A method and system for converting wind energy into electricity using a windmill

Abstract

The present application relates to high-altitude wind energy field, disclose a kind of hoist type umbrella type wind energy conversion method and power generation system.The first cable of the method is tied to the edge of the umbrella of working umbrella;Second cable is tied to the top of the umbrella of working umbrella.Power generation stage, high-altitude wind energy drives working umbrella to rise, first cable and second cable respectively pull first drum and second drum to rotate, and first drum or second drum drives generator to generate electricity;Close umbrella stage, working umbrella rises to first height, first cable stops rope than second cable, umbrella edge continues to rise and folds up to close;Recycling stage, motor drives first drum and second drum to rotate simultaneously, and first cable and second cable pull working umbrella to descend;Open umbrella stage, working umbrella descends to second height, first cable stops rope than second cable, umbrella edge continues to descend and folds down to open.The present application is used to solve the opening and closing problem of umbrella type wind energy conversion device, and achieves the effect of simple, efficient and reliable.

Description

Technical Field

[0001] This invention relates to the field of high-altitude wind energy, and more specifically, to a winch-type umbrella-shaped wind energy conversion method and power generation system. Background Technology

[0002] High-altitude wind energy is a widely distributed and abundant renewable and clean energy source. Studies indicate that wind energy at high altitudes is directly proportional to the cube of wind speed; generally, a doubling of wind speed results in an eightfold increase in wind energy. Therefore, high-altitude wind energy can be tens, even hundreds or thousands of times greater than ground-based wind energy. In ideal high-altitude locations, theoretical high-altitude wind power generation can reach 95% of the year, with annual power generation exceeding 8200 hours. Even a small-capacity 10-megawatt high-altitude wind power system generates over 5000 hours of electricity annually. Therefore, high-altitude wind power generation offers advantages such as high average energy density, wide geographical distribution, high stability, and low unit cost.

[0003] A common high-altitude wind power generation system includes an umbrella-shaped wind energy conversion device (or a high-altitude kite), a main cable, a winch, and a generator. The umbrella-shaped wind energy conversion device opens and remains stable in the air. Under the influence of high-altitude winds, it rises and pulls the main cable. The upward pull of the main cable drives the winch on the ground, which in turn drives the generator to produce electricity, thus converting wind energy into mechanical energy, and mechanical energy into electrical energy. After reaching its final height, the umbrella-shaped wind energy conversion device needs to close. The winch then winds up the main cable, pulling the umbrella-shaped wind energy conversion device back to its starting height, and then reopens in the air for the next power generation cycle, repeating this process. For details, please refer to Chinese Patent CN102220938B - Umbrella-shaped Wind Power Device and Wind Power System.

[0004] Umbrella-type wind energy conversion devices require repeated opening and closing, making a simple, efficient, and reliable opening and closing method particularly important. Chinese Patent CN106523273B – A dual-drive umbrella-type wind energy conversion device and its opening and closing method – describes a device comprising: a cable; a stop fixed to the cable; an umbrella body with its top center sleeved on the cable; a first actuator connected to the top center of the umbrella body; a second actuator located between the stop and the first actuator; the second actuator is connected to the umbrella body via an umbrella cable, and the umbrella cable is connected to the edge of the umbrella body; the second actuator and / or the stop are provided with a locking mechanism capable of locking the second actuator and the stop. This solution primarily uses two actuators moving back and forth on the cable to achieve the opening and closing of the umbrella-type wind energy conversion device. The opening and closing process requires only a few movements, and the use of wind power during the process greatly reduces the energy consumption of the actuators. A similar example is Chinese Patent CN106523274B – A single-drive umbrella-type wind energy conversion device and its opening and closing method. Since the actuator in the above scheme needs to move back and forth on the cable and remain fixed, the reliability requirements of the actuator structure and the strength and wear resistance requirements of the cable are relatively high. Summary of the Invention

[0005] The present invention aims to overcome the shortcomings of at least one of the above-mentioned prior art, and provides a winch-type umbrella-shaped wind energy conversion method and power generation system to solve the opening and closing problem of the umbrella-shaped wind energy conversion device, so as to achieve a simple, efficient and reliable effect.

[0006] The technical solution adopted in this invention is a winch-type umbrella-shaped wind energy conversion method, wherein one end of a first cable is wound onto a first drum, and the other end is tied to the edge of the umbrella canopy; one end of a second cable is wound onto a second drum, and the other end is tied to the top of the umbrella canopy; the method includes the following stages:

[0007] During the power generation phase, the high-altitude wind energy drives the power umbrella to rise, the first cable and the second cable are released, the first cable pulls the first drum to rotate, the second cable pulls the second drum to rotate, and the first drum or the second drum drives the generator to generate electricity.

