JPH0629198Y2 - Ship propulsion equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a propulsion device for a ship.

(Prior Art) Currently, there are turrets, oars, and the like for manpower in ship propulsion devices, and screw type propellers, Voith Schneider propellers, jet jet propulsion devices, etc. are used for mechanical propulsion devices. What is currently in the mainstream in terms of propulsion efficiency and profitability is one configured to obtain propulsion force by connecting a screw type propeller to a power plant via a shaft rod.

(Problems to be solved by the device) However, depending on the propulsion device using such a screw type propeller, the screw type propeller and the ship may catch on the bottom of the water at a shallow water depth, which may hinder navigation. There is.

A jet jet propulsion device may be used to solve the above drawbacks, but in this case, there is a problem in terms of profitability in terms of construction cost and fuel cost. Further, a propulsion device using a screw type propeller has a drawback that a large propulsive force cannot be obtained with a small power. Further, a ship using a screw type propeller as a propulsion device has a drawback in that a rudder is required, the weight of the engine is increased due to equipment such as a steering machine, and the turning performance of the hull itself is deteriorated.

(Purpose of the Invention) In view of the above-mentioned drawbacks of the prior art, the present invention can navigate in shallow water without trouble, has a light hull weight, has excellent turning performance, and obtains a large propulsive force with small power. It is an object of the present invention to provide a propulsion device for a ship that can be constructed at low cost.

Therefore, the present invention is directed to a main shaft 1 extending in the front-rear direction of a ship and mounted rotatably around a horizontal axis, and a drive unit 2 that is connected to the main shaft 1 and that rotationally drives the main shaft 1 around the horizontal axis.
And a rotary rod 3 whose middle portion is connected to the rear end of the main spindle 1 so that the main spindle 1 becomes the center of rotation about the horizontal axis, and the rotary rod 3
A telescopic movable portion (rotating piece) 3e provided at both ends of the rotary rod 3 so as to be telescopically movable in the longitudinal direction, and a telescopic movable portion 3e of the rotary rod 3 whose front end extends in the front-rear direction of the ship. Attached via the connecting rod 8 whose rear end is set to a height position corresponding to the center of rotation of the rotating rod 3 and the rear part of the ship corresponding to the rear end of the connecting rod 8 around the vertical axis. The shaft rod 12 is provided so as to be reciprocally rotatable alternately to the left and right, and is fixed so as to project toward the connecting rod 8 on the outer periphery of the intermediate portion of the shaft rod 12, and is rotatable around the horizontal axis at the other end of the connecting rod 8. Between the attachment 8a connected via a flexible hinge, a hollow main shaft 17 which is arranged on the side of the shaft rod 12 and has a gear case 19 on the upper portion, and between the hollow main shaft 17 and the shaft rod 12. And the left and right alternating reciprocating power of the shaft rod 12 is transmitted to the hollow main shaft 17. Gear group 14, a rotating shaft 17a having an intermediate portion relatively rotatably mounted on an intermediate main shaft 17 and a lower end portion protruding below the ship bottom, a gear 23 fixed to an upper end portion of the rotating shaft 17a, and a gear. Worm gear 27 that is rotatably attached to case 19 and meshes with gear 23
A tail fin-shaped propulsion plate 31 fixed to the lower end projecting portion of the rotary shaft 17a and driven by a lateral reciprocal reciprocal rotation of the hollow main shaft 17 to cause a lateral swing motion; and a worm gear 27 attached to the gear case 19. By rotating the
And a motor 25 for changing the steering angle of the tail fin-shaped propulsion plate 31 by transmitting a relative rotational force to the main shaft 17 to the rotary shaft 17a via a gear 23.

When the worm gear 27 is not driven by the motor 25, the rotary shaft 17a integrally follows the left and right alternately reciprocating rotation of the shaft rod 12, that is, the left and right alternating reciprocating rotation of the main shaft 17. When the worm gear 27 is driven by the motor 25, the rotary shaft 17a is rotated with respect to the main shaft 17 via the gear 23 (a chain 29 is added in the embodiment).
Is forcibly rotated relatively.

