CN221704372U - Low-vibration high-speed ratio precise gearbox - Google Patents

Abstract

The invention provides a low-vibration high-speed ratio precise gearbox, which relates to the technical field of gearboxes and comprises the following components in part by part; the transmission mechanism comprises a shell, a vibration reduction mechanism is arranged at the bottom of the shell, a frame is arranged on one side of the shell, a motor is arranged on the inner wall of the frame, a bevel gear is arranged at one end of an output shaft of the motor, a gear disc is arranged on the surface of the bevel gear, and a first rotating rod is arranged on the inner wall of the gear disc. According to the invention, the weight distribution of the whole connecting rod and the connecting part can be more uniform by adding the weight wheel through the installed balance mechanism. When the connecting rod and the driven gear rotate, the inertia force and the centrifugal force of the heavy wheel can be mutually offset with those of other parts, so that the integral vibration amplitude of the heavy wheel is reduced. The weight balance design can reduce the vibration level of the transmission system, improve the stability and dynamic response characteristics of the system, and can effectively control the integral vibration by increasing the weight wheels to realize weight balance.

Description

Low-vibration high-speed ratio precise gearbox

Technical Field

The invention relates to the technical field of gearboxes, in particular to a low-vibration high-speed ratio precise gearbox.

Background

A gearbox is a mechanical transmission that is used primarily to convert input power (typically an electric motor, an engine, etc.) into a desired output torque and rotational speed. It is widely used in various fields including industrial production, mechanical manufacturing, transportation, energy sources, etc.

The speed ratio between the input shaft and the output shaft can be changed by combining gears with different sizes in the gear box. This allows the rotational speed of the output shaft to be adjusted under different operating conditions to accommodate different mechanical and process requirements, and also to efficiently transfer power from one component to another. The power of the input shaft can be transmitted through the meshing of the gears, so that the output shaft can smoothly drive required equipment or machinery to finish the required operation.

However, in the prior art, when vibration is damped, a damping device, such as a damper pad, a damper, etc., is usually added to the structure of the gear box to effectively reduce transmission and generation of vibration, but this method cannot balance the weight of the transmission system, such as the weight of the transmission system is not balanced, which may cause additional vibration. These vibrations can be transmitted to other components and structures during operation, causing problems such as noise, damage, and fatigue. Vibrations can also lead to reduced accuracy, affecting the performance and reliability of the system, while bearings will be subjected to additional loads when the drive train is unbalanced. Unbalanced weight can lead to uneven load distribution of the bearing, aggravate abrasion and damage of the bearing, and shorten the service life of the bearing.

Disclosure of Invention

The invention aims to solve the defects in the prior art, and provides a low-vibration high-speed ratio precise gearbox.

In order to achieve the above purpose, the present invention adopts the following technical scheme: comprises the following steps of; the transmission mechanism comprises a shell, the bottom of the shell is provided with a vibration reduction mechanism, one side of the shell is provided with a frame, the inner wall of the frame is provided with a motor, one end of an output shaft of the motor is provided with a bevel gear, the surface of the bevel gear is provided with a gear disc, the inner wall of the gear disc is provided with a first rotating rod, two sides of the gear disc are provided with limiting teeth, the inner end of the first rotating rod is provided with a transmission shaft, the other end of the transmission shaft is provided with a second rotating rod, the surface of the second rotating rod is provided with a driving gear, the surface of the driving gear is provided with a balance mechanism, the outer ends of the first rotating rod and the second rotating rod are provided with a fixing frame, and the inner side of the fixing frame is provided with a gasket.

As a preferred implementation mode, the balance mechanism comprises a driven gear, the inner wall of the driven gear is fixedly connected with the surface of a connecting rod, limiting rings are arranged on two sides of the driven gear, the inner wall of the limiting rings is fixedly connected with the surface of the connecting rod, one end surface of the connecting rod, which is far away from the driven gear, is fixedly connected with the inner wall of a heavy wheel, the surfaces of two ends of the connecting rod are rotatably connected with the inner walls of two corresponding connecting frames, and the two connecting frames are fixed by screw threads of a screw groove formed in one side of a shell through bolts.

As a preferred implementation mode, the inner sides of the connecting frames are fixedly connected with shock insulation pads, one end surface of the connecting rod, which is far away from the heavy wheel, is fixedly connected with the inner ring of the bearing, the outer ring of the bearing is fixedly connected with the outer side of the connecting frame, which is close to the driven gear, and the inner ring of the bearing is fixedly connected with the inner end surface of the connecting shaft.

