Sail rotating structure assembly and natural energy sensing platform

Abstract

According to the sail rotating structure assembly and the natural energy sensing platform, a stepping motor is connected with an electric rotary table, and a worm and gear reducing mechanism is arranged in the electric rotary table and used for providing torque amplification and self-locking functions; the power shaft connecting sleeve is connected with the electric rotary table and fixed to the power shaft in a keyless connection mode, and a pin is arranged between the power shaft and the power shaft connecting sleeve to assist torque transmission. The deck support is fixed to a deck, the power shaft is arranged in the center of the deck support in a penetrating mode, and the deck support is connected with the power shaft in a sealed mode and used for bearing axial inertia force. The mast flange is welded to the lower end of the mast, the power shaft flange is welded to the upper portion of the power shaft, the power shaft extends into the mast, and the mast flange and the power shaft flange are detachably connected through a bolt. The device has the advantages of being small in occupied space, simple in structure, convenient to mount and dismount and high in load bearing capacity, meanwhile, the requirements for land transportation convenience and marine operation sealing are further considered, and the comprehensive performance is excellent.

Description

Technical Field

[0001] The present invention relates to the technical field of ship power, and particularly to a sail rotating structure assembly and a natural energy sensing platform. Background Art

[0002] The sail rotating systems of existing small unmanned sailboats face many technical problems. First of all, to maintain sailing stability, unmanned sailboats usually adopt wing sails with relatively large weights. Such wing sails will generate a large inertia when rotating, which requires the sail rotating system to have high anti-torsion performance and large output torque. However, traditional sail rotating mechanisms often adopt complex gear transmissions or hydraulic drive systems, which are not only bulky but also have complex structures and are difficult to adapt to the limited space requirements of small unmanned sailboat platforms.

[0003] Specifically, the engine room space of a small natural energy sensing platform is extremely limited, and various electrical devices such as batteries and control units need to be arranged inside. The lateral width of the hull is usually relatively narrow. Under such space constraints, traditional sail rotating mechanisms simply cannot be reasonably arranged. In addition, the existing technology does not adequately consider the waterproof and sealing requirements of the cabin, and water seepage problems are likely to occur during long-term offshore operations. The fixing methods of wing sails are also mostly permanent connections and do not have the function of quick disassembly, which brings great inconvenience to land transportation and maintenance.

[0004] More critically, the existing sail rotating systems do not fully consider the unique force characteristics of unmanned sailboats: on the one hand, heavy wing sails will generate huge bending moments under the action of wind force; on the other hand, the swaying motion of the ship in waves will generate complex alternating loads on the sail rotating mechanism. These factors lead to problems such as poor reliability and short lifespan of traditional sail rotating mechanisms in the application of unmanned sailboats. Summary of the Invention

[0005] The present invention aims to at least solve one of the technical problems existing in the prior art. For this purpose, the object of the present invention is to provide a sail rotating structure assembly and a natural energy sensing platform to solve the problems in the prior art such as the large volume of the sail rotating structure system, inability to adapt to small space arrangements, inconvenience in transportation, and poor force reliability.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] In a first aspect, an embodiment of the present application provides a sail rotating structure assembly, including:

[0008] A power input module, including a stepper motor and an electric turntable. The stepper motor is connected to the electric turntable, and the electric turntable is internally provided with a worm and worm gear reduction mechanism for providing torque amplification and self-locking functions;

[0009] The power transmission module includes a power shaft and a power shaft connecting sleeve. The power shaft connecting sleeve is connected to the electric turntable. The power shaft connecting sleeve is fixed to the power shaft by a keyless connection method, and a pin is provided between the power shaft and the power shaft connecting sleeve to assist in torque transmission.

[0010] The sealing and supporting module includes a deck support. The deck support is fixed to the deck. The power shaft passes through the center of the deck support. The deck support is hermetically connected to the power shaft and is used to bear the axial inertia force.

