A tiltable sail device

Abstract

The present invention belongs to the field of marine engineering technology, and specifically relates to a tiltable sail device, comprising a sail body, a common base and a driving assembly for adjusting the inclination angle of the sail body, the sail body being rotatably connected to the common base through a flip support assembly; the sail body comprises a sail blade and a mast seat, and a wire rope connector is provided on the back of the sail blade; the driving assembly comprises a pushing device for a first rotation process of the sail body and a lifting mechanism for a second rotation process of the sail body, the pushing device is a telescopic structure, and abuts against the bottom surface of the sail blade during the first rotation process; the lifting mechanism comprises a support rod and a winch, a wire rope is wound on the drum of the winch, one end of the wire rope extends out of the winch and is connected to the wire rope connector, and the wire rope abuts against the top of the support rod to change the extension angle of the wire rope.

Description

Technical Field

[0001] The present invention relates to the field of marine engineering technology, and more particularly to a tiltable sail device. Background Art

[0002] With the international community's growing demand for greener shipping, countries around the world are actively developing various energy-saving and emission-reduction technologies. Among them, with the development of information technology and modern sail theory, sail propulsion, one of the oldest energy-saving technologies, has returned to the forefront of green shipping applications. In recent years, Dalian Shipbuilding Industry Corporation (DSIC) has played a leading role in the research and development of sail propulsion systems and their application on ships. Through the Sail Phase II project, DSIC demonstrated the first application of rigid airfoil sails on very large (VLCC) oil tankers, filling a technological gap both domestically and internationally. In 2018, DSIC delivered the sail-assisted "Kaili Lun" VLCC, fully demonstrating the effectiveness of airfoil rigid sails in energy conservation and emission reduction, marking a breakthrough in my country's promotion and application of sail resources. In 2019, DSIC conducted engineering application research for the Sail Phase II project, increasing the number of airfoil sails from one pair on the "Kaili Lun" to two pairs on the "Xin Yidun" and upgrading the sail blades from metal to non-metallic carbon fiber. Onboard testing, the Phase II project demonstrated significant results in the application of sail propulsion. After years of product research and development, Dalian Shipyard has found that how to improve the lightweight and intelligent operation of sailing devices, and enhance maintenance convenience and ship applicability has become the key direction of future sail propulsion device research and development.

[0003] Rigid aerofoil sails utilize a mast and blade structure, with a lifting and slewing system enabling automatic raising and lowering of the blades and angle adjustment, effectively utilizing wind resources. However, during the raising and lowering process, the mast and blades must remain upright, making sail maintenance difficult, limiting vision during ship layout and navigation, and compromising vessel suitability. Summary of the Invention

[0004] The present invention addresses a series of problems with rigid wing-shaped sails, such as the mast and blades must be upright during the raising and lowering process, resulting in difficulties in sail maintenance, limited vision for ship layout and navigation, and poor ship applicability. The present invention provides a tiltable sail device, wherein the blades and mast of the sail device adopt a fiberglass one-piece molded structure to minimize the weight of the sail body and improve the overall strength; a common base is provided at the bottom, which accommodates a bottom rotating device to achieve sail rotation and bottom support; using the support rod structure and guide pulley provided on the common base as a fulcrum, in conjunction with a wire rope winch and a pushing device, the sail body can be converted back and forth between a 0° tilted state and a 90° upright state, achieving a 90° upright state when using wind and a 0° tilted state when abandoning wind or for maintenance, thereby solving the problem of limited vision during sail maintenance and arrangement and improving the applicability of the sail device to ship types.

[0005] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0006] A tiltable sail device comprises a sail body, a common base, and a drive assembly for adjusting the tilt angle of the sail body, wherein the sail body is rotatably connected to the common base via a flip support assembly, the flip support assembly and the drive assembly are arranged on the common base, and the drive assembly is arranged on the rear side of the sail body;

[0007] The sail body includes a sail blade and a mast seat, and a through hole is provided on the side of the mast seat; the flip support assembly is arranged on the top of the common base, and the flip support assembly includes a flip shaft and two support plates arranged parallel to each other, the body of the flip shaft is passed through the through hole, and the sides of the two support plates are provided with support holes, and the two ends of the flip shaft are inserted into the support holes and rotatably connected to the support holes; a wire rope connector is provided on the back of the sail blade;

[0008] The driving assembly includes a pushing device for the first rotation process of the sail body and a lifting mechanism for the second rotation process of the sail body. The pushing device is a telescopic structure, and the pushing device abuts against the bottom surface of the sail blade during the first rotation process; the lifting mechanism includes a support rod and a winch, and a wire rope is wound on the drum of the winch, and one end of the wire rope extends out of the winch and is connected to the wire rope connector; a guide pulley is provided on the top of the support rod, and the wire rope extending from the winch abuts against the guide pulley, and the wire rope is perpendicular to the flip axis in the horizontal direction along the winch to the wire rope connector.

