JP4012967B2 - Pod propeller ship - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a pod propeller ship having a buttock flow type bottom surface in which the bottom surface of the stern is gently rising and tilting backward, and a pod propeller is provided below the bottom surface of the boat.
[0002]
[Prior art]
Conventionally, in a pod propeller ship, as shown in FIG. 5 , in order to provide the pod propeller P at the stern part, the shallow stern bottom surface of the draft is often projected rearward, and this causes a decrease in the maintenance performance. In order to prevent this, it has been proposed to provide a skeg K along the hull center line in front of the pod propeller. (See Japanese Patent Application No. 2002-303251)
[0003]
[Problems to be solved by the invention]
The present invention provides a pod propeller with a skegg as a skegg function in a pod propeller ship, in addition to a function that improves the maintenance performance, and a pod propeller with a skegg. It is an object of the present invention to provide a pod propeller ship in which a pod propeller with struts is provided behind the propeller and the propulsion performance can be improved by arranging a plurality of pod propellers in a row.
[0004]
[Means for Solving the Problems]
To solve the problems described above, the pod propeller ship of the present invention, in the vessel bottom under the stern section having a vessel bottom surface of the bar stock flow type, provided with a skeg secured to the hull along the hull center line, from the skeg A pod propeller with skeg comprising a pod formed so as to bulge to the left and right, a motor mounted inside the pod, and a propeller disposed at the rear end of the pod to be rotationally driven by the motor. A strut that hangs downward from the stern and below the bottom of the ship, a second pod that is attached to the lower end of the strut, and an interior of the second pod. A pod propeller with a strut comprising a motor and a propeller disposed at the rear end of the second pod to be rotated by the motor. , The strut with the pod propellers, lifting adjustably relative to the stern section to correspond to changes in the aft draft, it is characterized in that rotation adjustably disposed about the vertical axis to and perform the steering.
[0005]
In this way, when the pod propeller with skeg and the pod propeller with struts are provided in tandem under the stern bottom, it is easy to increase the propulsive force, and the pod propeller with struts on the back is provided so that it can be adjusted up and down. In addition to being able to respond to changes in drafts due to loading conditions such as when the loaded cargo is full and empty, the steering function can also be obtained by providing a pod propeller with struts that can be rotated around the vertical axis. It becomes like this.
[0006]
Further, the pod propeller ship of the present invention includes a skeg fixed to the hull along the hull center line, and is formed so as to swell left and right from the skeg under the stern part bottom having a buttocks flow type ship bottom. A pod propeller with a skeg is provided, which is composed of a pod that has been mounted, a motor mounted inside the pod, and a propeller disposed at the rear end of the pod to be rotated by the motor. A strut that hangs downward from the stern to the bottom of the ship, a second pod that is attached to the lower end of the strut, a motor that is attached to the inside of the second pod, and the above skeg A prop disposed at the front end of the second pod to be rotated in the opposite direction to the propeller of the attached pod propeller to form a contra-rotating propeller Comprising a strut with pod propellers consisting of La, the above strut, rotation adjustable rudder blade is characterized in that it is provided around the upper and lower axis.
[0007]
Further, according to the pod propeller ship of the present invention, the pod propeller with struts is provided so as to be adjustable up and down with respect to the stern according to changes in the stern draft, and the pod propeller with skeg is also provided with the pod propeller with struts with respect to the stern part. It is characterized in that it can be adjusted up and down in synchronization.
[0008]
As described above, a pod propeller with a skeg has a propeller at the rear end of the pod, and a pod propeller with a strut behind the pod has a propeller at the front end of the pod. The swirl component in the wake of the propeller is recovered, and the driving force is further increased.
[0009]
Further, by providing the strut of the propeller with struts with a rudder plate that can be rotated around the vertical axis, the steering function can be sufficiently maintained.
[0010]
Furthermore, the pod propeller with skeg and the pod propeller with struts constituting the contra-rotating propeller are configured to be able to move up and down in synchronization with each other in response to changes in the draft due to the loading state of the hull. There is an advantage that the propellers of both pod propellers can always operate at an appropriate depth while maintaining the function as a counter-rotating propeller.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
1 is a side view of a stern portion of a pod propeller ship as a first embodiment of the present invention. FIG. 2 is a side view of a pod propeller ship as a second embodiment of the present invention. 3 is a side view of the stern part, FIG. 3 is a view taken along the line AA of FIG. 2 , and FIG. 4 is a side view of the stern part of a pod propeller ship as a third embodiment of the present invention.