[0011] The mast connection module includes a mast, a mast flange, and a power shaft flange. The mast flange is welded to the lower end of the mast. The power shaft flange is welded to the upper part of the power shaft. The power shaft extends into the mast and the mast flange and the power shaft flange are detachably connected by bolts.

[0012] In some embodiments, the power transmission module includes a tensioning sleeve. The power shaft connecting sleeve is fixed to the power shaft by the tensioning sleeve in a keyless connection manner, and the tensioning sleeve cooperates with the pin structure to improve torque transmission.

[0013] In some embodiments, the sleeve body of the tensioning sleeve is a conical hollow structure. An axially penetrating keyway is provided on the outer surface of the sleeve body. Alternately distributed annular grooves and protrusions are machined on the inner surface of the sleeve body. A flange edge with uniformly distributed bolt through holes is provided at the axial end of the sleeve body.

[0014] In some embodiments, the worm and worm gear reduction mechanism is internally provided with a rotary encoder for feedback of the rotational speed of the wing sail, and the torque and rotational speed are controlled in combination with the PID module.

[0015] In some embodiments, the worm and worm gear reduction mechanism includes a worm and a worm gear. The worm is a single - head spiral structure and the tooth surface is hardened by quenching. The worm gear adopts a split structure composed of a hub and a tooth ring. The tooth ring is fixed to the hub by bolts. A ring - shaped flange that fits into the corresponding groove of the hub is provided on the inner circumferential surface of the tooth ring.

[0016] In some embodiments, the sealing and supporting module further includes a shaft seal and a double - row tapered roller bearing;

[0017] The shaft seal is embedded above the deck support. The outer ring of the shaft seal cooperates with the deck support, and the inner ring of the shaft seal cooperates with the power shaft.

[0018] The double - row tapered roller bearing is embedded below the deck support. The outer ring of the double - row tapered roller bearing cooperates with the deck support, and the inner ring of the double - row tapered roller bearing cooperates with the power shaft to bear the axial inertia force caused by the ship's sway.

[0019] In some embodiments, the sealing housing of the shaft seal is a stepped annular structure. The inner hole of the shaft seal is provided with three - stage sealing grooves. A V - shaped cross - section sealing ring is installed in the first - stage sealing groove, a U - shaped cross - section sealing ring is installed in the second - stage sealing groove, and a rectangular cross - section sealing ring is installed in the third - stage sealing groove. The lip directions of the sealing rings at all levels face the inside of the sealing housing.

[0020] In some embodiments, the double - row tapered roller bearing includes an outer bearing ring, an inner bearing ring, rollers, and a cage. The inner surface of the outer bearing ring is provided with two rows of inclined raceways. Logarithmic profile rollers are evenly distributed in each row of raceways. Guide rings are provided at both ends of the rollers, and the guide rings are riveted and fixed to the cage. The cage evenly spaces the rollers in the tapered raceways provided on the outer surface of the inner bearing ring that match the rollers. The inner bearing ring has an interference fit with the power shaft.

[0021] In some embodiments, the electric turntable is fixed to the inner bottom plate of the cabin by bolts and serves as the fulcrum of the sail - turning structure assembly.

[0022] In a second aspect, an embodiment of the present application provides a natural - energy sensing platform, including the sail - turning structure assembly as described above.

[0023] Compared with the prior art, the present invention has at least the following beneficial effects:

[0024] By using a worm - gear speed - reducing mechanism in cooperation with a stepper motor, both torque amplification and self - locking functions are achieved, fundamentally avoiding the problem of accidental rotation of traditional mechanisms under wind loads, and significantly simplifying the system structure compared with traditional hydraulic drives;

[0025] The composite connection structure of the expansion sleeve and the pin, through a triple mechanical interlocking mechanism of conical - surface friction locking, key - groove circumferential positioning, and pin radial shear resistance, significantly improves the reliability of torque transmission; the elastic deformation ability of the expansion sleeve can absorb impact energy, and together with the shear action of the pin, forms a hierarchical load - transfer mechanism, ensuring both smooth transmission under normal working conditions and the ability to cope with sudden impact loads;

