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Compact and high propulsion efficiency transmission for ship and ship equipped with same

A technology of transmission device and hull, which is applied in the direction of transmission device using synchronous propulsion components, propulsion transmission device, and propulsion power transmission, etc., can solve the problems of high cost and low propulsion efficiency.

Active Publication Date: 2020-06-12
FB DESIGN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the transmission is space-competitive compared to case 4E, and the cost is higher relative to ship 4E and ships 4B and 4C due to the complexity of the two bevel gear pairs equipped with the "tail engine", whereas less efficient propulsion

Method used

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  • Compact and high propulsion efficiency transmission for ship and ship equipped with same
  • Compact and high propulsion efficiency transmission for ship and ship equipped with same
  • Compact and high propulsion efficiency transmission for ship and ship equipped with same

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Embodiment Construction

[0027] Referring to these figures, a transmission for a ship according to the invention is shown at 10 .

[0028] The shaft 12 of the propeller is in fact a cylindrical element of constant section, with both ends engaged in the work. At the rear end, ie at the stern side, there is a tapered portion 23 of reduced diameter which makes the diameter transition from the largest diameter of the shaft to the diameter of the propeller hub. On this cone 23 , by means of a broaching process, so-called “ribs and grooves” 24 are obtained for the mounting of the propeller 15 , which in turn are secured by nuts 25 screwed to a threaded front core 26 .

[0029] At the front end of the shaft 12 , ie on the front side, there is another cone 27 for reducing the diameter of the shaft 12 . This cylindrical front 28 of the shaft 12 ends not with a flat front surface, but with a spherical cap 29 of radius R, the function of which will be explained below.

[0030] The cylindrical part 28 performs ...

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Abstract

Transmission (10) for boats of the type comprising a shaft (12) substantially arranged half inside and half outside the hull (13) and having a non-zero projection angle (21), the outer end of said shaft (12) being provided with a propulsion propeller (15); a coupling (17) between the inner end of said shaft (12) and the inverter (25) of the boat being provided; said coupling (17) comprising: a sleeve (34) flanged to said inverter (25) and internally equipped with a straight teeth toothing; - a second sleeve (30) externally provided with a spherical external toothing (31) and fitted on said shaft (12) at said inner end; wherein said spherical toothing (31) of said second sleeve (30) is meshed with the straight teeth toothing of said sleeve (34) flanged to said inverter (25) so as to allow the transmission of movement to said shaft (12) and to absorb alignment errors in the absence of Cardan or homokinetic joints between said shaft (12) and said inverter (25).

Description

technical field [0001] The invention relates to a transmission for a ship and to a ship equipped with such a transmission. [0002] In particular, the invention relates to a transmission for ships with fixed surfaces, ie non-steerable and non-adjustable surfaces during navigation, characterized by a simple and cost-effective structure as well as compactness and high propulsion efficiency. Background technique [0003] Figures 4A-4E Some different types of boats are shown. The unique strengths and weaknesses of each of them are clearly indicated from a simple analysis. On the other hand, it can be seen from this description how the invention allows all the different advantages of different types of boats to be combined in a unique embodiment avoiding their disadvantages. [0004] Figure 4A A conventional propeller shaft linear drive is shown, with the shaft penetrating through the hull directly into the bottom. This embodiment shows a high angle of inclination of the pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B63H23/32B63H23/34F16D3/18
CPCB63H23/321B63H23/34B63H2023/322B63H2023/325B63H2023/327F16D1/068F16D3/185F16D3/843
Inventor F·布齐
Owner FB DESIGN