CN117382860A - Passive sail rotation control device - Google Patents

Abstract

The invention discloses a passive sail rotation control device, which includes two sail control mechanisms. The two sail control mechanisms are arranged at intervals on the sides of the mast from top to bottom, and are used to control the clockwise and clockwise directions of the mast respectively. The angle of counterclockwise rotation includes a base plate fixed on the hull, a number of blocks, a number of elastic members and a gear rod assembly. Each of the blocks is spaced along the radial direction of the mast and is slidably arranged on the mast. on the substrate. The beneficial effects of the present invention are: the sail reaches balance under the action of wind force and the compression elastic force of the elastic member, and forms a certain angle with the wind direction, that is, the sail's angle of attack, thereby generating lift resistance and achieving the effect of thrust to assist navigation. In this process, no It consumes no energy and achieves zero-power sail turning operation, achieving better energy saving and emission reduction effects. It solves the problem of being unable to turn the sail due to small starting force when there is light wind or small wind direction angle, and also takes into account strong wind or large wind direction angle. The system is overloaded.

Description

A passive sail rotation control device

Technical field

The invention relates to the technical field of ship sail navigation aids, and in particular to a passive sail rotation control device.

Background technique

Ship sail aid is a technology that uses wind power to improve ship power and save fuel. The advantage of ship sail aid is that it can reduce the fuel consumption and emissions of the ship, increase the speed and stability of the ship, and reduce the operating cost and maintenance of the ship. cost. The principle of ship sail navigation is to install one or more rotatable sails on the deck of the ship, and automatically adjust the angle and position of the sails according to the wind direction and speed, thereby providing additional thrust to the ship. Whether it is a soft sail or a hard sail, when it forms a certain angle with the wind direction (or called the angle of attack), it will generate lift and drag on the sail surface. The sum of the components of lift and drag in the sailing direction of the ship is The thrust that propels a ship forward. As shown in Figure 1 of the existing sail, the sail 100 includes a mast 110 and a canvas 120. The lower end of the mast 110 is rotatably mounted on the hull 1, and the canvas 120 is fixed on the upper end of the mast 110.

If the mast can rotate freely, then the sail will automatically deflect to the downwind position like a flag, that is, the position with the smallest moment, but at this time the angle of attack is zero and the sail does not produce thrust. In order for a sail to generate thrust, additional reverse torque needs to be applied to the mast or sail surface to form an angle of attack with the wind direction. The reverse torque can be generated actively, such as with servo motor control, or passively, such as with an additional jib sail. Existing sail navigation aids (such as a movable sail and a sail adjustment method disclosed in the application number 202111500132.7) use servo motors to actively control the rotation of the sail, which requires the consumption of electrical energy or chemical energy to obtain the force to drive the rotation of the sail. Therefore, it is not conducive to improving the effect of energy saving and emission reduction. In addition, an additional jib is used to control the rotation of the sail. Because the sail damping is usually a constant value, it is difficult to start when the wind direction is small, and it is easy to overload when the wind direction is large. Therefore, it is urgently needed. A passive sail rotation control device realizes passive adjustment of the sail angle.

Contents of the invention

The purpose of the present invention is to overcome the above technical shortcomings and propose a passive sail rotation control device to solve the problem that if the sail navigation aid device in the prior art uses a servo motor to actively control the rotation of the sail, it is not conducive to improving the energy saving and emission reduction effect. If additional The jib controls the rotation of the sail, so it is difficult to start when the wind direction is small, and it is easy to be overloaded when the wind direction is large.

In order to achieve the above technical objectives, the technical solution of the present invention provides a passive sail rotation control device, including:

Two sail control mechanisms are arranged at intervals on the sides of the mast from top to bottom, and are used to regulate the clockwise and counterclockwise rotation angles of the mast respectively. They include a base plate fixed on the hull, several blocks, and several Each stop block is spaced along the radial direction of the mast and slidably disposed on the base plate, and can move in an arc with the axis of the mast as the center of the circle. The elastic member corresponds to each of the stoppers one by one, and both ends of the elastic member are fixedly connected to the base plate and the stopper respectively, so that the stopper is in the initial position, and the initial position of each stopper is The positions are shifted from the inside to the outside in the direction of the tensile elastic force of the elastic member. One end of the gear lever assembly is fixedly connected to the mast. During the rotation of the mast, the gear lever assembly is used to sequentially Squeeze each of the stops.

