Wind power generation device

Abstract

The invention relates to the technical field of wind power generation devices, in particular to a wind power generation device. The storage bin is provided with a ventilation opening; the impeller assembly comprises a cross-flow impeller and an axial-flow impeller, the cross-flow impeller is rotationally installed in the shell, and a rotating shaft core of the cross-flow impeller is vertically arranged; the turnover device comprises a turnover frame and a driver in transmission connection with the turnover frame, and the axial flow impeller is rotationally installed on the turnover frame; the generator is mounted on the turnover frame, and the axial flow impeller is in transmission connection with the generator; the driver is used for driving the overturning frame to rotate to a preset working state, and comprises a horizontal working state, the axial flow impeller and the cross-flow impeller are coaxially coupled, and the axial flow impeller is contained in the shell; and in the vertical working state, the axial flow impeller and the cross-flow impeller are decoupled, a rotating shaft core of the axial flow impeller is transversely arranged, and the axial flow impeller is moved out of the outer side of the shell. And the device can adapt to two working conditions of standing and moving.

Description

Technical Field

[0001] The present invention relates to the technical field of wind power generation devices, and in particular to a wind power generation device. Background Art

[0002] With the development of renewable energy, wind power generation, as a clean and renewable energy form, has been increasingly valued. Traditional wind turbines are adapted to a single working condition. When placed at the mobile end, the impeller is usually stored in the casing to prevent the impeller from contacting with external objects in relative motion; when placed at the stationary end, the impeller is often placed high and exposed to the outside.

[0003] However, when the working environment has both mobile and stationary working conditions, the existing wind power generation facilities cannot make a comprehensive adjustment. Summary of the invention

[0004] In order to overcome the above-mentioned deficiencies of the prior art, the present invention provides a wind power generation device that can adapt to both stationary and mobile working conditions.

[0005] In order to achieve the above object, the present invention is implemented through the following technical solutions: A wind power generation device, comprising: A storage bin, wherein a vent is provided on the storage bin; An impeller assembly, the impeller assembly comprising a crossflow impeller and an axial flow impeller, the crossflow impeller being rotatably mounted in the storage bin, and the rotating shaft core of the crossflow impeller being vertically arranged; A turning device, the turning device comprising a turning frame and a driver drivingly connected to the turning frame, the axial flow impeller being rotatably mounted on the turning frame; A generator, wherein the generator is mounted on the turning frame; The driver is used to drive the flip frame to switch between a horizontal working state and a vertical working state, wherein: When in a horizontal working state, the cross-flow impeller is connected to the generator by transmission, and the axial flow impeller is stored in the storage bin; When in a vertical working state, the axial flow impeller is transmission-connected to the generator, the rotating shaft core of the axial flow impeller is arranged horizontally, and the axial flow impeller moves out of the outside of the storage bin.

[0006] It can be seen from the above technical solution that the present invention has the following beneficial effects: 1. The present invention provides a wind power generation device, the principle of which is that when the flip frame is in the horizontal working state, it is for mobile working conditions. At this time, the impeller assembly is stored in the storage bin as a whole, and the wind entering the storage bin drives the crossflow impeller to drive the axial flow impeller to rotate to drive the generator to work. The vertical working state is for static working conditions. At this time, the axial flow impeller is driven by the driver to rotate the flip frame until the axial flow impeller is flipped out of the storage bin, and the rotating shaft core of the axial flow impeller is in a horizontal position to receive axial wind energy. Therefore, a wind power generation device in the present application can adapt to both static and mobile working conditions.