[0009] In certain embodiments of the present invention, at least one pushing device is provided. Preferably, there are two groups of pushing devices, which are evenly distributed on both sides of the rear portion of the mast seat. Furthermore, the lifting mechanism can be provided between the two pushing devices.

[0010] In certain embodiments of the present invention, at least one group of lifting mechanisms (for example, one group or two groups) is provided, the number of wire rope connectors is the same as the lifting mechanisms, and the positions of the wire rope connectors are provided at the center of gravity of the sail or above the center of gravity. When the lifting mechanisms are provided as one group, the wire rope connectors are preferably provided on the center line of the sail body. When the lifting mechanisms are provided as multiple groups, the wire rope connectors are preferably evenly distributed at the same horizontal height of the sail body.

[0011] In certain embodiments of the present invention, the wire rope connector is provided with a fixing plate perpendicular to the sail body, and a small hole for connecting the wire rope is provided on the side of the fixing plate. Preferably, the wire rope connector is in the shape of a hanging ear.

[0012] In the preferred embodiment, a third vertical limit surface is provided on the common base on the front side of the sail body, and a first vertical limit surface is provided on the lower front part of the mast seat. When the sail body is in the working position, the first vertical limit surface abuts against the third vertical limit surface, and the height of the third vertical limit surface is not higher than the height of the cross-section at the bottom of the support hole.

[0013] In certain embodiments of the present invention, the third vertical limit surface is the plate surface of the limit plate, a surface of the limit block, or a structure suitable for vertically abutting the mast seat. Preferably, the structure where the third vertical limit surface is located is fixed (for example, welded) on the common base. More preferably, the structure where the third vertical limit surface is located forms an integrated structure with the common base.

[0014] In the preferred embodiment, the upper back portion of the mast seat has a second vertical limit surface, and the common base on the front side of the sail body is provided with a fourth vertical limit surface. When the sail body is in the working position, the second vertical limit surface abuts against the fourth vertical limit surface.

[0015] In the preferred embodiment, the second vertical limiting surface is a curved surface bent toward the front of the mast seat, the lower part of the back of the mast seat is a spherical arc surface bent toward the through hole, a support groove is provided on the top of the common base, and the shape of the support groove is adapted to the shape of the lower part of the mast seat, the third vertical limiting surface is the vertical surface of the support groove on the front side of the mast seat, and the fourth vertical limiting surface is the plate surface of a vertical plate extending vertically upward from the vertical surface of the support groove on the rear side of the mast seat, and the vertical plate is adapted to the shape of the second vertical limiting surface.

[0016] In a preferred embodiment, an extension surface is provided at the lower portion of the front face of the mast base, and the first vertical limiting surface is the end face of the extension surface. More preferably, both the upper and lower portions of the front face of the mast base are planes, and the through hole is provided on the side of the extension surface near the top of the extension surface.

[0017] In a preferred embodiment, both ends of the vertical plate are integrally connected to the two support plates.

[0018] In a preferred embodiment, the top of the vertical plate extends horizontally away from the sail body to the edge of the common base, bends vertically, and is integrally connected to the common base to form an equipment room between the vertical plate and the top of the common base. A top opening is provided on the top plate surface of the equipment room, and the drive assembly is arranged below the top opening.

[0019] In a preferred embodiment, a pushing rail for guiding the pushing device to slide during the first rotation process of the sail body is provided on the bottom surface of the sail blade.

[0020] In a preferred embodiment, the sail body is an integrally formed structure, and is made of a non-metallic material. Preferably, the non-metallic material is a glass fiber material or a carbon fiber material.

[0021] In the preferred embodiment, the jacking device is a screw jacking mechanism, a hydraulic cylinder jacking mechanism or an electric push rod jacking mechanism, and the support rod is a screw jacking mechanism, a hydraulic cylinder jacking mechanism, an electric push rod jacking mechanism or a fixed support rod with a non-telescopic structure.

