JPH046599B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a variable pitch propeller device used in a ship.

[Conventional technology]

In recent years, variable pitch propellers have been widely used as marine main propulsion devices, but in general, variable pitch propellers and regular fixed pitch propellers can only obtain thrust in the propeller axial direction, that is, thrust in the longitudinal direction of the ship.

Conventionally, when turning a ship, it is necessary to adjust the rudder angle or use the thrust of auxiliary propulsion devices such as side thrusters installed at appropriate locations on the ship to achieve the desired movement. is giving to

In particular, when using an auxiliary propulsion device such as a side thruster, by adjusting its thrust, the hull can be moved or rotated in any direction, improving maneuverability.

[Problem that the invention seeks to solve]

However, in order to equip the hull with an auxiliary propulsion device such as the above-mentioned side thruster, it is necessary to provide a drive mechanism for the auxiliary propulsion device inside the hull, which requires space for the equipment.
There is a problem that the weight of the hull increases.

In particular, special vessels such as deep-sea submersible vessels require a lighter hull and more efficient use of space in order to be equipped with various functions such as work manipulators. Differently, it is necessary to control the movement or rotation of the ship not only in the horizontal plane but also in the vertical plane, so when this control is performed by an auxiliary propulsion device such as a side thruster other than the conventional main propulsion device. , the hull must be equipped with more auxiliary propulsors than a normal ship, which increases the weight of the ship and makes it difficult to make effective use of the narrow space inside the ship.

In view of these circumstances, the present invention makes it possible to adjust the thrust for not only forward and backward movement, but also to turn the ship vertically and horizontally while moving forward or backward, without using an auxiliary propulsion device. An object of the present invention is to provide a variable pitch propeller device for a marine vessel, which improves the maneuverability of the ship, reduces the weight of the ship, and makes effective use of space inside the ship.

[Means for solving problems]

Therefore, the marine variable pitch propeller device of the present invention is provided with a spherical bearing that is slidable in the front-rear direction and an inclined plate that is tiltable along the spherical surface of the spherical bearing inside the propeller boss. At least three fluid pressure cylinders drive and control the longitudinal displacement, inclination direction, and inclination angle of the inclination plate, and the inclination plate is rotatable on the non-rotating inclination ring supported on the spherical surface. The rotary tilt ring is connected to the propeller boss which is integral with the propeller shaft which is to be rotated synchronously with the propeller shaft, and the propeller blade is rotated according to the displacement of the tilt plate. The telescopic end of the hydraulic cylinder is connected to the non-rotating tilt ring to change the pitch, and the rotating tilt ring is linked to the base end of the propeller blade.

[Effect]

In the marine variable pitch propeller device of the present invention described above, by adjusting and controlling the amount of displacement of the piston rod of the fluid pressure cylinder, the amount of movement in the longitudinal direction, the direction of inclination, and the inclination angle of the inclined plate are changed, and this amount of displacement is applied to the propeller blade. Since the pitch angle of the propeller blades can be changed periodically during one revolution of the propeller shaft, the direction and magnitude of the thrust by the propeller blades can be freely adjusted.

〔Example〕

Hereinafter, a marine variable pitch propeller device as an embodiment of the present invention will be explained with reference to the drawings.
Figure 1 is a horizontal sectional view of the same, Figure 2 is the − of Figure 1.
3 is a perspective view of the base end of the propeller blade, FIG. 4 is a sectional view of FIG. 3, and FIG.
Figures 11 to 11 are for explaining the action, and Figure 5a is a schematic horizontal sectional view showing the reference position of the inclined plate, and Figure 5b is a pitch of the propeller blade corresponding to Figure 5a. FIG. 6a is a schematic horizontal sectional view showing the state in which the inclined plate is moving forward. FIG. 6b is a pitch angle of the propeller blade corresponding to FIG. 6a. Schematic diagram showing the state of
Figure a is a schematic horizontal cross-sectional view showing the inclined plate moving backward, Figure 7b is a schematic diagram showing the pitch angle of the propeller blade corresponding to Figure 7a, and Figure 8 Fig. 8a is a schematic horizontal sectional view showing the left side of the inclined plate tilted forward; Fig. 8b
is a schematic diagram showing the state of the pitch angle of the propeller blade corresponding to FIG. 8a, FIG. 9a is a schematic horizontal sectional view showing the state in which the right side of the inclined plate is tilted forward, FIG. b is a schematic diagram showing the state of the pitch angle of the propeller blade corresponding to FIG. 9a, FIG. Figure b is a schematic diagram showing the state of the pitch angle of the propeller blades corresponding to Figure 10a,
Fig. 11a is a schematic side sectional view showing a state in which the lower side of the inclined plate is tilted forward, and Fig. 11b is a schematic diagram showing the state of the pitch angle of the propeller blade corresponding to Fig. 11a. It is.