In the operation of the above structure propulsion device, when the main shaft 1 is first rotated by the drive device 2, the rotary rod 3 rotates about this as a center. Then, the telescopic movable portion 3e of the rotary rod 3
The connecting rod 8 connected to is also rotated around the horizontal axis, and accordingly, the shaft rod 12 is alternately reciprocally rotated right and left via the attachment 8a. This reciprocating power is transmitted to the hollow main shaft 17 by the gear group 14, and the rotary shaft 17 installed in the main shaft 17
a is integrally reciprocally rotated right and left alternately, and thereby, the tail fin-shaped propulsion plate 31 is caused to swing sideways by following the shaft rod 12. Here, when changing the steering angle of the tail fin-shaped propulsion plate 31, it is sufficient to drive the worm gear 27 by the motor 25, whereby the hollow main shaft 1 via the gear 23.
The rotary shaft 17a is rotationally driven and displaced relative to 7, and the steering angle of the tail fin-shaped propulsion plate 31 is changed.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view of a propulsion device according to the present invention mounted on a ship, FIG. 2 is a sectional view taken along line AA of FIG. 1, and FIG.
FIG. 4 is a sectional view taken along the line BB of FIG. 4, FIG. 4 is a sectional view taken along the line CC of FIG. 1, and FIG. 5 is a sectional view taken along the line DD of FIG.

As shown in FIGS. 1 and 2, one end of the main shaft 1 including the rotary shaft 1a is rotatably connected to a drive device 2, and the other end of the main shaft 1 is connected to an intermediate portion of a rotary rod 3. ing. One end of the rotary shaft 1a in the main shaft 1 is connected to the rotary terminal 2a of the drive device 2 so that the drive device 2 can rotate together with the main shaft 1. The other end of the rotating shaft 1a is connected to the sliding screws 3a and 3b included in the rotating rod 3 via a bevel gear 4. A gear 5 is provided in the middle of the main shaft 1,
The gear 5 is rotatably connected to a drive device 7 via a chain 6.

The rotating rod 3 has a hollow interior, and a groove 3g is provided on the front surface of the rotating rod 3. A rotary piece 3e is provided at one end of the rotary rod 3 and a balancer 3f is slidably provided at the other end. Insertion holes 3f and 3i are formed inside the rotary piece 3e and the balancer 3f, and one end portions of the insertion holes 3h and 3i are threaded. The sliding screw 3b is inserted into the insertion hole 3h, and the sliding screw 3a is inserted into the insertion hole 3i.
The rotating piece 3e and the balancer 3f are adapted to slide in the rotating rod 3.

One end of the connecting rod 8 is rotatably attached to an end portion of the rotary piece 3e protruding to the outside of the rotary rod 3 via a mounting tool 8a having a universal joint. As shown in FIG. 1, the other end of the connecting rod 8 is connected to a substantially middle outer periphery of the shaft rod 12 so as to be rotatable about a horizontal axis of the hinge via an attachment 8b having a hinge. There is. The shaft rod 12 is vertically provided in the central portion of the gusset 11 arranged at the rear portion of the ship so that the shaft rod 12 can be alternately reciprocally rotated right and left around the vertical axis as the rotary rod 3 rotates.

A spline shaft 8c for expansion and contraction is provided at an intermediate portion of the connecting rod 8, and when the connecting rod 8 comes to a position indicated by a chain line by sliding the rotating piece 3e within the rotating rod 3 as shown in FIG. The length of the connecting rod 8 itself is automatically shortened via the expansion / contraction spline shaft 8c.

As shown in FIG. 4, gears 13a and 13b are provided above and below the shaft rod 12 in the gearbox 11, respectively.
A gear 14 is provided on the left side of 3b. Gear 13b
The gear 14 and the gear 14 are connected to each other via a chain 16. Further, the gear 1 is on the right side of the gear 13a in FIG.
5 is provided, and the gear 13a and the gear 15 are meshed with each other. The main shaft 1 is provided in the center holes of the gears 14 and 15.
7 and the main shaft 18 are penetrated and fixed respectively. Spindle 1
The insides of the shafts 7 and 18 are hollow, and the upper portions of the main shafts 17 and 18 project above the gearbox 11.

A box-shaped case 1 is provided above the spindles 17 and 18, respectively.
9 and 20 are provided, and the case cases 19 and 20 are the top plate 2.
It has 1 and 22. Rotating shafts 17a and 18a are provided inside the main shafts 17 and 18, and upper portions of the rotating shafts 17a and 18a face the case cases 19 and 20, respectively, and are rotatably connected to the top plates 21 and 22 of the case cases 19 and 20, respectively. Has been done. A direction indicator 31a is provided at the upper end of the rotary shaft 17a.
However, direction indicators 32a are provided at the upper end of the rotary shaft 18a, respectively, and the direction indicators 31a and 32a are formed so as to project on the gussets 9 and 10.

