Spiral wind driven generator with shaft in middle

Abstract

The utility model discloses a spiral wind driven generator with a shaft in the middle, which comprises a fan main shaft, and a plurality of groups of mounting mechanisms for quickly assembling first fan blades and second fan blades are arranged on the fan main shaft; the mounting mechanism comprises first fixing blocks and second fixing blocks, the first fixing blocks are arranged on the two sides of the fan main shaft correspondingly, first lead screws are connected into the first fixing blocks, first stainless steel sleeves further sleeve the first lead screws, the first lead screws penetrate through the first mounting openings, and first mounting openings and second mounting openings are formed in the two sides of the first fan blades correspondingly; a third mounting opening and a fourth mounting opening are formed in the second fan blade, a second lead screw is connected into the second fixing block, and a second stainless steel sleeve is connected to the second lead screw in a sleeving mode; according to the fan main shaft reinforcing structure, the installation steps are reduced, the situation that the first fan blades and the second fan blades are loosened is prevented, the fan main shaft rotating body is integrally designed, and the strength is improved while it is guaranteed that the fan main shaft is concentric.

Description

Technical Field

[0001] The utility model belongs to the technical field of wind turbines, and particularly relates to a wind turbine with a spiral shaft in the middle. Background Technique

[0002] When installing conventional spiral blades, 10 nuts with washers and caps need to be installed on each layer. The steps are as follows: 1. First, insert one end of the screw into a pair of back-to-back washers and nuts, with a total of 2 pieces. A stainless steel sleeve is pre-sleeved between the two nuts. Then, insert the screw into the inner mounting hole of one side of the blade. Install a pair of back-to-back nuts, with a total of 2 pieces. Then, pass the screw through the mounting hole of the main shaft of the fan. After extending, install a pair of back-to-back nuts, with a total of 2 pieces. At the same time, pass through the inner mounting hole of the other side blade, and turn one nut, put on the stainless steel sleeve, and install the nut to ensure the back-to-back type with the previous nut. Finally, pass both ends of the screw through the outer mounting holes of both sides of the blade, and install the nuts with caps at both ends where the screw extends.

[0003] This step is only the installation step of the blades on one layer of the fan, and a fan contains 6 layers of blades. The defects and deficiencies caused by such assembly are as follows: First, there will be extremely few bolts that are not assembled according to the tightening torque during assembly, resulting in loosening; Second, during long-term use, the bolts show signs of loosening. These two situations will pose great safety hazards to the fan. In strong winds such as typhoons, the blades of the fan will become loose, and in extreme cases, the blades of the fan will fall apart and be damaged. The blade assembly process of conventional spiral wind turbines is complex and cumbersome.

[0004] For the installation of blades, the middle main shaft of a conventional spiral wind turbine is made of hollow pipe material, and then holes are drilled outside the main shaft for the connecting screws of the blades. Under strong wind conditions, the blades drive the main shaft to rotate at high speed. Under the action of centrifugal force, the main shaft is extremely easy to break due to the hollow pipe and no internal support. Especially in high-power spiral wind turbines, the main shaft is often longer, resulting in a sharp decrease in the slenderness ratio and tensile stability of the main shaft, posing serious safety hazards. Content of the Utility Model

[0005] The purpose of the utility model is to provide a wind turbine with a spiral shaft in the middle, so as to solve the problems mentioned in the above background technique, that is, in strong winds such as typhoons, the blades of the fan will become loose, and in extreme cases, the blades of the fan will fall apart and be damaged. The blade assembly process of conventional spiral wind turbines is complex and cumbersome. The main shaft is extremely easy to break due to the hollow pipe and no internal support. Especially in high-power spiral wind turbines, the slenderness ratio and tensile stability of the main shaft are sharply reduced, posing serious safety hazards.

[0006] To achieve the above object, the present utility model provides the following technical solutions: a middle shaft helical wind turbine, including a fan main shaft, and a plurality of installation mechanisms for quickly assembling a first wind blade and a second wind blade are arranged on the fan main shaft;

[0007] The installation mechanism includes a first fixing block and a second fixing block. The first fixing blocks are respectively arranged on both sides of the fan main shaft. A first lead screw is connected inside the first fixing block, and a first stainless steel sleeve is also sleeved on the first lead screw. The first lead screw penetrates through a first installation opening. First installation openings and second installation openings are respectively arranged on both sides of the first wind blade. The second installation opening corresponds to the second fixing block. A third installation opening and a fourth installation opening are arranged on the second wind blade. The third installation opening corresponds to the first fixing block. A second lead screw is connected inside the second fixing block, and a second stainless steel sleeve is sleeved on the second lead screw. One end of the second lead screw penetrates through the fourth installation opening;

[0008] Wherein, the fan main shaft is connected to the generator main shaft through a reinforcement structure.

[0009] Preferably, a second locknut with washer is arranged on one side of the first stainless steel sleeve, and a first locknut with washer is arranged on one side of the first lead screw, which can lock one end of the first wind blade.

[0010] Preferably, a third locknut with washer is arranged on the other side of the first stainless steel sleeve. The third locknut with washer is used to fix the second wind blade and can lock the second wind blade to the first fixing block.

