JPH0370696A - Quick turnable quick stoppable and transversely movable ship - Google Patents

Abstract

PURPOSE:To attain a quick turn and a quick stop by providing two sideward injecting pipes, which are longitudinally parallelly positioned to traverse through a ship body, and screw blades, which are longitudinally positioned so as to make injectable in the opposite direction to each other and the blade normally and reversely rotatable, in the inside of the injecting pipes. CONSTITUTION:A pair of right and left bow resistance plates 4a, 4b, possible to open and close to right and left by a hinge 5, are pivotally mounted to the bow of a ship body, while a pair of front and rear sideward injecting pipes 10a, 10b, which traverse through the ship body 1, are parallelly provided in a direction orthogonal with an advancing direction of the ship body 1. In the center part of each injection pipe 10a, 10b, screw blades 11a, 11b are arranged, and these blades can be turned by power of a prime mover 3, which turns a propelling screw 2, through a drive shaft 12, inverting device 7 having a gear box 13, chain 14 and a drive shaft 15. While the screw blades 11a, 11b can be rotated in the same direction by an inverting device 16 interposed in the drive shaft 15.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a ship capable of making sharp turns and sudden stops.

(Prior art) Vessels are turned by operating a rudder installed at the stern, but it is impossible to make a sudden turn or stop a heavy vessel while it is underway to avoid the risk of collision during navigation. there were.

(Problem to be solved by the invention) Therefore, it is necessary to provide a ship that can make sudden turns and sudden stops even in large ships, and can avoid dangers such as collisions in a short period of time, especially in the event of an emergency, thereby contributing to the safety of maritime traffic. The purpose is to

(Means for solving the problem) Two parallel side injection pipes are provided that cross and penetrate the hull, and water can be injected in opposite directions at the front and back into the center of the side injection pipes. , and equipped with a screw blade that can rotate forward and backward, making it possible to make sharp turns.

Further, a bow resistance plate is provided which is pivotally attached to the bow of the hull and can be opened and closed individually, so that sudden braking can be applied from the bow side by fully opening the bow resistance plate.

Furthermore, a reversing device was installed on the drive shaft that moved the screw blades in the front and rear side injection pipes, allowing the front and rear screw blades to rotate in the same direction, making lateral movement possible.

(Example) In FIG. 1, 1 is the hull. 2 is a propulsion screw attached to the rear of the hull 1, which is driven by a prime mover 3 installed inside the hull via a speed reducer (not shown)* 4a,
Reference numeral 4b denotes a bow resistance plate, which is pivotally connected to the neck of fIr1 by a hinge 5 so as to be able to open and close left and right. Bow resistance plate 4a,
4b can be opened and closed both at the same time or only one of them. Its operation is performed by the power of the prime mover 3. That is, it is opened and closed by the prime mover 3, the drive shaft 6, the clutch 7, the bow resistance plate opening/closing device 8, and the resistance plate operating shafts 9a and 9b. Note that the bow resistance plates 4a and 4b are formed so as to be in close contact with the bow portion when not in operation to minimize resistance.

Reference numerals 10a and 10b are side injection pipes that are provided perpendicularly to the traveling direction of the hull 1, passing through the hull in parallel to each other in the front and rear. At this center are screw blades 11a, l.
lb is installed. The front screw blade 11a is simultaneously driven forward and backward by the prime mover 3 via the drive shaft 12, clutch 13, chain 14, and drive shaft 15, and can be rotated in forward and reverse directions by switching the lever of the clutch 13.

16 is a reversing device, and by switching this device, the front and rear screw blades 11a are rotated.

11b can be rotated in the same direction. When the screw blades are turned in the same direction, the side injection pipe 10a.

The direction of the water jetted from 10b becomes the same, allowing the ship to move laterally, which is convenient when berthing.

Furthermore, the front screw blade 11a and the rear screw blade L
lb is attached to the front and rear of the drive shaft 150, and the screw blades 11a are attached to the front and rear of the drive shaft.