[0012]
First, to describe the pod propeller ship as a first embodiment of the present invention, as shown in FIG. 1, the aft portion of Batokkufuro type boat tail ship bottom 1 is gently sloping, the ship bottom underside along the hull center line A fixed skeg K is provided.
[0013]
The skeg K includes a pod 3 formed so as to bulge left and right from the skeg K, a motor 4 mounted in the pod 3, and a pod 3 that is rotated by the motor 4. There is provided a pod propeller P1 with a skeg comprising a propeller 5 disposed at the rear end.
[0014]
The electric power is supplied to the motor 4 from a generator driven by a main engine (not shown) such as a gas turbine on the ship through a power cable through a control panel, a battery, and the like.
[0015]
In the first embodiment, behind the pod propeller P1 with a skeg, a strut 6 that hangs downward from the stern part below the bottom of the ship, a second pod 3a attached to the lower end of the strut 6, and the second A pod propeller P2 with struts is provided which includes a motor 4a mounted inside the pod 3a and a propeller 5a disposed at the rear end of the second pod 3a so as to be rotationally driven by the motor 4a.
[0016]
The pod propeller with strut P2 can be adjusted up and down with respect to the stern portion via the drive mechanism 7 so as to be able to respond to changes in the stern draft, and can be rotated around the vertical axis for steering. Is provided. The power supply to the motor 4a in the pod propeller P2 with strut is performed in the same manner as the power supply to the motor 4 in the pod propeller P1 with skeg.
[0017]
In the first embodiment, as described above, the pod propeller P1 with skeg and the pod propeller P2 with struts are provided in a column in the bottom of the stern bottom. Propeller P2 is provided so that it can be adjusted up and down, so that it can respond to changes in stern draft surface W, W1 due to loading and trim changes, and pod propeller P2 with struts can be adjusted around the vertical axis. As a result, a steering function can be obtained.
[0018]
Further, since the pod propeller P2 with struts is provided so as to be adjustable up and down with respect to the stern portion via the struts 6 and the drive mechanism 7, the propeller 5a is kept at an appropriate depth position according to the change in the stern draft. Can be dealt with.
[0019]
Next, a pod propeller ship as a second embodiment of the present invention will be described. As shown in FIG. 2 , in the case of this embodiment as well, in the buttocks flow type stern part where the stern bottom 1 is gently inclined, A skeg K fixed to the bottom surface of the ship bottom along the center line is provided.
[0020]
The skeg K includes a pod 3 formed so as to bulge left and right from the skeg K, a motor 4 mounted in the pod 3, and a pod 3 that is rotated by the motor 4. There is provided a pod propeller P1 with a skeg comprising a propeller 5 disposed at the rear end.
[0021]
The electric power is supplied to the motor 4 from a generator driven by a main engine (not shown) such as a gas turbine on the ship through a power cable through a control panel, a battery, and the like.
[0022]
In the second embodiment, the rear side of the pod propeller P1 with skeg P1, the strut 6 hanging down from the stern portion below the bottom of the ship, the second pod 3a attached to the lower end of the strut 6, and the second A pod propeller P2 with struts is provided, which includes a motor 4a mounted inside the pod 3a and a propeller 5a disposed at the front end of the second pod 3a so as to be rotationally driven by the motor 4a. Thus, the propeller 5 at the rear end of the pod propeller P1 with skeg and the propeller 5a at the front end of the pod propeller P2 with struts are opposed to each other to constitute a contra-rotating propeller.
That is, when the forward propeller 5 is clockwise when the forward rotation is performed, the rear propeller 5a is set so as to be counterclockwise when the forward rotation is performed.
[0023]
As shown in FIGS. 2 and 3 , a rudder plate 8 mounted on the outer periphery of the strut 6 between the stern bottom surface 1 and the upper surface of the second pod 3a is moved by a steering gear 9 via a rudder shaft 8a. The rotation is controlled.
[0024]
As described above, the pod propeller P1 with skeg is provided with the propeller 5 at the rear end of the pod, and the pod propeller P2 with strut behind the pod is provided with the propeller 5a at the front end of the pod. Since the reversing propeller is configured, the swirl component in the wake of the propeller is recovered, and the driving force is further increased.
