Power transmission device

Abstract

The invention discloses a power transmission device, and belongs to the technical field of transmission. The device comprises an input part, a conversion part and a speed change part, the input part drives a gear to drive a rotating wheel to rotate through a rotating motor, and an inclined sleeve at the edge of the rotating wheel enables a transmission rod to synchronously stretch out and draw back along with rotation of the inclined sleeve; the conversion part converts the swing of the transmission rod into self-swing through a transmission shaft, and then drives a transmission disc to rotate through the synergistic effect of a U-shaped frame, a swing rod and an eccentric U-shaped seat; and the speed change part realizes speed regulation through an initial shaft, a middle shaft and an output shaft (engaged transmission through gears C, D and E) which are parallel to one another in a gearbox, and finally drives terminal equipment such as a rotor generator and the like. Through the integrated design of a mechanical structure, the transmission efficiency and the adjustment flexibility are improved, and the device is suitable for various power transmission scenes.

Description

Technical Field

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

[0002] In industrial production, mechanical equipment, and energy conversion, power transmission systems are core components for energy transfer and motion conversion. Their performance directly impacts the equipment's operating efficiency, adjustment accuracy, and applicable range. With the increasing demand for efficient, flexible, and compact transmission systems in modern industry, traditional transmission systems are gradually exposing numerous shortcomings, including the following: First, low transmission efficiency and high energy loss: Hydraulic and pneumatic transmissions utilize fluid pressure to transmit power, offering high output power and a wide speed range. However, hydraulic transmissions are subject to a high risk of fluid leakage and viscous drag of hydraulic oil, which leads to energy loss, particularly at low speeds. Pneumatic transmissions, due to the compressibility of gas, are susceptible to flow loss during pressure fluctuations, resulting in lower overall efficiency than hydraulic transmissions. Energy waste is particularly prominent in continuous high-load operation. Second, poor transmission flexibility: Traditional rigid transmission systems, such as gears and chain drives, achieve motion transmission through spatial arrangement, with a single transmission direction and limited application. Third, non-adjustable power transmission: Most transmission systems have a single, non-adjustable transmission ratio, making them suitable only for fixed operating conditions. For example, in scenarios where the output speed or direction needs to be adjusted (such as speed regulation of production line conveyor belts and direction change of construction machinery), multiple sets of gearboxes or clutches need to be additionally configured, resulting in a bulky and complex equipment structure.

[0003] Therefore, there is an urgent need to develop a new power transmission device. Summary of the Invention

[0004] The purpose of the present invention is to provide a power transmission device to solve the problems of low transmission efficiency, poor transmission flexibility and unadjustable power transmission in the prior art.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a power transmission device, comprising an input part at the front end, a conversion part in the middle, a speed changing part at the rear end and a terminal device; characterized in that the input part is provided with a flywheel A and a rotating wheel; a sleeve is fixed to the outer edge of the circumference of the rotating wheel, and a transmission rod is slidably connected inside the sleeve; the conversion part is provided with a transmission shaft and a transmission plate, and the transmission shaft is connected to the transmission rod and the transmission plate at the same time; the speed changing part is provided with a gearbox and a flywheel B, and the gearbox is provided with an initial shaft, an intermediate shaft and an output shaft in sequence and parallel to each other, and the three shafts are connected by gears inside the gearbox.

[0006] Preferably, the input part is further provided with a rotating motor, a gear A is fixed on the output shaft of the rotating motor, and the gear A meshes with a gear B. The gear B is coaxially fixed on a rotating shaft, and the rotating wheel is coaxially fixed to one end of the rotating shaft.

[0007] Preferably, the flywheel A is coaxially fixed to the other end of the rotating shaft.

[0008] Preferably, the sleeve is fixed obliquely on the outer edge of the circumference of the rotating wheel.

[0009] Preferably, a swing groove is radially provided at one end of the transmission shaft, a pin is vertically provided in the swing groove, and the transmission rod is rotatably connected to the pin in the swing groove.

[0010] Preferably, a U-shaped frame is vertically fixed to the outer surface of the other end of the transmission shaft, and a swing rod is rotatably connected inside the U-shaped frame; a U-shaped seat is eccentrically provided on one surface of the transmission disk, and the inside of the U-shaped seat is rotatably connected to the swing rod; the end of the transmission rod connected to the transmission shaft is a quadrangular prism structure, and the end cooperating with the sleeve is a cylindrical structure.

[0011] Preferably, the initial shaft is fixed vertically and coaxially to the other surface of the transmission disc, and the output shaft is connected to the terminal device.

