JP2843711B2 - Water jet type berthing aid - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water jet type shore auxiliary device for a water jet propulsion ship.

[0002]

2. Description of the Related Art Conventionally, a relatively high-speed water jet propulsion ship configured to jet water pressurized by a water jet pump from a water jet nozzle has been put into practical use. A bow thruster driven by an electric motor is provided as an auxiliary device for leaving and landing. On the other hand, JP-A-59-40997 discloses a water jet maneuvering device in which the direction of propulsion can be changed by swinging a water jet nozzle to the left and right. A pair of left and right ducts is provided to change the direction of the water jet to the left and right. When the water jet nozzle is swung to the left, it is introduced into the left duct to generate a turning moment of left turning. A water jet maneuvering device is described in which a jet nozzle is swung rightward to be introduced into a right duct to generate a turning moment of right turning.

[0003]

When a bow thruster is provided on the water jet propulsion ship, problems such as an increase in weight, an increase in manufacturing cost, and an increase in power consumption of a bow thruster driving motor are caused. is there. On the other hand, in the water jet maneuvering device described in the above publication,
Due to the complexity of the structure for swinging the water jet nozzle to the left and right, and the provision of a pair of left and right ducts at the rear of the hull, a turning moment is generated to turn the bow in the direction to separate the shore like a bow thruster. Difficult thing,
There are problems such as. SUMMARY OF THE INVENTION It is an object of the present invention to provide a water jet type berthing assist device capable of generating a turning moment similar to a bow thruster by effectively utilizing a water jet.

[0004]

According to a first aspect of the present invention, there is provided a water jet propulsion boat configured to jet water pressurized by a water jet pump from a water jet nozzle. Inside the hull on both left and right sides of the hull, water guide passages extending from the vicinity of the water jet nozzle to a substantially central portion in the longitudinal direction of the hull are provided, and the front end of each of the water guide passages is opened outward of the hull side. Port on the port side of the rear end of the hull
An introduction tube that is pivotally attached to a site, and
And a driving means for moving drives, the inlet tube in the drive means, capable of switching at least part of the water jet exiting from the water jet nozzle and the position not to introduce the position for introducing the rear end of the left side of the water guide passage A left-side water jet introduction mechanism, and a rear end of the hull
An inlet pipe rotatably connected to the starboard side, and this inlet
Driving means for driving the pipe to rotate, and
And configured to be switched to the position not to introduce the position for introducing the rear end portion of the right side of the water guide passage at least a portion of the water jet exiting from the water jet nozzle
Also of the is provided with the right water jet introduced mechanism made.

[0005] The water jet type auxiliary device for detaching and landing on a shore according to a second aspect of the present invention provides a water jet pump for discharging water pressurized by a water jet pump.
Water that is ejected from the water jet nozzle
In a water jet propulsion ship, the right and left sides of the hull
Inside the hull, near the water jet nozzle,
Each of the water guide passages extending substantially at the center in the longitudinal direction is provided,
At the front end of the water passage, a jet opening outwardly on the side of the hull
An outlet is provided, and it is rotatable at the rear end of the left water passage.
A pivotally mounted introduction pipe and a driving hand for rotationally driving the introduction pipe;
And a drive means for introducing the introduction pipe by the water jet.
At least a part of the water jet
The position to be introduced at the rear end of the water conduit on the left and the position not to be introduced
The left water jet is configured to be switchable between
And a pivoting mechanism at the rear end of the right water conduit.
Introductory tube freely pivoted and rotationally driving this introducing tube
And a drive means, wherein the drive means causes the introduction pipe to
At least the water jet coming out of the jet nozzle
Position the part to be introduced at the rear end of the right water channel,
Right side water that can be switched between
A jet introduction mechanism is provided.

