Vertical axis wind generating set

Abstract

The invention provides a vertical axis wind generating set which comprises a transmission shaft, a fan mounting frame, a generator and a plurality of fan blades, the upper end of the transmission shaft is rotationally connected with the fan mounting frame, and the lower end of the transmission shaft is in transmission connection with the generator; the fan blades are parallel to one another in the vertical direction, the fan blades are sequentially arranged front and back at intervals and spirally distributed with the center line of the transmission shaft as the center line from top to bottom, the fan blades on the upper portion and the fan blades on the lower portion are arranged in a staggered mode, and the fan blades are fixed to the transmission shaft through a connecting mechanism. The transmission shaft, the fan blades and the connecting mechanism form the wind wheel, so that the wind catching capacity of the fan blades can be greatly enhanced, the stress of the wind wheel is more continuous, the conversion efficiency is higher, and the problems that a vertical shaft fan is difficult to start and dead angles exist in the windward direction during starting can be solved.

Description

Technical Field

[0001] The invention relates to the technical field of wind power generation, and in particular to a vertical axis wind power generator set. Background Art

[0002] In the prior art, vertical axis wind turbines are classified according to the principle of wind energy conversion, and are mainly divided into resistance type vertical axis wind turbines and lift type vertical axis wind turbines. Resistance type vertical axis wind turbines mainly use the resistance generated by air flowing through the blades as the driving force, while lift type vertical axis wind turbines use the lift generated by air flowing through the blades as the driving force. Resistance type vertical axis wind turbines use the wind resistance difference between headwind and tailwind to do work, with a low speed, low conversion efficiency, more material consumption for the blades, and usually need to be equipped with a speed increase mechanism, resulting in excessive cost; while lift type vertical axis wind turbines are suitable for high speed generators, and generally micro-small units can be used to directly drive generators, so their blade costs and generator costs are lower than those of resistance type vertical axis wind turbines; based on cost and other factors, lift type vertical axis wind turbines have become a development trend in the industry.

[0003] For example, the Chinese invention patent application with application publication number CN117927414A discloses a lift-type vertical axis wind turbine impeller capable of controlling rotation speed, including a main shaft, an impeller frame and an angle-adjustable impeller assembly, wherein the angle-adjustable impeller assembly can drive the impeller frame to rotate when subjected to airflow; the angle-adjustable impeller assembly includes a rotating connecting shaft, blades and an angle-adjusting device. The angle-adjusting device of the invention can drive the blades to move so as to adjust the angle of the blade angle. When the wind speed is less than or equal to the rated wind speed, the blade angle can be adjusted to 60-70° so that the blade is in the highest rotation speed state and the power generation efficiency is improved; when the wind speed exceeds the rated wind speed, the blade angle can be adjusted to 20-60° or 70-110° so as to reduce the wind-catching ability of the blades and avoid excessive rotation speed, which increases the load and affects the service life of the mechanical parts; the overall structural design is reasonable, and has the beneficial effects of adjustable blade angle and controllable rotation speed. However, the multiple blades of the generator impeller have a small area in contact with the wind in the windward direction, and the fan is difficult to start when the wind volume is small. At the same time, such a generator impeller cannot ensure the continuity of the force applied to the impeller, and the wind energy conversion efficiency is not high.

[0004] Therefore, the prior art for the above problems still needs to be improved and developed. Summary of the invention

[0005] The purpose of the present invention is to provide a vertical axis wind turbine generator set with strong wind capture capability in view of the defects and shortcomings of the prior art.

[0006] In order to achieve the above-mentioned solution, the technical solution adopted by the present invention is as follows:

[0007] The present invention provides a vertical axis wind turbine generator set, comprising a transmission shaft, a wind turbine mounting frame, a generator and a plurality of wind blades, wherein the upper end of the transmission shaft is rotatably connected to the wind turbine mounting frame, and the lower end of the transmission shaft is transmission-connected to the generator;

[0008] Several of the blades are parallel to each other in the vertical direction, several of the blades are arranged in sequence with intervals in front and back, and are distributed in a spiral shape from top to bottom with the center line of the transmission shaft as the center line, the upper blades are staggered with the lower blades, and several of the blades are fixed to the transmission shaft through a connecting mechanism. Through the above-mentioned structural setting, several blades are connected to the transmission shaft through a connecting mechanism, that is, a wind wheel is formed. Such a wind wheel is evenly stressed when rotating, and the rotation center of the wind wheel coincides with the rotation center of the transmission shaft, and no eccentric vibration will occur; the blades on the wind wheel are arranged continuously in a spiral shape, and the blades are not on the same plane, staggered up and down, which can greatly enhance the wind catching ability of each blade on the wind wheel; the force on the wind wheel is more continuous, and the conversion efficiency is more efficient, which can eliminate the problem of difficult starting of the vertical axis fan and the dead angle in the windward direction when starting, reduce the resonance phenomenon caused by pressure changes, and improve stability. Preferably, the spiral shape formed by several of the blades is a cylindrical spiral shape.

