CN221762099U - An elastic support device for a wind turbine - Google Patents

Abstract

The utility model discloses an elastic support device for a wind turbine, including a fixed bottom shell and a pad, wherein the bottom of the fixed bottom shell is fixedly connected with a base, the top of the base is vertically fixedly connected with a support rod, the surface of the support rod is rotatably connected with a rotating arm, a mobile seat is arranged in the fixed bottom shell and located at the center of the annular distribution of the base, the surface of the mobile seat is provided with a sliding groove along its radial direction, a mobile vertical rod rotatably connected with the rotating arm is slidably connected in the sliding groove, a fixed cylinder rotatably connected with the rotating arm is also arranged in the fixed bottom shell, the center of the fixed cylinder is vertically slidably connected with a sliding support rod, the top of the sliding support rod is connected with a supporting wheel through a wheel seat, and a lifting seat is arranged on the top of the supporting wheel. The utility model relates to the technical field of wind power generation equipment. This elastic support device for a wind turbine can realize the adjustment of the height of the support, and is convenient for adjusting the preload force of the support, and can well absorb low-frequency vibrations.

Description

An elastic support device for a wind turbine

Technical Field

The utility model relates to the technical field of wind power generation equipment, in particular to an elastic supporting device for a wind turbine set.

Background Art

With the growing global demand for renewable energy, wind power generation, as an important component of clean energy, is developing rapidly in technology. In the design and construction of wind turbines, the performance of the support device directly affects the stability, safety and operating efficiency of the wind turbine. At present, the bearing seat in the wind turbine is directly connected to the frame, while the speed increaser and generator are connected to the bearing seat in a suspended manner. Therefore, elastic support is required to support the speed increaser and generator to ensure the stability of the overall structural installation, reduce the impact on the frame during the operation of the speed increaser, and play a role in protecting the unit. The existing elastic support device has an unadjustable support height, and the preload force of the support is inconvenient to adjust. At the same time, it is insensitive to low-frequency vibrations.

Utility Model Content

1. Technical issues to be resolved

In view of the deficiencies in the prior art, the utility model provides an elastic support device for a wind turbine set, which can adjust the height of the support, facilitate the adjustment of the preload force of the support, and can absorb low-frequency vibrations well.

(II) Technical solution

To achieve the above purpose, the utility model is implemented through the following technical solutions: an elastic support device for a wind turbine generator set, including a fixed bottom shell and a pad, the bottom of the fixed bottom shell is fixedly connected to a base, the base is provided with four and evenly distributed along a ring, the top of the base is vertically fixedly connected to a support rod, the surface of the support rod is rotatably connected to a rotating arm, each of the support rods is provided with two rotating arms on the surface and are arranged in parallel, a movable seat is provided in the fixed bottom shell and at the center of the annular distribution of the base, an adjustment device for driving the movable seat to move in a vertical direction is provided at the bottom of the fixed bottom shell, the movable seat is a cylindrical structure, the surface of the movable seat is provided with a sliding groove along its radial direction, a movable vertical rod is slidably connected in the sliding groove, one side of the movable vertical rod is fixedly connected to a first fixed seat, one end of the rotating arm is connected to the first The fixing seat is rotatably connected, and the fixing bottom shell is also provided with a fixing cylinder, the surface of the fixing cylinder is fixedly connected with a second fixing seat, and the other end of the rotating arm is rotatably connected with the second fixing seat, and the center of the fixing cylinder is vertically and slidably connected with a sliding support rod, the surface of the sliding support rod and a fixing ring is fixedly connected above the fixing cylinder, and a spring is provided between the bottom of the fixing ring and the top of the fixing cylinder, and a wheel seat is fixedly connected to the top of the sliding support rod, and the center of the wheel seat is rotatably connected with a supporting wheel, and a lifting seat is provided on the top of the supporting wheel, and a fixing hole is provided on the surface of the lifting seat, and a rubber pad is provided at the bottom of the fixing hole, and a guide rod is fixedly connected to the bottom of the pad and located at a position corresponding to the fixing hole, and a rubber ring is fixedly connected to the surface of the guide rod, and the rubber ring is inserted into the fixing hole, and the rubber ring is interference fit with the fixing hole.

