Low-speed large-torque transmission system

Abstract

The invention discloses a low-speed large-torque transmission system and a power generation system thereof. The transmission system comprises a driving motor, a magnetic coupling, a speed reducing mechanism, a stable flywheel, a besides-star wheel assembly and a power generator which are sequentially connected in the power transmission direction. The invention provides two core implementation modes: 1, the speed reducing mechanism is composed of a speed reducer and a star wheel transmission module, a planet wheel is driven by a sun gear, and the whole output is realized by a fixed plate, so that power division and convergence are realized, the transmission is stable, and the bearing capacity is high; and secondly, the speed reducing mechanism is composed of two stages of speed reducers, an auxiliary power generation system driven by a stable flywheel is integrated, energy can be recycled, and the comprehensive energy efficiency is improved. By means of different technical paths, efficient and reliable speed reduction and torque increase can be achieved, transmission impact is effectively stabilized, the problems that a traditional transmission scheme is bloated in structure, low in efficiency and poor in impact resistance are solved, and the speed reducer is particularly suitable for wind power generation, heavy machinery and other occasions needing low-speed large-torque output.

Description

Technical Field

[0001] This invention relates to the field of mechanical transmission and new energy power generation technology, specifically to a low-speed, high-torque star wheel transmission device and a power generation system. Background Technology

[0002] In industrial transmission applications such as wind power generation, heavy mining machinery, and port lifting equipment, it is essential to convert the high-speed rotational power of the prime mover into a low-speed, high-torque output. The core component for achieving this goal is the speed reduction transmission device. Traditional solutions mainly rely on bulky and complex multi-stage gear reducers or expensive and difficult-to-maintain hydraulic systems.

[0003] While common gear reduction devices are technologically mature, achieving extremely high speed ratios often requires multiple stages of reduction in series, resulting in excessively long axial dimensions, a less compact structure, and the torque in the transmission chain being entirely borne by a few gear pairs. This leads to limited load-bearing capacity and susceptibility to damage due to stress concentration. Furthermore, during startup, braking, or severe load fluctuations, significant inertial impacts directly affect the transmission chain, impacting equipment lifespan. Simultaneously, current technologies do not adequately address energy waste generated during transmission; for example, system inertial kinetic energy is typically dissipated as heat without effective recovery and utilization, hindering overall energy efficiency improvements.

[0004] Therefore, there is an urgent need in this field for a new type of transmission solution that should have the characteristics of compact structure, smooth transmission, high load capacity, and good reliability, and be able to effectively mitigate impacts and improve the overall energy utilization efficiency, so as to meet the growing demand of modern industry for high-performance transmission systems. Summary of the Invention

[0005] The present invention aims to solve the above-mentioned technical problems by providing a low-speed, high-torque transmission system.

[0006] To solve the above-mentioned technical problems, the technical solution provided by the present invention is: a low-speed, high-torque transmission system, comprising the following components connected sequentially along the power transmission direction: Drive motor; A magnetic coupling, the input end of which is connected to the output end of the drive motor; Speed ​​reduction mechanism; A stabilizing flywheel is disposed in the transmission path; The outer wheel assembly receives power transmitted through the reduction mechanism and the stabilizing flywheel at its input end; A generator, the input shaft of which is connected to the power output end of the outer planetary wheel assembly, wherein the generator is a speed-increasing generator or a conventional generator.

[0007] Furthermore, the deceleration mechanism includes a reducer and a star wheel transmission module; The star wheel transmission module includes a first fixed plate and a second fixed plate arranged side by side, and a star wheel transmission mechanism disposed between the two. The planetary gear transmission mechanism includes a central gear as a power input end, and at least two planetary gears meshing with the central gear; Each of the planetary gears is rotatably supported on a planetary gear shaft, and the two ends of the planetary gear shaft are respectively fixed to the first fixed plate and the second fixed plate; The output end of the reducer is connected to the central gear. After the power is split by the planetary gear, it drives the first fixed plate and the second fixed plate to rotate as a whole and output to the outer planetary gear assembly.

