A vertical shaft transmission structure

Abstract

The present invention relates to the technical field of power generation devices, and provides a vertical axis transmission structure, wherein the vertical axis transmission structure is arranged in the center of a wind wheel structure, and the vertical axis transmission structure comprises: a support base; a motor, the motor is arranged on the support base and connected to the support base; a transmission mechanism, the transmission mechanism is arranged above the motor and connected to the motor shaft of the motor, and the transmission mechanism is connected to the wind wheel structure; a magnetic suspension bearing, the magnetic suspension bearing is arranged between the support base and the wind wheel structure, and is connected to both the support base and the wind wheel structure. By arranging the magnetic suspension bearing, the wind wheel structure can also rotate to generate electricity under the action of an external micro-thrust (micro-wind force or micro-water force), thereby improving the power generation efficiency, and achieving low energy consumption and low cost. By adopting the magnetic suspension bearing, no wear and no contact are achieved, thereby avoiding the resonance phenomenon of the vertical axis fan, and improving the stability and reliability of the power generation device.

Description

Technical Field

[0001] The present invention relates to the technical field of power generation devices, and more specifically, to a vertical shaft transmission structure. Background Art

[0002] Wind turbines are a renewable, clean energy source that is energy-saving and environmentally friendly. They are used more and more frequently and are also the most important component of future energy.

[0003] The vertical axis wind turbine in the prior art is prone to resonance and mechanical fatigue, including the high friction during the rotation of the vertical axis transmission structure, which results in low rotation efficiency of the vertical axis transmission structure, thereby affecting the power generation efficiency. Summary of the invention

[0004] The object of the present invention is to provide a vertical axis transmission structure to solve the problem in the prior art that the vertical axis transmission structure is prone to cause resonance and fatigue of the wind turbine, thereby solving the technical problem of low transmission efficiency.

[0005] To achieve the above object, the technical solution adopted by the present invention is:

[0006] In one aspect, the present invention provides a vertical axis transmission structure, which is arranged at the center of a wind wheel structure, and the vertical axis transmission structure comprises:

[0007] Support base;

[0008] A motor, the motor is arranged on the support base and connected to the support base;

[0009] A transmission mechanism, the transmission mechanism is arranged above the motor and connected to the motor shaft of the motor, and the transmission mechanism is connected to the wind wheel structure;

[0010] A magnetic bearing is disposed between the support base and the wind wheel structure, and is connected to both the support base and the wind wheel structure.

[0011] According to the vertical shaft transmission structure described above, the magnetic bearing comprises:

[0012] A stator, wherein a permanent magnet is disposed on the stator and the stator is connected to the supporting base;

[0013] A rotor is provided with a permanent magnet, the rotor is arranged above the stator and connected to the wind wheel structure, and the stator and the rotor repel each other and have a first gap, and the rotor can rotate relative to the stator under the action of the wind wheel structure.

[0014] According to the vertical shaft transmission structure described above, the magnetic suspension bearing further comprises an auxiliary load-bearing bearing, and the auxiliary load-bearing bearing is arranged on the inner side wall of the stator;

[0015] The magnetic bearing further comprises a receiving portion, and the receiving portion is arranged on the inner side wall of the rotor;

[0016] A second gap is formed between the auxiliary load-bearing bearing and the receiving portion, and the second gap is smaller than the first gap.

[0017] According to the vertical shaft transmission structure described above, a baffle is provided on the outer periphery of the magnetic bearing.

[0018] According to the vertical axis transmission structure described above, the wind wheel structure includes a wind wheel assembly, and the wind wheel assembly includes a transverse bracket, and a through hole is provided in the middle of the transverse bracket;

[0019] The transmission mechanism comprises a planetary gear set, the planetary gear set is arranged in the through hole and connected to the through hole wall, and the motor shaft is connected to the planetary gear set.

[0020] According to the vertical axis transmission structure described above, the planetary gear set includes a ring gear, a sun gear, and a small planet gear. The sun gear is arranged inside the ring gear, and at least one small planet gear is arranged on the periphery of the sun gear. The small planet gear is respectively meshed with the sun gear and the ring gear, and the end of the motor shaft is connected to the sun gear shaft.

[0021] According to the vertical axis transmission structure described above, the planetary gear is connected to the support base via a planetary shaft.