Preferably, the adjusting device includes a screw, a rotating sleeve and a support seat, the screw is fixed at the bottom center of the movable seat, the cross-section of the rotating sleeve is an inverted T-shaped structure and is rotatably connected to the bottom of the fixed bottom shell, the screw is threadedly connected to the rotating sleeve, the surface of the rotating sleeve is fixedly connected to a worm gear, the support seat is fixed to one side of the bottom of the fixed bottom shell, the center of the support seat is rotatably connected to a worm, the worm is meshingly connected to the worm gear, and one end of the worm is fixedly connected to a hexagonal prism.

Preferably, a through hole adapted to the hexagonal prism is provided on the surface of the fixed bottom shell, and a thrust ball bearing is further provided between one side of the rotating sleeve and the fixed bottom shell.

Preferably, a sliding track is fixedly connected to the bottom of the lifting seat and above the supporting wheel, the surface of the supporting wheel is in contact with the slide groove of the sliding track, limiting grooves are arranged in the sliding track and on both sides of the slide groove, and rollers are also arranged at both ends of the supporting wheel rotating shaft, and the rollers are rollingly connected to the limiting grooves.

Preferably, the bottom end of the sliding support rod extends to the bottom of the fixed tube and is fixedly connected to a limiting block, the spring is a butterfly spring, and a support ring is fixedly connected to the surface of the sliding support rod and is located in the fixed tube.

Preferably, both ends of the movable vertical rod extend to the outside of the movable seat and are fixedly connected with sliding blocks, and the distance between the rotation center of the rotating arm surface support rod and the rotation center of the second fixed seat is 0.25-0.35 times the total length of the rotating arm.

Preferably, the bottom end of the guide rod contacts the top of the rubber pad.

Preferably, fixed bases are provided on both sides of the fixed bottom shell, the fixed bottom shell is installed on the top of the wind turbine frame, and the pad is used to support the speed increaser and the generator.

Preferably, a plurality of fixing holes are provided and are evenly distributed on the surface of the lifting seat, and the fixing holes are blind holes.

Preferably, a guide groove is provided on the side surface of the lifting seat, and a guide rib adapted to the guide groove is provided on the inner wall of the fixed bottom shell.

(III) Beneficial effects

The utility model provides an elastic support device for a wind turbine generator set, which has the following beneficial effects:

The movable seat is driven to move up and down through the adjusting device, thereby driving the rotating arm to rotate around the support rod, realizing the height adjustment of the fixed cylinder and adjusting the height of the support; through the design of the position of the support rod, the rotating arm is more labor-saving and convenient to adjust during rotation; at the same time, when the top of the pad contacts the speed increaser and the generator, the movable seat is continued to be adjusted to reduce the distance between the bottom of the fixed ring and the top of the fixed cylinder, thereby realizing the adjustment of the support preload; rubber pads are arranged in the lifting seat to support the pad, reducing the sensitivity to low-frequency vibration; the arranged rubber ring is interference fit with the fixing hole, and the relative displacement between the rubber ring and the fixing hole during the vibration process realizes energy absorption, improves the vibration isolation effect, and reduces the impact on the frame.

BRIEF DESCRIPTION OF THE DRAWINGS

Figure 1 is a perspective view of the overall structure of the utility model;

FIG2 is a schematic diagram of the internal structure of the overall structure of the utility model;

FIG3 is a perspective view of the connection between the rotating arm, the movable seat and the fixed cylinder of the utility model;

FIG4 is a cross-sectional view of the connection between the rotating arm, the movable seat and the fixed cylinder of the utility model;

Figure 5 is an enlarged view of point A in Figure 2 of the present utility model;

FIG6 is an enlarged view of point B in FIG3 of the present invention.

