LU502335B1

LU502335B1 - Assembly tooling for impeller of wind turbine

Info

Publication number: LU502335B1
Application number: LU502335A
Authority: LU
Inventors: Yuliang Zhang; Yi Liu; Huanyu Wu; Shiying Zhang; Biao Liang; Xiangwei Wang
Original assignee: Huaneng Renewables Corporation Ltd Hebei Branch
Priority date: 2022-04-19
Filing date: 2022-06-22
Publication date: 2022-12-22
Also published as: CN216842049U; IES87382Y1; IE20220101U1

Abstract

The present disclosure relates to the field of assembly equipment for a wind turbine and provides an assembly tooling for an impeller of a wind turbine, including a first bottom plate fixed horizontally. Two parallel track slots are formed on the first bottom plate, a second bottom plate is slidably connected in the track slots, a top of the second bottom plate is connected to a rotating part, a third bottom plate is fixedly connected at a top of the rotating part, tracks are installed on the third bottom plate, a height-adjustable bearing part is slidably arranged on the tracks, holders for holding and lifting a blade are arranged at a top of the bearing part, shapes of the holders are matched with holding-and-lifting positions of the blade, and vertical projections of initial positions of the tracks are perpendicular to vertical projections of the track slots. Compared with the traditional assembly method, the assembly tooling for the impeller of the wind turbine provided by the present disclosure can be simply operated, is convenient to assemble the impeller, reduce a requirement for the wind conditions, and greatly save assembly time to make a sufficient window period for the integral hoisting assembly of the impeller.

Description

BL-5513 LU502335

ASSEMBLY TOOLING FOR IMPELLER OF WIND TURBINE

TECHNICAL FIELD The present disclosure relates to the technical field of the assembly equipment for a wind turbine, in particular to an assembly tooling for an impeller of a wind turbine.

BACKGROUND The blades for wind power generation are referred to as wind power blades. Wind power blades are the key components to capture wind energy and important parts to convert the wind energy into electrical energy in wind power generation. Specifically, the impeller composed of a wind power blade and a hub is a mechanism that can capture the wind energy and convert the wind energy into mechanical energy. Meanwhile, the blade is also the main bearing component for loading wind. Since the wind turbine tends to be large-scale, the height of the center of gravity of the hub of the spindle generator increases continuously, and the length and weight of the blade also increase continuously. Therefore, the installation, operation and maintenance of blades has become a major problem.

Currently, the conventional assembly method for the blade and the hub is as follows: the main hoisting lifts the blade, the auxiliary hoisting performs cooperation, and the workers assist to pull the hawser; and the workers for the hoisting belt of the main hoisting pulls the hoist to adjust the docking angle. However, at present, this type of assembly method has a high requirement for wind conditions, and it is difficult to assemble or even unable to be assembled when the wind speed is high. Additionally, it is difficult to assemble and coordinate each point, and the whole assembly process is time-consuming and laborious. During the process of a long assembly cycle, the deterioration of wind conditions may cause the assembly to pause, and the assembly occupies the downwind window period, so that the overall hoisting of the hub is delayed to the next window period, making it difficult to control the hoisting progress.

SUMMARY The purpose of the present disclosure is to provide an assembly tooling for an impeller of a wind turbine to solve the problems existing in the prior art. Compared with the traditional assembly method, the present disclosure can be simply operated, is convenient to assemble the impeller, reduce a requirement for the wind conditions, and greatly save assembly time to make a sufficient window period for the integral hoisting assembly of the impeller.

