A small wind generator erecting device

Abstract

The application discloses a small wind power generator erecting device and relates to the hoisting technology field of wind power generators. The small wind power generator erecting device comprises a lifting hook a and a second lifting hook, further comprises a single lifting rope installed above the lifting hook a and a second lifting rope installed above the second lifting hook, and a second winding wheel and a first winding wheel arranged side by side and used for winding the single lifting rope and the second lifting rope respectively, wherein one end of the first winding wheel is provided with a winding motor capable of providing winding driving force. The small wind power generator erecting device adjusts the winding speed of the two groups of winding wheels by equipping the winding wheels of the two groups of lifting ropes with stepless speed change structures, thereby changing the lifting speed of the two groups of lifting ropes on the power generation fan, finally realizing the adjustment of the angle of the power generation fan, and when the angle is adjusted, the generator is still in the lifting state, thereby realizing the purpose of adjusting the angle while lifting.

Description

Technical Field

[0001] This invention relates to the field of wind turbine hoisting tools, specifically a small wind turbine erection device. Background Technology

[0002] A wind turbine is an electrical device that converts wind energy into mechanical work, which drives a rotor to rotate and ultimately outputs alternating current (AC). A wind turbine typically consists of components such as a wind turbine rotor, generator (including the generator itself), directional control unit (tail fin), tower, speed limiting safety mechanism, and energy storage device.

[0003] The working principle of a wind turbine is relatively simple. The wind turbine rotates under the action of wind, which converts the kinetic energy of the wind into the mechanical energy of the wind turbine shaft. The generator rotates and generates electricity under the drive of the wind turbine shaft.

[0004] In the existing hoisting equipment, the three blades need to be assembled on the fan core, and then the hook lifts the fan blades. The crane is used to lift the generator fan horizontally, while another crane uses its own cantilever to press down one of the generator fan blades, thereby achieving the purpose of making the generator fan perpendicular to the bottom surface, which facilitates the vertical installation of the generator fan after hoisting.

[0005] This method requires two sets of cranes, which is quite cumbersome. To address this, patent CN218025096U proposes a wind turbine hoisting tool with a flipping device to adjust the installation angle of the wind turbine. Specifically, "when it is necessary to install the wind turbine, the third motor 29 is driven. The motor shaft of the third motor 29 drives the rotating roller 28 to rotate. The rotating roller 28 synchronously retracts and releases the flipping rope 27. The flipping rope 27 is stably transmitted on the first fixed pulley 24 and the second fixed pulley 25. The height of the hook 21 is adjusted through the movable pulley 26, thereby achieving one end of the wind turbine hoisting being raised and the other end being lowered, with the lifting and lowering distances being equal. This flips the wind turbine hoisting, making it easier to install the wind turbine."

[0006] Structures such as those in the aforementioned equipment all require separate lifting ropes and turning ropes, which cannot be combined, resulting in numerous lifting points and extensive preparations before lifting. Summary of the Invention

[0007] To address the shortcomings of existing technologies, this invention provides a small wind turbine erection device that solves the problem that existing technologies require separate lifting ropes and turning ropes, which cannot be combined, resulting in multiple lifting points and inconvenient lifting.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a small wind turbine erection device, comprising a hook a and a second hook, and further comprising: a single lifting rope installed above the hook a and a second lifting rope installed above the second hook; a second winding wheel and a first winding wheel arranged side by side for winding the single lifting rope and the second lifting rope respectively, wherein one end of the first winding wheel is provided with a winding motor capable of providing winding driving force; a continuously variable transmission structure, wherein the continuously variable transmission structure is used to drive the first winding wheel and the second winding wheel, and the continuously variable transmission structure can realize the relative speed change of the first winding wheel and the second winding wheel to adjust the angle of the generator fan.

[0009] Furthermore, it also includes a base, which is fixed on the crane, and the first winding reel and the second winding reel are both mounted on the base via bearing seat b;

[0010] The continuously variable transmission structure includes two sets of pulleys located at one end of the first winding wheel and the second winding wheel. Each set of pulleys includes a conical wheel with opposite tips, and a connecting rod is slidably connected between the two opposing conical wheels. A speed-changing steel belt is connected between the two sets of conical wheels. A limiting wheel is fixed on the other side of the conical wheel. The upper surface of the base is equipped with a drive structure that can drive the limiting wheel to move axially.

[0011] Furthermore, a groove is formed in the circumferential center of the restricted wheel;

[0012] The drive structure includes a push ring that is inserted into the groove and a nut that is fixed below the push ring to form an integral structure. The upper surface of the base is provided with a bidirectional lead screw along the pulley axis at the position corresponding to the nut, which can drive the nuts in the same group to move relative to or in opposite directions. A limit ring is fixedly connected to the middle of the bidirectional lead screw.

[0013] Furthermore, a bearing seat c for supporting a bidirectional lead screw is fixed on the upper surface of the base, and a guide shaft for guiding the nut is provided between the two bearing seats c. An AC servo motor capable of driving the rotation of any bidirectional lead screw is installed above the base, and a transmission assembly is connected between the other ends of the two bidirectional lead screws.

