A multi-head drive turning gear for wind turbine

Abstract

The present invention relates to the field of wind power generation, and specifically to a multi-head drive winch for a wind turbine, comprising a main casing, a flange connection plate, a multi-head drive assembly, an active rotating mechanism, a separation mechanism and an axial clutch assembly, wherein the multi-head drive assembly comprises a planetary transmission mechanism and a hydraulic rotating mechanism, and the axial clutch assembly comprises a movable docking shaft. The device applies power to a gear plate through a group of planetary transmission mechanisms, thereby avoiding the problem of asynchronism of multiple drive gears caused by inconsistent power, and arbitrarily and accurately adjusting the angle of the flange connection plate through the active drive assembly. At the same time, the active drive assembly does not occupy any extra space at the bottom of the main casing. A multi-way oil pipe group is equidistantly and cross-arranged along the axial direction of the connecting shaft, so that the resistance propeller is continuously pushed by oil pressure during the circular rotation. When the device is in operation, the movable docking shaft is separated from the input shaft of the generator, thereby reducing the energy consumption caused by driving the generator to rotate.

Description

Technical Field

[0001] The invention relates to the field of wind power generation, and in particular to a multi-head drive winch of a wind turbine generator set. Background Art

[0002] As a clean and renewable energy source, wind energy is gaining more and more attention. Wind energy can be converted into electrical energy through wind turbines. A wind turbine includes a tower, a nacelle, an impeller, a gearbox and a generator. The tower is installed on the ground, the nacelle is fixedly installed on the top of the tower, the impeller is rotatably installed on the nacelle, and the gearbox and the generator are both installed in the nacelle. Among them, the impeller includes a hub and three blades, and the three blades are installed on the hub. The hub is connected to the input end of the gearbox through the wind rotor shaft, and the output end of the gearbox is connected to the generator through the generator shaft. The wind blows the impeller to rotate, and the impeller drives the generator through the gearbox to generate electricity.

[0003] At present, when installing the blades, it is necessary to use a winch device to drive the wheel hub to rotate to a specified angle. The winch device is lifted into the cabin by a lifting device, and the winch device is fixed by hingedly connecting the winch body with the reaction arm on the base. The winch device fixes the winch gear to the output shaft of the gear box through a flange connecting plate. During the connection process, the reaction arm is used to lift and drive the winch body to rotate, and then the flange connecting plate angle is adjusted to connect with the output shaft of the gear box. However, this method has the disadvantages that the reaction arm occupies more vertical space and the rotation angle of the winch body is limited. At the same time, the prior art generally uses a multi-drive end method to drive the winch gear to rotate. Multiple drive gears need to keep synchronized when driving the winch gear to rotate. When the driving force is inconsistent, for example, the oil pipe of a certain drive end is blocked and the hydraulic pressure is insufficient, the rotation speed and torque of the multiple drive gears are different, which will have a negative effect on the driving winch gear and may even fail to winch normally. Summary of the invention

[0004] Based on this, it is necessary to provide a multi-head drive winch for a wind turbine set in response to the existing technical problems.

[0005] In order to solve the problems of the prior art, the technical solution adopted by the present invention is:

[0006] A wind turbine multi-drive turning gear, comprising:

[0007] Main body shell;

[0008] A multi-head drive assembly is located inside the main housing and includes a planetary transmission mechanism and a hydraulic rotation mechanism. The planetary transmission mechanism includes a sun gear, a gear plate and a plurality of reducers evenly distributed between the sun gear and the gear plate in the circumferential direction. The output end and the input end of each reducer are respectively meshed with the sun gear and the gear plate. The gear plate is fixedly axially connected to the inner center of the main housing. One side of the sun gear is coaxially fixedly connected with a flange connecting plate extending out of the main housing and used to connect the fan blades. The flange connecting plate is fixedly axially connected to the shell wall of the main housing. The hydraulic rotation mechanism includes a resistance paddle and a plurality of oil pipe groups for driving the resistance paddle to rotate. A connecting shaft extending out of the main housing is fixedly fixed on the side of the gear plate away from the sun gear. The resistance paddle is fixedly sleeved on the outer end of the connecting shaft. All oil pipe groups are evenly distributed along the circumferential direction of the resistance paddle and the oil pipe groups are arranged at intervals along the axial direction of the resistance paddle.

[0009] The active rotating assembly is arranged directly below the multi-head driving assembly and is drivingly connected to the outer ring of the gear plate;

[0010] A separation mechanism is disposed beside the active rotating component and is used to drive the active rotating component to engage or disengage with the gear plate;

[0011] The shaft-connected clutch assembly is arranged between the connecting shaft and the generator input shaft, and the shaft-connected clutch assembly includes a movable docking shaft capable of docking with the generator input shaft, and the other end of the movable docking shaft is coaxial and movably inserted into the interior of the connecting shaft;

[0012] Among them, the multi-head drive assembly also includes a hydraulic assembly for driving the hydraulic rotating mechanism to work, and the hydraulic assembly is provided with an oil distribution pipe that is branched to the movable docking shaft. The oil is drained to the movable connecting shaft through the oil distribution pipe to push the movable connecting shaft to separate from the generator input shaft.