[0007] 2. The present invention provides a wind power generation device. Compared with the axial flow impeller, the crossflow impeller has higher longitudinal compactness than the axial flow impeller, and the efficiency of the axial flow impeller in receiving wind energy is higher than that of the crossflow impeller. Therefore, the crossflow impeller is used to receive wind energy in the horizontal working state, which can improve the longitudinal compactness of the entire device and avoid excessive wind resistance; the axial flow impeller is used to receive wind energy in the vertical working state to improve the wind energy receiving efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 This is a schematic structural diagram of a wind power generation device in one embodiment of the present application; Figure 2 A rear view of a wind power generation device in one embodiment of the present application; Figure 3 A schematic diagram of a wind power generation device in an embodiment of the present application in a horizontal working state; Figure 4 for Figure 3 Schematic diagram of hidden storage compartment; Figure 5 For the corresponding Figure 4 A top view of Figure 6 A schematic diagram of a wind power generation device in an embodiment of the present application in a vertical working state; Figure 7 It is a transmission schematic diagram of a turning frame in an embodiment of the present application when it is in a horizontal working state; Figure 8 It is a transmission schematic diagram of a turning frame in an embodiment of the present application when it is in a vertical working state; Fig. 9 is a schematic diagram of an electromagnetic starting device in an embodiment of the present application; Fig.10 It is a structural schematic diagram of a cross-flow impeller in one embodiment of the present application; Fig.11 It is a structural schematic diagram of an axial flow impeller in an embodiment of the present application; Fig.12 A schematic diagram of the operation of a wind direction detection device in an embodiment of the present application; Fig.13 This is a schematic diagram of the installation of a roller blind in one embodiment of the present application.

[0009] Fig.14 This is a transmission schematic diagram of the turning frame in Embodiment 3 of the present application when it is in a vertical working state; Fig.15 This is a transmission schematic diagram of a turning frame in Embodiment 3 of the present application when it is in a horizontal working state; Fig.16 It is a schematic diagram of the sleeve connection structure between the first transmission shaft and the axial flow impeller in Embodiment 3 of the present application.

[0010] In the figure: 1-storage compartment; 101-air inlet; 1011-air guide blades; 102-air outlet; 11-rolling curtain; 111-curtain shaft; 112-curtain body; 113-rolling curtain motor; 2-impeller assembly; 21-crossflow impeller; 210-cavity; 211-convex portion; 2111-introduction slope; 22-axial flow impeller; 221-groove; 3-turning device; 31-turning frame; 311-shaft cylinder; 3111-two-part housing; 312-gearbox; 3121-speed gear set; 3122-front box; 3123-rear box; 313-guide rail; 3130-slideway; 32-driver; 4-generator; 41-first transmission shaft; 42-second transmission shaft; 43-bevel gear; 5- Wind direction detection device; 6-rotating seat; 61-seat body; 62-steering drive; 7-electromagnetic starting device; 71-driving rotor. DETAILED DESCRIPTION

[0011] Example 1 A wind power generation device, comprising: Figure 1 The storage bin 1 shown has a vent on its side wall; Combination Figure 5 The impeller assembly 2 shown includes a crossflow impeller 21 and an axial flow impeller 22. The crossflow impeller 21 is rotatably mounted in the storage bin 1, and the rotation axis of the crossflow impeller 21 is vertically arranged. Combination Figure 4 The turning device 3 shown in the figure comprises a turning frame 31 and a driver 32 which is transmission-connected with the turning frame 31, and the axial flow impeller 22 is rotationally mounted on the turning frame 31; Generator 4, generator 4 is installed on the turning frame 31; The driver 32 is used to drive the flip frame 31 to switch between a horizontal working state and a vertical working state, wherein: When in a horizontal working state, the cross-flow impeller 21 is connected to the generator 4 by transmission, and the axial flow impeller 22 is stored in the storage bin 1; When in the vertical working state, the axial flow impeller 22 is drivingly connected to the generator 4 , the rotating shaft core of the axial flow impeller 22 is arranged horizontally, and the axial flow impeller 22 moves out of the storage bin 1 .