[0009] According to the above scheme, the connection mechanism includes an upper wheel disc, a lower wheel disc and a connecting piece, the upper wheel disc is fixedly sleeved on the outer side of the upper part of the transmission shaft, the lower wheel disc is fixedly sleeved on the outer side of the lower part of the transmission shaft, a plurality of the fan blades are fixedly connected to the connecting piece, and the connecting piece is fixedly connected to the upper wheel disc and the lower wheel disc respectively. More specifically, the upper wheel disc and the lower wheel disc are parallel to each other and have the same diameter. Through the above structural setting, it is convenient for the fan blades to be fixedly connected to the transmission shaft.

[0010] According to the above scheme, the connecting member includes an upper connecting seat, a lower connecting seat and a plurality of wind wheel cross-brackets, the upper connecting seat and the lower connecting seat are parallel to each other, and the upper connecting seat and the lower connecting seat are arranged in a cylindrical spiral shape from top to bottom around the transmission shaft, the upper end of the fan blade is fixed to the upper connecting seat, the lower end of the fan blade is fixed to the lower connecting seat, the tail end of the lower connecting seat is fixed to the lower wheel disc, the head end of the upper connecting seat is fixed to the upper wheel disc, the wind wheel cross-bracket is perpendicular to the transmission shaft and fixedly connected to the transmission shaft, one end of the wind wheel cross-bracket is fixed to the upper connecting seat, and the other end of the wind wheel cross-bracket is fixed to the lower connecting seat. Through the above structural arrangement, the connection between the fan blade and the transmission shaft is more stable, the wind wheel formed by the two has better integrity, and does not affect the wind catching ability of the fan blade.

[0011] According to the above scheme, the heights of the blades are the same, and the pitch of the upper connecting seat is twice the height of the blades. Through the above structural arrangement, in the windward direction, the front blades and the rear blades do not overlap each other, and will not block the airflow or interfere with the airflow direction. In this embodiment, the blades are preferably of the same size.

[0012] According to the above scheme, the connecting member includes a plurality of cables, the plurality of cables are parallel to the transmission shaft, and the plurality of cables are evenly distributed around the transmission shaft, the upper ends of the cables are fixed to the upper wheel disc, the lower ends of the cables are fixed to the lower wheel disc, and the fan blades are fixed to the cables. More specifically, the cables are steel cables, two cables form a group, and the two cables pass through the upper and lower parts of the fan blades respectively. Through the above structural setting, the spiral distribution of the fan blades can also be achieved.

[0013] According to the above solution, the cross-sectional shape of the fan blade is a teardrop-shaped airfoil. More specifically, the installation angle of each fan blade airfoil is the same. Through the above structural setting, the resistance of the fan blade during rotation can be reduced, and the lift of the wind wheel can be increased.

[0014] According to the above scheme, the present invention further comprises a machine room, an upper bearing assembly and a lower bearing assembly, the fan mounting frame comprises a fan column and a cross bracket, the generator is installed in the machine room, the lower end of the fan column is fixed to the mounting surface, the upper end of the fan column is fixedly connected to the first end of the cross bracket,

[0015] The upper bearing assembly comprises an upper bearing seat, an upper bearing, an upper oil seal, an upper connecting shaft and an adjusting nut, wherein the upper bearing and the upper oil seal are sequentially installed in the inner cavity of the upper bearing seat, the upper end of the upper connecting shaft sequentially passes through the upper oil seal and the upper bearing and is locked and connected with the adjusting nut, the lower end of the upper connecting shaft is fixedly connected to the upper end of the transmission shaft, and the upper bearing seat is connected to the second end of the cross bracket through a first installation group;

[0016] The lower bearing assembly includes a lower bearing seat, a lower bearing, a lower oil seal and a lower connecting shaft. The lower bearing and the lower oil seal are sequentially installed in the inner cavity of the lower bearing seat. The upper end of the lower connecting shaft is fixedly connected to the lower end of the transmission shaft. The lower end of the lower connecting shaft sequentially passes through the top of the machine room, the lower bearing and the lower oil seal and is connected to the generator through the transmission assembly. The lower bearing seat is connected to the top of the machine room through the second installation group. The above structural arrangement is conducive to the rotation of the transmission shaft in the vertical direction.