[0013] Furthermore, the main shell includes a support frame, a first bearing, a second bearing and a support partition for fixing the reducer. The first bearing is axially connected to the flange connection plate and fixed to the shell wall of the main shell. The support partition is fixedly arranged at the inner center of the main shell. The second bearing is axially connected to the gear plate and fixed to the support partition. The several reducers all include an input gear and an output gear. The input gear is meshed with the inner gear ring of the gear plate, and the output gear is meshed with the outer gear ring of the sun gear.

[0014] Furthermore, the active rotating assembly includes a worm wheel, a worm, a reduction motor, a driving gear and a driven gear. The worm wheel is sleeved on the connecting shaft of the gear plate, the worm is horizontally arranged below the worm wheel, the reduction motor is horizontally arranged on one side of the bottom of the main shell, the driven gear is sleeved on one end of the worm near the reduction motor, the driving gear is sleeved on the output shaft of the reduction motor and meshes with the driven gear, and the main shell is formed with a first slide groove for the worm to move laterally.

[0015] Furthermore, the hydraulic rotating mechanism also includes a hydraulic guide housing for installing the oil pipe group, and the hydraulic guide housing is fixedly arranged on a side of the main housing close to the generator;

[0016] The resistance propeller includes a central column for fixing the sleeve connecting shaft, a blade for generating thrust, and a plurality of circular partition plates for dividing the hydraulic guide housing into a plurality of oil temporary storage chambers along the axial direction. A groove is formed at the outer edge of the blade, and a U-shaped sealing ring is arranged in the groove to fit the inner side of the hydraulic guide housing.

[0017] The plurality of oil pipe groups are arranged in one-to-one correspondence with the oil temporary storage chambers, and each oil pipe group includes an oblique oil inlet pipe and an oblique oil outlet pipe with consistent axis angles. The oblique oil inlet pipe and the oblique oil outlet pipe are both arranged on the hydraulic guide housing with their axes facing the top of the blades, and adjacent oil pipe groups are cross-arranged along the circumferential direction of the connecting shaft.

[0018] Furthermore, the shaft-connected clutch assembly also includes a sleeve, a third bearing and a spring. The two ends of the sleeve are respectively connected to the generator input shaft and the connecting shaft through the third bearing. An annular limiting flange for limiting the movable docking shaft is formed on the inner wall of the sleeve. The spring is sleeved on the movable docking shaft and the two ends of the spring are respectively connected to the movable docking shaft and the connecting shaft. The movable docking shaft and the generator input shaft are respectively formed with one-way gear discs at the docking point.

[0019] Furthermore, a cylindrical groove for movement of the movable docking shaft and an oil inlet for draining oil are formed on the inner wall of the sleeve, the oil outlet of the oil inlet is evenly distributed along the circumferential direction of the cylindrical groove, the annular limiting flange is formed with a first embedding groove, a first dynamic sealing ring that fits the outer wall of the movable docking shaft is arranged in the first embedding groove, a support ring for fixing a spring is formed on the outer wall of the movable docking shaft, a second embedding groove is formed at the outer edge of the support ring, and a second dynamic sealing ring that fits the cylindrical groove is arranged in the second embedding groove.

[0020] Furthermore, a limiting sliding groove is formed on the outer wall of the connecting shaft into which the movable docking shaft is inserted, and a limiting convex strip corresponding to the limiting sliding groove is formed on the inner wall of the connecting shaft.

[0021] Furthermore, the hydraulic rotating mechanism also includes a neck sealing ring, which is sleeved at the connection between the hydraulic guide housing and the connecting shaft, and a limiting ring that is close to the neck sealing ring is formed on the outer wall of the connecting shaft.

[0022] Furthermore, the separation mechanism includes a slide for fixing the reduction motor, a short slide rail for allowing the slide to translate, and a cylinder for pushing the slide to translate. The short slide rails are arranged on both sides of the main shell, and the push rod of the cylinder is connected to the middle of the slide.

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

[0024] Firstly, the device applies power to a gear plate through a set of planetary transmission mechanisms, and then drives multiple reducers synchronously through the gear plate, thus avoiding the problem of asynchronism of multiple driving gears caused by inconsistent power;

[0025] Secondly, the active drive component of the device can drive the gear plate to adjust the flange connection plate arbitrarily and accurately. At the same time, the active drive component is arranged below the multi-head drive component and at the bottom of the main housing without occupying too much space.