BL-5513 LU502335 To achieve the above purposes, solutions provided by the present disclosure is as follows: The present disclosure provides an assembly tooling for an impeller of a wind turbine, the assembly tooling includes a first bottom plate fixed horizontally, two parallel track slots are formed on the first bottom plate, a second bottom plate is slidably connected in the track slots, atop of the second bottom plate is connected to a rotating part, a third bottom plate is fixedly connected at a top of the rotating part, tracks are installed on the third bottom plate, a height- adjustable bearing part is slidably arranged on the tracks, holders for holding and lifting a blade are arranged at a top of the bearing part, shapes of the holders are matched with holding-and- lifting positions of the blade, and vertical projections of initial positions of the tracks are perpendicular to vertical projections of the track slots, such that the holders can fix and clamp the blade to prevent the blade from being affected by the wind conditions and make the blade stable and reliable in the process of installation, thereby avoiding the shaking and skewing caused by the strong wind. The perpendicular arrangement between the tracks and the track slots can realize the horizontal movement, vertical movement of the blade; the rotating part can rotate the blade to change the angle; and the bearing part can lift the blade to a suitable height as needed.

Optionally, four first baffles are symmetrically provided between the two track slots, and inner sides of the first baffles are fixedly connected to first horizontal hydraulic cylinders, where telescopic directions of two first horizontal hydraulic cylinders adjacent to one ends of the track slots are opposite to telescopic directions of two first horizontal hydraulic cylinders adjacent to the other ends of the track slots; and an end of the first horizontal hydraulic cylinder is fixedly connected to an outer side of the second bottom plate.

Optionally, a cross section of the second bottom plate is a circular structure; two steel columns arranged horizontally and symmetrically are fixed at a bottom of the second bottom plate, the steel columns are sleeved with first bearings, and outer rings of the first bearings are rollably arranged in the track slots.

Optionally, the rotating part includes a cylinder wall fixed on the second bottom plate, a second bearing arranged horizontally is fixedly arranged at a top of the cylinder wall, a bearing outer ring of the second bearing is fixedly connected to the cylinder wall, a bearing inner ring of the second bearing is fixedly connected to a conical wall, and a top of the conical wall is fixedly connected to the third bottom plate.

Optionally, an outer wall of the bearing outer ring of the second bearing is fixedly provided with an outer gear ring; an outer side of the conical wall is fixedly connected to fixed seats,

BL-5513 LU502335 ends of the fixed seats are fixedly installed with reducers, an input end at a top of the reducer is drivingly connected to a motor, and an output end at a bottom of the reducer is connected to a gear, where the gear engages with the outer gear ring.

Optionally, I-beams are fixedly provided on the third bottom plate, the tracks are fixedly installed above the I-beams, and a bottom of the bearing part is movably arranged in the tracks; the bearing part includes a plurality of first vertical hydraulic cylinders, the plurality of first vertical hydraulic cylinders are fixedly connected to each other by a connecting rod, and tops ofthe first vertical hydraulic cylinders are fixedly connected to the holders, respectively; second baffles are fixedly arranged at two ends of each of the tracks, and inner sides of the second baffles are fixedly connected to second horizontal hydraulic cylinders, where telescopic directions of two second horizontal hydraulic cylinders adjacent to one ends of the tracks are opposite to telescopic directions of two second horizontal hydraulic cylinders adjacent to the other ends of the tracks; and an end of the second horizontal hydraulic cylinder is fixedly connected to one end of the connecting rod.

Optionally, the bottom of the bearing part is movably arranged on the tracks through third bearings; extension parts are respectively arranged on both sides of the connecting rod, the extension parts are fixedly connected to inner rings of the third bearings, and outer rings of the third bearings are rollably arranged in the tracks.

Optionally, reinforcement ribs are fixedly arranged between the cylinder wall and the second bottom plate; and reinforcement ribs are fixedly arranged between the conical wall and the third bottom plate.

Optionally, the first bottom plate is a square or circular structure; and the end of the first horizontal hydraulic cylinder is fixedly connected to the outer side of the second bottom plate through a hinged push arm.

Optionally, the outer side of the conical wall is fixedly and symmetrically installed with at least two reducers through the fixed seats, herein the number of the reducers is not be limited, and two, four, six or even more reducers can be adopted and symmetrically arranged; the input end at the top of each of the reducers is drivingly connected to the motor, and the output end at the bottom of each of the reducers is connected to the gear, where the gear engages with the outer gear ring.