[0017] According to the above scheme, the first installation group includes a first mounting plate fixed to the second end of the cross bracket, an upper buffer connecting plate, multiple hanger rod seats, multiple hangers, multiple upper buffer springs, multiple upper spring retaining rings and multiple upper nuts. The upper end of the hanger rod is set to be spherical or hemispherical, the lower end of the hanger rod is provided with a thread, and the hanger rod seat is provided with a groove matching the upper end of the hanger rod. During installation, the hanger rod seat is placed on the upper side of the hanger rod mounting plate, and the lower end of the hanger rod passes through the hemispherical groove, the hanger rod mounting plate, the upper buffer spring and the upper spring retaining ring in sequence and is threadedly connected to the upper nut. The upper end of the hanger rod is placed in the groove, and the upper buffer spring The upper end is against the upper buffer connecting plate, the lower end of the upper buffer spring is against the upper spring retaining ring, the hanger seat, hanger, upper buffer spring, upper spring retaining ring and upper nut correspond to each other one by one, and the end of the upper bearing seat away from the transmission shaft is fixed to the lower side of the upper buffer connecting plate; through the above-mentioned structural arrangement, the upper end of the hanger can rotate freely within the range limited by the groove, the upper buffer spring has a buffering effect on the upper bearing assembly and the transmission shaft, and when the wind wheel rotates, a gyro effect is generated. The above-mentioned structure enables the rotation center of the wind wheel to automatically adjust to coincide with the center line of the transmission shaft, and applies upward lift to the upper buffer spring, which can reduce the impact of sudden loads on the wind wheel.

[0018] According to the above scheme, the second installation group includes a second installation plate fixed to the top of the machine room, a lower buffer connection plate, multiple spring guide rods, multiple lower buffer springs, multiple lower spring retaining rings and multiple lower nuts, the upper end of the spring guide rod is provided with a thread, the lower end of the spring guide rod is fixed with a limit block, the lower buffer connection plate is provided with a through hole for the lower connecting shaft to pass through, the end of the lower bearing seat away from the generator is fixed to the lower side of the lower buffer connection plate, the upper end of the spring guide rod passes through the lower buffer connection plate, the lower buffer spring and the lower spring retaining ring in turn and is threadedly connected with the lower nut, the upper end of the lower buffer spring is against the lower spring retaining ring, the lower end of the lower buffer spring is against the second installation plate, the limit block is against the lower buffer connection plate, and the spring guide rod, the lower buffer spring, the lower spring retaining ring and the lower nut correspond to each other. Through the above structural arrangement, the impact of sudden load on the wind wheel can be further reduced.

[0019] According to the above scheme, the transmission assembly includes a universal coupling and a gear transmission, the upper end of the universal coupling is connected to the lower end of the lower connecting shaft, the lower end of the universal coupling is connected to the input end of the gear transmission, and the output end of the gear transmission is connected to the generator. Through the above structural setting, the torque transmission can be effectively realized, driving the generator to rotate and output electrical energy.

[0020] According to the above solution, the fan column is connected to two or more transverse brackets. The transverse brackets are evenly distributed along the circumferential direction, and each transverse bracket corresponds to a wind wheel. The above structural arrangement can improve efficiency.