[0026] Thirdly, the hydraulic rotating mechanism of the equipment uses a multi-channel oil pipe group equidistantly arranged along the axial direction of the connecting shaft, so that the resistance propeller is pushed by continuous oil pressure during the circular rotation process;

[0027] Fourthly, the device connects the winch to the generator input shaft through a shaft-connected clutch assembly. When the device is started, the movable docking shaft is separated from the generator input shaft, thereby reducing the energy consumption caused by driving the generator to rotate. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0029] Figure 2 It is a three-dimensional structural schematic diagram of the multi-head drive assembly of the present invention;

[0030] Figure 3 It is a schematic diagram of the three-dimensional structure decomposition of the present invention;

[0031] Figure 4 It is a three-dimensional structural schematic diagram of the planetary transmission mechanism of the present invention;

[0032] Figure 5 It is a three-dimensional structural schematic diagram of the active rotating mechanism of the present invention;

[0033] Figure 6 It is a three-dimensional exploded schematic diagram of the hydraulic rotating mechanism of the present invention;

[0034] Figure 7 is a side view of the present invention;

[0035] Figure 8 yes Figure 7 Sectional view at A in the middle;

[0036] Fig. 9 yes Figure 8 A magnified schematic diagram of the structure at B in the middle;

[0037] Fig.10 It is a three-dimensional exploded schematic diagram of the shaft-connected clutch assembly of the present invention;

[0038] The numbers in the figure are: 1, main body shell; 2, support frame; 3, first bearing; 4, first slide groove; 5, support partition; 6, second bearing; 7, flange connection plate; 8, multi-head drive assembly; 9, planetary transmission mechanism; 10, gear plate; 11, connecting shaft; 12, limit ring; 13, limit convex strip; 14, reducer; 15, input gear; 16, output gear; 17, sun gear; 18, hydraulic rotation mechanism; 19, hydraulic guide shell; 20, oil pipe group; 21, oblique oil outlet pipe; 22, oblique oil inlet pipe; 23, resistance paddle; 24, circular partition plate; 25, oil temporary storage chamber; 26, center column; 27, paddle blade; 2 8. Slot; 29. ​​U-shaped sealing ring; 30. Neck sealing ring; 31. Active rotating assembly; 32. Worm wheel; 33. Worm; 34. Driven gear; 35. Active gear; 36. Reducer motor; 37. Separation mechanism; 38. Short slide rail; 39. Cylinder; 40. Slide; 41. Shaft-connected clutch assembly; 42. Sleeve; 43. Cylindrical slide groove; 44. Oil inlet; 45. Annular limit flange; 46. First embedded groove; 47. First dynamic sealing ring; 48. Third bearing; 49. Movable docking shaft; 50. Support ring; 51. Second embedded groove; 52. Second dynamic sealing ring; 53. One-way toothed disc; 54. Limit slide groove; 55. Spring. DETAILED DESCRIPTION

[0039] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0040] refer to Figure 1-Figure 10 :

[0041] A wind turbine multi-drive turning gear, comprising:

[0042] Main body shell 1;

[0043] The multi-head drive assembly 8 is located inside the main housing 1 and includes a planetary transmission mechanism 9 and a hydraulic rotation mechanism 18. The planetary transmission mechanism 9 includes a sun gear 17, a gear plate 10 and a plurality of reducers 14 evenly distributed between the sun gear 17 and the gear plate 10 along the circumferential direction. The output end and the input end of each reducer 14 are respectively engaged with the sun gear 17 and the gear plate 10. The gear plate 10 is fixedly connected to the inner center of the main housing 1. One side of the sun gear 17 is coaxially fixedly connected with a protruding from the main housing 1 and A flange connection plate 7 for connecting the fan blades, the flange connection plate 7 is axially connected to the shell wall of the main shell 1 at a fixed point, the hydraulic rotation mechanism 18 includes a resistance paddle 23 and a plurality of oil pipe groups 20 for driving the resistance paddle 23 to rotate, a connecting shaft 11 extending from the main shell 1 is fixed on the side of the gear plate 10 away from the sun gear 17, the resistance paddle 23 is fixedly sleeved on the outer end of the connecting shaft 11, all the oil pipe groups 20 are evenly distributed along the circumferential direction of the resistance paddle 23 and the oil pipe groups 20 are arranged at intervals along the axial direction of the resistance paddle 23;

[0044] The active rotating assembly 31 is disposed directly below the multi-head driving assembly 8 and is drivingly connected to the outer ring of the gear plate 10;

[0045] The separation mechanism 37 is disposed beside the active rotating component 31 and is used to drive the active rotating component 31 to engage or disengage with the gear plate 10;

[0046] The shaft-connected clutch assembly 41 is arranged between the connecting shaft 11 and the generator input shaft. The shaft-connected clutch assembly 41 includes a movable docking shaft 49 that can dock with the generator input shaft. The other end of the movable docking shaft 49 is coaxial and movably inserted into the interior of the connecting shaft 11.