[0014] Furthermore, a sliding rod is fixed to one end of the pulley near the first winding wheel and the second winding wheel;

[0015] A take-up cylinder is fixed at the central axis of the first take-up reel and the second take-up reel. The sliding rod is inserted into the inside of the take-up cylinder and drives the take-up cylinder to rotate. A buffer spring c is provided between the sliding rod and the take-up cylinder to restrict the movement of the wheel.

[0016] Furthermore, it also includes a cantilever base fixed to the top of the crane's telescopic boom;

[0017] The upper surface of the cantilever base is provided with a converging guide wheel and a single rope guide wheel. The converging guide wheel is fixed to the top surface of the cantilever base through a bearing seat a. The single rope is guided by the single rope guide wheel and then wound by the second winding wheel. The second rope is guided by the converging guide wheel and then wound by the first winding wheel.

[0018] Furthermore, the single rope guide wheel is elastically supported on the top surface of the cantilever base by a force spring, and a column is provided below the single rope guide wheel to guide the force spring. A pressure sensor is installed inside the cantilever base at a position perpendicular to the column, and a pressure plate that can cooperate with the pressure sensor is fixed at the bottom end of the column.

[0019] The controller receives the detection signal from the pressure sensor and controls the AC servo motor.

[0020] A manual adjustment knob is provided to manually control the AC servo motor and thus the angle at which the generator fan is suspended.

[0021] Furthermore, the second hook includes hook b and hook c;

[0022] The second lifting rope includes a hook rope b connected to hook b, a hook rope c connected to hook c for assembling and locking the upper end of hook rope c and hook rope b, and a assembling lifting rope connected to the upper end of the assembling and positioning block. The upper end of the assembling lifting rope is wound up by a first winding wheel.

[0023] A guide rod is installed on one side of the lower part of the merging positioning block;

[0024] A single positioning block is fixed to the single suspension rope at a position flush with the converging positioning block. The single positioning block includes a positioning block body locked to the single suspension rope, a bracket integrally formed on the outside of the positioning block body, and a slider installed between two brackets. The slider can slide on the guide rod.

[0025] Furthermore, the winding motor is mounted on a base below it via a motor buffer spring. The base is provided with a guide arm that is guided by the motor buffer spring. The top surface of the winding cylinder is provided with a fan plate, and the fan plate is connected to the winding motor via a V-shaped elastic plate.

[0026] Furthermore, a winding guide wheel is provided above the first winding wheel. The winding guide wheel is installed between two bearing seats b via a long shaft, and guide wheel buffer springs are sleeved at both ends of the long shaft.

[0027] The present invention has the following beneficial effects:

[0028] (1) The small wind turbine erection device adjusts the winding speed of the two sets of winding wheels by equipping the winding wheels of the two sets of lifting ropes with a continuously variable transmission structure, thereby adjusting the lifting speed of the two sets of lifting ropes on the generator fan and ultimately achieving the adjustment of the generator fan angle. Furthermore, the generator is still in the rising state when the angle is adjusted, thus achieving the purpose of adjusting the angle while lifting.

[0029] (2) The small wind turbine erection device combines the existing turning rope and lifting rope into one, that is, the lifting rope itself can be used as the turning rope to meet the simplicity of lifting and turning. It only requires two lifting points (hook a and the second hook) to achieve the overall lifting and turning. The operation is simple and the preparation work required before lifting is less.

[0030] (3) The small wind turbine erection device adjusts the continuously variable transmission structure by setting a drive structure with a lead screw as the driving force, so as to achieve stable and precise speed regulation of the two winding wheels by the continuously variable transmission structure.

[0031] (4) The small wind turbine erection device, through the controller, the pressure sensor set on the guide wheel, and the AC servo motor equipped on the drive structure, so that when the pressure sensor is no longer under force, the pressure sensor transmits the signal to the controller, the controller controls the AC servo motor to work, so that it controls the drive structure to drive the continuously variable transmission structure to restore the original state, and then the rotation speed of the first winding wheel and the second winding wheel returns to the same speed, so that the winding speed of the two suspension ropes is consistent, so that when the generator fan is perpendicular to the bottom surface, the single suspension rope and the second suspension rope simultaneously apply force to continuously lift the generator fan upward to the required installation position, and the vertical upward lifting stability is higher.

[0032] (5) The small wind turbine erection device is equipped with a manual adjustment knob to manually control the AC servo motor, thereby satisfying the change in the rotation speed of the two pulleys during the lifting or installation process, thereby realizing the change in the winding speed of the single lifting rope and the combined lifting rope, and realizing that the required lifting and installation angle of the wind turbine is arbitrary.

[0033] (6) The small wind turbine erection device uses three hooks to lift the three blades of the generator fan as lifting points, thereby making the lifting more stable.

