Portable electric side-scan sonar broadside support capable of reducing stress of cross bar

Abstract

The invention relates to a portable electric side-scan sonar broadside support capable of reducing the stress of a cross bar. The device comprises a fixing device, wherein the fixing device is fixed on a bollard on the ship side, a worm gear and a worm which are meshed together are arranged in a fixing box body, a motor-driven steel wire rope is wound on a take-up shaft on an output shaft of a hoisting motor, and the motor-driven steel wire rope passes through a positioning ring and a fixed pulley and then penetrates through a limiting ring to be connected with sonar. The device has functionsof portability, detachability and easiness in mounting, the requirement of the device on the loading space is reduced, and difficulty of achievement application is reduced, purposes of saving time andlabor and protecting personnel, instruments and equipment are achieved, the ship structure is fully utilized, and problems that the side space of a ship in the prior art is narrow, and side draggingsonar fish dragging is not easy to achieve are effectively solved, the function that a plurality of ships can berth and berth at a wharf side by side can be achieved without dismounting the broadsidesupport, in addition, the hoisting motor for hoisting the sonar is installed on the support, the stress condition of a cross rod can be reduced, and the service life is prolonged.

Description

technical field [0001] The invention relates to the field of marine surveying and mapping, in particular to a portable electric side-scanning sonar side support that can reduce the stress on a cross bar. Background technique [0002] Side-scan sonar is one of the necessary equipment to accomplish the goal. It can form topographic information through the backscattering of echoes on the seabed, and form the final seabed image information. It is also an important way of seabed imaging. During side-scan sonar sea-sweeping operations, sonar towing fish is divided into two soft-connected operation methods: tail towing and side towing. The shortcoming of tail tow operation mode is: (1) the towing fish cable of release is longer (about 30~50 meters), and it takes longer to retract and release towing fish. During the shallow water survey, the towfish needs to be stowed to prevent the towfish from touching the bottom when the survey ship turns around, and the towfish should be put do...

AI Technical Summary

Problems solved by technology

The disadvantages of the tail tow operation method are: (1) The released tow fish cable is long (about 30-50 meters), and it takes a long time to retract and release the tow fish

In this way, it is necessary to frequently release the tow fish every day

(2) The closer the towfish is to the seabed, the higher the risk of being dropped by unknown objects in the sea

This mode generally requires 3 to 4 staff members, because the towed fish is heavy (for example, the weight of the Edgetech 4200 towed fish is about 50kg), the ship shakes during the operation, the working space on both sides of the ship's side of the two measuring ships is narrow, and the distance between the ship's side railing and the sea surface is high (about 3 meters) and other factors cause the staff to lean out of the ship's side during the towing and releasing process, which is dangerous. At the same time, the towing equipment is easy to collide with the ship's side and hull during the operation, which will easily lead to the towing fish. array and empennage damage

[0005] If the welding hangers are modified on the sides of the two measuring ships, the space of the two measuring ships is narrow and difficult to realize, and the plan of modifying the space structure of the ship’s sides is not feasible due to the difficulty and easy violation of ship inspection regulations

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