As a preferred implementation mode, the vibration reduction mechanism comprises a bottom plate, four supporting frames are fixedly connected to the top of the bottom plate, sliding grooves formed in the inner sides of the supporting frames are respectively and slidably connected with a sliding block, and the other sides of the sliding blocks are respectively and fixedly connected with the surface of the shell.

As a preferred implementation mode, the bottom plate top is provided with four bases, a plurality of equal fixedly connected with spacing in base top, a plurality of equal fixedly connected with spring in spacing inner wall, a plurality of equal fixedly connected with movable frame of the other end of spring, a plurality of equal fixedly connected with a plurality of mounting panels in base and movable frame surface, a plurality of the screw thread groove screw thread fixed that the base was offered through a plurality of mounting panels and bolt and bottom plate top, a plurality of the screw thread groove screw thread fixed that the movable frame offered through a plurality of mounting panels and bolt and casing bottom.

As a preferred embodiment, the frame is screwed with a thread groove formed in the shell through a plurality of bolts, and the surface of the motor is fixedly connected with the inside of the frame.

As a preferable implementation mode, one end of the motor output shaft penetrates through a clamping groove formed in the shell and is fixedly connected with one end of the conical gear, and the surface of the conical gear is meshed with the surface of the gear disc.

As a preferred implementation mode, the inner wall of the gear disc is fixedly connected with the surface of the first rotating rod, and the inner walls of the two limiting teeth are fixedly connected with the surface of the first rotating rod.

As a preferred implementation mode, the inner end of the first rotating rod is fixedly connected with one end of a transmission shaft, the other end of the transmission shaft is fixedly connected with the inner end of a second rotating rod, the surface of the second rotating rod is fixedly connected with the inner wall of a driving gear, and the surface of the driving gear is meshed with the surface of a driven gear

As a preferred implementation mode, the outer end surfaces of the first rotating rod and the second rotating rod are rotationally connected with the inner walls of two corresponding fixing frames, and gaskets are fixedly connected with the back sides of the two fixing frames.

Compared with the prior art, the invention has the advantages and positive effects that:

1. In the invention, the rotation stability of the transmission system can be ensured by the installed transmission mechanism. The connection mode can be matched with the limiting teeth to effectively transfer torque, axial or radial displacement caused by connection weakness is reduced, reliability and stability of transmission are guaranteed, meanwhile, power can be effectively transferred through the conical gears, the gear disc and the inner walls of the limiting teeth and the surface of the first rotating rod, and energy loss is reduced. This helps to improve the efficiency and performance of the drive train;

Simultaneously, through the thread groove thread tightening that a plurality of bolts and casing were seted up, can also make the connecting force distribute more evenly, reduced single tie point and born too big pressure, also reduced the not hard up risk of bolt simultaneously.

2. According to the invention, the weight distribution of the whole connecting rod and the connecting part can be more uniform by adding the weight wheels through the installed balance mechanism. When the connecting rod and the driven gear rotate, the inertia force and the centrifugal force of the heavy wheel can be mutually offset with those of other parts, so that the integral vibration amplitude of the heavy wheel is reduced. The weight balance design can reduce the vibration level of the transmission system, improve the stability and dynamic response characteristics of the system, and can effectively control the whole vibration by increasing the weight wheel to realize weight balance, improve the stability and working performance of the transmission system, and simultaneously reduce noise and energy loss caused by vibration, thereby improving the quality and reliability of the whole transmission system;

The use of the shock-insulating pad can effectively reduce the force and vibration transmitted to the connecting rod and the bearing due to the vibration. They are capable of absorbing and dispersing vibration energy, thereby reducing vibration amplitude and noise levels of the drive train and improving the comfort and stability of the drive train.

3. In the invention, the stability and the precision of the whole system can be provided by the installed vibration reduction mechanism. The existence of the limiting frame not only can limit the movement range of the movable frame, but also can ensure the precision and stability of the system, and meanwhile, the existence of the spring can also provide the effects of shock absorption and vibration absorption. When the spring is subjected to external impact or vibration, the spring can absorb and disperse part of impact force and vibration energy, so that the degree of transmission to other components is reduced, and the stability and reliability of the system are improved.

