CN109703724B

CN109703724B - Sail mooring system

Info

Publication number: CN109703724B
Application number: CN201811491677.4A
Authority: CN
Inventors: 张倩; 陈立; 郭小天; 李文贺; 刘国磊; 彭贵胜; 李嘉换; 胡颖楠; 侯玉品; 钱静; 张欣欣; 马辉; 郭艳华
Original assignee: Dalian Shipbuilding Industry Co Ltd
Current assignee: Dalian Shipbuilding Industry Co Ltd
Priority date: 2018-12-07
Filing date: 2018-12-07
Publication date: 2020-10-16
Anticipated expiration: 2038-12-07
Also published as: CN109703724A

Abstract

The invention discloses a sail mooring system which comprises a recovered sail and a cable for fixing the sail, wherein four sail eye plates are arranged at the joint of transverse and longitudinal frameworks of the sail, are positioned on the same plane parallel to a deck and are four vertexes of a small rectangle; four deck eye plates corresponding to the sail eye plates are arranged on the deck, and the four deck eye plates are four vertexes of a large rectangle; the small rectangle is positioned in an area surrounded by the large rectangle, and the sides of the large rectangle and the small rectangle are correspondingly parallel; the four deck eye plates and the four wind sail eye plates are connected in a one-to-one mode through four cables according to the corresponding principle of the vertexes of the large rectangle and the small rectangle. By adopting the system, the damage of the sail to the base can be greatly reduced, and cables can be saved.

Description

Sail mooring system

Technical Field

The invention relates to the technical field of mooring of sail ships, in particular to a mooring system of a recovered sail.

Background

The application of wind energy resources on ships is increasingly emphasized. As shown in the attached fig. 1, the sail 1 is fixed on the mast 2, the mast 2 is fixed on the base 3 below, and the wind force acts on the ship through the sail 1, the mast 2 and the base 3 so as to provide the ship with forward power. But after the recovery of the sail 1, the mast 2 is not required to continue to provide the base 3 with force, but rather the force should be as low as possible to avoid unnecessary damage to the base 3. In the prior art of wind sails, how to tether a wind sail 1 with a height still exceeding 15m on a ship after being recovered is generally to tie the whole wind sail 1 by directly using a cable 7 and then to tether the whole wind sail 1 on a mooring bollard 4, and such a manner of mooring leads to an overlong cable 7 on one hand and leads to the wind stress on the wind sail 1 and then the wind stress is conducted to a base 3 through a mast 2 on the other hand, which is very easy to damage the base 3.

Disclosure of Invention

The invention aims to provide a sail mooring system which can solve the problems in the background art.

In order to achieve the purpose, the invention adopts the following technical scheme:

a sail mooring system comprises a recovered sail (the sail is foldable, can be unfolded and extended towards the vertical direction in real use, and can be folded into a recovery form with a lower height after recovery, and the sail is the recovered sail unless specifically stated in the patent) and a cable for fixing the sail; four sail eye plates are arranged at the joints of transverse and longitudinal frameworks of the sail (the interior of the sail is formed by interweaving the frameworks in a transverse and longitudinal mode, and the transverse and longitudinal frameworks have joint nodes, namely the joints), are positioned on the same plane parallel to the deck and are four vertexes of a small rectangle; four deck eye plates corresponding to the sail eye plates are arranged on the deck, and the four deck eye plates are four vertexes of a large rectangle; the small rectangle is located in the area enclosed by the large rectangle (actually, the scene in the top view, because the two rectangles are in different planes), and the sides of the large rectangle and the small rectangle are correspondingly parallel; the four deck eye plates and the four wind sail eye plates are connected one by one through four cables (one cable corresponds to one pair of eye plates) according to the corresponding principle of the vertexes of the large rectangle and the small rectangle (as the corresponding sides of the two rectangles are parallel, the corresponding vertexes are easily determined through the corresponding sides, so that the corresponding vertexes are connected through the cables).

Preferably, the included angle between the four cables and the deck (i.e. the plane of the deck, the same applies hereinafter) is in the range of 45-60 degrees (including the boundary point).