In the figure: 1-fixed bottom shell, 2-pad, 3-base, 4-support rod, 5-rotating arm, 6-movable seat, 7-sliding groove, 8-movable vertical rod, 9-first fixed seat, 10-fixed cylinder, 11-second fixed seat, 12-sliding support rod, 13-fixed ring, 14-spring, 15-wheel seat, 16-support wheel, 17-lifting seat, 18-fixing hole, 19-rubber pad, 20-guide rod, 21-rubber ring, 22-screw, 23-rotating sleeve, 24-support seat, 25-worm, 26-hexagonal prism, 27-worm wheel, 28-limiting groove, 29-roller, 30-limiting block, 31-sliding block, 32-fixed base, 33-guide groove, 34-support ring, 35-sliding track.

DETAILED DESCRIPTION

The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

Please refer to Figures 1 to 6. The utility model provides a technical solution: an elastic support device for a wind turbine, including a fixed bottom shell 1 and a pad 2. Fixed bases 32 are provided on both sides of the fixed bottom shell 1. The fixed bottom shell 1 is installed on the top of the wind turbine frame by bolts and through the fixed base 32. The pad 2 is used to support the speed increaser and the generator.

A base 3 is fixedly connected to the bottom of the fixed bottom shell 1, and four bases 3 are arranged and evenly distributed along a ring. A support rod 4 is vertically fixedly connected to the top of the base 3, and a rotating arm 5 is rotatably connected to the surface of the support rod 4. Two rotating arms 5 are arranged on the surface of each support rod 4 and are arranged in parallel. A movable seat 6 is arranged inside the fixed bottom shell 1 and at the center of the annular distribution of the base 3, and an adjusting device for driving the movable seat 6 to move in a vertical direction is arranged at the bottom of the fixed bottom shell 1. The specific adjustment device includes a screw 22, a rotating sleeve 23 and a support seat 24. The screw 22 is fixed at the bottom center of the movable seat 6. The cross-section of the rotating sleeve 23 is an inverted T-shaped structure and is rotatably connected to the bottom of the fixed bottom shell 1. The screw 22 is threadedly connected to the rotating sleeve 23. A worm gear 27 is fixedly connected to the surface of the rotating sleeve 23. The support seat 24 is fixed to one side of the bottom of the fixed bottom shell 1. A worm 25 is rotatably connected to the center of the support seat 24. The worm 25 is meshed with the worm gear 27. The rotation of the worm 25 drives the worm gear 27 to rotate, thereby realizing the rotation of the rotating sleeve 23, and the movable seat 6 is driven up and down by the screw 22.

One end of the worm 25 is fixedly connected to a hexagonal prism 26, and the surface of the fixed bottom shell 1 is provided with a through hole adapted to the hexagonal prism 26, so that the worm 25 can be easily rotated through the hexagonal prism 26, and a thrust ball bearing is also provided between one side of the rotating sleeve 23 and the fixed bottom shell 1, and the thrust ball bearing is used to improve the smoothness of the rotation of the rotating sleeve 23.