[0012] Therefore, a wind power generation device in this embodiment can adapt to both stationary and mobile working conditions. Compared with the axial flow impeller 22, the longitudinal compactness of the crossflow impeller 21 is higher than that of the axial flow impeller 22, and the efficiency of the axial flow impeller 22 in receiving wind energy is higher than that of the crossflow impeller 21. Therefore, the crossflow impeller 21 is used to receive wind energy in the horizontal working state, which can improve the longitudinal compactness of the entire device and avoid excessive wind resistance; the axial flow impeller 22 is used to receive wind energy in the vertical working state to improve the wind energy receiving efficiency.

[0013] Specifically, an opening is provided at the upper end of the storage bin 1, and the opening is shielded by a roller blind 11, and the roller blind 11 is retracted to open and close the opening of the storage bin 1. In the horizontal working state, the opening of the storage bin 1 is closed, and in the vertical working state, the opening of the storage bin 1 is opened, and the axial flow impeller 22 extends from the opening to the outside of the storage bin 1. In one embodiment, a wind power generation device is installed on a car, and the horizontal working state corresponds to the driving state of the car, and the vertical working state corresponds to the parking state of the car. In this embodiment, the extension trajectory of the top surface of the storage bin 1 is a streamlined arc with a high front and a low back, so as to reduce wind resistance in the horizontal working state.

[0014] Combination Figure 5 and Figure 7 As shown, in this embodiment, a cavity 210 with an axial end opening is provided in the crossflow impeller 21, and when in a horizontal working state, the axial flow impeller 22 is arranged in the cavity 210 to improve the compactness of the device when in a horizontal working state. During the process of switching from a vertical working state to a horizontal working state, the axial flow impeller 22 enters the cavity 210 from the open end of the cavity 210.

[0015] In this embodiment, the impeller assemblies 2 are arranged in pairs, and a pair of impeller assemblies 2 are arranged at intervals in the transverse direction. Compared with increasing the radial size of the impeller, the pair of impeller assemblies 2 arranged at intervals in the transverse direction can improve the compactness of the device in the longitudinal direction while improving the power generation efficiency.

[0016] Combination Figure 1 and Figure 3As shown, in this embodiment, the vent includes an air inlet 101 and an air outlet 102 respectively arranged at the front and rear sides of the storage bin 1, and an air guide blade 1011 is arranged on the air inlet 101, and the air guide blade 1011 can be rotatably adjusted and installed at the air inlet 101. When in a horizontal working state, the wind enters the storage bin 1 from the air inlet 101 and is discharged from the storage bin 1 from the air outlet 102, and in this process, the crossflow impeller 21 is driven to rotate. The angular position of the air guide blade 1011 is rotated to change the projection size of the opening of the air inlet 101 corresponding to the air inlet direction, thereby adjusting the air volume of the air inlet.

[0017] Furthermore, a cooling channel 10 is included, and the air inlet end of the cooling channel 10 is connected to the outside of the storage bin 1 corresponding to the windward direction; the air outlet end of the cooling channel 10 is arranged in the storage bin 1. The cooling channel 10 is used to cool the heat-generating components in the storage bin 1. Specifically, in this embodiment, the air outlet end of the cooling channel 10 faces the gearbox 312, and in other embodiments, the air outlet end of the cooling channel 10 faces the generator 4.

[0018] Combination Figure 7 and Figure 8 As shown, in this embodiment, it also includes a first transmission shaft 41 and a second transmission shaft 42. The rotating axis cores of the axial flow impeller 22 and the first transmission shaft 41 coincide with each other, and the first transmission shaft 41 and the second transmission shaft 42 are connected by a pair of bevel gears 43 that mesh with each other; the first transmission shaft 41 is used to transmit the torque of the axial flow impeller 22 or the cross-flow impeller 21 to the second transmission shaft 42.