[0021] Beneficial effects of the present invention:

[0022] The blades of the present invention are parallel to each other in the vertical direction, and a plurality of the blades are arranged in sequence with intervals in front and back, and are distributed in a spiral shape from top to bottom with the center line of the transmission shaft as the center line, and the upper blades are staggered with the lower blades, and a plurality of the blades are fixed to the transmission shaft through a connecting mechanism. Through the above-mentioned structural setting, a plurality of blades are connected to the transmission shaft through a connecting mechanism, that is, a wind wheel is formed, and such a wind wheel is subjected to uniform force when rotating, and the rotation center of the wind wheel coincides with the rotation center of the transmission shaft, and no eccentric vibration is generated; the blades on the wind wheel are arranged in a spiral shape in succession, and the blades are not on the same plane, and are staggered up and down, which can greatly enhance the wind catching capacity of each blade on the wind wheel; the force on the wind wheel is more continuous, and the conversion efficiency is more efficient, which can eliminate the problem that the vertical axis fan is difficult to start and there is a dead angle in the windward direction when starting, reduce the resonance phenomenon caused by pressure changes, and improve stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a partial structural diagram of Embodiment 1 of the present invention;

[0024] Figure 2 yes Figure 1 The main view;

[0025] Figure 3 is the cross-sectional shape of the fan blade of the present invention;

[0026] Figure 4 It is a schematic diagram of the overall structure of Embodiment 1 of the present invention;

[0027] Figure 5 yes Figure 4 Schematic diagram of the cross-section structure at point A in the middle.

[0028] Figure 6 yes Figure 4 Schematic diagram of the local cross-section structure at point B in the middle;

[0029] Figure 7 yes Figure 6 Enlarged view of point C in the middle;

[0030] Figure 8 It is a partial structural diagram of Example 2 of the present invention.

[0031] In the figure: 1, transmission shaft; 2, fan mounting frame; 21, fan column; 22, cross bracket; 3, generator; 4, fan blade; 51, upper wheel disc; 52, lower wheel disc; 53, upper connecting seat; 54, lower connecting seat; 55, wind wheel cross support rod; 56, cable; 6, machine room; 7, upper bearing assembly; 71, upper bearing seat; 72, upper bearing; 73, upper oil seal; 74, upper connecting shaft; 75, adjusting nut; 8, lower bearing assembly; 81, lower bearing seat; 82, lower bearing; 83, lower oil seal Seal; 84, lower connecting shaft; 9, first installation group; 91, first installation plate; 92, upper buffer connecting plate; 93, suspension rod seat; 94, suspension rod; 95, upper buffer spring; 96, upper spring retaining ring; 97, upper nut; 10, second installation group 101, second installation plate; 102, lower buffer connecting plate; 103, spring guide rod; 104, lower buffer spring; 105, lower spring retaining ring; 106, lower nut; 107, limit block; 11, universal coupling; 12, gear transmission. DETAILED DESCRIPTION

[0032] The technical solution of the present invention is described below in conjunction with the accompanying drawings and embodiments.

[0033] Example 1

[0034] like Figure 1-7 As shown, the present invention provides a vertical axis wind turbine generator set, comprising a transmission shaft 1, a wind turbine mounting frame 2, a generator 3 and a plurality of wind blades 4, wherein the upper end of the transmission shaft 1 is rotatably connected to the wind turbine mounting frame 2, and the lower end of the transmission shaft 1 is transmission-connected to the generator 3;

[0035] Several blades 4 are parallel to each other in the vertical direction, several blades 4 are arranged in sequence with intervals in front and back, and are distributed in a spiral shape from top to bottom with the center line of the transmission shaft 1 as the center line, the upper blades 4 are staggered with the lower blades 4, and several blades 4 are fixed to the transmission shaft 1 through a connecting mechanism. Through the above-mentioned structural setting, several blades 4 are connected to the transmission shaft 1 through a connecting mechanism, that is, a wind wheel is formed. Such a wind wheel is uniformly stressed when rotating, and the rotation center of the wind wheel coincides with the rotation center of the transmission shaft 1, and no eccentric vibration will be generated; the blades 4 on the wind wheel are arranged in a spiral shape, and the blades 4 are not on the same plane, staggered up and down, which can greatly enhance the wind catching ability of each blade 4 on the wind wheel; the force on the wind wheel is more continuous, the conversion efficiency is more efficient, and the problem of the vertical axis fan being difficult to start and the dead angle in the windward direction when starting can be eliminated, and the resonance phenomenon caused by pressure changes can be reduced, and the stability can be improved. In this embodiment, the spiral shape formed by several blades 4 is preferably a cylindrical spiral shape.

