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Mounting structure of coupling for ship

A technology for shaft couplings and ships, applied in the direction of shaft couplings, elastic couplings, rigid shaft couplings, etc., can solve the problems of difficult shaft maintenance and inability to remove the shaft, and achieve the goal of improving durability Effect

Inactive Publication Date: 2003-03-26
HONDA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] However, in this structure, since the flange portion 6b is integrally formed on the shaft 6, the shaft 6 cannot be pulled out to the rear of the hull (the impeller side, in the direction of the arrow R).
[0016] Thereby, in maintenance, under the situation of needing to replace shaft 6, when taking off the impeller (not shown in the figure) of its rear end, must pull out shaft 6 to the front (arrow F direction), but because there is in the front Drive side coupling with engine not shown in , shaft 6 cannot be removed without removing the engine
[0017] that is Figure 9 In the existing configuration shown, there is a problem that it is difficult to perform maintenance on the shaft 6

Method used

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  • Mounting structure of coupling for ship
  • Mounting structure of coupling for ship
  • Mounting structure of coupling for ship

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Fig. 1 is a partially cutaway schematic side view showing an example of a small planing boat using the first embodiment of the marine coupling installation structure of the present invention; figure 2 It is a schematic plan view of the same example.

[0041] As shown in these figures (based on Fig. 1), this small-sized planing boat 10 is a saddle type small ship, and the seat 12 on the hull 11 is seated by the occupant, who can operate while holding the joystick with the accelerator bar.

[0042] The hull 11 is a floating body structure in which a space 16 is formed by joining an outer shell 14 and a deck 15 . In the space 16 , an engine 20 is mounted on the casing 14 , and a jet pump (jet propulsion pump) 30 as a propulsion device driven by the engine 20 is provided at the rear of the casing 14 .

[0043] Jet pump 30 (refer to image 3 ) has the impeller 32 configured in the flow path 18 from the water intake 17 opening at the bottom of the ship to the jet outlet 31...

Embodiment 2

[0099] Figure 7 It is a figure which shows the main part of the 2nd embodiment of the coupling installation structure for ships of this invention; (a) is a side sectional view, (b) is only the collar part b-b sectional view of (a). in the Figure 7 In , the same or equivalent parts as those in the above-mentioned first embodiment are given the same symbols.

[0100] The present embodiment is mainly different from the above-mentioned first embodiment in that the driven side coupling 23b is screwed to the shaft 22, and that the collar 27 is divided into two parts 27a, 27b. Others remain unchanged.

[0101] In this embodiment, an annular groove 22d is formed at the rear of the mounting portion of the driven side coupling 23b of the shaft 22, and a bifurcated shaft larger than the maximum diameter D of the shaft 22 is installed in the groove 22d. Ring 27, 27. Thread 23c3 is formed on the hub portion 23c of the driven side coupling 23b and the front end of the shaft 22...

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PUM

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Abstract

An impeller drive shaft in a vessel is supported on a vessel body at a midsection thereof by a bearing member. A driven side coupler to be coupled with a drive side coupler on the side of an engine output shaft is mounted on a front end of the impeller driving shaft, a collar having a diameter larger than the maximum diameter D of the shaft is detachably mounted on the rear of the mounting portion for the driven side coupler on the impeller driving shaft, and the driven side coupler is fixed with respect to the shaft so as not to be capable of movement from axial thrust by an abutment between the collar and the driven side coupler. The collar may also be divided into two or more pieces with respect to the circumferential direction. The aforementioned arrangement improves durability of the shaft at the mounting portion for the driven side coupler and facilitates ease of maintenance.

Description

technical field [0001] The present invention relates to a coupling installation structure for ships. More specifically, it relates to the structure in which the driven side coupling is attached to the tip of the impeller drive shaft of the ship. Background technique [0002] In the prior art, as a coupling installation structure for ships, there are known Figure 8 The structure shown (Japanese Patent Application Laid-Open No. 7-112679 ) and Figure 9 The structure shown (Japanese Utility Model Registration No. 2542418). [0003] Figure 8 In the structure shown, the middle portion of the shaft 1 for driving the impeller of the ship is supported on the hull by the bearing member 2, and a coupling (not shown) on the side of the engine output shaft is attached to the front end 1a of the shaft 1 to connect it. The driven side coupling 3. [0004] Splines 1b are formed on the front end 1a of the shaft 1, and a cylindrical torque transmission member 4 is welded and fixed to th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B63H11/08B63B35/73B63H23/32F02B61/04F16D1/06F16D3/68
CPCF16D3/68B63H23/32F02B61/045B63B35/731B63H11/08B63B34/10
Inventor 布施知洋土谷政彦
Owner HONDA MOTOR CO LTD