[0012] Preferably, the flywheel B is coaxially fixed on one end of the intermediate shaft.

[0013] Preferably, gear C is fixed coaxially in the middle of the initial shaft, gear D is fixed coaxially in the middle of the intermediate shaft, gear E is fixed coaxially in the middle of the output shaft, gear C meshes with gear D, and gear D meshes with gear E.

[0014] Preferably, the terminal device is a rotor generator, and one end of the output shaft is fixed coaxially with the rotating shaft of the rotor generator.

[0015] Compared with the prior art, the present invention has the following technical effects.

[0016] 1. This device utilizes a fully mechanical transmission structure (gear meshing and rod connection), eliminating the fluid resistance losses associated with hydraulic transmission and the energy loss caused by pressure fluctuations in pneumatic transmission. The input portion utilizes the rigid meshing of gears A and B, combined with the sliding fit of the transmission rod and sleeve, to reduce energy losses during transmission.

[0017] 2. The sleeve of the input part is fixed at an angle to the edge of the rotating wheel, allowing the transmission rod to synchronously achieve axial extension and radial swing as the rotating wheel rotates. In conjunction with the swinging motion of the drive shaft, it can adapt to angle changes within a certain range. The conversion part is connected to the swinging rod through the eccentric U-shaped seat of the transmission disc, stably converting the swinging motion into rotational motion. This flexibility makes it adaptable to power transmission scenarios with different spatial layouts.

[0018] 3. The initial shaft, intermediate shaft, and output shaft of the speed-changing section are meshed and driven by gears C, D, and E. By replacing gears with different numbers of teeth (under the same module), a variety of transmission ratios can be achieved to meet the speed requirements of different terminal devices. In addition, by changing the type of gear (such as replacing spur gears with bevel gears), the transmission direction can be changed (such as a 90° turn) to adapt to vertical power transmission. The adjustment process does not require overall equipment modification, only the gear assembly needs to be replaced, which improves the adjustment efficiency compared to traditional transmission devices.

[0019] 4. The output shaft can be connected to different terminal equipment such as rotor generators, conveyor belts, stirring devices, etc., solving the problem of "strong specificity and poor adaptability" of traditional transmission devices.

[0020] 5. The dual speed stabilization function of flywheel A and flywheel B makes the system's speed stability better than traditional transmission devices when the load fluctuates, reducing the vibration and noise of the terminal equipment. The fully mechanical structure has no risk of hydraulic oil leakage.

[0021] Other advantages, objects and features of the present invention will be described in part in the following description; and in part will be apparent to those skilled in the art based on an examination of the following; or may be taught from the practice of the invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is one of the three-dimensional structural diagrams of the present invention.

[0023] Figure 2 This is the second schematic diagram of the three-dimensional structure of the present invention.

[0024] Figure 3 It is the front view of the present invention.

[0025] Figure 4 for Figure 2 rear view.

[0026] Figure 5 for Figure 2 Left view of .

[0027] Figure 6 for Figure 2 Right view of .

[0028] Figure 7 for Figure 2 Top view of .

[0029] Figure 8 for Figure 7 Middle AA section view.

[0030] Figure 9 for Figure 8 Enlarged view of point B in the middle.

[0031] Figure 10 for Figure 8 Enlarged view of point C in the middle.

[0032] In the figure: 1. rotating motor; 2. Gear A; 3. Gear B; 4. rotating shaft; 5. rotating wheel; 501. sleeve; 6. transmission rod; 7. transmission shaft; 8. swing groove; 9. pin shaft; 10. U-shaped frame; 11. swing rod; 12. transmission plate; 13. U-shaped seat; 14. gearbox; 15. initial shaft; 16. intermediate shaft; 17. output shaft; 18. gear C; 19. gear D; 20. gear E; 21. rotor generator; 22. bracket; 23. bearing support; 24. flywheel A; 25. flywheel B. DETAILED DESCRIPTION

[0033] 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 only part of the embodiments of the present invention, rather than all the embodiments.

[0034] Reference Figure 1-10 A power transmission device includes an input part at the front end, a conversion part in the middle, a speed change part at the rear end and a terminal device. The original power is input and transmitted through the input part, and then after corresponding transmission in the conversion part, it is output to the speed change part for speed or transmission conversion; the input part is provided with a flywheel A 24 and a rotating wheel 5, and the rotating motor 1 is fixed on the bracket 22; a sleeve 501 is fixed on the outer edge of the circumference of the rotating wheel 5, and a transmission rod 6 is slidably connected inside the sleeve 501; the conversion part is provided with a transmission shaft 7 and a transmission plate 12, and the two ends of the transmission shaft 7 are fixed to the bracket 22 through bearing supports 23, and the transmission shaft 7 is connected to the transmission rod 6 and the transmission plate 12 at the same time; the speed change part is provided with a gearbox 14 and a flywheel B 25, and the gearbox 14 is fixed to the bracket 22. The gearbox 14 is provided with an initial shaft 15, an intermediate shaft 16 and an output shaft 17 in sequence and parallel to each other. The two ends of the three shafts are fixed to the bracket 22 through bearing supports 23 and the three shafts are connected by gears inside the gearbox 14, and the gearbox 14 is connected to the terminal device.