[0026] The three - stage sealing structure realizes the synergistic effect of static and dynamic sealing through the combination of sealing rings with different cross - sectional shapes. Among them, the excellent follow - up performance of the V - shaped sealing ring compensates for the shaft - system yaw, the U - shaped sealing ring provides the main sealing function, and the rectangular sealing ring serves as the final defense line, forming a progressive sealing line of defense to effectively resist seawater erosion;

[0027] The double - row tapered roller bearing has a special roller profile design and cage structure. The logarithmic profile roller design of the bearing optimizes the contact - stress distribution, and together with the precise positioning function of the cage, significantly improves the service life of the bearing under complex working conditions, enabling it to still operate stably under the ship - swaying conditions.

[0028] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. Description of the Drawings

[0029] The present invention will be further described with reference to the accompanying drawings. However, the embodiments in the drawings do not constitute any limitation to the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the following drawings.

[0030] Figure 1 FIG. is a schematic structural diagram of a sail-turning structure assembly provided by the present invention.

[0031] Figure 2 FIG. is an exploded schematic structural diagram of a sail-turning structure assembly provided by the present invention.

[0032] Figure 3 FIG. is a semi-sectional view of a partial structure in a sail-turning structure assembly provided by the present invention. Specific Embodiments

[0033] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0034] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0035] In the description of the present invention, when it is described that a specific device is located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device. When it is described that a specific device is connected to other devices, the specific device may be directly connected to the other devices without an intermediate device, or may not be directly connected to the other devices but have an intermediate device.

[0036] For technologies, methods, and devices known to those of ordinary skill in the relevant fields, they may not be discussed in detail, but in appropriate cases, the said technologies, methods, and devices should be regarded as part of the specification.

[0037] In a first aspect, referring to Figures 1 to 3 , this embodiment provides a sail-turning structure assembly, including:

[0038] A power input module, including a stepper motor 11 and an electric turntable 10. The stepper motor 11 is connected to the electric turntable 10. The stepper motor 11 is used as the power input of the electric turntable 10. By selecting appropriate parameters for the electric turntable 10, a worm and worm gear reduction mechanism is arranged inside the electric turntable 10. The worm and worm gear reduction mechanism can not only provide the effect of torque amplification, but also realize the self-locking function through the mechanism characteristics of the worm and worm gear;

[0039] A power transmission module, including a power shaft 7 and a power shaft connecting sleeve 9. The power shaft connecting sleeve 9 is connected to the electric turntable 10. The power shaft connecting sleeve 9 is fixed to the power shaft 7 by a keyless connection method, and a pin is provided between the power shaft 7 and the power shaft connecting sleeve 9 to assist in torque transmission;

[0040] A sealing and supporting module, including a deck support 5. The deck support 5 is fixed to the deck. The power shaft 7 passes through the center of the deck support 5. The deck support 5 is hermetically connected to the power shaft 7 and is used to bear the axial inertia force;

[0041] A mast 1 connection module, including a mast 1, a mast flange 2 and a power shaft flange 3. The mast flange 2 is welded to the lower end of the mast 1. The power shaft flange 3 is welded to the upper part of the power shaft 7. The power shaft 7 extends into the mast 1 and the mast flange 2 and the power shaft flange 3 are detachably connected by bolts.

[0042] It should be noted that both the stepper motor 11 and the electric turntable 10 are arranged on the inner bottom plate of the cabin. The electric turntable 10 is fixed to the inner bottom plate of the cabin by bolts and serves as the fulcrum of the sail-turning structure assembly. Among them, the inner bottom plate of the cabin is structurally strengthened and can evenly transfer the working reaction force of the turntable to the hull structure. The installation surface is provided with a waterproof sealant groove, and a special sealant is injected before the bolts are tightened to form a reliable waterproof barrier.