[0022] According to the vertical axis transmission structure described above, the vertical axis transmission structure further includes a braking mechanism, and the braking mechanism is used to control the motor to stop rotating.

[0023] According to the vertical axis transmission structure described above, the braking mechanism is an electric braking mechanism, and comprises:

[0024] Brake motor;

[0025] A brake belt is disposed around the outside of the motor shaft and is connected to the brake motor.

[0026] According to the vertical axis transmission structure described above, the braking mechanism is a manual braking mechanism and includes at least two braking assemblies, each of which includes:

[0027] Brake caliper, used to hold the motor shaft;

[0028] A V-shaped lever member, one end of which is connected to the brake caliper, and the other end of which is used to connect to a brake handle;

[0029] An elastic component is connected to the V-shaped lever component.

[0030] The beneficial effects of the vertical shaft transmission structure provided by the present invention are at least:

[0031] (1) The vertical axis transmission structure provided by the present invention, through the setting of magnetic levitation bearings, enables the wind wheel structure to effectively rotate under the action of external micro-thrust (micro-wind force or micro-water force), so that the motor can rotate and generate electricity under the external micro-thrust, thereby improving the power generation efficiency and achieving low energy consumption and low cost.

[0032] (2) The vertical axis transmission structure provided by the present invention enhances the connection transmission with the wind wheel structure by setting a cross arm bracket, a magnetic bearing, and a planetary gear, thereby improving the mechanical fatigue problem of the vertical axis wind turbine, and making the wind wheel structure more stable during rotation.

[0033] (3) The vertical axis transmission structure provided by the present invention achieves zero wear and zero contact by adopting magnetic bearings, thereby avoiding the resonance phenomenon generated by the vertical axis wind turbine, thereby improving the stability and reliability of the power generation device. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0035] Figure 1 A schematic diagram of the structure of a vertical shaft transmission structure provided by an embodiment of the present invention;

[0036] Figure 2 A schematic diagram of a power generation device using a vertical axis transmission structure according to an embodiment of the present invention Figure 1 ;

[0037] Figure 3 A schematic structural diagram of a braking mechanism provided in an embodiment of the present invention.

[0038] Among them, the reference numerals in the figure are:

[0039]

[0040] DETAILED DESCRIPTION

[0041] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0042] It should be noted that when a component is referred to as being "fixed on" or "disposed on" another component, it may be directly or indirectly located on the other component. When a component is referred to as being "connected to" another component, it may be directly or indirectly connected to the other component. The directions or positions indicated by the terms "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. are based on the directions or positions shown in the accompanying drawings and are only for the convenience of description and cannot be understood as limitations on the present technical solution. The terms "first" and "second" are only used for the convenience of description and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features. "Multiple" means two or more, unless otherwise clearly and specifically defined.

[0043] See also Figure 1 The present embodiment provides a vertical axis transmission structure 10, which is arranged at the center of the wind wheel structure 20, and the vertical axis transmission structure 10 includes: a support base 110; a motor 120, which is arranged on the support base 110 and connected to the support base 110; a transmission mechanism 130, which is arranged above the motor 120 and connected to the motor shaft 121 of the motor 120, and the transmission mechanism 130 is connected to the wind wheel structure 20; a magnetic bearing 140, which is arranged on the periphery of the motor shaft 121, and the magnetic bearing 140 is arranged between the support base 110 and the wind wheel structure 20, and is connected to both the support base 110 and the wind wheel structure 20.

[0044] The working principle of the vertical axis transmission structure 10 provided in this embodiment is as follows:

[0045] The vertical axis transmission structure 10 provided in this embodiment has a wind rotor structure 20 connected to a transmission mechanism 130, and the transmission mechanism 130 is connected to a motor shaft 121. Under the action of an external thrust (wind force or water force), the wind rotor structure 20 is driven by the external thrust to rotate, and the wind rotor structure 20 is linked to the motor shaft 121 to rotate through the transmission mechanism 130, thereby enabling the motor 120 to generate wind power. At the same time, since a magnetic bearing 140 is also arranged between the support base 110 and the wind rotor structure 20, and since the magnetic bearing 140 has the characteristics of no wear, no lubrication, low heat generation, and no power consumption, the magnetic bearing 140 can effectively rotate the wind rotor structure 20 under the action of an external micro-thrust (micro-wind force or micro-water force), thereby enabling the motor 120 to rotate and generate electricity under the external micro-thrust, thereby achieving low energy consumption and low cost.

