Wind turbine main shaft jacking equipment and its usage method

Abstract

The present invention relates to the technical field of jacking equipment, and discloses a wind turbine main shaft jacking equipment and its usage method, including a supporting component arranged on a wind turbine component. A sealing plate component, a lifting component and a lifting component are arranged on the supporting component. Clamping components are symmetrically arranged on the lifting component, and a detection component is arranged on the clamping component. A main shaft body is placed between the clamping components. A traction column is arranged on the wind turbine component, and an annular track is arranged on the supporting component. In the present invention, the main shaft body is lifted and lowered in the vertical direction by arranging the supporting component and the lifting component, ensuring the stability of the main shaft body during the process from the top of the wind turbine component to the ground; different-sized main shaft bodies are adaptively clamped and fixed by arranging the clamping components; whether the main shaft body moves in place longitudinally and transversely is detected and judged by arranging the detection component.

Description

Technical Field

[0001] The present invention relates to the technical field of jacking equipment, and particularly to a jacking equipment for a wind turbine main shaft and its usage method. Background Art

[0002] A wind turbine is an efficient and environmentally friendly energy conversion device with a simple working principle, diverse classifications, wide applications and great significance. With the continuous progress of technology and the gradual reduction of costs, wind power generation will play a more important role in future energy supply. The main shaft of a wind turbine, as a key component in a wind turbine generator set, bears huge loads and complex working environments. During the transportation of the wind turbine generator set, the transportation device of the main shaft needs to ensure the stability and safety of the main shaft during transportation, and prevent damage caused by factors such as vibration and impact.

[0003] Chinese invention patent with application number 201010618838.9 proposes a hydraulic climbing self-hoisting device for a large wind turbine, including a climbing auxiliary platform, an installation platform, and a hoisting platform arranged in sequence from bottom to top. A hydraulic climbing device for lifting the climbing auxiliary platform is provided between the climbing auxiliary platform and the installation platform, and a hydraulic jacking device for jacking the hoisting platform is provided between the installation platform and the hoisting platform. Tower rack through holes for the tower rack to pass through are provided on the climbing auxiliary platform and the installation platform, and a hoisting through hole for the tower rack to be installed to pass through is provided on the hoisting platform. Hydraulic clamping devices for clamping or loosening the tower rack are provided on the climbing auxiliary platform, the installation platform, and the hoisting platform, and a hydraulic pushing device for moving the tower rack to be installed to the corresponding installation position above the tower rack is further provided on the hoisting platform. The hoisting device of the present invention can effectively overcome the adverse effects caused by the too high installation height of the wind turbine tower rack.

[0004] However, in this prior art, when the main shaft needs to be replaced, it is lifted by a crane. If there is a sudden gust of wind, the main shaft will shake and collide with the tower barrel, resulting in paint peeling off the surface of the tower barrel, thereby accelerating the corrosion of the tower barrel; since the main shaft has different sizes, an elastic clamping structure needs to be set to adaptively clamp the main shaft to ensure the stability of the main shaft during jacking; in addition, during the jacking process of the main shaft, it is impossible to determine whether the main shaft has reached the lifting position in the vertical direction and whether it has moved to the position in the horizontal direction, thus affecting the subsequent installation process of the main shaft.

[0005] Therefore, it is necessary to solve the above problems through a jacking equipment for a wind turbine main shaft. Summary of the Invention

[0006] The purpose of the present invention is to provide a jacking equipment for a wind turbine main shaft and its usage method to solve the problems raised in the above background art.

[0007] To achieve the above object, the present invention provides the following technical solutions: a wind turbine main shaft jacking device, including a supporting component arranged on a wind turbine assembly, a sealing plate component, a lifting component and a lifting component are arranged on the supporting component, clamping components are symmetrically arranged on the lifting component, a detection component is arranged on the clamping component, a main shaft body is placed between the clamping components, a traction column is arranged on the wind turbine assembly, and an annular track is arranged on the supporting component;

[0008] The clamping component includes a clamping part, the clamping part includes a clamping plate, a movable column is arranged on the clamping plate, a clamping spring is arranged outside the movable column, and an abutting block is arranged at the end of the movable column;

[0009] The detection component includes a lifting column, the lifting column is movably arranged on the clamping plate, a ball is arranged at the top of the lifting column, and a detection spring is arranged outside the lifting column.

[0010] Preferably, the clamping component further includes a supporting vertical plate, at least two clamping parts are arranged on the supporting vertical plate, a longitudinal telescopic cylinder is arranged on the supporting vertical plate, the output end of the longitudinal telescopic cylinder is fixedly provided with a clamping part, detection components are uniformly arranged on the clamping part, a transverse telescopic cylinder is connected to the side of the supporting vertical plate, a fixed circular plate is arranged at the end of the transverse telescopic cylinder, a rotating motor is arranged on the fixed circular plate, the output end of the rotating motor penetrates through the fixed circular plate and is fixedly connected to the transverse telescopic cylinder, and a lifting telescopic cylinder is fixedly connected to the bottom of the fixed circular plate.

[0011] Preferably, the lifting telescopic cylinder is fixedly connected to the lifting component through a right-angle plate, a vertical plate is fixedly arranged outside the transverse telescopic cylinder, a fixed transverse plate and a movable transverse plate are arranged at one end of the vertical plate away from the transverse telescopic cylinder, a push plate telescopic cylinder is arranged between the fixed transverse plate and the movable transverse plate, and a positioning column is fixedly arranged at the center of the movable transverse plate.

[0012] Preferably, the lifting component includes a lifting push plate and a transport plate, a folding arm and a lifting hydraulic cylinder are arranged between the lifting push plate and the transport plate, the lifting hydraulic cylinder is arranged between the folding arms, a support beam is arranged in parallel at the bottom of the transport plate, a plurality of wheels are arranged in the support beam, a driving motor is arranged on any one of the wheels, a plurality of guide wheels are arranged on one side of the transport plate, a groove is formed in the guide wheel along the radial direction, and the annular track is fitted with the groove.