[0047] Before the present device performs the cranking operation, the active rotating component 31 is first used to drive the gear plate 10 to rotate, and the gear plate 10 synchronously drives the input ends of multiple reducers 14, and the output ends of the reducers 14 synchronously drive the sun gear 17 to rotate, thereby rotating the flange connecting plate 7 fixed on the sun gear 17. When the bolt holes on the flange connecting plate 7 and the output shaft of the gear box are aligned, the active rotating component 31 stops, and the flange connecting plate 7 is fixedly connected to the gear box. Then, the separation mechanism 37 next to the active driving component is started to separate the active rotating component 31 from the gear plate 10, so that the passive limiting effect of the active rotating component 31 on the planetary transmission mechanism 9 is cancelled. When starting the cranking work, the hydraulic component first passes the hydraulic oil into the oil circuit pipe group 20 and the shaft-connected clutch component 41 through the oil distribution pipe, the hydraulic oil drives the resistance paddle 23 to rotate, the resistance paddle 23 drives the gear plate 10 to rotate, the planetary transmission mechanism 9 drives the flange connection plate 7 to rotate, the flange connection plate 7 drives the output shaft of the gear box to rotate, the gears in the gear box rotate and then drive the wind wheel shaft and the hub to rotate, and at the same time, the hydraulic oil passed into the shaft-connected clutch component 41 will push the movable docking shaft 49 to separate from the input shaft of the generator.

[0048] In order to make the planetary transmission mechanism 9 operate stably in the main housing 1, the following features are specifically provided:

[0049] The main housing 1 includes a support frame 2, a first bearing 3, a second bearing 6 and a support partition 5 for fixing the reducer 14. The first bearing 3 is axially connected to the flange connection plate 7 and fixed to the shell wall of the main housing 1. The support partition 5 is fixedly arranged at the inner center of the main housing 1. The second bearing 6 is axially connected to the gear plate 10 and fixed on the support partition 5. The several reducers 14 each include an input gear 15 and an output gear 16. The input gear 15 is meshed with the inner gear ring of the gear plate 10, and the output gear 16 is meshed with the outer gear ring of the sun gear 17.

[0050] First, the first bearing 3 is fixed on the shell wall of the main shell 1, so that the sun gear 17 can be fixed at the shell wall position of the main shell 1, and the supporting partition 5 can separate the planetary transmission mechanism 9 and the active rotating mechanism in the main shell 1. The second bearing 6 is fixed on the supporting partition 5, so that the gear plate 10 can rotate at a fixed point in the main shell 1. The reducer 14 that is connected to the gear plate 10 and the sun gear 17 is fixed on the supporting frame 2 in the main shell 1, and the input gear 15 and the output gear 16 at both ends of the reducer 14 are respectively meshed with the gear plate 10 and the sun gear 17, and the entire planetary transmission mechanism 9 will not fall off during operation.

[0051] In order to enable the active rotating assembly 31 to play the role of driving the flange connection plate 7, the following features are specifically set:

[0052] The active rotating component 31 includes a worm wheel 32, a worm 33, a reduction motor 36, a driving gear 35 and a driven gear 34. The worm wheel 32 is sleeved on the connecting shaft 11 of the gear plate 10. The worm 33 is horizontally arranged below the worm wheel 32. The reduction motor 36 is horizontally arranged on one side of the bottom of the main housing 1. The driven gear 34 is sleeved on one end of the worm 33 close to the reduction motor 36. The driving gear 35 is sleeved on the output shaft of the reduction motor 36 and meshes with the driven gear 34. The main housing 1 is formed with a first slide groove 4 for the worm 33 to translate laterally.

[0053] When the turning device is docked with the gear box, the reduction motor 36 is started, and the output shaft of the reduction motor 36 drives the driving gear 35 to rotate, and the driving gear 35 synchronously drives the driven gear 34 sleeved on the worm 33 to rotate, and the worm 33 drives the worm wheel 32 to rotate, and the worm wheel 32 drives the gear plate 10 to rotate and then rotates the flange connection plate 7, and the first slide groove 4 on the main housing 1 can make the worm 33 translate laterally and separate from the worm wheel 32.

[0054] In order to enable the hydraulic rotating mechanism 18 to effectively drive the turning device to operate, the following features are specifically set:

[0055] The hydraulic rotating mechanism 18 also includes a hydraulic guide housing 19 for installing the oil pipe group 20. The hydraulic guide housing 19 is fixedly arranged on a side of the main housing 1 close to the generator;

[0056] The resistance paddle 23 includes a central column 26 for fixing the sleeve connecting shaft 11, a paddle 27 for generating thrust, and a plurality of circular partition plates 24 for dividing the hydraulic guide housing 19 into a plurality of oil temporary storage chambers 25 along the axial direction. A groove 28 is formed at the outer edge of the paddle 27, and a U-shaped sealing ring 29 is arranged in the groove 28 to fit the inner side of the hydraulic guide housing 19.