[0022] In a preferred embodiment, the support rod is arranged to be inclined toward the winch.

[0023] In a preferred embodiment, the support rod is tilted above the winch.

[0024] The beneficial effects of the present invention are:

[0025] 1. The blades and mast of the tiltable sail device of the present invention adopt an integrally formed structure of non-metallic materials to minimize the weight of the sail body, improve the overall strength, save the sail cost, and improve the convenience and feasibility of the flipping operation.

[0026] 2. The tiltable sail system of this invention can be switched between a 0° tilted position and a 90° upright position. When using wind, the sail is held upright at 90°, enabling wind propulsion. When abandoning wind or performing maintenance, the sail can be tilted 0° to minimize the impact on the driver's field of view and vessel layout. This tiltable sail system solves the problem of limited field of view during sail maintenance and deployment, improving the sail system's adaptability to various vessel types.

[0027] 3. The technical solution of the present invention has a simple and compact structure, high safety, reliability and dependability, and the sail body and equipment are easy to maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a structural diagram of the integrated sail of the present invention;

[0029] Figure 2 It is a structural diagram of the public base of the sail;

[0030] Figure 3 It is a schematic diagram of the jacking device;

[0031] Figure 4 It is a diagram of the support rod knot and winch arrangement;

[0032] Figure 5 It is a wire rope connection scheme diagram;

[0033] Figure 6 This is a diagram of the operation process of the sail from 0° tilting to 90° upright state;

[0034] Figure 7 This is a diagram of the operation process of the sail from 90° upright to 0° tilted state.

[0035] in, Figure 1-1 This is a side view of the sail shaft. Figure 1-2 It is a side view of the sail; Figure 1-3 This is the front view of the sail; Figure 1-4 It is a top view of the sail;

[0036] Figure 2-1 This is the axial view of the common base. Figure 2-2 This is a top view of the public base. Figure 2-3 It is a side view of the public base;

[0037] Figure 3-1 It is the layout diagram of the jacking device; Figure 3-2 It is the layout diagram of the top push guide rail; Figure 3-3 The sail is in 90° upright position; Figure 3-4 This is the state of the sail’s first dumping process; Figure 3-5 It is the second state of the sail dumping process; Figure 3-6 The sail is in the 0° tilted state;

[0038] Figure 4-1 It is a side view of the support rod structure and winch arrangement; Figure 4-2 It is a top view of the support rod structure and winch arrangement (single winch); Figure 4-3 It is a top view of the support rod structure and winch arrangement (double winch);

[0039] Figure 5-1 It is the layout diagram of the wire rope connector position; Figure 5-2 It is an enlarged diagram of the front and side of the wire rope connector and the connection status;

[0040] Figure 6-1 The sail is in the 0° tilted state; Figure 6-2 It is the first upright process state of the sail; Figure 6-3 It is the second upright process state of the sail; Figure 6-4 The sail is in a 90° upright position;

[0041] Figure 7-1 The sail is in a 90° upright position; Figure 7-2 This is the state of the sail’s first dumping process; Figure 7-3 It is the state of the second tilting process of the sail; Figure 7-4 The sail is in the 0° tilted state.

[0042] In the figure, 1-sail body; 2-common base; 5-sail blade; 6-mast base; 7-turning axis; 8-support plate; 9-support hole; 10-thrusting device; 12-support rod; 13-winch; 14-wire rope; 15-wire rope connector; 16-guide pulley; 17-third vertical limit surface; 18-first vertical limit surface; 19-second vertical limit surface; 20-fourth vertical limit surface; 21-support groove; 22-equipment room; 23-top opening; 24-thrusting slide rail; 25-sail blade bottom support surface; A is connected to the wire rope connector; B is a partial enlargement of the side of the wire rope connector; C is a partial enlargement of the front of the wire rope connector; D is the direction of wind thrust. DETAILED DESCRIPTION

[0043] The sail of the present invention adopts an integrated structure, eliminating the traditional concept of a mast and blades. Instead, the blades and mast are formed integrally from non-metallic materials, collectively referred to as the hull. The non-metallic material used for the hull is preferably fiberglass or carbon fiber, significantly reducing the weight and cost of the hull. This will be further explained below with reference to the following examples and accompanying drawings.

[0044] like Figure 1 As shown, the sail is an integrated structure.