Further, the base plate is arranged horizontally, and a plurality of arc-shaped guide slots are provided on the base plate in sequence from the inside to the outside. The center of each guide slot coincides with the axis of the mast. The stoppers correspond to each of the guide slots one by one, the stoppers slide through the guide slots, and the elastic members are arranged in the guide slots.

Further, the gear rod assembly includes two gear rods, both of the two gear rods are horizontally arranged from bottom to top along the radial direction of the mast, and one end of the two gear rods is fixed to the mast. Connected, the two gear levers are respectively used to squeeze the upper end and lower end of the stopper.

Further, the sail control mechanism also includes a plurality of guide curved rods, each of the guide curved rods corresponds to each of the guide grooves, and the guide curved rods are arranged in the guide grooves. Both ends of the curved rod are fixedly connected to the base plate, the elastic member is wound around the guide curved rod, and the stopper is slidably sleeved on the guide curved rod.

Further, the elastic member is a spring.

Further, the sail control mechanism also includes a plurality of sealing films, each of which corresponds to each of the guide slots, and is used to block the opening above and the opening below the guide slot, The sealing film is a deformable structure.

Furthermore, the base plate is also provided with a through hole for the mast to pass through, and the center of each guide slot coincides with the center of the through hole.

Further, the passive sail rotation control device also includes a damping mechanism, which is arranged on the side of the mast, and is opposite to the two sail control mechanisms and located on the two control mechanisms. Between the sail mechanisms, the damping mechanism is used to pull the rotation of the mast.

Further, the damping mechanism includes a fixed rod, a sleeve, a holed piston and an inner rod. The fixed rod is arranged vertically and fixed on the hull. The sleeve is used to contain damping fluid. The sleeve One end of the inner rod is hingedly connected to the upper end of the fixed rod, the piston with a hole is sealingly and slidingly arranged in the sleeve, one end of the inner rod is fixedly connected with the piston with a hole, and the other end of the inner rod is sealingly and slidably installed. Passing through the other end of the sleeve and extending to the outside of the sleeve, the other end of the inner rod is used to be hinged with the mast.

Further, the base plate has a fan-shaped structure, the center of the circle of the base plate coincides with the axis of the mast, and the radius of the base plate is smaller than the distance from the fixed rod to the mast.

Compared with the existing technology, the beneficial effects of the present invention include: when in use, the external wind blows the canvas, causing the mast to rotate clockwise or counterclockwise, and drives the gear lever assembly to rotate clockwise or counterclockwise, and the gear lever The component will squeeze each block in turn, and each block will squeeze the corresponding elastic piece, so that the elastic piece is in a compressed state. The sail reaches balance under the action of the wind force and the compression elastic force of the elastic piece, forming a certain angle with the wind direction, that is, the sail Angle of attack, thereby generating lift resistance and achieving the effect of thrust to assist navigation. In this process, no energy is consumed, zero-power consumption of sail turning operation is achieved, and better energy saving and emission reduction effects are achieved. Since the initial position of each block is determined by The inside and outside are offset in the direction of the tensile elastic force of the elastic member, so that during the rotation of the mast, the gear rod assembly squeezes each stopper in turn, which solves the problem of being unable to turn the sail due to small starting force in light wind or small wind direction angle. It also takes into account the problem of system overload in strong winds or large wind direction angles. Each elastic member can also back up each other to improve the robustness of the system.

Description of drawings

Figure 1 is a schematic three-dimensional structural diagram of a passive sail rotation control device provided by the present invention when it is connected to the sail and the hull;

Figure 2 is a schematic three-dimensional structural diagram of a passive sail rotation control device provided by the present invention;

Figure 3 is a schematic three-dimensional structural diagram of the sail control mechanism of the passive sail rotation control device in Figure 2;

Figure 4 is a schematic three-dimensional structural diagram of the sail control mechanism in Figure 3 with the sealing film omitted;

Figure 5 is a top view of the sail control mechanism in Figure 4;

Figure 6 is a three-dimensional structural schematic diagram of the connection relationship between the elastic member, the guide curved rod and the sealing film in Figure 3;

Figure 7 is a schematic diagram of the relationship between elastic force and angle of a passive sail rotation control device provided by the present invention;

Figure 8 is a schematic three-dimensional structural diagram of the connection relationship between the damping mechanism and the mast of the passive sail rotation control device in Figure 2;

Figure 9 is a schematic structural diagram of the damping mechanism in Figure 8;

Figure 10 is a schematic three-dimensional structural diagram of the contact relationship between the passive sail rotation control device and the sail control mechanism when the mast of the passive sail rotation control device in Figure 2 is deflected at 45°;

