Gear box transmission mechanism

Abstract

The utility model discloses a gearbox transmission mechanism, relates to the related field of gearbox transmission, and aims to solve the problems that an existing gearbox is of a pure gear type structure, meshing is not smooth, rattling sound is made or clearance transmission is generated during rotation, if complete meshing is achieved to reduce the rattling sound, the required gear machining precision is extremely high, and the machining difficulty is increased. A worm, a first duplicate gear, a second duplicate gear, a third duplicate gear, a fourth duplicate gear, a fifth duplicate gear and an output gear are arranged in the gearbox body, the first duplicate gear is matched with the worm in a meshed mode, and the second duplicate gear and the third duplicate gear are both matched with the first duplicate gear in a meshed mode. The second duplicate gear is matched with the fourth duplicate gear in a meshed mode, the third duplicate gear is matched with the fifth duplicate gear in a meshed mode, and the output gear is matched with the fourth duplicate gear and the fifth duplicate gear in a meshed mode.

Description

Technical Field

[0001] This utility model relates to the field of gearbox transmission, specifically a gearbox transmission mechanism. Background Technology

[0002] With the development of technology, people have higher requirements for the user experience of the devices around them. To adapt to complex scenarios and achieve functions such as saving space and improving interactive experience, gearboxes have significant advantages in many scenarios. As the core component of a mechanical transmission system, the gearbox adjusts the speed, torque, and transmission direction through the meshing of internal gears, and its performance directly affects the operating efficiency and lifespan of the equipment. In fields such as industrial automation, wind power generation, ship propulsion, and heavy machinery, gearboxes need to cope with multiple challenges such as high load, high speed, complex working conditions, and environmental adaptability.

[0003] Existing gearbox equipment uses a pure gear structure, which has poor meshing, produces a clicking sound or gap transmission when rotating, resulting in significant vibration. Furthermore, the load capacity of a single pair of gears is small. To achieve full meshing to reduce the clicking sound, extremely high gear machining precision is required, which increases the difficulty of processing. Moreover, with a single set of gears, the load cannot be distributed, and gap errors are easily generated during meshing. If applied to flip screen equipment, screen shaking or jitter will reduce the lifespan of the flip screen equipment. Utility Model Content

[0004] The purpose of this utility model is to provide a gearbox transmission mechanism to solve the problems mentioned in the background art, which are that the existing gearboxes adopt a pure gear structure, the meshing is not smooth, and a clicking sound or gap transmission is generated when rotating. If full meshing is to be achieved to reduce the clicking sound, the gears need to be processed with extremely high precision, which increases the difficulty of processing.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a gearbox transmission mechanism, including a gearbox housing, a worm gear rotatably connected to the right side inside the gearbox housing, a first double gear arranged along the rear end of the worm gear inside the gearbox housing, the first double gear meshing with the worm gear, a second double gear and a third double gear respectively arranged along the upper and lower ends of the left side of the worm gear inside the gearbox housing, the second double gear and the third double gear symmetrically meshing, both the second double gear and the third double gear meshing with the first double gear, the second double gear and the third double gear being connected by a first connecting shaft. The gearbox housing is connected to the gearbox body. Inside the gearbox housing, a fourth double gear is arranged along the front end of the left side of the second double gear. The second double gear meshes with the fourth double gear. The fourth double gear is connected to the gearbox housing via a second connecting shaft. Inside the gearbox housing, a fifth double gear is arranged along the rear end of the left side of the third double gear. The third double gear meshes with the fifth double gear. The fifth double gear is connected to the gearbox housing via a third connecting shaft. Inside the gearbox housing, an output gear is arranged in the middle of the leftmost side. The output gear meshes with both the fourth and fifth double gears.

[0006] Preferably, a motor is installed on one side of the gearbox housing, and the output shaft at the left end of the motor is engaged with the shaft hole inside the worm gear.

[0007] Preferably, the worm is provided with an auxiliary gear at its front end, and the worm is meshed with the external helical teeth of the auxiliary gear.

[0008] Preferably, the first double gear includes a helical gear located at the rear end of the worm, and the worm meshes with the outer helical tooth portion of the helical gear.

[0009] Preferably, the first double gear further includes a drive gear, which is fixed to the upper and lower ends of the helical gear. The second and third double gears both include a first toothed disc, and the first toothed discs on the second and third double gears are respectively meshed with the drive gears at the upper and lower ends.

