Blade deflection adjusting assembly for wind power generation equipment

Abstract

The utility model provides a blade deflection adjusting assembly for wind power generation equipment, which belongs to the technical field of wind power generation and comprises a support frame, a plurality of lead screws and a driving mechanism. The supporting frame is provided with an adjusting space for the driving disc to slide. The lead screws are distributed in the circumferential direction of the supporting frame at intervals, and each lead screw is rotationally matched with the supporting frame. The driving disc is provided with threaded holes which are in one-to-one correspondence with the lead screws and are in threaded fit with the lead screws. The driving mechanism is arranged on the supporting frame; the driving mechanism can simultaneously drive the plurality of lead screws to rotate around respective axes, so that the driving disc slides in the adjusting space; through the multi-lead-screw driving mode, the balance effect can be achieved, abrasion of screw teeth of the lead screws is reduced, then the situation that the movement of the driving disc deflects is reduced, and synchronous adjustment of the deflection angles of the multiple blades is facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of wind power generation, and particularly relates to a blade deflection adjustment assembly for wind power generation equipment. Background Art

[0002] A wind turbine is a power device that converts wind energy into mechanical work, drives a rotor to rotate with the mechanical work, and finally outputs alternating current. The Chinese invention patent with the application number of 201510818125.X discloses a fan blade angle link type composite adjustment mechanism, which includes a lead screw nut assembly connected to the output mechanism of a power unit, a plurality of slide bars arranged in parallel with the lead screw nut assembly, a base assembly for fixing the lead screw nut assembly and the slide bars, a sliding device arranged at the front end of the lead screw nut assembly and linearly sliding along the slide bars, and a link assembly connecting the sliding device and the blade; the link assembly includes a link, a rotating arm and a transfer shaft; the link is rotatably installed on the sliding device, one end of the rotating arm is rotatably connected to the link, the other end is fixedly connected to the transfer shaft, and the transfer shaft is connected to the blade shaft sleeves of each wind wheel through a connection assembly.

[0003] The above blade adjustment method drives a sliding disk to move through a lead screw; however, after the thread of the lead screw wears, the single lead screw drive form is likely to cause the driving disk to move obliquely, thereby affecting the adjustment of the fan blade. Summary of the Utility Model

[0004] An embodiment of the utility model provides a blade deflection adjustment assembly for wind power generation equipment, aiming to solve the technical problem of reducing the situation of the driving disk moving obliquely.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A blade deflection adjustment assembly for wind power generation equipment is provided, including:

[0007] A support frame having an adjustment space for the sliding of the driving disk;

[0008] A plurality of lead screws are circumferentially spaced apart along the support frame, and each lead screw is rotationally matched with the support frame; wherein, the driving disk is provided with threaded holes corresponding to the lead screws one by one and in threaded cooperation with them;

[0009] A driving mechanism is arranged on the support frame; the driving mechanism can simultaneously drive a plurality of the lead screws to rotate around their respective axes, so that the driving disk slides in the adjustment space.

[0010] In a possible implementation manner, the thread helix directions of each lead screw are the same, and the driving mechanism includes:

[0011] The transmission shaft is rotatably arranged on the support frame; one end of the transmission shaft is used to connect with the driving component; each of the lead screws is arranged in parallel with the transmission shaft;

[0012] The main gear is connected to the transmission shaft;

[0013] A number of sub-gears correspond to the lead screws one by one; each of the sub-gears is connected to the corresponding lead screw, and each of the sub-gears meshes with the main gear.

[0014] In a possible implementation manner, the transmission shaft is located in the middle of the support frame, and the distance between each lead screw and the transmission shaft is equal.

[0015] In a possible implementation manner, the sub-gear is key-connected to the lead screw, the sub-gear is arranged at one end of the lead screw, and the lead screw has a first boss for axially limiting the sub-gear;

[0016] The main gear is key-connected to the transmission shaft, the main gear is arranged at one end of the transmission shaft, and the transmission shaft has a second boss for axially limiting the main gear.

[0017] In a possible implementation manner, the support frame has a number of mounting grooves on the side wall of the adjustment space, and the ends of the lead screw and the transmission shaft are mounted in the corresponding mounting grooves; bearings are provided at the ends of the lead screw and the transmission shaft, and the bearings are arranged in the mounting grooves.

[0018] In a possible implementation manner, the lead screw has a third boss that contacts the end of the inner ring of the bearing, and the end of the sub-gear contacts the end of the inner ring of the bearing;

[0019] The transmission shaft has a fourth boss that contacts the inner ring of the bearing, and the end of the main gear contacts the end of the inner ring of the bearing.