[0013] Preferably, the sealing plate assembly includes an inner track and an outer track. An inner roller is movably arranged in the inner track. One side of the inner roller is fixedly connected to a translation motor, and the other side is rotatably connected to an arc-shaped plate. Hanging rail wheels are evenly arranged on the arc-shaped plate. A supplementary plate is arranged on the arc-shaped plate. Rotating screws are evenly arranged on the bottom surface of the supplementary plate. One end of the rotating screw away from the supplementary plate is connected to a lifting motor.

[0014] Preferably, the lifting assembly includes a hanging ring. A hook is movably arranged on the hanging ring. A steel wire rope is fixedly arranged on the hook. A fixed pulley is fixedly arranged on the wind turbine generator assembly. One end of the steel wire rope bypasses the fixed pulley and is connected to a winch. The fixed pulley is fixedly installed on the wind turbine generator assembly through a steel frame. A rain shield is arranged between the steel frame and the wind turbine generator assembly.

[0015] Preferably, the wind turbine generator assembly includes a tower barrel. Traction columns are symmetrically arranged on the outer side surface of the tower barrel. A nacelle box is arranged at the top of the tower barrel. A rotating blade is rotatably arranged at one end of the nacelle box. A bearing seat is arranged in the nacelle box. The main shaft body is installed in the bearing seat. A wind vane and an anemometer are arranged on the nacelle box;

[0016] A turntable is arranged at the bottom of the tower barrel. A support cross column is arranged on one side of the traction column close to the tower barrel. A circular ring is arranged on the support cross column. The circular ring is rotatably connected to the tower barrel. An auxiliary wheel is arranged on one side of the circular ring in contact with the tower barrel.

[0017] Preferably, the supporting assembly includes a load-bearing plate. A guardrail and a fan-shaped opening are arranged on the load-bearing plate. A movable door is arranged on the guardrail. A circular hole is arranged in the middle of the load-bearing plate. The tower barrel is arranged in the circular hole and does not contact the inner side of the circular hole. Notches are symmetrically formed at the edge of the circular hole. The traction column is arranged in the notches.

[0018] A using method of a wind turbine generator main shaft jacking device includes the following steps:

[0019] Step 1: Lift the main shaft body and place it on the clamping assembly. Control the sealing plate assembly to close the fan-shaped opening and lock the movable door;

[0020] Step 2: Control the lifting assembly to lift the supporting assembly to the top of the wind turbine generator assembly, and judge whether it is lifted in place in the vertical direction through the detection assembly;

[0021] Step 3: After lifting in place, control the lifting assembly to drive the clamping assembly to move along the annular track to the central position of the sealing plate assembly, and judge whether it is moved in place in the horizontal direction through the detection assembly;

[0022] Step 4: Control the lifting assembly to drive the clamping assembly to rise, control the clamping assembly to drive the main shaft body to rise and rotate, align it with the bearing seat, and push the main shaft body into the bearing seat through the clamping assembly to complete the lifting and installation of the main shaft body.

[0023] Technical effects and advantages of the present invention:

[0024] 1. In the present invention, the supporting assembly and the lifting assembly are provided to lift the main shaft body vertically, ensuring the stability of the main shaft body during the process from the top of the wind turbine component to the ground; the clamping assembly is provided to adaptively clamp and fix the main shaft body of different sizes, and cooperate with the lifting assembly to lift the main shaft body to the installation position; the detection assembly is provided to detect and judge whether the main shaft body moves in place longitudinally and transversely.

[0025] 2. In the present invention, by providing multiple clamping parts to segmentally clamp the main shaft body, it is prevented that the main shaft body slips during the lifting process with the supporting assembly and collides with the tower barrel, resulting in paint peeling and thus accelerating corrosion; while clamping, the diameter of the currently clamped main shaft body is calculated through the compression amount of the clamping spring, and then compared with the control group data in the database to match the main shaft body of the corresponding size specification, so as to adjust the distance between the clamping parts to better stabilize the main shaft body.

[0026] 3. In the present invention, by providing a detection spring, it is judged whether the main shaft body is lifted in place in the vertical direction, and the lifting assembly is controlled to stop lifting in time to stabilize the height positions of the supporting assembly and the main shaft body; it can also judge whether the main shaft body moves in place in the horizontal direction, and control the lifting assembly to drive the main shaft body to stop moving in time to ensure that the main shaft body is lifted and moved in place.

[0027] 4. In the present invention, by controlling the output end of the longitudinal telescopic cylinder to reciprocally expand and contract, driving the clamping part to reciprocally move, the main shaft body is thus pulled out from the inside of the bearing seat and stabilized on the lifting assembly, ensuring the stability of the main shaft body during the extraction process; by detecting the difference in the compression amounts of the detection springs on the two clamping parts, it is judged whether the end face of the current main shaft body is parallel to the end face of the bearing seat, so as to ensure that the main shaft body can smoothly enter the bearing seat subsequently, and avoid wear between the surface of the main shaft body and the bearing seat due to angle deviation. Description of the drawings

[0028] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 is Figure 1 an enlarged schematic diagram of part A structure in

[0030] Figure 3Schematic diagram of the positions of the lifting component, clamping component, main shaft body and detection component of the present invention;

[0031] Figure 4 Schematic diagram of the structure of the clamping component of the present invention;

[0032] Figure 5 Schematic diagram of the structures of the clamping part and the detection component of the present invention;

[0033] Figure 6 Schematic diagram of the structure of the lifting component of the present invention;

[0034] Figure 7 Schematic diagram of the structures of the supporting component and the lifting component of the present invention;

[0035] Figure 8 Exploded structure schematic diagram of the sealing plate component of the present invention;

[0036] Figure 9 Another angle exploded structure schematic diagram of the sealing plate component of the present invention;

[0037] Figure 10 Schematic diagram of the structure of the wind turbine component of the present invention.

