implementation

[0014] The specific technical solutions of this utility model are further described below with reference to the accompanying drawings, so as to enable those skilled in the art to further understand this utility model, without constituting a limitation on its rights.

[0015] Example 1, referring to Figure 1 A deployment and recovery device for a shipborne underwater test equipment in navigation mode, comprising: Base 1, which is fixed to the surface of the hull, is formed into a roughly square plate structure and is welded to the surface of the hull. The outer tube 2 is a round tube, which is fixed on the outer wall of the base 1. Several mounting seats 3 are fixedly provided at intervals on the outer wall of the base 1. The mounting seats 3 are formed into a roughly square structure. Their size and quantity can be selected according to the usage requirements. For example, four are used. The outer tube 2 is inserted and fixed on the top of the mounting seat 3. The inner tube 4 is a round tube that is movably inserted inside the outer tube 2. An opening 8 is provided between the outer tube 2 and the inner tube 4, which can be mechanically locked relative to each other by bolt fasteners. The position, number and diameter of the opening 8 can be selected according to the usage requirements. The opening 8 is a circular through hole. A pair of lifting rings 5 ​​are fixed on the outer circumference of the bottom end of the inner tube 4. The two lifting rings 5 ​​are symmetrically fixed on the outer circumference of the bottom end of the inner tube 4, which can bind and fix the shipborne underwater test equipment to the lower end of the inner tube 4. The test equipment cable traction cable 6 is movably threaded inside the inner tube 4. It is used to bind the test equipment cable to prevent the cable from getting tangled or tangled, or from being suspended due to its own weight during the retrieval of the inner tube 4, which would cause the cable to be damaged. In other words, the test equipment cable traction cable 6 is simultaneously retracted and extended during the raising and lowering of the inner tube 4. The inner tube traction cable 7 is fixed at its bottom end to the lifting ring 5, thereby providing traction force for the lifting and lowering of the inner tube 4. When a pair of lifting rings 5 ​​are used, there are also two inner tube traction cables 7. The workers pull the inner tube traction cables 7 by hand to raise and lower the inner tube 4.

[0016] The deployment and recovery device for shipborne underwater testing equipment in navigation mode in Example 1 has the following operating steps: (1) Step 1: First, fix the base 1 to the flat surface of the hull side; fix the outer tube 2 to the mounting seat 3 of the base 1; movably insert the inner tube 4 into the outer tube 2; tie the bottom end of the inner tube traction rope to the hanging ring 5 at the bottom end of the inner tube 4; movably insert the test equipment cable traction rope into the inner tube 4.

[0017] (2) Step 2: Secure the underwater test equipment to the bottom of the inner tube 4 and fix it together with the test equipment cable traction rope using clamps or ropes; lift the inner tube 4 completely using the inner tube traction rope so that it is retracted into the outer tube 2; use bolts to fasten the corresponding openings 8 on the outer tube 2 and the inner tube 4 to achieve mechanical locking; fix all the cables on the ship's side to ensure that the equipment and the inner tube 4 are safely retracted and locked during the ship's high-speed transit to avoid being impacted by the water flow.

[0018] (3) Step 3: After the ship arrives at the test area and reduces its speed, for example to 6-8 knots, release the mechanical lock of the bolt fasteners on the inner and outer tubes 2; simultaneously and slowly release the inner tube towing rope and the test equipment cable towing rope, so that the inner tube 4 carrying the underwater test equipment is smoothly lowered along the outer tube 2. When the equipment reaches the predetermined working depth, use the bolt fasteners again to pass through the openings 8 on the inner tube 4 and the outer tube 2, thereby locking the inner tube 4 in the extended position.

[0019] (4) Step 4: After the test is completed, release the mechanical lock between the inner tube 4 and the outer tube 2, release the inner tube traction rope and the test equipment cable traction rope until the inner tube 4 is completely released into the water, and then retrieve the inner tube traction rope to retrieve the underwater test equipment from bottom to top until it is retrieved onto the deck.

Claims

1. A deployment and recovery device for shipborne underwater testing equipment in a navigation state, characterized in that: include; The base, which is fixed to the surface of the hull; The outer tube is fixed to the outer wall of the base; The inner tube is movably inserted inside the outer tube. An opening is provided between the outer tube and the inner tube, which can be mechanically locked relative to each other by bolt fasteners. A pair of lifting rings are fixed on the outer circumference of the bottom end of the inner tube. The cable traction rope for the test equipment is movably threaded inside the inner tube and is used to bind the cables of the test equipment. The inner tube traction cable has its bottom end fixed to the lifting ring, thereby providing traction for the raising and lowering of the inner tube.

2. The deployment and recovery device for a shipborne underwater testing equipment in navigation state according to claim 1, characterized in that: The outer wall of the base is fixedly provided with several mounting seats at intervals, and the outer tube is inserted and fixed to the top of the mounting seats.

3. The deployment and recovery device for a shipborne underwater testing equipment in navigation state according to claim 1, characterized in that: The two lifting rings are symmetrically fixed on the outer circumference of the bottom end of the inner tube.

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