[0019] The flip frame 31 includes a shaft cylinder 311 and a gearbox 312, the shaft cylinder 311 is connected to one side of the gearbox 312, the second transmission shaft 42 is rotatably installed in the shaft cylinder 311, and a speed change gear set 3121 is provided in the gearbox 312, which is connected to the generator 4, and the second transmission shaft 42 is connected to the speed change gear set 3121 at one end away from the first transmission shaft 41; when in a vertical working state, the shaft cylinder 311 extends out of the storage bin 1 at one end corresponding to the axial flow impeller 22, and the gearbox 312 is in the storage bin 1. In this embodiment, the second transmission shaft 42 plays a role in raising the axial flow impeller 22 in the vertical working state. In this embodiment, the shaft cylinder 311 includes a pair of two-part shells 3111 spliced ​​to each other, and the gearbox 312 includes a front box 3122 and a rear box 3123 spliced ​​to each other, and the pair of two-part shells 3111 are respectively connected to the front box 3122 and the rear box 3123. Based on the above structure, the flip device 3 has the advantage of being easy to disassemble and assemble.

[0020] Example 2 On the basis of Embodiment 1, in this embodiment, the axial flow impeller 22 is drivingly connected to the generator 4 . Specifically, the axial flow impeller 22 is installed on the first transmission shaft 41 .

[0021] When the overturning frame 31 is in a horizontal working state, Figures 3 to 5 as well as Figure 7 As shown, the cross-flow impeller 21 is coaxially coupled with the axial flow impeller 22 to be transmission-connected with the generator 4; When the turnover frame 31 is in the vertical working state, the axial flow impeller 22 and the cross flow impeller 21 are decoupled.

[0022] like Figure 6 and Figure 8 In the vertical working state shown, the axial flow impeller 22 and the cross flow impeller 21 are decoupled.

[0023] Combination Fig.10 and Fig.11 As shown, in this embodiment, a connection structure is provided between the axial flow impeller 22 and the cross-flow impeller 21, and the connection structure includes a convex portion 211 and a groove 221 respectively provided on a pair of connection bodies, and the shapes of the convex portion 211 and the groove 221 are adapted to each other. When in a horizontal working state, the convex portion 211 is embedded in the groove 221 to transmit torque. In this embodiment, the convex portion 211 is provided on the cross-flow impeller 21, and the groove 221 is provided on the axial flow impeller 22. In other embodiments, the settings may be reversed. Specifically, the convex portion 211 is provided at the bottom of the cavity 210. In this embodiment, the cross-sectional shape of the convex portion 211 is rotationally symmetrical, and the circumferential outer edge of the front end of the convex portion 211 is provided with an introduction slope 2111. Based on the above structure, the convex portion 211 is narrow in front and wide in the back, and the shape of the groove 221 is adapted to the wide end of the convex portion 211. Therefore, in the process of switching from the vertical working state to the horizontal working state, on the one hand, it can ensure that the front end of the convex portion 211 can enter the groove 221, and on the other hand, if the circumferential positions of the convex portion 211 and the groove 221 are staggered, the axial flow impeller 22 and the cross-flow impeller 21 can be rotated to the circumferential positions corresponding to each other through the fit of the introduction slope 2111 and the side wall of the groove 221, so as to ensure that they can automatically switch to the horizontal working state. In this embodiment, the cross-sectional shape of the convex portion 211 is a triangle as a whole, the angle of the corresponding triangle is rounded, and the generatrix of the introduction slope 2111 is arc-shaped.

[0024] Based on the above structure, a wind power generation device has the following principle: the horizontal working state is for the mobile working condition, at this time, the impeller assembly 2 is stored in the storage bin 1 as a whole, and the wind entering the storage bin 1 drives the crossflow impeller 21 to drive the first transmission shaft 41 to rotate, and then drives the second transmission shaft 42 to rotate to drive the generator 4 to work. In the horizontal working state, the main function of the coaxial coupling of the axial flow impeller 22 and the crossflow impeller 21 is to enable the axial flow impeller 22 to share the power generation transmission system of the crossflow impeller 21; at this time, the axial flow impeller 22 can be decoupled from the first transmission shaft 41 to reduce the kinetic energy consumption of the axial flow impeller 22, thereby improving the power generation conversion efficiency of the crossflow impeller 21. The vertical working state is for the stationary working condition, at this time, the axial flow impeller 22 drives the flip frame 31 to rotate through the driver 32 to flip the axial flow impeller 22 out of the storage bin 1, and the rotating shaft core of the axial flow impeller 22, that is, the first transmission shaft 41, is in a horizontal position to receive axial wind energy.