[0038] In the figure: 1, supporting component; 101, load-bearing plate; 102, guardrail; 103, movable door; 104, notch; 105, fan-shaped opening; 2, sealing plate component; 201, inner track; 202, outer track; 203, inner roller; 204, translation motor; 205, arc plate; 206, supplementary plate; 207, hanging rail wheel; 208, rotating screw; 209, lifting motor; 3, lifting component; 301, lifting push plate; 302, transport plate; 303, folding arm; 304, lifting hydraulic cylinder; 305, support beam; 306, wheel; 307, drive motor; 308, guide wheel; 4, clamping component; 401, clamping plate; 402, movable column; 403, clamping spring; 404, abutting block; 405, support vertical plate; 406, longitudinal telescopic cylinder; 407, transverse telescopic cylinder; 408, fixed circular plate; 409, rotating motor; 410, lifting telescopic cylinder; 411, right-angle plate; 412, vertical plate; 413, movable transverse plate; 414, fixed transverse plate; 415, push plate telescopic cylinder; 416, positioning column; 5, main shaft body; 6, lifting component; 601, hanging ring; 602, hook; 603, steel wire rope; 604, fixed pulley; 605, steel frame; 606, rain shield; 607, winch; 7, traction column; 8, wind turbine component; 801, tower barrel; 802, nacelle box; 803, rotating blade; 804, bearing seat; 805, wind vane; 806, anemometer; 9, detection component; 901, lifting column; 902, ball; 903, detection spring; 10, annular track; 11, support cross column; 12, ring; 13, turntable. Detailed implementation mode

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0040] In order to solve the problems in the prior art that when the main shaft is replaced, it will shake when lifted by a crane in case of sudden wind, resulting in unstable lifting process, the clamping structure cannot adaptively clamp main shafts of different sizes, resulting in unstable clamping process, and it is impossible to determine whether the main shaft is lifted and moved to the appropriate position, Embodiment 1 is proposed.

[0041] Embodiment 1:

[0042] As Figures 1 to 10 shown, the present invention provides a jacking device for the main shaft of a wind turbine, which includes a supporting component 1 arranged on the wind turbine component 8. A sealing plate component 2, a lifting component 6 and a lifting component 3 are arranged on the supporting component 1. Clamping components 4 are symmetrically arranged on the lifting component 3. A detection component 9 is arranged on the clamping components 4. A main shaft body 5 is placed between the clamping components 4. A traction column 7 is arranged on the wind turbine component 8. A circular track 10 is arranged on the supporting component 1.

[0043] By arranging the supporting component 1 and the lifting component 6 to lift the main shaft body 5 in the vertical direction, the stability of the main shaft body 5 during the process from the top of the wind turbine component 8 to the ground is ensured; by arranging the clamping components 4 to adaptively clamp and fix the main shaft body 5 of different sizes, and cooperating with the lifting component 3 to lift the main shaft body 5 to the installation position; by arranging the detection component 9 to detect and judge whether the main shaft body 5 moves in place longitudinally and transversely.

[0044] When the main shaft body 5 needs to be installed, the supporting component 1 drives the main shaft body 5 to rise along the tower barrel 801 through the lifting component 6. During the rising process, if there is a sudden wind, the main shaft body 5 will shake and collide with the tower barrel 801, resulting in paint peeling on the surface of the tower barrel 801, thereby aggravating the corrosion of the surface of the tower barrel 801.

[0045] In order to solve the above technical problems, as Figures 3 to 5As shown, in this embodiment, the spindle body 5 is segmented and clamped by arranging a plurality of clamping parts to ensure the stability of the spindle body 5. The clamping assembly 4 includes clamping parts. The clamping part includes a clamping plate 401. An active column 402 is arranged on the clamping plate 401. A through hole for accommodating the active column 402 is arranged on the clamping plate 401. The active column 402 slides in the through hole. A clamping spring 403 is arranged on the outer side of the active column 402. A pressing block 404 is arranged at the end of the active column 402; the clamping assembly 4 further includes a supporting vertical plate 405. At least two clamping parts are arranged on the supporting vertical plate 405. A longitudinal telescopic cylinder 406 is arranged on the supporting vertical plate 405. The longitudinal telescopic cylinder 406 drives the clamping part at its output end to lift to adapt to the spindle body 5 of different heights. The output end of the longitudinal telescopic cylinder 406 is fixedly provided with a clamping part. The clamping part located at the end of the longitudinal telescopic cylinder 406 is mainly used for clamping the end of the spindle body 5. A detection assembly 9 is evenly arranged on the clamping part. The detection assembly 9 is arranged on the top surface of the clamping part at the end of the longitudinal telescopic cylinder 406. A transverse telescopic cylinder 407 is connected to the side surface of the supporting vertical plate 405. The transverse telescopic cylinder 407 drives the clamping parts to approach each other to clamp the spindle body 5. A fixed circular plate 408 is arranged at the end of the transverse telescopic cylinder 407. A rotating motor 409 is arranged on the fixed circular plate 408. The rotating motor 409 drives the clamping part and the spindle body 5 to rotate through the supporting vertical plate 405. The output end of the rotating motor 409 penetrates through the fixed circular plate 408 and is fixedly connected to the transverse telescopic cylinder 407. The bottom of the fixed circular plate 408 is fixedly connected with a lifting telescopic cylinder 410; the lifting telescopic cylinder 410 is fixedly connected to the lifting assembly 3 through a right-angle plate 411. A vertical plate 412 is fixedly arranged on the outer side of the transverse telescopic cylinder 407. A fixed cross plate 414 and a movable cross plate 413 are arranged at one end of the vertical plate 412 away from the transverse telescopic cylinder 407. The movable cross plate 413 pushes the spindle body 5 when the spindle body 5 rotates to the horizontal state and is installed towards the bearing seat 804. A push plate telescopic cylinder 415 is arranged between the fixed cross plate 414 and the movable cross plate 413. A positioning column 416 is fixedly arranged at the center of the movable cross plate 413. The positioning column 416 is used to insert into the inside of the spindle body 5 to simply position it.

[0046] In this embodiment, the diameter and height data of the main shaft body 5 of each model are input into the database of the console for use as a control group. When it is necessary to lift the main shaft body 5 to the top of the tower barrel 801 and install it into the bearing seat 804, when at the bottom of the tower barrel 801, first clamp the main shaft body 5 and measure its dimensions. Lift the main shaft body 5 by a crane, place it on the movable cross plate 413 after aligning with the positioning column 416, and then control the output end of the horizontal telescopic cylinder 407 to extend. Drive the clamping parts to approach each other through the support vertical plate 405 to clamp the main shaft body 5. When the abutting block 404 abuts against the outer surface of the main shaft body 5, the abutting block 404 compresses the clamping spring 403, and the clamping spring 403 generates a compression amount. When the clamping springs 403 of all clamping parts generate compression amounts, it means that at this time, the main shaft body 5 has been clamped.