Then, the steering function is sufficiently maintained by providing the strut 6 of the propeller with strut P2 with the rudder plate 8 that can be rotated around the vertical axis.
[0025]
Further, since both propellers 5 and 5a constituting the counter-rotating propeller are driven to rotate by the electric motors 4 and 4a in the pod propellers P1 and P2, respectively, the rotation of the propellers 5 and 5a is larger than that of the propeller attached to the diesel engine. There is also an advantage that it is easy to synchronize.
[0026]
Next, a pod propeller ship as a third embodiment of the present invention will be described. As shown in FIG. 5, in the case of this embodiment as well, in the buttocks flow type stern part where the stern bottom 1 is gently inclined, A skeg K fixed to the bottom surface of the ship bottom along the center line is provided.
[0027]
The skeg K includes a pod 3 formed so as to bulge left and right from the skeg K, a motor 4 mounted in the pod 3, and a pod 3 that is rotated by the motor 4. There is provided a pod propeller P1 with a skeg comprising a propeller 5 disposed at the rear end.
[0028]
The electric power is supplied to the motor 4 from a generator driven by a main engine (not shown) such as a gas turbine on the ship through a power cable through a control panel, a battery, and the like.
[0029]
Further, behind the pod propeller P1 with skeg P1, a strut 6 hanging downward from the stern portion below the bottom of the ship, a second pod 3a attached to the lower end of the strut 6, and the inside of the second pod 3a A strut pod propeller P2 including a motor 4a mounted on the propeller 5a and a propeller 5a disposed at the front end of the second pod 3a so as to be rotationally driven by the motor 4a. The propeller 5 at the rear end of the pod propeller P1 and the propeller 5a at the front end of the pod propeller P2 with struts are opposed to each other to constitute a contra-rotating propeller.
That is, when the forward propeller 5 is clockwise when the forward rotation is performed, the rear propeller 5a is set so as to be counterclockwise when the forward rotation is performed.
[0030]
And the rudder board 8 with which the outer periphery of the strut 6 was mounted | worn between the stern bottom face 1 and the upper surface of the 2nd pod 3a is rotationally controlled by the steering gear 9 via the rudder shaft 8a. .
[0031]
By the way, in this 3rd Embodiment, while the pod propeller P2 with a strut is provided so that raising / lowering can be adjusted with respect to a stern part according to the change of stern draft, the pod propeller P1 with a skeg is also pod propeller P2 with a strut with respect to a stern part. It is provided so that it can be adjusted up and down in synchronization.
[0032]
That is, the pod propeller P2 with struts is provided to be adjustable up and down via the strut 6 by the drive mechanism 7A, whereas the pod propeller P1 with skeg is also provided to be adjustable up and down via the support member 11a by the drive mechanism 11. The two drive mechanisms 7A and 11 operate in synchronization with each other.
Further, a fin 10 that projects a rectifying function in cooperation with the skeg K is provided below the pod 3 in the pod propeller P1 with the skeg.
[0033]
As described above, the pod propeller P1 with skeg has the propeller 5 at the rear end of the pod 3, and the pod propeller P2 with struts behind the pod 3a has the propeller 5a at the front end of the pod 3a. By configuring the counter-rotating propeller to face each other, the swirl component in the wake of the propeller is recovered, and the driving force is further increased.
[0034]
Then, the steering function is sufficiently maintained by providing the strut 6 of the propeller with strut P2 with the rudder plate 8 that can be rotated around the vertical axis.
[0035]
Furthermore, since the pod propeller P1 with skeg and the pod propeller P2 with struts can be moved up and down in synchronization with each other in response to changes in the draft due to the loaded state of the hull, both pod propellers P1, P2 The propellers 5 and 5a can always be operated at an appropriate depth while maintaining the function as a counter-rotating propeller.
[0036]
In each embodiment, the means for providing the pod propeller so as to be able to move up and down with respect to the hull or to be able to turn around the central axis is described in Japanese Patent Application No. 2001-380417 relating to the application of the present applicant. There are things.