[0020] In a possible implementation manner, the support frame includes a connecting cylinder and two side plates. The two ends of the connecting cylinder are respectively connected to the two side plates, and an adjustment space is formed between the connecting cylinder and the two side plates; a connecting sleeve through which the rotating shaft of the blade passes is provided on the peripheral wall of the connecting cylinder.

[0021] In a possible implementation manner, the blade deflection adjustment assembly further includes a number of threaded sleeves. The number of threaded sleeves are all arranged on the driving disc, and the number of the threaded sleeves correspond to the lead screws one by one; the threaded sleeves are in threaded cooperation with the corresponding lead screws.

[0022] A blade deflection adjustment assembly for a wind power generation device provided by the present utility model, compared with the prior art, can drive a plurality of lead screws to rotate through a driving mechanism, enabling a driving disk to slide within an adjustment space. The driving disk can drive a connecting rod at its edge position to move, ultimately adjusting the deflection angle of the blade. Through the driving mode of multiple lead screws in this application, a balancing effect can be achieved, reducing the wear of the lead screw threads, thereby reducing the skew of the movement of the driving disk and facilitating the synchronous adjustment of the deflection angles of multiple blades. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 FIG. is a schematic diagram of a blade deflection adjustment assembly for a wind power generation device provided by an embodiment of the present utility model;

[0024] Figure 2 FIG. is a cross-sectional view of a blade deflection adjustment assembly for a wind power generation device provided by an embodiment of the present utility model;

[0025] Figure 3 is Figure 2 an enlarged schematic view of part A in

[0026] Figure 4 is Figure 2 an enlarged schematic view of part B in

[0027] Figure 5 FIG. is a schematic diagram of a driving mechanism part of a blade deflection adjustment assembly for a wind power generation device provided by an embodiment of the present utility model;

[0028] Figure 6 FIG. is a schematic diagram of a driving disk part of a blade deflection adjustment assembly for a wind power generation device provided by an embodiment of the present utility model.

[0029] DESCRIPTION OF THE REFERENCE NUMERALS: 1, support frame; 11, adjustment space; 12, installation groove; 13, connecting cylinder; 14, side plate; 15, connecting sleeve; 2, lead screw; 21, first boss; 22, third boss; 3, driving mechanism; 31, transmission shaft; 311, second boss; 312, fourth boss; 32, main gear; 33, sub-gear; 34, belt pulley; 341, transmission groove; 35, transmission belt; 351, transmission teeth; 36, limiting component; 4, driving disk; 5, threaded sleeve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0031] Please refer toFigures 1 to 6 , a blade deflection adjustment assembly for a wind power generation device provided by the present utility model will be described below. The blade deflection adjustment assembly for a wind power generation device includes a support frame 1, a plurality of lead screws 2, and a driving mechanism 3; the support frame 1 has an adjustment space 11 for sliding the driving disk 4; the plurality of lead screws 2 are circumferentially spaced along the support frame 1, and each lead screw 2 is rotationally engaged with the support frame 1; wherein, the driving disk 4 has threaded holes corresponding to the lead screws 2 one by one and in threaded engagement; the driving mechanism 3 is arranged on the support frame 1; the driving mechanism 3 can simultaneously drive the plurality of lead screws 2 to rotate around their respective axes, so that the driving disk 4 slides in the adjustment space 11.

[0032] Compared with the prior art, the blade deflection adjustment assembly for a wind power generation device provided by the present utility model can drive the plurality of lead screws 2 to rotate through the driving mechanism 3, so that the driving disk 4 slides in the adjustment space 11. The driving disk 4 can drive the connecting rod at its edge position to move, so as to finally adjust the deflection angle of the blade; through the driving mode of multiple lead screws 2 in this application, a balancing effect can be achieved, reducing the wear of the threads of the lead screws 2, and further reducing the situation of skewed movement of the driving disk 4, which is convenient for synchronously adjusting the deflection angles of multiple blades.

[0033] Exemplarily, the blade deflection adjustment assembly in this application is arranged inside the rotating head of the wind power generation device. The multiple blades, connecting rods, and rotating arms provided on the rotating head are all prior arts. The connecting rod and the rotating arm are hinged, and the other end of the connecting rod is hinged on the outer peripheral wall of the driving disk 4; the other end of the rotating arm is connected to the rotating shaft of the blade; when the driving disk 4 slides on the support frame 1, the position of the connecting rod can be changed, and further the position of the driving arm can be changed, so that the driving arm drives the rotating shaft of the blade to rotate.