In the above configuration, the configuration of the clutch and speed reducer, the arrangement of the drive shaft, etc. can be selected as appropriate depending on the internal configuration of the hull. It goes without saying that clutch switching and the like can be done by remote control.

(Operation method) 1) Ordinary straight sailing; As shown in Figure 1, the bow resistance plates 4a and 4b are closed and in close contact with both sides of the bow, the screw blades 11a and 11b are stopped, and the vessel is sailed using only the screw 2. Although not shown, a rudder is provided near the propeller 2 at the stern, similar to known ships, for steering.

2) Turning to the right (Fig. 2): When the bow resistance plate 4a is opened by operating the left clutch 7, a rightward turning moment is applied due to the resistance on the resistance plate 4a, so the boat can turn to the right.

When you want to make a sharp turn to the right, use the side injection pipe 10a.

When the screw blades 11a and llb in 10b are rotated to cause jets to flow in opposite directions as shown in Fig. 2, a moment M8 in the right turning direction acts around the ship's center of gravity as shown in Fig. 2, and the resistance at the bow is increased. Coupled with the action of the plate 4a, it is possible to rapidly turn to the right.

3) Turning to the left (Fig. 3): When the bow resistance plate 4b is opened to the right, the pll receives a turning moment to the left due to the resistance acting thereon, and can turn to the left. Especially when you want to make a sharp turn to the left, the screw blades 11a in the side injection pipes 10a and 10b.

If 11b is rotated in the opposite direction to that shown in FIG. 2, water will be ejected as shown in FIG. 3, and as a reaction, the receiver will turn to the left due to the leftward turning moment MR.

4) Sudden stop: Both bow resistance plates 4a and 4b are fully opened to achieve maximum resistance. Of course, reverse rotation of the rear propulsion screw 2 is also used.

(Effects) Screw blades that can inject water in opposite directions at the front and back and can rotate in forward and reverse directions are installed in the two side injection pipes that penetrate the hull laterally, so when trying to make a sharp turn. If they are injected laterally in opposite directions, a turning moment is generated and the ship can turn around the center of gravity, which is suitable for avoiding emergencies.

In addition, bow resistance plates are installed on both sides of the neck of the hull that can be opened and closed individually or simultaneously, so opening and closing these plates increases fluid resistance, which, combined with the injection from the side injection pipes, facilitates sharp turns. be able to. Since they can be opened and closed individually at the same time, it is possible to make steeper turns than before, not only when making sharp turns.

Furthermore, since the screw blades in the side injection pipes can be rotated in the same direction, the ship can also move laterally, which is suitable for when berthing.

[Brief explanation of drawings]

FIG. 1 is a plan view of a ship equipped with the present invention. The second UA is a diagram showing how each part operates when turning right. FIG. 3 is a diagram showing how each part operates when turning. Figure 4 shows the state of the resistance plate when the ship suddenly stops. FIG. 5 is a side view of a ship equipped with the present invention. In the figure: 1 Hull 2 Screw 3 M motive 4a, 4b Bow resistance plate 5 Hinge 6 Drive shaft 7 Clutch 8 Bow resistance plate opening/closing device 9a, 9b Resistance plate operation shaft ], Oa, Job
Side injection pipe 11a, Ilb Screw blade 12 Drive shaft 13 Clutch 14 Chain 15 Drive shaft 16 Reversing device

Claims (3)

[Claims] (1) Two parallel side injection pipes are provided that cross and penetrate the hull, and water can be injected in opposite directions at the front and back into the center of the side injection pipes, and they can be rotated in forward and reverse directions. A ship capable of sudden turns, sudden stops, and sideways movement, characterized by the provision of screw blades. (2) A ship capable of sudden turns, sudden stops, and sideways movement according to claim (1), further comprising a resistance plate of the same type as the bow, which is pivotally attached to the neck of the ship and can be opened and closed individually. (3) A sharp turn according to claim (1), characterized in that a reversing device is provided on the drive shaft that drives the screw blades in the front and rear side injection pipes, so that the front and rear screw blades can rotate in the same direction. A vessel capable of sudden stopping and sideways movement.