[0008] During the closing phase, the working umbrella rises to the first height, the first cable continues to release rope, the second cable stops releasing rope, the edge of the working umbrella continues to rise and folds upward, and the working umbrella closes.

[0009] During the recovery phase, the electric motor drives the first drum and the second drum to rotate simultaneously, and the first cable and the second cable are wound up. The first drum winds up the first cable, and the second drum winds up the second cable. The first cable and the second cable pull the parachute down.

[0010] During the opening phase, the power parachute descends to the second altitude, the first cable continues to be wound up, the second cable stops being wound up, the edge of the power parachute continues to descend and folds downward, and the power parachute opens.

[0011] In this scheme, the working umbrella is controlled by the first cable and the second cable.

[0012] During the power generation phase, the wind-driven power umbrella rises, pulling the first and second cables upwards; the first cable pulls the first drum to rotate, and the second cable pulls the second drum to rotate; the first drum drives the generator to generate electricity, while the second drum remains idle; or conversely, the second drum drives the generator to generate electricity, while the first drum remains idle.

[0013] During the closing phase, the working umbrella rises to the first height, the second drum stops rotating, the second cable stops releasing rope and tightens the top of the working umbrella canopy; the wind drives the edge of the working umbrella canopy to continue rising and folding upwards, the first cable continues to release rope, and the first drum continues to rotate until the working umbrella is completely closed.

[0014] During the recovery phase, the motor starts and drives the first and second drums to rotate simultaneously. The first drum winds up the first cable, and the second drum winds up the second cable. The first and second cables simultaneously pull the closed power parachute down.

[0015] During the deployment phase, the power parachute descends to the second altitude, the second drum stops rotating, and the second cable stops winding. Wind power drives the top of the parachute canopy upwards, while the motor continues to rotate the first drum, and the first cable continues winding, pulling the edge of the parachute canopy downwards and folding it down, completing the deployment. After deployment, the motor shuts off, the first drum stops rotating, and the first cable stops winding. Finally, the power parachute repeats these four phases in sequence, enabling continuous high-altitude wind power generation. During the parachute's ascent from the second altitude to the first altitude, it drives the generator to produce electricity.

[0016] This solution addresses the opening and closing issues of umbrella-type wind energy conversion devices by differentiating the timing of rope retraction and release between the first cable located at the edge of the umbrella canopy and the second cable located at the top of the umbrella canopy. It utilizes a combination of traditional drums, generators, and motors to enable the working umbrella to achieve four stages of operation—opening, closing, generating electricity, and recovery—with the help of wind power. This results in a simple, efficient, and reliable solution.

[0017] Preferably, the first drum, the second drum, the generator, and the motor are all fixed to the main cable; the generator generates and stores energy in the air, which is then transmitted to the ground via cable or used to power the motor. In this design, the power umbrella, the first cable, the second cable, the first drum, the second drum, the generator, and the motor constitute an umbrella-type wind energy conversion device. Compared to the ground-based generator, the airborne generation method integrates the umbrella-type wind energy conversion device into a small, independently operating power generation unit, thereby powering other equipment on the main cable and other types of umbrella-type wind energy conversion devices. Furthermore, multiple umbrella-type wind energy conversion devices can be connected in series on the main cable to fully utilize wind energy at different altitudes, increasing the total power output of wind power generation. Additionally, since each umbrella-type wind energy conversion device can operate independently, the use of the main cable for power umbrella retrieval is avoided, reducing energy consumption and thus improving the efficiency of wind power generation.

[0018] Furthermore, the edge of the umbrella canopy is attached to the first cable; one point is connected to the main cable via a roller, allowing the umbrella to rise and fall along the main cable. In this design, the edge of the umbrella canopy is fixedly connected to the first cable, while one point is movably connected to the main cable. This design restricts the movement of the umbrella along the main cable, maintaining a better aerial posture; it also allows the umbrella to rotate around the main cable under wind force when opening and closing, making opening and closing easier, more efficient, and more reliable. Using a roller for the movable connection reduces wear between the edge of the umbrella canopy and the main cable.

[0019] Preferably, when the first drum fully unwinds the first cable, the first cable stops unwinding; when the first drum winds up to the winding limit, the first cable stops winding. When the second drum fully unwinds the second cable, the second cable stops unwinding; when the second drum winds up to the winding limit, the second cable stops winding. In this design, the first and second drums may not be equipped with braking devices. The lengths of the first and second cables limit their movement, allowing them to reach the unwinding limit sequentially and stop unwinding, thus closing the power umbrella; or they may reach the winding limit sequentially and stop winding, thus opening the power umbrella. After the power umbrella opens, the power generation phase begins, and the cycle repeats automatically.