As shown in FIG. 1, a support 3 is attached to a cover 1 on the hull side, and a bearing 9 and a seal 10 are attached to the outer peripheral surface of an annular projection 5 formed on the support 3. A prop boss 7 is rotatably mounted.

The propeller boss 7 is integrally connected to one end of the propeller shaft 2 within the propeller boss 7 so as to rotate in synchronization with the propeller shaft 2,
A plurality of (four in this embodiment) propeller blades 8 are attached to the outer periphery of the propeller boss 7 via a bearing seal portion 7a so as to be rotatable (pitch angle variable), and the propeller blades 8 are connected to the other end of the propeller shaft 2. It is designed to be rotationally driven by a motor that does not operate.

On the other hand, inside the propeller boss 7, a spherical bearing 13 is attached to a guide tube 6 formed in the support 3 so as to surround the propeller shaft 2, and a spherical bearing 13 is mounted along the guide tube 6 in the front-rear direction (rightward in FIG. 1). is the front)
is slidably attached to.

This spherical bearing 13 is composed of an inner ring 13a mounted on the guide tube 6, and an outer ring 13b tilting along a spherical surface 13c formed on the outer peripheral surface of the inner ring 13a.

Further, an inclined plate 20 is attached to the spherical bearing 13 so as to be tilted along the spherical surface 13c.
It is composed of a non-rotating inclined ring 14 which is fixed to the outer ring 13b and supported on the spherical surface 13c together with an outer ring 13b, and a rotating inclined ring 16 which is rotatably supported on the outer periphery of the non-rotating inclined ring 14 via a bearing 15.

As shown in FIGS. 1 and 2, the non-rotating inclined ring 14 of the inclined plate 20 configured in this manner has fluid pressure cylinders 11a, 11b and 11c located at the upper and left portions of the front surface of the non-rotating inclined ring 14. and the piston rods 12a, 1 at the right side, respectively.
These hydraulic cylinders 11a, 11b and 11c are used to connect piston rods 12a, 12b and 12c.
By driving these in the longitudinal direction, the inclined plate 20 moves in the longitudinal direction along the guide tube 6 together with the spherical bearing 13, or tilts along the spherical surface 13c together with the outer ring 13b of the spherical bearing 13.

Therefore, the fluid pressure cylinders 11a, 11b,
11c, the front-rear displacement, the tilting direction, and the tilting angle of the tilting plate 20 are drive-controlled.

Note that the fluid pressure cylinders 11a, 11b, 11c
The front end thereof is pivotably attached to a protrusion 4 formed on the rear surface of the support 3. Further, the tips of the piston rods 12a, 12b and 12c are connected to the non-rotating inclined ring 14 by a universal joint 21.
It is pivotally connected via.

Furthermore, the fluid pressure cylinders 11a, 11b, 11
An oil supply/drainage pipe (not shown) is connected to each of the piston rods 12a, 12b, and c.
A displacement meter (not shown) is attached to detect the amount of displacement of the fluid pressure cylinders 11a, 12c.
By controlling the amount of oil supplied to piston rods 11b and 11c by a control device (not shown), the amount of displacement of piston rods 12a, 12b, and 12c can be controlled to a set value.

By the way, as shown in FIGS. 1 to 3, a protrusion 16a is provided on the outer circumferential surface of the rotating inclined ring 16, facing the base end 8a of the propeller blade 8 that protrudes into the propeller boss 7. The portion 16a and an arm 8b protruding from the base end 8a of the propeller blade 8 are connected by a transmission link 17. Note that the connection between the protrusion 16a and the transmission link 17 is rotatable around the circumferential axis of the rotary tilt ring 16, while the connection between the arm 8b and the transmission link 17 is shown in FIGS. It is configured as a universal joint as shown.

As a result, the piston rods 12a, 12b,
12c is driven and the inclined plate 20 moves or tilts and is displaced, this displacement is transmitted to the propeller blade 8 via the transmission link 17, and the pitch angle of the propeller blade 8 is changed according to the amount of displacement of the inclined plate 20. be able to.

Note that the rotating inclined ring 16 is coupled to the propeller boss 7 by a link 19 so as to be able to rotate in synchronization with the propeller blades 8, while the non-rotating inclined ring 14 is coupled to the propeller boss 7 by a link 18 to prevent rotation. It is connected to the guide tube 6.

Since the marine variable pitch propeller device of the present invention is constructed as described above, the piston rod 1 of the three fluid pressure cylinders 11a, 11b, 11c
By adjusting and controlling the displacement amounts of the inclined plates 2a, 12b, and 12c, the longitudinal displacement, the inclination direction, and the inclination angle of the inclined plate 20 are drive-controlled.