The movable seat 6 is a cylindrical structure, and the surface of the movable seat 6 is provided with a sliding groove 7 along its radial direction, and the sliding groove 7 is located at the corresponding position of the rotating arm 5. A movable vertical rod 8 is slidably connected in the sliding groove 7, and a first fixed seat 9 is fixedly connected to one side of the movable vertical rod 8. One end of the rotating arm 5 is rotatably connected to the first fixed seat 9. A fixed cylinder 10 is also provided in the fixed bottom shell 1, and a second fixed seat 11 is fixedly connected to the surface of the fixed cylinder 10. The other end of the rotating arm 5 is rotatably connected to the second fixed seat 11, and a sliding support rod 12 is vertically slidably connected to the center of the fixed cylinder 10. Since two parallel rotating arms 5 are provided, the upper and lower sides where the fixed cylinder 10 contacts the rotating arm 5 are at an equal distance from the corresponding rotation center during the rotation of the rotating arm 5 around the support rod 4. Since the support rod 4 remains in a vertical state, it is ensured that the fixed cylinder 10 can always remain in a vertical state, thereby realizing vertical support for the sliding support rod 12. A fixing ring 13 is fixedly connected to the surface of the sliding support rod 12 and located above the fixed cylinder 10. A spring 14 is arranged between the bottom of the fixing ring 13 and the top of the fixed cylinder 10. The arrangement of the spring 14 realizes elastic support between the sliding support rod 12 and the fixed cylinder 10. In order to withstand large loads, the spring 14 adopts a butterfly spring, and a plurality of butterfly springs are arranged in series along the length direction of the sliding support rod 12. The bottom end of the sliding support rod 12 extends to the bottom of the fixed cylinder 10 and is fixedly connected to a limiting block 30 to limit the sliding support rod 12. A supporting ring 34 is fixedly connected to the surface of the sliding support rod 12 and located inside the fixed cylinder 10. When the spring 14 is fully compressed, the supporting ring 34 contacts the bottom of the inner wall of the fixed cylinder 10 to realize rigid support and ensure the stability of the speed increaser and the generator.

The top end of the sliding support rod 12 is fixedly connected to a wheel seat 15, and the center of the wheel seat 15 is rotatably connected to a support wheel 16. A lifting seat 17 is provided on the top of the support wheel 16. When the rotating arm 5 is in a horizontal state, the horizontal distance between the moving vertical rod 8 and the support rod 4 and the horizontal distance between the fixed cylinder 10 and the support rod 4 reach a maximum. When the rotating arm 5 rotates from a horizontal state, the horizontal distance between the moving vertical rod 8 and the support rod 4 and the horizontal distance between the fixed cylinder 10 and the support rod 4 are reduced at the same time. The support wheel 16 is provided to reduce the friction between the top end of the sliding support rod 12 and the bottom of the lifting seat 17 when the fixed cylinder 10 undergoes horizontal displacement.

The surface of the lifting seat 17 is provided with fixing holes 18, and there are multiple fixing holes 18 evenly distributed on the surface of the lifting seat 17. The fixing holes 18 are blind holes, and the bottom of the fixing holes 18 is provided with rubber pads 19. The bottom of the pad 2 and the position corresponding to the fixing holes 18 are fixedly connected with a guide rod 20, and the bottom end of the guide rod 20 contacts the top of the rubber pad 19. The lifting seat 17 uses the rubber pad 19 and the guide rod 20 to support the pad 2. Since the stiffness of the rubber pad 19 is less than the stiffness of the spring 14, it can absorb low-frequency vibrations. When the flexural deformation of the speed increaser and the generator is too large, the pad 2 is subjected to greater pressure, and the rubber pad 19 is deformed under the greater pressure of the guide rod 20, causing the pad 2 to move downward and the bottom of the pad 2 directly contacts the top surface of the lifting seat 17 to ensure the support effect.

A rubber ring 21 is fixedly connected to the surface of the guide rod 20. The rubber ring 21 is inserted into the fixing hole 18. The rubber ring 21 and the fixing hole 18 have an interference fit. Through the interference fit between the rubber ring 21 and the fixing hole 18, the relative displacement between the rubber ring 21 and the fixing hole 18 during vibration achieves energy absorption, thereby improving the vibration isolation effect. At the same time, it can also achieve lateral shock absorption and improve the elastic support effect.

In order to ensure the connection between the lifting seat 17 and the support wheel 16, a sliding track 35 is fixedly connected to the bottom of the lifting seat 17 and located above the support wheel 16. The surface of the support wheel 16 is in contact with the slide groove of the sliding track 35. Limiting grooves 28 are arranged in the sliding track 35 and on both sides of the slide groove. Rollers 29 are also arranged at both ends of the rotating shaft of the support wheel 16. The rollers 29 are rollingly connected with the limiting grooves 28. The connection between the lifting seat 17 and the support wheel 16 is realized through the rollers 29 and the limiting grooves 28.