Compared with the prior art, advantages of the present disclosure are as follows: When the assembly tooling for the impeller of the wind turbine provided by the present disclosure is used, the blade is fixed and clamped in the holders with top openings to make the

BL-5513 LU502335 blade more stable and firmer, so that the assembly can also be accomplished well while the wind speed 1s high and it is less difficult to assemble and coordinate with each point. By using tracks, track slots, a rotating part and other structures, the direction, angle and height of the blade can be adjusted in the process of installation with less time and effort, and the assembly will not be stopped due to the deterioration of wind conditions in the process of a long assembly cycle, thereby saving assembly time and being convenient for the hoisting assembly.

BRIEF DESCRIPTION OF THE DRAWINGS To more clearly illustrate the technical solutions of the embodiment of the present disclosure or the prior art, the drawings used in the embodiment are briefly described as follows. Obviously, the drawings described below are only some embodiments of the present disclosure, and for those having ordinary skill in the art, other drawings can be obtained according to these drawings without creative work. FIG. 1 is a schematic diagram of a working state of an assembly tooling for an impeller of a wind turbine according to the present disclosure. FIG. 2 is a schematic diagram of an overall structure of the assembly tooling for the impeller of the wind turbine according to the present disclosure. FIG. 3 is a schematic diagram of a structure of a first bottom plate according to the present disclosure. FIG. 4 is a top view of the first bottom plate according to the present disclosure. FIG. 5 is a structural schematic diagram of a connection between a second bottom plate and a rotating part according to the present disclosure. FIG. 6 is a top view of the second bottom plate according to the present disclosure. FIG. 7 is a structural schematic diagram of the rotating part according to the present disclosure. FIG. 8 is a structural schematic diagram of a connection between the rotating part and a third bottom plate according to the present disclosure. FIG. 9 is a structural schematic diagram of a connection between the third bottom plate and a bearing part according to the present disclosure. FIG. 10 is a structural side view of a connection between the third bottom plate and the bearing part according to the present disclosure. Reference numerals: 1-first bottom plate; 2-track slot; 3-first baffle; 4-second bottom plate; S-reinforcement rib; 6-cylinder wall; 7-outer gear ring; 8-bearing outer ring of second bearing;

BL-5513 LU502335 9-bearing inner ring of second bearing; 10-first bearing; 11-steel column; 12-motor; 13-reducer; 14-gear; 15-first horizontal hydraulic cylinder; 16-conical wall; 17-fixed seat; 18-I-beam; 19- track; 20-second horizontal hydraulic cylinder; 21-connecting rod; 22-first vertical hydraulic cylinder; 23-holder; 24-second baffle; 25-third bearing; 26-third bottom plate; 27-blade; 28- 5 hub; and 29-push arm.

DETAILED DESCRIPTION OF THE EMBODIMENTS Combined with the drawings in an embodiment of the present disclosure, the technical solution in the embodiment of the present disclosure is clearly and completely described as follows. Obviously, the described embodiment is only part of the embodiment of the present disclosure and is not all embodiments. Based on the embodiment of the present disclosure, all other embodiments obtained by the ordinary skilled in the art without creative work belong to the protection scope of the present disclosure.

The purpose of the present disclosure is to provide an assembly tooling for an impeller of a wind turbine to solve the problems existing in the prior art. Compared with the traditional assembly method, the present disclosure can be simply operated, is convenient to assemble the impeller, reduce a requirement for the wind conditions, and greatly save assembly time to make a sufficient window period for the integral hoisting assembly of the impeller.

To make the above purposes, characteristics and advantages of the present disclosure more obvious and easier to understand, the present disclosure is further explained in detail in combination with the drawings and the embodiment.