[0035] The input section also includes a rotating motor 1. A gear A 2 is fixed to the output shaft of the rotating motor 1, meshing with a gear B 3. Gear B 3 is coaxially fixed to a rotating shaft 4. A rotating wheel 5 is coaxially fixed to one end of the rotating shaft 4. A flywheel A 24 is coaxially fixed to the other end of the rotating shaft 4. The sleeve 501 is fixed obliquely to the outer edge of the rotating wheel 5. A radial swing groove 8 is provided at one end of the transmission shaft 7. A pin 9 is perpendicularly positioned in the swing groove 8. The transmission rod 6 is rotatably connected to the pin 9 within the swing groove 8. A U-shaped bracket 10 is perpendicularly fixed to the outer surface of the other end of the transmission shaft 7. A swing rod 11 is rotatably connected to the interior of the U-shaped bracket 10. A U-shaped seat 13 is eccentrically positioned on one surface of the transmission disc 12. The U-shaped bracket 13 is rotatably connected to the interior of the swing rod 11. The end of the transmission rod 6 that connects to the transmission shaft 7 is a quadrangular prism structure, while the end that mates with the sleeve 501 is a cylindrical structure, creating a more stable fit.

[0036] When the rotating motor 1 is started, Gear A 2 drives Gear B 3 to rotate. The rotation of Gear B 3 synchronously drives the rotating shaft 4, which in turn rotates the rotating wheel 5, which in turn drives the transmission rod 6 to rotate. In addition to the scheme in which the primary power is transmitted from the rotating motor 1, Gear A 2, and Gear B 3 to the rotating shaft 4 in this embodiment, a hub motor can also be coaxially connected to the center of the end of the rotating wheel 5 that is not connected to the rotating shaft 4. The hub motor directly transmits power to the rotating wheel 5, causing it to rotate, and then transmits power to the rotating shaft 4, replacing the original primary power scheme. This scheme is not demonstrated in this embodiment, and the primary power structure is not limited to these two types. Users can configure it according to their needs.

[0037] Because one end of the transmission rod 6 is mounted within the sleeve 501, which is tilted, the rotating wheel 5 drives one end of the transmission rod 6 in circular motion. Simultaneously, due to the tilt of the sleeve 501, the transmission rod 6 undergoes telescopic motion along the axial direction of the sleeve 501, ensuring that the transmission rod completes its reciprocating "extend-retract" motion within one rotation. The transmission rod 6 is rotatably connected to the pin 9 within the swinging groove 8. This multi-faceted arrangement allows the transmission rod 6 to simultaneously extend and retract within the sleeve 501 while being driven by the rotating wheel 5, causing the transmission rod 6 and the transmission shaft 7 to swing about its own central axis. The quadrangular prism end of the transmission rod 6 is connected within the swinging groove 8 via the pin 9, limiting its circumferential rotation and allowing it to swing only along the pin, with an angle consistent with the swing angle of the transmission shaft. During the combined telescopic and oscillatory motion of the transmission rod 6, the pin 9 pushes the transmission shaft 7 to swing back and forth about its own axis. This swinging motion of the transmission shaft 7, coupled through the connection to the U-shaped frame 10, causes the swinging rod 11 to swing, which, coupled through the connection to the U-shaped seat 13, causes the transmission disc 12 to rotate. When the rotating motor 1 is started, the flywheel A 24 rotates synchronously with the rotating wheel 5 because, firstly, it can stabilize the rotation speed of the rotating wheel 5 and absorb speed fluctuations through its rotational inertia. When the load suddenly increases and the rotation speed of the rotating shaft 4 decreases, the flywheel A 24 releases kinetic energy to maintain a stable speed; when the load suddenly decreases, the flywheel A 24 absorbs excess kinetic energy to prevent the speed from rising suddenly; secondly, the flywheel A 24 has a large rotational inertia to prevent the rotating wheel 5 from getting stuck and unable to rotate during power transmission; thirdly, when the rotating motor 1 stops, the flywheel A 24 relies on its rotational inertia to quickly stop the operation of the rotating shaft 4 and the rotating wheel 5, avoiding the impact of an emergency stop and having a braking effect.