[0037]
As apparent from each of the above-described embodiments, according to the present invention, in the pod propeller ship having a buttocks flow type stern bottom, the skate K in the stern part has the function of improving the maintenance performance of the hull. ability to place a propeller also becomes to possess, and enables tandem arrangement of Rifuku number of pod propeller by thereto, but the realization of efficient pod propeller ship is expected.
[0038]
【The invention's effect】
As described in detail above, according to the pod propeller ship of the present invention, the following effects can be obtained.
( 1 ) Since the pod propeller with skeg and the pod propeller with struts are installed in tandem below the stern bottom, it is easy to increase the propulsive force, and the pod propeller with struts on the back is provided to be adjustable. In addition to being able to respond to changes in drafts due to loading conditions such as when the loaded cargo is full or empty, the pod propeller with struts can be adjusted around the vertical axis to provide a steering function. Become. (Claim 1 )
( 2 ) A pod propeller with skeg has a propeller at the rear end of the pod, and a pod propeller with struts behind it has a propeller at the front end of the pod. The swirl component of the wake is recovered, resulting in a further increase in thrust. Further, by providing the strut of the propeller with struts with a rudder plate that can be rotated around the vertical axis, the steering function is sufficiently maintained. Further, since both the propellers constituting the contra-rotating propeller are each driven to rotate by an electric motor, there is an advantage that the rotation can be easily synchronized. (Claim 2 )
( 3 ) When the pod propeller with skeg and the pod propeller with struts constituting the counter-rotating propeller are configured to be able to move up and down in synchronization with each other in response to changes in the draft due to the loading state of the hull. Thus, there is an advantage that the propellers of both pod propellers can be operated at an appropriate depth position while always maintaining the function as a counter-rotating propeller. (Claim 3 )
[Brief description of the drawings]
FIG. 1 is a side view of a stern part of a pod propeller ship as a first embodiment of the present invention.
FIG. 2 is a stern side view of a pod propeller ship as a second embodiment of the present invention.
FIG. 3 is an AA arrow view of FIG. 2 ;
FIG. 4 is a side view of the stern part of a pod propeller ship as a third embodiment of the present invention.
FIG. 5 is a stern side view showing an example of a conventional pod propeller ship.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Stern bottom 3 Pod 3a 2nd pod 4, 4a Motor 5, 5a Propeller 6 Strut 7, 7A Drive mechanism 8 Rudder plate 8a Rudder shaft 9 Steering machine
10 fins
11 Drive mechanism
11a Support member K Skeg P Pod propeller P1 Pod propeller with skeg P2 Pod propeller with strut W, W1 Draft

Claims (3)

  Under the bottom of the stern with a buttocks flow type bottom, a pod that is fixed to the hull along the center line of the hull and that swells to the left and right from the skeg, and inside the pod A pod propeller with a skeg consisting of a mounted motor and a propeller disposed at the rear end of the pod to be driven to rotate by the motor is provided, and behind the pod propeller with the skeg, from the stern part A strut suspended downward from the bottom of the ship, a second pod attached to the lower end of the strut, a motor attached to the inside of the second pod, and the second pod to be rotated by the motor. It has a pod propeller with struts consisting of a propeller arranged at the rear end. Vertically movably adjusted with respect to the stern section in order to respond, characterized in that provided rotate adjustable about a vertical axis to and performs steering, pod propeller ship.   Under the bottom of the stern with a buttocks flow type bottom, a pod that is fixed to the hull along the center line of the hull and that swells to the left and right from the skeg, and inside the pod A pod propeller with a skeg consisting of a mounted motor and a propeller disposed at the rear end of the pod to be driven to rotate by the motor is provided, and behind the pod propeller with the skeg, from the stern part A strut suspended downward from the bottom of the ship, a second pod mounted on the lower end of the strut, a motor mounted on the inside of the second pod, and the motor rotating in the opposite direction to the propeller of the pod propeller with skeg A pod with a strut comprising a propeller disposed at the front end of the second pod to be driven to form a contra-rotating propeller Comprising a propeller, the said strut, characterized in that the rotating adjustable rudder blade around a vertical axis is provided, the pod propeller ship. 3. The pod propeller ship according to claim 2 , wherein the pod propeller with struts is provided so as to be adjustable up and down with respect to the stern according to changes in the stern draft, and the pod propeller with skeg is also provided with the pod with struts with respect to the stern part. A pod propeller ship characterized in that it can be adjusted up and down in synchronization with the propeller.

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