Wind wheel assembly of pull rod type wind driven generator

Abstract

The utility model provides a wind wheel assembly of a pull rod type wind driven generator, which belongs to the technical field of wind power generation and comprises an adjusting mechanism and a plurality of blades. The adjusting mechanism has multiple rotating shafts; the rotating shafts are arranged in the circumferential direction of the adjusting mechanism, and each rotating shaft can rotate around the axis of the rotating shaft; each blade is connected with a blade shaft, one end of each blade shaft is connected with the rotating shaft, and the other end of each blade shaft is a free end; a bearing is arranged at the free end of the blade shaft, the free end of the blade shaft is connected with the inner ring of the bearing, and the outer ring of the bearing is connected with a pull rod connecting disc; each pull rod connecting disc is provided with two front-back pull rods which are located on the two sides of the corresponding blade respectively. The other end of each front pull rod and the other end of each rear pull rod are connected to an adjusting mechanism. Adjacent pull rod connecting discs are connected through inter-blade pull rods. The front pull rod, the rear pull rod and the pull rods between the blades can provide supporting when being pressed or pulled, and therefore the supporting effect can be improved through the supporting mode.

Description

Technical Field

[0001] This utility model belongs to the field of wind power generation technology, specifically relating to a wind turbine assembly of a rod-type wind turbine. Background Technology

[0002] Wind power generation converts the kinetic energy of wind into electrical energy. Wind turbines generate electricity by rotating blades to drive the generator set. In existing technology, wind turbines typically have three blades, all of which are cantilever beam structures. These cantilever blades are prone to cracking and breakage.

[0003] Patent application No. 202310127066.6 discloses a cable-stayed wind turbine rotor, including blades, blade shaft, front cable, rear cable, blade cup bearing assembly, and blade shaft tie rod. The blade shaft passes through the blade along its length. A first node is provided near the outer edge of the blade, and a second node is provided away from the outer edge of the blade shaft. The first nodes on adjacent blades are connected to the support cable via the blade shaft tie rod. The second nodes on adjacent blades are connected to form a first inner ring support cable via the blade shaft tie rod.

[0004] The wind turbine blades of the above-mentioned wind turbine are fixed by cables. However, cables only provide tension. When the cables are under pressure, they cannot provide support for the blades. Therefore, the above-mentioned support method is not effective. Utility Model Content

[0005] This utility model provides a wind turbine assembly for a rod-type wind turbine, aiming to solve the technical problem that the existing method of cable support is not effective.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A wind turbine assembly for a rod-type wind turbine is provided, comprising:

[0008] The adjustment mechanism has several rotating shafts at its central position; the several rotating shafts are evenly arranged along the circumference of the adjustment mechanism, and each rotating shaft can rotate about its axis.

[0009] Several blades correspond one-to-one with the rotating shaft; each blade is connected to a blade shaft, one end of which is connected to the rotating shaft, and the other end of which is a free end;

[0010] The blade shaft has a bearing at its free end, which is connected to the inner ring of the bearing. The outer ring of the bearing is connected to a tie rod connecting plate. Each tie rod connecting plate has two front and rear tie rods, which are located on both sides of the blade.

[0011] The other end of each of the front and rear tie rods is connected to the adjustment mechanism, and adjacent tie rod connecting discs are connected by inter-blade tie rods.

[0012] In one possible implementation, the end of each of the front and rear pull rods connected to the pull rod connecting plate is the first end, and the end of each of the front and rear pull rods connected to the adjustment mechanism is the second end.

[0013] In each of the tie rod connecting plates, the second ends of the two front and rear tie rods are located on both sides of the rotating shaft.

[0014] In one possible implementation, the adjusting mechanism is connected to a plurality of pull rod connecting plates, each of the pull rod connecting plates being connected to the second end of the corresponding front and rear pull rods;

[0015] The front and rear pull rods are perpendicular to the pull rod connecting plate, and the pull rod connecting plate has a preset angle with the adjustment mechanism.

[0016] In one possible implementation, a first flange is connected to the rotating shaft, a second flange is connected to the blade shaft, and the blade shaft is connected to the rotating shaft via a flange.

