Helix underwater positioning device

Abstract

This invention is an apparatus offering localization for working submerged device under water. Its function is to fix the working submerged device and equipment in sea floor in order to maintain underwater facilities. This is a kind of spiral underwater positioning apparatus which appearance resumes a cylindrical assembly, the low-speed large torsion hydraulic pressure motor, linking to the upper of the drive shaft, is seated on the top of the spiral guiding bush which is cylindrical and bushes the drive shaft and spiral anchor body. The internal thread is designed in the interior wall of the spiral guiding bush, the spiral anchor body is a T shaped cylindrical object and on its top is designed external thread which meshes the internal thread of the spiral guiding bush. On the drive shaft there are drive keys that links with the spiral anchor body. The operation principle of this invention is that the hydraulic pressure motor drives the spiral anchor body to rotate into the stratum and fasten the working submerged device to the sea floor through the axial motion that takes place when the meshed threads of the spiral guiding bush rotates the spiral anchor body .

Description

Technical field: [0001] The invention is a positioning device suitable for underwater working submersibles and equipment. technical background: [0002] The purpose of the invention is to provide an accurate positioning device for the underwater operation submersible when it is in the working state. Its function is to make the underwater operation submersible overcome the influence of the water flow, fix the submersible on the seabed, so as to perform maintenance operations on underwater facilities such as submarine pipelines, cables or other facilities. There are many commonly used underwater positioning methods, but they can only be applied to the positioning of ships working on the water surface, and there is no mechanical positioning device for submersibles and underwater operating equipment that work underwater, and the submersibles cannot be fixed underwater. . The reason is that the volume of the underwater operation submersible is relatively small, while the tradit...

AI Technical Summary

Problems solved by technology

However, neither anchors, anti-slide piles nor satellite dynamic positioning systems can be used to provide underwater positioning for submersibles working underwater. , to reduce the volume as much as possible to reduce the force-bearing area; while the anchor system of the surface ship and the anti-slide pile system of the drilling platform or the satellite dynamic positioning system are complex in structure and bulky, and cannot be loaded into the submersible

In addition, due to the small size and light weight of the submersible for underwater operations, and because of the buoyancy of seawater, it cannot provide effective gravity for the insertion of anti-slide piles. insert

Because of this, submersibles for underwater operations usually do not have mechanical positioning devices, which limits their use conditions

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