Tidal power generation speed-increasing transmission mechanism capable of bearing bidirectional torque and power generation device

Abstract

The tidal power generation speed-increasing transmission mechanism comprises a face gear transmission device, one end of the face gear transmission device is connected with an external blade, and the other end of the face gear transmission device is connected with an overrun clutch transmission device; the planetary gear transmission device is connected with the overrun clutch transmission device; when bearing forward torque transmission, the forward torque is transmitted to the planetary gear transmission device through the face gear transmission device and is output at a high speed by the planetary gear transmission device, and the torque input direction and the torque output direction are opposite. When bearing reverse torque transmission, the reverse torque is transmitted to the face gear transmission device through the planetary gear transmission device, the face gear transmission device idles, the reverse torque is output by the planetary gear transmission device at a high speed, and the torque input direction and the torque output direction are the same.

Description

Technical Field

[0001] The present invention belongs to the technical field of tidal energy utilization, and in particular relates to a tidal power generation speed increasing transmission mechanism and a power generation device capable of bearing bidirectional torque. Background Art

[0002] Tide is a natural phenomenon, mainly caused by the tidal force of the moon and the sun and the rotation effect of the earth. Tide brings huge kinetic energy and potential energy through the sea water, which is collectively called tidal energy. Tidal energy is a renewable energy with huge reserves, inexhaustible, no need for mining and transportation, and clean and pollution-free. Tidal power generation technology is mainly divided into two main aspects based on the form of energy utilization: utilizing potential energy and utilizing kinetic energy.

[0003] The first is to use the potential energy of the tide to generate electricity, that is, to build a dam to form a reservoir, store a large amount of seawater, and build a hydroelectric power plant in or next to the dam, and use the height difference between the rising and falling ocean tides and the reservoir water level to generate electricity; the second is to use the kinetic energy of the tide to generate electricity, that is, to use the kinetic energy contained in the flow of seawater caused by the tide to drive the impeller to rotate, and then drive the generator to rotate through the speed increase system to generate electricity.

[0004] However, the existing power generation devices have the problem of low tidal energy utilization efficiency in the process of utilizing tidal energy. The fundamental reason is that no matter which form of power generation is used, the purpose is to convert the kinetic energy and potential energy of seawater into kinetic energy through the generator. However, due to the regular rise and fall of tides, the energy brought by them has two opposite directions, but the existing speed-increasing transmission generator can only perform high-speed rotation in a single direction to generate electricity, and cannot perform high-speed rotation in both directions, and cannot directly and efficiently utilize the kinetic energy and potential energy brought by the rising and falling tides. Summary of the invention

[0005] The purpose of the present invention is to provide a tidal power generation speed-increasing transmission mechanism and a power generation device that can withstand bidirectional torque, so as to solve the technical defects in the prior art that the existing speed-increasing transmission generator can only perform high-speed rotation in a single direction to generate electricity, and cannot perform high-speed rotation in both directions, and directly and efficiently utilize the kinetic energy and potential energy brought by high tide and low tide.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions: In a first aspect, a tidal power generation speed increasing transmission mechanism capable of withstanding bidirectional torque is provided, comprising: a face gear transmission device, one end of which is connected to the external blade and the other end of which is connected to the overrunning clutch transmission device; A planetary gear transmission device connected to the overrunning clutch transmission device; Wherein, when subjected to positive torque transmission, the positive torque is transmitted to the planetary gear transmission device through the face gear transmission device, and is output at high speed by the planetary gear transmission device, and the torque input direction and the torque output direction are opposite; When subjected to reverse torque transmission, the reverse torque is transmitted to the face gear transmission device through the planetary gear transmission device, the face gear transmission device is idling, and the reverse torque is output by the planetary gear transmission device at high speed, and the torque input direction and the torque output direction are the same.

[0007] Further, the face gear transmission device comprises an input shaft, an end of the input shaft is connected to an input face gear, an idler gear is connected to the input face gear, and idler gear bearings are installed at opposite ends of the idler gear; The top of the idler wheel is connected with an output face gear, and the output face gear is connected with an overrunning clutch transmission device.

[0008] Furthermore, an input shaft bearing is provided on the input shaft, the input shaft bearing is mounted on the housing, and the end of the input shaft bearing is also connected to the overrunning clutch transmission device.