Gears 23 and 24 are provided in the gear cases 19 and 20, and the rotary shaft 17a is provided in the center holes of the gears 23 and 24.
Upper end portions of 18b are respectively penetrated and fixed.
The gears 23 and 24 are gear cases 19 and 20, respectively.
The worm gears 27 and 28 rotatably provided therein are engaged with each other. The worm gears 27 and 28 are connected to the motors 25 and 26 via chains 29 and 30, respectively, and the motors 25 and 26 are attached to the ends of the gear cases 19 and 20, respectively. The lower ends of the rotating shafts 17a and 18a project into the water below the bottom of the ship, and the rotating shafts 17a and 18a
The tail fin-shaped propulsion plates 31 and 32 are fixed to the protruding portion of the lower end of the shaft rod 12 to follow the left and right alternating reciprocating rotations of the shaft rod 12 to cause a lateral swing motion.

Next, the operation of this embodiment will be described.

As shown in FIGS. 1 and 2, when the gear 5 is rotated by the drive device 7 via the chain 6, the main shaft 1 and the rotating rod 3
The rotary motion is sequentially transmitted to the connecting rod 8. Connecting rod 8
Along with the rotation around the main shaft 1 at one end, the shaft rod 12 is oscillated to be reciprocally rotated right and left around the vertical axis through the attachment 8b having a hinge.

In FIG. 5, when the shaft rod 12 rotates leftward in the drawing, that is, in the counterclockwise direction, the gear 13a also rotates in the counterclockwise direction. Accordingly, the gear 15 rotates clockwise in FIG. 4, and as a result, the tail fin-shaped propulsion plate 3 is rotated.
2 rotates inward of the hull.

At this time, the gear 13b also rotates counterclockwise in FIG. Accordingly, the gear 14 is a chain 1
Rotate counterclockwise via 6. As a result, the tail fin-shaped propulsion plate 31 also rotates inward of the hull.

In the normal state, the gear 23, the gear 24 and the worm gear 2
Since gears 7 and 28 are engaged and fixed, gear 1
With the rotation of the main shafts 17 and 18 fixed to the motors 4 and 15, the rotary shafts 17a and 18a rotate integrally with them, and the tail fin-shaped propulsion plates 31 and 32 rotate.

On the other hand, when the shaft 12 rotates to the right in FIG. 5, the tail fin-shaped propulsion plates 31 and 32 rotate toward the outer side of the hull by the same action.

Therefore, when left and right alternating reciprocating rotations are caused in the shaft rod 12 due to the rotation of the one end of the connecting rod 8 about the main shaft 1, both of the tail fin-shaped propulsion plates 31 and 32 are simultaneously in the outward direction and simultaneously in the inward direction. Repeated side-to-side swing motion, which gives a stable propulsive force to the hull.

Further, when the rotation shaft 1a is rotated by the drive device 2, the sliding screws 3a and 3b rotate via the bevel gear 4, so that the rotation piece 3e and the balancer are engaged by meshing with the threaded portions in the balancer 3f. 3f slides inside the rotary rod 3, respectively, so that the distance between the rotary piece 3e and the balancer 3f can be adjusted. Thereby, the radius of gyration of one end of the connecting rod 8 about the rotary shaft 1a can be adjusted. As a result, in the above operation, the tail fin-shaped propulsion plate 3
The speed of the lateral swing motion of 1, 32 changes according to the radius of gyration, and the navigation speed of the ship can be adjusted accordingly.

Further, as shown in FIG. 3, when the motors 25 and 26 are rotated, the worm gears 27 and 28 are rotated via the chains 29 and 30, and the gears 23 and 24 are rotated accordingly. As a result, the gear 23 and the gear 24 are
Since it is fixed to a and 18a, the angle of the tail fin-shaped propulsion plates 31 and 32 with respect to the normal position, that is, the steering angle can be changed in accordance with the above operation, and thereby the steering operation of the ship can be performed.

The direction indicators 3 are provided on the upper ends of the rotary shafts 17a and 18a.
Since 1a and 32a are fixed and formed so as to project above the stern, the direction of the tail fin-shaped propulsion plates 31 and 32 can be easily known by the direction of the direction indicators 31a and 32a. At the position indicated by the alternate long and short dash line of the tail fin-shaped propulsion plate 32 shown in FIG. 2, the ship retreats, and the tail fin-shaped propulsion plate 3 shown in FIG.
The ship is braked at the position indicated by the alternate long and short dash line at 1,32. At this braking position, the tail fin-shaped propulsion plates 31, 32 are not laterally swung.