[0025] Example 3 The defect of Example 2 is that in the horizontal working state, the axial flow impeller 22 and the cross-flow impeller 21 are coaxially coupled, and at this time the axial flow impeller 22 does not participate in the function of receiving wind energy, which will lead to the consumption of wind energy.

[0026] In order to further improve the wind energy conversion efficiency, based on the first embodiment, this embodiment further includes a floating drive device. When the flip frame 31 switches between the horizontal working state and the vertical working state, the floating drive device is used to drive the first transmission shaft 41 to move axially, so that: Combination Fig.15 As shown, when the flip frame 31 is in a horizontal working state, the first transmission shaft 41 is coupled with the crossflow impeller 21 to transmit torque, and the first transmission shaft 41 is decoupled from the axial flow impeller 22; Combination Fig.14 As shown, when the turnover frame 31 is in the vertical working state, the first transmission shaft 41 is coupled to the axial flow impeller 22 to transmit torque, and the first transmission shaft 41 is decoupled from the cross-flow impeller 21 .

[0027] In this embodiment, a transmission connection seat 212 is provided on the crossflow impeller 21. When the flip frame 31 is in a horizontal working state, the transmission connection seat 212 and the first transmission shaft 41 are mutually sleeved to form a transmission body. The transmission body axially passes through the axial flow impeller 22. The axial flow impeller 22 is provided with a through hole 220 corresponding to the transmission body. Specifically, in this embodiment, when the flip frame 31 is in a horizontal working state, the transmission connection seat 212 passes through the through hole 220. In other embodiments, the first transmission shaft 41 can also penetrate the through hole 220. In this embodiment, the sleeved connection structure between the transmission connection seat 212 and the first transmission shaft 41 can refer to the connection structure provided between the axial flow impeller 22 and the crossflow impeller 21 in Example 2. It should be noted that the transmission connecting piece on the first transmission shaft 41, namely the bevel gear 43, and the first transmission shaft 41 are a sliding set. When the first transmission shaft 41 moves axially, the bevel gear 43 is axially stationary. Specifically, an extension tube is extended from one end of the shaft tube 311 away from the gear box 312, and the first transmission shaft 41 is arranged in the extension tube. A bearing is installed in the extension tube, and the bevel gear 43 is connected to the inner ring of the bearing.

[0028] In this embodiment, the floating drive device includes a transmission connection seat 212 and a return spring 431, and the return spring 431 is axially abutted against the first transmission shaft 41; When the flip frame 31 is in the vertical working state, the return spring 431 axially presses the first transmission shaft 41 until the first transmission shaft 41 is sleeved with the axial flow impeller 22; When the turnover frame 31 is in a horizontal working state, the transmission connection seat 212 axially pushes the first transmission shaft 41 until the first transmission shaft 41 is separated from the axial flow impeller 22 .

[0029] Combination Fig.16 As shown, specifically, a concave-convex fitting sleeve structure is provided between the first transmission shaft 41 and the axial flow impeller 22 .

[0030] Example 4 Combination Figure 5 and Fig.12 As shown, based on Embodiment 1, 2 or 3, this embodiment further includes: A wind direction detection device 5 is disposed outside the storage bin 1 and is used to detect wind direction; The rotating seat 6 includes a seat body 61 and a steering driver 62. The steering driver 62 is connected to the seat body 61 in a transmission manner, and the storage bin 1 is mounted on the seat body 61; The controller (not shown), the wind direction detection device 5 and the rotating seat 6 are connected to the controller for communication.