[0008] Furthermore, a first coupling and a second coupling are sequentially arranged between the reducer and the star wheel transmission module, and the stabilizing flywheel is arranged between the first coupling and the second coupling.

[0009] Furthermore, the number of planetary gears is three, and they are evenly distributed along the circumference of the central gear.

[0010] Furthermore, the deceleration mechanism includes a first reducer and a second reducer connected in sequence; The stabilizing flywheel is disposed between the magnetic coupling and the first reducer; The system also includes an auxiliary power generation system, which includes a first gear, a second gear, and an auxiliary motor. The first gear is coaxially arranged with the stabilizing flywheel and meshes with the second gear. The second gear is coaxially connected to the output shaft of the auxiliary motor. A first pulley is sleeved on the input shaft of the first reducer, and a second pulley is coaxially sleeved on the first gear. The first pulley and the second pulley are connected by a first belt. The first reducer and the second reducer are connected by a chain or gear set.

[0011] Furthermore, the output end of the second reducer is driven to be connected to the input end of the outer planet wheel assembly.

[0012] Furthermore, the extraterrestrial wheel assembly includes: A stationary external gear ring; Rotatable planetary carrier; Center gear; And at least two planetary gears, each of which is rotatably mounted on the planet carrier and simultaneously meshes with the external gear ring and the central gear; The planetary carrier serves as the input end of the outer planetary gear assembly, and the central gear serves as the power output end, connected to the input shaft of the generator.

[0013] Furthermore, the first fixed plate and / or the second fixed plate of the star gear transmission module are drivenly connected to the planetary carrier.

[0014] Furthermore, the output end of the second reducer is connected to the planetary carrier drive.

[0015] Furthermore, it also includes an electrical cabinet and grid connection facilities, with the output terminal of the generator electrically connected to the electrical cabinet.

[0016] The advantages of this invention compared to the prior art are: The two low-speed, high-torque transmission solutions provided by this invention complement each other, jointly constructing a highly efficient and reliable transmission technology system. Their core advantages lie in achieving extremely high transmission efficiency, excellent stability, and wide applicability through different innovative approaches. The first solution employs a unique planetary gear transmission module. Utilizing its "splitting-converging" principle, it evenly distributes the load across multiple planetary gears, significantly improving the system's load-bearing capacity and service life. Furthermore, it achieves extremely smooth transmission and low noise, demonstrating outstanding advantages in its compact structure and high reliability, making it particularly suitable for applications with stringent requirements for compactness and stability.

[0017] The second solution cleverly integrates an auxiliary power generation system with a multi-stage reduction gear mechanism. By synchronously driving the auxiliary generator through a stable flywheel, it effectively recovers system energy and significantly improves overall energy efficiency. Its combination of belt drive and multi-stage reducer provides excellent configuration flexibility and damping performance. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of an embodiment of a low-speed, high-torque transmission system of the present invention.

[0019] Figure 2 This is a schematic diagram of a planar structure of an embodiment of a low-speed, high-torque transmission system of the present invention.

[0020] Figure 3 This is a schematic diagram of the star wheel transmission module structure of a low-speed, high-torque transmission system according to the present invention.

[0021] Figure 4 This is a schematic diagram of the extraterrestrial wheel assembly structure of a low-speed, high-torque transmission system according to the present invention.

[0022] Figure 5 This is a schematic diagram of a second embodiment of the low-speed, high-torque transmission system of the present invention.

[0023] Figure 6This is a schematic diagram of the planar structure of a second embodiment of the low-speed, high-torque transmission system of the present invention.

[0024] Figure 7 This is a schematic diagram of a third embodiment of the low-speed, high-torque transmission system of the present invention. Detailed Implementation

[0025] To make the technical problems, solutions, and beneficial effects of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0026] Example 1: Transmission System Based on Star Gear Drive Module This embodiment provides a low-speed, high-torque transmission system that implements the first solution. Figures 1-4 This is a schematic diagram of the transmission system in this embodiment.

[0027] like Figure 1 As shown, the transmission system includes, in sequence along the power transmission direction, a drive motor 1, a magnetic coupling 2, a first coupling 4, a stabilizing flywheel 5, a second coupling 6, a reducer 3, a star wheel transmission module 7, an outer star wheel assembly 8, and a generator 9, wherein the generator 9 is a conventional generator.