[0034] Of course, any product implementing this invention does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0035] Figure 1 This is a structural schematic diagram of the lifting stage of the present invention;

[0036] Figure 2This is a schematic diagram of the angle adjustment stage of the present invention;

[0037] Figure 3 For the present invention Figure 2 A partial view;

[0038] Figure 4 For the present invention Figure 3 A partial view;

[0039] Figure 5 For the present invention Figure 3 Schematic diagram of a continuously variable transmission (CVT) structure;

[0040] Figure 6 For the present invention Figure 5 A schematic diagram of the transverse steel belt cut in half;

[0041] Figure 7 For the present invention Figure 1 A diagram showing the pulley configuration of a continuously variable transmission (CVT).

[0042] Figure 8 This is a schematic diagram of the driving structure of the present invention;

[0043] Figure 9 This is an assembly diagram of the sliding rod and the winding shaft of the present invention;

[0044] Figure 10 This is a schematic diagram of the installation of the guide wheel of the present invention;

[0045] Figure 11 For the present invention Figure 2 Diagram showing the relative positions of the hooks;

[0046] Figure 12 For the present invention Figure 11 Enlarged view of area A in the image;

[0047] Figure 13 For the present invention Figure 1 Enlarged view of area B in the image;

[0048] Figure 14 This is an exploded view of the fan plate and V-shaped elastic plate of the present invention;

[0049] Figure 15 This is the control diagram of the AC servo motor of the present invention;

[0050] Figure 16 This is a bottom-view diagram of the winding motor of the present invention.

[0051] In the diagram, 1. Hook a; 2. Hook b; 3. Hook c; 4. Hook rope c; 5. Hook rope b; 6. Guide rod; 71. Converging guide wheel; 72. Single rope guide wheel; 721. Force spring; 722. Column; 723. Pressure plate; 724. Pressure sensor; 8. Converging lifting rope; 9. Single positioning block; 91. Positioning block body; 92. Card seat; 93. Slider; 10. Single lifting rope; 11. Cantilever base; 12. Bearing seat a; 13. Winding guide wheel; 14. Motor buffer spring; 141. Guide arm; 15. Guide wheel buffer spring; 16. Bearing seat b; 17. First winding wheel; 18. Second winding wheel; 19. None 191. Speed-changing structure; 192. Limiting wheel; 193. Grooved ring; 194. Speed-changing steel belt; 195. Conical wheel; 196. Connecting rod; 20. Base; 21. Rewinding motor; 22. Sliding rod; 23. Drive structure; 231. AC servo motor; 232. Nut; 233. Limiting ring; 234. Two-way lead screw; 235. Push ring; 236. Guide shaft; 237. Bearing seat c; 238. Transmission assembly; 24. Buffer spring c; 25. Converging positioning block; 26. Controller; 27. Manual adjustment knob; 28. Fan plate; 29. ​​V-shaped elastic plate; 30. Rewinding cylinder; 31. Foolproof structure. Detailed Implementation

[0052] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0053] In the description of this invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "around", etc., which indicate orientation or positional relationship, are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this invention.

[0054] Please see Figure 1 and Figure 2 As shown, the present invention provides a technical solution: a small wind turbine erection device, including a hook a1 and a second hook (a corresponding clamp can be provided on the fan body or fan support column, or a corresponding strap can be used to tie it tightly, and then the hook a1 and the second hook are hung on the corresponding clamp or strap for lifting operation).

[0055] Combination Figure 1 and Figure 2As shown, it also includes a first winding wheel 17 and a second winding wheel 18 arranged side by side. A single lifting rope 10 is installed above the hook a1, and a second lifting rope is installed above the second hook. The first winding wheel 17 can wind up the second lifting rope, and the second winding wheel 18 can wind up the single lifting rope 10. Thus, when the single lifting rope 10 and the second lifting rope are wound up simultaneously, the hook a1 and the second hook can be pulled up simultaneously, so that the two can lift the fan body or the fan support column of the generator fan.

[0056] like Figure 3 In order to achieve the rotation of the first take-up reel 17 to achieve the take-up operation, a take-up motor 21 capable of providing take-up driving force is provided at one end of the first take-up reel 17. That is, the power output shaft of the take-up motor 21 is connected to the first take-up reel 17 to achieve the rotation of the first take-up reel 17.

[0057] Continue referring to 1. Figure 2 This device has a continuously variable transmission structure 19, which is used to drive and connect the first winding wheel 17 and the second winding wheel 18, so that the first winding wheel 17 and the second winding wheel 18 rotate synchronously, thereby realizing that the second lifting rope and the single lifting rope 10 are wound up at the same time, which satisfies the purpose of lifting the fan body or the fan support column. In addition, the continuously variable transmission structure 19 can realize the relative speed change between the first winding wheel 17 and the second winding wheel 18, so that the winding speed of the single lifting rope 10 and the second lifting rope does not change, thereby realizing that the height of the hook a1 and the second hook are different, thus satisfying the purpose of adjusting the angle of the fan and realizing the lifting of the fan at different angles during hoisting.