Figure 11 is a top view of the contact relationship between the passive sail rotation control device and the sail control mechanism when the mast of the passive sail rotation control device in Figure 10 is deflected by 45°;

Figure 12 is a schematic three-dimensional structural diagram of the contact relationship between the passive sail rotation control device and the sail control mechanism when the mast of the passive sail rotation control device in Figure 2 is deflected by 90°;

Figure 13 is a top view of the contact relationship between the passive sail rotation control device and the sail control mechanism when the mast of the passive sail rotation control device in Figure 12 is deflected by 90°;

In the picture: 1-hull, 100-sail, 110-mast, 120-canvas, 200-sail control mechanism, 210-base plate, 211-guide slot, 212-through hole, 220-stop, 230-elastic member, 240-gear rod assembly, 241-gear rod, 250-guide crank rod, 260-sealing membrane, 300-damping mechanism, 310-fixed rod, 320-sleeve, 330-hole piston, 340-inner rod.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention and are not intended to limit the present invention.

The present invention provides a passive sail rotation control device, the structure of which is shown in Figures 1 to 5. It includes two sail control mechanisms 200, and the two sail control mechanisms 200 are arranged at intervals on the mast 110 from top to bottom. The sides are used to adjust the clockwise and counterclockwise rotation angles of the mast 110 respectively, and include a base plate 210 fixed on the hull 1, a plurality of blocks 220, a plurality of elastic members 230 and a gear rod assembly 240, each of which The stoppers 220 are spaced and slidably disposed on the base plate 210 along the radial direction of the mast 110, and can move in an arc with the axis of the mast 110 as the center. Each of the elastic members 230 is in contact with each other. The stoppers 220 are in one-to-one correspondence, and both ends of the elastic member 230 are fixedly connected to the base plate 210 and the stoppers 220 respectively, so that the stoppers 220 are in the initial position. The initial positions are shifted from the inside to the outside in the direction of the tensile elastic force of the elastic member 230. One end of the gear lever assembly 240 is fixedly connected to the mast 110. During the rotation of the mast 110, the gear lever The rod assembly 240 is used to squeeze each of the blocks 220 in sequence.

During use, the external wind blows the canvas 120, causing the mast 110 to rotate clockwise or counterclockwise, and drives the gear lever assembly 240 to rotate clockwise or counterclockwise, and the gear lever assembly 240 will Squeeze each of the stoppers 220 in sequence, and each of the stoppers 220 will squeeze the corresponding elastic member 230, so that the elastic member 230 is in a compressed state. The sail 100 is compressed by the wind force and the elastic member 230. It reaches equilibrium under the action of elastic force and forms a certain angle with the wind direction, that is, the sail's 100 angle of attack, thereby generating lift resistance and achieving the effect of thrust to assist navigation. In this process, no energy is consumed, and the sail turning operation is achieved with zero power consumption. , to achieve better energy saving and emission reduction effects, since the initial positions of each of the blocks 220 are shifted from the inside to the outside in the direction of the tensile elastic force of the elastic member 230, so that during the rotation of the mast 110, The gear lever assembly 240 squeezes each of the blocks 220 in sequence, which solves the problem of being unable to turn the sail due to the small starting force in light winds or small wind angles, and also takes into account the problem of system overload in strong winds or large wind angles. , each of the elastic members 230 can also back up each other to improve the robustness of the system.

As a preferred embodiment, please refer to Figures 3 and 4. The base plate 210 is arranged horizontally. A number of guide slots 211 with arc-shaped structures are provided on the base plate 210 from the inside to the outside. Each of the guide slots 211 The centers of the circles coincide with the axis of the mast 110 , and each of the stoppers 220 corresponds to each of the guide slots 211 . The stoppers 220 slide through the guide slots 211 , and the elastic member 230 It is arranged in the guide slot 211, and the movement of the stopper 220 can be guided through the guide slot 211, so that the stopper 220 can move in an arc with the axis center of the mast 110 as the center. , improving the contact effect between the gear lever assembly 240 and the stopper 220 .

As a preferred embodiment, please refer to FIG. 2 . The gear lever assembly 240 includes two gear levers 241 . Both of the two gear levers 241 are horizontally arranged from bottom to top along the radial direction of the mast 110 . One end of the gear lever 241 is fixedly connected to the mast 110, and the two gear levers 241 are respectively used to squeeze the upper end and the lower end of the stopper 220 to raise the distance between the gear lever 241 and the stopper. The contact effect of 220 facilitates the blocking rod to push the blocking block 220 to move.