[0047] Before the output end of the horizontal telescopic cylinder 407 extends, the distance between the abutting blocks 404 in the middle of the two clamping parts on both sides is an initial fixed value. According to the amount of extension of the output ends of the two horizontal telescopic cylinders 407 on both sides and the compression amount of the clamping springs 403 in the middle of the two clamping parts on both sides, the diameter data of the current main shaft body 5 can be obtained. The specific steps are as follows: the diameter of the main shaft body 5 = the initial fixed value - the amount of extension of the output ends of the two horizontal telescopic cylinders 407 on both sides + the compression amount of the clamping springs 403 in the middle of the two clamping parts on both sides. Match the diameter of the main shaft body 5 with the control group in the database to obtain the height of the current main shaft body 5.

[0048] Before the output end of the vertical telescopic cylinder 406 extends, the distance between the top surface of the clamping part at its end and the top surface of the movable cross plate 413 is an initial fixed value. According to the height of the main shaft body 5 obtained by matching, calculate the difference value, and control the output end of the vertical telescopic cylinder 406 to extend this difference distance. At this time, the top surface of the clamping part at its end is flush with the top surface of the main shaft body 5, and the detection component 9 on the top surface of this clamping part protrudes from the top surface of the main shaft body 5.

[0049] When reaching the top of the tower barrel 801, then control the lifting component 3 to drive the clamping component 4 and the main shaft body 5 to move to the installation position. Control the lifting component 3 to rise to the highest position, and then control the output end of the lifting telescopic cylinder 410 to extend, driving the clamping part, the main shaft body 5, and the rotating motor 409 to rise until the height of the rotating motor 409 reaches a position flush with the center height of the bearing seat 804. Then, control the rotating motor 409 to drive the main shaft body 5 to rotate to a horizontal state. Control the output ends of the push plate telescopic cylinder 415 and the vertical telescopic cylinder 406 to extend synchronously until the detection spring 903 of the detection component 9 generates compression. Stop the extension of the output end of the vertical telescopic cylinder 406, and the output end of the push plate telescopic cylinder 415 continues to extend until it drives the movable cross plate 413 to move to the farthest distance, so as to push the main shaft body 5 into the bearing seat 804 through the movable cross plate 413 to complete the installation of the main shaft body 5.

[0050] By setting multiple clamping parts to clamp the main shaft body 5 in sections, it is possible to prevent the main shaft body 5 from slipping during the lifting and lowering process with the support component 1 and colliding with the tower barrel 801, resulting in paint peeling and thus accelerating corrosion. While clamping, the diameter of the currently clamped main shaft body 5 is calculated through the compression amount of the clamping spring 403, and then compared with the control group data in the database to match the main shaft body 5 with the corresponding size specification, so as to adjust the distance between the clamping parts to better stabilize the main shaft body 5.

[0051] When the main shaft body 5 has been lifted to the top of the tower barrel 801 by the cooperation of the support component 1 and the lifting component 6, the main shaft body 5 is not in the installation position and height corresponding to the bearing seat 804. It is necessary to drive the main shaft body 5 to move horizontally to ensure that the main shaft body 5 reaches the correct position and ensure the smooth progress of the installation process.

[0052] To solve the above technical problems, as Figure 6 shown in this embodiment, by setting the lifting component 3 to drive the main shaft body 5 to reach the corresponding position and height, the lifting component 3 includes a lifting push plate 301 and a transport plate 302. A folding arm 303 and a lifting hydraulic cylinder 304 are arranged between the lifting push plate 301 and the transport plate 302. The lifting hydraulic cylinder 304 is arranged between the folding arms 303. A support beam 305 is arranged in parallel at the bottom of the transport plate 302. A plurality of wheels 306 are arranged in the support beam 305. A driving motor 307 is arranged on any one of the wheels 306. A plurality of guide wheels 308 are arranged on one side of the transport plate 302. The guide wheels 308 are provided with grooves along the radial direction, and the annular track 10 is fitted with the grooves. Under the cooperation and limitation of the annular track 10 and the guide wheels 308, the whole lifting component 3 moves along the annular track 10 in an annular trajectory.

[0053] During use, control the driving motor 307 to rotate, drive the wheel 306 to drive the support beam 305 to move to the center position of the supplementary plate 206, and then control the output end of the lifting hydraulic cylinder 304 to extend to the maximum extension amount to raise the clamping component 4 to a position equivalent to the height of the bearing seat 804. By setting the lifting component 3 to cooperate with the detection component 9, drive the main shaft body 5 to move horizontally to a suitable position.

[0054] When the lifting component 6 drives the support component 1 and the main shaft body 5 to lift to the top of the tower barrel 801, it is impossible to determine whether the main shaft body 5 has been lifted to the appropriate position longitudinally. It is necessary to set a corresponding detection structure to identify and detect whether the lifting is in place.

[0055] To solve the above technical problems, as Figure 5 and Figure 7As shown, in this embodiment, identification detection is performed by setting up a detection component 9, and the detection component 9 includes a lifting column 901, and the lifting column 901 is movably set on the clamping plate 401, and the clamping plate 401 is provided with a through hole. The lifting column 901 is slidably set in the through hole, and can be lifted and lowered along the through hole with the support of the detection spring 903. A ball 902 is set on the top of the lifting column 901. When the ball 902 hits the rain shield 606 and needs to move in the horizontal direction, the ball 902 is set to roll, which can reduce the friction between the ball 902 and the rain shield 606, and a detection spring 903 is set on the outside of the lifting column 901.

[0056] In this embodiment, when the main shaft body 5 rises to the top of the tower 801, the current rise of the main shaft body 5 is determined by detecting the change in the compression of the spring 903. Specifically, when the detection spring 903 is compressed and a compression amount is generated, it means that the ball 902 has now pressed against the rain shield 606. The ball 902 causes the lifting column 901 to move downward along the through hole, thereby compressing the detection spring 903.