Drawings

FIG. 1 is a perspective view of a low vibration high speed ratio precision gearbox according to the present invention;

FIG. 2 is a sectional view of a transmission mechanism of a low-vibration high-speed ratio precision gearbox and a perspective view of the side surfaces of a balancing mechanism and a vibration reduction mechanism;

FIG. 3 is a perspective view of a portion of the transmission mechanism and a side of the balancing mechanism of the low-vibration high-speed-ratio precision gearbox according to the present invention;

FIG. 4 is a partially disassembled side perspective view of a transmission mechanism of a low-vibration high-speed ratio precision gearbox according to the present invention;

FIG. 5 is a perspective view of a side view of a partial transmission mechanism and a disassembly of a balancing mechanism of a low-vibration high-speed-ratio precision gearbox according to the present invention;

FIG. 6 is a perspective view of a side view of a balancing mechanism of a low vibration high speed ratio precision gearbox according to the present invention;

Fig. 7 is a perspective view of a side of a vibration reduction mechanism of a low vibration high speed ratio precision gearbox according to the present invention.

Fig. 8 is a partially disassembled side perspective view of a vibration damping mechanism of a low-vibration high-speed ratio precision gear box according to the present invention.

Legend description:

1. a transmission mechanism; 11. a housing; 12. a frame; 13. a motor; 14. a bevel gear; 15. a gear plate; 16. a first rotating lever; 17. limit teeth; 18. a transmission shaft; 19. a second rotating rod; 110. a drive gear; 111. a gasket; 112. a fixing frame;

2. A balancing mechanism; 21. a driven gear; 22. a connecting rod; 23. a limiting ring; 24. a heavy wheel; 25. a connecting frame; 26. a shock insulation pad; 27. a bearing; 28. a connecting shaft;

3. a vibration damping mechanism; 31. a bottom plate; 32. a support frame; 33. a slide block; 34. a base; 35. a limiting frame; 36. a spring; 37. a movable frame; 38. and (3) mounting a plate.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Example 1

As shown in fig. 1-5, the present invention provides a technical solution: a low vibration high speed ratio precision gearbox comprising; the transmission mechanism 1, the transmission mechanism 1 includes casing 11, casing 11 bottom is provided with damping mechanism 3, casing 11 one side is provided with frame 12, frame 12 inner wall is provided with motor 13, motor 13 output shaft one end is provided with conical gear 14, conical gear 14 surface is provided with gear wheel 15, gear wheel 15 inner wall is provided with first bull stick 16, gear wheel 15 both sides all are provided with spacing tooth 17, first bull stick 16 inner is provided with transmission shaft 18, the transmission shaft 18 other end is provided with second bull stick 19, second bull stick 19 surface is provided with driving gear 110, driving gear 110 surface is provided with balancing mechanism 2, first bull stick 16 and second bull stick 19 outer end all are provided with mount 112, the mount 112 inboard all is provided with gasket 111.

In the embodiment, the frame 12 is fixed with a thread groove formed in the shell 11 through a plurality of bolts, and the surface of the motor 13 is fixedly connected with the inside of the frame 12; through the mutual matching of the components, a plurality of bolts are fixed, so that more firm connection can be provided, the motor 13 can be effectively prevented from being shifted or loosened due to vibration or external impact during operation, the stability and the safety of equipment are ensured, meanwhile, the connecting force can be distributed more uniformly through the threaded fixation of the bolts and the threaded grooves formed in the shell 11, the overlarge pressure born by a single connecting point is reduced, and the risk of loosening the bolts is also reduced;

one end of an output shaft of the motor 13 penetrates through a clamping groove formed in the shell 11 and is fixedly connected with one end of the conical gear 14, the surface of the conical gear 14 is meshed with the surface of the gear disc 15, the inner wall of the gear disc 15 is fixedly connected with the surface of the first rotating rod 16, and the inner walls of the two limiting teeth 17 are fixedly connected with the surface of the first rotating rod 16; through above subassembly mutually supporting, can pass through starter motor 13 when the staff uses, can drive conical gear 14 and rotate when motor 13 is started its output shaft, mesh with the gear disk 15 surface through conical gear 14 surface, can drive gear disk 15 simultaneously and rotate when conical gear 14 rotates to realize transmission work, this transmission method not only can ensure transmission system's rotation stability. The connection mode is matched with the limiting teeth 17, torque can be effectively transmitted, axial or radial displacement caused by loose connection is reduced, reliability and stability of transmission are guaranteed, and meanwhile, power can be effectively transmitted through the conical gear 14, the gear disc 15 and the inner wall of the limiting teeth 17 and the surface of the first rotating rod 16 in a fixed mode, and energy loss is reduced. This helps to improve the efficiency and performance of the transmission.