[0020] Based on the aforementioned winch-type umbrella-type wind energy conversion method, this solution also provides a winch-type umbrella-type wind power generation system, including a double-drum cable winch device. The device includes a winch body and a first drum, a second drum, a winch shaft, and a switching assembly mounted on the winch body; the first drum, the switching assembly, and the second drum are sequentially arranged side-by-side on the winch shaft; when the switching assembly is switched to a first state, the first drum rotates synchronously with the winch shaft; when the switching assembly is switched to a second state, the second drum rotates synchronously with the winch shaft; when the switching assembly is switched to an intermediate state, the first drum, the second drum, and the winch shaft rotate synchronously; the winch shaft is connected to the generator and the motor.

[0021] Preferably, the switching assembly includes a first gear, a second gear, a third gear, a gear ring, a shift fork, and a linear drive; the first gear is fixed to one side of the first drum, the second gear is fixed to one side of the second drum, the third gear is fixed to the middle of the winch shaft, and the gear ring is sleeved on the outside of the third gear; the linear drive pushes the shift fork to move the gear ring, so that the first gear, gear ring, and third gear mesh with each other, or the second gear, gear ring, and third gear mesh with each other, or the first gear, second gear, gear ring, and third gear mesh with each other.

[0022] Furthermore, the linear drive includes a switching motor and a linkage mechanism; the switching motor is fixed to the winch body; the linkage mechanism connects the switching motor and the shift fork, and the linkage mechanism is used to convert the rotational motion of the switching motor into the linear motion of the shift fork.

[0023] Preferably, the device further includes a transmission assembly; the generator and the motor are fixed to the winch body; the transmission assembly is installed at one end of the winch shaft, and the transmission assembly connects the generator, the motor and the winch shaft.

[0024] Furthermore, the transmission assembly includes a fourth gear and a fifth gear that mesh with each other. The fourth gear is connected to one end of the winch shaft, and the fifth gear is connected to one end of the generator and the motor, respectively. The number of teeth on the fourth gear is greater than the number of teeth on the fifth gear.

[0025] Optionally, it also includes a guide assembly, which is installed on the winch body at the cable entry and exit positions. The guide assembly is used to guide and correct the attitude of the cable when the first drum or the second drum is winding and unwinding.

[0026] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0027] This solution utilizes differentiated rope winding and unwinding between the first cable located at the edge of the umbrella canopy and the second cable located at the top of the umbrella canopy. By combining traditional drums, generators, and electric motors, the working umbrella achieves four stages of operation—opening, closing, generating electricity, and recovery—with the help of wind power. This solves the problem of opening and closing umbrella-type wind energy conversion devices, achieving a simple, efficient, and reliable result.

[0028] This solution uses a first drum and a second drum to hold two cables respectively. When the switching component switches states, the first drum and the second drum are dynamically coupled to the winch shaft in a timely manner, so that the first drum and the second drum can wind up and unwind their respective cables separately or simultaneously. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the power generation stage of the present invention.

[0030] Figure 2 This is a schematic diagram of the umbrella-closing stage of the present invention.

[0031] Figure 3 This is a schematic diagram of the recycling stage of the present invention.

[0032] Figure 4 This is a schematic diagram of the umbrella opening stage of the present invention.

[0033] Figure 5 This is a structural diagram of Embodiment 1 of the present invention.

[0034] Figure 6 This is a left view of Embodiment 1 of the present invention.

[0035] Figure 7 This is a schematic diagram of the first state of Embodiment 1 of the present invention.

[0036] Figure 8 This is a schematic diagram of the second state of Embodiment 1 of the present invention.

[0037] Figure 9 This is a schematic diagram of an intermediate state in Embodiment 1 of the present invention.

[0038] Figure 10 This is a perspective view of Embodiment 1 of the present invention.

[0039] Label Explanation 1: Power umbrella 10, main cable 20, first cable 21, second cable 22, roller 30, lift guide 40, first height H1, second height H2.

[0040] Label Explanation 2: Hoist body 110, first drum 120, second drum 130, hoist shaft 140, switching assembly 150, first gear 151, second gear 152, third gear 153, gear ring 154, shift fork 155, switching motor 156, linkage mechanism 157, power assembly 160, generator 161, electric motor 162, transmission assembly 170, fourth gear 171, fifth gear 172, guide assembly 180, vertical roller 181, horizontal roller 182. Detailed Implementation

[0041] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the invention. To better illustrate the following embodiments, some parts in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions; it is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0042] like Figures 1 to 4 As shown, this technical solution is a winch-type umbrella-shaped wind energy conversion method, wherein one end of the first cable 21 is wound onto the first drum 120, and the other end is tied to the edge of the umbrella surface of the working umbrella 10; one end of the second cable 22 is wound onto the second drum 130, and the other end is tied to the top of the umbrella surface of the working umbrella 10; including the following stages:

[0043] During the power generation phase, the high-altitude wind energy drives the power umbrella 10 to rise, the first cable 21 and the second cable 22 are released, the first cable 21 pulls the first drum 120 to rotate, the second cable 22 pulls the second drum 130 to rotate, and the first drum 120 or the second drum 130 drives the generator to generate electricity.