Both ends of the movable vertical rod 8 extend to the outside of the movable seat 6 and are fixedly connected with a sliding block 31. The side of the sliding block 31 close to the movable seat 6 is slidably connected to the surface of the movable seat 6, thereby preventing the movable vertical rod 8 from tilting and keeping it in a vertical state, thereby ensuring the stability of the movable vertical rod 8.

The distance between the rotation center of the support rod 4 on the surface of the rotating arm 5 and the rotation center of the second fixed seat 11 is 0.25-0.35 times the total length of the rotating arm 5, forming a labor-saving lever and facilitating the adjustment of the movable seat 6.

A guide groove 33 is provided on the side of the lifting seat 17 , and a guide rib matched with the guide groove 33 is provided on the inner wall of the fixed bottom shell 1 , so as to avoid relative rotation between the lifting seat 17 and the fixed bottom shell 1 .

During installation, the fixed bottom shell 1 is installed on the top of the wind turbine frame and the pad 2 is located below the speed increaser and the generator. The fixed bottom shell 1 is fixed with bolts, and the hexagonal prism 26 is rotated with a tool to realize the rotation of the worm 25, thereby driving the worm wheel 27 to rotate. Under the rotation of the rotating sleeve 23, the screw 22 is used to drive the movable seat 6 to move downward, and the rotating arm 5 rotates. The fixed cylinders 10 on both sides move upward in the vertical direction, thereby pushing the lifting seat 17 to move upward, driving the pad 2 to move upward, until the top of the pad 2 is close to the bottom of the speed increaser or the generator, and support is achieved; when increasing the supporting force, continue to operate the hexagonal prism 26, so that the movable seat 6 moves downward, and the fixed cylinders 10 on both sides continue to move upward in the vertical direction. Since the position of the pad 2 is fixed under the obstruction of the speed increaser or the generator, the total deformation of the rubber pad 19 and the spring 14 is equal to the displacement of the fixed cylinder 10 moving upward, and at the same time, the supporting force of the pad 2 on the speed increaser or the generator is also increased.

It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims (10)

1. An elastic supporting device of a wind turbine generator set is characterized in that: the device comprises a fixed bottom shell (1) and a base plate (2), wherein the bottom inside the fixed bottom shell (1) is fixedly connected with a base (3), the base (3) is provided with four adjusting devices which are uniformly distributed along the shape of a circle, the top of the base (3) is vertically and fixedly connected with a supporting rod (4), the surfaces of the supporting rods (4) are rotatably connected with rotating arms (5), each surface of the supporting rod (4) is provided with two rotating arms (5) and is arranged in parallel, the center of the circular distribution in the fixed bottom shell (1) and positioned in the base (3) is provided with a moving seat (6), the bottom inside the fixed bottom shell (1) is provided with a regulating device which drives the moving seat (6) to move along the vertical direction, the moving seat (6) is in a cylindrical structure, the surface of the moving seat (6) is provided with a sliding groove (7) along the radial direction of the moving seat, one side of the moving vertical rod (8) is fixedly connected with a first fixed seat (9), one end of the rotating arm (5) is rotatably connected with the first fixed seat (9), the other end of the rotating arm (5) is rotatably connected with the first bottom shell (9), the other end of the rotating seat (10) is fixedly connected with a second fixed seat (11), the vertical sliding connection in center of fixed section of thick bamboo (10) has slip bracing piece (12), the surface of slip bracing piece (12) just is located the top fixedly connected with solid fixed ring (13) of fixed section of thick bamboo (10), be provided with spring (14) between the bottom of solid fixed ring (13) and the top of fixed section of thick bamboo (10), the top fixedly connected with wheel seat (15) of slip bracing piece (12), the center rotation of wheel seat (15) is connected with supporting wheel (16), the top of supporting wheel (16) is provided with elevating seat (17), the surface of elevating seat (17) is provided with fixed orifices (18), the bottom of fixed orifices (18) is provided with rubber cushion (19), the bottom of backing plate (2) just is located fixed orifices (18) just to the position fixedly connected with guide bar (20), the surface fixedly connected with rubber ring (21) of guide bar (20), in rubber ring (21) inserts fixed orifices (18), rubber ring (21) and fixed orifices (18) interference fit.

