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Propulsion shaft system grounding structure

A grounding structure and shafting technology, applied in the direction of water action propulsion elements, transmission devices with synchronous propulsion components, connections, etc., can solve the problems of difficult installation, hidden dangers to ship safety, inconvenient disassembly, etc., and achieve easy installation and disassembly. The effect of eliminating safety hazards and avoiding adjustment difficulties

Inactive Publication Date: 2020-03-20
杨海艳
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This brings difficulties in installation. The former needs to set the copper ring before the shafting is installed. It is very inconvenient to adjust the position of the copper ring.
The latter needs to be heated during installation, which brings safety hazards in the process of ship construction.
[0007] Due to the above reasons, the above two types of shafting grounding structures are also inconvenient in disassembly

Method used

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  • Propulsion shaft system grounding structure

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Embodiment Construction

[0014] Such as figure 1 As shown, it is a schematic diagram of the grounding structure of the marine propulsion shafting system of the present invention. The slip ring 3 is composed of two semicircular slip rings, and the material of the two semicircular slip rings is copper. Two semicircular slip rings are installed on the outer diameter of the propeller shaft 4 of the hull, and there are gaps respectively at the junction of the two semicircular slip rings, and rubber pads 5 are placed in the gaps, and the two semicircular slip rings There are holes processed on both ends of the two semicircular slip rings connected by bolts. The connected slip ring 3 is fastened to the propeller shaft 4 . It is very convenient to assemble, disassemble and adjust like this. The monitoring brush 1 and the grounding brush 2 are placed on the outer diameter of the slip ring 3 and are in contact with the slip ring 3 . The monitoring brush 1 is connected with the potential measurement box, and ...

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Abstract

The invention discloses a marine propeller shaft system grounding structure, which comprises a monitoring electric brush, a grounding electric brush and a slip ring assembly, and is characterized in that the slip ring assembly is arranged on the outer diameter of a propeller shaft of a ship body and is in contact with the propeller shaft. Compared with the prior art, the slip ring structure is convenient to mount and demount, adjustment difficulty caused by mounting is avoided, and potential safety hazards caused by complicated mounting are eliminated.

Description

technical field [0001] The invention relates to a ship propulsion system, in particular to a grounding device for ship propulsion shafting. Background technique [0002] Due to the different materials of the propeller and the hull, and the increased eddy current here, a small current will be excited on the contact surface of dissimilar metals, which will cause corrosion. [0003] When the propeller is stationary, the journal of the shafting system and the intermediate bearing and the output bearing of the gearbox (or the main bearing of the main engine) are in contact with dissimilar metals to form a conductive path between the propeller and the hull, but they are basically at the same potential , will not cause corrosion. [0004] However, as the shafting turns, the bearing lubricant between the journal and the bearing forms a lubricating oil film, which acts as a terminating high-resistance layer, effectively insulating the propeller from the hull structure. As the prope...

Claims

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Application Information

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IPC IPC(8): B63H23/34H01R39/08H01R4/64
CPCB63H23/34H01R4/643H01R39/08
Inventor 杨海艳刘丽媛
Owner 杨海艳