[0057] The plurality of oil pipe groups 20 are arranged in one-to-one correspondence with the oil temporary storage chambers 25, and each oil pipe group 20 includes an oblique oil inlet pipe 22 and an oblique oil outlet pipe 21 with the same axis angle. The oblique oil inlet pipe 22 and the oblique oil outlet pipe 21 are both arranged on the hydraulic guide housing 19 with their axes facing the top of the blade 27, and adjacent oil pipe groups 20 are cross-arranged along the circumferential direction of the connecting shaft 11.

[0058] The turning device is officially in operation, and the oil distribution pipes pass the oil into multiple groups of oil circuit pipe groups 20. The oil respectively enters the oil temporary storage chamber 25 divided by the circular partition plate 24 in the hydraulic guide housing 19. Since the outlet end of the oblique oil inlet pipe 22 faces the top of the paddle 27, according to the lever principle, the oil is more likely to push the paddle 27 to rotate. The U-shaped sealing ring 29 on the paddle 27 can prevent the oil in different oil temporary storage chambers 25 from mixing and the oil in the hydraulic guide housing 19 from leaking. When the oil flows along the circumferential direction of the hydraulic guide housing 19 to the oblique oil outlet pipe 21, it will leave the hydraulic guide housing 19 and return to the hydraulic component to form a loop, and the adjacent oil circuit pipe groups 20 are cross-arranged along the circumferential direction of the connecting shaft 11 so that before the paddle 27 loses the oil pressure push of one group, the oil of the adjacent oil circuit pipe group 20 will continue to push the paddle 27 to rotate, thereby ensuring that the paddle 27 can be continuously pushed by the hydraulic oil during one rotation.

[0059] In order to make the shaft-connected clutch assembly 41 detachable from the generator input shaft, the following features are specifically provided:

[0060] The shaft-connected clutch assembly 41 also includes a sleeve 42, a third bearing 48 and a spring 55. The two ends of the sleeve 42 are respectively connected to the generator input shaft and the connecting shaft 11 through the third bearing 48. An annular limiting flange 45 for limiting the movable docking shaft 49 is formed on the inner wall of the sleeve 42. The spring 55 is sleeved on the movable docking shaft 49 and the two ends of the spring 55 are respectively connected to the movable docking shaft 49 and the connecting shaft 11. The movable docking shaft 49 and the generator input shaft are respectively formed with a one-way gear disc 53 at the docking point.

[0061] The third bearings 48 fixedly arranged at both ends of the sleeve 42 can make the generator input shaft and the connecting shaft 11 coaxial at a fixed point. The one-way geared discs 53 respectively formed at the connection between the generator input shaft and the movable docking shaft 49 can cooperate and rotate without disengagement. The movable docking shaft 49 is connected to the connecting shaft 11 through a spring 55 to ensure that when the equipment stops, the spring 55 pushes the movable docking shaft 49 to complete the docking with the generator input shaft. At the same time, the annular limit flange 45 formed on the sleeve 42 can prevent the spring 55 from exerting excessive force, which will cause the movable docking shaft 49 to exert excessive axial pressure on the generator input shaft.

[0062] In order to prevent the oil from pushing the movable docking shaft 49 and the oil in the sleeve 42 from leaking, the following features are specifically provided:

[0063] The inner wall of the sleeve 42 is formed with a cylindrical groove 43 for the movable docking shaft 49 to move and an oil inlet 44 for draining oil. The oil outlet of the oil inlet 44 is evenly distributed along the circumferential direction of the cylindrical groove 43. The annular limiting flange 45 is formed with a first embedding groove 46, and a first dynamic sealing ring 47 that fits the outer wall of the movable docking shaft 49 is arranged in the first embedding groove 46. The outer wall of the movable docking shaft 49 is formed with a support ring 50 for fixing a spring 55, and a second embedding groove 51 is formed at the outer edge of the support ring 50, and a second dynamic sealing ring 52 that fits the cylindrical groove 43 is arranged in the second embedding groove 51.

[0064] When the equipment is operating, the oil inlet 44 on the cylindrical groove 43 will guide the oil into the sleeve 42, and the support ring 50 and the inner wall of the sleeve 42 will form a chamber. The oil entering the chamber will impact the support ring 50 to make it move in the cylindrical groove 43. At the same time, the second dynamic sealing ring installed on the support ring 50 and the first dynamic sealing ring installed on the annular limit flange 45 can ensure that the oil will not leak when the oil pushes the movable docking shaft 49 to move in the sleeve 42.