[0017] In one possible implementation, the bearing includes:

[0018] A blade connecting shaft is connected to the free end of the blade shaft;

[0019] The bearing inner ring is in the form of a sleeve and is fitted onto the blade connecting shaft; the outer side of the bearing inner ring is an arc surface.

[0020] The bearing outer ring is fitted onto the bearing inner ring; the inner circumferential wall of the bearing outer ring has an arc surface that mates with the bearing inner ring, and the bearing outer ring and the bearing inner ring are fixed relative to each other in the axial direction;

[0021] A bearing retaining nut is connected to the blade connecting shaft; the bearing retaining nut contacts the bearing inner ring to axially limit the bearing inner ring.

[0022] In one possible implementation, the tie rod connecting disc has a bearing outer sleeve that can be fitted onto the outer ring of the bearing, and the top of the bearing outer sleeve has a bearing retaining ring that contacts the top of the outer ring of the bearing.

[0023] When the tie rod connecting plate is connected to the adjustment mechanism via front and rear tie rods, the bearing retaining ring abuts against the bearing outer ring.

[0024] In one possible implementation, the outer peripheral wall of the blade connecting shaft has an external thread, the inner peripheral wall of the bearing fixing nut has an internal thread, and the bearing fixing nut is threadedly engaged with the blade connecting shaft.

[0025] In one possible implementation, one end of the blade connecting shaft extends through the bearing fixing nut, and the portion of the blade connecting shaft extending through the bearing fixing nut has a threaded hole, at which a positioning bolt is connected; the positioning bolt is used to axially limit the bearing fixing nut.

[0026] In one possible implementation, each of the tie rod connecting plates is provided with two tie rod connecting plates II, and each tie rod connecting plate II is connected to one end of one of the inter-blade tie rods;

[0027] The inter-blade tie rod is perpendicular to the tie rod connecting plate 2, and the tie rod connecting plate 2 and the tie rod connecting disc have a preset angle.

[0028] This utility model provides a wind turbine assembly for a rod-type wind turbine. Compared with the prior art, by setting a bearing on the blade shaft and connecting a rod connecting plate to the outer ring of the bearing, and connecting the rod connecting plate and the adjustment mechanism through front and rear rods, it can ensure that the rod connecting plate and the adjustment mechanism are relatively fixed and will not affect the rotation of the blade shaft, thus facilitating the adjustment of the blade angle. Through the above-mentioned arrangement of this application, the adjacent rod connecting plates are connected by inter-blade rods, and the adjustment mechanism and the rod connecting plates are connected by front and rear rods, which can improve the overall connection strength. Compared with the cable support method in the prior art, the front and rear rods and inter-blade rods in this application can provide support under pressure or tension, so the above-mentioned support method of this application can improve the support effect. Attached Figure Description

[0029] Figure 1 A schematic diagram of a wind turbine assembly for a rod-type wind turbine provided for an embodiment of this utility model;

[0030] Figure 2 A schematic diagram of the adjustment mechanism of the wind turbine assembly of a rod-type wind turbine provided for an embodiment of this utility model;

[0031] Figure 3 A schematic diagram of the tie rod connecting plate portion of the wind turbine assembly of a tie rod type wind turbine provided for an embodiment of this utility model;

[0032] Figure 4This is a cross-sectional schematic diagram of the bearing portion of a wind turbine assembly of a rod-type wind turbine provided for an embodiment of the present invention.

[0033] Explanation of reference numerals in the attached drawings: 1. Adjusting mechanism; 11. Tie rod connecting plate one; 2. Blade; 21. Blade shaft; 3. Rotating shaft; 4. Bearing; 41. Blade connecting shaft; 42. Bearing inner ring; 43. Bearing outer ring; 44. Bearing retaining nut; 45. Sealing cap; 5. Tie rod connecting disc; 51. Bearing outer sleeve; 52. Bearing retaining ring; 53. Tie rod connecting plate two; 6. Front and rear tie rods; 7. Inter-blade tie rod; 8. Nut. Detailed Implementation

[0034] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, 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 merely illustrative of the present utility model and are not intended to limit the present utility model.