[0044] During the closing phase, the working umbrella 10 rises to the first height H1, the first cable 21 continues to release the cable, the second cable 22 stops releasing the cable, the edge of the canopy of the working umbrella 10 continues to rise and folds upward, and the working umbrella 10 closes.

[0045] During the recovery phase, the motor drives the first drum 120 and the second drum 130 to rotate simultaneously, the first cable 21 and the second cable 22 are wound up, the first drum 120 winds up the first cable 21, the second drum 130 winds up the second cable 22, and the first cable 21 and the second cable 22 pull the power umbrella 10 down.

[0046] During the opening phase, the power parachute 10 descends to the second altitude H2, the first cable 21 continues to be wound up, the second cable 22 stops being wound up, the edge of the canopy of the power parachute 10 continues to descend and folds downward, and the power parachute 10 opens.

[0047] In this scheme, the working umbrella 10 is traction controlled by the first cable 21 and the second cable 22.

[0048] During the power generation phase, the wind-driven power umbrella 10 rises, pulling the first cable 21 and the second cable 22 upwards; the first cable 21 pulls the first drum 120 to rotate, and the second cable 22 pulls the second drum 130 to rotate; the first drum 120 drives the generator to generate electricity, while the second drum 130 remains idle; or conversely, the second drum 130 drives the generator to generate electricity, while the first drum 120 remains idle.

[0049] During the closing phase, the working umbrella 10 rises to the first height H1, the second drum 130 stops rotating, the second cable 22 stops releasing the rope and tightens the top of the canopy of the working umbrella 10; the wind drives the edge of the canopy of the working umbrella 10 to continue to rise and fold upward, the first cable 21 continues to release the rope, and the first drum 120 continues to rotate until the working umbrella 10 is completely closed.

[0050] During the recovery phase, the motor starts and drives the first drum 120 and the second drum 130 to rotate simultaneously. The first drum 120 winds up the first cable 21, and the second drum 130 winds up the second cable 22. The first cable 21 and the second cable 22 simultaneously pull the closed power umbrella 10 down.

[0051] During the opening phase, the power umbrella 10 descends to the second height H2, the second drum 130 stops rotating, and the second cable 22 stops winding. Wind power drives the top of the power umbrella 10 upwards, while the motor continues to rotate the first drum 120. The first cable 21 continues winding and pulls the edge of the power umbrella 10 downwards, folding it down, thus completing the opening of the power umbrella 10. After the power umbrella 10 opens, the motor shuts off, the first drum 120 stops rotating, and the first cable 21 stops winding. Finally, the power umbrella 10 repeats the above four stages in sequence, thus achieving continuous high-altitude wind power generation.

[0052] This solution utilizes the differentiated timing of rope retraction and release between the first cable 21 located at the edge of the umbrella surface and the second cable 22 located at the top of the umbrella surface. By combining the traditional combination of drum, generator and motor, the working umbrella 10 achieves four stages of operation: opening, closing, power generation and recovery, with the help of wind power. This solves the problem of opening and closing the umbrella-type wind energy conversion device and achieves a simple, efficient and reliable effect.

[0053] Preferably, the first drum 120, the second drum 130, the generator, and the motor are all fixed to the main cable 20; the generator generates and stores energy in the air, which is then transmitted to the ground via cable or used to power the motor. In this design, the power umbrella 10, the first cable 21, the second cable 22, the first drum 120, the second drum 130, the generator, and the motor constitute an umbrella-type wind energy conversion device. Compared to the ground-based generator, the airborne generation method integrates the umbrella-type wind energy conversion device into a small, independently operating power generation unit, thereby powering other equipment on the main cable 20 and other types of umbrella-type wind energy conversion devices; multiple umbrella-type wind energy conversion devices can also be connected in series on the main cable 20 to fully utilize wind energy at different altitudes and increase the total power output of wind power generation; furthermore, since each umbrella-type wind energy conversion device can operate independently, the use of the main cable 20 for retrieving the power umbrella 10 is avoided, reducing energy consumption and thus improving the efficiency of wind power generation.