[0036] Further, the connection mechanism includes an upper wheel disc 51, a lower wheel disc 52 and a connecting piece, wherein the upper wheel disc 51 is fixedly sleeved on the outer side of the upper part of the transmission shaft 1, and the lower wheel disc 52 is fixedly sleeved on the outer side of the lower part of the transmission shaft 1. A plurality of the fan blades 4 are fixedly connected to the connecting piece, and the connecting piece is fixedly connected to the upper wheel disc 51 and the lower wheel disc 52 respectively. More specifically, the upper wheel disc 51 and the lower wheel disc 52 are parallel to each other and have the same diameter. The above-mentioned structural arrangement facilitates the fan blades 4 to be fixedly connected to the transmission shaft 1.

[0037] Further, the connecting member includes an upper connecting seat 53, a lower connecting seat 54 and a plurality of wind wheel cross-brackets 55, the upper connecting seat 53 and the lower connecting seat 54 are parallel to each other, and the upper connecting seat 53 and the lower connecting seat 54 are both arranged in a cylindrical spiral shape from top to bottom around the transmission shaft 1, the upper end of the fan blade 4 is fixed to the upper connecting seat 53, the lower end of the fan blade 4 is fixed to the lower connecting seat 54, the tail end of the lower connecting seat 54 is fixed to the lower wheel disc 52, the head end of the upper connecting seat 53 is fixed to the upper wheel disc 51, the wind wheel cross-brackets 55 are perpendicular to the transmission shaft 1 and are fixedly connected to the transmission shaft 1, one end of the wind wheel cross-brackets 55 is fixed to the upper connecting seat 53, and the other end of the wind wheel cross-brackets 55 is fixed to the lower connecting seat 54. Through the above-mentioned structural arrangement, the connection between the fan blade 4 and the transmission shaft 1 is more stable, the wind wheel formed by the two has better integrity, and does not affect the wind catching ability of the fan blade 4.

[0038] Furthermore, the heights of the blades 4 are the same, and the pitch of the upper connecting seat 53 is twice the height of the blades 4. With the above-mentioned structural arrangement, in the windward direction, the front blades 4 and the rear blades 4 do not overlap each other, and will not block the airflow or interfere with the airflow direction. In this embodiment, the blades 4 are preferably of the same size.

[0039] Further, if Figure 3 As shown, the cross-sectional shape of the fan blade 4 is a water drop-shaped airfoil, and more specifically, the airfoil installation angle of each fan blade 4 is the same. Through the above structural arrangement, the resistance of the fan blade 4 during rotation can be reduced, and the lift of the wind wheel can be increased.

[0040] Furthermore, the present invention further comprises a machine room 6, an upper bearing assembly 7 and a lower bearing assembly 8, the fan mounting frame 2 comprises a fan column 21 and a cross bracket 22, the generator 3 is mounted in the machine room 6, the lower end of the fan column 21 is fixed to a mounting surface, the mounting surface in this embodiment is the ground, a flange is provided at the lower end of the fan column 21, the flange is mounted on the ground, the upper end of the fan column 21 is fixedly connected to the first end of the cross bracket 22,

[0041] The upper bearing assembly 7 comprises an upper bearing seat 71, an upper bearing 72, an upper oil seal 73, an upper connecting shaft 74 and an adjusting nut 75. The upper bearing 72 and the upper oil seal 73 are sequentially mounted in the inner cavity of the upper bearing seat 71. The upper end of the upper connecting shaft 74 passes through the upper oil seal 73 and the upper bearing 72 in sequence and is locked and connected with the adjusting nut 75. The lower end of the upper connecting shaft 74 is fixedly connected to the upper end of the transmission shaft 1. The upper bearing seat 71 is connected to the second end of the cross bracket 22 through the first mounting group 9. More specifically, the upper connecting shaft 74 is fixed to the inner ring of the upper bearing 72. The lower end of the upper connecting shaft 74 is provided with a flange. The upper and lower ends of the transmission shaft 1 are both provided with flanges. The lower end of the upper connecting shaft 74 and the upper end of the transmission shaft 1 are fixed by screws.

[0042] The lower bearing assembly 8 includes a lower bearing seat 81, a lower bearing 82, a lower oil seal 83 and a lower connecting shaft 84. The lower bearing 82 and the lower oil seal 83 are sequentially installed in the inner cavity of the lower bearing seat 81. The upper end of the lower connecting shaft 84 is fixedly connected to the lower end of the transmission shaft 1. The lower end of the lower connecting shaft 84 passes through the top of the machine room 6, the lower bearing 82 and the lower oil seal 83 in sequence and is connected to the generator 3 through the transmission assembly. The lower bearing seat 81 is connected to the top of the machine room 6 through the second installation group 10. Specifically, the upper end of the lower connecting shaft 84 is provided with a flange, and the upper end flange of the lower connecting shaft 84 corresponds to the lower end flange of the transmission shaft 1 and is fixed with screws. The above structural arrangement is conducive to the rotation of the transmission shaft 1 in the vertical direction.