[0035] Please refer to the following: Figures 1 to 4 The present invention provides a wind turbine assembly for a rod-type wind turbine. The wind turbine assembly includes an adjustment mechanism 1 and several blades 2. The adjustment mechanism 1 has several rotating shafts 3 at its center. These shafts 3 are evenly arranged circumferentially around the adjustment mechanism 1, and each shaft 3 can rotate around its axis. Each blade 2 corresponds to one of the rotating shafts 3. Each blade 2 is connected to a blade shaft 21, one end of which is connected to a rotating shaft 3, and the other end is a free end. The free end of the blade shaft 21 is provided with a bearing 4, which is connected to the inner ring of the bearing 4. A connecting rod plate 5 is connected to the outer ring of the bearing. Each connecting rod plate 5 has two front and rear connecting rods 6, located on opposite sides of the blade 2. The other end of each front and rear connecting rod 6 is connected to the adjustment mechanism 1, and adjacent connecting rod plates 5 are connected by inter-blade connecting rods 7.

[0036] This utility model provides a wind turbine assembly for a rod-type wind turbine. Compared with the prior art, by setting a bearing 4 on the blade shaft 21, and connecting a rod connecting plate 5 to the outer ring of the bearing 4, and connecting the rod connecting plate 5 and the adjusting mechanism 1 through the front and rear rods 6, it can ensure that the rod connecting plate 5 and the adjusting mechanism 1 are relatively fixed and will not affect the rotation of the blade shaft 21, thus facilitating the adjustment of the blade 2 angle. Through the above-mentioned arrangement of this application, the adjacent rod connecting plates 5 are connected by the inter-blade rods 7, and the adjusting mechanism 1 and the rod connecting plates 5 are connected by the front and rear rods 6, which can improve the overall connection strength. Compared with the cable support method in the prior art, the front and rear rods 6 and the inter-blade rods 7 in this application can provide support when under pressure or tension, so the above-mentioned support method of this application can improve the support effect.

[0037] It should be noted that the adjustment mechanism 1 has a drive structure for driving the rotating shaft 3 to rotate. The drive structure (refer to Chinese invention patent application number 201510818125.X) is prior art and will not be described in detail here. The drive structure in the adjustment mechanism 1 can drive the rotating shaft 3 to rotate, thereby adjusting the angle of the blade 2. During the adjustment of the blade 2 angle, the tie rod connecting plate 5 remains stationary, and the blade 2 deflects relative to the tie rod connecting plate 5. By setting the tie rod connecting plate 5 and the bearing 4 in this application, on the one hand, the position of the tie rod connecting plate 5 can be fixed by the front and rear tie rods 6 and the blade tie rod 7, improving the support effect; on the other hand, it can ensure that there is relative rotation between the blade 2 and the tie rod connecting plate 5, which does not affect the adjustment of the blade 2 angle.

[0038] In some embodiments, such as Figures 1 to 4 As shown, the end of each front and rear pull rod 6 connected to the pull rod connecting plate 5 is the first end, and the end of each front and rear pull rod 6 connected to the adjusting mechanism 1 is the second end; wherein, the second ends of the two front and rear pull rods 6 on each pull rod connecting plate 5 are located on both sides of the rotating shaft 3 respectively.

[0039] It should be noted that the two front and rear tie rods 6 on the tie rod connecting plate 5 are located on both sides of the blade 2, and the two front and rear tie rods 6 are connected to the adjustment mechanism 1 on both sides of the rotating shaft 3. Therefore, while the two front and rear tie rods 6 provide tension to the tie rod connecting plate 5, a clearance space can be formed between the two front and rear tie rods 6. During the adjustment of the blade 2 angle, the blade 2 can swing within the clearance space. Through the above-mentioned arrangement of this application, interference between the front and rear tie rods 6 can be avoided.

[0040] In some embodiments, such as Figures 1 to 4As shown, the adjusting mechanism 1 is connected to several pull rod connecting plates 11, and each pull rod connecting plate 11 is connected to the second end of the corresponding front and rear pull rods 6; wherein, the front and rear pull rods 6 are perpendicular to the pull rod connecting plates 11, and the pull rod connecting plates 11 have a preset angle with the adjusting mechanism 1.