[0028] The output shaft of the drive motor 1 is connected to the input end of the magnetic coupling 2 to provide initial power. The output end of the magnetic coupling 2 is connected to the input end of the stabilizing flywheel 5 via a first coupling 4. The output end of the stabilizing flywheel 5 is connected to the input shaft of the reducer 3 via a second coupling 6. The stabilizing flywheel 5 stores kinetic energy and smooths out system speed fluctuations. The output shaft of the reducer 3 is connected to the power input end of the star wheel transmission module 7.

[0029] The star gear transmission module 7 includes a first fixed plate 71 and a second fixed plate 72 arranged side by side, and a star gear transmission mechanism 73 disposed between the two. The star gear transmission mechanism 73 includes a central gear 731 serving as the power input end, and three planetary gears 732 evenly distributed circumferentially along the central gear 731. Each planetary gear 732 is rotatably supported on a planetary gear shaft 733 by bearings, and both ends of the planetary gear shaft 733 are respectively fixed to the first fixed plate 71 and the second fixed plate 72. Preferably, a positioning sleeve (not shown in the figure) is installed in the inner hole of the planetary gear 732, and the planetary gear 732 is rotatably fitted onto the planetary gear shaft 733 through the positioning sleeve.

[0030] Power is output from reducer 3 to central gear 731, driving it to rotate. Central gear 731 drives the three planetary gears 732 meshing with it to rotate synchronously. Since the two ends of planetary gear shaft 733 are fixed, the rotation of planetary gears 732 will generate a reaction force, driving the first fixed plate 71 and the second fixed plate 72 to rotate as a whole around the central axis, thereby splitting the power and then converging it again to form a low-speed, high-torque output.

[0031] The output end of the star gear transmission module 7, namely the first fixed plate 71 and the second fixed plate 72, is drivenly connected to the input end of the outer star gear assembly 8. The outer star gear assembly 8 includes a fixed outer gear ring 801, a rotatable planetary carrier 802, a central gear 803, and three evenly distributed planetary gears 804. The planetary gears 804 are rotatably mounted on the planetary carrier 802 and mesh with both the outer gear ring 801 and the central gear 803. In this embodiment, the first fixed plate 71 and / or the second fixed plate 72 of the star gear transmission module 7 are fixedly connected to the planetary carrier 802, thereby driving the planetary carrier 802 to rotate. The fixed outer gear ring 801 forces the planetary gears 804 to rotate around their own axis while revolving around the central gear 803, thereby driving the central gear 803 to output at a higher speed and torque. The output shaft of the central gear 803 is connected to the input shaft of the generator 9, ultimately converting mechanical energy into electrical energy. The power output end of the generator 9 is connected to the electrical cabinet and grid connection facilities (not shown in the figure) to realize the management and utilization of electrical energy.

[0032] The working process of this embodiment is as follows: Drive motor 1 starts, and power is initially adjusted and stabilized through magnetic coupling 2, stabilizing flywheel 5, and reducer 3. Subsequently, power is transmitted to star wheel transmission module 7, which, through its unique "splitting-combining" principle, achieves a significant initial reduction in speed and torque. Then, power undergoes a second reduction in speed and torque through outer star wheel assembly 8, ultimately driving generator 9 to generate electricity efficiently. This system has a compact structure, smooth transmission, and can output extremely low speeds and enormous torque.

[0033] Example 2: Transmission system based on auxiliary power generation and multi-stage deceleration This embodiment provides another low-speed, high-torque transmission system, which implements the second solution. Figure 4-6 This is a schematic diagram of the transmission system in this embodiment.

[0034] like Figure 5 , Figure 6 As shown, the transmission system includes, in sequence along the power transmission direction, a drive motor 1, a magnetic coupling 2, a stabilizing flywheel 5, a first reducer 13, a second reducer 14, an outer star wheel assembly 8, and a generator 9, wherein the generator 9 is a speed-increasing generator.