[0046] The beneficial effects of the vertical axis transmission structure 10 provided in this embodiment are at least:

[0047] (1) The vertical axis transmission structure 10 provided in this embodiment, through the setting of the magnetic levitation bearing 140, enables the wind wheel structure 20 to effectively rotate under the action of external micro-thrust (micro-wind force or micro-water force), so that the motor 120 can rotate and generate electricity under the external micro-thrust, thereby improving the power generation efficiency and achieving low energy consumption and low cost.

[0048] (2) The vertical axis transmission structure 10 provided in this embodiment increases the connection position with the wind wheel structure 20 by providing the magnetic suspension bearing 140, thereby making the wind wheel structure 20 more stable during rotation.

[0049] (3) The vertical axis transmission structure 10 provided in this embodiment achieves zero wear and zero contact by adopting the magnetic bearing 140, thereby avoiding the resonance phenomenon of the power generation device 100 using the vertical axis transmission structure 10, thereby improving the stability and reliability of the power generation device 100.

[0050] In a preferred embodiment, please continue to refer to Figure 1 The magnetic bearing 140 includes: a stator 141, which is annular and has a permanent magnet, and is connected to the support base 110; a rotor 142, which is annular and has a permanent magnet, is disposed above the stator 141 and is connected to the wind wheel structure 20, and the stator 141 and the rotor 142 repel each other and have a first gap 143, and the rotor 142 can rotate relative to the stator 141 under the action of the wind wheel structure 20.

[0051] Under the action of external micro-thrust (micro-wind force or micro-water force), the wind wheel structure 20 is stressed. Since the rotor 142 and the stator 141 repel each other under the action of the magnetic field and have a first gap 143, the wind wheel structure 20 can easily drive the rotor 142 to rotate relative to the stator 141, and the rotor 142 and the stator 141 always maintain the first gap 143, and the rotor 142 and the stator 141 are contactless and frictionless, thereby realizing more efficient linkage of the motor shaft 121 through the transmission mechanism 130 to achieve power generation. The magnetic suspension bearing 140 provided in this embodiment has a simple structure and stable operation.

[0052] Optionally, the size of the first gap 143 ranges from 8 mm to 12 mm. Optionally, the size of the first gap 143 is 10 mm. It should be understood that the size of the first gap 143 is not limited to the above situation, and can also be other situations, which are not limited here.

[0053] In a preferred embodiment, please continue to refer to Figure 1 The magnetic bearing 140 also includes an auxiliary load-bearing bearing 144, which is arranged on the inner wall of the stator 141; the magnetic bearing 140 also includes a receiving portion 145, which is arranged on the inner wall of the rotor 142; the auxiliary load-bearing bearing 144 and the receiving portion 145 have a second gap 146, and the second gap 146 is smaller than the first gap 143.

[0054] Under normal conditions (when the magnetic bearing 140 is not demagnetized), the rotor 142 rotates relative to the stator 141, and the first gap 143 is always maintained between the rotor 142 and the stator 141. When the rotor 142 and the stator 141 are demagnetized, the rotor 142 moves toward the stator 141 until the receiving portion 145 provided on the inner side of the rotor 142 is connected to the auxiliary bearing 144 provided on the inner wall of the stator 141, and because the second gap 146 between the auxiliary bearing 144 and the receiving portion 145 is smaller than the first gap 143 when the magnetic bearing is not demagnetized, when the receiving portion 145 is connected to the auxiliary bearing 144, there is still a gap between the rotor 142 and the stator 141, which facilitates the matching of the receiving portion 145 and the auxiliary bearing 144, so that the wind wheel structure 20 can also drive the rotor 142 to rotate relative to the stator 141 under the action of wind or water. It can be seen that by providing the receiving portion 145 and the auxiliary load-bearing bearing 144 , the stability of the vertical axis transmission structure 10 is improved as a whole, and the structure is simple. At the same time, the receiving portion 145 is also used to limit the rotation trajectory of the rotor 142 .

[0055] Optionally, the size of the second gap 146 ranges from 4 mm to 6 mm. Optionally, the size of the second gap 146 is 5 mm. It should be understood that the size of the second gap 146 is not limited to the above situation, and can also be other situations, which are not limited here.