[0065] In order to enable the movable docking shaft 49 to be inserted into the connecting shaft 11, the following features are specifically provided:

[0066] The movable docking shaft 49 is inserted into the outer wall of the connecting shaft 11 to form a limiting sliding groove 54 , and the inner wall of the connecting shaft 11 is formed with a limiting convex strip 13 corresponding to the limiting sliding groove 54 .

[0067] An axial limiting ridge 13 is formed on the inner wall of the connecting shaft 11, and a limiting groove 54 matching the limiting ridge 13 is provided on the outer wall of the movable docking shaft 49 inserted into the connecting shaft 11. The movable docking shaft 49 can move axially in the connecting shaft 11. At the same time, when the connecting shaft 11 rotates, the limiting ridge 13 inserted into the limiting groove 54 can drive the movable docking shaft 49 to rotate synchronously.

[0068] In order to prevent the oil between the hydraulic guide housing 19 and the connecting shaft 11 from leaking, the following features are also specifically provided:

[0069] The hydraulic rotating mechanism 18 further includes a neck sealing ring 30 , which is sleeved at the connection between the hydraulic flow guide housing 19 and the connecting shaft 11 . A limiting ring 12 is formed on the outer wall of the connecting shaft 11 to fit closely with the neck sealing ring 30 .

[0070] The neck sealing ring 30 is sleeved on the connection between the hydraulic guide housing 19 and the connecting shaft 11. When the paddle 27 rotates, it will exert pressure on one side of the neck sealing ring 30 on the hydraulic guide housing 19. The other end of the neck sealing ring 30 is pressed tightly by the limiting ring 12 on the connecting shaft 11. The neck sealing ring 30 is slightly deformed so that it is close to the connection between the hydraulic guide housing 19 and the connecting shaft 11, and oil will not leak.

[0071] In order to enable the worm 33 to be engaged or disengaged with the worm wheel 32, the following features are specifically provided:

[0072] The separation mechanism 37 includes a slide 40 for fixing the reduction motor 36, a short slide rail 38 for allowing the slide 40 to translate, and a cylinder 39 for pushing the slide 40 to translate. The short slide rail 38 is arranged on both sides of the main shell 1, and the push rod of the cylinder 39 is connected to the middle of the slide 40.

[0073] After the flange connection plate 7 is connected to the output shaft of the gear box, the oil cylinder 39 is started, and the piston push rod of the oil cylinder 39 pushes the slide 40 to translate on the short slide rail 38. The slide 40 drives the reduction motor 36 and the worm 33 to move horizontally, and the worm 33 is separated from the worm wheel 32.

[0074] Working principle: Before the equipment starts the turning operation, the reduction motor 36 is first started. The output shaft of the reduction motor 36 drives the driving gear 35 to rotate. The driving gear 35 synchronously drives the driven gear 34 sleeved on the worm 33 to rotate. The worm 33 drives the worm wheel 32 to rotate. Since the worm wheel 32 is fixedly sleeved on the connecting shaft 11 of the gear plate 10, the gear plate 10 rotates accordingly. The inner gear ring of the gear plate 10 meshes with the input gear 15 of the reducer 14, which synchronously drives the input gear 15 to rotate. At the same time, the reducer 14 The meshing of the output gear 16 with the outer gear ring of the sun gear 17 will synchronously drive the sun gear 17 to rotate, thereby rotating the flange connection plate 7 coaxially fixed to the sun gear 17. When the flange connection plate 7 is aligned with the bolt holes at the input end of the gear box and the fixed connection is completed, the reduction motor 36 stops and the cylinder 39 is started. The piston push rod of the cylinder 39 pushes the slide 40 to translate on the short slide rail 38. The slide 40 drives the reduction motor 36 and the worm 33 to move horizontally, so that the active rotating component 31 is separated from the multi-head drive component 8.

[0075] The turning device is officially in operation, and the hydraulic component passes the oil into multiple groups of oil circuit pipe groups 20 through the oil distribution pipes. The oil enters the oil temporary storage chamber 25 divided by the circular partition plate 24 in the hydraulic guide housing 19. Since the outlet end of the oblique oil inlet pipe 22 faces the top of the blade 27, according to the lever principle, the force arm of the oil at the point of action on the blade 27 is longer, and it is easier to push the blade 27 to rotate. When the oil flows along the circumferential direction of the hydraulic guide housing 19 to the oblique oil outlet pipe 21, it will leave the hydraulic guide housing 19 and return to the hydraulic component to form a loop, and the adjacent oil circuit pipe groups 20 are cross-arranged along the circumferential direction of the connecting shaft 11 so that before the blade 27 loses the oil pressure push of one group, the oil of the adjacent oil circuit pipe group 20 will continue to push the blade 27 to rotate, which can ensure that the blade 27 can rotate during one circle. Continuously pushed by the hydraulic oil, the U-shaped sealing ring 29 on the blade 27 can prevent the oil in different oil storage chambers 25 from mixing. The neck sealing ring 30 is located on one side of the hydraulic guide housing 19 and conflicts with the U-shaped sealing ring 29, and the other side of the neck sealing ring 30 is pressed tightly by the limiting ring 12 on the connecting shaft 11. When the blade 27 rotates, the neck sealing ring 30 and the U-shaped sealing ring 29 rub to produce micro-deformation, thereby clinging to the connection between the hydraulic guide housing 19 and the connecting shaft 11 to ensure that the oil does not leak. The blade 27 is fixedly sleeved on the connecting shaft 11, which can drive the gear plate 10 to rotate and then drive the entire planetary transmission mechanism 9 to drive the flange connecting plate 7 to rotate. The flange connecting plate 7 is fixedly connected to the output shaft of the gear box, and the input shaft of the gear box and the hub are connected through the wind wheel shaft, which finally drives the hub to rotate.