[0043] Further, the first mounting group 9 includes a first mounting plate 91 fixed to the second end of the cross bracket 22, an upper buffer connecting plate 92, two suspension rod seats 93, two suspension rods 94, two upper buffer springs 95, two upper spring retaining rings 96 and two upper nuts 97. The upper end of the suspension rod 94 is set to be hemispherical, and the lower end of the suspension rod 94 is provided with a thread. The suspension rod seat 93 is provided with a groove matching the upper end of the suspension rod 94. Specifically, the groove is a hemispherical groove. When installing, the suspension rod seat 93 is placed on the upper side of the suspension rod 94 mounting plate, and the lower end of the suspension rod 94 passes through the hemispherical groove, the suspension rod 94 mounting plate, the upper buffer spring 95 and the upper spring retaining ring 96 in sequence and is threadedly connected to the upper nut 97. The nut 97 adjusts the tension of the upper buffer spring 95, the upper end of the suspension rod 94 is placed in the groove, the upper end of the upper buffer spring 95 is against the upper buffer connecting plate 92, the lower end of the upper buffer spring 95 is against the upper spring retaining ring 96, and the end of the upper bearing seat 71 away from the transmission shaft 1 is fixed to the lower side of the upper buffer connecting plate 92; through the above-mentioned structural arrangement, the upper end of the suspension rod 94 can rotate freely within the range limited by the groove, and the upper buffer spring 95 has a buffering effect on the upper bearing assembly 7 and the transmission shaft 1. When the wind wheel rotates, a gyro effect is generated. The above-mentioned structure automatically adjusts the rotation center of the wind wheel to coincide with the center line of the transmission shaft 1, and applies upward lift to the upper buffer spring 95, which can reduce the impact of sudden loads on the wind wheel.

[0044] The second installation group 10 includes a second installation plate 101 fixed to the top of the machine room 6, a lower buffer connecting plate 102, two spring guide rods 103, two lower buffer springs 104, two lower spring retaining rings 105 and two lower nuts 106, the upper end of the spring guide rod 103 is provided with a thread, the lower end of the spring guide rod 103 is fixed with a limit block 107, the lower buffer connecting plate 102 is provided with a through hole for the lower connecting shaft 84 to pass through, and the end of the lower bearing seat 81 away from the generator 3 is fixed to the On the lower side of the lower buffer connecting plate 102, the upper end of the spring guide rod 103 passes through the lower buffer connecting plate 102, the lower buffer spring 104 and the lower spring retaining ring 105 in sequence and is threadedly connected with the lower nut 106. The lower nut 106 is used to adjust the tension of the lower buffer spring 104. The upper end of the lower buffer spring 104 abuts against the lower spring retaining ring 105, the lower end of the lower buffer spring 104 abuts against the second mounting plate 101, and the limit block 107 abuts against the lower buffer connecting plate 102. Through the above structural arrangement, the impact of sudden load on the wind wheel can be further reduced.

[0045] Furthermore, the transmission assembly includes a universal coupling 11 and a gear transmission 12, the upper end of the universal coupling 11 is connected to the lower end of the lower connecting shaft 84, the lower end of the universal coupling 11 is connected to the input end of the gear transmission 12, and the output end of the gear transmission 12 is connected to the generator 3. Through the above-mentioned structural arrangement, the torque can be effectively transmitted, driving the generator 3 to rotate and output electrical energy.

[0046] Furthermore, the fan column 21 is connected with three transverse brackets 22, and specifically, the three transverse brackets 22 are evenly distributed along the circumferential direction, and each transverse bracket 22 corresponds to a wind wheel. The above structural arrangement can improve efficiency.