[0054] Furthermore, the edge of the umbrella canopy 10 is attached to the first cable 21; one point is connected to the main cable 20 via a roller 30, allowing the umbrella 10 to rise and fall along the main cable 20. In this design, the edge of the umbrella canopy is fixedly connected to the first cable 21, while one point is movably connected to the main cable 20. This restricts the movement of the umbrella 10 along the main cable 20, maintaining a better aerial posture; it also allows the umbrella 10 to rotate around the main cable 20 under wind force when opening and closing, making opening and closing easier, more efficient, and more reliable. Using the roller 30 for the movable connection reduces wear between the edge of the umbrella canopy 10 and the main cable 20.

[0055] Preferably, when the first drum 120 fully extends the first cable 21, the first cable 21 stops extending; when the first drum 120 winds up to the winding limit, the first cable 21 stops winding; when the second drum 130 fully extends the second cable 22, the second cable 22 stops extending; when the second drum 130 winds up to the winding limit, the second cable 22 stops winding. In this design, the first drum 120 and the second drum 130 may not be equipped with braking devices. By limiting the lengths of the first cable 21 and the second cable 22, the first cable 21 and the second cable 22 can reach the extension limit sequentially, stopping extension and closing the power umbrella 10; or they can reach the winding limit sequentially, stopping winding and opening the power umbrella 10. After the power umbrella 10 opens, it immediately enters the power generation stage, automatically cycling.

[0056] In some embodiments, during the power generation phase, the high-altitude wind energy drives the power umbrella to rise, the first cable and the second cable are released, the first cable pulls the first drum 120 to rotate, the second cable pulls the second drum 130 to rotate, and the first drum 120 and the second drum 130 respectively drive the generator to generate electricity.

[0057] In some embodiments, one end of the first cable is connected to the edge of the umbrella canopy via multiple thin ropes. The center of the top of the umbrella canopy is connected to the main cable via a roller or sleeve, and the umbrella rises and falls along the main cable.

[0058] Example 1

[0059] like Figures 5 to 10 As shown, this embodiment is a double-drum cable winch device, including a winch body 110 and a first drum 120, a second drum 130, a winch shaft 140, and a switching assembly 150 mounted on the winch body 110. The first drum 120, the switching assembly 150, and the second drum 130 are sequentially arranged side by side on the winch shaft 140. When the switching assembly 150 is switched to a first state, the first drum 120 and the winch shaft 140 rotate synchronously. When the switching assembly 150 is switched to a second state, the second drum 130 and the winch shaft 140 rotate synchronously. When the switching assembly 150 is switched to an intermediate state, the first drum 120, the second drum 130, and the winch shaft 140 rotate synchronously.

[0060] In this design, the first drum 120 and the second drum 130 can each rotate freely on the hoisting shaft 140. The switching component 150 has three states: In the first state, the switching component 150 is connected to the first drum 120, so the first drum 120 rotates synchronously with the hoisting shaft 140, and the first drum 120 independently winds up and unwinds the first cable; In the second state, the switching component 150 is connected to the second drum 130, so the second drum 130 rotates synchronously with the hoisting shaft 140, and the second drum 130 independently winds up and unwinds the second cable; In the intermediate state, the switching component 150 is connected to both the first drum 120 and the second drum 130, so the first drum 120 and the second drum 130 rotate synchronously with the hoisting shaft 140, and the first drum 120 and the second drum 130 simultaneously wind up and unwind the first and second cables. This solution uses a first drum 120 and a second drum 130 to accommodate two cables respectively. When the switching component 150 switches states, the first drum 120 and the second drum 130 are dynamically coupled with the winch shaft 140 in a timely manner, so that the first drum 120 and the second drum 130 can wind up and unwind their respective cables separately or simultaneously.

[0061] like Figures 7 to 9As shown, preferably, the switching assembly 150 includes a first gear 151, a second gear 152, a third gear 153, a gear ring 154, a shift fork 155, and a linear drive; the first gear 151 is fixed to one side of the first drum 120, the second gear 152 is fixed to one side of the second drum 130, the third gear 153 is fixed to the middle of the winch shaft 140, and the gear ring 154 is sleeved on the outside of the third gear 153; the linear drive pushes the shift fork 155 to move the gear ring 154, so that the first gear 151, gear ring 154, and third gear 153 mesh with each other, or the second gear 152, gear ring 154, and third gear 153 mesh with each other, or the first gear 151, second gear 152, gear ring 154, and third gear 153 mesh with each other.