[0009] Furthermore, the input face gear and the output face gear are symmetrically arranged, and the input face gear and the output face gear are connected via an idler gear, and the two idler gear bearings are located outside the input face gear and the output face gear.

[0010] Further, the overrunning clutch transmission device comprises an input one-way overrunning clutch, a transmission shaft and an output one-way overrunning clutch, wherein the transmission shaft is installed in the idler wheel; One end of the transmission shaft extends to the input face gear and is connected to the input one-way overrunning clutch, and is connected to the input shaft through the input one-way overrunning clutch; The other end of the transmission shaft extends to the output face gear and is connected to the output one-way overrunning clutch.

[0011] Furthermore, one end of the transmission shaft connected to the output one-way overrunning clutch is also connected to an output shaft, and a planetary gear transmission device is arranged on the output shaft.

[0012] Furthermore, the planetary gear transmission device comprises a double-arm planet carrier, which is connected to the output shaft and has an interference fit with the transmission shaft; The top of the double-arm planetary carrier is sequentially mounted with a planetary pin, a planetary wheel bearing, a planetary wheel, a sun wheel and a thrust needle roller bearing; The planetary wheel bearings are installed at both ends of the double-arm planetary carrier, and the planetary pins are arranged in the two planetary wheel bearings; The planetary gear is arranged in the middle of the double-arm planetary frame, and its two opposite sides are connected with the planetary gear bearings. The sun gear is arranged below the planetary gear and cooperates with the transmission shaft.

[0013] Furthermore, the thrust needle roller bearing is arranged at two opposite ends of the double-arm planetary carrier and is located outside the planetary wheel bearing.

[0014] Furthermore, the planetary gear is meshed with the sun gear.

[0015] In a second aspect, a power generation device is provided, comprising a power generation device body, on which the transmission mechanism as described above is installed.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. The mechanism can efficiently adapt to the bidirectional torque changes in tidal power generation through the ingenious combination of the face gear transmission device and the planetary gear transmission device, thereby realizing the effective transmission and conversion of the bidirectional torque. In addition, during the forward torque transmission, the torque is efficiently transmitted to the planetary gear transmission device through the face gear transmission device, and the latter is output at high speed, which not only reduces the energy loss in the transmission process, but also improves the efficiency of the overall system. During the reverse torque transmission, although the face gear transmission device is idling, the reverse torque can still be efficiently output by the planetary gear transmission device, ensuring that the system can maintain stable energy output regardless of how the tide changes; at the same time, during the torque reversing transmission process of the face gear transmission device, the automatic cutting in and out of the overrunning clutch transmission device ensures the unidirectional transmission of the torque, and jointly realizes the function of changing the bidirectional rotation to the unidirectional rotation, solving the technical defects that the existing speed-increasing transmission generator can only perform high-speed rotation in one direction to generate electricity, and cannot perform high-speed rotation in both directions, and directly and efficiently utilizes the kinetic energy and potential energy brought by the rising and falling tides.

[0017] 2. The input shaft is directly connected to the input face gear, which reduces the intermediate links in the transmission chain, thereby improving the transmission efficiency. At the same time, the structure of the entire face gear transmission device is relatively compact, which is conducive to reducing the volume and weight of the entire transmission system. The idler bearings are installed at opposite ends, which not only provides stable support, but also enables the idler to play a buffering and guiding role during the transmission process. When the input face gear rotates, the idler can smoothly transmit torque to the output face gear, reducing the impact and vibration during the transmission process.

[0018] 3. The input shaft bearing provides stable support for the input shaft, reduces friction and wear during transmission, thereby improving the stability and reliability of the transmission, ensuring that the input shaft can maintain smooth rotation when subjected to torque, and reducing vibration and noise.

[0019] 4. The symmetrical arrangement of the input face gear and the output face gear makes the entire face gear transmission device more balanced in structure, reduces vibration and noise during the transmission process, and improves the stability and reliability of the transmission. The idler gear, as an intermediate transmission element, can effectively transmit the torque of the input face gear to the output face gear. Since the idler gear is located between the input face gear and the output face gear and maintains proper meshing with both, it can ensure the efficiency and accuracy of torque transmission.