[0035] Unlike Embodiment 1, this embodiment connects the stabilizing flywheel 5 directly after the magnetic coupling 2. A first gear 10 is coaxially fixedly mounted on the shaft extension of the stabilizing flywheel 5. An auxiliary power generation system includes the first gear 10, a second gear 11 meshing with the first gear 10, and an auxiliary motor 12. The second gear 11 is fixed to the output shaft of the auxiliary motor 12. When the stabilizing flywheel 5 rotates, it drives the first gear 10 to rotate, which in turn drives the shafts of the second gear 11 and the auxiliary motor 12 to rotate, causing the auxiliary motor 12 to operate as a generator, recovering a portion of the system energy and achieving the function of auxiliary power generation.

[0036] The output shaft of the stabilizing flywheel 5 is also connected to the input end of the first reducer 13. Specifically, a first pulley 15 is sleeved on the input shaft of the first reducer 13, and a second pulley 16 is sleeved on the shaft extension of the stabilizing flywheel 5 (coaxial with the first gear 10). The first pulley 15 and the second pulley 16 are connected by a first belt 17. Therefore, the power of the stabilizing flywheel 5 drives the auxiliary power generation system on the one hand, and drives the first reducer 13 through the belt drive mechanism on the other hand.

[0037] The output end of the first reducer 13 is connected to the input end of the second reducer 14. Specifically, chains 18 are respectively installed on the output shaft of the first reducer 13 and the input shaft of the second reducer 14 to connect them and realize power transmission. After two stages of reduction, the output shaft of the second reducer 14 is driven to connect to the planet carrier 802 of the outer planetary gear assembly 8.

[0038] The structure of the outer planetary gear assembly 8 is the same as in Embodiment 1, including an outer gear ring 801, a planetary carrier 802, a central gear 803, and planetary gears 804. In this embodiment, the output shaft of the second reducer 14 directly drives the planetary carrier 802 to rotate. The planetary carrier 802 drives the planetary gears 804, which mesh with the fixed outer gear ring 801, thereby driving the central gear 803 to rotate and output power. The output shaft of the central gear 803 is finally connected to the input shaft of the generator 9. The generator 9 is also connected to the electrical cabinet and grid connection facilities.

[0039] The working process of this embodiment is as follows: The power of the drive motor 1 is transmitted to the stabilizing flywheel 5 via the magnetic coupling 2. The stabilizing flywheel 5 simultaneously drives the auxiliary power generation system (energy recovery) and the first reducer 13. After passing through two stages of reduction and torque amplification via the first reducer 13 and the second reducer 14, the power drives the outer planetary wheel assembly 8 for a third stage of reduction and torque amplification, ultimately driving the main generator 9 to generate electricity. This scheme improves energy utilization through the auxiliary power generation system and achieves a larger speed ratio through multi-stage reduction.

[0040] In Example 3, a gear set 19 is used to connect the first reducer and the second reducer for transmission, and the rest of the structural principle is the same as in Example 2.

[0041] Example 4 A system for photovoltaic tracking and energy storage secondary power generation This embodiment describes a specific solution for applying the aforementioned low-speed, high-torque transmission system to the photovoltaic and energy storage fields.

[0042] The system includes a photovoltaic panel array, a transmission actuator (such as a hydraulic push rod), a low-speed, high-torque transmission system as described in Embodiment 1 or 2, a battery pack, and a grid-connected inverter. The transmission actuator connects the output end of the transmission system to the photovoltaic panel shaft. The drive motor 1 is powered by the battery, and the output of the generator 9 is connected to the battery and the power grid via a charging controller.

[0043] The system has two operating modes: Photovoltaic tracking mode: During the day, the battery powers the drive system, which in turn drives the actuator to adjust the angle of the photovoltaic panels, achieving precise tracking of the sun and improving power generation efficiency.

[0044] Energy storage power generation mode: At night or during peak electricity consumption, the battery discharges to drive the transmission system, which in turn drives the generator 9 to generate electricity. The electricity is then used to recharge the battery or fed back into the grid, thus realizing the secondary utilization of energy storage.