The inner end of the first rotating rod 16 is fixedly connected with one end of a transmission shaft 18, the other end of the transmission shaft 18 is fixedly connected with the inner end of a second rotating rod 19, the surface of the second rotating rod 19 is fixedly connected with the inner wall of a driving gear 110, and the surface of the driving gear 110 is meshed with the surface of a driven gear 21; through the mutual cooperation of the components, when the gear disc 15 rotates, the first rotating rod 16 is synchronously driven to rotate, the first rotating rod 16 synchronously drives the transmission shaft 18 and the second rotating rod 19 to rotate in the rotation process, when the second rotating rod 19 rotates, the driving gear 110 is synchronously driven to rotate, when the driving gear 110 rotates, the surface is meshed with the surface of the driven gear 21, the driven gear 21 is synchronously driven to rotate, and through the meshing of the driving gear 110 and the driven gear 21, the efficient transmission can be realized. When the gear disk 15 rotates, the first rotating rod 16, the transmission shaft 18 and the second rotating rod 19 rotate synchronously, and power is transmitted to the driven gear 21 through the rotation of the driving gear 110, so that the purpose of transmission is achieved, and meanwhile, the stability of a transmission system can be ensured through the fixed connection of a plurality of components, such as the connection of the first rotating rod 16 and the transmission shaft 18, the connection of the transmission shaft 18 and the second rotating rod 19 and the connection of the second rotating rod 19 and the driving gear 110. The connecting mode can effectively transfer torque, reduce axial or radial displacement caused by loose connection, and ensure the reliability and stability of transmission;

The outer end surfaces of the first rotating rod 16 and the second rotating rod 19 are respectively and rotatably connected with the inner walls of two corresponding fixing frames 112, and gaskets 111 are fixedly connected to the back sides of the two fixing frames 112; by the above components being mutually matched, the structural firmness can be increased by adopting two fixing frames 112 to support the first rotating rod 16 and the second rotating rod 19 and fixing the connecting gaskets 111 on the back sides of the fixing frames 112. The presence of the spacer 111 may provide additional support and stability to prevent excessive rocking and loosening of the drive components during operation;

Example two

As shown in fig. 1-6, the balancing mechanism 2 comprises a driven gear 21, the inner wall of the driven gear 21 is fixedly connected with the surface of a connecting rod 22, limiting rings 23 are arranged on two sides of the driven gear 21, the inner walls of the two limiting rings 23 are fixedly connected with the surface of the connecting rod 22, one end surface of the connecting rod 22, which is far away from the driven gear 21, is fixedly connected with the inner wall of a heavy wheel 24, the two end surfaces of the connecting rod 22 are rotatably connected with the inner walls of two corresponding connecting frames 25, and the two connecting frames 25 are fixed with screw threads of a screw thread groove formed in one side of the shell 11 through bolts.

In this embodiment, through the above components mutually cooperating, by arranging the limiting rings 23 on two sides of the driven gear 21 and fixedly connecting the inner walls of the two limiting rings 23 with the surface of the connecting rod 22, additional protection can be provided for the driven gear 21. When the driven gear 21 is used for a long time, certain friction is generated with the connecting rod 22 to cause the gap displacement of the connecting part, the limiting ring 23 can limit the rotation range, and the safety problem caused by exceeding the allowable limit is prevented.

By adding the weight wheel 24, a more even weight distribution of the entire connecting rod 22 and connecting parts can be achieved. When the connecting rod 22 and the driven gear 21 rotate, the inertial force and centrifugal force of the heavy wheel 24 cancel each other out with those of other components, thereby reducing the overall vibration amplitude thereof. The weight balance design can reduce the vibration level of the transmission system, improve the stability and dynamic response characteristics of the system, and can effectively control the whole vibration by increasing the weight wheel 24 to improve the stability and working performance, and reduce noise and energy loss caused by vibration, thereby improving the quality and reliability of the whole transmission system.