[0020] 5. The coordinated use of the input one-way overrunning clutch and the output one-way overrunning clutch enables the transmission shaft to automatically select the transmission path according to the direction of the torque. In the case of positive torque, the input one-way overrunning clutch is locked, and the torque is transmitted to the output one-way overrunning clutch through the transmission shaft and output; in the case of reverse torque, the output one-way overrunning clutch is locked, while the input one-way overrunning clutch allows the transmission shaft to idle, thus realizing the flexible transmission and adaptation of bidirectional torque.

[0021] 6. By setting the planetary gear transmission device on the output shaft, the torque transmission capacity of the transmission system can be further enhanced, enabling it to cope with larger loads and more complex working conditions.

[0022] 7. The double-arm planetary carrier makes the structure of the planetary gear transmission device more compact, while maintaining efficient torque transmission capability, which helps to reduce the overall size and weight of the transmission system and improve energy transmission efficiency. Secondly, the planetary gear bearings are installed at both ends of the double-arm planetary carrier, providing stable support for the planetary gear, reducing the vibration and wear of the planetary gear during the transmission process, and improving the stability and reliability of the transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 A cross-sectional schematic diagram of a tidal power generation speed-increasing transmission mechanism capable of withstanding bidirectional torque provided by the present invention; Among them: 1. Input shaft; 2. Input shaft bearing; 3. Input one-way overrunning clutch; 4. Input face gear bearing; 5. Input face gear; 6. Idle gear bearing; 7. Idle gear; 8. Transmission shaft; 9. Output face gear; 10. Output one-way overrunning clutch; 11. Output face gear bearing; 12. Output shaft; 13. Double-arm planetary carrier; 14. Planetary pin shaft; 15. Planetary gear bearing; 16. Planetary gear; 17. Sun gear; 18. Thrust needle roller bearing. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0028] In the description of the embodiments of the present invention, it should be noted that if the terms "upper", "lower", "horizontal", "inner", etc. indicate an orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the invention is usually placed when in use, it is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0029] In addition, if the term "horizontal" appears, it does not mean that the component must be absolutely horizontal, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", which does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0030] Tide is a natural phenomenon, mainly caused by the tidal force of the moon and the sun and the rotation effect of the earth. Tide brings huge kinetic energy and potential energy through the sea water, which is collectively called tidal energy. Tidal energy is a renewable energy with huge reserves, inexhaustible, no need for mining and transportation, and clean and pollution-free. Tidal power generation technology is mainly divided into two main aspects based on the form of energy utilization: utilizing potential energy and utilizing kinetic energy.

[0031] The first is to use the potential energy of the tide to generate electricity, that is, to build a dam to form a reservoir, store a large amount of seawater, and build a hydroelectric power plant in or next to the dam, and use the height difference between the rising and falling ocean tides and the reservoir water level to generate electricity; the second is to use the kinetic energy of the tide to generate electricity, that is, to use the kinetic energy contained in the flow of seawater caused by the tide to drive the impeller to rotate, and then drive the generator to rotate through the speed increase system to generate electricity.

[0032] However, the existing power generation devices have the problem of low tidal energy utilization efficiency in the process of utilizing tidal energy. The fundamental reason is that no matter which form of power generation is used, the purpose is to convert the kinetic energy and potential energy of seawater into kinetic energy through the generator. However, due to the regular rise and fall of tides, the energy brought by them has two opposite directions, but the existing speed-increasing transmission generator can only perform high-speed rotation in a single direction to generate electricity, and cannot perform high-speed rotation in both directions, and cannot directly and efficiently utilize the kinetic energy and potential energy brought by the rising and falling tides.

[0033] In order to solve the above technical defects, the inventor provides a tidal power generation speed increasing transmission mechanism and a power generation device that can withstand bidirectional torque.