[0011] Preferably, a fourth locknut with washer is arranged on one side of the second stainless steel sleeve. The fourth locknut with washer is used to fix the first wind blade and can fix the other end of the first wind blade to the second fixing block.

[0012] Preferably, a fifth locknut with washer is further arranged on the other side of the second stainless steel sleeve, and a sixth locknut with washer is further arranged on one side of the second lead screw, which can lock and fix the other end of the second wind blade.

[0013] Preferably, the reinforcement structure includes an upper mounting seat and a lower mounting seat. The fan main shaft is rotatably connected to the upper mounting seat through a first ball bearing. The other end of the fan main shaft is connected to the lower mounting seat through a second ball bearing. One end of the fan main shaft is connected to the generator main shaft, improving the overall strength of the fan main shaft.

[0014] Compared with the prior art, the beneficial effects of the present utility model are:

[0015] (1) The present utility model can quickly install the first wind blade and the second wind blade on the fan main shaft, greatly reducing the installation steps. At the same time, it fixes the first wind blade and the second wind blade through double-sided nuts, preventing the first wind blade and the second wind blade from loosening.

[0016] (2) In the present utility model, the rotating body of the fan main shaft uses an integrated design, and at the same time, a first ball bearing is used at the top of the fan main shaft to ensure concentricity of the fan main shaft and improve strength while. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a top view structural schematic diagram of the present utility model;

[0018] Figure 2 is Figure 1 an enlarged structural schematic diagram of part A in

[0019] Figure 3 is Figure 1 an enlarged structural schematic diagram of part B in

[0020] Figure 4 is Figure 1 an enlarged structural schematic diagram of part C in

[0021] Figure 5 is Figure 1 an enlarged structural schematic diagram of part D in

[0022] Figure 6 is a front view sectional structural schematic diagram of the fan main shaft in the present utility model;

[0023] Figure 7 is Figure 6 an enlarged structural schematic diagram of part E in

[0024] In the figure: 1. First wind blade; 2. First stainless steel sleeve; 3. Fan main shaft; 4. Second wind blade; 5. Second stainless steel sleeve; 6. First lead screw; 7. Second locknut with washer; 8. First mounting opening; 9. First locknut with washer; 10. Third locknut with washer; 11. Third mounting opening; 12. First fixing block; 13. First welding part; 14. Second welding part; 15. Second fixing block; 16. Second lead screw; 17. Second mounting opening; 18. Fourth locknut with washer; 19. Fifth locknut with washer; 20. Fourth mounting opening; 21. Sixth locknut with washer; 22. First ball bearing; 23. Upper mounting seat; 24. Second ball bearing; 25. Lower mounting seat; 26. Generator main shaft. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0026] Please refer to Figures 1-5 , the present utility model provides a technical solution: a middle-shaft spiral wind turbine, including a fan main shaft 3, and a plurality of installation mechanisms for quickly assembling the first wind blade 1 and the second wind blade 4 are arranged on the fan main shaft 3;

[0027] The installation mechanism includes a first fixing block 12 and a second fixing block 15. The first fixing blocks 12 are respectively arranged on both sides of the fan main shaft 3. A first lead screw 6 is connected inside the first fixing block 12. A first stainless steel sleeve 2 is also sleeved on the first lead screw 6. The first lead screw 6 penetrates through the first installation opening 8. The first installation opening 8 and the second installation opening 17 are respectively arranged on both sides of the first wind blade 1. The second installation opening 17 corresponds to the second fixing block 15. A third installation opening 11 and a fourth installation opening 20 are arranged on the second wind blade 4. The third installation opening 11 corresponds to the first fixing block 12. A second lead screw 16 is connected inside the second fixing block 15. A second stainless steel sleeve 5 is sleeved on the second lead screw 16. One end of the second lead screw 16 penetrates through the fourth installation opening 20.

[0028] A second locknut with washer 7 is arranged on one side of the first stainless steel sleeve 2, and a first locknut with washer 9 is arranged on one side of the first lead screw 6, which can lock one end of the first wind blade 1.

[0029] A third locknut with washer 10 is arranged on the other side of the first stainless steel sleeve 2. The third locknut with washer 10 is used to fix the second wind blade 4 and can lock the second wind blade 4 and the first fixing block 12.

[0030] A fourth locknut with washer 18 is arranged on one side of the second stainless steel sleeve 5. The fourth locknut with washer 18 is used to fix the first wind blade 1 and can fix the other end of the first wind blade 1 and the second fixing block 15 together.

[0031] A fifth locknut with washer 19 is also arranged on the other side of the second stainless steel sleeve 5, and a sixth locknut with washer 21 is also arranged on one side of the second lead screw 16, which can lock and fix the other end of the second wind blade 4.