[0062] In this design, the first gear 151 rotates synchronously with the first drum 120, the second gear 152 rotates synchronously with the second drum 130, and the third gear 153 rotates synchronously with the hoist shaft 140. The gear ring 154 can mesh with the first gear 151, the second gear 152, or the third gear 153. When the shift fork 155 moves the gear ring 154 to the first position, the first gear 151, the gear ring 154, and the third gear 153 mesh with each other, causing the first drum 120 to rotate synchronously with the hoist shaft 140. When the shift fork 155 moves the gear ring 154 to the second position, the second gear 152, the gear ring 154, and the third gear 153 mesh with each other, causing the second drum 130 to rotate synchronously with the hoist shaft 140. When the shift fork 155 moves the gear ring 154 to the middle position, the first gear 151, the second gear 152, the gear ring 154, and the third gear 153 mesh with each other, causing the first drum 120, the second drum 130, and the hoisting shaft 140 to rotate synchronously. The switching assembly 150 in this design achieves power coupling between the first drum 120, the second drum 130, and the hoisting shaft 140 through the shift fork 155 and gear meshing, offering advantages such as high reliability and high transmission efficiency.

[0063] In other embodiments, the switching component may also be an existing multi-plate electronically controlled clutch, with multiple shaft ends connected to the first drum 120, the second drum 130 and the winch shaft, respectively.

[0064] Furthermore, the linear drive component includes a switching motor 156 and a linkage mechanism 157; the switching motor 156 is fixed to the winch body 110; the linkage mechanism 157 connects the switching motor 156 and the shift fork 155, and the linkage mechanism 157 is used to convert the rotational motion of the switching motor 156 into the linear motion of the shift fork 155. The switching motor 156 is preferably a stepper motor to achieve precise position control of the shift fork 155. The linkage mechanism 157 is a crank-slider mechanism.

[0065] In other embodiments, the linear drive may also be an existing linear motor or electric cylinder, whose output shaft is directly connected to the shift fork.

[0066] Furthermore, the surface of the toothed ring 154 is provided with an annular groove, the shape of which is adapted to the shape of the shift fork 155. The shift fork 155 moves the toothed ring 154 between a first position, an intermediate position, and a second position through the annular groove.

[0067] Preferably, the system further includes a power assembly 160 and a transmission assembly 170; the power assembly 160 is fixed to one side of the winch body 110; the transmission assembly 170 is installed at one end of the winch shaft 140, and the transmission assembly 170 connects the power assembly 160 and the winch shaft 140. The power assembly 160 can be used to provide power for winding the cable to the first drum 120 and the second drum 130 on the winch shaft 140, and can also be used to generate electricity using the kinetic energy of the winch shaft 140 when the cable is unwound.

[0068] Furthermore, the transmission assembly 170 includes a fourth gear 171 and a fifth gear 172 that mesh with each other. The fourth gear 171 is connected to one end of the winch shaft 140, and the fifth gear 172 is connected to one end of the power assembly 160. The number of teeth on the fourth gear 171 is greater than the number of teeth on the fifth gear 172. Through the design of different numbers of teeth, the transmission assembly 170 in this solution can reduce the rotational speed of one end of the winch shaft 140 and increase the torque during the cable winding stage, thereby providing slow and powerful winding power. During the cable unwinding stage, it can reduce the torque of one end of the power assembly 160 and increase the rotational speed, thereby providing long-term, stable power generation.

[0069] Furthermore, the power assembly 160 includes a generator 161 and a motor 162, one end of the generator 161 being connected to one of the fifth gears 172, and one end of the motor 162 being connected to the other of the fifth gears 172.

[0070] In other embodiments, the transmission component may also be a belt drive or chain drive that includes a transmission ratio.

[0071] Optionally, a guide assembly 180 is also included. The guide assembly 180 is installed on the hoist body 110 at the cable entry and exit positions. The guide assembly 180 is used to guide and correct the attitude of the cable during winding and unwinding of the first drum 120 or the second drum 130. The guide assembly 180 is particularly suitable for cases where the cable is a flat strip. After the cable is unwound, it is easy to twist around its own axis under the interference of tangential external force. If it is directly wound into the drum, the cable will be messy and overlapping, increasing the space after the drum is wound; at the same time, it will also cause the cable to bend and entangle, reducing its service life. The addition of the guide assembly 180 can first straighten the cable, so that the cable is wound and unwound in the same attitude (front or back).

[0072] Preferably, the hoist body 110 is a box body, including a first inner cavity, a middle inner cavity and a second inner cavity arranged in parallel; the first drum 120 is located in the first inner cavity, the switching component 150 is located in the middle inner cavity, and the second drum 130 is located in the second inner cavity.

[0073] Optionally, the hoist body 110 is also provided with a power enclosure or a transmission enclosure. The power enclosure is installed around the power assembly 160 to protect the power assembly 160; the transmission enclosure is installed around the transmission assembly 170 to protect the transmission assembly 170.