[0006]

According to the water jet type auxiliary device for berthing and landing of the water jet of the first aspect, when both the introduction pipes of the left water jet introduction mechanism and the right water jet introduction mechanism are held at positions where the water jet is not introduced, the water jet is ejected backward. Propulsion is generated. Here, the introduction pipe of the left water jet introduction mechanism is rotated by the driving means.
When the water jet is switched to a position where at least a part of the water jet is introduced to the rear end of the left water passage, the water jet is introduced into the left water passage, and the water jet is discharged from the front end of the water passage to the outside of the hull side. Since it is ejected toward the direction, a turning moment of right turning is generated. Further, the inlet pipe of the right side waterjet introducing mechanism, rotation of the drive means
Then, when the water jet is switched to a position where at least a part of the water jet is introduced into the rear end of the right water passage, the water jet is introduced into the right water passage, and the water jet is introduced from the spout at the front end of the water passage to the side of the hull. Since it is jetted outward, a turning moment of a left turn is generated. The spout at the front end of the water guide passage is located substantially at the center in the longitudinal direction of the hull, so that a turning moment similar to that of a bow thruster can be generated.

[0007] A water jet type auxiliary for berthing and landing according to claim 2
In the auxiliary device, as in the first embodiment, the left water
The introduction pipe of the jet introduction mechanism is rotated by the driving means to
At least part of the water jet after the headrace on the left
And obtain conversion cut in a position to be introduced at the end, the water jet
Is introduced into the left channel, and the jet at the front end of the channel is
Since it is jetted outward from the exit from the side of the hull,
Twice turning moment is generated. Also, right water
The introduction pipe of the jet introduction mechanism is rotated by the driving means to
At least part of the water jet after the right headrace
If you switch to the position to introduce to the end, the water jet
Is introduced into the right aqueduct and the jet at the front end of the aqueduct is
Since it is jetted outward from the exit from the side of the hull,
Twice turning moment is generated. Of the front end of the water passage
The spout is located at approximately the center of the hull in the longitudinal direction.
It is possible to generate a turning moment similar to Ustora
I can do it .

[0008]

According to the water jet type berthing assist device of the first aspect, as described in the section of the operation, a pair of right and left water guide passages, a spout at the front end of each water guide passage, and a ship are provided.
Inlet tube pivotally attached to the body and drive to rotate the inlet tube
Since the unit is provided a water jet introduction mechanism a pair of left and right, including respectively the introduction of the right and left water jet introduction mechanism
By selectively switching the pipe to the introduction position, it is possible to generate a turning moment that turns left and right in a desired direction, similarly to the bow thruster. The following effects can be obtained: the motor drive power can be reduced by utilizing the water jet for propulsion.

[0009] The water jet type auxiliary for berthing of claim 2
According to the auxiliary device, as described in the section of the operation, the right and left
A pair of water passages and a spout at the front end of each water passage
An inlet pipe rotatably connected to the rear end of the headrace passage
Right and left 1 each including a driving means for rotationally driving the introduction pipe.
Since a pair of water jet introduction mechanisms is provided,
Selectively position the introduction pipe of the water jet introduction mechanism
By switching, the right and left
It can generate a turning moment that turns in the desired direction.
What you can do, easy to configure into a relatively simple and lightweight device
Water jet for propulsion that can be implemented at low cost
That the motor drive power can be reduced by utilizing
The effect is obtained.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. This embodiment is an example in which the present invention is applied to a water jet propulsion ship as a ferry ship mainly used for transporting passengers. As shown in FIGS. 1 to 4, an intake duct 2 extending from the bottom of the water jet propulsion boat WS to the water jet pump 3 is provided in a lower part of the rear of the hull 1 of the water jet propulsion boat WS. It is provided at the center in the left-right direction of the rear end and is driven by a turbine engine (not shown).

A water jet nozzle 4 extending rearward from the water jet pump 3 is provided, and a water jet is jetted rearward from the water jet nozzle 4. The water jet type detachment / landing auxiliary device includes a pair of left and right water guide passages 10 each formed of a pipe member, and a left water jet introduction mechanism for introducing a water jet jetted from the water jet nozzle 4 into the port side water guide passage 10. And a right-side water jet introduction mechanism 11 for introducing the water jet ejected from the water jet nozzle 4 into the water guide passage 10 on the starboard side.

The port-side water guide passage 10 is disposed in the port side portion of the hull 1 so as to extend from the rear end of the hull 1 to substantially the center in the longitudinal direction of the hull 1. The passage 10 is provided in the starboard side portion of the hull 1 so as to extend from the rear end of the hull 1 to a substantially central portion in the longitudinal direction of the hull 1. At the front end of the port-side water passage 10, as shown in FIG. 4, there is provided a jet port 12 which is open horizontally to the outside of the left side of the hull 1, that is, to the left.
At the front end of the water guide passage 10 on the starboard side, symmetrically to the one shown in FIG. 4, there is provided a spout 12 that opens horizontally to the outside of the right side of the hull 1, that is, to the right. .