[0032] When installing the first wind blade 1 and the second wind blade 4, first insert the first lead screw 6 into the first stainless steel sleeve 2, then pass the first lead screw 6 through the first mounting opening 8, and lock the first washer nut 9 and the second washer nut 7. The first washer nut 9 and the second washer nut 7 lock one end of the first wind blade 1. Then, fit the second wind blade 4 with the first fixing block 12, pass the first lead screw 6 through the third mounting opening 11, and tighten and fix the first lead screw 6 in the first fixing block 12. Then, tighten the third washer nut 10 to fix one end of the second wind blade 4. Next, pass the second lead screw 16 through the second stainless steel sleeve 5, and pass the second lead screw 16 through the fourth mounting opening 20, and simultaneously tighten the fifth washer nut 19 and the sixth washer nut 21. The fifth washer nut 19 and the sixth washer nut 21 fix one end of the second wind blade 4. At this time, the other end of the first wind blade 1 is fitted with the second fixing block 15. Pass the second lead screw 16 through the second mounting opening 17, tighten and fix the second lead screw 16 in the second fixing block 15, and then tighten the fourth washer nut 18. The fourth washer nut 18 fixes the other end of the first wind blade 1. The overall assembly process reduces the installation difficulty while increasing the windward area of the fan, increasing the resistance, and ultimately improving the wind energy utilization rate of the fan.

[0033] Furthermore, the first fixing block 12 is welded to the fan main shaft 3 through the first welding part 13, and the second fixing block 15 is welded to the fan main shaft 3 through the second welding part 14. Specifically, the first fixing block 12 and the second fixing block 15 are respectively provided with threads corresponding to the first lead screw 6 and the second lead screw 16 for locking the first lead screw 6 and the second lead screw 16.

[0034] As a specific embodiment of the present application, please refer to Figure 6 and Figure 7 , the fan main shaft 3 is connected to the generator main shaft 26 through a reinforcement structure. The reinforcement structure includes an upper mounting seat 23 and a lower mounting seat 25. The fan main shaft 3 is rotatably connected to the upper mounting seat 23 through a first ball bearing 22. The other end of the fan main shaft 3 is connected to the lower mounting seat 25 through a second ball bearing 24. One end of the fan main shaft 3 is connected to the generator main shaft 26, improving the overall strength of the fan main shaft 3.

[0035] When the generator main shaft 26 rotates, it can drive the rotation of the fan main shaft 3. The fan main shaft 3 rotates in the upper mounting seat 23 and the lower mounting seat 25 through the first ball bearing 22 and the second ball bearing 24. The concentricity and overall safety performance of the fan main shaft 3 are effectively guaranteed, completely avoiding the risk of the main rod breakage of the traditional spiral wind turbine main shaft 26 being hollow and having no internal support under extreme working conditions.

[0036] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A spiral wind turbine with an intermediate shaft, characterized in that: It comprises a fan main shaft (3), on which a plurality of mounting mechanisms for quickly assembling a first fan blade (1) and a second fan blade (4) are arranged; The mounting mechanism comprises a first fixing block (12) and a second fixing block (15), the first fixing block (12) being respectively arranged on both sides of the fan main shaft (3), a first screw rod (6) being connected inside the first fixing block (12), a first stainless steel sleeve (2) being sleeved on the first screw rod (6), the first screw rod (6) passing through a first mounting opening (8), a first mounting opening (8) and a second mounting opening (17) being respectively arranged on both sides of the first fan blade (1), the second mounting opening (17) corresponding to the second fixing block (15), a third mounting opening (11) and a fourth mounting opening (20) being arranged on the second fan blade (4), the third mounting opening (11) corresponding to the first fixing block (12), a second screw rod (16) being connected inside the second fixing block (15), a second stainless steel sleeve (5) being sleeved on the second screw rod (16), one end of the second screw rod (16) passing through the fourth mounting opening (20); Wherein, the fan main shaft (3) is connected to the generator main shaft (26) via a reinforcement structure.

2. The intermediate-shaft spiral wind turbine according to claim 1, characterized in that: A second nut with a washer (7) is arranged on one side of the first stainless steel sleeve (2).

3. The intermediate-shaft spiral wind turbine according to claim 1, characterized in that: A first nut with a washer (9) is provided on one side of the first screw rod (6).

4. The intermediate-shaft spiral wind turbine according to claim 1, characterized in that: A third nut with a washer (10) is provided on the other side of the first stainless steel sleeve (2), and the third nut with a washer (10) is used to fix the second fan blade (4).

5. The intermediate-shaft spiral wind turbine according to claim 1, characterized in that: A fourth nut with a washer (18) is provided on one side of the second stainless steel sleeve (5), and the fourth nut with a washer (18) is used to fix the first fan blade (1).

6. The intermediate-shaft spiral wind turbine according to claim 1, characterized in that: A fifth nut with a washer (19) is also provided on the other side of the second stainless steel sleeve (5), and a sixth nut with a washer (21) is also provided on one side of the second screw rod (16).

7. The intermediate-shaft spiral wind turbine according to claim 1, characterized in that: The reinforcement structure comprises an upper mounting seat (23) and a lower mounting seat (25); the fan main shaft (3) is rotatably connected to the upper mounting seat (23) via a first ball bearing (22); the other end of the fan main shaft (3) is connected to the lower mounting seat (25) via a second ball bearing (24); and one end of the fan main shaft (3) is connected to a generator main shaft (26).

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