[0045] A mast base 6 is provided at the bottom of the sail body 1, and a flip axis 7 is provided on the mast base 6. The sail body 1 can be flipped 0 to 90 degrees around the flip axis. The mast base 6 is provided with a first vertical limiting surface 18 and a second vertical limiting surface 19. When the sail body 1 reaches a 90-degree upright position (working position), the vertical limiting surfaces are used to vertically limit the mast base 6 and the common base 2. The mast base 6 must ensure that the sail body 1 does not structurally interfere with the common base 2 during the 0-90-degree flipping process, and that a limiting constraint is achieved in the 90-degree upright position, thereby maintaining the sail in an upright position. Preferably, the mast base 6 is a hemispherical arc structure to improve the compactness of the base size. Preferably, the first vertical limiting surface 18 of the mast base 6 is a plane; preferably, the second vertical limiting surface 19 of the mast base 6 is a curved surface. During the process of the sail changing from a 0° tilted posture to a 90° upright posture, the flip axis 7 bears the weight and rotation function of the sail body 1; in the 90° upright posture, the sail body 1 is subjected to a horizontal forward thrust, and at this time the sail body 1 will generate a bending moment around the flip axis 7, and the bending moment is mainly transmitted to the common base 2 by the first vertical limit surface 18 and the limit surface of the common base 2, and the second vertical limit surface 19 plays an auxiliary force limiting role; in the upright posture, the gravity of the sail body 1 is mainly transmitted to the common base 2 by the mast seat 6.

[0046] like Figure 2Shown is the common base structure of the sails.

[0047] The common base 2 at the bottom contains a rotating mechanism to realize the rotation of the sail body 1 around the vertical axis, and the sail posture is adjusted according to the wind direction angle to obtain the maximum windward force effect.

[0048] A mast seat support groove 21 is provided in the middle of the common base 2. The mast seat support groove 21 is preferably a curved structure to ensure that the sail body 1 does not structurally interfere with the support groove 21 of the common base 2 during the 0-90° flipping process of the sail body. The mast seat support groove 21 is coated with grease.

[0049] A flip shaft support assembly and support hole 9, an equipment room 22, a sail blade bottom support surface 25 and other structures are set above the common base 2. The flip shaft support hole 9 cooperates with the flip shaft 7 to realize the flipping operation and bear part of the gravity load of the sail body 1 during the 0~90° flipping of the sail body; a top opening 23 is provided at the top of the equipment room 22 on the sail blade bottom support surface 25 for the equipment in the equipment room 22 and the wire rope 14 to pass through.

[0050] The mast support groove 21 at the bottom of the common base is provided with a third vertical limit surface 17, which is preferably a plane, so as to be in contact with the first vertical limit surface 18 of the bottom mast seat 6, thereby realizing the main force of the sail body under the thrust state in a 90° upright posture.

[0051] A fourth vertical limit surface 20 is set above the common base support hole 9 and between the support surface 25 of the bottom surface of the sail blade. The limit surface is preferably a curved surface, which is fitted with the second vertical limit surface 19 of the bottom mast seat 6, thereby achieving auxiliary force when the sail body is in a 90° upright posture and is under thrust.

[0052] like Figure 3 The diagram shown is a schematic diagram of the jacking device.

[0053] like Figure 3-1 As shown in Figure 3-2, a pushing device 10 is arranged in the equipment room 22 on the common base 2. The pushing device 10 can be a variety of mechanisms such as a screw lifting mechanism, a hydraulic cylinder lifting mechanism, and an electric push rod lifting mechanism. The pushing devices 10 are arranged on both sides of the equipment room 22 near the mast base 6, preferably in two sets. Preferably, two pushing guide rails 24 are provided on the bottom surface 5a of the sail blade and directly above the pushing device 10 to achieve the guiding and limiting function of the pushing device 10 in the process of pushing the sail blade 5 out.

[0054] like Figure 3-3 , 3-4, 3-5, and 3-6 show the operation process of the pushing device 10 under different flipping postures of the sail.

[0055] When the sail starts to flip from the 90° upright state, the pushing device 10 pushes out to provide an initial flipping torque to flip the sail body 1 around the flip axis, thereby realizing the first half of the flipping of the sail body 1 (the first flipping process). Figure 3-4 As shown. Figure 3-5 、 Figure 3-6 As shown, after the sail body 1 has flipped over at a large angle around the flip axis 7, the pushing device 10 is automatically disengaged from the pushing guide rail 24 on the bottom surface 5a of the sail blade, and the sail body 1 is pulled by the wire rope 14 to achieve a smooth flip in the second half of the tilting (the second flipping process). At this time, the pushing device 10 can be retracted or maintained in the pushing state.