[0076] When the cranking is started, the oil distribution pipe of the hydraulic assembly simultaneously inputs the oil into the oil pipe group 20 and the oil inlet 44 of the sleeve 42. The oil in the oil inlet 44 enters the sleeve 42 and impacts the support ring 50 of the movable docking shaft 49 to make it move axially and separate from the generator input shaft. At the same time, the second dynamic seal ring 52 installed on the support ring 50 and the first dynamic seal ring 47 installed on the annular limit flange 45 can ensure that the oil will not leak when the oil pushes the movable docking shaft 49 to move in the sleeve 42. After the cranking is completed, the spring 5 The movable docking shaft 49 is pushed to dock with the generator input shaft. Meanwhile, the annular limiting flange 45 formed on the sleeve 42 can prevent the spring 55 from exerting excessive axial pressure on the generator input shaft due to excessive force. When the fan blades rotate, the connecting shaft 11 is driven to rotate through the gear box and the planetary transmission mechanism 9. Since the limiting convex strip 13 is inserted into the limiting slide groove 54, the movable docking shaft 49 can be driven to rotate synchronously. The movable docking shaft 49 is engaged with the one-way gear plate 53 to drive the generator input shaft to rotate.

[0077] The above invention only expresses one or several embodiments of the invention, and its description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the invention, which all belong to the protection scope of the invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.

Claims

1. A wind turbine multi-drive turning gear, characterized in that: include: Main body housing (1); A multi-head drive assembly (8) is located inside the main housing (1) and includes a planetary transmission mechanism (9) and a hydraulic rotation mechanism (18). The planetary transmission mechanism (9) includes a sun gear (17), a gear plate (10), and a plurality of reducers (14) evenly distributed along the circumferential direction between the sun gear (17) and the gear plate (10). The output end and the input end of each reducer (14) are respectively meshed with the sun gear (17) and the gear plate (10). The gear plate (10) is fixedly connected to the inner center of the main housing (1). One side of the sun gear (17) is coaxially fixedly connected to a gear extending out of the main housing (1). A flange connection plate (7) for connecting the fan blades, the flange connection plate (7) being axially connected to the shell wall of the main shell (1) at a fixed point, the hydraulic rotation mechanism (18) comprising a resistance paddle (23) and a plurality of oil pipe groups (20) for driving the resistance paddle (23) to rotate, a connecting shaft (11) extending from the main shell (1) being fixedly connected to the side of the gear plate (10) away from the sun gear (17), the resistance paddle (23) being fixedly sleeved on the outer end of the connecting shaft (11), all the oil pipe groups (20) being evenly distributed along the circumferential direction of the resistance paddle (23), and the oil pipe groups (20) being arranged at intervals along the axial direction of the resistance paddle (23); An active rotating assembly (31) is disposed directly below the multi-head driving assembly (8) and is drivingly connected to the outer ring of the gear plate (10); A separation mechanism (37) is disposed beside the active rotating component (31) and is used to drive the active rotating component (31) to engage or disengage from the gear plate (10); The shaft-connected clutch assembly (41) is arranged between the connecting shaft (11) and the generator input shaft, and comprises a movable docking shaft (49) capable of docking with the generator input shaft, and the other end of the movable docking shaft (49) is coaxially and movably inserted into the interior of the connecting shaft (11); The multi-head drive assembly (8) further comprises a hydraulic assembly for driving the hydraulic rotating mechanism (18) to work, wherein the hydraulic assembly is provided with an oil distribution pipe for distributing oil to the movable docking shaft (49), and oil is drained through the oil distribution pipe to the movable connecting shaft (11) to push the movable connecting shaft (11) to separate from the generator input shaft; The main housing (1) comprises a support frame (2) for fixing the reducer (14), a first bearing (3), a second bearing (6) and a support partition (5), the first bearing (3) is axially connected to the flange connection plate (7) and fixed to the shell wall of the main housing (1), the support partition (5) is fixedly arranged at the inner center of the main housing (1), the second bearing (6) is axially connected to the gear plate (10) and fixed to the support partition (5), and a plurality of the reducers (14) each comprise an input gear (15) and an output gear (16), the input gear (15) meshes with the inner gear ring of the gear plate (10), and the output gear (16) meshes with the outer gear ring of the sun gear (17); The active rotating assembly (31) comprises a worm wheel (32), a worm (33), a reduction motor (36), a driving gear (35) and a driven gear (34); the worm wheel (32) is sleeved on a connecting shaft (11) of a gear plate (10); the worm (33) is arranged horizontally below the worm wheel (32); the reduction motor (36) is arranged horizontally on one side of the bottom of the main housing (1); the driven gear (34) is sleeved on an end of the worm (33) close to the reduction motor (36); the driving gear (35) is sleeved on an output shaft of the reduction motor (36) and meshes with the driven gear (34); and the main housing (1) is formed with a first slide groove (4) for the worm (33) to translate laterally.