[0041] It should be noted that there are two sets of tie rod connecting plates 11. The two sets of tie rod connecting plates 11 are located on both sides of the rotating shaft 3. Each set of tie rod connecting plates 11 has a tie rod connecting plate 11 corresponding to two front and rear tie rods 6 on the same tie rod connecting plate 5. That is, one of the front and rear tie rods 6 on the same tie rod connecting plate 5 is connected to one set of tie rod connecting plates 11, and the other front and rear tie rod 6 on the same tie rod connecting plate 5 is connected to the other set of tie rod connecting plates 11. Through the above arrangement, a clearance space can be formed between the two front and rear tie rods 6 on the same tie rod connecting plate 5, which facilitates the swing of the blade 2 in the clearance space.

[0042] For example, taking one set of tie rod connecting plates 11 as an example, a set of tie rod connecting plates 11 includes several tie rod connecting plates 11, which are evenly arranged along the circumference of the adjusting mechanism 1, and each tie rod connecting plate 11 is fixed on the adjusting mechanism 1; the tie rod connecting plates 11 are set at a preset angle with the adjusting mechanism 1, so that the front and rear tie rods 6 are set perpendicular to the tie rod connecting plates 11. The tie rod connecting plates 11 have through holes for the front and rear tie rods 6 to pass through, and both ends of the front and rear tie rods 6 have external threads. Nuts 8 are threaded on the front and rear tie rods 6. After the front and rear tie rods 6 pass through the tie rod connecting plates 11, nuts 8 are set at the protruding ends of the front and rear tie rods 6. The nuts 8 on both sides of the tie rod connecting plates 11 can be used to fix the front and rear tie rods 6. The tie rod connecting plate 5 has an inclined through hole for the front and rear tie rods 6 to pass through, and the connection between the front and rear tie rods 6 and the tie rod connecting plate 5 is also fixed by double nuts 8.

[0043] To improve the connection effect, two nuts 8 can be set on each side of the tie rod connecting plate 11, for a total of four nuts 8 to fasten the front and rear tie rods 6.

[0044] In some embodiments, such as Figures 1 to 4 As shown, a first flange is connected to the rotating shaft 3, and a second flange is connected to the blade shaft 21. The blade shaft 21 and the rotating shaft 3 are connected by flanges.

[0045] It should be noted that the first flange is welded to the rotating shaft 3, and the second flange is welded to the blade shaft 21. When the blade 2 is installed on the adjusting mechanism 1, the first flange and the second flange are aligned and fastened with bolts and nuts 8, which can fix the blade 2 on the rotating shaft 3. When the rotating shaft 3 rotates, the blade 2 can swing around the rotating shaft 3 to achieve the purpose of adjusting the angle of the blade 2.

[0046] In some embodiments, such as Figures 1 to 4 As shown, bearing 4 includes a blade connecting shaft 41, an inner bearing ring 42, an outer bearing ring 43, and a bearing retaining nut 44; the blade connecting shaft 41 is connected to the free end of the blade shaft 21; the inner bearing ring 42 is in the form of a sleeve and is fitted onto the blade connecting shaft 41; the outer side of the inner bearing ring 42 is an arc surface; the outer bearing ring 43 is fitted onto the inner bearing ring 42; the inner circumferential wall of the outer bearing ring 43 has an arc surface that mates with the inner bearing ring 42, and the outer bearing ring 43 and the inner bearing ring 42 are fixed relative to each other in the axial direction; the bearing retaining nut 44 is connected to the blade connecting shaft 41; the bearing retaining nut 44 contacts the inner bearing ring 42 to axially limit the inner bearing ring 42.

[0047] It should be noted that the blade connecting shaft 41 is in the form of a sleeve, and is connected to the blade shaft 21 of the blade 2 by welding. The outer end of the blade connecting shaft 41 is sealed by a cap 45. The connection between the cap 45 and the blade connecting shaft 41 can be welding or threaded. When the cap 45 is threadedly connected to the blade connecting shaft 41, the blade connecting shaft 41 has internal threads, and a threaded post is fixedly provided on the cap 45. The cap 45 is threadedly engaged with the blade connecting shaft 41 through the threaded post. By sealing the top of the blade connecting shaft 41 with the cap 45, the amount of debris entering the blade connecting shaft 41 can be reduced.