Although the number of tail fin-shaped propulsion plates 31 and 32 is two in the above embodiment, the present invention is not limited to this, and the number of tail fin-shaped propulsion plates 31 and 32 may be one or four. You may attach one. Further, in the above embodiment, the shaft rod 1 is formed by combining the gears in the gearbox 11.
Although the rotation of 2 is transmitted to the main shafts 17 and 18, the present invention is not limited to this method, and the rotation of the shaft rod 12 is transmitted to the main shafts 17 and 18 by combining a plurality of connecting rods. It may be configured as follows.

(Effect of the Invention) As described above, according to the present invention, since the rotational movement of the rotary rod is converted into the lateral swing motion of the tail fin-shaped propulsion plate via the connecting rod and the shaft rod in the drive device, the propulsive force is generated. It has the effect of navigating in shallow areas without any problems.

In addition, the motor can change the angular position of the tail fin-shaped propulsion plate with respect to the navigation direction via the rotating shaft so that it can play the role of steering.Therefore, it is not necessary to install a special steering device. It has an excellent effect that it is possible to build a ship which can be reduced in cost, has excellent turning performance, and can obtain great propulsive force with small power at low cost.

[Brief description of drawings]

FIG. 1 is a perspective view of a propulsion device according to the present invention mounted on a ship, FIG. 2 is a sectional view taken along line AA of FIG. 1, and FIG.
FIG. 4 is a sectional view taken along the line BB of FIG. 4, FIG. 4 is a sectional view taken along the line CC of FIG. 1, and FIG. 5 is a sectional view taken along the line DD of FIG. 1 ... Main shaft, 1a ... Rotary shaft 2 ... Drive device, 3 ... Rotating rod 8 ... Connecting rod, 12 ... Shaft rod 14,15 ... Gear 17a, 18a ... Rotating shaft 23,24. Gears 25, 26 ... Motors 31, 32 ... Tail fin propulsion plate

Claims (4)

[Scope of utility model registration request] 1. A main shaft 1 extending in the longitudinal direction of a ship and rotatably attached about a horizontal axis, and a main shaft 1 connected to the main shaft 1.
A drive device 2 for rotationally driving the main shaft 1 around a horizontal axis; a rotary rod 3 having an intermediate portion connected to a rear end portion of the main shaft 1 so that the main shaft 1 serves as a center of rotation around the horizontal axis; A telescopic movable portion 3e provided at both ends of the rotary rod 3 so as to be telescopically movable in the longitudinal direction of the rotary rod 3 and extending in the front-rear direction of the ship,
A connecting rod 8 whose front end is attached to the telescopic movable part 3e of the rotary rod 3 via a universal joint, and whose rear end is set at a height position corresponding to the center of rotation of the rotary rod 3, and the connecting rod. 8
At the rear part of the ship corresponding to the rear end part, the shaft rod 12 is provided so as to be reciprocally rotatable left and right alternately around the vertical axis, and protrudes toward the connecting rod 8 side at the outer periphery of the intermediate part of the shaft rod 12. Attached to the other end of the connecting rod 8 via a hinge that is rotatable around a horizontal axis.
And a hollow main shaft 17 arranged on the side of the shaft rod 12 and having a gear case 19 on the upper part thereof, and the hollow main shaft 17
And a group of the shafts 12, and a gear group 14 for transmitting the left and right alternating reciprocating reciprocating power of the shafts 12 to the hollow main shaft 17, and an intermediate portion relative to the hollow main shaft 17. A rotating shaft 17 that is rotatably installed and has a lower end protruding downward from the bottom of the ship.
a and a gear 23 fixed to the upper end of the rotary shaft 17a
And rotatably attached to the gear case 19,
The worm gear 27 that meshes with the gear 23 and the hollow main shaft 1 fixed to the lower end protruding portion of the rotary shaft 17a.
The tail fin-shaped propulsion plate 31 which is driven by the lateral reciprocal reciprocal rotation of 7 to cause a lateral swing operation, and the worm gear 27, which is attached to the gear case 19, and rotationally drives the worm gear 27, so that the The relative rotational force with respect to the main shaft 17 is transmitted to the rotary shaft 17a to transmit the tail fin-shaped propulsion plate 3
A ship propulsion device comprising a motor 25 for changing the steering angle of 1. 2. The propulsion device for a ship according to claim (1), wherein two tail fin-shaped propulsion plates are provided. 3. A propulsion device for a ship according to claim (1), wherein one tail fin-shaped propulsion plate is provided. 4. A propulsion device for a ship according to claim 1, wherein four tail fin-shaped propulsion plates are provided.