[0057] When the main shaft body 5 rises to the position, the operation of the lifting component 6 is stopped, the height of the supporting component 1 is stable and no longer rises, and the main shaft body 5 is driven by the lifting component 3 to move to the center position of the supplementary plate 206. Specifically, when the lifting component 3 drives the main shaft body 5 to move along the trajectory of the circular track 10, the detection spring 903 remains in a compressed state until it reaches the position of the opening on the rain shield 606. The angle of the opening position is fixed. Therefore, when the compression amount of the detection spring 903 on the clamping part located on the front side of the travel direction disappears, the compression amount of the detection spring 903 located on the rear side of the travel direction does not disappear, which means that the center position of the main shaft body 5 has reached one side of the opening. At this time, the lifting component 3 is controlled to drive the main shaft body 5 to continue to move half of the angle of the opening position and then stop. At this time, the main shaft body 5 has moved into position in the horizontal direction.

[0058] By setting the detection spring 903, it is possible to judge whether the spindle body 5 has been lifted into place in the vertical direction, control the lifting assembly 6 to stop lifting in time, and stabilize the height position of the supporting assembly 1 and the spindle body 5; it is also possible to judge whether the spindle body 5 has been moved into place in the horizontal direction, control the lifting assembly 3 to drive the spindle body 5 to stop moving in time, and ensure that the spindle body 5 is lifted and moved into place.

[0059] By providing the lifting assembly 6, the main shaft body 5 is provided with a power source for lifting along the tower 801. Figure 7As shown in the figure, the lifting component 6 includes a hanging ring 601, which is fixedly arranged on the load-bearing plate 101. A hook 602 is movably arranged on the hanging ring 601. A steel wire rope 603 is fixedly arranged on the hook 602. A fixed pulley 604 is fixedly arranged on the wind turbine component 8. One end of the steel wire rope 603 bypasses the fixed pulley 604 and is connected to a winch 607. The winch 607 is installed at the bottom of the tower barrel 801. The fixed pulley 604 is fixedly installed on the wind turbine component 8 through a steel frame 605. The steel frame 605 is fixedly installed on the nacelle box 802. A rain shield 606 is arranged between the steel frame 605 and the wind turbine component 8. An opening is arranged on the rain shield 606, and the opening is correspondingly arranged with the fan-shaped opening 105 and the connection opening between the nacelle box 802 and the rotating blade 803. During use, by controlling the forward and reverse rotation of the winch 607, the retraction and release of the steel wire rope 603 are realized. With the assistance of the fixed pulley 604, the supporting component 1 is driven to lift and lower along the tower barrel 801 through the hanging ring 601.

[0060] As Figures 7 to 10 shown in the figure, the wind turbine component 8 includes a tower barrel 801. Traction columns 7 are symmetrically arranged on the outer side surface of the tower barrel 801. A nacelle box 802 is arranged at the top of the tower barrel 801. A rotating blade 803 is rotatably arranged at one end of the nacelle box 802. A bearing seat 804 is arranged inside the nacelle box 802. The main shaft body 5 is installed in the bearing seat 804. A wind vane 805 and an anemometer 806 are arranged on the nacelle box 802. The supporting component 1 includes a load-bearing plate 101. A guardrail 102 and a fan-shaped opening 105 are arranged on the load-bearing plate 101. The setting of the fan-shaped opening 105 enables the supporting component 1 to avoid the rotating blade 803 and smoothly lift and lower when any rotating blade 803 is fixed vertically downward. A movable door 103 is arranged on the guardrail 102. A round hole is arranged in the middle of the load-bearing plate 101. The tower barrel 801 is arranged in the round hole and does not contact the inner side of the round hole. Notches 104 are symmetrically arranged at the edge of the round hole. The traction columns 7 are arranged in the notches 104.

[0061] The sealing plate component 2 includes an inner track 201 and an outer track 202. An inner roller 203 is movably arranged in the inner track 201. A translation motor 204 is fixedly connected to one side of the inner roller 203, and an arc plate 205 is rotatably connected to the other side. Hanging rail wheels 207 are evenly arranged on the arc plate 205. A supplementary plate 206 is arranged on the arc plate 205. Rotating screw rods 208 are evenly arranged on the bottom surface of the supplementary plate 206. A lifting motor 209 is connected to the end of the rotating screw rod 208 far away from the supplementary plate 206.

[0062] When the main shaft needs to be replaced or overhauled, first use a crane to remove the rotating blade 803, then release the locking of the bearing housing 804 on the main shaft body 5, control the lifting of the supporting component 1 along the outside of the tower barrel 801, and the sealing plate component 2 seals the fan-shaped opening 105. The specific steps are as follows: control the rotation of the translation motor 204 to drive the inner roller 203 to move along the inner track 201, thereby driving the arc plate 205 to move below the fan-shaped opening 105, and then control the rotation of the lifting motor 209 to drive the rotating screw 208 to rotate, jack up the supplementary plate 206 so that its top surface is flush with the top surface of the load-bearing plate 101, complete the sealing of the fan-shaped opening 105. After the staff stands on the load-bearing plate 101, control the sealing plate component 2 to seal the fan-shaped opening 105, which is convenient for subsequent users to walk or for the lifting component 3 to walk on the load-bearing plate 101 along the annular track 10.

[0063] When the supporting component 1 is located at the bottom of the tower barrel 801, the fan-shaped opening 105 is in an open state. There is a walking step at the bottom of the tower barrel 801, and the walking step is located in the fan-shaped opening 105, which is convenient for the staff to step onto the load-bearing plate 101 along the walking step for operation activities.

[0064] When the wind turbine generator assembly 8 needs to be overhauled, for example, when painting the tower barrel 801 or checking the external condition of the rotating blade 803, braking is required to avoid excessive airflow driven by the rotation of the rotating blade 803, which may cause danger to the staff performing inspection operations outside the tower barrel 801. To save the inspection time, the rotating blade 803 and the tower barrel 801 can be inspected and repaired simultaneously. Rotate any one of the rotating blades 803 to the lower vertical direction for braking. After successful braking, drive the supporting component 1 to rise through the lifting component 6, and the rotating blade 803 passes through the fan-shaped opening 105, which is convenient for the staff to simultaneously overhaul the tower barrel 801 and the rotating blade 803.

