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Boat propeller and method for assembling the same

A technology for marine propellers and propellers, which is applied in the direction of rotating propellers, ship propulsion, ship parts, etc., can solve the problems of cumbersome, expensive propellers, lack of flexibility and adaptability, etc., and achieve the effect of reducing manufacturing costs

Active Publication Date: 2006-11-29
FB DESIGN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its disadvantage is that propellers of this type also do not have much flexibility in regard to the pitch angle of the hub, since the pitch angle is defined by the geometry of the dovetail portion of each blade, which The geometry is again determined during the design phase of the blade
Propellers with variable pitch blades are expensive, difficult to manufacture and require a suitable method to avoid corrosion of the regulators that control the pitch of the blades
Therefore, maintenance of such propellers is often expensive and cumbersome
Furthermore, such conventional propellers are not suitable for use as near-surface propellers because of their configuration such that the blades are susceptible to high bending loads due to turbulence in the incoming and outgoing water

Method used

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  • Boat propeller and method for assembling the same
  • Boat propeller and method for assembling the same
  • Boat propeller and method for assembling the same

Examples

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Embodiment Construction

[0033] figure 1 A propeller 1 according to the invention is shown, which consists of a hub 2 and a plurality of blades 3 . The blade 3 can be two or more and manufactured independently of the hub 2, and they are connected to the hub 2 during assembly. Accordingly, the hub 2 has a housing 4 adapted to receive a part of the blade 3 . best as figure 1 As shown, the X-axis of each blade coincides with the axis of the corresponding housing hole 4 . This has the advantage that the blades 3 can be oriented during assembly of the propeller 1 , ie they can be rotated about the X-axis before they are fixedly mounted.

[0034] Such as figure 1 The shown propeller hub 2 comprises a central part 21 and an outer ring 22 . The outer ring 22 is connected to the central part 21 of the hub by a plurality of spokes 23 . The paddle hub 2 is particularly light in weight compared with conventional paddle hubs of the same diameter. The blades 3 are fixed on the outer ring 22 of the hub 2 . T...

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Abstract

The present invention relates to a boat propeller and the assembly method therefor. The propeller comprises a hub and a plurality of separated blades to be integrally coupled with corresponding seats that are formed in the hub. Advantageously, during the assembly stage of the propeller, the blades can be orientated in the respective seats, each about its own axis. The method for assembling the propeller comprises the steps of orientating the blades according to a determined pitch angle before they are definitely fixed to the hub.

Description

technical field [0001] The invention relates to a marine propeller and an assembly method thereof. Background technique [0002] Typically, marine propellers include a plurality of blades integrally attached to a hub. The paddle hub is connected to the propeller shaft of the boat. The blades can be made in one piece with the hub, for example by cast steel or bronze. The traditional marine propeller is a whole with a definite geometric shape, so the pitch of the propeller relative to the hub has been determined during design. Therefore, in order to obtain propellers suitable for different ships, it is necessary to manufacture various propellers with different dimensions, blades with different geometric shapes, and different pitches, and the cost obviously increases. Production time also increases because the production process for propellers includes design patterning, casting, subsequent machining and refurbishment. [0003] Alternatively, the blades may be manufactured ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B63H1/20
CPCB63H3/002
Inventor F·布齐
Owner FB DESIGN
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