The rotating inclined ring 16 is attached to the propeller boss 7 along the outer circumference of the non-rotating inclined ring 14 of the inclined plate 20.
Since the inclined plate 20 rotates together with the propeller blades 8, the displacement amount of the inclined plate 20 is transmitted to each propeller blade 8 via the transmission link 17.

Therefore, the pitch angle of the propeller blades 8 during one revolution of the propeller shaft 2 can be changed according to the amount of displacement of the inclined plate 20, and the direction and magnitude of thrust can be adjusted.

For example, as shown in FIG. 5a, the inclined plate 20
is at the reference position S, the pitch angle of the propeller blade 8 becomes 0 at any position, as shown in FIG. 5b, and no thrust is generated. However, the direction of rotation of the propeller blades 8 is assumed to be clockwise as shown by the arrow in FIG. 5b.

When the piston rods 12a, 12b, 12c of the fluid pressure cylinders 11a, 11b, 11c are uniformly contracted from such a no-thrust state, the inclined plate 20 is moved into the guide tube 6 as shown in FIG. 6a. The pitch angle of the propeller blade 8 is the same positive value at any position, as shown in Figure 6b, so the propeller blade 8 is slid forward (to the right in the figure) in the forward direction of the ship. thrust is generated.

Conversely, from the reference position S, the fluid pressure cylinder 11a,
Piston rods 12 for each of 11b and 11c
a, 12b, and 12c are pushed out evenly, the inclined plate 20 slides backward along the guide tube 6 as shown in FIG. 7a, and the pitch angle of the propeller blade 8 becomes as shown in FIG. 7b. As shown, since the value is equally negative at any position, a thrust force is generated in the backward direction of the ship.

On the other hand, as shown in FIG.
During one rotation of the propeller shaft 2, the pitch angle of the propeller blade 8 is 0 in the vertical position and 0 in the left and right positions, respectively, as shown in FIG. 8b. Can be positive and negative values.

Therefore, the propeller blade 8 generates thrust in the forward direction on the left side and thrust in the reverse direction on the right side, so that the propeller blade 8 turns to the right of the hull.

In addition, when the right side of the inclined plate 20 is tilted forward as shown in FIG. 9a by the operation opposite to the above, the pitch angle of the propeller blade 8 becomes as shown in FIG. 9b, and the hull Turn to the left.

Furthermore, as shown in FIG. 10a, the reference position S
From the piston rod 12 of the fluid pressure cylinder 11a
When a is pulled in, the inclined plate 20 tilts along the spherical bearing 13 so that its upper side is positioned forward, and the pitch angle of the propeller blade 8 changes during one revolution of the propeller shaft 2, as shown in FIG. 10b. , 0 at the left and right positions, and positive and negative values at the upper and lower positions, respectively.

Therefore, the propeller blades 8 generate thrust in the forward direction at the upper side and thrust in the backward direction at the lower side, so that the hull rotates downward.

By the operation opposite to the above, the lower side of the inclined plate 20 is
As shown in Figure 11a, when tilted forward,
The pitch angle of the propeller blades 8 becomes as shown in FIG. 11b, and the hull rotates upward.

In the above, the movements of the inclined plate 20 in the three directions of forward and backward movement, left and right tilting, and forward and backward tilting have been explained independently, but the hydraulic cylinders 11a, 11b, 11
By adjusting c, the movements in these three directions can be appropriately combined to generate thrust in all directions.

In addition, in the above-described operation, the amount of displacement of the piston rods 12a, 12b, 12c is adjusted,
By appropriately setting the pitch angle of the propeller blades 8, the magnitude of the generated thrust can also be adjusted.

In the marine variable pitch propeller device of the present invention, the direction and magnitude of the thrust generated by the propeller blades 8 can be freely adjusted, so there is no need to use an auxiliary propulsion device such as a conventional side thruster. The maneuverability of the ship is improved.

Furthermore, since there is no need to equip the ship with a drive mechanism for the auxiliary propulsion device, the weight of the ship can be reduced and the space inside the ship can be used effectively.

Although this embodiment shows a case in which there are four propeller blades 8, the variable pitch marine propeller device of the present invention can obtain the same effects as described above regardless of the number of propeller blades 8.