[0065] The working principle of the present invention: When the main shaft body 5 needs to be replaced or installed, first, seal the fan-shaped opening 105, and control the sealing plate component 2 to seal the fan-shaped opening 105. The specific steps are as follows: The operating staff first step onto the load-bearing plate 101 through the walking step, then control the rotation of the translation motor 204 to drive the inner roller 203 to move along the inner track 201, thereby driving the arc plate 205 to move below the fan-shaped opening 105, and then control the rotation of the lifting motor 209 to drive the rotating screw 208 to rotate, jack up the supplementary plate 206 so that its top surface is flush with the top surface of the load-bearing plate 101, and complete the sealing of the fan-shaped opening 105.

[0066] Secondly, fix the main shaft body 5. Lift the main shaft body 5 with a crane, align it with the positioning column 416 and then place it on the movable cross plate 413. Then, control the output end of the horizontal telescopic cylinder 407 to extend, drive the clamping parts to approach each other through the supporting vertical plate 405, and clamp the main shaft body 5. When the abutting block 404 abuts against the outer surface of the main shaft body 5, the abutting block 404 compresses the clamping spring 403, and the clamping spring 403 generates a compression amount. When the clamping springs 403 of all clamping parts generate compression amounts, it means that at this time, the main shaft body 5 has been clamped and fixed. According to the compression amount of the clamping spring 403, the diameter of the main shaft body 5 is obtained, matched with the control group in the database, and the height of the current main shaft body 5 is obtained. Control the output end of the vertical telescopic cylinder 406 to extend so that the top surface of the clamping part at its end is flush with the top surface of the main shaft body 5, and the detection component 9 on the top surface of this clamping part protrudes from the top surface of the main shaft body 5.

[0067] Then, lift the supporting component 1. By controlling the forward rotation of the winch 607, the wire rope 603 is wound up. With the assistance of the fixed pulley 604, the supporting component 1 is driven to rise along the tower barrel 801 through the hanging ring 601 until the detection spring 903 generates a compression amount, which means that the ball 902 has abutted against the rain shield 606 at this time, the supporting component 1 has risen in place, and the main shaft body 5 has moved in place in the vertical direction. Stop the winding of the winch 607.

[0068] Then, move the clamping component 4. Control the driving motor 307 to rotate, and the driving wheel 306 drives the support beam 305 to move to the center position of the supplementary plate 206. Specifically: when the lifting component 3 drives the clamping component 4 and the main shaft body 5 to move along the track of the annular track 10, the detection spring 903 remains in a compressed state until reaching the position of the opening on the rain shield 606. The angle of the opening position is fixed. Therefore, when the compression amount of the detection spring 903 on the clamping part on the front side of the traveling direction disappears and the compression amount of the detection spring 903 on the rear side of the traveling direction does not disappear, it means that the center position of the main shaft body 5 has reached one side of the opening at this time. At this time, control the lifting component 3 to drive the main shaft body 5 to continue to travel half of the angle of the opening position and then stop traveling. The main shaft body 5 has moved in place horizontally. Then, control the output end of the lifting hydraulic cylinder 304 to extend to the maximum elongation amount, and raise the clamping component 4 to a position equivalent to the height of the bearing seat 804.

[0069] Finally, push the main shaft body 5 in, control the output end of the lifting telescopic cylinder 410 to extend, drive the clamping part, the main shaft body 5 and the rotating motor 409 to rise until the height of the rotating motor 409 reaches the position flush with the center height of the bearing seat 804. Then, control the rotating motor 409 to drive the main shaft body 5 to rotate to a horizontal state, and control the output ends of the push plate telescopic cylinder 415 and the longitudinal telescopic cylinder 406 to extend synchronously until the detection spring 903 of the detection component 9 is compressed. Stop the extension of the output end of the longitudinal telescopic cylinder 406, and the output end of the push plate telescopic cylinder 415 continues to extend until the movable cross plate 413 is driven to move to the farthest distance, so as to push the main shaft body 5 into the bearing seat 804 through the movable cross plate 413, completing the installation of the main shaft body 5.

[0070] Based on the technical solution of the above Embodiment 1, when the main shaft body 5 needs to be installed after overhaul or needs to be replaced because it cannot be used again after overhaul, the old main shaft body 5 needs to be first withdrawn from the nacelle box 802 and then transported to the bottom of the tower barrel 801 through the supporting component 1. If it is transported by a crane, the main shaft body 5 is still prone to shaking and hitting the tower barrel 801, resulting in paint peeling on the surface of the tower barrel 801.

[0071] Generally, a yaw system is arranged at the inner bottom of the nacelle box 802. After the wind vane 805 and the anemometer 806 measure the wind direction and wind speed, they output signals to the central control console. The yaw system drives the nacelle box 802 to rotate according to the signals of the central control console, so that the rotating blade 803 faces the wind to ensure that the wind power generator assembly 8 operates at the best rotation speed. When the nacelle box 802 rotates, the fan-shaped opening 105 of the bearing plate 101 is staggered from the connection opening between the nacelle box 802 and the rotating blade 803, resulting in the subsequent inability to repair the rotating blade 803 and the tower barrel 801 synchronously. Therefore, the technical solution of Embodiment 1 cannot cope with the situation where the nacelle box 802 rotates.

[0072] Although the clamping assembly 4 can clamp the main shaft body 5 of different sizes, after clamping, the distances between the two clamping plates 401 are inconsistent, resulting in inconsistent distances between the two closest detection components 9, thus causing deviations in the result of judging that the center of the current main shaft body 5 reaches one side of the opening of the rain shield 606 through the compression amounts of the detection springs 903 on the two clamping parts. When the main shaft body 5 is installed into the bearing seat 804 subsequently, an angular deviation occurs between the top surface of the main shaft body 5 and the bearing seat 804, resulting in wear on the surface of the main shaft body 5 and affecting the installation process at the same time.

[0073] Furthermore, Embodiment 2 is proposed to solve the above technical problems.