[0031] Based on the above device, the controller is used to control the steering driver 62 to drive the seat body 61 to rotate until the impeller assembly 2 faces the wind direction according to the wind direction parameters detected by the wind direction detection device 5. A wind power generation device in this embodiment can adjust the circumferential direction according to the wind direction so that the impeller assembly 2 faces the wind direction, forming a wind direction adjustment system to improve the efficiency of wind energy reception. It should be noted that the wind direction detection device 5 is a prior art, which usually integrates the two functions of sensing wind direction and wind speed to provide more comprehensive wind direction parameter information. Specifically, in this embodiment, when in the vertical working state, the wind direction adjustment system starts to work.

[0032] Example 5 Combination Fig. 9 As shown, based on embodiment 1 or 2, this embodiment further includes: A wind speed detection sensor is disposed outside the storage bin 1 and is used to detect wind speed. Specifically, the wind speed detection sensor is integrated with the wind direction detection device 5, which is a prior art; The electromagnetic starting device 7 includes a driving rotor 71, which is connected to the axial flow impeller 22 by transmission. The control unit, the electromagnetic starting device 7 and the wind speed detection sensor are communicatively connected with the control unit.

[0033] The control unit is used to receive the wind speed signal detected by the wind speed detection sensor, compare the wind speed signal with a preset value, and if the wind speed is too small, control the electromagnetic starting device 7 to drive the driving rotor 71 to rotate, thereby providing a starting torque for the axial flow impeller 22 .

[0034] In the vertical working state, if there is insufficient wind force, the axial flow impeller 22 cannot rotate due to insufficient kinetic energy. When the wind speed detection sensor detects that the wind volume is too small, the control unit drives the electromagnetic starting device to assist the fan to rotate, and the axial flow impeller 22 continues to rotate through natural wind. In this embodiment, the driving rotor 71 is coaxially connected to the first transmission shaft 41, and the stator component of the electromagnetic starting device 7 is sleeved on the outside of the first transmission shaft 41. The electromagnetic starting device 7 can also cooperate with the current detection module. If the system current is detected to be abnormal, the electromagnetic starting device 7 brakes the driving rotor 71.

[0035] Example 6 On the basis of Example 5, in this embodiment, the rolling curtain 11 is installed on the turning frame 31, and a pair of guide rails 313 are provided on the turning frame 31, and a slide groove 3130 is provided on the guide rails 313. The rolling curtain 11 includes a curtain shaft 111 rotatably installed on 31 and a curtain body 112 arranged on the curtain shaft 111, a pair of side edges of the curtain body 112 are slidably arranged in a pair of slide grooves 3130, and the curtain shaft 111 is driven to rotate by the rolling curtain motor 113.

[0036] In this embodiment, the roller curtain 11 is placed on the rear side of the exposed end of the axial flow impeller 22 in the vertical working state. If the detected wind speed is less than a preset value, the curtain body 112 is rolled up to the outside of the axial projection area of ​​the axial flow impeller 22; if the detected wind speed is greater than the preset value, the curtain body 112 is unfolded to be axially opposite to the axial flow impeller 22, and the rotating seat 6 is started to turn the curtain body 112 to the windward side, thereby blocking the wind and stopping the rotation of the axial flow impeller 22.

[0037] The technical principles of the present invention are described above in conjunction with specific embodiments. These descriptions are only for explaining the principles of the present invention and cannot be interpreted as limiting the scope of protection of the present invention in any way. Based on the explanations herein, those skilled in the art can associate other specific implementations of the present invention without creative work, and these methods will fall within the scope of protection of the present invention.

Claims

1. A wind power generation device, characterized in that: include: A storage bin (1), wherein the storage bin (1) is provided with a vent; An impeller assembly (2), the impeller assembly (2) comprising a cross-flow impeller (21) and an axial-flow impeller (22), the cross-flow impeller (21) being rotatably mounted in the storage bin (1), and the rotating shaft core of the cross-flow impeller (21) being arranged vertically; A turning device (3), the turning device (3) comprising a turning frame (31) and a driver (32) drivingly connected to the turning frame (31), the axial flow impeller (22) being rotatably mounted on the turning frame (31); A generator (4), wherein the generator (4) is mounted on the turning frame (31); The driver (32) is used to drive the turning frame (31) to switch between a horizontal working state and a vertical working state, wherein: When in a horizontal working state, the cross-flow impeller (21) is in driving connection with the generator (4), and the axial flow impeller (22) is stored in the storage bin (1); When in a vertical working state, the axial flow impeller (22) is drivingly connected to the generator (4), the rotating shaft core of the axial flow impeller (22) is arranged horizontally, and the axial flow impeller (22) moves out of the outside of the storage bin (1).