[0047] Example 2

[0048] like Figure 8 As shown, the present invention provides a vertical axis wind turbine generator set, which is basically the same as the structure of embodiment 1, except that the connecting member does not have an upper connecting seat 53, a lower connecting seat 54 and a wind rotor cross support rod 55. The connecting member of this embodiment includes a plurality of cables 56, which are parallel to the transmission shaft 1 and are evenly distributed around the transmission shaft 1. The upper end of the cables 56 is fixed to the upper wheel disc 51, and the lower end of the cables 56 is fixed to the lower wheel disc 52. The wind blades 4 are fixed to the cables 56. More specifically, the cables 56 are steel cables 56, and two cables 56 form a group. The two cables 56 pass through the upper and lower parts of the wind blades 4 respectively. Through the above structural arrangement, the spiral distribution of the wind blades 4 can also be achieved.

[0049] The above description is only a preferred embodiment of the present invention, so all equivalent changes or modifications made according to the structure, characteristics and principles described in the scope of the patent application of the present invention are included in the scope of the patent application of the present invention.

Claims

1. A vertical axis wind turbine generator set, It is characterized in that It comprises a transmission shaft (1), a fan mounting frame (2), a generator (3) and a plurality of fan blades (4), wherein the upper end of the transmission shaft (1) is rotationally connected to the fan mounting frame (2), and the lower end of the transmission shaft (1) is transmission-connected to the generator (3); The plurality of fan blades (4) are parallel to each other in the vertical direction, are arranged in sequence with a front-to-back spacing, and are distributed in a spiral shape from top to bottom with the center line of the transmission shaft (1) as the center line, the upper fan blades (4) and the lower fan blades (4) are arranged staggered, and the plurality of fan blades (4) are fixed to the transmission shaft (1) via a connecting mechanism.

2. The vertical axis wind turbine generator set according to claim 1, It is characterized in that The connecting mechanism comprises an upper wheel disc (51), a lower wheel disc (52) and a connecting piece, wherein the upper wheel disc (51) is fixedly sleeved on the outer side of the upper part of the transmission shaft (1), and the lower wheel disc (52) is fixedly sleeved on the outer side of the lower part of the transmission shaft (1); a plurality of the fan blades (4) are fixedly connected to the connecting piece, and the connecting piece is fixedly connected to the upper wheel disc (51) and the lower wheel disc (52) respectively.

3. The vertical axis wind turbine generator set according to claim 2, It is characterized in that The connecting member comprises an upper connecting seat (53), a lower connecting seat (54) and a plurality of wind wheel cross-bracing rods (55); the upper connecting seat (53) and the lower connecting seat (54) are parallel to each other; the upper connecting seat (53) and the lower connecting seat (54) are both arranged in a cylindrical spiral shape around the transmission shaft (1) from top to bottom; the upper end of the wind blade (4) is fixed to the upper connecting seat (53); and the lower end of the wind blade (4) is fixed to the lower connecting seat (54). 4), the tail end of the lower connecting seat (54) is fixed to the lower wheel disc (52), the head end of the upper connecting seat (53) is fixed to the upper wheel disc (51), the wind wheel cross support rod (55) and the transmission shaft (1) are perpendicular to each other and fixedly connected to the transmission shaft (1), one end of the wind wheel cross support rod (55) is fixed to the upper connecting seat (53), and the other end of the wind wheel cross support rod (55) is fixed to the lower connecting seat (54).

4. The vertical axis wind turbine generator set according to claim 3, It is characterized in that The heights of the fan blades (4) are the same, and the pitch of the upper connecting seat (53) is twice the height of the fan blades (4).

5. The vertical axis wind turbine generator set according to claim 1, It is characterized in that The connecting member comprises a plurality of cables (56), the plurality of cables (56) are parallel to the transmission shaft (1), and the plurality of cables (56) are evenly distributed around the transmission shaft (1), the upper ends of the cables (56) are fixed to the upper wheel disc (51), the lower ends of the cables (56) are fixed to the lower wheel disc (52), and the fan blades (4) are fixed to the cables (56).

6. The vertical axis wind turbine generator set according to claim 1, It is characterized in that The cross-sectional shape of the fan blade (4) is a water drop-shaped airfoil.