〔Effect of the invention〕

As detailed above, according to the marine variable pitch propeller device of the present invention, inside the propeller boss,
A spherical bearing capable of sliding in the front-rear direction, and an inclined plate capable of tilting along the spherical surface of the spherical bearing, and driving and controlling the longitudinal displacement, inclination direction, and inclination angle of the inclined plate. the inclined plate is comprised of a non-rotating inclined ring supported on the spherical surface and a rotating inclined ring rotatably supported on the non-rotating inclined ring; The extensible end of the fluid pressure cylinder is connected to the propeller boss which is integral with the propeller shaft to be rotated in synchronization with the propeller shaft, and is connected to the non-rotating inclined ring to change the pitch of the propeller blades according to the amount of displacement of the inclined plate. with a simple configuration in which the rotating inclined ring is linked to the base end of the propeller blade,
Since the direction and magnitude of the thrust generated by the propeller blades can be freely adjusted, the maneuverability of the ship can be greatly improved without using a conventional auxiliary propulsion device such as a side thruster.

Furthermore, since there is no need to equip the ship with a drive mechanism for the auxiliary propulsion device, the weight of the ship can be reduced and the space inside the ship can be used effectively.

[Brief explanation of drawings]

The figures show a marine variable pitch propeller device as an embodiment of the present invention, in which Fig. 1 is a horizontal sectional view thereof, Fig. 2 is a sectional view taken along the - arrow in Fig.
The figure is a perspective view of the base end of the propeller blade, FIG. 4 is a view taken in the direction of the arrow in FIG. Fig. 5b is a schematic horizontal sectional view showing the reference position of
is a schematic diagram showing the state of the pitch angle of the propeller blade corresponding to FIG. 5a, FIG. 6a is a schematic horizontal sectional view showing the state in which the inclined plate is moving forward, and FIG. A schematic diagram showing the state of the pitch angle of the propeller blade corresponding to FIG. 6a, FIG. 7a is a schematic horizontal sectional view showing the state in which the inclined plate is moving backward, and FIG. Fig. 7a is a schematic diagram showing the state of the pitch angle of the propeller blade, Fig. 8a is a schematic horizontal sectional view showing the state in which the left side of the inclined plate is tilted forward, and Fig. 8b is a schematic diagram showing the state of the pitch angle of the propeller blade. A schematic diagram showing the state of the pitch angle of the propeller blade corresponding to Fig. 8a, Fig. 9
Figure a is a schematic horizontal sectional view showing a state in which the right side of the inclined plate is tilted forward, Figure 9b is a schematic diagram showing the pitch angle of the propeller blade corresponding to Figure 9a, Figure 10a is a schematic side sectional view showing a state in which the upper side of the inclined plate is tilted forward;
Fig. 0b is a schematic diagram showing the pitch angle state of the propeller blade corresponding to Fig. 10a, Fig. 11a is a schematic side sectional view showing the state in which the lower side of the inclined plate is tilted forward; FIG. 11b is a schematic diagram showing the state of the pitch angle of the propeller blade corresponding to FIG. 11a. DESCRIPTION OF SYMBOLS 1...Support, 2...Propeller shaft, 3...Support, 4...Protrusion, 5...Annular protrusion, 6...
... Guide tube, 7 ... Propeller boss, 7a ... Bearing seal part, 8 ... Propeller blade, 8a ... Proximal end of propeller blade, 8b ... Arm, 9 ... Bearing, 10
...Seal, 11a, 11b, 11c...Fluid pressure cylinder, 12a, 12b, 12c...Piston rod, 13...Spherical bearing, 13a...Inner ring of spherical bearing, 13b...Outer ring of spherical bearing, 13c...
Spherical surface of spherical bearing, 14...Non-rotating inclined ring, 1
5...Bearing, 16...Rotating tilt ring, 16a...
...Protrusion, 17...Transmission link, 18, 19...
Link, 20... Inclined plate, 21... Universal joint, S... Reference position of inclined plate.

Claims (1)

[Claims] 1 Inside the propeller boss, a spherical bearing that can slide in the front-rear direction and an inclined plate that can tilt along the spherical surface of the spherical bearing are provided, and the displacement in the longitudinal direction, the inclination direction, and the angle of inclination of the inclined plate are and at least three fluid pressure cylinders for driving and controlling said inclined plate, and said inclined plate is composed of a non-rotating inclined ring supported on said spherical surface and a rotating inclined ring rotatably supported on said non-rotating inclined ring. The rotating inclined ring is connected to the propeller boss which is integral with the propeller shaft so as to rotate in synchronization with the propeller shaft, and the non-rotating inclined ring is connected to the propeller boss which is integral with the propeller shaft to rotate in synchronization with the propeller shaft, and the non-rotating inclined ring is connected to the propeller boss which is integral with the propeller shaft so as to rotate in synchronization with the propeller shaft. A marine variable pitch propeller device, characterized in that the telescoping ends of the fluid pressure cylinder are connected, and the rotating inclined ring is linked to the base end of the propeller blade.