[0058] like Figure 3 Specifically, it includes a base 20 mounted on a crane, with a winding cylinder 30 fixed at the central shaft of the first winding reel 17 and the second winding reel 18. The winding cylinder 30 is mounted on the base 20 via a bearing seat b16, and the winding cylinder 30 and the bearing seat b16 are connected by a bearing. The bearing seat b16 is locked to the base 20 by bolts.

[0059] Combination Figure 3 - Figure 7The continuously variable transmission structure 19 includes two sets of pulleys located at one end of the first winding pulley 17 and the second winding pulley 18. Each set of pulleys includes a conical pulley 193 with opposite tips. That is, the pulley formed by two opposite conical pulleys 193 in a single set is an hourglass-shaped structure. A connecting rod 194 is slidably connected between the two opposite conical pulleys 193, so that the distance between the two opposite conical pulleys 193 can be adjusted. A variable speed steel belt 192 is connected between the two sets of conical pulleys 193. When the distance between the two opposite conical pulleys 193 changes, the variable speed steel belt 192 corresponds to different positions of the conical pulleys 193, so that the variable speed steel belt 192 drives the conical pulleys 193 to rotate at different speeds, so as to satisfy the non-uniform speed winding of the first winding pulley 17 and the second winding pulley 18 and the second suspension rope 10.

[0060] Figure 7 The state shown is the first embodiment of the continuously variable transmission structure 19. The position of the variable speed steel belt 192 on the two sets of pulleys is equal, that is, the arc diameter of the variable speed steel belt 192 bent on the two sets of pulleys is equal, so that the two sets of pulleys can operate at the same speed. At this time, the first winding wheel 17 and the second winding wheel 18 rotate at the same speed, so the winding speed of the single lifting rope 10 and the second lifting rope is equal, and the lifting height of the hook a1 and the second hook is equal, so as to achieve stable lifting of the generator fan body and the generator fan support column.

[0061] Figure 5 and Figure 6 The state shown represents the second embodiment of the continuously variable transmission (CVT) structure 19, where the distance between the two conical pulleys 193 on the pulley corresponding to the second take-up pulley 18 is reduced, and the distance between the two conical pulleys 193 on the pulley corresponding to the first take-up pulley 17 is increased. This results in an increase in the diameter of the transmission belt 192 on the conical pulleys 193 with reduced distance, and a decrease in the diameter of the transmission belt 192 on the conical pulleys 193 with increased distance. This causes a change in the relative speed between the first take-up pulley 17 and the second take-up pulley 18. The rotational speed at this point should be the distance between the conical pulleys 193 with increased distance (the distance between the pulleys corresponding to the first take-up pulley 17 and the second take-up pulley 18). The rotational speed of the tapered wheel 193 (the pulley corresponding to the second winding wheel 18) decreases as the distance decreases, thereby increasing the winding speed of the first winding wheel 17 on the second lifting rope and decreasing the winding speed of the second winding wheel 18 on the single lifting rope 10. As a result, based on the lifted generator fan, the side lifted by the single lifting rope 10 tilts downward, while the side lifted by the second lifting rope continues to rise until the generator fan is perpendicular to the ground (at this time, because the second lifting rope continues to rise, and the rising speed of the single lifting rope 10 is less than the rising speed of the second lifting rope, the single lifting rope 10 is in a relaxed state, that is, the entire generator fan moves upward by relying on the second lifting rope).

[0062] Reference Figure 4 , Figure 5 and Figure 8As shown, a restricted wheel 191 is fixed on the other side of the conical wheel 193. A drive structure 23 that can drive the restricted wheel 191 to move axially is installed on the upper surface of the base 20. Thus, the drive structure 23 can push and pull the restricted wheel 191, so that the restricted wheel 191 can drive the conical wheel 193 to move.

[0063] Combination Figure 4 , Figure 7 and Figure 8 As shown, specifically, a groove ring 1911 for the drive structure 23 to push and pull is provided in the circumferential center of the restricted wheel 191. In this embodiment, the drive structure 23 preferably includes a push ring 235 that is inserted into the groove ring 1911 and a nut 232 that is fixed below the push ring 235 to form an integral structure. A bidirectional screw 234 is provided on the upper surface of the base 20 at a position corresponding to the nut 232 along the pulley axis, which can drive the nuts 232 in the same group to move relative to or towards each other. Here, the bidirectional screw 234 drives the nut 232 to move, thereby pushing the ring 235 to push and pull the restricted wheel 191, so that the restricted wheel 191 drives the conical wheel 193 to move. Since the restricted wheel 191 needs to rotate together with the conical wheel 193, it is necessary to reduce the wear between the restricted wheel 191 and the push ring 235. Preferably, a roller bearing is provided at the bottom of the arc-shaped groove of the groove ring 1911, and a thrust bearing is installed on the groove wall of the arc-shaped groove.