The inner sides of the two connecting frames 25 are fixedly connected with shock insulation pads 26, one end surface of the connecting rod 22, which is far away from the heavy wheel 24, is fixedly connected with an inner ring of a bearing 27, an outer ring of the bearing 27 is fixedly connected with the outer side of the connecting frame 25, which is close to the driven gear 21, and the inner ring of the bearing 27 is fixedly connected with the inner end surface of a connecting shaft 28; by the above components being combined, the use of the shock-insulating pad 26 can effectively reduce the force and vibration transmitted to the connecting rod 22 and the bearing 27 due to the vibration. They can absorb and disperse vibration energy, thereby reducing vibration amplitude and noise level of the transmission system, improving comfort and stability of the transmission system,

Example III

As shown in fig. 1-8, the vibration damping mechanism 3 includes a bottom plate 31, four supporting frames 32 are fixedly connected to the top of the bottom plate 31, sliding grooves formed in the inner sides of the supporting frames 32 are all slidably connected with sliding blocks 33, and the other sides of the sliding blocks 33 are all fixedly connected with the surface of the shell 11.

In the present embodiment, by the above components being mated, the support and stabilization of the bottom plate 31 can be provided by using the combination of the support frame 32 and the slider 33. The support frame 32 can bear the weight of the bottom plate 31 and distribute the load, ensuring smooth running of the bottom plate 31. The sliding connection of the sliding block 33 can reduce the friction resistance of the bottom plate 31 in the moving process and improve the moving efficiency.

Four bases 34 are arranged at the top of the bottom plate 31, limiting frames 35 are fixedly connected to the tops of the bases 34, springs 36 are fixedly connected to the inner walls of the limiting frames 35, movable frames 37 are fixedly connected to the other ends of the springs 36, a plurality of mounting plates 38 are fixedly connected to the surfaces of the bases 34 and the movable frames 37, the bases 34 are in threaded fixation with threaded grooves formed in the tops of bolts and the bottom plate 31 through the mounting plates 38, and the movable frames 37 are in threaded fixation with threaded grooves formed in the bottoms of the bolts and the shell 11 through the mounting plates 38; by the cooperation of the above components, stability and accuracy of the entire system can be provided by the combination of the plurality of bases 34 and the stopper 35. The existence of the limiting frame 35 not only can limit the movement range of the movable frame 37, but also can ensure the precision and stability of the system, and meanwhile, the existence of the spring 36 can also provide the effects of shock absorption and vibration absorption. When it is subjected to external impact or vibration, the spring 36 is able to absorb and disperse part of the impact and vibration energy, reducing the extent to which it is transferred to other components, improving the stability and reliability of the system.

Working principle:

As shown in fig. 1-8, when a worker uses the electric motor 13, the output shaft of the electric motor 13 drives the bevel gear 14 to rotate after being started, the surface of the bevel gear 14 is meshed with the surface of the gear disc 15, the bevel gear 14 synchronously drives the gear disc 15 to rotate, the gear disc 15 synchronously drives the first rotating rod 16 to rotate, the first rotating rod 16 synchronously drives the transmission shaft 18 and the second rotating rod 19 to rotate in the rotating process, the second rotating rod 19 synchronously drives the driving gear 110 to rotate, the surface of the driving gear 110 is meshed with the surface of the driven gear 21 when rotating, the driven gear 21 synchronously drives the connecting rod 22 and the inner ring of the bearing 27 to rotate when the driven gear 21 rotates, and the connecting shaft 28 is driven to rotate when the inner ring of the bearing 27 rotates, so that the whole transmission mode is completed;

By adding the weight wheel 24, a more even weight distribution of the entire connecting rod 22 and connecting parts can be achieved. When the connecting rod 22 and the driven gear 21 rotate, the inertial force and centrifugal force of the heavy wheel 24 cancel each other out with those of other components, thereby reducing the overall vibration amplitude thereof. The weight balance design can reduce the vibration level of the transmission system and improve the stability and dynamic response characteristics of the system.

The present invention is not limited to the above-mentioned embodiments, and any equivalent embodiments which can be changed or modified by the technical content disclosed above can be applied to other fields, but any simple modification, equivalent changes and modification made to the above-mentioned embodiments according to the technical substance of the present invention without departing from the technical content of the present invention still belong to the protection scope of the technical solution of the present invention.