[0074] In this embodiment, the winch body 110 is assembled from aluminum alloy sheets using fasteners to form a housing, achieving a lightweight effect. The winch shaft 140 is centrally mounted on the axis of the winch body 110 via bearings, allowing it to rotate freely and transmit power. The first drum 120 and the second drum 130 are also respectively mounted on the winch shaft 140 via bearings, distributed in the first and second inner cavities of the winch body 110.

[0075] In this embodiment, the first gear 151, the second gear 152, the third gear 153, and the gear ring 154 all have the same number of teeth and module. The first gear 151 is located on the side of the first drum 120 near the central cavity, the second gear 152 is located on the side of the second drum 130 near the central cavity, and the third gear 153 is located between the central cavity and the first gear 151 and the second gear 152. The shift fork 155 is located on one side of the gear ring 154, and one end of the shift fork 155 is inserted into the annular groove of the gear ring 154. The switching motor 156 is mounted on the wall of the central cavity, and the linkage mechanism 157 connects the switching motor 156 and the shift fork 155.

[0076] In this embodiment, the electric motor 162 and the generator 161 are mounted side by side on an extension plate on one side of the winch body 110. The fourth gear 171 and the fifth gear 172 are located on the same side.

[0077] In this embodiment, the guide assembly 180 consists of vertical rollers 181 and horizontal rollers 182 arranged in a "U" shape. The spacing between the vertical rollers 181 is slightly larger than the width of the cable, and the spacing between the horizontal rollers 182 is slightly larger than the thickness of the cable. The guide assembly 180 has two sets, located on the first inner cavity surface and the second inner cavity surface of the hoist body 110, respectively.

[0078] Example 2

[0079] like Figures 1 to 10 As shown, this embodiment is a winch-type umbrella-shaped wind power generation system, including a power umbrella 10, a main cable 20, a first cable 21, a second cable 22, a roller 30, a lifting guide body 40, and the double-drum cable winch device described in Embodiment 1.

[0080] One end of the main cable 20 is fixed to the ground, and the other end is suspended in the air by a lift guide 40. The lift guide 40 provides lift to the main cable 20 and the equipment fixed to it. One edge of the umbrella canopy of the working umbrella 10 is connected to the main cable 20 via a roller 30, while the remaining edge is attached to the first cable 21; the top of the umbrella canopy is attached to the second cable 22. The first cable 21 is wound onto the first drum 120 of the double-drum cable winch. The second cable 22 is wound onto the second drum 130 of the double-drum cable winch. The double-drum cable winch is fixedly installed on the main cable 20, located below the working umbrella 10.

[0081] Optionally, multiple working umbrellas 10 are arranged sequentially from bottom to top on the main cable 20, and corresponding to them are multiple first cables 21, second cables 22, rollers 30 and double-drum cable winches.

[0082] The working process of the power umbrella 10 in this embodiment is as follows:

[0083] During the power generation phase, the high-altitude wind-driven power umbrella 10 rises along the main cable 20, while the first cable 21 and the second cable 22 are released. The first cable 21 pulls the first drum 120 to rotate, and the switching component 150 switches to the first state. The first drum 120 rotates synchronously with the winch shaft 140, which drives the generator 161 to start generating electricity via the transmission component 170. The second cable 22 pulls the second drum 130 to rotate, and the second drum 130 spins freely on the winch shaft 140.

[0084] During the closing phase, the power parachute 10 rises to the first height H1, and the generator 161 stops generating electricity. The second cable 22 reaches the release limit and stops releasing the cable. The first cable 21 continues to release the cable, and the edge of the power parachute 10 continues to rise and fold upwards. When the first cable 21 reaches the release limit, the power parachute 10 completes its closure.

[0085] During the recovery phase, the switching component 150 switches to the intermediate state, the motor 162 starts, and drives the winch shaft 140 to rotate via the transmission component 170. The first drum 120, the second drum 130, and the winch shaft 140 rotate simultaneously. The first drum 120 winds up the first cable 21, and the second drum 130 winds up the second cable 22. The first cable 21 and the second cable 22 are wound up simultaneously, pulling the power umbrella 10 down along the main cable 20.

[0086] During the opening phase, the power umbrella 10 descends to the second height H2, and the switching component 150 switches to the first state. The second drum 130 stops rotating, and the second cable 22 reaches the cable retraction limit and stops retraction. The first drum 120 rotates synchronously with the winch shaft 140, the first cable 21 continues to retract, and the edge of the power umbrella 10 continues to descend and fold downwards. When the first cable 21 reaches the cable retraction limit, the motor 162 shuts off, and the power umbrella 10 completes its opening.

