Underwater fixed-height dragging device and dragging method for metal detector

Abstract

The invention discloses an underwater fixed-height dragging device of a metal detector in the technical field of underwater fixed-height dragging devices of metal detectors, and the other end of a fixed-height adjusting rod is fixedly assembled with a heavy dragging rod arranged on a seabed through a dragging rod drag hook. The other end of the dragging body pull rope is fixedly provided with a dragging body by fixing a dragging body pull hook, the dragging body is fixedly provided with a second floating body material, the dragging body frame structure is fixedly provided with a third floating body material, the dragging device comprises a water surface tugboat arranged on the sea surface, and the water surface tugboat is fixedly provided with a dragging cable pulley. A trailing cable on the finalizing device is wound and assembled on a trailing cable pulley, and an ultra-short baseline sonar is fixedly assembled at the bottom of the water surface tugboat, so the security threat of obstacles such as an underwater fishing net to an underwater towing carrier platform is reduced, the detection cost is reduced, the detection efficiency is improved, and the problem of a fixed-height towing method of a near-underwater towing body is effectively solved.

Description

technical field [0001] The invention relates to the technical field of an underwater height-fixing towing device for a metal detector, in particular to an underwater height-fixing towing device and a towing method for a metal detector. Background technique [0002] Underwater buried metal target detection involves applications in many fields, such as underwater buried oil and gas pipeline routing detection, submarine metal target detection, underwater metal evidence detection and other applications. Due to the relatively short detection distance of underwater electromagnetic detectors, metal detectors Underwater metal target detection must be close to the bottom, such as 1m. Such a short distance makes the underwater detector carrier platform have greater safety hazards during the detection process, such as fishing net hooks, collision with the bottom, The fixed height has large fluctuations, and under the condition of short-distance detection, the equipped optical observati...

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Problems solved by technology

[0002] Underwater buried metal target detection involves applications in many fields, such as underwater buried oil and gas pipeline routing detection, submarine metal target detection, underwater metal evidence detection and other applications. Due to the relatively short detection distance of underwater electromagnetic detectors, metal detectors Underwater metal target detection must be close to the bottom, such as 1m. Such a short distance makes the underwater detector carrier platform have greater safety hazards during the detection process, such as fishing net hooks, collision with the bottom, The fixed height has large fluctuations, and under the condition of short-distance detection, the equipped optical observation equipment can also observe the target more clearly, and realize simultaneous detection and image observation, which makes the existing towed device unsuitable for underwater electromagnetic detectors The towed body needs to be towed by a towed body that needs to sail at a fixed height on the seabed, and the navigation attitude and fixed height cannot maintain stability during towing, which has potential safety hazards. Therefore, we propose a metal detector underwater fixed height towing device and towing method

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