[0056] In a preferred embodiment, please continue to refer to Figure 1 The outer sleeve of the magnetic bearing 140 is provided with a baffle 147 for shielding dust and preventing dust from entering the magnetic bearing 140 .

[0057] In a preferred embodiment, please continue to refer to Figure 1 and Figure 2 The vertical axis transmission structure is arranged to connect the wind wheel structure 20 and the tower 30 . The transmission mechanism 130 includes a planetary gear set 131 . The planetary gear set 131 is arranged in the through hole and connected to the through hole wall. The motor shaft 121 is connected to the planetary gear set 131 .

[0058] Since the transmission mechanism 130 includes a planetary gear set 131, the planetary gear set 131 is connected and transmitted by cooperating with the ring gear in the cross bracket 211 of the wind wheel structure 20, and the planetary gear set 131 is also connected to the motor shaft 121, so that when the component 210 is under the action of external thrust (wind force or water force), the cross bracket 211 links the planetary gear set 131 to rotate, and the planetary gear set 131 links the motor shaft 121 to rotate, thereby driving the motor 120 to generate electricity, and the structure is simple, and the use of the planetary gear set 131 can improve the transmission ratio of the motor 120, thereby improving the power generation efficiency of the motor 120.

[0059] In a preferred embodiment, please continue to refer to Figure 1 The planetary gear set 131 includes a ring gear 1311, a sun gear 1312, and a small planetary gear set 1313. The sun gear 1312 is disposed inside the ring gear 1311. At least one small planetary gear set 1313 is disposed on the periphery of the sun gear 1312. The small planetary gear set 1313 is meshed with the sun gear 1312 and the ring gear 1311 respectively. The gear portion at the end of the motor shaft 121 is meshed with the sun gear 1312.

[0060] In a preferred embodiment, please continue to refer to Figure 1 The small planetary gear set 1313 is connected to the support base 110 through the planetary shaft 13131. Thus, the entire planetary gear set 131 is more stably connected in the through hole of the cross bracket 211.

[0061] Optionally, three asteroid gear sets 1313 are disposed on the periphery of the sun gear 1312, and the three asteroid gear sets 1313 are evenly arranged around the periphery of the sun gear 1312. It should be understood that the number of asteroid gear sets 1313 on the periphery of the sun gear 1312 is not limited to the above three, and can also be other values, such as four, etc., which is not limited here.

[0062] In a preferred embodiment, please continue to refer to Figure 1 The vertical axis transmission structure 10 further includes a braking mechanism 150, and the braking mechanism 150 is used to control the motor 120 to stop rotating.

[0063] In a preferred embodiment, please continue to refer to Figure 1 The brake mechanism 150 may be an electric brake mechanism, including a brake motor 151 and a brake belt 152, wherein the brake belt 152 is disposed around the outside of the motor shaft 121 and connected to the brake motor 151. When the motor 120 needs to be controlled to stop rotating, the brake belt 152 is adjusted by controlling the brake motor 151 so that the brake belt 152 hugs the motor shaft 121, thereby preventing the motor 120 from continuing to rotate, and further controlling the motor 120 to stop rotating. The brake mechanism 150 has a simple structure and is easy to use.

[0064] In another preferred embodiment, see Figure 3 The brake mechanism 150 adopts a manual brake mechanism, including at least two brake components, each of which includes: a brake clamp 153, used to hold the motor shaft 121; a V-shaped lever 154, one end of which is connected to the brake clamp 153, and the other end of which is used to connect to the brake handle 31; an elastic component 155, which is connected to the V-shaped lever 154. Optionally, please refer to Figure 2 The brake handle 131 is arranged on the tower 30, and the maintenance window 33 arranged on the tower 30 facilitates the operator to manually operate the brake handle. The brake handle 31 is connected to the V-shaped lever 154 through the steel wire 32. When the motor 120 needs to be controlled to stop rotating, the operator operates the brake handle 131, and one end of the V-shaped lever 154 connected to the brake handle 131 is pulled, and then the end of the V-shaped lever 154 connected to the brake clamp 153 is also pulled, thereby driving the brake clamp 153 to move and hold the motor shaft 121. At this time, the elastic component 155 generates elastic deformation. When the brake handle 31 is operated again, the elastic component 155 restores the elastic deformation and drives the V-shaped lever 154 and the brake clamp 153 to return to their original positions.