[0043] After being transmitted by the electric turntable 10, the stepping motor 11 drives the power shaft coupling 9 to rotate. The power shaft coupling 9 transmits torque to the power shaft 7. The power shaft 7 passes through the deck support 5 and extends out of the ship's deck. The deck support 5 is fixed at the deck. The deck support 5 not only ensures the sealed connection when the power shaft 7 rotates, but also ensures that it can bear the axial inertial force transmitted from the wing sail. Above the deck, the mast 1 and the power shaft 7 are detachably connected through the mast flange 2 and the power shaft flange 3. When transporting on land, the mast 1 (wing sail) can be removed, and the wing sail can be installed again after reaching the shore, making the land transportation of the natural energy sensing platform more convenient. The inner diameter of the mast 1 is designed to be the same as the outer diameter of the power shaft 7. The power shaft 7 extends about 80 mm into the mast 1, reducing the overall strength reduction of the mast 1 caused by the detachable design. The sleeve design also enables the wing sail to withstand a greater bending moment under severe sea conditions, improving its survivability.

[0044] In this embodiment, the modular design concept is adopted, and the whole system is divided into four functional modules: power input, power transmission, sealing support, and mast 1 connection. The core of the power input module is the stepping motor 11 cooperating with the electric turntable 10 with an internal worm and worm gear reduction mechanism. This design not only ensures sufficient torque output but also realizes the self-locking function. The power transmission module ensures reliable torque transmission through the ingenious combination of the power shaft 7 and the power shaft coupling 9, and adopts a keyless connection method. At the same time, a pin is set as an auxiliary torque transmission element. The sealing and support module uses the deck support 5 as the basic support, cooperating with the shaft seal 4 with a multi-layer sealing ring structure and the specially designed double-row tapered roller bearing 6, effectively solving the problems of waterproof sealing and axial force bearing. The mast 1 connection module realizes the quick disassembly and assembly function of the wing sail through the cooperation of the mast 1, the mast flange 2, and the power shaft flange 3. The overall structure of this mechanism is compact, and the modules are connected by flange bolts, which not only ensures the structural strength but also facilitates transportation and maintenance.

[0045] More specifically, the power transmission module includes a shrink disc 8. The power shaft coupling 9 is fixed to the power shaft 7 by the shrink disc 8 in a keyless connection manner. The shrink disc 8 cooperates with the pin structure to improve torque transmission. During installation, first put the shrink disc 8 on the power shaft 7, and then install it into the inner conical hole of the power shaft coupling 9. By evenly tightening the bolts at the end flange, the shrink disc 8 generates radial deformation, thereby realizing the interference fit between the shaft and the sleeve. To enhance the reliability of force transmission, radial pins are also provided between the shrink disc 8 and the power shaft 7. The pins are made of high-strength stainless steel and have an interference fit with the pin holes. This dual force transmission structure ensures the reliability of the connection under high torque conditions and avoids the stress concentration problem easily generated by the traditional key connection.

[0046] Preferably, the sleeve body of the tension sleeve 8 is a conical hollow structure. An axially penetrating keyway is provided on the outer surface of the sleeve body. Annular grooves and protrusions are alternately distributed on the inner surface of the sleeve body. A flange edge with evenly distributed bolt through-holes is provided at the axial end of the sleeve body.

[0047] It should be noted that the tension sleeve 8 is designed as a conical hollow structure. During installation, an axial force is applied through bolts to cause radial deformation, so as to form an interference fit with the power shaft 7 and the connecting sleeve. The axial keyway on the outer surface of the sleeve body is keyed with the inner hole of the power shaft connecting sleeve 9 to achieve circumferential positioning. The annular grooves and protrusions processed on the inner surface are alternately distributed, and local plastic deformation occurs during pressing to form a force transmission mode of multi-point contact. The flange edge at the end of the sleeve body is provided with 8 evenly distributed bolt through-holes, and high-strength bolts are used to apply pressure evenly. This structural design makes the stress distribution of the tension sleeve 8 more uniform when bearing large torques, and is also convenient for installation and disassembly.