[0034] The present invention is further described in detail below in conjunction with the accompanying drawings: like Figure 1As shown, in the first aspect of the embodiment of the present invention, a tidal power generation speed-increasing transmission mechanism capable of bearing bidirectional torque is provided, including a face gear transmission device, one end of which is connected to an external blade, and the other end is connected to an overrunning clutch transmission device; a planetary gear transmission device, connected to the overrunning clutch transmission device; wherein, when bearing forward torque transmission, the forward torque is transmitted to the planetary gear transmission device through the face gear transmission device, and is output at high speed by the planetary gear transmission device, and the torque input direction and the torque output direction are opposite; when bearing reverse torque transmission, the reverse torque is transmitted to the face gear transmission device through the planetary gear transmission device, the face gear transmission device is idle, and the reverse torque is output at high speed by the planetary gear transmission device, and the torque input direction and the torque output direction are the same. The mechanism can efficiently adapt to the bidirectional torque changes in tidal power generation through the ingenious combination of the face gear transmission device and the planetary gear transmission device, thereby realizing the effective transmission and conversion of the bidirectional torque. Moreover, when the forward torque is transmitted, the torque is efficiently transmitted to the planetary gear transmission device through the face gear transmission device, and is output at high speed by the latter, which not only reduces the energy loss in the transmission process, but also improves the efficiency of the overall system. During reverse torque transmission, although the face gear transmission device is idling, the reverse torque can still be efficiently output by the planetary gear transmission device, ensuring that the system can maintain stable energy output regardless of the changes in the tides; at the same time, during the torque reversing transmission process of the face gear transmission device, the automatic switching in and out of the overrunning clutch transmission device ensures the unidirectional transmission of torque, and together realizes the function of changing bidirectional rotation to unidirectional rotation, solving the technical defects of the existing speed-increasing transmission generator that can only perform high-speed rotation in one direction to generate electricity and cannot perform high-speed rotation in both directions, and directly and efficiently utilizes the kinetic energy and potential energy brought by the rising and falling tides. Figure 1 As shown, the face gear transmission device includes an input shaft 1, which is connected to an external blade and is used to carry the torque input from the outside; an input face gear 5 is connected to the end of the input shaft 1, and an input face gear bearing 4 is connected to the external housing to support the input face gear 5. The input shaft 1 and the input face gear 5 are fixed by bolts. By directly connecting the input shaft 1 to the input face gear 5, the intermediate links in the transmission chain are reduced, thereby improving the transmission efficiency. At the same time, the structure of the entire face gear transmission device is relatively compact, which is conducive to reducing the volume and weight of the entire transmission system. An idler wheel 7 is connected above the input face gear 5, and an output face gear 9 is connected to the top of the idler wheel 7. The output face gear 9 is connected to the overrunning clutch transmission device. Idle wheel bearings 6 are installed at opposite ends of the idler wheel 7. The idler wheel bearings 6 are installed at opposite ends of the idler wheel 7, which not only provide stable support, but also enable the idler wheel 7 to play a buffering and guiding role in the transmission process. When the input face gear 5 rotates, the idler wheel 7 can smoothly transmit torque to the output face gear 9, reducing the impact and vibration in the transmission process.