[0074] Embodiment 2:

[0075] When it is necessary to withdraw the main shaft body 5 from the bearing seat 804, through the cooperation of the lifting assembly 3 and the lifting telescopic cylinder 410, drive the height of the rotating motor 409 to reach a position flush with the center height of the bearing seat 804. Then, control the rotating motor 409 to drive the clamping part to rotate to the horizontal state. Control the output end of the longitudinal telescopic cylinder 406 to extend until the detection spring 903 in the detection assembly 9 is compressed, which means that the clamping part at the output end of the longitudinal telescopic cylinder 406 is already on both sides of the tail end of the main shaft body 5. Control the output end of the transverse telescopic cylinder 407 to extend, drive the clamping part to clamp the main shaft body 5. At the same time, control the output end of the longitudinal telescopic cylinder 406 to retract, withdraw the main shaft body 5 from the bearing seat 804, and then control the output end of the transverse telescopic cylinder 407 to retract to complete one withdrawal. Repeat the above clamping and withdrawal actions. At the same time, control the output end of the push plate telescopic cylinder 415 to extend, push the movable cross plate 413 to move to the farthest distance. A pressure sensor is set on the movable cross plate 413. When the pressure sensor detects pressure generation, it means that the tail end of the main shaft body 5 has contacted the movable cross plate 413 and the main shaft body 5 has been sleeved outside the positioning column 416. At this time, control the output ends of the longitudinal telescopic cylinder 406 and the push plate telescopic cylinder 415 to retract simultaneously, drive the main shaft body 5 to leave the bearing seat 804 until the staff observes that the head end of the main shaft body 5 leaves the bearing seat 804. At this time, control the rotating motor 409 to drive the clamping part and the main shaft body 5 to rotate to the vertical state to complete the withdrawal of the main shaft body 5.

[0076] By controlling the output end of the longitudinal telescopic cylinder 406 to reciprocally extend and retract, drive the clamping part to reciprocally move, thereby withdrawing the main shaft body 5 from the inside of the bearing seat 804 and stabilizing it on the lifting assembly 3 to ensure the stability of the main shaft body 5 during the withdrawal process.

[0077] As Figure 2 and Figure 7 shown, a turntable 13 is provided at the bottom of the tower barrel 801. The winch 607 is fixedly arranged on the turntable 13. The top end of the traction column 7 is fixedly arranged on the nacelle box 802, and the bottom end is fixedly arranged on the turntable 13. A support cross column 11 is arranged on one side of the traction column 7 close to the tower barrel 801. The support cross column 11 plays a role in supporting the traction column 7. A ring 12 is arranged on the support cross column 11. The ring 12 is rotatably connected to the tower barrel 801. An auxiliary wheel (not shown in the figure) is arranged on one side of the ring 12 in contact with the tower barrel 801. When the traction column 7 rotates circumferentially, the traction column 7 drives the ring 12 to rotate, and the auxiliary wheel can effectively reduce the friction between the ring 12 and the surface of the tower barrel 801.

[0078] When the yaw system drives the nacelle box 802 to rotate, the control turntable 13 synchronizes, thereby driving the traction column 7, the supporting component 1, and the lifting component 6 to rotate synchronously, so that the fan-shaped opening 105 of the load-bearing plate 101 always corresponds to the opening of the rain shield 606 and the connection opening between the nacelle box 802 and the rotating blade 803, ensuring that the outer side of the tower barrel 801 and the rotating blade 803 can be repaired synchronously subsequently.

[0079] By setting the turntable 13, when the yaw system drives the nacelle box 802 to rotate and aligns the rotating blade 803 with the wind direction, it can drive the supporting component 1 and the lifting component 6 to rotate synchronously, thereby ensuring that the tower barrel 801 and the rotating blade 803 can be repaired synchronously subsequently.

[0080] When the ball 902 in the detection component 9 abuts against the bearing seat 804, the detection spring 903 generates a compression amount. When the compression amounts of the detection springs 903 on the two clamping parts are the same, it means that the end face of the main shaft body 5 is parallel to the end face of the bearing seat 804 at this time, and the main shaft body 5 can smoothly enter the bearing seat 804; when the compression amount of the detection spring 903 on any clamping part is less than that on the other side, it means that there is an angular deviation between the end face of the main shaft body 5 and the end face of the bearing seat 804 at this time, and correction is required. At this time, control the lifting component 3 to drive the main shaft body 5 to move towards the side with a smaller compression amount of the detection spring 903. Specifically: control the driving motor 307 to drive the driving wheel 306 to slowly roll towards the direction with a smaller compression amount of the detection spring 903, thereby driving the end face of the main shaft body 5 to rotate until the compression amounts of the detection springs 903 on the two clamping parts are the same, which means that the end face of the main shaft body 5 is parallel to the end face of the bearing seat 804 at this time, and then stop the rotation of the driving motor 307.

[0081] By detecting the difference in the compression amounts of the detection springs 903 on the two clamping parts to determine whether the end face of the current main shaft body 5 is parallel to the end face of the bearing seat 804, thereby ensuring that the main shaft body 5 can smoothly enter the bearing seat 804 subsequently, and avoiding wear between the surface of the main shaft body 5 and the bearing seat 804 due to angular deviation, which affects the installation process.

[0082] Embodiment 3:

[0083] The present invention also provides a usage method of a wind turbine main shaft jacking device, including the following steps:

[0084] Step 1: Lift the main shaft body 5 and place it on the clamping component 4, control the sealing plate component 2 to close the fan-shaped opening 105, and lock the movable door 103.

[0085] Step 2: Control the lifting component 6 to lift the supporting component 1 to the top of the wind turbine component 8, and judge whether it is lifted in place in the vertical direction through the detection component 9.

[0086] Step 3: After the lifting is in place, control the lifting assembly 3 to drive the clamping assembly 4 to move along the annular track 10 to the central position of the sealing plate assembly 2, and determine whether the movement is in place in the horizontal direction through the detection assembly 9.

[0087] Step 4: Control the lifting assembly 3 to drive the clamping assembly 4 to rise, control the clamping assembly 4 to drive the main shaft body 5 to rise and rotate, align it with the bearing seat 804, and push the main shaft body 5 into the bearing seat 804 through the clamping assembly 4 to complete the lifting and installation of the main shaft body 5.