2. A wind power generation device according to claim 1, characterized in that: The axial flow impeller (22) is drivingly connected to the generator (4); When the tilting frame (31) is in a horizontal working state, the cross-flow impeller (21) and the axial flow impeller (22) are coaxially coupled to be transmission-connected to the generator (4); When the turnover frame (31) is in a vertical working state, the axial flow impeller (22) and the cross-flow impeller (21) are decoupled.

3. A wind power generation device according to claim 2, characterized in that: A connection structure is provided between the axial flow impeller (22) and the cross-flow impeller (21), the connection structure comprising a convex portion (211) and a concave portion (221) respectively provided on a pair of connection bodies, the convex portion (211) and the concave portion (221) being adapted to each other in shape, and when in a horizontal working state, the convex portion (211) is embedded in the concave portion (221) to transmit torque.

4. A wind power generation device according to claim 3, characterized in that: The cross-sectional shape of the convex portion (211) is rotationally symmetrical, and a leading-in slope (2111) is provided at the circumferential outer edge of the front end of the convex portion (211).

5. A wind power generation device according to claim 2, characterized in that: It also comprises a first transmission shaft (41), the first transmission shaft (41) being transmission-connected to the generator (4), the axial flow impeller (22) being mounted on the first transmission shaft (41), and the first transmission shaft (41) and the axial flow impeller (22) having the same rotation axis.

6. A wind power generation device according to claim 1, characterized in that: It also includes a first transmission shaft (41), the first transmission shaft (41) being transmission-connected to the generator (4), and the first transmission shaft (41) and the axial flow impeller (22) having the same rotation axis; It also includes a floating drive device, and during the process of the flip frame (31) switching between the horizontal working state and the vertical working state, the floating drive device is used to drive the first transmission shaft (41) to move axially, so that: When the tilting frame (31) is in a horizontal working state, the first transmission shaft (41) is coupled to the cross-flow impeller (21) to transmit torque, and the first transmission shaft (41) is decoupled from the axial flow impeller (22); When the turnover frame (31) is in a vertical working state, the first transmission shaft (41) is coupled to the axial flow impeller (22) to transmit torque, and the first transmission shaft (41) is decoupled from the cross-flow impeller (21).

7. A wind power generation device according to claim 6, characterized in that: A transmission connection seat (212) is provided on the crossflow impeller (21). When the flip frame (31) is in a horizontal working state, the transmission connection seat (212) and the first transmission shaft (41) are sleeved together to form a transmission body, the transmission body axially passes through the axial flow impeller (22), and the axial flow impeller (22) is provided with a through hole (220) corresponding to the transmission body.

8. A wind power generation device according to claim 7, characterized in that: The floating drive device comprises a transmission connection seat (212) and a return spring (431), wherein the return spring (431) is axially abutted against the first transmission shaft (41); When the flip frame (31) is in a vertical working state, the return spring (431) axially presses the first transmission shaft (41) until the first transmission shaft (41) is sleeved with the axial flow impeller (22); When the turnover frame (31) is in a horizontal working state, the transmission connection seat (212) axially pushes the first transmission shaft (41) until the first transmission shaft (41) is separated from the axial flow impeller (22).