[0064] In this embodiment, to achieve the goal of increasing the distance between the two conical wheels 193 on one pulley and decreasing the distance between the two conical wheels 193 on the other pulley, the threads on both sides of the single bidirectional lead screw 234 are opposite, and the two nuts 232 on the same bidirectional lead screw 234 are located on the threads on both sides respectively, so that the two nuts 232 in the same group move in opposite directions. In addition, the two threads of the two sets of bidirectional lead screws 234 should also be opposite in horizontal direction, so as to achieve the goal of opposite movement directions on the conical wheels 193 on the two pulleys. Preferably, a limit ring 233 is fixed in the middle of the bidirectional lead screw 234 to limit the movement of the nut 232 towards the center of the bidirectional lead screw 234 and prevent it from moving excessively.

[0065] Reference Figure 2 and Figure 8As shown, specifically, a bearing housing c237 for supporting the bidirectional lead screw 234 is fixed on the upper surface of the base 20 (preferably, a roller bearing is used to rotatably connect the bidirectional lead screw 234 and the bearing housing c237). The bearing housing c237 is preferably bolted and positioned on the base 20. A guide shaft 236 for guiding the nuts 232 is provided between the two bearing housings c237, that is, the guide shaft 236 passes through each corresponding nut 232 (and does not pass through the limiting ring 233). A driveable... An AC servo motor 231 drives any one of the bidirectional lead screws 234 to rotate. A transmission assembly 238 is connected between the other ends of the two bidirectional lead screws 234. That is, when the AC servo motor 231 is working, it can drive any one of the bidirectional lead screws 234 to rotate, and the two bidirectional lead screws 234 can rotate together through the action of the transmission assembly 238. In this embodiment, the transmission assembly 238 can be a belt drive or a chain drive. That is, the transmission wheel is installed at one end of the bidirectional lead screw 234, and a transmission belt (chain) is provided between the two transmission wheels.

[0066] Combination Figure 3 , Figure 4 , Figure 5 and Figure 9 As shown, in order to ensure that the conical wheel 193, which generates displacement in the above structure, does not affect the rotation of the first take-up wheel 17 and the second take-up wheel 18, specifically, in this embodiment, a sliding rod 22 is fixed at one end of the pulley near the take-up wheel. The sliding rod 22 is inserted into the inside of the take-up cylinder 30, thereby driving the take-up cylinder 30 to rotate (preferably, the sliding rod 22 adopts a hexagonal prism structure, and the inside of the take-up cylinder 30 is provided with a hexagonal blind hole that cooperates with the hexagonal prism, so that the two can rotate together).

[0067] In this embodiment, a buffer spring c24 is preferably provided between the sliding rod 22 and the winding drum 30 to cooperate with the movement of the restricted wheel 191. When the conical wheel 193 pushes the sliding rod 22, the sliding rod 22 compresses the buffer spring c24. Conversely, when the conical wheel 193 pulls the sliding rod 22, the buffer spring c24 rebounds. When the sliding rod 22 drives the winding drum 30 to rotate, the buffer spring c24 can play a buffering role and reduce the oscillation between the two.

[0068] Combination Figure 1 , Figure 2 and Figure 10As shown, specifically, it also includes a cantilever base 11 fixed to the top of the crane telescopic boom and capable of moving with the boom; the upper surface of the cantilever base 11 is provided with a converging guide wheel 71 and a single rope guide wheel 72 for guiding purposes. The converging guide wheel 71 is fixed to the top surface of the cantilever base 11 through a bearing seat a12 (the bearing seat a12 is preferably locked and positioned on the cantilever base 11 by bolts). The single rope guide wheel 72 can be used to guide the single lifting rope 10. After being guided by the single rope guide wheel 72, the single lifting rope 10 is wound by the second winding wheel 18. After being guided by the converging guide wheel 71, the second lifting rope is wound by the first winding wheel 17, thus satisfying the guidance of the lifting rope on the boom.

[0069] Combination Figure 10 Specifically, the single rope guide wheel 72 is elastically supported on the top surface of the cantilever base 11 by the force spring 721. That is, when the single rope 10 is wound by the second winding wheel 18, the single rope guide wheel 72 is pressed downward by the pressure of the single rope 10, so the force spring 721 is in a compressed state. When the single rope 10 is relaxed (because when the angle of the generator fan is adjusted to the vertical angle of the bottom surface, the second rope continues to rise, and the rising speed of the single rope 10 is less than the rising speed of the second rope, so the single rope 10 is in a relaxed state, that is, the entire generator fan moves upward by relying on the second rope), the single rope guide wheel 72 is no longer under force, and the force spring 721 rebounds at this time.

[0070] In this embodiment, a column 722 is provided below the single rope guide wheel 72 to guide the force spring 721. A pressure sensor 724 is installed inside the cantilever base 11 at a position perpendicular to the column 722. A pressure plate 723 that can cooperate with the pressure sensor 724 is fixed at the bottom end of the column 722. When the single rope 10 is wound by the second winding wheel 18, the single rope guide wheel 72 is pressed downward by the pressure of the single rope 10, and the force spring 721 is in a compressed state. The pressure plate 723 can press the pressure sensor 724 downward, and the pressure sensor 724 is under force. When the single rope 10 is in a relaxed state, the force spring 721 rebounds and can lift the pressure plate 723 upward, so that the pressure sensor 724 is no longer under force.