[0048] This connection method avoids the stress concentration problem easily generated by the traditional key connection. The pin, as an auxiliary transmission element, passes through the corresponding holes of the tension sleeve 8 and the power shaft connecting sleeve 9, and bears part of the shear force under overload conditions, forming a double insurance mechanism. While ensuring the smooth transmission of large torques under normal working conditions, this structure can also effectively cope with the impact loads that the unmanned sailboat may encounter in harsh sea conditions, significantly improving the reliability and service life of the transmission system.

[0049] As an implementation method, a rotary encoder is built into the worm and worm gear reduction mechanism to feedback the rotation speed of the wing sail, and the torque and rotation speed are controlled in combination with the PID module. Since the stepping motor 11 directly drives the electric turntable 10, and a rotary encoder is installed at the other end of the worm shaft, the rotation speed of the sail can be calculated through the transmission ratio relationship of the worm and worm gear reduction mechanism, providing feedback for the system. Then, in combination with the PID module to control the torque and rotation speed, the required torque and rotation speed can be output according to needs.

[0050] Specifically, the rotary encoder monitors the rotation speed of the worm in real time and feeds back the signal to the PID module. The PID algorithm is used to perform closed-loop regulation on the rotation speed and torque of the stepping motor 11. By dynamically adjusting the motor current and pulse frequency, precise control of the sail rotation speed and position is achieved. This design enables the system to automatically adjust the wing sail angle according to the wind speed and sailing state, while ensuring sufficient driving torque, avoiding the oscillation and out-of-step problems easily occurring in traditional open-loop control. Especially under gust conditions, the feedback of the rotary encoder can quickly detect abnormal rotation speeds, and the PID module can respond immediately, greatly improving the stability and reliability of the system.

[0051] Furthermore, the PID module simultaneously processes the position feedback signal from the rotary encoder and the real-time speed signal obtained through differential calculation. The position loop adopts the PID control algorithm. By comparing the actual position feedback from the rotary encoder with the target position, the basic control quantity is calculated. The speed loop adopts the fuzzy PID control algorithm. By analyzing the differential signal of the position change, the actual rotational speed is obtained and compared with the preset speed curve. After the outputs of the two control loops are weighted and synthesized, a PWM signal is finally generated to drive the stepper motor 11.

[0052] The specific working process is as follows: When the wind speed changes, first, the wind speed sensor detects the change signal. The PID module calculates the target sail angle change curve according to the preset algorithm, including the target position and the ideal speed curve. The position loop responds immediately and outputs a preliminary control signal. At the same time, the speed loop monitors the actual rotational speed in real time. When the speed deviation is detected, the control parameters are dynamically adjusted. The system performs sampling and control calculations every 10 ms to ensure a fast response.

[0053] The adaptive algorithm in this embodiment dynamically adjusts the control parameters according to the actual moment of inertia of the wing sail. In the startup phase, the system applies a test torque, estimates the current load inertia by analyzing the acceleration, and automatically adjusts the PID parameters accordingly. During the operation, the control system continuously monitors the change trends of the position error and the speed error. When the oscillation trend is detected, the proportional gain is automatically reduced, and when the response is sluggish, the integral action is appropriately increased. This dynamic parameter adjustment mechanism enables the system to always maintain the optimal control state.

[0054] When dealing with gust situations, this embodiment adopts an impact load suppression algorithm. When the rotational speed mutation exceeding the threshold is detected, the buffer control mode is immediately activated: on the one hand, the proportional gain of the position loop is reduced to prevent overshoot, and on the other hand, a feedforward compensation is introduced in the speed loop to adjust the control quantity in advance. At the same time, the maximum output torque of the motor is limited through the current closed-loop control to avoid overloading of mechanical components. All control parameters are stored in the non-volatile memory, and the preset control modes can be selected according to different sea conditions.

[0055] The advantages of this double closed-loop control system are as follows: The position loop ensures the final positioning accuracy, and the speed loop optimizes the dynamic response process. The synergistic effect of the two enables the wing sail to reach the target position quickly and smoothly. The adaptive algorithm effectively compensates for the influence brought by the load change, and the impact protection mechanism greatly improves the system reliability.