[0087] Obviously, the above embodiments of the present invention are merely examples to clearly illustrate the technical solutions of the present invention, and are not intended to limit the specific implementation of the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the claims of the present invention should be included within the protection scope of the claims of the present invention.

Claims

1. A winch-type umbrella-shaped wind energy conversion method, characterized in that, One end of the first cable is wound onto the first drum, and the other end is tied to the edge of the umbrella canopy; one end of the second cable is wound onto the second drum, and the other end is tied to the top of the umbrella canopy; including the following stages: During the power generation phase, the high-altitude wind energy drives the power umbrella to rise, the first cable and the second cable are released, the first cable pulls the first drum to rotate, the second cable pulls the second drum to rotate, and the first drum or the second drum drives the generator to generate electricity. During the closing phase, the working umbrella rises to the first height, the first cable continues to release rope, the second cable stops releasing rope, the edge of the working umbrella continues to rise and folds upward, and the working umbrella closes. During the recovery phase, the electric motor drives the first drum and the second drum to rotate simultaneously, and the first cable and the second cable are wound up. The first drum winds up the first cable, and the second drum winds up the second cable. The first cable and the second cable pull the parachute down. During the deployment phase, the power parachute descends to the second altitude, the first cable continues to be wound up, and the second cable stops being wound up. The edge of the umbrella continues to descend and fold downwards, opening the power umbrella; The first drum, the second drum, the generator, and the motor are all fixed to the main cable; the generator generates and stores energy in the air, which is then transmitted to the ground via cable or used to power the motor. The edge of the umbrella canopy is attached to the first cable; one of the points is connected to the main cable via a roller, and the umbrella rises and falls along the main cable.

2. The winch-type umbrella-shaped wind energy conversion method according to claim 1, characterized in that, When the first drum fully releases the first cable, the first cable stops releasing; when the first drum is wound up to the winding limit, the first cable stops winding; when the second drum fully releases the second cable, the second cable stops releasing; when the second drum is wound up to the winding limit, the second cable stops winding.

3. A winch-type umbrella-shaped wind power generation system, characterized in that, The device includes a double-drum cable winch, employing the winch-type umbrella-shaped wind energy conversion method as described in any one of claims 1 to 2. The double-drum cable winch includes a winch body and a first drum, a second drum, a winch shaft, and a switching assembly mounted on the winch body. The first drum, the switching assembly, and the second drum are sequentially arranged side-by-side on the winch shaft. When the switching assembly is switched to a first state, the first drum rotates synchronously with the winch shaft. When the switching assembly is switched to a second state, the second drum rotates synchronously with the winch shaft. When the switching assembly is switched to an intermediate state, the first drum, the second drum, and the winch shaft rotate synchronously. The winch shaft is connected to the generator and the motor.

4. A winch-type umbrella-shaped wind power generation system according to claim 3, characterized in that, The switching assembly includes a first gear, a second gear, a third gear, a gear ring, a shift fork, and a linear drive. The first gear is fixed to one side of the first drum, the second gear is fixed to one side of the second drum, the third gear is fixed to the middle of the winch shaft, and the gear ring is sleeved on the outside of the third gear. The linear drive moves the gear ring by pushing the shift fork, so that the first gear, gear ring, and third gear mesh with each other, or the second gear, gear ring, and third gear mesh with each other, or the first gear, second gear, gear ring, and third gear mesh with each other.

5. A winch-type umbrella-shaped wind power generation system according to claim 4, characterized in that, The linear drive includes a switching motor and a linkage mechanism; the switching motor is fixed to the winch body; the linkage mechanism connects the switching motor and the shift fork, and the linkage mechanism is used to convert the rotational motion of the switching motor into the linear motion of the shift fork.

6. A winch-type umbrella-shaped wind power generation system according to claim 3, characterized in that, It also includes a transmission assembly; the generator and the motor are fixed to the winch body; the transmission assembly is installed at one end of the winch shaft, and the transmission assembly connects the generator, the motor and the winch shaft.

7. A winch-type umbrella-shaped wind power generation system according to claim 6, characterized in that, The transmission assembly includes a fourth gear and a fifth gear that mesh with each other. The fourth gear is connected to one end of the winch shaft, and the fifth gear is connected to one end of the generator and the motor, respectively. The number of teeth on the fourth gear is greater than the number of teeth on the fifth gear.

8. A winch-type umbrella-shaped wind power generation system according to claim 3, characterized in that, It also includes a guide assembly, which is installed on the winch body at the cable entry and exit positions. The guide assembly is used to guide and correct the attitude of the cable when the first drum or the second drum is winding and unwinding.

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