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A lifting spindle arrangement for a retractable thruster unit of a marine vessel

A technology of main shaft device and thruster, which is applied in the directions of ship propulsion, transmission device, steering device, etc., can solve problems such as buckling, and achieve the effect of reducing cost

Active Publication Date: 2019-07-26
WARTSILA NETHERLANDS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In practice, this connection means that although the thruster is almost always subject to a force on the main shaft, it is itself due to gravity or buoyancy or as a result of the action of the main shaft, at the end of the main shaft where the thruster is to which the force is directed The main shaft section between is subject to compression and potential risk of buckling

Method used

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  • A lifting spindle arrangement for a retractable thruster unit of a marine vessel
  • A lifting spindle arrangement for a retractable thruster unit of a marine vessel
  • A lifting spindle arrangement for a retractable thruster unit of a marine vessel

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Embodiment Construction

[0035] figure 1 illustrates an isometric view of a retractable thruster unit according to a preferred embodiment of the invention, and figure 2 A vertical side view of the retractable thruster unit is illustrated. Reference number 2 generally refers to a lower support structure arranged in connection with or as part of the hull of a vessel, and reference number 4 refers to an upper support structure arranged in connection with or part of the hull. figure 1 with figure 2 The illustrated thruster unit 10 includes an electric motor 12 disposed on a motor mount 14; a drive shaft housing 16 surrounding a drive shaft (not shown) that is driven from the electric motor 12. Or the motor mount 14 extends to a pod (not shown), which is provided to the lower end of the drive shaft housing 16 . The drive shaft housing 16 is a tube filled with either air or oil, which gives the housing supporting properties that sometimes cause the thruster unit (i.e., tends to collapse on itself when ...

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Abstract

The present invention discusses a lifting spindle arrangement for a retractable thruster unit of a marine vessel, the lifting spindle (28) having a lower end and an upper end and being supported at its lower end to a lower support structure (2) by means of a lower support assembly (40) and at its upper end to an upper support structure (4) by means of an upper support assembly (70), wherein the lifting spindle (28) is provided at its both ends with a locking member for such a connection to the support structures (2, 4) that each end of the lifting spindle (28) may freely move in an axial direction away from the opposite end of the lifting spindle (28).

Description

technical field [0001] The invention relates to a lifting spindle arrangement for a retractable thruster unit according to the preamble of claim 1 . Background technique [0002] Ships use various propulsion systems or units. The main propulsion unit is usually arranged in the stern of the ship. The main propulsion unit may be a stationary propeller arrangement generating thrust in the longitudinal direction of the vessel, or it may be a pod or thruster, ie a propeller arrangement which can rotate about a vertical axis. [0003] The ship also has other propulsion means which are used mainly when maneuvering the ship in harbour, for example. One such propulsion device is the tunnel thruster, which can be used both at the bow and at the stern. Tunnel thrusters are arranged in horizontal tunnels which extend through the hull of the vessel transversely to the longitudinal direction of the vessel, the tunnel thrusters being used for assisting in moving the whole vessel or movi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B63H5/125
CPCB63H5/125B63H2025/425B63H2025/465F16H25/2015F16H2025/2031F16H2025/2037
Inventor J·范·德·桑德
Owner WARTSILA NETHERLANDS