9. A wind power generation device according to claim 5 or 6, characterized in that: It also includes a second transmission shaft (42), wherein the first transmission shaft (41) and the second transmission shaft (42) are transmission-connected via a pair of mutually meshing bevel gears (43); The tilting frame (31) comprises a shaft cylinder (311) and a gearbox (312); the shaft cylinder (311) is connected to one side of the gearbox (312); the second transmission shaft (42) is rotatably mounted in the shaft cylinder (311); a speed change gear set (3121) drivingly connected to the generator (4) is provided in the gearbox (312); and the second transmission shaft (42) is drivingly connected to the speed change gear set (3121) at one end away from the first transmission shaft (41).

10. A wind power generation device according to claim 1, characterized in that: The cross-flow impeller (21) is provided with a cavity (210) with an opening at one axial end. When in a horizontal working state, the axial-flow impeller (22) is arranged in the cavity (210).

11. A wind power generation device according to claim 1, characterized in that: The impeller assemblies (2) are arranged in pairs, and a pair of the impeller assemblies (2) are arranged at intervals in the transverse direction.

12. A wind power generation device according to claim 9, characterized in that: The shaft cylinder (311) comprises a pair of two-part shells (3111) spliced ​​to each other, and the gearbox (312) comprises a front box body (3122) and a rear box body (3123) spliced ​​to each other, and the pair of two-part shells (3111) are respectively connected to the front box body (3122) and the rear box body (3123).

13. A wind power generation device according to claim 1, characterized in that: Also includes: A wind direction detection device (5), the wind direction detection device (5) being placed outside the storage bin (1) and used for detecting wind direction; A rotating seat (6), the rotating seat (6) comprising a seat body (61) and a steering driver (62), the steering driver (62) being in driving connection with the seat body (61), and the storage bin (1) being mounted on the seat body (61); A controller, wherein the wind direction detection device (5) and the rotating seat (6) are communicatively connected to the controller.

14. A wind power generation device according to claim 13, characterized in that: Also includes: A wind speed detection sensor, the wind speed detection sensor being arranged outside the storage bin (1) and being used to detect wind speed; An electromagnetic starting device (7), the electromagnetic starting device (7) comprising a driving rotor (71), the driving rotor (71) being drivingly connected to the axial flow impeller (22), The control unit is connected to the electromagnetic starting device (7) and the wind speed detection sensor for communication with the control unit.

15. A wind power generation device according to claim 14, characterized in that: Also includes: A rolling curtain (11) mounted on a turning frame (31), wherein a pair of guide rails (313) are provided on the turning frame (31), and a slide groove (3130) is provided on the guide rail (313), wherein the rolling curtain (111) comprises a curtain shaft (111) rotatably mounted on the turning frame (31) and a curtain body (112) disposed on the curtain shaft (111), wherein a pair of side edges of the curtain body (112) are slidably disposed in a pair of slide grooves (3130), and the curtain shaft (111) is driven to rotate by a rolling curtain motor (113); An opening is provided on the storage bin (1), and the axial flow impeller (22) extends out of the storage bin (1) from the opening; When in a horizontal working state, the curtain body (112) is unfolded to close the opening on the storage bin (1); In a vertical working state, the rolling curtain (11) is placed on the rear side of the exposed end of the axial flow impeller (22); if the detected wind speed is less than a preset value, the curtain body (112) is rolled up to the outside of the axial projection area of ​​the axial flow impeller (22); if the detected wind speed is greater than the preset value, the curtain body (112) is unfolded to face the axial direction of the axial flow impeller (22), and the rotating seat (6) is started to turn the curtain body (112) to the windward side.

16. A wind power generation device according to claim 1, characterized in that: It also comprises a cooling channel (10), the air inlet end of the cooling channel (10) being in communication with the outside of the storage bin (1) on the side corresponding to the windward direction; and the air outlet end of the cooling channel (10) being arranged in the storage bin (1).

17. A wind power generation device according to claim 1, characterized in that: The vent comprises an air inlet (101) and an air outlet (102) respectively arranged at the front and rear sides of the storage bin (1); an air guide blade (1011) is provided on the air inlet (101); the air guide blade (1011) is rotatably and adjustably mounted on the air inlet (101).

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