[0034] In some embodiments, as Figures 1 to 6 shown, the thread helix directions of each lead screw 2 are the same. The driving mechanism 3 includes a transmission shaft 31, a main gear 32, and a plurality of sub-gears 33; the transmission shaft 31 is rotatably arranged on the support frame 1; one end of the transmission shaft 31 is used for connecting with a driving component (not shown in the figure); each lead screw 2 is arranged parallel to the transmission shaft 31; the main gear 32 is connected to the transmission shaft 31; the plurality of sub-gears 33 correspond to the lead screws 2 one by one; each sub-gear 33 is connected to the corresponding lead screw 2, and each sub-gear 33 meshes with the main gear 32; the transmission shaft 31 is located in the middle of the support frame 1, and the distance between each lead screw 2 and the transmission shaft 31 is equal.

[0035] Exemplarily, the driving component can be a driving motor. The output shaft of the driving motor drives the transmission shaft 31 to rotate, and the main gear 32 rotates synchronously with the transmission shaft 31. Since the main gear 32 meshes with the secondary gear 33, after the main gear 32 rotates, the secondary gear 33 also rotates accordingly. At this time, each lead screw 2 rotates around its own axis, and the driving disc 4 can slide within the adjustment space 11 of the support frame 1 to adjust the angle of the blade.

[0036] It should be noted that each lead screw 2 in this embodiment has the same model, and each secondary gear 33 also has the same model. Therefore, when one of the lead screws 2 or one of the secondary gears 33 is damaged, it is convenient to replace the lead screw 2 or the secondary gear 33.

[0037] In some embodiments, as Figures 1 to 6 shown, the secondary gear 33 and the lead screw 2 are key-connected. The secondary gear 33 is arranged at one end of the lead screw 2, and the lead screw 2 has a first boss 21 for axially limiting the secondary gear 33. The main gear 32 and the transmission shaft 31 are key-connected. The main gear 32 is arranged at one end of the transmission shaft 31, and the transmission shaft 31 has a second boss 311 for axially limiting the main gear 32.

[0038] Exemplarily, the secondary gear 33 and the lead screw 2 are key-connected, so the secondary gear 33 and the lead screw 2 can rotate synchronously. By arranging the first boss 21 on the lead screw 2, the first boss 21 contacts the end of the secondary gear 33. When installing the secondary gear 33, the installation position of the secondary gear 33 can be positioned. During normal operation, the first boss 21 can play an axial positioning role for the secondary gear 33.

[0039] Exemplarily, the main gear 32 and the transmission shaft 31 are key-connected, so the main gear 32 and the transmission shaft 31 can rotate synchronously. By arranging the second boss 311 on the transmission shaft 31, the second boss 311 contacts the end of the main gear 32. When installing the main gear 32, the installation position of the main gear 32 can be positioned. During normal operation, the second boss 311 can play an axial positioning role for the main gear 32.

[0040] In some embodiments, as Figures 1 to 6 shown, the support frame 1 has a plurality of mounting grooves 12 on the side wall of the adjustment space 11. The ends of the lead screw 2 and the transmission shaft 31 are installed in the corresponding mounting grooves 12. Bearings are provided at the ends of the lead screw 2 and the transmission shaft 31, and the bearings are arranged in the mounting grooves 12.

[0041] It should be noted that by arranging bearings at the ends of the lead screw 2 and the transmission shaft 31, it can protect the ends of the lead screw 2 and the transmission shaft 31 and reduce the wear of the outer peripheral walls of the lead screw 2 and the transmission shaft 31.

[0042] In some embodiments, as Figures 1 to 6 shown, the lead screw 2 has a third boss 22 in contact with the end of the inner ring of the bearing, and the end of the secondary gear 33 is in contact with the end of the inner ring of the bearing; the transmission shaft 31 has a fourth boss 312 in contact with the inner ring of the bearing, and the end of the main gear 32 is in contact with the end of the inner ring of the bearing.

[0043] Exemplarily, one side of the secondary gear 33 is in contact with the inner ring of the bearing, and the other side of the secondary gear 33 is in contact with the first boss 21. Therefore, axial limitation can be performed on the secondary gear 33, and the stability of the secondary gear 33 during operation can be improved.

[0044] Exemplarily, one side of the main gear 32 is in contact with the inner ring of the bearing, and the other side of the main gear 32 is in contact with the second boss 311. Therefore, axial limitation can be performed on the main gear 32, and the stability of the main gear 32 during operation can be improved.

[0045] In some embodiments, as Figures 1 to 6 shown, the support frame 1 includes a connecting cylinder 13 and two side plates 14. The two ends of the connecting cylinder 13 are respectively connected to the two side plates 14, and an adjustment space 11 is formed between the connecting cylinder 13 and the two side plates 14; a connecting sleeve 15 through which the rotating shaft of the blade passes is provided on the peripheral wall of the connecting cylinder 13. The connecting cylinder 13 and the two side plates 14 are connected by bolts.