[0056] As an implementation manner, the worm and worm gear reduction mechanism includes a worm and a worm gear. The worm is a single - head spiral structure and its tooth surface is hardened by quenching. The worm is made of 20CrMnTi alloy steel and its surface hardness reaches HRC58 - 62 after carburizing and quenching treatment. The worm gear adopts a split - type structure composed of a hub and a gear ring. The gear ring is fixed on the hub by bolts. The gear ring is made of wear - resistant bronze material and is fixed on the steel hub by 6 equally - distributed socket - head cap screws. The inner circumferential surface of the gear ring is provided with an annular flange that fits into the corresponding groove of the hub. This split structure not only reduces the manufacturing cost, but also facilitates the maintenance and replacement after wear, while ensuring the transmission accuracy and load - bearing capacity.

[0057] As an implementation manner, the sealing and support module further includes a shaft seal 4 and a double - row tapered roller bearing 6;

[0058] The shaft seal 4 is embedded above the deck support 5. The outer ring of the shaft seal 4 cooperates with the deck support 5, and the inner ring of the shaft seal 4 cooperates with the power shaft 7;

[0059] The double - row tapered roller bearing 6 is embedded below the deck support 5. The outer ring of the double - row tapered roller bearing 6 cooperates with the deck support 5, and the inner ring of the double - row tapered roller bearing 6 cooperates with the power shaft 7, which is used to bear the axial inertia force brought by the ship's swaying.

[0060] Since the power shaft 7 directly axially penetrates the entire deck support 5, the deck support 5 is provided with two structures to achieve the sealing and support of the power shaft 7. Among them, the shaft seal 4 is located above the deck support 5. A shaft seal 4 is embedded in the upper end face of the deck support 5. The shaft seal 4 adopts three - layer sealing rings to ensure excellent sealing performance between the power shaft 7 and the deck support 5 when the mast 1 rotates. A double - row tapered roller thrust bearing is embedded in the lower end face of the deck support 5 to bear the axial inertia force of the wing sail brought by the ship's swaying.

[0061] Preferably, the sealing housing of the shaft seal 4 is a stepped annular structure. The inner hole of the shaft seal 4 is provided with three - stage sealing grooves. The first - stage sealing groove is installed with a V - shaped cross - section sealing ring, the second - stage sealing groove is installed with a U - shaped cross - section sealing ring, and the third - stage sealing groove is installed with a rectangular cross - section sealing ring. The lip directions of the sealing rings at all levels face the inside of the sealing housing.

[0062] The shaft seal 4 adopts an innovative three-layer sealing ring structure, and different cross-sectional shapes and material combinations are used for each sealing ring. The outermost V-shaped sealing ring is made of fluororubber material, which has good corrosion resistance and elastic recovery ability, and mainly deals with seawater erosion. The middle U-shaped sealing ring uses polytetrafluoroethylene material, which has an extremely low coefficient of friction, ensuring smooth rotation while providing the main sealing function. The innermost rectangular sealing ring is made of spring-enhanced nitrile rubber, and the wear of the sealing surface is compensated by the pre-tightening force of the built-in spring. This progressive sealing design forms multiple protective barriers. Even if a certain layer of the seal fails, the other seals can still maintain the waterproof function, which is especially suitable for unmanned sailing boats working in the marine environment for a long time.

[0063] Preferably, the double-row tapered roller bearing 6 includes an outer bearing ring, an inner bearing ring, rollers and a cage. The inner surface of the outer bearing ring is provided with two rows of inclined raceways. Logarithmic-profile rollers are evenly distributed in each row of raceways. Guide rings are provided at both ends of the rollers, and the guide rings are riveted and fixed to the cage. The cage evenly spaces the rollers in the tapered raceways provided on the outer surface of the inner bearing ring and matching the rollers. The inner bearing ring has an interference fit with the power shaft 7.