Since the left water jet introducing mechanism 11 and the right water jet introducing mechanism 11 are symmetrical with respect to the vertical plane including the hull center line, the left water jet introducing mechanism 11 will be described with reference to FIGS. explain. An inlet pipe 13 for introducing the water jet into the water channel 10 on the port side is provided. The inlet pipe 13 is rotatably mounted near the left end of the rear end of the hull 1, and a rear end thereof. And an arm tube 13b extending from the air jet nozzle 4 to a position near the rear of the water jet nozzle 4, and a curved tube 13c formed at the tip of the arm tube 13b. The pivot tube 13a is provided at the rear end of the hull 1 Pivot bracket 1
The sleeve 17 is rotatably inserted into and attached to the hull 1 and extends into the hull 1, is rotatably and water-tightly fitted to the rear end of the water guide passage 10, and is externally fitted and fixed to the pivot pipe 13 a in the hull 1. The position in the front-rear direction is regulated via the.

A drive gear 20 fixed to an output shaft of an electric motor 19 or a hydraulic motor is meshed with a gear 18 externally fixed to the sleeve 17, and the electric motor 19 pivots through the drive gear 20 and the gear 18. The branch pipe section 13a is configured to be rotatable. Reference numeral 15 denotes a seal member, and reference numeral 16 denotes a bearing member. When the arm tube portion 13b is held in a horizontal state, the opening at the distal end of the curved tube portion 13c faces the water jet nozzle 4 from behind, and the water jet is introduced into the curved tube portion 13c. The water jet is supplied into the water passage 10 through the pipe 13b and the pivot pipe 13a, and the water jet is jetted to the left from the jet port 12 on the port side, thereby generating a turning moment of right turning.

In FIG. 2, the arm pipe portion 13b of the water pipe 13 of the water jet introduction mechanism 11 on the right side is directed vertically upward or vertically downward, and the arm pipe section 13 of the water pipe 13 of the water jet introduction mechanism 11 on the left side. When the arm 13b of the water pipe 13 of the right water jet introduction mechanism 11 is held in a horizontal state by turning the section 13b vertically upward or vertically downward, the water jet is similarly moved to the water pipe of the right water jet introduction mechanism 11 as described above. 13, and is jetted to the right from the jet port 12 on the starboard side, so that a turning moment of turning left is generated. However, when the arm pipe portions 13b of the left and right introduction pipes 13 are directed in the vertical direction, the water jets are ejected straight rearward, so that a thrust for propelling the hull 1 forward is generated.

As described above, the water jet can be spouted from the jet port 12 at the center on the port side via the water guide passage 10 on the left side and the water jet introducing mechanism 11 on the left side to generate a turning moment of right turning. , Right water channel 1
Since the water jet can be spouted from the jet port 12 at the center of the starboard through the water jet introduction mechanism 11 on the right side and the water jet introduction mechanism 11 on the right side to generate a turning moment of left turning, the maneuverability at the time of leaving or berthing is remarkably improved. . In order to effectively use the water jet generated by the water jet pump 3, there is no need to drive a large electric motor such as a bow thruster to consume a large amount of electric power, nor to use a large amount of electric power.
Since both the water jet introduction mechanism 11 and the left and right water jet introduction mechanisms 11 have relatively simple configurations, they can be implemented easily and inexpensively, and are excellent in practicality. Note that a configuration may be adopted in which the introduction pipe 13 is rotated 90 degrees by a hydraulic cylinder instead of the electric motor 19.

Next, the left and right water jet introducing mechanisms 1
Modification 1 will be described. As shown in FIG. 5, overhang portions 1 are provided on the left and right portions of the rear end portion of the hull 1.
a is provided, the left water guide passage 10A is extended to the left overhang 1a and is curved toward the center, and the right water passage 10A is extended to the right overhang 1a and is curved toward the center. . And the left and right water conveyance passages 10
The rear end portion of A is formed in a duct shape having a rectangular cross section. Since the left and right water jet introduction mechanisms 11A have a symmetrical configuration, the left water jet introduction mechanism 1
1A, a base end of an introduction pipe 13A having a substantially J-character shape in a plan view and having a rectangular cross section is located at an upstream end of a rear end of a left water guide passage I0A, an introduction position shown by a solid line, and a retreat position shown by a chain line. When the introduction pipe 13A is held at the introduction position shown by a solid line, the water jet is introduced into the left introduction pipe 13A, and the port-side water passage 10
It is supplied to the port 12 on the port side via A, and is discharged from the port 12.