[0035] like Figure 1 As shown, the input shaft 1 is also provided with an input shaft bearing 2, which is mounted on the housing, and the end of the input shaft bearing 2 is also connected to the overrunning clutch transmission device. Since the input shaft bearing 2 provides a stable support for the input shaft 1, the friction and wear in the transmission process can be effectively reduced during the movement, thereby improving the stability and reliability of the transmission, ensuring that the input shaft 1 can maintain a stable rotation when subjected to torque, and reducing vibration and noise. The input face gear 5 and the output face gear 9 are symmetrically arranged, and the input face gear 5 and the output face gear 9 are connected by an idler gear 7, and two idler gear bearings 6 are located on the outside of the input face gear 5 and the output face gear 9. The symmetrical arrangement of the input face gear 5 and the output face gear 9 makes the entire face gear transmission device more balanced in structure, reduces vibration and noise in the transmission process, and improves the stability and reliability of the transmission. The idler gear 7, as an intermediate transmission element, can effectively transmit the torque of the input face gear 5 to the output face gear 9. Since the idler gear 7 is located between the input face gear 5 and the output face gear 9 and maintains proper meshing with both, the efficiency and accuracy of torque transmission can be ensured; the output face gear bearing 11 supports the idler gear 7. The overrunning clutch transmission device includes an input one-way overrunning clutch 3, a transmission shaft 8 and an output one-way overrunning clutch 10, as shown in FIG. Figure 1 As shown, the transmission shaft 8 is installed in the idler gear 7; one end of the transmission shaft 8 extends to the input face gear 5 and is connected to the input one-way overrunning clutch 3, and is connected to the input shaft 1 through the input one-way overrunning clutch 3, and the other end of the transmission shaft 8 extends to the output face gear 9 and is connected to the output one-way overrunning clutch 10. The coordinated use of the input one-way overrunning clutch 3 and the output one-way overrunning clutch 10 enables the transmission shaft 8 to automatically select the transmission path according to the direction of the torque. In the case of positive torque, the input one-way overrunning clutch 3 is locked, and the torque is transmitted to the output one-way overrunning clutch 10 through the transmission shaft 8 and output; in the case of reverse torque, the output one-way overrunning clutch 10 is locked, and the input one-way overrunning clutch 3 allows the transmission shaft 8 to idle, thereby realizing flexible transmission and adaptation to bidirectional torque. Figure 1In the embodiment, one end of the transmission shaft 8 connected to the output one-way overrunning clutch 10 is also connected to the output shaft 12, and a planetary gear transmission device is arranged on the output shaft 12, and the planetary gear transmission device includes a double-arm planetary carrier 13, and the double-arm planetary carrier 13 is connected to the output shaft 12 and has an interference fit with the transmission shaft 8. By arranging the planetary gear transmission device on the output shaft 12, the torque transmission capacity of the transmission system can be further enhanced, so that it can cope with larger loads and more complex working conditions. The double-arm planetary carrier 13 makes the structure of the planetary gear transmission device more compact, while maintaining efficient torque transmission capacity, which helps to reduce the overall size and weight of the transmission system and improve energy transmission efficiency. Secondly, the planetary wheel bearings 15 are installed at both ends of the double-arm planetary carrier 13, providing stable support for the planetary wheels 16, reducing the vibration and wear of the planetary wheels 16 during the transmission process, and improving the stability and reliability of the transmission. A planet pin 14, a planet wheel bearing 15, a planet wheel 16, a sun wheel 17 and a thrust needle roller bearing 18 are sequentially installed on the top of the double-arm planetary carrier 13; the planet wheel bearings 15 are installed at both ends of the double-arm planetary carrier 13, and the planet pin 14 is arranged in the two planet wheel bearings 15; the planet wheel 16 is arranged in the middle of the double-arm planetary carrier 13, and its opposite sides are connected to the planet wheel bearings 15, the sun wheel 17 is arranged below the planet wheel 16 and cooperates with the transmission shaft 8, the thrust needle roller bearing 18 is arranged at the opposite ends of the double-arm planetary carrier 13, and is located on the outside of the planet wheel bearings 15, and the planet wheel 16 is meshed with the sun wheel 17. When the speed-increasing transmission mechanism is used to bear torque for transmission, the torque is input from the input shaft 1. Since the rotation direction is inconsistent with the preset transmission direction of the input one-way overrunning clutch 3, the input one-way overrunning clutch 3 does not transmit torque; the torque is transmitted to the input face gear 5 through bolt connection; the input face gear 5 transmits the torque to the output face gear 9 through multiple idler gears 7; the output face gear 9 transmits the torque to the transmission shaft 8 through the output one-way overrunning clutch 10, and the transmission shaft 8 and the double-arm planetary carrier 13 are connected by splines for power transmission. Since the ring gear is fixed, high-speed output can only be performed through the sun gear 17. At this time, the torque input direction and the output direction are opposite; when the speed-increasing transmission mechanism is used to bear reverse torque for transmission, the input one-way overrunning clutch 3 transmits torque, the output one-way overrunning clutch 10 does not transmit torque, and the idler gear 7 and the output face gear 9 only idle; the transmission shaft 8 and the double-arm planetary carrier 13 are connected by splines for power transmission. Since the ring gear is fixed, high-speed output can only be performed through the sun gear 17. At this time, the torque input direction and the torque output direction are the same. Since the torque is input in the reverse direction, the output direction is the same as the output direction under the working condition. In the process of applying the solution, the integrated use of the face gear pair transmission structure of the idler wheel 7 and the multi-stage one-way overrunning clutch mechanism realizes the function of converting the bidirectional rotation of the mechanism into one-way rotation, thereby improving the utilization efficiency of tidal energy.The face gear pair transmission structure of the idler wheel 7 withstands rapid changes through the gear structure of the idler wheel 7, effectively reducing the impact of the rotation direction and improving the stability of the transmission system. The face gear pair transmission structure of the idler wheel utilizes the structural characteristics of the face gear and multiple idlers 7 to reduce the number of support bearings and simplify the support structure.