[0010] Preferably, the second and third double gears further include a second toothed disc, which is fixed to the inner end of the first toothed disc and has a smaller diameter than the first toothed disc. The fourth and fifth double gears both include a third toothed disc. The third toothed disc on the fourth double gear is located at the left front end of the second toothed disc on the second double gear and meshes with the second toothed disc. The third toothed disc on the fifth double gear is located at the left rear end of the second toothed disc on the third double gear and meshes with the second toothed disc.

[0011] Preferably, the fourth and fifth double gears further include a fourth toothed disc, which is fixed to the inner end of the third toothed disc and has a smaller diameter than the third toothed disc. The output gear is meshed with the fourth toothed disc on both the fourth and fifth double gears.

[0012] Preferably, an output shaft is connected through the output gear, and ball bearings are rotatably connected to both the upper and lower ends of the output shaft.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] (1) In this utility model, the design of worm gear and helical gear transmission and multi-stage gear meshing, compared with simple gear transmission, realizes that the mechanism has backlash, the transmission accuracy is increased, the impact and vibration during the transmission process are effectively reduced, the gear meshing is smoother, and the transmission noise is greatly reduced.

[0015] (2) In this utility model, the transmission is carried out by paired gears instead of single gears. Multiple gears participate in the transmission, and the load is reasonably distributed to each gear. The overall load-bearing capacity is increased. Stable transmission performance can be maintained under both light and heavy load conditions. This avoids the problem of increased wear and shortened life due to excessive load on a single gear, and extends the service life of the entire transmission mechanism.

[0016] (3) In this utility model, the load is shared by multiple gears through paired gear transmission, and the symmetrical meshing cancels out some vibration, resulting in less noise. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a gearbox transmission mechanism according to the present invention;

[0018] Figure 2 This is a top view of a gearbox transmission mechanism according to the present invention;

[0019] Figure 3 This is a front view of a gearbox transmission mechanism according to the present invention;

[0020] Figure 4 This is a front view of a gearbox transmission mechanism of the present invention after the gearbox housing has been removed.

[0021] In the diagram: 1. Gearbox housing; 2. Motor; 3. Worm gear; 4. Auxiliary gear; 5. First double gear; 6. Helical gear; 7. Drive gear; 8. Second double gear; 9. Third double gear; 10. First connecting shaft; 11. First gear plate; 12. Second gear plate; 13. Fourth double gear; 14. Second connecting shaft; 15. Fifth double gear; 16. Third connecting shaft; 17. Third gear plate; 18. Fourth gear plate; 19. Output gear; 20. Output shaft; 21. Ball bearing. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Please see Figures 1-4 One embodiment provided by this utility model:

[0024] (1) Motor and worm gear

[0025] A motor 2 is mounted on one side of the gearbox housing 1. The output shaft of the motor 2 is tightly fitted with the shaft hole inside the worm gear 3. The motor 2 serves as the power source for the entire transmission mechanism, providing power for the rotation of the worm gear 3. When the motor 2 starts, its output shaft drives the worm gear 3 to rotate. An auxiliary gear 4 is provided at the front end of the worm gear 3. The worm gear 3 meshes with the helical teeth on the outside of the auxiliary gear 4. This design makes the worm gear 3 rotate more smoothly. The auxiliary gear 4 provides auxiliary support to one side of the worm gear 3, preventing it from easily tilting due to unilateral force. This reduces the shaking and vibration of the worm gear 3 during rotation, providing good initial conditions for subsequent transmission. It effectively reduces noise and vibration caused by the instability of the worm gear 3, and improves the stability and reliability of the entire transmission mechanism.

[0026] (2) First stage of transmission: worm gear and first double gear

[0027] The first double gear 5 is located inside the gearbox housing 1 along the rear end of the worm 3 and meshes with the worm 3.

[0028] The first double gear 5 includes a helical gear 6, which is located at the rear end of the worm 3. The worm 3 meshes with the helical teeth on the outside of the helical gear 6. When the motor 2 drives the worm 3 to rotate, power is transmitted to the first double gear 5 through the meshing relationship between the worm 3 and the helical gear 6, thus realizing the first stage of transmission. This worm-helical gear transmission method has a large transmission ratio and smooth transmission, avoiding the large impact and noise caused by direct gear meshing in traditional pure gear transmission.

[0029] (3) Second stage transmission: First double gear and second and third double gears

[0030] The first double gear 5 also includes a drive gear 7, which is fixed to the upper and lower ends of the helical gear 6.