As a preferred embodiment, please refer to Figure 4. The sail control mechanism 200 also includes a plurality of guide curved rods 250. Each of the guide curved rods 250 corresponds to each of the guide slots 211. 250 is disposed in the guide groove 211, both ends of the guide curved rod 250 are fixedly connected to the base plate 210, the elastic member 230 is wound around the guide curved rod 250, and the stopper 220 The sliding sleeve is mounted on the guide curved rod 250 , and the guide curved rod 250 is used to guide the elastic member 230 to move along an arc line when performing compression or extension movements.

As a preferred embodiment, please refer to Figure 4. The elastic member 230 is a spring, so that when the stopper 220 is pushed by the gear lever 241, the elastic member 230 can be compressed and accumulate compression. Elastic potential energy.

As a preferred embodiment, please refer to Figures 3 and 6. The sail control mechanism 200 also includes a plurality of sealing films 260. Each of the sealing films 260 corresponds to each of the guide slots 211 in a one-to-one manner. The upper opening and the lower opening of the guide channel 211 are blocked. The sealing film 260 is a deformable structure. The sealing film 260 seals the elastic member 230 in the guide channel 211, which can achieve Moisture-proof, salt-spray-proof and other functions improve the service life of the elastic member 230. When the elastic member 230 is compressed, the sealing film 260 can be naturally folded and compressed. Due to its lightweight characteristics, it will not cause damage to the elastic member 230. Stop 220 creates additional resistance.

As a preferred embodiment, please refer to Figures 2 and 4. The base plate 210 is also provided with a through hole 212 for the mast 110 to pass through. The center of each guide groove 211 is aligned with the through hole. The centers of the circles 212 coincide with each other, so that during the rotation of the mast 110, the gear lever 241 is driven to rotate and each of the stop blocks 220 is squeezed sequentially, so that each of the stop blocks 220 can move in an arc.

As a preferred embodiment, please refer to Figure 2. The passive sail rotation control device also includes a damping mechanism 300. The damping mechanism 300 is disposed on the side of the mast 110. The damping mechanism 300 is connected with the two The sail control mechanism 200 is opposite and located between the two sail control mechanisms 200. The damping mechanism 300 is used to pull the rotation of the mast 110 to avoid interference problems. Since the existing navigation aid device of the sail 100 is When encountering an environment with frequent changes in wind direction or vortex-induced vibration on the sail surface, the mast 110 and the sail 100 will swing frequently, which is not conducive to the stability and structural safety of the sail 100. The setting of the damping mechanism 300 can solve the problem of the problem between the mast 110 and the sail 100. The problem that the sail 100 will swing frequently can effectively protect the stability and structural safety of the sail 100 propulsion of the sail 100 navigation aid in an environment where the wind direction changes frequently.

As a preferred embodiment, please refer to Figures 8 and 9. The damping mechanism 300 includes a fixed rod 310, a sleeve 320, a holed piston 330 and an inner rod 340. The fixed rod 310 is arranged vertically and fixed to the hull. 1, the sleeve 320 is used to contain damping fluid, one end of the sleeve 320 is hinged with the upper end of the fixed rod 310, and the holed piston 330 is sealingly and slidably arranged in the sleeve 320, so One end of the inner rod 340 is fixedly connected to the holed piston 330, and the other end of the inner rod 340 seals and slides through the other end of the sleeve 320 and extends to the outside of the sleeve 320. The other end of the inner rod 340 is used to hinge with the mast 110. The damping fluid and the holed piston 330 can achieve a damping hysteresis effect to prevent the sail 100 from reacting too quickly and causing tremors under high-frequency changing wind conditions. This affects the structural life, solves the problem of frequent swings of the mast 110 and the canvas 120, and effectively protects the stability and structural safety of the sail 100 propulsion of the sail 100 navigation aid device in an environment where the wind direction changes frequently. .

As a preferred embodiment, please refer to Figure 2. When each of the blocks 220 is in the initial position, the sleeve 320 is perpendicular to the two gear lever assemblies 240, so that the two sail control mechanisms 200 The angle of clockwise rotation and counterclockwise rotation of the mast 110 can be adjusted respectively.

As a preferred embodiment, please refer to Figure 2. The base plate 210 has a fan-shaped structure. The center of the circle of the base plate 210 coincides with the axis of the mast 110. The radius of the base plate 210 is smaller than that of the fixed rod 310 to the mast 110. The distance between the masts 110 is to avoid interference problems.