7. A vertical axis wind turbine generator set according to any one of claims 1 to 6, It is characterized in that It also includes a machine room (6), an upper bearing assembly (7) and a lower bearing assembly (8); the fan mounting frame (2) includes a fan column (21) and a cross bracket (22); the generator (3) is installed in the machine room (6); the lower end of the fan column (21) is fixed to the mounting surface; the upper end of the fan column (21) is fixedly connected to the first end of the cross bracket (22); The upper bearing assembly (7) comprises an upper bearing seat (71), an upper bearing (72), an upper oil seal (73), an upper connecting shaft (74) and an adjusting nut (75); the upper bearing (72) and the upper oil seal (73) are sequentially mounted in the inner cavity of the upper bearing seat (71); the upper end of the upper connecting shaft (74) passes through the upper oil seal (73) and the upper bearing (72) in sequence and is locked and connected with the adjusting nut (75); the lower end of the upper connecting shaft (74) is fixedly connected to the upper end of the transmission shaft (1); and the upper bearing seat (71) is connected to the second end of the cross bracket (22) through a first mounting group (9); The lower bearing assembly (8) comprises a lower bearing seat (81), a lower bearing (82), a lower oil seal (83) and a lower connecting shaft (84); the lower bearing (82) and the lower oil seal (83) are sequentially mounted in the inner cavity of the lower bearing seat (81); the upper end of the lower connecting shaft (84) is fixedly connected to the lower end of the transmission shaft (1); the lower end of the lower connecting shaft (84) sequentially passes through the top of the machine room (6), the lower bearing (82) and the lower oil seal (83) and is then transmission-connected to the generator (3) through a transmission assembly; the lower bearing seat (81) is connected to the top of the machine room (6) through a second mounting group (10).

8. The vertical axis wind turbine generator set according to claim 7, It is characterized in that The first installation group (9) comprises a first installation plate 91 fixed to the second end of the cross bracket (22), an upper buffer connecting plate 92, a plurality of suspension rod seats (93), a plurality of suspension rods (94), a plurality of upper buffer springs (95), a plurality of upper spring retaining rings (96) and a plurality of upper nuts (97). The upper end of the suspension rod (94) is set to be spherical or hemispherical, the lower end of the suspension rod (94) is provided with a thread, and the suspension rod seat (93) is provided with a groove matching the upper end of the suspension rod (94). When installing, the suspension rod seat (93) is placed on the upper side of the suspension rod (94) installation plate, and the lower end of the suspension rod (94) passes through the upper and lower ends of the suspension rods (94) in sequence. The hemispherical groove, the suspension rod (94) mounting plate, the upper buffer spring (95) and the upper spring retaining ring (96) are then threadedly connected to the upper nut (97); the upper end of the suspension rod (94) is placed in the groove; the upper end of the upper buffer spring (95) abuts against the upper buffer connecting plate 92; the lower end of the upper buffer spring (95) abuts against the upper spring retaining ring (96); the suspension rod seat (93), the suspension rod (94), the upper buffer spring (95), the upper spring retaining ring (96) and the upper nut (97) correspond to each other one by one; and the end of the upper bearing seat (71) away from the transmission shaft (1) is fixed to the lower side of the upper buffer connecting plate 92; The second installation group (10) comprises a second installation plate (101) fixed to the top of the machine room (6), a lower buffer connection plate (102), a plurality of spring guide rods (103), a plurality of lower buffer springs (104), a plurality of lower spring retaining rings (105) and a plurality of lower nuts (106); the upper end of the spring guide rod (103) is provided with a thread; the lower end of the spring guide rod (103) is fixed with a limit block (107); the lower buffer connection plate (102) is provided with a through hole for the lower connecting shaft (84) to pass through; and the end of the lower bearing seat (81) away from the generator (3) is fixed to the lower buffer connection plate. The lower side of the lower buffer connecting plate (102), the upper end of the spring guide rod (103) passes through the lower buffer connecting plate (102), the lower buffer spring (104) and the lower spring retaining ring (105) in sequence and is threadedly connected with the lower nut (106), the upper end of the lower buffer spring (104) abuts against the lower spring retaining ring (105), the lower end of the lower buffer spring (104) abuts against the second mounting plate (101), the limit block (107) abuts against the lower buffer connecting plate (102), and the spring guide rod (103), the lower buffer spring (104), the lower spring retaining ring (105) and the lower nut (106) correspond to each other one by one.

9. The vertical axis wind turbine generator set according to claim 7, It is characterized in that The transmission assembly comprises a universal coupling (11) and a gear transmission (12), the upper end of the universal coupling (11) being connected to the lower end of the lower connecting shaft (84), the lower end of the universal coupling (11) being connected to the input end of the gear transmission (12), and the output end of the gear transmission (12) being connected to the generator (3).

10. The vertical axis wind turbine generator set according to claim 7, It is characterized in that The fan column (21) is connected to two or more transverse brackets (22).

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