[0071] like Figure 2 , Figure 10 and Figure 15As shown, in this embodiment, the detection signal of the pressure sensor 724 should also be transmitted to the controller 26. The controller 26 controls the AC servo motor 231. That is, when the pressure sensor 724 is no longer under force, that is, when the single suspension rope 10 is in a relaxed state, the pressure sensor 724 transmits the signal to the controller 26. The controller 26 controls the AC servo motor 231 to work, so that it controls the drive structure 23 to drive the continuously variable transmission structure 19 to restore the original state (restore the state in which the radius of the variable steel belt 192 on the two pulleys is equal). At this time, the rotation speed of the first winding wheel 17 and the second winding wheel 18 is restored to the same speed, so that the winding speed of the single suspension rope 10 and the second suspension rope is consistent, so that when the generator fan is perpendicular to the bottom surface, the single suspension rope 10 and the second suspension rope exert force simultaneously to lift the generator fan upward.

[0072] like Figure 15 In this embodiment, a manual adjustment knob 27 should also be included. The manual adjustment knob 27 manually controls the AC servo motor 231 to meet the change in the rotation speed of the two pulleys during the lifting process, thereby realizing the change in the winding speed of the single lifting rope 10 and the second lifting rope, and realizing the required lifting and installation angle of the generator fan, which is the angle at which the generator fan can be manually controlled by this device.

[0073] Combination Figure 3 Specifically, in order to increase the distance between the single lifting rope 10 and the second lifting rope during winding and to avoid them from becoming misaligned or rubbing against each other during winding, a winding guide wheel 13 is provided above the first winding wheel 17. That is, before the second lifting rope is wound, it can be guided by the winding guide wheel 13 to increase the distance between the two lifting ropes. Preferably, the winding guide wheel 13 is installed between two bearing seats b16 via a long shaft, and both ends of the long shaft are fitted with guide wheel buffer springs 15. When the second lifting rope passes through the guide wheel buffer springs 15, it can be guided, and the guide wheel buffer springs 15 can buffer the winding guide wheel 13 to reduce wear between the second lifting rope and the winding guide wheel 13.

[0074] Reference Figure 1 , Figure 2 and Figure 11As shown, specifically, in order to meet the lifting requirements of the three blades of the generator fan (because three-point lifting is more stable), a second hook is provided, including hook b2 and hook c3, i.e., hook a (a foolproof structure 31 is installed on hook a1 to facilitate knowing the position of the hook required for the blade that needs to be tilted downwards), hook b2 and hook c3 form a three-point lifting of the three blades of the generator fan to meet the purpose of stable lifting; the second lifting rope here includes hook rope b5 connected to hook b2, hook rope c4 connected to hook c3, a convergence positioning block 25 for converging and locking the upper ends of hook rope c4 and hook rope b5, and a convergence lifting rope 8 connected to the upper end of convergence positioning block 25. The upper end of convergence lifting rope 8 is wound up by the first winding wheel 17, i.e., hook rope b5 and hook rope c4 are merged into one through convergence positioning block 25. When the convergence lifting rope 8 is wound up, it can lift hook rope b5 and hook rope c4 upwards.

[0075] like Figure 11 , Figure 12 and Figure 13 As shown, in order to position the single lifting rope 10 at the same height as the converging positioning block 25 so that the three ropes of the three hooks can form a stable triangular pyramid structure (the triangular pyramid structure can be more stable during the horizontal lifting stage), a guide rod 6 is installed below one side of the converging positioning block 25. A single positioning block 9 is fixed on the single lifting rope 10 at a position flush with the converging positioning block 25. The single positioning block 9 includes a positioning block body 91 locked on the single lifting rope 10, a card seat 92 integrally formed on the outside of the positioning block body 91, and a slider 93 installed between the two card seats 92. The slider 93 can slide on the guide rod 6.

[0076] In this embodiment, the guide rod 6 can connect the single positioning block 9 and the converging positioning block 25 into one unit. When the angle of the generator fan is adjusted, since the moving speeds of the single suspension rope 10 and the converging suspension rope 8 are different, the slider 93 on the single positioning block 9 can move up and down along the guide rod 6 to satisfy the relative motion of the two.

[0077] Combination Figure 3 , Figure 14 and Figure 16As shown, specifically, the winding motor 21 is mounted on the base 20 below by a motor buffer spring 14. When the winding motor 21 is working, it will generate a large vibration. This vibration can be isolated by the motor buffer spring 14 to prevent the vibration from being transmitted to the winding mechanical receiver and affecting the lifting stability. Furthermore, the winding motor 21 itself increases its swing amplitude due to the action of the motor buffer spring 14. A guide arm 141 is provided on the motor buffer base 20 to guide the motor buffer spring 14, so that the swing direction of the winding motor 21 is up and down. At this time, a fan plate 28 is provided on the top surface of the winding motor 21, and the fan plate 28 can also swing. Its swing can dissipate heat for the winding wheel. The fan plate 28 is connected to the winding motor 21 by a V-shaped elastic plate 29. The V-shaped elastic plate 29 can further increase the swing amplitude of the fan plate 28 and increase the heat dissipation effect.

