JPS5975900A - Detachable steering device for ship coming alongside or leaving pier - Google Patents

Abstract

PURPOSE:To simplify operation in which a ship leaves or comes alongside a pier, by a method wherein devices, each provided in the lateral direction of a ship with a propeller, are vertically movably mounted to a ship hull, and the ship is moved rightwardly or leftwardly through rotational drive of the propellers. CONSTITUTION:Devices 1 and 2, each provided in the lateral direction of a ship hull with a propeller 4, are vertically movably mounted to the bow and the stern of a ship hull or arbitrary positions of the ship hull. The propeller 4 is rotated forwardly or reversely through hydraulic drive or with the aid of an electrically driven motor. The vertical movement of the devices 1 and 2 is effected through the working of a hydraulic cylinder. Thus, when a ship leaves or comes alongside a pier, the devices 1 and 2 are lowered and the propellers 4 are protruded out of the ship hull. Rotation of the propellers 4 permits rightward or leftward movement of a ship.

Description

[Detailed Description of the Invention] When a conventional ship approaches a quay to leave a berth, it involves a combination of complex operations such as repeatedly making complicated maneuvers to approach the quay, pushing against the quay using a varnished boat, or pulling the vessel with a pull-out mooring line. Requires a large number of people. Some side thrusters
Although there are ships equipped with this, it is impossible to move sideways except for special ships, and in the conventional type built into the hull, the inlet and drain holes, which should only be used when in use, create great resistance during sailing, resulting in large losses. occurs. When this device is attached to the front and rear of the hull, this invention allows the ship to move completely sideways, making it very easy for the ship to approach and leave the berth, and it can also be used in places where there are no varnished boats or in places with tidal currents. Even if the wind direction is bad, the ship can be easily berthed and berthed, and it can also be berthed even in a place that is as long as the entire length of the ship.
60° direction change is possible. Also, during voyage, it can be completely stored inside the ship, and there is almost no resistance from water, so there is almost no loss during voyage. This machine can be used to stay stationary even in places with strong currents and strong winds. In addition, in the case of shallow water, the conventional method would suck in air from the inflow hole and spin idly, making it almost ineffective, but since the two devices are installed from the bottom of the ship, this fear has been completely eliminated.

Next, the present invention will be specifically explained based on the drawings. In operation, the entire device shown in Figure 1 is lowered, the propeller portion is pushed out from inside the ship, and the propeller is rotated forward and backward to move the ship to the right or left.

Next, there are two possible ways to rotate the propeller shown in Figure 2 (■). First, when using hydraulic pressure as power,
Light oil is used in the flexible hose to send high hydraulic pressure to the hydraulic motor in ■ to drive the propeller. (For hydraulic pressure,
(Not required) Also, when using electricity as power, use the cabtire cable in ■ to rotate the electric motor in ■, and use the reduction gear in ■ to drive the propeller in ■. As for the installation location of this device, as shown in Figure 1, penetrate a hole large enough to fit the device in Figure 2 into any desired location on both the ship and the carp, and make the hole on the hull side completely watertight. . The device shown in Figure 2 and the hull are assembled as completely different things. The device shown in Figure 2 and the ship's hull are connected using a hydraulic jack (■), and the propeller part of the device shown in Figure 2 is used when using the expansion and contraction of the hydraulic jack (■) when docking or leaving the berth. If the device is stored so that it protrudes below the bottom of the ship, the device shown in Figure 2 will be completely flush with the bottom of the ship.

What are the advantages of actually using the device shown in Figure 2?

Not only this device, but also equipment such as side thrusters are often used in ports, and floating objects can get into the propeller and cause damage to the propeller. Only the equipment can be removed for repair, maintenance and inspection on land.

[Brief explanation of the drawing]

Figure 1 is a plan view of the position when the device is in use, stored, and installed.
Figure 2 is a detailed diagram of the inside of the device Masayuki procedural amendment (method) 1. Indication of the incident Patent Application No. 188331 of 1988 2. Title of the invention Detachable ship berthing control device 3. Person making the amendment 5. Target of amendment: Appropriate application specification in general (typed print) Drawings (deletion of explanatory characters in Figure 1)

Claims (1)

[Claims] What kind of situation (wind level, wind force,
It is possible to move at a desired constant speed in the left and right directions even in the midst of currents (tidal currents, etc.). It can also stand still at any position on the sea. A device that can be installed, removed, repaired and inspected without having to lift the ship, does not spin even on ships with little water, and can be stored inside the ship during voyage with almost no resistance to water.