[0088] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. Wind turbine main shaft lifting equipment, characterized by: It includes a supporting assembly arranged on a wind turbine assembly, a sealing plate assembly, a lifting assembly and a lifting assembly are arranged on the supporting assembly, a clamping assembly is symmetrically arranged on the lifting assembly, a detection assembly is arranged on the clamping assembly, a main shaft body is placed between the clamping assemblies, a traction column is arranged on the wind turbine assembly, and a ring track is arranged on the supporting assembly; The clamping assembly includes a clamping part, the clamping part includes a clamping plate, a movable column is arranged on the clamping plate, a clamping spring is arranged on the outer side of the movable column, and a tightening block is arranged at the end of the movable column; the diameter of the main shaft body currently clamped is calculated by the compression amount of the clamping spring, and the size specification of the main shaft body is obtained by comparing with the control group data in the database; The detection component includes a lifting column, which is movably arranged on the clamping plate, a ball is arranged on the top of the lifting column, and a detection spring is arranged on the outer side of the lifting column; The lifting assembly includes a hanging ring, a hook is movably provided on the hanging ring, a steel wire rope is fixedly provided on the hook, a fixed pulley is fixedly provided on the wind turbine assembly, one end of the steel wire rope is passed around the fixed pulley and connected to a winch, the fixed pulley is fixedly installed on the wind turbine assembly through a steel frame, and a rain shield is provided between the steel frame and the wind turbine assembly; The wind turbine assembly includes a tower, traction columns are symmetrically arranged on the outer side of the tower, a nacelle box is arranged on the top of the tower, a bearing seat is arranged in the nacelle box, and a main shaft body is installed in the bearing seat; A turntable is provided at the bottom of the tower, a supporting horizontal column is provided on the side of the traction column close to the tower, a circular ring is provided on the supporting horizontal column, the circular ring is rotatably connected to the tower, and an auxiliary wheel is provided on the side of the circular ring in contact with the tower; The supporting assembly includes a load-bearing plate, a circular hole is arranged in the middle of the load-bearing plate, the tower is arranged in the circular hole and does not contact the inner side of the circular hole, a fan-shaped opening is arranged on the load-bearing plate, and the sealing plate assembly can close the fan-shaped opening.

2. The wind turbine main shaft lifting device according to claim 1, characterized in that: The clamping assembly also includes a supporting vertical plate, at least two clamping parts are arranged on the supporting vertical plate, a longitudinal telescopic cylinder is arranged on the supporting vertical plate, a clamping part is fixedly arranged on the output end of the longitudinal telescopic cylinder, and detection components are evenly arranged on the clamping part. A transverse telescopic cylinder is connected to the side of the supporting vertical plate, a fixed circular plate is arranged at the end of the transverse telescopic cylinder, a rotating motor is arranged on the fixed circular plate, the output end of the rotating motor passes through the fixed circular plate and is fixedly connected to the transverse telescopic cylinder, and a lifting telescopic cylinder is fixedly connected to the bottom of the fixed circular plate.

3. The wind turbine main shaft lifting device according to claim 2 is characterized in that: The lifting and telescopic cylinder is fixedly connected to the lifting assembly through a right-angle plate, a vertical plate is fixedly arranged on the outside of the transverse telescopic cylinder, a fixed horizontal plate and a movable horizontal plate are arranged on the end of the vertical plate away from the transverse telescopic cylinder, a push plate telescopic cylinder is arranged between the fixed horizontal plate and the movable horizontal plate, and a positioning column is fixedly arranged at the center of the movable horizontal plate.

4. The wind turbine main shaft lifting device according to claim 1, characterized in that: The lifting assembly includes a lifting push plate and a transport plate, a folding arm and a lifting hydraulic cylinder are arranged between the lifting push plate and the transport plate, the lifting hydraulic cylinder is arranged between the folding arms, a support beam is arranged parallel to the bottom of the transport plate, a plurality of wheels are arranged in the support beam, a driving motor is arranged on any wheel, a plurality of guide wheels are arranged on one side of the transport plate, the guide wheels are provided with grooves along the radial direction, and the annular track is embedded in the groove.

5. The main shaft lifting device of a wind turbine generator according to claim 1, characterized in that: The sealing plate assembly includes an inner track and an outer track, an inner roller is movably arranged in the inner track, one side of the inner roller is fixedly connected to a translation motor, and the other side is rotatably connected to an arc plate, hanging rail wheels are evenly arranged on the arc plate, a supplementary plate is arranged on the arc plate, rotating screws are evenly arranged on the bottom surface of the supplementary plate, and the end of the rotating screw away from the supplementary plate is connected to a lifting motor.

6. The wind turbine main shaft lifting device according to claim 1, characterized in that: A wind vane and anemometer are provided on the nacelle box.

7. The wind turbine main shaft lifting device according to claim 1, characterized in that: One end of the cabin box is rotatably provided with a rotating blade.

8. The wind turbine main shaft lifting device according to claim 7, characterized in that: A guardrail is arranged on the load-bearing plate, a movable door is arranged on the guardrail, notches are symmetrically opened on the edge of the circular hole, and traction columns are arranged in the notches.

9. The method for using the wind turbine main shaft lifting device according to claim 8, characterized in that: The following steps are involved: Step 1: Lift the main shaft body and place it on the clamping assembly, control the sealing plate assembly to close the fan-shaped opening, and lock the movable door; Step 2: Control the lifting assembly to lift the supporting assembly to the top of the wind turbine assembly, and use the detection assembly to determine whether it is lifted to the right position in the vertical direction; Step 3: After lifting into place, control the lifting assembly to drive the clamping assembly to move along the circular track to the center position of the sealing plate assembly, and use the detection assembly to determine whether it has moved into place in the horizontal direction; Step 4: Control the lifting assembly to drive the clamping assembly to rise, control the clamping assembly to drive the spindle body to rise and rotate, align it with the bearing seat, push the spindle body into the bearing seat through the clamping assembly, and complete the lifting and installation of the spindle body.

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