Claims (10)

1. A low vibration high speed ratio precision gear box is characterized in that: comprises the following steps of; drive mechanism (1), drive mechanism (1) includes casing (11), casing (11) bottom is provided with damping mechanism (3), casing (11) one side is provided with frame (12), frame (12) inner wall is provided with motor (13), motor (13) output shaft one end is provided with conical gear (14), conical gear (14) surface is provided with toothed disc (15), toothed disc (15) inner wall is provided with first bull stick (16), toothed disc (15) both sides all are provided with spacing tooth (17), first bull stick (16) inner is provided with transmission shaft (18), the transmission shaft (18) other end is provided with second bull stick (19), second bull stick (19) surface is provided with driving gear (110), driving gear (110) surface is provided with balance mechanism (2), first bull stick (16) and second bull stick (19) outer end all are provided with mount (112), mount (112) inboard all are provided with gasket (111).

2. A low vibration high speed ratio precision gearbox as defined in claim 1, wherein: balance mechanism (2) are including driven gear (21), driven gear (21) inner wall and connecting rod (22) fixed surface are connected, driven gear (21) both sides all are provided with spacing ring (23), two spacing ring (23) inner wall all with connecting rod (22) fixed surface are connected, one end surface and heavy wheel (24) inner wall fixed connection of driven gear (21) are kept away from to connecting rod (22), connecting rod (22) both ends surface all rotates with two link (25) inner walls that correspond to be connected, two link (25) are through the screw groove screw thread fixed that screw bolt and casing (11) one side were seted up.

3. A low vibration high speed ratio precision gearbox as defined in claim 2, wherein: the inner sides of the two connecting frames (25) are fixedly connected with shock insulation pads (26), one end surface of the connecting rod (22) far away from the heavy wheel (24) is fixedly connected with an inner ring of the bearing (27), an outer ring of the bearing (27) is fixedly connected with the outer side of the connecting frame (25) close to the driven gear (21), and the inner ring of the bearing (27) is fixedly connected with the inner end surface of the connecting shaft (28).

4. A low vibration high speed ratio precision gearbox as defined in claim 1, wherein: the vibration reduction mechanism (3) comprises a bottom plate (31), four supporting frames (32) are fixedly connected to the top of the bottom plate (31), sliding grooves formed in the inner sides of the supporting frames (32) are respectively and slidably connected with a sliding block (33), and the other sides of the sliding blocks (33) are respectively and fixedly connected with the surface of the shell (11).

5. The low-vibration high-speed ratio precision gearbox as set forth in claim 4, wherein: four bases (34) are arranged at the top of the bottom plate (31), the bases (34) are fixedly connected with limiting frames (35) at the top, the limiting frames (35) are fixedly connected with springs (36) at the inner walls, the springs (36) are fixedly connected with movable frames (37) at the other ends, the bases (34) are fixedly connected with mounting plates (38) on the surfaces of the movable frames (37), the bases (34) are fixedly connected with screw grooves formed in the tops of bolts and the bottom plate (31) through the mounting plates (38), and the movable frames (37) are fixedly connected with screw grooves formed in the bottoms of the bolts and the shell (11) through the mounting plates (38).

6. A low vibration high speed ratio precision gearbox as defined in claim 1, wherein: the machine frame (12) is fixed with a thread groove formed in the shell (11) through a plurality of bolts, and the surface of the motor (13) is fixedly connected with the inside of the machine frame (12).

7. A low vibration high speed ratio precision gearbox as defined in claim 1, wherein: one end of an output shaft of the motor (13) penetrates through a clamping groove formed in the shell (11) and is fixedly connected with one end of the conical gear (14), and the surface of the conical gear (14) is meshed with the surface of the gear disc (15).

8. A low vibration high speed ratio precision gearbox as defined in claim 1, wherein: the inner wall of the gear disc (15) is fixedly connected with the surface of the first rotating rod (16), and the inner walls of the two limiting teeth (17) are fixedly connected with the surface of the first rotating rod (16).

9. A low vibration high speed ratio precision gearbox as defined in claim 1, wherein: the inner end of the first rotating rod (16) is fixedly connected with one end of the transmission shaft (18), the other end of the transmission shaft (18) is fixedly connected with the inner end of the second rotating rod (19), the surface of the second rotating rod (19) is fixedly connected with the inner wall of the driving gear (110), and the surface of the driving gear (110) is meshed with the surface of the driven gear (21).

10. A low vibration high speed ratio precision gearbox as defined in claim 1, wherein: the outer end surfaces of the first rotating rod (16) and the second rotating rod (19) are rotationally connected with the inner walls of two corresponding fixing frames (112), and gaskets (111) are fixedly connected to the back sides of the two fixing frames (112).