[0038] The initial shaft 15 is fixed vertically and coaxially to the other surface of the transmission plate 12, and the output shaft 17 is connected to the terminal device, which is fixed to the bracket 22. The flywheel B 25 is coaxially fixed to one end of the intermediate shaft 16.

[0039] Gear C 18 is coaxially fixed to the center of the initial shaft 15, gear D 19 is coaxially fixed to the center of the intermediate shaft 16, and gear E 20 is coaxially fixed to the center of the output shaft 17. Gear C 18 meshes with gear D 19, and gear D 19 meshes with gear E 20. The transmission plate 12 converts the swinging motion of the transmission shaft 7 into rotational motion: when the transmission shaft 7 swings to the left, the U-shaped frame 10 drives the swing rod 11 to swing left, pushing the transmission plate 12 clockwise via the eccentric U-shaped seat 13; when the transmission shaft 7 swings to the right, the swing rod 11 swings to the right, pulling the transmission plate 12 to continue rotating clockwise via the U-shaped seat 13. The mold base 13 is eccentrically arranged, and the lever principle is used to convert reciprocating swing into continuous rotation. The speed of the transmission plate 12 depends on the swing frequency and the eccentricity power. The power is transmitted to the initial shaft 15 through the rotating plate 12 and enters the interior of the gearbox 14 and continues to be transmitted inside the gearbox 14. In the gearbox 14, the power passes through the initial shaft 15-gear C 18-gear D 19-gear E 20-output shaft 17-terminal device in sequence. By changing the number and module of teeth of gear C 18, gear D 19 and gear E 20, the meshing transmission ratio between the three is changed, so that the transmission speed output by the output shaft 17 is changed. The type and meshing relationship between the three gears can also be changed to change the direction of conversion. For example, changing to a bevel gear to achieve a 90° turn, the corresponding initial shaft 15, intermediate shaft 16 and output shaft 17 are no longer arranged in parallel. In this embodiment, gear C 18, gear D 19 and gear E 20 are three cylindrical spur gears of the same size, but this does not represent the only one. You can choose according to your needs.

[0040] Flywheel B 25 rotates synchronously with the intermediate shaft 16. Its functions are, first, to stabilize the overall speed of the gearbox. Its rotational inertia is used to stabilize the internal speed of the transmission 14. When the gear meshing generates an impact that causes the speed of the intermediate shaft 16 to fluctuate, flywheel B 25 absorbs the impact energy, thereby reducing the speed fluctuation of the intermediate shaft 16. Alternatively, markings (e.g., markings per revolution) may be provided on the exterior of flywheel B 25 to observe and display the real-time speed of the intermediate shaft 16, which will not be shown in this embodiment. Second, the large rotational inertia of flywheel A 24 prevents the intermediate shaft 16 from becoming stuck and unable to operate during power transmission. Third, when power transmission stops, flywheel A 24 uses its rotational inertia to quickly stop the operation of the intermediate shaft 16, thus acting as a brake.

[0041] The dual speed stabilizing effect of flywheel A 24 and flywheel B 25 makes the system's speed stability better than that of traditional transmission devices when the load fluctuates, reduces the vibration and noise of the terminal equipment, and the all-mechanical structure has no risk of hydraulic oil leakage.

[0042] The terminal device is a rotor generator 21, and one end of the output shaft 17 is fixed coaxially with the rotating shaft of the rotor generator 21. The terminal device shown in this embodiment is the rotor generator 21, which does not represent the only one. The initial shaft 15, the intermediate shaft 16, or the output shaft 17 can also be extended outward and coaxially connected to other external devices, solving the problem of "strong specificity and poor adaptability" of traditional transmission devices. For example, a flywheel can be fixed coaxially at one end of the intermediate shaft 16 to indirectly display the speed of the gearbox 14 (not shown in this embodiment).

[0043] The bracket 22 mentioned in this embodiment is used to lift the relevant parts to a suitable height for easy operation and maintenance; the bearing support 23 adopts a split structure (the upper cover and the base are connected by bolts) to facilitate the installation and disassembly of shaft components. Users can choose to install according to actual conditions.