Preferably, the included angles between the four cables and the deck are the same.

Preferably, the linear distance between the wind and deck eye plates connected by the same cable (with respect to different pairs of wind and deck eye plates) is the same.

Preferably, the length L of any cable and the linear distance d between the wind sail eye plate and the deck eye plate connected with the cable all satisfy the following relation: l is more than d and less than or equal to 2 d. (thus, the sail is not completely fixed and can move slightly to distribute the stress)

Preferably, the four cables are all the same length.

Preferably, the height H of the sail eye plate from the deck and the height H of the top end of the recovered sail from the deck satisfy the following relation: h is more than or equal to 0.6H and less than or equal to H.

Preferably, one side of the small rectangle is parallel to the transverse extension of the sail (the sail is of a planar configuration, perpendicular to this plane being the direction of the force of the wind on the sail). 0.3W < s < 0.5W.

Preferably, the angle between the projection of the cable on the deck (i.e. equivalent to the projection on the plane of the eye plate of the sail, since the plane of the eye plate of the sail is parallel to the deck) and the transverse extension of the sail is in the range 55 ° to 70 ° (including the boundary points).

Compared with the prior art, the invention has the advantages that the sail is directly bound and tied on the mooring bollard, the sail as a whole is completely dependent on the base and cannot deform per se, so that the sail can transmit stress to the base once being blown by wind, and the base is easily damaged (the stone is fixed on a column as if the stone transmits acting force to the column once being subjected to acting force); the system only fixes a plurality of important parts on the sail by cables, and the sail cannot be completely fixed at a fixed point because of surplus length of the cables, so that the sail can swing a small amount of the sail when the wind blows, and the damage to the base can be reduced by dispersing a large part of stress (as if a pile of sand is fixed on a column, even if the sand is subjected to acting force, the deformation of the sand can absorb a part of the acting force and cannot be completely transmitted to the column). In addition, the cable length required for such a system is relatively short, thereby saving cable.

Drawings

FIG. 1 is a schematic illustration of a prior art sail mooring system;

FIG. 2 is a front view of the sail mooring line system of the present invention;

FIG. 3 is a cross-sectional view taken along plane A-A of FIG. 2 (the same as the top view);

fig. 4 is a schematic view of an eye plate and cable of the present invention.

In the figure, 1, sail, 2, mast, 3, base, 4, bollard, 5, deck eye plate, 6, sail eye plate, 7, cable, 71, shackle, 72, first collar, 73, first wire rope clip, 74, wire rope, 75, turnbuckle, 76, second collar, 77, second wire rope clip, 8, deck.

Detailed Description

The following describes embodiments of the present invention with reference to the drawings.

Fig. 2 shows a front view of the sail mooring system of the present invention, with the sail 1 secured to the mast 2 and the mast 2 secured to the underlying base 3. Meanwhile, it can be seen that lines interwoven in the transverse and longitudinal directions are drawn on the sail 1, which represent the framework of the sail 1, nodes are formed at the joints of the framework, and the sail eye plates 6 are arranged at the nodes; meanwhile, a deck eye plate 5 is arranged on the deck 8, and the wind sail eye plate 6 and the deck eye plate 5 are connected through a cable 7.

Fig. 3 is a cross-sectional view taken along plane a-a of fig. 2, viewed in plan. As can be seen, the four wind sail eye plates 6 are located on the same plane parallel to the deck 8 and have four vertices of a small rectangle; the deck eye plate 5 is also provided with four vertexes which are a large rectangle; the sides of the large rectangle and the small rectangle are correspondingly parallel, and the small rectangle is just positioned in the middle of the large rectangle; the four deck eye plates 5 and the four wind sail eye plates 6 are connected one to one by four cables 7 in a manner that the vertexes of the large rectangle and the small rectangle correspond to each other.

