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A retractable thruster, a swimming vessel and a method for retracting and ejecting a propeller of the retractable thruster

A propeller and propeller technology, applied in the direction of rotating propellers, rotary propellers, propulsion components, etc., to achieve maintenance cost savings, high operational reliability, and simple mechanisms

Inactive Publication Date: 2017-08-18
ROLLS ROYCE PLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In ice conditions, when the propeller of the retractable thruster is in its lowest position, there is a risk of loose ice filling the bottom shaft in such a way that retraction of the propeller is not possible due to ice blocking the lifting operation

Method used

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  • A retractable thruster, a swimming vessel and a method for retracting and ejecting a propeller of the retractable thruster
  • A retractable thruster, a swimming vessel and a method for retracting and ejecting a propeller of the retractable thruster
  • A retractable thruster, a swimming vessel and a method for retracting and ejecting a propeller of the retractable thruster

Examples

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Embodiment Construction

[0058] Reference will now be made in detail to embodiments, examples of which are illustrated in the accompanying drawings.

[0059] A retractable propeller is a propeller in which the propeller of the propeller can be retracted substantially inside the hull of the swimming boat. In one embodiment, the retractable pusher may be adapted for horizontal drive by an automatic drive shaft breakout system or for vertical drive. In one embodiment, the raising and lowering of the propeller can be actuated by a remote control system, for example by a button on the bridge of the swimming boat. In one embodiment, the engagement of the drive shaft coupling for the retractable pusher may be automatic.

[0060] Figure 1A is a side view of an embodiment of a retractable pusher in an ejected position. Figure 1B is a front side view of an embodiment of a retractable pusher in an ejected position. The retractable propeller comprises a propeller 3 comprising a lower gear 301 inside a lower ...

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PUM

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Abstract

A retractable thruster for a swimming vessel is provided, wherein the retractable thruster includes a propeller and a lifting and lowering arrangement which is configured to vertically move the propeller between a retracted position and an ejected position. In the retracted position the propeller is substantially inside a bottom well of the swimming vessel and in the ejected position the propeller is substantially outside the bottom well. The retractable thruster includes a water-permeable protective element configured to be located inside the bottom well above the propeller and configured to vertically move with the propeller. In the ejected position the water-permeable protective element is configured to substantially prevent loose ice from drifting inside the bottom well through the water-permeable protective element and when the propeller is moved from the retracted position to the ejected position, the water-permeable protective element is configured to push ice out of the bottom well.

Description

technical field [0001] The retractable propeller is configured to be used in a swimming vessel, for example in a marine vessel, sea vessel, fishing vessel, naval vessel, luxury liner, tanker, tugboat, ferry or similar applications. Background technique [0002] Retractable propellers are commonly used as auxiliary propulsion for swimming boats. In naval vessels, for example, retractable thrusters could be used to provide extra thrust or a so-called emergency return feature. [0003] A retractable thruster enables the propeller to be retracted into the bottom well of the swim boat's hull. The drag of the swimming boat is reduced when the propeller is not in use and is retracted. Additionally, the retractable thrusters can be retracted when the swimming boat enters shallow water. [0004] In ice conditions, when the propeller of the retractable propeller is in its lowest position, there is a risk of loose ice filling the bottom well in such a way that retraction of the prop...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B63H5/125
CPCB63H5/125B63H5/1252B63B2211/06B63H25/42B63H2025/425B63B3/14F15B15/14F15B2211/7053B63H1/14B63H5/15B63H2005/1254
Inventor 卡尔·埃米尔·阿维德·拉姆斯特伊尔卡·埃里克·维尔曼
Owner ROLLS ROYCE PLC
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