[0036] In a second aspect, an embodiment of the present invention provides a power generation device, including a power generation device body, on which the transmission mechanism as described above is installed.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit its protection scope. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in the field should understand that after reading the present invention, those skilled in the art can still make various changes, modifications or equivalent substitutions to the specific implementation methods of the invention, but these changes, modifications or equivalent substitutions are all within the protection scope of the pending claims of the invention.

Claims

1. A tidal power generation speed-increasing transmission mechanism capable of withstanding bidirectional torque, characterized in that: include: a face gear transmission device, one end of which is connected to the external blade and the other end of which is connected to the overrunning clutch transmission device; A planetary gear transmission device connected to the overrunning clutch transmission device; Wherein, when subjected to positive torque transmission, the positive torque is transmitted to the planetary gear transmission device through the face gear transmission device, and is output at high speed by the planetary gear transmission device, and the torque input direction and the torque output direction are opposite; When subjected to reverse torque transmission, the reverse torque is transmitted to the face gear transmission device through the planetary gear transmission device, the face gear transmission device is idling, and the reverse torque is output by the planetary gear transmission device at high speed, and the torque input direction and the torque output direction are the same.

2. The transmission mechanism according to claim 1, characterized in that: The face gear transmission device comprises an input shaft (1), an end of the input shaft (1) is connected to an input face gear (5), an idler gear (7) is connected to the input face gear (5), and idler gear bearings (6) are mounted at opposite ends of the idler gear (7); An output face gear (9) is connected to the top of the idler wheel (7), and the output face gear (9) is connected to an overrunning clutch transmission device.

3. The transmission mechanism according to claim 2, characterized in that: An input shaft bearing (2) is also provided on the input shaft (1); the input shaft bearing (2) is mounted on the housing, and an end of the input shaft bearing (2) is also connected to the overrunning clutch transmission device.

4. The transmission mechanism according to claim 2, characterized in that: The input face gear (5) and the output face gear (9) are symmetrically arranged, and the input face gear (5) and the output face gear (9) are connected via an idler gear (7), and the two idler gear bearings (6) are located outside the input face gear (5) and the output face gear (9).

5. The transmission mechanism according to claim 2, characterized in that: The overrunning clutch transmission device comprises an input one-way overrunning clutch (3), a transmission shaft (8) and an output one-way overrunning clutch (10), wherein the transmission shaft (8) is installed in an idler wheel (7); One end of the transmission shaft (8) extends to the input face gear (5) and is connected to the input one-way overrunning clutch (3), and is connected to the input shaft (1) via the input one-way overrunning clutch (3); The other end of the transmission shaft (8) extends to the output face gear (9) and is connected to the output one-way overrunning clutch (10).

6. The transmission mechanism according to claim 5, characterized in that: One end of the transmission shaft (8) connected to the output one-way overrunning clutch (10) is also connected to an output shaft (12), and a planetary gear transmission device is provided on the output shaft (12).

7. The transmission mechanism according to claim 6, characterized in that: The planetary gear transmission device comprises a double-arm planet carrier (13), wherein the double-arm planet carrier (13) is connected to the output shaft (12) and is interference-fitted with the transmission shaft (8); A planet pin (14), a planet wheel bearing (15), a planet wheel (16), a sun wheel (17) and a thrust needle roller bearing (18) are sequentially mounted on the top of the double-arm planet carrier (13); The planetary wheel bearings (15) are mounted on both ends of the double-arm planetary carrier (13), and the planetary pin shafts (14) are arranged in two of the planetary wheel bearings (15); The planetary gear (16) is arranged in the middle of the double-arm planetary carrier (13), and its two opposite sides are connected to the planetary gear bearings (15). The sun gear (17) is arranged below the planetary gear (16) and cooperates with the transmission shaft (8).

8. The transmission mechanism according to claim 7, characterized in that: The thrust needle roller bearing (18) is arranged at two opposite ends of the double-arm planetary carrier (13) and is located outside the planetary wheel bearing (15).

9. The transmission mechanism according to claim 7, characterized in that: The planetary gear (16) meshes with the sun gear (17).

10. A power generation device, characterized in that: It comprises a power generation device body, on which the transmission mechanism according to any one of claims 1 to 9 is installed.

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