When the left inlet pipe 13A is held at the retracted position shown by the dashed line and the right inlet pipe 13A is held at the inlet position, the water jet is introduced into the right inlet pipe 13A, and the starboard-side water passage is provided. The air is supplied to the port 12 on the starboard side via 10A and is discharged from the port 12. still,
Although not shown, a rotary drive device including a hydraulic cylinder or the like for independently switching the positions of the left and right introduction pipes 13A over both positions is provided.

In the above embodiment, most of the water jet is alternatively introduced into the left and right inlet pipes 13 and 13A. However, a part of the water jet is introduced into the left and right inlet pipes 13 and 13A. Needless to say, it may be configured to be introduced alternatively to 13A. Further, in the case of a water jet propulsion boat having a pair of right and left water jet pumps 3 and water jet nozzles 4, the left water jet is supplied to the left inlet pipes 13 and 13A and the water conduits 10 and 10A, and May be supplied to the right inlet pipes 13 and 13A and the water conduits 10 and 10A.

[Brief description of the drawings]

FIG. 1 is a side view of a water jet propulsion boat according to an embodiment.

FIG. 2 is a schematic plan view of the water jet propulsion boat.

FIG. 3 is a sectional view of a main part of a water jet introduction mechanism.

FIG. 4 is a cross-sectional view of a front end portion of a water guide passage and a jet port.

FIG. 5 is a partial plan view of a water jet propulsion boat according to a modification.

[Description of Signs] 1 Hull 3 Water Jet Pump 4 Water Jet Nozzle 10, 10A Water Conveyance Channel 11, 11A Water Jet Introducing Mechanism 12 Jet Port 13, 13A Introducing Pipe

Claims (2)

(57) [Claims] 1. A water jet propulsion ship, wherein water pressurized by a water jet pump is jetted from a water jet nozzle. Water guide passages extending substantially in the center of the hull are provided, and a spout opening toward the outside of the hull side is provided at the front end of each of the water guide passages, and is pivoted to the port side at the rear end of the hull. Freely pivoted guide
Including an inlet pipe and a driving means for rotationally driving the inlet pipe,
The inlet tube in the drive unit, the left water jet introduced obtained by enabling constructed switchable between a position not to introduce the position for introducing the rear end of the left side of the water guide passage at least over part of the water jet exiting from the water jet nozzle A mechanism is provided, and a guide rotatably pivotally attached to a starboard portion of the rear end of the hull.
Including an inlet pipe and a driving means for rotationally driving the inlet pipe,
The inlet tube in the drive unit, at least a portion switchable between a position not to introduce the position for introducing the rear end portion of the right side of the water guide passage configured to be capable to right waterjet inlet comprising a water jet exiting from the water jet nozzle and a mechanism, water jet away docking auxiliary apparatus characterized by. 2. Water pressurized by a water jet pump
It is configured to eject from the water jet nozzle
In a water jet propulsion ship , water jets are provided inside the hull on both left and right sides of the hull.
Water conveyance from near the nozzle to approximately the center in the longitudinal direction of the hull
Channels are provided at the front end of each of the headrace passages and open outward from the side of the hull.
A spout, and a guide rotatably connected to the rear end of the left water passage.
Including an inlet pipe and a driving means for rotationally driving the inlet pipe,
Drive the introduction pipe from the water jet nozzle
At least a part of the exiting water jet is
Switch between the position where it is introduced at the rear end of the road and the position where it is not introduced
Left water jet introduction mechanism
And a guide rotatably connected to the rear end of the right water passage.
Including an inlet pipe and a driving means for rotationally driving the inlet pipe,
Drive the introduction pipe from the water jet nozzle
At least a part of the exiting water jet will be
Switch between the position where it is introduced at the rear end of the road and the position where it is not introduced
Right water jet introduction mechanism
Water jet-type docking and landing support characterized by the fact that it was provided
Auxiliary equipment.