As shown in FIGS. 1, 2, 3, 4, 5, 6, 7, 8, 9 and 10, the present disclosure provides an assembly tooling for an impeller of a wind turbine. The assembly tooling includes the first bottom plate 1 in a square or circular structure fixed horizontally, the two parallel track slots 2 are formed on the first bottom plate 1, the second bottom plate 4 is slidably connected in the track slots 2, and the top of the second bottom plate 4 is connected to a rotating part. The third bottom plate 26 is fixedly connected at the top of the rotating part, the tracks 19 are installed on the third bottom plate 26, a height-adjustable bearing part is slidably arranged on the tracks 19, and the holders 23 for holding and lifting the blade are arranged at the top of the bearing part. The shapes of the holders 23 are matched with the holding-and-lifting positions of the blade 27 to facilitate fixing and clamping the blade 27 and to prevent the blade 27 from shaking during the installation with the hub 28. The vertical projections of the initial positions of the tracks 19 are perpendicular to the vertical projections of the track slots 2, so that the holders 23

BL-5513 LU502335 can fix and clamp the blade 27 to prevent the blade 27 from being affected by the wind conditions and make the blade 27 stable and reliable in the process of installation, thereby avoiding the shaking and skewing caused by the strong wind.

The perpendicular arrangement between the tracks and the track slots can realize the horizontal movement, vertical movement, rotation and adjustment of the holding-and-lifting height, of the blade 27, which is convenient for the assembly of the blade 27 and the hub 28. Compared with the traditional rope hoisting method, the process of installation of the present disclosure is more stable and reliable, and saves a lot of time.

Further preferably, in the present disclosure, the four first baffles 3 are symmetrically provided between the two track slots 2, and the inner sides of the first baffles 3 are fixedly connected to the first horizontal hydraulic cylinders 15. The telescopic directions of the two first horizontal hydraulic cylinders 15 adjacent to one ends of the track slots 2 are opposite to the telescopic directions of the two first horizontal hydraulic cylinders 15 adjacent to the other ends of the track slots 2. An end ofthe first horizontal hydraulic cylinder 15 is fixedly connected to the outer side of the second bottom plate 4 through the hinged push arm 29, and the first horizontal hydraulic cylinders 15 are based on the first baffles 3 to realize the horizontal movement of the second bottom plate 4. The cross section of the second bottom plate 4 is a circular structure.

The two steel columns 11 arranged horizontally and symmetrically are fixed at the bottom of the second bottom plate 4 to realize reinforcement and prevent deformation.

The steel columns 11 are sleeved with the first bearings 10, and the outer rings of the first bearings 10 are rollably arranged in the track slots 2. The installation principle of the first bearings 10 is that the gap between the second bottom plate 4 and the first bottom plate 1 satisfies the deformation redundancy, and the first bearings 10 are used to be equivalent to rolling wheels to reduce the driving resistances of the first horizontal hydraulic cylinders 15. The rotating part includes the cylinder wall 6 fixed on the second bottom plate 4, the reinforcement ribs 5 are fixedly arranged between the cylinder wall 6 with a cylindric structure and the second bottom plate 4, and a second bearing arranged horizontally is fixedly arranged at the top of the cylinder wall 6. The bearing outer ring 8 of the second bearing is fixedly connected to the cylinder wall 6, the bearing inner ring 9 of the second bearing is fixedly connected to the conical wall 16, and the top of the conical wall 16 is fixedly connected to the third bottom plate 26. Additionally, the reinforcement ribs 5 are fixedly arranged between the conical wall 16 with an upper end opening larger than a lower end opening and the third bottom plate 26. The outer wall of the bearing outer ring 8 of the second bearing is fixedly provided