[0046] It should be noted that through the cooperation of the connecting cylinder 13 and the two side plates 14, the lead screw 2, the driving disc 4, and the driving mechanism 3 can be wrapped inside the support frame 1; by providing the connecting sleeve 15 on the peripheral wall of the connecting cylinder 13, it is convenient for the rotating shaft of the fan blade to pass through the connecting sleeve 15 and be connected to the rotating arm (the rotating arm is a prior art and will not be elaborated here) inside the adjustment space 11.

[0047] In some embodiments, as Figures 1 to 6 shown, the blade deflection adjustment assembly further includes a plurality of threaded sleeves 5. The plurality of threaded sleeves 5 are all provided on the driving disc 4 and correspond to the lead screw 2 one by one; the threaded sleeves 5 are in threaded cooperation with the corresponding lead screw 2.

[0048] It should be noted that the threaded sleeves 5 are fixed on the driving disc 4 by bolts; through the cooperation of the threaded sleeves 5 and the lead screw 2, when the lead screw 2 rotates, the driving disc 4 can move along the axis direction of the lead screw 2. In this embodiment, three lead screws 2 are taken as an example for illustration. Since the three lead screws 2 are in threaded cooperation with the driving disc 4, the lead screw 2 not only plays a driving role, but also plays a circumferential limiting role to prevent the driving disc 4 from rotating circumferentially.

[0049] Exemplarily, since the threaded sleeves 5 are connected to the driving disc 4 by bolts, when the threaded sleeves 5 are damaged, the threaded sleeves 5 can be replaced.

[0050] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A blade deflection adjustment assembly for a wind power generation device, characterized in that: include: A support frame having an adjustment space for the driving disc to slide; A plurality of lead screws are distributed at intervals along the circumference of the support frame, and each of the lead screws is rotatably matched with the support frame; wherein the driving disk has threaded holes corresponding to the lead screws one by one and threadably matched with the lead screws; The driving mechanism is arranged on the supporting frame; the driving mechanism can simultaneously drive a plurality of the lead screws to rotate around their respective axes so that the driving disk slides in the adjusting space.

2. A blade deflection adjustment assembly for a wind power generation device as claimed in claim 1, characterized in that: The thread direction of each lead screw is the same, and the driving mechanism comprises: A transmission shaft is rotatably arranged on the support frame; one end of the transmission shaft is used to be connected to the driving component; each of the lead screws is arranged parallel to the transmission shaft; A main gear connected to the transmission shaft; A plurality of sub-gears correspond to the lead screws one by one; each of the sub-gears is connected to the corresponding lead screw, and each of the sub-gears is meshed with the main gear.

3. A blade deflection adjustment assembly for a wind power generation device as claimed in claim 2, characterized in that: The transmission shaft is located in the middle of the support frame, and the distance between each lead screw and the transmission shaft is equal.

4. A blade deflection adjustment assembly for a wind power generation device as claimed in claim 2, characterized in that: The auxiliary gear is connected to the lead screw by a key, the auxiliary gear is arranged at one end of the lead screw, and the lead screw has a first boss for axially limiting the auxiliary gear; The main gear is key-connected to the transmission shaft. The main gear is arranged at one end of the transmission shaft. The transmission shaft has a second boss for axially limiting the main gear.

5. A blade deflection adjustment assembly for a wind power generation device as claimed in claim 4, characterized in that: The support frame has a plurality of mounting grooves on the side wall of the adjustment space, and the ends of the lead screw and the ends of the transmission shaft are installed in the corresponding mounting grooves; the ends of the lead screw and the transmission shaft are both provided with bearings, and the bearings are arranged in the mounting grooves.

6. A blade deflection adjustment assembly for a wind power generation device as claimed in claim 5, characterized in that: The lead screw has a third boss in contact with the end of the inner ring of the bearing, and the end of the auxiliary gear is in contact with the end of the inner ring of the bearing; The transmission shaft is provided with a fourth boss which contacts the inner ring of the bearing, and the end of the main gear contacts the end of the inner ring of the bearing.

7. A blade deflection adjustment assembly for a wind power generation device according to any one of claims 1 to 6, characterized in that: The support frame includes a connecting tube and two side plates. The two ends of the connecting tube are respectively connected to the two side plates, and an adjustment space is formed between the connecting tube and the two side plates. The peripheral wall of the connecting tube is provided with a connecting sleeve for the rotating shaft of the blade to pass through.

8. A blade deflection adjustment assembly for a wind power generation device according to any one of claims 1 to 6, characterized in that: The blade deflection adjustment assembly also includes a plurality of threaded sleeves, which are all arranged on the driving disk, and the plurality of threaded sleeves correspond to the lead screws one by one; the threaded sleeves are threadably matched with the corresponding lead screws.

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