[0031] Inside the gearbox housing 1, a second double gear 8 and a third double gear 9 are respectively arranged at the upper and lower ends of the left side of the worm 3. The second double gear 8 and the third double gear 9 are connected to the gearbox housing 1 through the first connecting shaft 10. The second double gear 8 and the third double gear 9 are symmetrical and both mesh with the first double gear 5.

[0032] The first gear disc 11 on the second double gear 8 and the third double gear 9 meshes with the upper and lower drive gears 7 respectively. When the first double gear 5 rotates, its drive gear 7 drives the second double gear 8 and the third double gear 9 to rotate, realizing the power transmission from the first double gear 5 to the second double gear 8 and the third double gear 9, i.e., the second stage of transmission. This transmission method with multiple gears meshing simultaneously distributes the load across multiple gears, greatly improving the transmission's load-bearing capacity. Compared with single-gear transmission, the load distribution is more reasonable, avoiding the problems of increased wear and shortened lifespan caused by excessive load on a single gear. At the same time, the coordinated work of multiple gears makes the transmission smoother, reducing vibration and noise caused by backlash transmission, further improving the stability and reliability of the transmission mechanism, and providing strong support for equipment requiring stable transmission, such as flip-screen devices.

[0033] (4) Third stage transmission: the second and third double gears and the fourth and fifth double gears

[0034] The second double gear 8 and the third double gear 9 also include a second gear disk 12, which is fixed to the inner end of the first gear disk 11, and the diameter of the second gear disk 12 is smaller than the diameter of the first gear disk 11.

[0035] A fourth double gear 13 is provided inside the gearbox housing 1 along the front end of the left side of the second double gear 8. The fourth double gear 13 is connected to the gearbox housing 1 through the second connecting shaft 14. A fifth double gear 15 is provided inside the gearbox housing 1 along the rear end of the left side of the third double gear 9. The fifth double gear 15 is connected to the gearbox housing 1 through the third connecting shaft 16.

[0036] Both the fourth double gear 13 and the fifth double gear 15 include a third gear disk 17. The third gear disk 17 on the fourth double gear 13 is located at the left front end of the second gear disk 12 on the second double gear 8 and meshes with the second gear disk 12. The third gear disk 17 on the fifth double gear 15 is located at the left rear end of the second gear disk 12 on the third double gear 9 and meshes with the second gear disk 12. When the second double gear 8 and the third double gear 9 rotate, their second gear disks 12 drive the fourth double gear 13 and the fifth double gear 15 to rotate respectively, realizing the third stage of transmission. This multi-stage gear transmission layout further optimizes the power transmission path, enabling more stable and efficient power transmission.

[0037] (5) Fourth stage transmission: Fourth and fifth double gears and output gear

[0038] The fourth double gear 13 and the fifth double gear 15 also include a fourth gear disk 18, which is fixed to the inner end of the third gear disk 17, and the diameter of the fourth gear disk 18 is smaller than the diameter of the third gear disk 17.

[0039] An output gear 19 is located in the middle of the leftmost side inside the gearbox housing 1. The output gear 19 is meshed with the fourth gear disk 18 on the fourth double gear 13 and the fifth double gear 15.

[0040] An output shaft 20 is connected through the output gear 19, and ball bearings 21 are rotatably connected to both the upper and lower ends of the output shaft 20. The use of ball bearings 21 makes the rotation of the output shaft 20 smoother, reduces friction and wear during rotation, and improves the service life of the output shaft 20.

[0041] When the fourth double gear 13 and the fifth double gear 15 rotate, the fourth gear disc 18 on them drives the output gear 19 to rotate, with the output shaft 20 serving as the output end, completing the fourth stage of transmission. This design, where multiple gears jointly drive the output gear 19, makes the output torque more uniform and stable, greatly improving the quality and reliability of the output power. This transmission method can better adapt to different load requirements, maintaining stable transmission performance under both light and heavy load conditions, providing strong support for the normal operation of various equipment.

[0042] Working principle: The motor 2 drives the worm 3 to rotate, and through the meshing connection between the worm 3 and the helical gear 6 on the first double gear 5, the first double gear 5 is driven to rotate, so that the worm 3 transmits power to the first double gear 5, that is, the first stage of transmission;

[0043] The meshing connection between the drive gear 7 on the helical gear 6 and the first gear disk 11 on the second double gear 8 and the third double gear 9 drives the second double gear 8 and the third double gear 9 to rotate, thereby realizing the transmission of power from the first double gear 5 to the second double gear 8 and the third double gear 9, which is the second stage of transmission.

