Propeller power transmission device for 1-engine, 2-shaft vessel

a technology of power transmission device and propeller, which is applied in the direction of propulsive elements, vessel construction, marine propulsion, etc., can solve the problems of increasing cost, reducing workability, and requiring a larger number of components, so as to reduce the number of components, improve the mounting workability, and reduce the cost

Inactive Publication Date: 2009-01-29
KANZAKI KOKYUKOKI MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0019]According to the present invention, a clutch for inverting the rotation of a propeller shaft is integrated into a mechanism for dividing power into right and left propeller shafts. This arrangement reduces the number of components and improves mounting workability, thereby reducing costs.

Problems solved by technology

However, this structure requires a larger number of components, and also requires separate attachment of plural mechanisms to the vessel.
This has resulted in the problems of decreased workability and increased cost.

Method used

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  • Propeller power transmission device for 1-engine, 2-shaft vessel
  • Propeller power transmission device for 1-engine, 2-shaft vessel
  • Propeller power transmission device for 1-engine, 2-shaft vessel

Examples

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first embodiment

[0042]The following explains a first embodiment of a propeller power transmission device for a 1-engine, 2-shaft vessel according to the present invention, with reference to FIGS. 1 to 7. Throughout the figures, like components will be identified by like reference numerals.

[0043]FIG. 1 is a plan view schematically showing a vessel 2 equipped with a propeller power transmission device 1 for a 1-engine, 2-shaft vessel. FIG. 2 is a lateral view of the plan view of FIG. 1. As shown therein, a pair of propeller shafts 5 and 6 project respectively from the right and left sides of the gear case 4 provided in the front side of the engine 3. The edges of the propeller shafts 5 and 6 extend outward beyond the aft end of the vessel. As shown by the dashed line of FIGS. 1 and 2, the gear case 4 can be provided on the back side of the engine 3.

[0044]FIG. 3 is a cross-sectional view, taken along the line III-III in FIG. 1 and FIG. 2. FIG. 4 is a cross-sectional view developed along the line IV-IV...

second embodiment

[0053]With reference to FIGS. 8 to 10, the following explains a propeller power transmission device for a 1-engine, 2-shaft vessel according to a second embodiment of the present invention. FIG. 8 is a plan view schematically showing a vessel 2 equipped with a propeller power transmission device. FIG. 9 is a lateral view of the plan view of FIG. 8. As with FIG. 4, FIG. 10 is an expanded cross-sectional view schematically showing the propeller power transmission device with an engine.

[0054]A propeller power transmission device 1a according to the second embodiment comprises an input shaft 9a combined with a drive shaft 7 of an engine 3 via a coupling 8 made of an elastic joint; a pair of right and left output shafts 12a and 13a combined with the right and left propeller shafts 5 and 6 via couplings 10 and 11, respectively; an intermediate shaft 80 extending orthogonally to the input shaft 9a; a driving bevel gear 81 fixed to the input shaft 9a; a pair of driven bevel gears 82 and 83 ...

third embodiment

[0058]With reference to FIG. 11, the following explains a propeller power transmission device for a 1-engine, 2-shaft vessel according to a third embodiment of the present invention. Unlike the propeller power transmission device according to the second embodiment, the propeller power transmission device according to the third embodiment can be operated such that the output shaft 12a undergoes forward rotation and the output shaft 13a undergoes reverse rotation.

[0059]In the propeller power transmission device 1b according to the third embodiment, the intermediate shaft rotatably held inside the gear case 4b comprises a first intermediate shaft 80a, a second intermediate shaft 80b, and a third intermediate shaft 80c. The first intermediate shaft 80a rotatably supports a pair of driven bevel gears 82a and 83a engaged with a driving bevel gear 81 and comprises a forward and reverse rotation clutch mechanism 84a for selectively connecting one of the driven bevel gears 82a and 83a to the...

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Abstract

A propeller power transmission device according to the present invention comprises an input shaft 9 connected to a drive shaft 7 of an engine 3 via a coupling 8; a pair of right and left output shafts 12 and 13 connected to the right and left propeller shafts 5 and 6 via couplings 10 and 11, respectively; a gear train comprised of gears 20 to 30 for transmitting the power of the input shaft 9 to each of the output shafts 12 and 13 through clutch mechanisms 14, 15, 16 and 17, and causing the output shafts to undergo forward or reverse rotation in response to switching between forward and reverse rotation clutch mechanisms; and a gear case 4 for containing the input shaft 9, the output shafts 12 and 13, the gear train of gears 20 to 30, and the forward and reverse rotation clutch mechanisms 14 to 17.

Description

FIELD OF THE INVENTION[0001]The present invention relates to a propeller power transmission device for a 1-engine, 2-shaft vessel, in which a drive shaft of the engine has a pair of propeller shafts on the right and left sides.BACKGROUND ART[0002]Examples of a propeller power transmission device for a 1-engine, 2-shaft vessel for transmitting engine power by dividing it into left and right propeller shafts include a mode using bevel gears, which is disclosed, for example, in the specification of US Published Patent 2006 / 89062; and a mode using cylindrical (flat) gears, which is disclosed, for example, in the specification of Published Japanese Utility Model 70999 / 1982.[0003]In such power transmission devices, the gear mechanism for distributing engine power into the right and left sides is positioned immediately posterior to the engine, together with a rotational direction switching mechanism for selectively controlling the propeller shafts to undergo forward or reverse rotation, wh...

Claims

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Application Information

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IPC IPC(8): B63H23/08B63H23/06B63H20/20B63H20/14
CPCB63H23/06B63H23/30B63H23/16
InventorRYUGO, AKINOBUOKANISHI, TOSHIAKI
OwnerKANZAKI KOKYUKOKI MFG