BL-5513 LU502335 with the outer gear ring 7. The outer side of the conical wall 16 is fixedly installed with the reducers 13, namely a speed-reducing gearbox, through the fixed seats 17. The input end at the top of the reducer 13 1s drivingly connected to the motor 12, and the output end at the bottom of the reducer 13 is connected to the gear 14. The gear 14 engages with the outer gear ring 7. During operation, the motor 12 drives the reducer 13, the reducer 13 drives the gear 14 to rotate, and the gear 14 engages with the outer gear ring 7, so the gear 14 rotates relative to the outer gear ring 7, that 1s, the gear 14 rolls along the outer gear ring 7. The outer gear ring 7 1s fixedly connected to the bearing outer ring 8 of the second bearing; the gear 14, the reducer 13 and others are fixed on the conical wall 16; the conical wall 16 is fixedly connected to the bearing inner ring 9 of the second bearing, so the relative rotation between the bearing inner ring 9 and the bearing outer ring 8 can be realized finally, and then the relative rotation between the second bottom plate and the third bottom plate can be realized. FIG. 7 1s one of the arrangement forms of the reducer of the present disclosure. In FIG. 7, a total of six reducers 13 are symmetrically arranged on the outer side of the bearing outer ring 8 of the second bearing, thereby improving the rotation efficiency. In the present disclosure, there is no specific limit on the specific structural number ofthe reducers 13, and two, four, six or even more reducers 13 can be adopted and flexibly arranged as needed. The I-beams 18 are fixedly provided on the third bottom plate 26, the tracks 19 are fixedly installed above the I-beams 18, and the bottom of the bearing part is movably arranged in the tracks 19. The bearing part includes a plurality of first vertical hydraulic cylinders 22. The plurality of first vertical hydraulic cylinders 22 are fixedly connected to each other by the connecting rod 21, and the tops of the first vertical hydraulic cylinders 22 are fixedly connected to the holders 23, respectively, which can hold and lift the blade 27 to a suitable height as needed, so that the flange surface of blade root is aligned with the bearing flange surface in the hub 28. The second baffles 24 are fixedly arranged at two ends of each of the tracks 19, and the inner sides of the second baffles 24 are fixedly connected to the second horizontal hydraulic cylinders

20. The telescopic directions of the two second horizontal hydraulic cylinders 20 adjacent to one ends of the tracks 19 are opposite to the telescopic directions of the two second horizontal hydraulic cylinders 20 adjacent to the other ends of the tracks 19, and an end of the second horizontal hydraulic cylinder 20 is fixedly connected to one end of the connecting rod 21. The bottom of the bearing part is movably arranged on the tracks 19 through the third bearings 25. Extension parts are respectively arranged on both sides of the connecting rod 21, and the extension parts are fixedly connected to the inner rings of the third bearings 25. The outer rings

BL-5513 LU502335 of the third bearings 25 are rollably arranged in the tracks 19, and are equivalent to rolling wheels to reduce the resistance of the bearing part moving in the tracks 19.

In the description of the present disclosure, it is necessary to note that the orientation or position relations indicated by the terminologies "center", "top", "bottom", "left", "right", "vertical", "horizontal", "inside/inner" and "outside/outer" are based on the orientation or position relationship shown in the drawings, only to facilitate the description of the present disclosure and simplify the description, without indicating or implying that the device or element referred must have a specific orientation and be constructed and operated in the specific orientation. Therefore, they cannot be understood as a limitation to the present disclosure. In addition, the terminologies "first" and "second" are used only for descriptive purposes and cannot be understood to indicate or imply relative importance.

In the present disclosure, a specific example is applied to explain the principle and implementation of the present disclosure, and the description of the above embodiment is only used to help understand the method and the core idea of the present disclosure; meanwhile, according to the idea of the present disclosure, those having ordinary skill in the art may modify the embodiment and application scope. Therefore, the contents of this specification should not be understood as limitations on the present disclosure.

Claims

BL-5513 LU502335 CLAIMS

1. An assembly tooling for an impeller of a wind turbine, comprising a first bottom plate fixed horizontally, two parallel track slots are formed on the first bottom plate, a second bottom plate is slidably connected in the track slots, a top of the second bottom plate is connected to a rotating part, a third bottom plate is fixedly connected at a top of the rotating part, tracks are installed on the third bottom plate, a height-adjustable bearing part is slidably arranged on the tracks, holders for holding and lifting a blade are arranged at a top of the bearing part, shapes of the holders are matched with holding-and-lifting positions of the blade, and vertical projections of initial positions of the tracks are perpendicular to vertical projections of the track slots.