[0044] The two second gear disks 12 on the second double gear 8 and the third double gear 9 are respectively meshed with the third gear disks 17 on the fourth double gear 13 and the fifth double gear 15, so that the second double gear 8 and the third double gear 9 can transmit power to the fourth double gear 13 and the fifth double gear 15, that is, the third pole transmission.

[0045] The fourth gear 18 on the fourth double gear 13 and the fifth double gear 15 meshes with the output gear 19, thereby transmitting power from the fourth double gear 13 and the fifth double gear 15 to the output gear 19. The output shaft 20 of the output gear 19 is the output end, thus completing the fourth stage of transmission.

[0046] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A gearbox transmission mechanism comprising a gearbox casing (1), characterised in that: The worm (3) is rotatably connected to the right side of the gearbox box (1), the first double gear (5) is arranged along the rear end of the worm (3) in the gearbox box (1), the first double gear (5) is meshed with the worm (3), the second double gear (8) and the third double gear (9) are arranged along the upper and lower ends of the left side of the worm (3) in the gearbox box (1) respectively, the second double gear (8) and the third double gear (9) are symmetrically matched, the second double gear (8) and the third double gear (9) are meshed with the first double gear (5), the second double gear (8) and the third double gear (9) are connected with the gearbox box (1) through the first connecting shaft (10), the fourth double gear (13) is arranged along the front end of the left side of the second double gear (8) in the gearbox box (1), the second double gear (8) is meshed with the fourth double gear (13), the fourth double gear (13) is connected with the gearbox box (1) through the second connecting shaft (14), the fifth double gear (15) is arranged along the rear end of the left side of the third double gear (9) in the gearbox box (1), the third double gear (9) is meshed with the fifth double gear (15), the fifth double gear (15) is connected with the gearbox box (1) through the third connecting shaft (16), the output gear (19) is arranged in the middle of the leftmost side in the gearbox box (1), the output gear (19) is meshed with the fourth double gear (13) and the fifth double gear (15).

2. A gearbox drive mechanism according to claim 1, characterised in that: The motor (2) is installed on one side of the gearbox box (1), and the left end output shaft of the motor (2) is matched with the shaft hole in the worm (3).

3. A gearbox drive mechanism according to claim 1, characterised in that: The worm (3) is provided with an auxiliary gear (4) at the front end, and the worm (3) is meshed and connected with the external helical tooth part of the auxiliary gear (4).

4. A gearbox drive mechanism according to claim 1, characterised in that: The first double gear (5) includes a helical gear (6), and the helical gear (6) is located at the rear end of the worm (3), and the worm (3) is meshed and connected with the external helical tooth part of the helical gear (6).

5. A gearbox drive mechanism according to claim 4, wherein: The first double gear (5) further includes a driving gear (7), and the driving gear (7) is fixed to the upper and lower ends of the helical gear (6), the second double gear (8) and the third double gear (9) each include a first tooth disc (11), and the first tooth disc (11) on the second double gear (8) and the third double gear (9) is respectively meshed and connected with the driving gear (7) at the upper and lower ends.

6. A gearbox drive mechanism according to claim 5, wherein: The second double gear (8) and the third double gear (9) further comprise a second gear disc (12) fixed to the inner end of the first gear disc (11), and the diameter of the second gear disc (12) is smaller than that of the first gear disc (11), the fourth double gear (13) and the fifth double gear (15) each comprise a third gear disc (17), the third gear disc (17) on the fourth double gear (13) is located at the left front end of the second gear disc (12) on the second double gear (8) and is in meshing connection with the second gear disc (12), and the third gear disc (17) on the fifth double gear (15) is located at the left rear end of the second gear disc (12) on the third double gear (9) and is in meshing connection with the second gear disc (12).

7. A gearbox drive mechanism according to claim 6, characterised in that: The fourth double gear (13) and the fifth double gear (15) further comprise a fourth gear disc (18) fixed to the inner end of the third gear disc (17), and the diameter of the fourth gear disc (18) is smaller than that of the third gear disc (17), and the output gear (19) is in meshing connection with the fourth gear disc (18) on the fourth double gear (13) and the fifth double gear (15).

8. A gearbox drive mechanism according to claim 1, characterised in that: The output gear (19) is connected with an output rotating shaft (20) penetratingly, and the upper and lower ends of the outer portion of the output rotating shaft (20) are rotatably connected with ball bearings (21).

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