2. A wind turbine multi-drive turning gear according to claim 1, characterized in that: The hydraulic rotating mechanism (18) further comprises a hydraulic flow guide housing (19) for mounting an oil pipe assembly (20); the hydraulic flow guide housing (19) is fixedly arranged on a side of the main housing (1) close to the generator; The resistance paddle (23) comprises a central column (26) for fixing the sleeve connecting shaft (11), a paddle (27) for generating thrust, and a plurality of circular partition plates (24) for dividing the hydraulic guide housing (19) into a plurality of oil temporary storage chambers (25) along the axial direction, a groove (28) is formed at the outer edge of the paddle (27), and a U-shaped sealing ring (29) is arranged in the groove (28) and fits the inner side of the hydraulic guide housing (19); A plurality of the oil pipe groups (20) are arranged in one-to-one correspondence with the oil temporary storage chamber (25), each oil pipe group (20) comprises an oblique oil inlet pipe (22) and an oblique oil outlet pipe (21) having axes which have the same angle, the oblique oil inlet pipe (22) and the oblique oil outlet pipe (21) are arranged on the hydraulic guide housing (19) with their axes facing the top of the blade (27), and adjacent oil pipe groups (20) are arranged crosswise along the circumferential direction of the connecting shaft (11).

3. A wind turbine multi-drive turning gear according to claim 2, characterized in that: The shaft-connected clutch assembly (41) further comprises a sleeve (42), a third bearing (48) and a spring (55); two ends of the sleeve (42) are respectively connected to the generator input shaft and the connecting shaft (11) via the third bearing (48); an annular limiting flange (45) for limiting the position of the movable docking shaft (49) is formed on the inner wall of the sleeve (42); the spring (55) is sleeved on the movable docking shaft (49) and two ends of the spring (55) are respectively connected to the movable docking shaft (49) and the connecting shaft (11); and one-way toothed discs (53) are respectively formed at the docking position between the movable docking shaft (49) and the generator input shaft.

4. A wind turbine multi-drive turning gear according to claim 3, characterized in that: The inner wall of the sleeve (42) is formed with a cylindrical groove (43) for the movable docking shaft (49) to move and an oil inlet (44) for draining oil. The oil outlet of the oil inlet (44) is evenly distributed along the circumferential direction of the cylindrical groove (43). The annular limiting flange (45) is formed with a first embedded groove (46). A first dynamic sealing ring (47) is arranged in the first embedded groove (46) and fits the outer wall of the movable docking shaft (49). The outer wall of the movable docking shaft (49) is formed with a support ring (50) for fixing a spring (55). A second embedded groove (51) is formed at the outer edge of the support ring (50). A second dynamic sealing ring (52) is arranged in the second embedded groove (51) and fits the cylindrical groove (43).

5. A wind turbine multi-drive turning gear according to claim 4, characterized in that: The movable docking shaft (49) is inserted into the outer wall of the connecting shaft (11) to form a limiting sliding groove (54), and the inner wall of the connecting shaft (11) is formed with a limiting convex strip (13) corresponding to the limiting sliding groove (54).

6. A wind turbine multi-drive turning gear according to claim 5, characterized in that: The hydraulic rotating mechanism (18) further comprises a neck sealing ring (30), the neck sealing ring (30) being sleeved at the connection between the hydraulic flow guide housing (19) and the connecting shaft (11), and a limiting ring (12) is formed on the outer wall of the connecting shaft (11) and is in close contact with the neck sealing ring (30).

7. A wind turbine multi-drive turning gear according to claim 1, characterized in that: The separation mechanism (37) comprises a slide (40) for fixing the reduction motor (36), a short slide rail (38) for allowing the slide (40) to move horizontally, and an oil cylinder (39) for pushing the slide (40) to move horizontally. The short slide rail (38) is arranged on both sides of the main housing (1), and a push rod of the oil cylinder (39) is connected to the middle of the slide (40).

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