Fig. 4 includes the deck eye plate 5, the wind sail eye plate 6 and the cable 7, and it can be seen that, on the side of the wind sail eye plate 6, the cable 7 is provided with a shackle 71 connected to the wind sail eye plate 6, and a first collar 72 and a first wire rope clip 73 extending therefrom, and on the side of the deck eye plate 5, the cable 7 is provided with a turnbuckle 74, a second collar 75 and a second wire rope clip 76 in sequence; a wire rope 77 is connected between the second wire rope clamp 76 and the first wire rope clamp 73. Of course, this is only one design form of the cable 7.

Although a rough mooring system is described above, different parameters may produce different systems and different effects, and the optimal position of the sail mooring line and mooring line system may be calculated by finite element analysis under wind, inertial and gravity loads, involving the following specific conditions or parameters:

1) the included angles of the four cables 7 and the deck 8 are the same and are in the range of 45-60 degrees.

2) The lengths L of the four cables 7 are the same, and the linear distances d between the wind sail eye plates 6 and the deck eye plates 5 connected with the cables 7 are also the same, and the following relations are provided: l is more than d and less than or equal to 2d,

3) the height H of the sail eye plate 6 from the deck 8 and the height H of the top end of the sail 1 from the deck 8 satisfy the following relation: h is more than or equal to 0.6H and less than or equal to H.

4) One side of the small rectangle is parallel to the transverse extension direction of the sail 1 (this direction is identified in fig. 3, and the direction perpendicular thereto is the wind action direction), and the length s of this side and the maximum width W of the sail 1 in the transverse extension direction satisfy the following relationship: 0.3W < s < 0.5W.

5) The projection of the cable 7 on the deck 8 and the transverse extension direction of the sail 1 form an included angle of 55-70 degrees.

The arrangement of the scheme can reduce the overlarge vertical bending moment caused by the action of wind load on the sail surface 1, so that the bending moment is reduced to 30 percent of the original bending moment; therefore, the scheme of the invention not only can meet the requirements of the sail mooring rope with the structure higher than 15m, but also can reduce the vertical bending moment, so that the structure is safer.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.

Claims

1. A sail mooring system comprises a recovered sail and cables for fixing the sail, and is characterized in that four sail eye plates are arranged at the joint of transverse and longitudinal frameworks of the sail, are positioned on the same plane parallel to a deck and are four vertexes of a small rectangle; four deck eye plates corresponding to the sail eye plates are arranged on the deck, and the four deck eye plates are four vertexes of a large rectangle; the small rectangle is positioned in an area surrounded by the large rectangle, and the sides of the large rectangle and the small rectangle are correspondingly parallel; the four deck eye plates and the four wind sail eye plates are connected in a one-to-one mode through four cables according to the corresponding principle of the vertexes of the large rectangle and the small rectangle.

2. The sail mooring line system according to claim 1, wherein the four cables are each included at an angle in the range of 45 ° to 60 ° with respect to the deck.

3. The sail mooring system according to claim 1 or 2, wherein the four cables are all angled at the same angle to the deck.

4. The sail mooring system of claim 1, wherein the linear distance between the sail eye panels and the deck eye panels connected by the same cable is the same.

5. The sail mooring system according to claim 4, wherein the length L of any one of the cables and the linear distance d between the sail eye plate and the deck eye plate to which it is connected satisfy the following relationship: l is more than d and less than or equal to 2 d.

6. The sail mooring system according to claim 1 or 5, wherein the lengths L of the four cables are all the same.

7. The sail mooring system according to claim 1, wherein the height H of the sail eye plate from the deck and the height H of the top end of the sail from the deck after recovery satisfy the following relationship: h is more than or equal to 0.6H and less than or equal to H.

8. The sail mooring system according to claim 1, wherein one side of the small rectangle is parallel to the transverse extension of the sail.

9. The sail mooring system according to claim 8, wherein a length s of one side of the small rectangle parallel to the transverse extent of the sail and a maximum width W of the sail in the transverse extent satisfy the following relationship: 0.3W < s < 0.5W.

10. The sail mooring system according to claim 1, wherein the angle between the projection of the cables onto the deck and the transverse extension of the sail is in the range 55 ° to 70 °.