[0048] For example, the arc surface of the outer peripheral wall of the bearing inner ring 42 is convex, and the arc surface of the inner peripheral wall of the bearing outer ring 43 is concave. The bearing outer ring 43 is located at the center of the bearing inner ring 42. Therefore, the bearing outer ring 43 and the bearing inner ring 42 can be axially positioned, and axial displacement between the bearing outer ring 43 and the bearing inner ring 42 can be avoided during the relative rotation of the bearing outer ring 43 and the bearing inner ring 42.

[0049] For example, one end of the blade connecting shaft 41 extends through the bearing fixing nut 44, and the portion of the blade connecting shaft 41 extending through the bearing fixing nut 44 has a threaded hole, at which a positioning bolt (not shown in the figure) is connected; the positioning bolt is used to axially limit the bearing fixing nut 44; with the above arrangement, the bearing fixing nut 44 can be limited on the blade connecting shaft 41, so that the bearing fixing nut 44 is kept in contact with the end of the bearing inner ring 42, preventing the bearing inner ring 42 from sliding outward from the blade connecting shaft 41.

[0050] For example, the outer peripheral wall of the blade connecting shaft 41 has an external thread, and the inner peripheral wall of the bearing fixing nut 44 has an internal thread. The bearing fixing nut 44 is threadedly engaged with the blade connecting shaft 41. Through the above arrangement, the bearing fixing nut 44 and the blade connecting shaft 41 are threadedly engaged, which enables the bearing fixing nut 44 to be fixed on the blade connecting shaft 41, thereby facilitating the axial positioning of the bearing inner ring 42 by the bearing fixing nut 44.

[0051] In some embodiments, such as Figures 1 to 4 As shown, the tie rod connecting plate 5 has a bearing outer sleeve 51 that can be fitted onto the bearing outer ring 43, and the top of the bearing outer sleeve 51 has a bearing retaining ring 52 that contacts the top of the bearing outer ring 43; wherein, when the tie rod connecting plate 5 is connected to the adjusting mechanism 1 by the front and rear tie rods 6, the bearing retaining ring 52 abuts against the bearing outer ring 43.

[0052] It should be noted that after the bearing outer sleeve 51 is fitted onto the bearing outer ring 43, the bearing retaining ring 52 on the bearing outer sleeve 51 contacts the top of the bearing outer ring 43; after the tie rod connecting plate 5 is fixed by the front and rear tie rods 6, the bearing retaining ring 52 can abut against the bearing outer ring 43; through the above arrangement, the tie rod connecting plate 5 can be connected to the bearing outer ring 43, so the tie rod connecting plate 5 will not affect the adjustment of the blade 2 angle.

[0053] In some embodiments, such as Figures 1 to 4 As shown, each tie rod connecting plate 5 is provided with two tie rod connecting plates 2 53, and each tie rod connecting plate 2 53 is connected to one end of one of the inter-blade tie rods 7; wherein, the inter-blade tie rod 7 is perpendicular to the tie rod connecting plate 2 53, and the tie rod connecting plate 2 53 and the tie rod connecting plate 5 have a preset angle.

[0054] It should be noted that the second tie rod connecting plate 53 is fixed on the tie rod connecting disc 5, and the inter-blade tie rod 7 is set perpendicular to the second tie rod connecting plate 53, facilitating the passage of the inter-blade tie rod 7 through the second tie rod connecting plate 53. Both ends of the inter-blade tie rod 7 are provided with external threads. After the inter-blade tie rod 7 passes through the second tie rod connecting plate 53, there are nuts 8 on both sides of the inter-blade tie rod 7 and the second tie rod connecting plate 53. By tightening the nuts 8, the inter-blade tie rod 7 can be fixed on the second tie rod connecting plate 53. There can be two nuts 8 on each side of the second tie rod connecting plate 53, that is, a total of four nuts 8 can be used for locking, which can improve the locking effect. By setting a preset angle between the second tie rod connecting plate 53 and the tie rod connecting disc 5, the second tie rod connecting plate 53 and the inter-blade tie rod 7 can be set perpendicularly, which facilitates the installation of the inter-blade tie rod 7 onto the second tie rod connecting plate 53.