[0064] The double-row tapered roller bearing 6 adopts double-row tapered rollers arranged back-to-back, and each row of rollers adopts a logarithmic curve profile design. This profile optimizes the contact stress distribution and avoids the edge stress concentration problem that is prone to occur in the traditional straight profile. An adjustable preload shim is provided between the outer bearing ring and the deck support 5. By adjusting the thickness of the shim, the bearing preload can be precisely controlled to ensure the best working state under different load conditions. This design enables the bearing to simultaneously withstand the huge bending moment generated by the gravity and wind force of the wing sail, as well as the alternating axial force caused by the ship's sway, greatly extending the service life of the bearing.

[0065] In this embodiment, the mast 1 connection module adopts an innovative sleeve-type structure design. The power shaft 7 extends upward for a certain length and is inserted into the interior of the mast 1, forming a connection method similar to a sleeve. This structure not only improves the connection strength by increasing the contact area, but more importantly, when the mast 1 is stressed and bent, the sleeve structure can effectively share the bending stress and avoid stress concentration on a single cross-section. An appropriate gap is left between the power shaft 7 and the inner wall of the mast 1, which not only ensures the assembly convenience, but also allows for slight deformation under stress to buffer the impact load. The flange connection is evenly distributed with high-strength bolts, ensuring the connection reliability and being convenient for disassembly and assembly, perfectly solving the contradictory requirements that the heavy wing sail needs to be firmly connected and easy to transport.

[0066] In a second aspect, this embodiment provides a natural energy sensing platform, including the sail rotation structure assembly as in the above embodiment.

[0067] Preferably, the natural energy sensing platform is an unmanned sailboat. The unmanned sailboat adopts the above-mentioned sail turning structure assembly, perfectly combines the sail turning structure assembly with the hull structure, and is provided with a reinforcement ring at the opening of the hull deck, which is precisely matched with the mounting surface of the deck support 5; a dedicated equipment installation platform is arranged inside the cabin to provide stable support for the electric turntable 10.

[0068] Compared with the prior art, the above embodiment provides a rotating sail structure assembly and a natural energy sensing platform, which have the advantages of small space occupation, simple structure, convenient installation and disassembly, and strong load bearing capacity, while also taking into account the requirements of convenient land transportation and sealing for marine operations, and has excellent comprehensive performance;

[0069] The worm gear reduction mechanism is used in conjunction with the stepping motor 11, which not only realizes torque amplification but also has a self-locking function, fundamentally avoiding the problem of accidental rotation of the traditional mechanism under wind load, and significantly simplifies the system structure compared with the traditional hydraulic drive;

[0070] The composite connection structure of the tension sleeve 8 and the pin significantly improves the torque transmission reliability through the triple mechanical interlocking mechanism of conical friction locking, keyway circumferential positioning and pin radial shear resistance; the elastic deformation capacity of the tension sleeve 8 can absorb impact energy, and cooperate with the shearing effect of the pin to form a graded load transmission mechanism, which not only ensures smooth transmission under normal working conditions, but also can cope with sudden impact loads;

[0071] The three-stage sealing structure achieves the synergistic effect of dynamic and static sealing through the combination of sealing rings with different cross-sectional shapes. The excellent followability of the V-shaped sealing ring compensates for the shaft deviation, the U-shaped sealing ring provides the main sealing function, and the rectangular sealing ring serves as the final line of defense, forming a progressive sealing line of defense to effectively resist seawater erosion.

[0072] The double-row tapered roller bearing 6 has a special roller profile design and cage structure. The logarithmic profile roller design of the bearing optimizes the contact stress distribution. Combined with the precise positioning function of the cage, it significantly improves the service life of the bearing under complex working conditions, allowing it to maintain stable operation under ship swaying conditions.

[0073] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0074] The above embodiments merely illustrate several implementation manners of the present invention. The description thereof is relatively specific and detailed, but it should not be construed as a limitation to the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several variations and improvements can still be made, and these all fall within the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the appended claims.