[0078] During use (operation), the initial step is to hoist the generator fan support column, load the necessary clamps onto the support column, and then... Figure 1 In the state shown, hooks a1, b2 and c3 are hung on the clamps, and hooks a1, b2 and c3 are lifted using a reel. After the support columns are lifted and stacked,

[0079] The main body of the generator fan is lifted. The specific lifting process is as follows:

[0080] 1) Lifting Stage: Secure the binding straps or other suitable attachments to the end of the fan blades closest to the center of the fan using hooks a1, b2, and c3, hooking them onto the corresponding binding straps on the fan blades. This creates a three-point lifting configuration. Figure 1 In the state shown (the two pulleys of the continuously variable transmission structure 19 rotate at the same speed), the winding motor 21 drives the first winding wheel 17 and the second winding wheel 18 to rotate at the same speed through the continuously variable transmission structure 19, so that the hooks a1, b2 and c3 always move at the same height to lift the generator fan in a horizontal state.

[0081] 2) Angle Adjustment Stage: After the hoisting guide reaches a certain height (allowing the generator fan to have a certain tilt angle), the rotational speed of the first winding wheel 17 and the second winding wheel 18 is adjusted through the continuously variable transmission structure 19 (when the AC servo motor 231 is working, it can drive any one of the bidirectional lead screws 234 to rotate, and through the action of the transmission component 238, the two bidirectional lead screws 234 rotate together. When they rotate, the nuts 232 on the same bidirectional lead screw 234 can move closer to each other, while the nuts 232 on the other bidirectional lead screw 234 can move further apart, thereby adjusting the distance between the two opposing conical wheels 193), so that the second winding... The distance between the two conical pulleys 193 on the pulley corresponding to wheel 18 decreases, while the distance between the two conical pulleys 193 on the pulley corresponding to the first take-up pulley 17 increases. This causes the diameter of the variable speed belt 192 on the conical pulleys 193 with the reduced distance to increase, and the diameter of the variable speed belt 192 on the conical pulleys 193 with the increased distance to decrease. This results in a change in the relative speed between the first take-up pulley 17 and the second take-up pulley 18. At this point, the rotational speed should be such that the rotational speed of the conical pulley 193 with the increased distance (the pulley corresponding to the first take-up pulley 17) is greater than the rotational speed of the conical pulley 193 with the reduced distance (the pulley corresponding to the second take-up pulley 18). The rotational speed of the pulley decreases, thus the winding speed of the first winding pulley 17 on the converging suspension rope 8 increases, while the winding speed of the second winding pulley 18 on the single suspension rope 10 decreases. Therefore, for the lifted generator fan, the side lifted by the single suspension rope 10 tilts downwards, while the side lifted by the second suspension rope continues to rise until the generator fan is perpendicular to the ground. At this point, because the converging suspension rope 8 continues to rise, and the rising speed of the single suspension rope 10 is less than that of the second suspension rope, the single suspension rope 10 is in a relaxed state. That is, at this moment, the entire generator fan moves upwards relying on the converging suspension rope 8. At this moment, because the single suspension rope 10 is in a relaxed state, the pressure... When the sensor 724 is no longer under force, the pressure sensor 724 transmits the signal of no longer being under force to the controller 26. The controller 26 controls the AC servo motor 231 to work, so that it controls the drive structure 23 to drive the continuously variable transmission structure 19 to restore its original state (restore the state in which the radius of the variable speed steel belt 192 on the two pulleys is equal). At this time, the rotation speed of the first winding pulley 17 and the second winding pulley 18 returns to the same speed, so that the winding speed of the single lifting rope 10 and the converging lifting rope 8 are consistent. This allows the single lifting rope 10 and the converging lifting rope 8 to exert force simultaneously to lift the generator fan upwards when the generator fan is perpendicular to the bottom surface, until it is lifted to the part that needs to be connected.

[0082] The device should also include a manual adjustment knob 27, which manually controls the AC servo motor 231 to meet the rotation speed changes of the two pulleys during the lifting process, thereby realizing the winding speed changes of the single lifting rope 10 and the combined lifting rope 8, and realizing the required lifting and installation angle of the generator fan, that is, the angle at which the generator fan can be manually controlled by the device.