[0055] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A wind turbine assembly for a rod-type wind turbine, characterized in that, include: The adjustment mechanism has several rotating shafts at its central position; the several rotating shafts are evenly arranged along the circumference of the adjustment mechanism, and each rotating shaft can rotate about its axis. Several blades correspond one-to-one with the rotating shaft; each blade is connected to a blade shaft, one end of which is connected to the rotating shaft, and the other end of which is a free end; The blade shaft has a bearing at its free end, which is connected to the inner ring of the bearing. The outer ring of the bearing is connected to a tie rod connecting plate. Each tie rod connecting plate has two front and rear tie rods, which are located on both sides of the blade. The other end of each of the front and rear tie rods is connected to the adjustment mechanism, and adjacent tie rod connecting discs are connected by inter-blade tie rods.

2. The wind turbine assembly of a rod-type wind turbine as described in claim 1, characterized in that, The end of each of the front and rear pull rods connected to the pull rod connecting plate is the first end, and the end of each of the front and rear pull rods connected to the adjustment mechanism is the second end; In each of the tie rod connecting plates, the second ends of the two front and rear tie rods are located on both sides of the rotating shaft.

3. The wind turbine assembly of a rod-type wind turbine as described in claim 2, characterized in that, The adjustment mechanism is connected to a plurality of pull rod connecting plates, and each pull rod connecting plate is connected to the second end of the corresponding front and rear pull rods. The front and rear pull rods are perpendicular to the pull rod connecting plate, and the pull rod connecting plate has a preset angle with the adjustment mechanism.

4. The wind turbine assembly of a rod-type wind turbine as described in claim 1, characterized in that, A first flange is connected to the rotating shaft, and a second flange is connected to the blade shaft. The blade shaft and the rotating shaft are connected by flanges.

5. The wind turbine assembly of a rod-type wind turbine as described in claim 1, characterized in that, The bearing includes: A blade connecting shaft is connected to the free end of the blade shaft; The bearing inner ring is in the form of a sleeve and is fitted onto the blade connecting shaft; the outer side of the bearing inner ring is an arc surface. The bearing outer ring is fitted onto the bearing inner ring; the inner circumferential wall of the bearing outer ring has an arc surface that mates with the bearing inner ring, and the bearing outer ring and the bearing inner ring are fixed relative to each other in the axial direction; A bearing retaining nut is connected to the blade connecting shaft; the bearing retaining nut contacts the bearing inner ring to axially limit the bearing inner ring.

6. The wind turbine assembly of a rod-type wind turbine as described in claim 5, characterized in that, The tie rod connecting disc has a bearing outer sleeve that can be fitted onto the outer ring of the bearing, and the top of the bearing outer sleeve has a bearing retaining ring that contacts the top of the outer ring of the bearing. When the tie rod connecting plate is connected to the adjustment mechanism via front and rear tie rods, the bearing retaining ring abuts against the bearing outer ring.

7. The wind turbine assembly of a rod-type wind turbine as described in claim 5, characterized in that, The outer peripheral wall of the blade connecting shaft has an external thread, and the inner peripheral wall of the bearing fixing nut has an internal thread. The bearing fixing nut is threadedly engaged with the blade connecting shaft.

8. The wind turbine assembly of a rod-type wind turbine as described in claim 7, characterized in that, One end of the blade connecting shaft passes through the bearing fixing nut, and the part of the blade connecting shaft that passes through the bearing fixing nut has a threaded hole, and a positioning bolt is connected to the threaded hole; the positioning bolt is used to axially limit the bearing fixing nut.

9. The wind turbine assembly of a rod-type wind turbine as described in claim 1, characterized in that, Each of the tie rod connecting plates is provided with two tie rod connecting plates, and each tie rod connecting plate is connected to one end of one of the inter-blade tie rods; The inter-blade tie rod is perpendicular to the tie rod connecting plate 2, and the tie rod connecting plate 2 and the tie rod connecting disc have a preset angle.

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