Claims

1. A sail-changing structure assembly, characterized in that, Comprising: A power input module, including a stepper motor and an electric turntable, the stepper motor is connected to the electric turntable, and the electric turntable is internally provided with a worm and worm gear reduction mechanism for providing torque amplification and self-locking functions; A power transmission module, including a power shaft and a power shaft coupling sleeve, the power shaft coupling sleeve is connected to the electric turntable, the power shaft coupling sleeve is fixed to the power shaft by a keyless connection method, and a pin is provided between the power shaft and the power shaft coupling sleeve to assist torque transmission; A sealing and supporting module, including a deck support, the deck support is fixed to the deck, the power shaft passes through the center of the deck support, and the deck support is hermetically connected to the power shaft and is used to bear the axial inertia force; A mast connection module, including a mast, a mast flange and a power shaft flange, the mast flange is welded to the lower end of the mast, the power shaft flange is welded to the upper part of the power shaft, the power shaft extends into the mast and the mast flange and the power shaft flange are detachably connected by bolts.

2. The general assembly of a sail rotating structure according to claim 1, wherein The power transmission module includes a tensioning sleeve, the power shaft coupling sleeve is fixed to the power shaft by the tensioning sleeve in a keyless connection manner, and the tensioning sleeve cooperates with the pin structure to improve torque transmission.

3. The general assembly of a sail rotating structure according to claim 2, wherein The sleeve body of the tensioning sleeve is a conical hollow structure, the outer surface of the sleeve body is provided with an axially penetrating keyway, the inner surface of the sleeve body is processed with alternately distributed annular grooves and protrusions, and the axial end of the sleeve body is provided with a flange edge with uniformly distributed bolt through holes.

4. The general assembly of a sail rotating structure according to claim 1, wherein The worm and worm gear reduction mechanism is internally provided with a rotary encoder for feedback of the rotation speed of the wing sail, and the torque and rotation speed are controlled in combination with a PID module.

5. The general assembly of a sail rotating structure according to claim 4, wherein The worm and worm gear reduction mechanism includes a worm and a worm gear, the worm is a single-head spiral structure and the tooth surface is hardened by quenching, the worm gear adopts a split structure composed of a hub and a tooth ring, the tooth ring is fixed to the hub by bolts, and the inner peripheral surface of the tooth ring is provided with an annular flange that fits into the corresponding groove of the hub.

6. The general assembly of a sail rotating structure according to claim 1, wherein The sealing and supporting module further includes a shaft seal and a double-row tapered roller bearing; The shaft seal is embedded above the deck support, the outer ring of the shaft seal cooperates with the deck support, and the inner ring of the shaft seal cooperates with the power shaft; The double-row tapered roller bearing is embedded below the deck support, the outer ring of the double-row tapered roller bearing cooperates with the deck support, and the inner ring of the double-row tapered roller bearing cooperates with the power shaft to bear the axial inertia force caused by the ship's swing.

7. The general assembly of a sail rotating structure according to claim 6, wherein The sealing housing of the shaft seal is a stepped annular structure. The inner hole of the shaft seal is provided with three-stage sealing grooves. A V-shaped cross-section sealing ring is installed in the first-stage sealing groove, a U-shaped cross-section sealing ring is installed in the second-stage sealing groove, and a rectangular cross-section sealing ring is installed in the third-stage sealing groove. The lip directions of the sealing rings at all levels face the inside of the sealing housing.

8. The assembly of a sail-turning structure according to claim 6, wherein The double-row tapered roller bearing includes an outer bearing ring, an inner bearing ring, rollers and a cage. The inner surface of the outer bearing ring is provided with two rows of inclined raceways. Logarithmic-profile rollers are evenly distributed in each row of raceways. Guide rings are provided at both ends of the rollers. The guide rings are riveted and fixed to the cage. The cage evenly spaces the rollers in the tapered raceways provided on the outer surface of the inner bearing ring and matching the rollers. The inner bearing ring is in interference fit with the power shaft.

9. The assembly of a sail-turning structure according to claim 1, wherein The electric turntable is fixed to the inner bottom plate of the cabin by bolts and serves as the fulcrum of the sail-turning structure assembly.

10. A natural energy sensing platform, characterized in that, It includes the assembly of a sail-turning structure according to any one of claims 1 to 9.

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