[0083] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0084] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A small wind turbine erection device, comprising a hook a (1) and a second hook, characterized in that: Also includes: A single lifting rope (10) installed above hook a (1) and a second lifting rope installed above the second hook; A second winding wheel (18) and a first winding wheel (17) are arranged side by side for winding the single lifting rope (10) and the second lifting rope, respectively. One end of the first winding wheel (17) is provided with a winding motor (21) that can provide winding driving force. A continuously variable transmission structure (19) is used to drive the first winding wheel (17) and the second winding wheel (18), and the continuously variable transmission structure (19) can realize the relative speed change between the first winding wheel (17) and the second winding wheel (18) to adjust the angle of the generator fan. It also includes a cantilever base (11) fixed to the top of the telescopic boom of the crane. The upper surface of the cantilever base (11) is provided with a converging guide wheel (71) and a single rope guide wheel (72). The single rope guide wheel (72) is elastically supported on the top surface of the cantilever base (11) by a force spring (721). Below the single rope guide wheel (72), there is a column (722) for the force spring (721) to guide. A pressure sensor (724) is installed in the interior of the cantilever base (11) at a position perpendicular to the column (722). The bottom end of the column (722) is fixed with a pressure plate (723) that can cooperate with the pressure sensor (724). The second hoisting rope includes a converging positioning block (25), and a guide rod (6) is installed on one side of the converging positioning block (25); A single positioning block (9) is fixed on the single suspension rope (10) at a position flush with the converging positioning block (25). The single positioning block (9) includes a positioning block body (91) locked on the single suspension rope (10), a card seat (92) integrally formed on the outside of the positioning block body (91), and a slider (93) installed between the two card seats (92). The slider (93) can slide on the guide rod (6).

2. The small wind turbine erection device according to claim 1, characterized in that: The base (20) is fixed on the crane, and the first winding wheel (17) and the second winding wheel (18) are both mounted on the base (20) through the bearing seat b (16); The continuously variable transmission structure (19) includes two sets of pulleys located at one end of the first winding wheel (17) and the second winding wheel (18). Each set of pulleys includes a conical wheel (193) with opposite tips. A connecting rod (194) is slidably connected between the two opposing conical wheels (193). A speed-changing steel belt (192) is connected between the two sets of conical wheels (193). A restricted wheel (191) is fixed on the other side of the conical wheel (193). A drive structure (23) is installed on the upper surface of the base (20) to drive the restricted wheel (191) to move axially.

3. The small wind turbine erection device according to claim 2, characterized in that: The restricted wheel (191) has a groove (1911) in the center of its circumference. The drive structure (23) includes a push ring (235) that is inserted into the groove ring (1911) and a nut (232) that is fixed below the push ring (235) to form an integral structure. The upper surface of the base (20) is provided with a bidirectional lead screw (234) along the pulley axis at the position corresponding to the nut (232) to drive the nuts (232) in the same group to move relative to or towards each other. A limit ring (233) is fixed in the middle of the bidirectional lead screw (234).

4. The small wind turbine erection device according to claim 3, characterized in that: The upper surface of the base (20) is fixed with a bearing seat c (237) for supporting the bidirectional lead screw (234). A guide shaft (236) for guiding the nut (232) is provided between the two bearing seats c (237). An AC servo motor (231) capable of driving any bidirectional lead screw (234) to rotate is installed above the base (20). A transmission assembly (238) is connected between the other ends of the two bidirectional lead screws (234).

5. A small wind turbine erection device according to claim 3, characterized in that: A sliding rod (22) is fixed to one end of the pulley near the first winding wheel (17) and the second winding wheel (18); A take-up cylinder (30) is fixed at the central axis of the first take-up reel (17) and the second take-up reel (18). The sliding rod (22) is inserted into the inside of the take-up cylinder (30), and the sliding rod (22) drives the take-up cylinder (30) to rotate. A buffer spring c (24) is provided between the sliding rod (22) and the take-up cylinder (30) to cooperate with the movement of the restricted wheel (191).

6. The small wind turbine erection device according to claim 1, characterized in that: The converging guide wheel (71) is fixed to the top surface of the cantilever base (11) via the bearing seat a (12). The single suspension rope (10) is guided by the single rope guide wheel (72) and then wound by the second winding wheel (18). The second suspension rope is guided by the converging guide wheel (71) and then wound by the first winding wheel (17).

7. A small wind turbine erection device according to claim 4, characterized in that: The controller (26) transmits the detection signal from the pressure sensor (724) to the controller (26), and the controller (26) controls the AC servo motor (231). A manual adjustment knob (27) is used to manually control an AC servo motor (231) to manually control the angle at which the generator fan is lifted.

8. A small wind turbine erection device according to claim 1, characterized in that: The second hook includes hook b (2) and hook c (3); The second hoisting rope includes a hook rope b (5) connected to the hook b (2), a hook rope c (4) connected to the hook c (3), a convergence positioning block (25) for converging and locking the upper ends of the hook rope c (4) and the hook rope b (5), and a convergence hoisting rope (8) connected to the upper end of the convergence positioning block (25), the upper end of which is wound by a first winding wheel (17).

9. A small wind turbine erection device according to claim 8, characterized in that: The winding motor (21) is mounted on the base (20) below by a motor buffer spring (14). The base (20) is provided with a guide arm (141) guided by the motor buffer spring (14). The top surface of the winding cylinder (30) is provided with a fan plate (28). The fan plate (28) is connected to the winding motor (21) by a V-shaped elastic plate (29).

10. A small wind turbine erection device according to claim 1, characterized in that: A winding guide wheel (13) is provided above the first winding wheel (17). The winding guide wheel (13) is installed between two bearing seats b (16) via a long shaft, and both ends of the long shaft are fitted with guide wheel buffer springs (15).

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