[0044] Operation: After the rotary motor 1 is started, its output shaft rotates gear A2. Gear A2 meshes with gear B3, driving the coaxial shaft 4 of gear B3. A rotating wheel 5 is fixed to one end of the shaft 4, rotating synchronously with it. An inclined sleeve 501 on the edge of the rotating wheel 5 drives a built-in transmission rod 6, causing it to expand and contract axially and oscillate radially due to the sleeve's tilt, while following the circular motion of the rotating wheel 5. The other end of the transmission rod 6 is connected to the swing slot 8 of the transmission shaft 7 via a pin 9. This expansion and contraction causes the transmission shaft 7 to oscillate back and forth about its axis. A U-shaped bracket 10 at the other end of the transmission shaft 7 drives the swing lever 11 to oscillate. The swing lever 11, via an eccentric U-shaped seat 13 on the surface of the transmission disc 12, converts this oscillating motion into continuous rotation of the disc 12. The rotation of transmission plate 12 drives the coaxially fixed primary shaft 15. Gear C 18 on primary shaft 15 meshes with gear D 19 on intermediate shaft 16, driving intermediate shaft 16 to rotate. Gear D 19 then meshes with gear E 20 on output shaft 17, transmitting power to output shaft 17. By adjusting the relative coordination of gears C, D, and E, output shaft 17 achieves the desired speed and torque, ultimately driving terminal equipment such as rotor generator 21.

[0045] After the motor power is turned off, the rotating motor 1 completely stops rotating, the output torque of the rotating motor 1 disappears, and each component decelerates and stops under the action of friction and the inertia of the two flywheels until all components are completely stationary, and the inertia force of the two flywheels is completely consumed by friction resistance.

[0046] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

[0047] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

Claims

1. A power transmission device, comprising an input portion at the front end, a conversion portion in the middle, a speed change portion at the rear end, and a terminal device; characterized in that: The input part is provided with a flywheel A (24) and a rotating wheel (5); a sleeve (501) is fixed on the outer edge of the circumference of the rotating wheel (5), and a transmission rod (6) is slidably connected inside the sleeve (501); the conversion part is provided with a transmission shaft (7) and a transmission plate (12), and the transmission shaft (7) is connected to the transmission rod (6) and the transmission plate (12) at the same time; the speed change part is provided with a gearbox (14) and a flywheel B (25), and the gearbox (14) is provided with an initial shaft (15), an intermediate shaft (16) and an output shaft (17) in sequence and parallel to each other, and the three shafts are connected by gears inside the gearbox (14).

2. A power transmission device according to claim 1, characterized in that: The input part is further provided with a rotating motor (1), a gear A (2) is fixed on the output shaft of the rotating motor (1), and the gear A (2) is engaged with a gear B (3); the gear B (3) is coaxially fixed on a rotating shaft (4), and the rotating wheel (5) is coaxially fixed on one end of the rotating shaft (4).

3. A power transmission device according to claim 2, characterized in that: The flywheel A (24) is coaxially fixed to the other end of the rotating shaft (4).

4. A power transmission device according to claim 3, characterized in that: The sleeve (501) is fixed obliquely on the outer edge of the circumference of the rotating wheel (5).

5. A power transmission device according to claim 4, characterized in that: One end of the transmission shaft (7) is radially provided with a swing groove (8), and a pin shaft (9) is vertically provided in the swing groove (8). The transmission rod (6) is rotatably connected to the pin shaft (9) in the swing groove (8).

6. A power transmission device according to claim 5, characterized in that: A U-shaped frame (10) is vertically fixed to the outer surface of the other end of the transmission shaft (7), and a swing rod (11) is rotatably connected inside the U-shaped frame (10); a U-shaped seat (13) is eccentrically provided on one surface of the transmission disc (12), and the U-shaped seat (13) is rotatably connected to the swing rod (11) inside; the end of the transmission rod (6) connected to the transmission shaft (7) is a quadrangular prism structure, and the end matched with the sleeve (501) is a cylindrical structure.

7. A power transmission device according to claim 1, characterized in that: The initial shaft (15) is fixed vertically and coaxially on the other surface of the transmission disc (12), and the output shaft (17) is connected to the terminal device.

8. A power transmission device according to claim 7, characterized in that: The flywheel B (25) is coaxially fixed to one end of the intermediate shaft (16).

9. A power transmission device according to claim 8, characterized in that: A gear C (18) is fixed coaxially in the middle of the initial shaft (15), a gear D (19) is fixed coaxially in the middle of the intermediate shaft (16), a gear E (20) is fixed coaxially in the middle of the output shaft (17), the gear C (18) meshes with the gear D (19), and the gear D (19) meshes with the gear E (20).

10. A power transmission device according to claim 9, characterized in that: The terminal device is a rotor generator (21), and one end of the output shaft (17) is fixed coaxially with the rotating shaft of the rotor generator (21).

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