2. The elastic supporting device of a wind turbine generator set according to claim 1, wherein: the adjusting device comprises a screw (22), a rotating sleeve (23) and a supporting seat (24), wherein the screw (22) is fixed at the bottom center of the movable seat (6), the section of the rotating sleeve (23) is of an inverted T-shaped structure and is rotationally connected with the bottom of the fixed bottom shell (1), the screw (22) is in threaded connection with the rotating sleeve (23), a worm wheel (27) is fixedly connected with the surface of the rotating sleeve (23), the supporting seat (24) is fixed at one side in the fixed bottom shell (1), a worm (25) is rotationally connected with the center of the supporting seat (24), the worm (25) is meshed with the worm wheel (27), and one end of the worm (25) is fixedly connected with a hexagonal prism (26).

3. The elastic supporting device of a wind turbine generator according to claim 2, wherein: the surface of the fixed bottom shell (1) is provided with a through hole matched with the hexagonal prism (26), and a thrust ball bearing is further arranged between one side of the rotating sleeve (23) and the fixed bottom shell (1).

4. The elastic supporting device of a wind turbine generator set according to claim 1, wherein: the lifting seat is characterized in that a sliding rail (35) is fixedly connected to the bottom of the lifting seat (17) and located above the supporting wheel (16), the surface of the supporting wheel (16) is in contact with a sliding groove of the sliding rail (35), limiting grooves (28) are formed in the sliding rail (35) and located on two sides of the sliding groove, rollers (29) are further arranged at two ends of a rotating shaft of the supporting wheel (16), and the rollers (29) are in rolling connection with the limiting grooves (28).

5. The elastic supporting device of a wind turbine generator set according to claim 1, wherein: the bottom of the sliding support rod (12) extends to the lower part of the fixed cylinder (10) and is fixedly connected with a limiting block (30), the spring (14) is a belleville spring, and the surface of the sliding support rod (12) is fixedly connected with a support ring (34) in the fixed cylinder (10).

6. The elastic supporting device of a wind turbine generator set according to claim 1, wherein: the two ends of the movable vertical rod (8) extend to the outside of the movable seat (6) and are fixedly connected with sliding blocks (31), and the distance between the rotation center of the surface supporting rod (4) of the rotating arm (5) and the rotation center of the second fixed seat (11) is 0.25-0.35 times of the total length of the rotating arm (5).

7. The elastic supporting device of a wind turbine generator set according to claim 1, wherein: the bottom end of the guide rod (20) is contacted with the top of the rubber cushion block (19).

8. The elastic supporting device of a wind turbine generator set according to claim 1, wherein: the two sides of the fixed bottom shell (1) are provided with fixed bases (32), the fixed bottom shell (1) is arranged at the top of the wind turbine generator rack, and the base plate (2) is used for supporting a speed increaser and a generator.

9. The elastic supporting device of a wind turbine generator set according to claim 1, wherein: the fixing holes (18) are formed in the surfaces of the lifting seats (17) and are uniformly distributed, and the fixing holes (18) are blind holes.

10. The elastic supporting device of a wind turbine generator set according to claim 1, wherein: the side of lifting seat (17) is provided with guide groove (33), the inner wall of fixed drain pan (1) is provided with the direction muscle with guide groove (33) adaptation.