JPS61135894A - Sail setting device - Google Patents

Abstract

PURPOSE:To eliminate turbulent air occurring in the back of a sail and maintain the most appropriate angle of the sail against the direction of a wind by stretching wires for expanding or contracting/a soft sail over a pair of masts traveling by themselves on rails and by providing a pair of winding means respectively on each mast. CONSTITUTION:On both sides of a deck 4 a pair of rails 5, 5a are layed, on which rails a pair of trucks 6, 6a are mounted to travel freely thereon, on which truck 6 a mast 7 having a winding device 11 and on which truck 6a a mast 7a having a winding device 11a are installed perpendicularly, and between which masts 7, 7a is provided a soft sail 10 whose top and bottom are contractably supported by wires 12, 12a. At sea, the soft sail is set to make the trucks 6, 6a travel on the rails freely in the front or rear direction of the ship according to the variations of the direction of a wind and an air current.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to sail equipment for ships.

[Conventional technology]

Recently, as an energy-saving ship, a method has been adopted to attach sail rigging to a mobile ship and use wind power as a propulsion force to assist maneuverability during a voyage, thereby reducing fuel consumption. The number of ships is increasing. Sails used include soft sails and rigid sails, and although these devices are still experimental in shape, sail systems with rigid or semi-rigid sails are often used for energy-saving ships.

[Problem that the invention seeks to solve]

There were the following problems with this type of sailing device.

(1) As shown in Figure 4, the ninth post 2, which supports the movement (force) on the sail 1, is located in the center of the sail 1. As shown in arrow 3,
This creates turbulence, which reduces thrust.

(2) When increasing the area of the sail 10 to increase thrust with sail rigging, there is a limit to how much sail rigging can be increased due to the strength of the crossbeams, so it is necessary to increase the height of the sail. There is a problem with instability.

(3) When navigating with only maneuverability without using sails, the sail 1 is folded around the support 2, but since it is not completely stored, it is subject to air resistance, which increases the fuel consumption of maneuver (
Become.

[Means for solving problems]

In order to solve the above-mentioned problems, the present invention has proposed a system in which a rope for expanding and retracting a soft sail is strung across a pair of two masts that are self-propelled on rails on the ship's side, and a soft sail winding device is attached to one or both of the masts. 〇〇〇〇〇〇〇〇〇〇〇〇〇〇〇〇〇〇〇〇〇〇〇〇〇〇〇〇〇〇〇〇〇〇〇〇〇〇〇〇〇〇　〇〇〇　〇　〇　〇　〇　〇　〇　〇　〇　〇　〇　〇　〇　〇　〇　Function〕] self-propelled masts to the sailing system of the sailing system to the sailing system on which the masts are sailing. The sails can be completely reeled in when stowed, and furthermore, when a ship enters port and carries out cargo handling, the entire sail system can be moved so as not to interfere with cargo handling.

〔Example〕

FIG. 1 is a schematic diagram of an embodiment of the present invention. In the figure, rails 5 and 5a are laid on both sides of the ship's deck 4,
Carts 6 and 6a are fitted on the rails 5 and 5a, respectively, so that they can run freely, and a winding device 11 is provided on the cart 6, and a winding device 11 is mounted on the mast 7 and the cart 6. A mast 7m equipped with f11a is erected, and a soft sail 10 is deployed astride the masts 7 and 7a and is guided upward and downward by wires 12 and 12&.

ing.

FIG. 2 is a detailed view showing how the carriage 6.6a and the rails 5 and 5a are fitted together.

In the figure, a horizontal roller 8 is provided on the top surface of one rail 5, and horizontal rollers 9, 9a are provided on both sides of the bottom surface, and the rail 5 is slidable along the V-rule 5, but is prevented from coming off upward. Although not shown, the trolleys 6 and 6a are provided with a locking device so that they can be fastened to the rails 5 and 5a at arbitrary positions.

Next, the operation of the embodiment of the present invention will be explained. While the ship is sailing,
As shown in Fig. 1, the soft sail 10 is extended, and the carts 6 and 6& of the masts 7 and 7a are freely moved in the longitudinal direction of the ship on the rails 5 and 5a according to changes in wind direction and airflow. By doing so, the angle of the sail 10 with respect to the wind and air flow can be adjusted to always obtain the maximum effect on thrust.

Also, since there is no support at the center of the sail unlike in the conventional sail, there is no thrust cancellation caused by turbulence. Moreover, when sailing with only maneuvering power, the soft sail 10 is completely wound up on either the mast 7 or 7 & by the winding device 11 or 11a, so there is no wind resistance and the fuel consumption of maneuver is reduced. It never increases.

Furthermore, when the ship enters a port and carries out cargo handling, the masts 7 and 7a may be moved rearward from the hatch cover 13 as shown in FIG. It is possible.

Although this embodiment shows a case where both masts are provided with winding devices, the present invention is not limited to this, and either mast is equipped with a winding device for the sail expansion and contraction ropes, rather than a winding device. You can also use it as

〔Effect of the invention〕

According to the present invention, it is possible not only to maintain the most appropriate angle with respect to the wind direction without generating turbulence behind the sail, but also to facilitate cargo handling on a ship.

[Brief explanation of drawings]

Fig. 1 is a schematic diagram of an embodiment of the present invention, Fig. 2 is a detailed diagram of the fitted state of the trolley and rail according to the same embodiment, Fig. 3 is a diagram of the state of the mast during cargo handling, and Fig. 4 is a conventional diagram. FIG. 2 is a schematic diagram showing the relationship between sail equipment and airflow. 1: sail, 2: prop, 3: airflow, 5.5m: rail, 6
．． 6a: Trolley, 7.7m: Mast, 8: Horizontal roller, 9
: horizontal roller, 10: soft sail, 11.11a: winding device,
12.12a: wire, 13: hatch cover, 14:
Hatsuchi.

Claims (1)

[Claims] Rails are provided on both sides of the ship, self-propelled masts are mounted on each rail, and a soft sail is stretched between the masts using cables for expanding and retracting the soft sail, and one or both masts are attached to one or both masts. A sailing device characterized by being equipped with a soft sail winding device.