JPS60215496A - Side thruster - Google Patents

Abstract

PURPOSE:To enable the thrust of a side thruster to be changed in magnitude only by changing the direction of an impeller duct, by providing the impeller duct pivotably in a horizontal plane within a hole for mounting the side thruster. CONSTITUTION:A hull 1 has a side thruster mounting hole 2a, in which an impeller duct 12 is mounted such that it can be rotated horizontally by means of a rotating shaft 13. An impeller 5 is disposed within the impeller duct 12 and connected with an engine 10 through gears 6 and 8. The impeller duct 12 is arranged so as to be swung horizontally by transmitting the output of a duct rotating engine 17 to the rotating shaft 13 through gears 14 and 15. Since the impeller duct 12 can be rotated within the side thruster mounting hole 2a, the thrust of the side thruster can be adjusted easily.

Description

[Detailed description of the invention] The present invention relates to a side thruster.

For example, the side thruster is shown in the side view in Figure 1 and the side view in Figure 2.
As shown in the cross-sectional view of -■ and the cross-sectional view of FIG. 3, the output shaft 9. Bevel gear8. The impeller 5 is rotated via the bevel gear 6 and the impeller shaft 4 to generate thrust in the width direction of the ship.

Here, 2 is the side thruster equipment a hole, 3 is the thrust receiver, and 7 is the ring.

However, such Zydo thrusters have the following drawbacks.

(1) Since the direction of the thrust is constant in the width direction of the ship, it cannot necessarily be said that it is perfect as a means of maneuvering the ship.

(2) In order to change the magnitude of thrust and force, the impeller rotation engine 10 is adjusted, but the operation is troublesome.

(3) In order to easily change the magnitude of the thrust, some use a variable pitch impeller, but in that case the structure of the side thruster is complicated and the price is high.

The present invention was proposed in view of the above circumstances, and an object of the present invention is to provide a side thruster that allows free maneuverability, is easy to handle, and is not so expensive.

To this end, the present invention provides a structure that extends horizontally across the submerged part of the hull and has a solo-shaped central cross-section, and a flat turret-shaped opening that is elongated in the ship's ship direction and has elliptical openings at both ends. a side thruster-equipped hole, an impeller duct provided in the center of the side thruster-equipped hole and pivoted via a vertical axis so as to be able to rotate in a suitable angle range in a horizontal plane; It is characterized by comprising an impeller that is built in and driven by a prime mover provided inside the ship, and a drive means that rotates the impeller duct around a vertical axis regardless of the rotation of the impeller.

One embodiment of the present invention will be explained with reference to the drawings. Fig. 4 is a side view, Fig. 5 is a sectional view taken along the line ■-■ in Fig. 4, and Fig. 6
The figure is a sectional view taken along VI-VI in FIG. 4.

In the above diagram, the same symbols as in Figures 1 to 3 are number 1.
Figure 3 shows the same members, and the mechanism for rotating the impeller 5 to generate thrust is the same as the conventional one described above, with 2a extending through the width of the hull 1 and extending in the longitudinal direction at both ends. A side thruster-equipped hole 12 in the form of an oblate side thruster having an oval opening is provided horizontally in the side thruster-equipped hole 2a, and the impeller 5 is connected to the side thruster 5 through the thrust receiver 3.
When it is pivoted, the impeller duct 13 extends surrounding it, and when it is protruded upward from the center of the top surface of the impeller duct 12 in order to rotate the impeller duct 12 in a horizontal plane, it becomes a side thruster. A hollow duct rotating nl+, 14 extends into the hull 1 through the equipment hole 2a in a watertight and rotatable manner and coaxially houses the output shaft 9 via a bearing 19, and is fitted into the upper end of the rotating duct 11113. A gear 18 that meshes with a gear 15 fitted on the output shaft 16 of the engine 17 for rotating the duct is provided protruding downward from the center of the lower surface of the impeller duct 12, and also opens the side thruster equipment hole 2a with water. The duct rotation shaft 18 and the duct rotation shaft 13 are on the same axis.

In such a device, when the duct rotation engine 17 is started, the output shaft 16. Since the torque is transmitted to the duct rotation shaft 13 via the gear 14, the impeller duct 12 rotates around the rotation shafts 13 and 18 as axes, regardless of the rotation of the impeller 8. - Can be rotated within the equipment hole 2a.

According to such a device, the following effects can be achieved.

(1) Since the direction of the thrust can be varied within a certain angular range with respect to the width direction of the ship, maneuvering the ship becomes easier.

(2) To change the magnitude of thrust, the operation is easy because it is only necessary to change the direction of the impeller duct without adjusting the engine for rotating the impeller.

(3) Since a variable pitch impeller is not used to change the magnitude of thrust, the price of the side thruster is not as high as the one shown above.

In short, according to the present invention, a flat rod which is horizontally penetrated across the submerged part of the ship's hull and has a solo-shaped central section has an elongated opening at each end extending in the longitudinal direction. a side thruster-equipped hole; an impeller duct provided at the center of the side thruster-equipped hole and pivoted via a vertical axis so as to be rotatable in a suitable angular range in a horizontal plane;
an impeller that is coaxially built into the impeller duct and driven by a prime mover provided inside the ship; and a drive means that rotates the impeller duct around a vertical axis independently of the rotation of the impeller. The present invention is industrially extremely useful because it provides a side thruster that is easy to maneuver and operate, and is economical.

[Brief explanation of the drawing]

Fig. 1 is a partial side view showing a ship equipped with a known side thruster, and Figs. 2 and 3 are respectively shown in Fig. 1.
4 is a side view showing one embodiment of the present invention, and FIGS.
-■ and ■-■ are cross-sectional views. ■...Hull, 2a...Side thruster equipment hole, 3...
Thrust receiver, 4... impeller shaft, 5... impeller, 6...
Bevel gear, 7...Ring, 8...Bevel gear, 9...Output shaft, 10...Engine for impeller rotation, 11...Outer plate,
12... Impeller duct, 13... Duct rotation axis, 14
··gear. 15...Gear, 16...Output shaft, 17...Duct rotation engine, 18...Duct rotation shaft, 19...Bearing, Sub-Agent Masafumi Tsukamoto, Patent Attorney

Claims (1)

[Claims] A horizontally extending hole extending horizontally across the submerged part of the ship's hull and having an almost circular central cross section is also a side stripe equipping hole with an oblate opening at each end that is elongated in the ship's direction. , an impeller duct provided in the center of the side thruster equipment hole and pivoted via a vertical axis so as to be able to rotate within a suitable angle range within a horizontal plane, and an impeller duct coaxially built into the impeller duct and provided inside the ship. A side thruster comprising: an impeller driven by a prime mover; and a drive means for rotating the impeller duct around a vertical axis independently of the rotation of the impeller.