[0056] like Figure 4 The figure shows the support rod knot and winch arrangement.

[0057] Above the common base 2, near the fourth vertical limit plane 20, the support rod 12 structure is arranged obliquely, as shown in FIG. Figure 4-1 The support rod 12 can be a variety of retractable mechanisms such as a screw jacking mechanism, a hydraulic cylinder jacking mechanism, or an electric push rod jacking mechanism, or can be a fixed, non-retractable structure. A wire rope guide pulley 16 is provided above the support rod 12. The height of the wire rope guide pulley 16 can be adjusted by a retractable support rod to ensure that the wire rope 16 does not interfere with the common base 2 structure during the tilting process of the sail body 1.

[0058] like Figure 4-2 As shown in 4-3, according to the size and weight of the sail body and the stress conditions during the dumping process, one set of support rod 12 structures can be arranged and coordinated with one winch 13, or two sets of support rod 12 structures and two winches 13 can be arranged.

[0059] like Figure 5 The figure shows the wire rope connection scheme.

[0060] A wire rope connector 15 is embedded within the sail hull 1. Preferably, the connector 15 is positioned above the sail's center of gravity and upward, along the vertical centerline of the sail hull 1. Preferably, the connector 15 is a lug-shaped structure. One end of a wire rope is connected to the connector 15 and then to the winch 13 via a guide pulley 16 at the top of the support rod 12. The winch 13 controls the opening and closing of the sail by tightening and loosening the wire rope 14.

[0061] The working process of the present invention is as follows:

[0062] like Figure 6 The figure shows the operation process of the sail from 0° tilting to 90° upright state.

[0063] like Figure 6-1As shown, the sail is in a 0° tilted state. At this time, the support rod 12 structure extends the guide pulley 16 to the working position, the winch 13 is started, and the wire rope 14 is gradually retracted to pull the sail up from the 0° tilted state.

[0064] like Figure 6-2 As shown, when the sail is pulled up to the first upright state, the pushing device 10 is extended to the highest working position, ready to receive the sail body 1. The winch 13 continues to retract the wire rope 14 to complete the flipping and uprighting operation of the sail body 1.

[0065] like Figure 6-3 As shown, when the sail is raised to the second uprighting state, the top of the pushing device 10 contacts the bottom surface 5a of the sail blade and pushes against the guide rail 24, achieving the support of the sail body 1. At this time, the winch 13 continues to retract the wire rope 14, and the pushing device 10 retracts synchronously. In this state, the uprighting of the sail is mainly based on the tension of the wire rope 14 of the winch 13, and the pushing device 10 provides auxiliary support. The two work together to ensure the safe and stable flipping of the sail body 1 at the end of the uprighting stroke.

[0066] like Figure 6-4 As shown, the sail is in a 90° upright position, the thrust device 10 is fully retracted, and the winch 13 tightens the locking wire rope 14. At this time, under the thrust of the wind, the sail is mechanically limited to the 90° upright position by the mast base 6 at the bottom of the sail and the limiting surface of the common base 7, and the winch 13 and wire rope 14 play an auxiliary tightening role.

[0067] like Figure 7-1 As shown in Figure 7-2, as the sail moves from the 90° upright position to the tilting position, the pushing device 10 extends to the bottom surface 5a of the sail blade to push the guide rail 24. As the pushing device 10 continues to extend, the winch 13 simultaneously releases the wire rope 14. In this state, the sail tilts mainly by the thrust of the pushing device 10, and the winch 13 and wire rope 14 provide auxiliary tensioning. The two work together to achieve safe and stable flipping of the sail body 1 in the early stage of the tilting process. During the first tilting process, the pushing device 10 disengages from the sail body 1, and the sail body 1 continues to flip under the action of gravity, while the winch 13 and wire rope 14 provide auxiliary tensioning.

[0068] like Figure 7-3 As shown, when the sail is in the second dumping process, the pushing device is completely separated from the sail body 1, and the sail body 1 continues to flip under the action of gravity, and the winch 13 wire rope 14 is auxiliary tightened. Figure 7-4 As shown, the sail flips to the 0° tilting state and the trip ends.