As a preferred embodiment, please refer to Figure 5. The initial position of each stopper 220 is sequentially offset from the inside to the outside toward the tensile elastic force direction of the elastic member 230. The specific angle of the offset is set according to actual needs. , such as 30 degrees.

As a preferred embodiment, please refer to Figure 7 . Assume that the number of elastic members 230 is three. The relationship between the total elastic force F of the elastic members 230 and the rotation angle A is as shown in Figure 7 . As the mast 110 As the rotation proceeds, each of the elastic members 230 is compressed sequentially from the inside to the outside. k1, k2, and k3 are the Hooke coefficients of a single elastic member 230 from the inside to the outside when converting the compression length into an angular relationship. In the initial stage, Only the innermost elastic member 230 works, so that the device can achieve a smaller starting force. In the final stage, the three groups of elastic members 230 work together, and the compression elastic force is larger, so that the device can achieve a larger wind direction and wind speed. stability, and allows the rotation angle to exceed 90 degrees to prevent overload. The data on the coordinate axis in Figure 7 is only an example.

As a preferred embodiment, please refer to Figures 10 and 11. Assume that the number of elastic members 230 is three, and the mast 110 is deflected 45 degrees. When the mast 110 is deflected 45 degrees, the gear rod 241 contacts the stopper 220, compresses the innermost elastic member 230 and the middle elastic member 230, and stops rotating when the elastic force is equal to the wind force. When the mast 110 rotates 45 degrees, the sleeve 320 also rotates, which provides a smooth buffering effect during the rotation.

As a preferred embodiment, please refer to Figures 12 and 13. Assume that the number of elastic members 230 is three, and the mast 110 deflects 90 degrees. When the mast 110 deflects 90 degrees, the gear lever 241 contacts the stop 220, compresses the three elastic members 230, and stops rotating when the elastic force is equal to the wind force. The mast 110 rotates 90 degrees, and the sleeve 320 also rotates accordingly. During the rotation Provides a smooth buffering effect.

In order to better understand the present invention, the working principle of the technical solution of the present invention will be described in detail below with reference to Figures 1 to 13:

During use, the external wind blows the canvas 120, causing the mast 110 to rotate clockwise or counterclockwise, and drives the gear lever 241 to rotate clockwise or counterclockwise, and the gear lever 241 will squeeze in turn. When each of the stoppers 220 is pressed, each of the stoppers 220 will squeeze the corresponding elastic member 230, so that the elastic member 230 is in a compressed state. The sail 100 operates under the combination of wind force and the compression elastic force of the elastic member 230. It reaches a balance under the action of the wind direction and forms a certain angle with the wind direction, that is, the 100 angle of attack of the sail, thereby generating lift resistance and achieving the effect of thrust to assist navigation. In this process, no energy is consumed, and the sail turning operation is achieved with zero power consumption. Better energy saving and emission reduction effect is achieved because the initial position of each stopper 220 is shifted from the inside to the outside in the direction of the tensile elastic force of the elastic member 230, so that during the rotation of the mast 110, the The gear lever assembly 240 squeezes each of the blocks 220 in sequence, which solves the problem of being unable to turn the sail due to the small starting force when there is light wind or a small wind direction angle, and also takes into account the problem of system overload when the wind is strong or a large wind direction angle. The elastic members 230 can also back up each other to improve the robustness of the system. Since the sleeve 320 will rotate during the rotation of the mast 110, the damping fluid and the holed piston 330 can achieve The damping hysteresis effect prevents the sail 100 from reacting too quickly and causing tremors in high-frequency changing wind conditions, thereby affecting the structural life. It solves the problem of the mast 110 and the canvas 120 frequently swinging when the wind direction changes frequently. The stability and structural safety of the sail 100 propulsion of the sail 100 navigation aid device can be effectively protected in the environment.