2. The assembly tooling for the impeller of the wind turbine according to claim 1, wherein four first baffles are symmetrically provided between the two track slots, and inner sides of the first baffles are fixedly connected to first horizontal hydraulic cylinders, wherein telescopic directions of two first horizontal hydraulic cylinders adjacent to one ends of the track slots are opposite to telescopic directions of two first horizontal hydraulic cylinders adjacent to the other ends of the track slots; and an end of the first horizontal hydraulic cylinder is fixedly connected to an outer side of the second bottom plate.

3. The assembly tooling for the impeller of the wind turbine according to claim 1, wherein a cross section of the second bottom plate is a circular structure; two steel columns arranged horizontally and symmetrically are fixed at a bottom of the second bottom plate, the steel columns are sleeved with first bearings, and outer rings of the first bearings are rollably arranged in the track slots.

4. The assembly tooling for the impeller of the wind turbine according to claim 1, wherein the rotating part comprises a cylinder wall fixed on the second bottom plate, a second bearing arranged horizontally is fixedly arranged at a top of the cylinder wall, a bearing outer ring of the second bearing is fixedly connected to the cylinder wall, a bearing inner ring of the second bearing is fixedly connected to a conical wall, and a top of the conical wall is fixedly connected to the third bottom plate.

BL-5513 LU502335

5. The assembly tooling for the impeller of the wind turbine according to claim 4, wherein an outer wall of the bearing outer ring of the second bearing is fixedly provided with an outer gear ring; an outer side of the conical wall is fixedly installed with reducers through fixed seats, an input end at a top of the reducer is drivingly connected to a motor, and an output end at a bottom of the reducer is connected to a gear, wherein the gear engages with the outer gear ring.

6. The assembly tooling for the impeller of the wind turbine according to claim 1, wherein I-beams are fixedly provided on the third bottom plate, the tracks are fixedly installed above the I-beams, and a bottom of the bearing part is movably arranged in the tracks; the bearing part comprises a plurality of first vertical hydraulic cylinders, the plurality of first vertical hydraulic cylinders are fixedly connected to each other by a connecting rod, and tops of the first vertical hydraulic cylinders are fixedly connected to the holders, respectively; second baffles are fixedly arranged at two ends of each of the tracks, and inner sides of the second baffles are fixedly connected to second horizontal hydraulic cylinders, wherein telescopic directions of two second horizontal hydraulic cylinders adjacent to one ends of the tracks are opposite to telescopic directions of two second horizontal hydraulic cylinders adjacent to the other ends of the tracks; and an end of the second horizontal hydraulic cylinder is fixedly connected to one end of the connecting rod.

7. The assembly tooling for the impeller of the wind turbine according to claim 6, wherein the bottom of the bearing part is movably arranged on the tracks through third bearings; extension parts are respectively arranged on both sides of the connecting rod, the extension parts are fixedly connected to inner rings of the third bearings, and outer rings of the third bearings are rollably arranged in the tracks.

8. The assembly tooling for the impeller of the wind turbine according to claim 4, wherein reinforcement ribs are fixedly arranged between the cylinder wall and the second bottom plate; and reinforcement ribs are fixedly arranged between the conical wall and the third bottom plate.

9. The assembly tooling for the impeller of the wind turbine according to claim 2, wherein the first bottom plate is a square or circular structure; and the end of the first horizontal hydraulic cylinder is fixedly connected to the outer side of the second bottom plate through a hinged push arm.

BL-5513 LU502335

10. The assembly tooling for the impeller ofthe wind turbine according to claim 5, wherein the outer side of the conical wall is fixedly and symmetrically installed with at least two reducers through the fixed seats, the input end at the top of each of the reducers is drivingly connected to the motor, and the output end at the bottom of each of the reducers is connected to the gear, wherein the gear engages with the outer gear ring.