[0045] The advantage of this embodiment is that it realizes the dual functions of photovoltaic tracking and energy storage power generation through a single transmission system, which significantly improves the overall efficiency and economic benefits of the new energy system.

[0046] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A low-speed, high-torque transmission system, characterized in that, Including those connected sequentially along the power transmission direction: Drive motor (1); A magnetic coupling (2) has its input end connected to the output end of the drive motor (1); Speed ​​reduction mechanism; A stabilizing flywheel (5) is disposed in the transmission path; The outer wheel assembly (8) receives power transmitted through the reduction mechanism and the stabilizing flywheel (5) at its input end; The generator (9) has its input shaft connected to the power output end of the outer planet wheel assembly (8). The generator (9) is a speed-up generator or a regular generator.

2. The low-speed, high-torque transmission system according to claim 1, characterized in that, The deceleration mechanism includes a reducer (3) and a star wheel transmission module (7); The star wheel transmission module (7) includes a first fixed plate (71) and a second fixed plate (72) arranged side by side, and a star wheel transmission mechanism (73) disposed between the two. The star gear transmission mechanism (73) includes a central gear (731) as a power input end, and at least two planetary gears (732) meshing with the central gear (731). Each of the planetary gears (732) is rotatably supported on a planetary gear shaft (733), and the two ends of the planetary gear shaft (733) are respectively fixed on the first fixed plate (71) and the second fixed plate (72); The output end of the reducer (3) is connected to the central gear (731). After the power is split by the planetary gear (732), it drives the first fixed plate (71) and the second fixed plate (72) to rotate as a whole and output to the outer planetary gear assembly (8).

3. The low-speed, high-torque transmission system according to claim 2, characterized in that, A first coupling (4) and a second coupling (6) are sequentially arranged between the reducer (3) and the star wheel transmission module (7), and the stabilizing flywheel (5) is arranged between the first coupling (4) and the second coupling (6).

4. The low-speed, high-torque transmission system according to claim 2 or 3, characterized in that, The number of planetary gears (732) is three, and they are evenly distributed around the circumference of the central gear (731).

5. The low-speed, high-torque transmission system according to claim 1, characterized in that, The deceleration mechanism includes a first reducer (13) and a second reducer (14) connected in sequence. The stabilizing flywheel (5) is disposed between the magnetic coupling (2) and the first reducer (13); The system also includes an auxiliary power generation system, which includes a first gear (10), a second gear (11) and an auxiliary motor (12). The first gear (10) is coaxially arranged with the stabilizing flywheel (5) and meshes with the second gear (11). The second gear (11) is coaxially connected with the output shaft of the auxiliary motor (12). A first pulley (15) is sleeved on the input shaft of the first reducer (13), and a second pulley (16) is coaxially sleeved on the first gear (10). The first pulley (15) and the second pulley (16) are connected by a first belt (17). The first reducer (13) and the second reducer (14) are connected by a chain (18) or a gear set (19).

6. The low-speed, high-torque transmission system according to claim 5, characterized in that, The output end of the second reducer (14) is driven to the input end of the outer planetary wheel assembly (8).

7. The low-speed, high-torque transmission system according to claim 1, characterized in that, The extraterrestrial wheel assembly (8) includes: Fixed external gear ring (801); Rotatable planetary carrier (802); Center gear (803); And at least two planetary gears (804), each of which is rotatably mounted on the planet carrier (802) and simultaneously meshes with the external gear ring (801) and the central gear (803); The planetary carrier (802) serves as the input end of the outer planetary gear assembly (8), and the central gear (803) serves as the power output end connected to the input shaft of the generator (9).

8. The low-speed, high-torque transmission system according to claim 2, characterized in that, The first fixed plate (71) and / or the second fixed plate (72) of the star gear transmission module (7) are driven to be connected to the planetary carrier (802).

9. The low-speed, high-torque transmission system according to any one of claims 5 or 6, characterized in that, The output end of the second reducer (14) is driven to be connected to the planetary carrier (802).

10. The low-speed, high-torque transmission system according to claim 1, characterized in that, It also includes an electrical cabinet and grid connection facilities, with the output end of the generator (9) electrically connected to the electrical cabinet.

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