[0065] Optionally, the portion of the brake clamp 153 used to hold the motor shaft 121 is in a concave arc shape, and a brake pad 156 is provided at the concave arc shape, which can enable the brake clamp 153 to tightly hold the motor shaft 121 to control the motor shaft 121 to stop rotating.

[0066] Optionally, if Figure 1 As shown, the support base 110 includes: a support base plate 111, the support base plate 111 is connected to the tower 30, the motor 120 is arranged on the support base plate 111 and connected to the support base plate 111; a support portion 112, the support portion 112 is arranged on the support base plate 111 and connected to the support base plate 111, the magnetic bearing 140 is arranged on the support portion 112 and connected to the support portion 112; a support frame 113, the support frame 113 is arranged on the support base plate 111 and connected to the support base plate 111, and the transmission mechanism 130 is connected to the support frame 113 through a planetary shaft 13131. Optionally, the motor 120 is arranged in a cavity formed by the support frame 113 and the support base plate 111, and the motor shaft 121 passes through the support frame 113 and is connected to the transmission mechanism 130.

[0067] In a preferred embodiment, see Figure 2 The power generation device 100 also includes a tower 30 and a base 40, the tower 30 is arranged above the base 40 and connected to the base 40, the vertical axis transmission structure 10 is arranged at the top of the tower 30 and connected to the tower 30, and the wind wheel structure 20 is arranged above the vertical axis transmission structure 10 and connected to the vertical axis transmission structure 10.

[0068] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A vertical axis transmission structure, arranged in the center of a wind wheel structure, characterized in that: The vertical axis transmission structure comprises: Support base; A motor, the motor is arranged on the support base and connected to the support base; A transmission mechanism, the transmission mechanism is arranged above the motor and connected to the motor shaft of the motor, and the transmission mechanism is connected to the wind wheel structure; A magnetic bearing, wherein the magnetic bearing is disposed between the support base and the wind wheel structure, and is connected to both the support base and the wind wheel structure; The magnetic bearing comprises: A stator, wherein a permanent magnet is disposed on the stator and the stator is connected to the supporting base; A rotor, wherein a permanent magnet is disposed on the rotor, the rotor is disposed above the stator and connected to the wind wheel structure, and the stator and the rotor repel each other and have a first gap, and the rotor can rotate relative to the stator under the action of the wind wheel structure; The magnetic suspension bearing further comprises an auxiliary load-bearing bearing, and the auxiliary load-bearing bearing is arranged on the inner side wall of the stator; The magnetic bearing further comprises a receiving portion, and the receiving portion is arranged on the inner side wall of the rotor; A second gap is formed between the auxiliary load-bearing bearing and the receiving portion, and the second gap is smaller than the first gap; The wind wheel structure comprises a wind wheel assembly, and the wind wheel assembly comprises a transverse bracket, and a through hole is provided in the middle of the transverse bracket; The transmission mechanism comprises a planetary gear set, the planetary gear set is arranged in the through hole and connected to the through hole wall, and the motor shaft is connected to the planetary gear; The planetary gear set includes a ring gear, a sun gear, and a small planet gear. The sun gear is arranged inside the ring gear, and at least one small planet gear is arranged outside the sun gear. The small planet gear is meshed with the sun gear and the ring gear respectively, and the end of the motor shaft is connected to the sun gear shaft. The small planetary gear is connected to the support base through a planetary shaft; The vertical axis transmission structure also includes a braking mechanism, and the braking mechanism is used to control the motor to stop rotating.

2. The vertical axis transmission structure according to claim 1, characterized in that: The outer sleeve of the magnetic suspension bearing is provided with a baffle.

3. The vertical axis transmission structure according to claim 1, characterized in that: The brake mechanism is an electric brake mechanism and comprises: Brake motor; A brake belt is disposed around the outside of the motor shaft and is connected to the brake motor.

4. The vertical axis transmission structure according to claim 1, characterized in that: The brake mechanism is a manual brake mechanism and comprises: At least two brake assemblies, each of the brake assemblies comprising: Brake caliper, used to hold the motor shaft; A V-shaped lever member, one end of which is connected to the brake caliper, and the other end of which is used to connect to a brake handle; An elastic component is connected to the V-shaped lever component.

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