[0069] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A tiltable sail device, characterized in that: The sail body (1) comprises a sail body (1), a common base (2), and a driving assembly for adjusting the tilt angle of the sail body (1); the sail body (1) is rotatably connected to the common base (2) via a flip support assembly; the flip support assembly and the driving assembly are arranged on the common base (2); and the driving assembly is arranged on the rear side of the sail body (1); The sail body (1) includes a sail blade (5) and a mast seat (6), and a through hole is provided on the side of the mast seat (6); the flip support assembly is arranged on the top of the common base (2), and the flip support assembly includes a flip shaft (7) and two support plates (8) arranged parallel to each other, the body of the flip shaft (7) is passed through the through hole, and the sides of the two support plates (8) are provided with support holes (9), and the two ends of the flip shaft (7) are inserted into the support holes (9) and rotatably connected to the support holes (9); the back of the sail blade (5) is provided with a wire rope connector (15); The driving assembly includes a pushing device (10) for the first flipping process of the sail body (1) and a lifting mechanism for the second rotation process of the sail body (1), the pushing device (10) is a telescopic structure, and the pushing device (10) abuts against the bottom surface (5a) of the sail blade (5) during the first flipping process; the lifting mechanism includes a support rod (12) and a winch (13), a steel wire rope (14) is wound around the drum of the winch (13), one end of the steel wire rope (14) extends out of the winch (13) and is connected to the steel wire rope connector (15); a guide pulley (16) is provided at the top of the support rod (12), and the steel wire rope (14) extending from the winch (13) abuts against the guide pulley (16), and the steel wire rope (14) is perpendicular to the flip axis (7) in the horizontal direction along the winch (13) to the steel wire rope connector (15); A third vertical limiting surface (17) is provided on the common base (2) on the front side of the sail body (1), and a first vertical limiting surface (18) is provided on the lower front side of the mast seat (6). When the sail body (1) is in the working position, the first vertical limiting surface (18) abuts against the third vertical limiting surface (17), and the height of the third vertical limiting surface (17) is not higher than the height of the bottom section of the support hole (9); The upper portion of the back side of the mast seat (6) is provided with a second vertical limiting surface (19), and the common base (2) on the front side of the sail body (1) is provided with a fourth vertical limiting surface (20). When the sail body (1) is in the working position, the second vertical limiting surface (19) abuts against the fourth vertical limiting surface (20); The second vertical limiting surface (19) is a curved surface bent toward the front of the mast seat (6); the lower back of the mast seat (6) is a spherical arc surface bent toward the through hole; a support groove (21) is provided on the top of the common base (2); the shape of the support groove (21) is adapted to the shape of the lower portion of the mast seat (6); the third vertical limiting surface (17) is the vertical surface of the support groove (21) on the front side of the mast seat (6); the fourth vertical limiting surface (20) is the surface of a vertical plate extending vertically upward from the vertical surface of the support groove (21) on the rear side of the mast seat (6); the vertical plate is adapted to the shape of the second vertical limiting surface (19).

2. The tiltable sail device according to claim 1, characterized in that: The two ends of the vertical plate are integrally connected to the two support plates (8).

3. The tiltable sail device according to claim 2, characterized in that: The top of the vertical plate extends horizontally away from the sail body (1) to the edge of the common base (2), is vertically bent, and is integrally connected to the common base (2), and forms an equipment room (22) between the vertical plate and the top of the common base (2). A top opening (23) is provided on the top plate surface of the equipment room (22), and the drive assembly is arranged below the top opening (23).

4. The tiltable sail device according to claim 3, characterized in that: The bottom surface (5a) of the sail blade is provided with a pushing rail (24) for limiting and guiding the sliding of the pushing device (10) during the first turning process of the sail body (1).

5. The tiltable sail device according to claim 4, characterized in that: The sail body (1) is an integrally formed structure, and the sail body (1) is made of non-metallic material.

6. The tiltable sail device according to claim 1, characterized in that: The jacking device (10) is a screw jacking mechanism, a hydraulic cylinder jacking mechanism or an electric push rod jacking mechanism, and the support rod (12) is a screw jacking mechanism, a hydraulic cylinder jacking mechanism, an electric push rod jacking mechanism or a fixed support rod of a non-telescopic structure.

7. The tiltable sail device according to claim 1, characterized in that: The support rod (12) is arranged to be inclined toward the winch (13).

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