A passive sail rotation control device provided by the invention has the following beneficial effects:

(1) The sail 100 reaches a balance under the action of wind force and the compression elastic force of the elastic member 230, and forms a certain angle with the wind direction, that is, the attack angle of the sail 100, thereby generating lift resistance and achieving the effect of thrust to assist navigation. No energy is consumed in this process, achieving zero-power consumption of sail turning operation and achieving better energy saving and emission reduction effects;

(2) Since the initial positions of each stopper 220 are sequentially shifted from the inside to the outside toward the direction of the tensile elastic force of the elastic member 230 , during the rotation of the mast 110 , the gear lever assembly 240 is sequentially Squeezing each of the blocks 220 solves the problem of being unable to turn the sail due to the small starting force in light winds or small wind angles, and also takes into account the problem of system overload in strong winds or large wind angles;

(3) The damping fluid and the holed piston 330 can achieve a damping hysteresis effect, preventing the sail 100 from trembling due to too rapid response under high-frequency changing wind conditions, thereby affecting the structural life, and solving the problem between the mast 110 and the The problem that the canvas 120 frequently swings can effectively protect the propulsion stability and structural safety of the sail 100 of the sail 100 navigation aid device in an environment where the wind direction changes frequently.

The above-described specific embodiments of the present invention do not limit the scope of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention shall be included in the protection scope of the claims of the present invention.

Claims (10)

1. A passive sail rotation control apparatus, comprising:

the two sail control mechanisms are respectively arranged at the sides of the mast from top to bottom at intervals and are respectively used for regulating and controlling the clockwise and anticlockwise rotating angles of the mast, the sail control mechanism comprises a base plate, a plurality of stop blocks, a plurality of elastic pieces and a stop rod assembly, wherein the base plate, the stop blocks are fixed on a ship body, the stop blocks are respectively arranged on the base plate at intervals along the radial direction of the mast in a sliding manner, the axes of the mast are used as circle centers to do arc-shaped movement, the elastic pieces are respectively in one-to-one correspondence with the stop blocks, the two ends of the elastic pieces are respectively fixedly connected with the base plate and the stop blocks, the stop blocks are positioned at initial positions, the initial positions of the stop blocks are respectively and sequentially deflected towards the stretching elastic directions of the elastic pieces from inside to outside, one end of the stop rod assembly is fixedly connected with the mast, and the stop rod assembly is used for sequentially extruding the stop blocks in the rotating process of the mast.

2. The passive sail rotation control device according to claim 1, wherein the base plate is horizontally arranged, a plurality of guide through grooves with arc structures are sequentially formed in the base plate from inside to outside, the circle centers of the guide through grooves are coincident with the axis of the mast, the stop blocks are in one-to-one correspondence with the guide through grooves, the stop blocks slide to penetrate through the guide through grooves, and the elastic piece is arranged in the guide through grooves.

3. The passive sail rotation control of claim 2, wherein the lever assembly includes two levers, each of which is disposed horizontally from bottom to top along a radial direction of the mast, each of which has one end fixedly connected to the mast, and each of which is adapted to press an upper end and a lower end of the stopper.

4. The passive sail rotation control device according to claim 2, wherein the sail control mechanism further comprises a plurality of guiding curved bars, each guiding curved bar corresponds to each guiding through groove one by one, the guiding curved bars are arranged in the guiding through grooves, two ends of each guiding curved bar are fixedly connected with the base plate, the elastic piece is wound on the guiding curved bars, and the stop block is sleeved on the guiding curved bars in a sliding mode.

5. The passive sail rotation control apparatus of claim 4, wherein the resilient member is a spring.

6. The passive sail rotation control device of claim 2, wherein the sail control mechanism further comprises a plurality of sealing membranes, each sealing membrane corresponds to each guide through groove one by one and is used for blocking an opening above the guide through groove and an opening below the guide through groove, and the sealing membranes are of deformable structures.

7. The passive sail rotation control device according to claim 2, wherein the base plate is further provided with a through hole for the mast to pass through, and the circle center of each guide through groove coincides with the circle center of the through hole.

8. A passive sail rotation control apparatus as recited in claim 1, further comprising a damping mechanism disposed laterally of the mast, the damping mechanism being opposite and between the two sail control mechanisms, the damping mechanism being configured to pull rotation of the mast.

9. The passive sail rotation control device of claim 8, wherein the damping mechanism comprises a fixed rod, a sleeve, a perforated piston and an inner rod, the fixed rod is vertically arranged and fixed on the hull, damping liquid is contained in the sleeve, one end of the sleeve is hinged with the upper end of the fixed rod, the perforated piston is slidably arranged in the sleeve in a sealing manner, one end of the inner rod is fixedly connected with the perforated piston, the other end of the inner rod is slidably arranged through the other end of the sleeve in a sealing manner and extends out of the sleeve, and the other end of the inner rod is hinged with the mast.

10. The passive sail rotation control of claim 9, wherein the base plate has a fan-like configuration, the center of the base plate coincides with the axis of the mast, and the radius of the base plate is less than the distance from the fixed pole to the mast.