CN220600405U - Motor speed reducer - Google Patents
Motor speed reducer Download PDFInfo
- Publication number
- CN220600405U CN220600405U CN202322382441.XU CN202322382441U CN220600405U CN 220600405 U CN220600405 U CN 220600405U CN 202322382441 U CN202322382441 U CN 202322382441U CN 220600405 U CN220600405 U CN 220600405U
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- gear
- curved surface
- polyurethane
- polyurethane elastic
- surface body
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- 239000003638 chemical reducing agent Substances 0.000 title abstract description 14
- 229920002635 polyurethane Polymers 0.000 claims abstract description 63
- 239000004814 polyurethane Substances 0.000 claims abstract description 63
- 230000009467 reduction Effects 0.000 claims abstract description 28
- 229920006351 engineering plastic Polymers 0.000 claims description 4
- 238000001746 injection moulding Methods 0.000 claims 2
- 230000000149 penetrating effect Effects 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 description 13
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000005255 carburizing Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 238000004663 powder metallurgy Methods 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
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- Gear Transmission (AREA)
- Gears, Cams (AREA)
Abstract
The utility model discloses a motor speed reducing device, in particular to the technical field of motor speed reduction, which comprises a speed reducing assembly connected with an output end of a motor, wherein the speed reducing assembly comprises a first gear, a second gear, a shaft gear and a third gear which are meshed with each other, an elastic connector is arranged between the second gear and the shaft gear, the elastic connector comprises a polyurethane elastic ring, a plurality of polyurethane elastic curved surfaces are fixedly arranged at the bottom end of the polyurethane elastic ring, a mounting plate is arranged at the top end of the polyurethane elastic ring, a plurality of second curved surfaces are fixedly arranged at the bottom end of the mounting plate, grooves are formed between the plurality of second curved surfaces, the polyurethane elastic curved surfaces are all arranged in the grooves, the inner side surfaces of the polyurethane elastic curved surfaces are attached to the outer side surfaces of the second curved surfaces, and a tooth-shaped hole penetrating through the mounting plate is formed in the center of the mounting plate. The utility model solves the vibration and noise reduction problems of the motor speed reducer through the design of the elastic connector.
Description
Technical Field
The utility model relates to the technical field of motor speed reduction, in particular to a motor speed reduction device.
Background
The speed reducer is a power for driving a motor, an internal combustion engine or other high-speed operation, the purpose of reducing speed is achieved by meshing a gear with a small number of teeth on an input shaft of the speed reducer with a large gear on an output shaft, and the speed reducer also improves output torque while reducing speed, so that the speed reducer is suitable for low-rotation-speed and high-torque transmission equipment. And thus are widely used in the field of industrial control.
In order to achieve a certain reduction ratio, the speed reducer generally needs to perform multistage speed reduction, and is usually implemented by adopting multistage gear meshing, and meanwhile, in order to transmit large torque, a high-strength steel gear is often adopted, but in actual operation, vibration and noise can become the largest defects of mechanism operation, and although the gear formed by engineering plastics can play a role in vibration reduction and noise reduction, the defects of strength and easy aging easily occur gear teeth distortion and fracture.
Disclosure of Invention
In order to overcome the defects in the prior art, the utility model provides the motor speed reducer, and the vibration reduction and noise reduction problems of the motor speed reducer are solved through the design of the elastic connector.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the motor speed reducer includes one speed reducing assembly with motor output end, and the speed reducing assembly includes one first gear, one second gear, one shaft gear and one third gear meshed mutually and steel gear for conventional gear machining and heat treatment.
Be equipped with elastic connector between second gear and the axle gear, elastic connector includes polyurethane elasticity ring, polyurethane elasticity ring bottom mounting is equipped with a plurality of polyurethane elasticity curved surface bodies, polyurethane elasticity ring top is equipped with the mounting disc, mounting disc bottom mounting is equipped with a plurality of second curved surface bodies, and forms the recess between a plurality of second curved surface bodies, in a plurality of polyurethane elasticity curved surface bodies all locate the recess, and the medial surface of polyurethane elasticity curved surface body is laminated with the lateral surface of second curved surface body, the profile of tooth hole that runs through the mounting disc has been seted up to mounting disc center department.
Preferably, the plurality of polyurethane elastic curved surface bodies are all involute-shaped, and the plurality of polyurethane elastic curved surface bodies are distributed in an annular array around the tooth-shaped holes, and the geometric characteristics of the involute of the polyurethane elastic curved surface bodies are utilized, so that the contact surface of power transmission and vibration absorption and noise reduction is increased, and the gear train is uniformly stressed during running and stable in transmission.
Preferably, the second curved surface bodies are all involute-shaped, and are distributed in an annular array around the tooth-shaped holes, and the geometric characteristics of the involute of the second curved surface bodies are utilized to increase the contact surface for power transmission and vibration absorption and noise reduction, so that the gear train is uniformly stressed during operation, and the transmission is stable.
Preferably, the inside fixed mounting cylinder that is equipped with of second gear, the inside bottom mounting of mounting cylinder is equipped with a plurality of first curved surface bodies, and a plurality of first curved surface bodies all are involute, and a plurality of first curved surface bodies are annular array distribution around the profile of tooth hole, utilize the geometric properties of first curved surface body involute, have increased the contact surface that power inherited and absorbed vibration and make an uproar falls, and the atress is even when making train operation, and the transmission is steady.
Preferably, the polyurethane elastic ring and the polyurethane elastic curved surface body are arranged inside the mounting cylinder, and the inner side surface of the first curved surface body is attached to the outer side surface of the polyurethane elastic curved surface body.
Preferably, the shaft gear penetrates through the tooth-shaped hole and is matched with the tooth-shaped hole, the wheel shaft of the shaft gear penetrates through the second gear, and the wheel shafts at the two ends of the shaft gear are respectively provided with a first bearing and a second bearing.
Preferably, the polyurethane elastic ring and the polyurethane elastic curved surface body are integrally injection molded by polyurethane, the mounting plate and the second curved surface body are integrally injection molded by engineering plastics, and the second gear is not suitable for conventional cutting processing due to the fact that a plurality of involute curved surface grooves are formed in the end face, and is suitable for powder metallurgy integral molding and carburizing and quenching heat treatment.
Preferably, the motor is connected with the first gear through a coupler, and an axle is fixedly arranged in the third gear.
The utility model has the technical effects and advantages that:
1. according to the utility model, through the buffer effect of the polyurethane elastic ring and the polyurethane elastic curved surface bodies in the elastic connector, the elastic connection of the second gear and the shaft gear is realized, so that vibration and noise generated during gear engagement transmission are released to a great extent;
2. through designing polyurethane elastic curved surface body, second curved surface body and first curved surface body into involute, make full use of the geometric properties of involute, the mutual laminating of a great deal of involute curved surface body has increased the contact surface that power was born and was fallen with the vibration absorption and noise reduction by a wide margin, and the thrust according to any point on the contact surface all points the tangential direction of gradually shape line base circle, makes the train atress even when moving, and the transmission is steady.
Drawings
FIG. 1 is a drive diagram of a coaxial two-stage gear reduction mechanism of the prior art;
FIG. 2 is a transmission diagram of the present utility model;
FIG. 3 is an assembled view of a second gear, shaft gear and elastomeric connector of the present utility model;
FIG. 4 is an exploded view of the second gear, shaft gear and elastomeric connector of the present utility model;
fig. 5 is an exploded view of the elastic connector of the present utility model.
The reference numerals are: a first gear, a second gear, a 3-axis gear, a third gear, a 5-wheel axle, a 6 first bearing, a 7-shaft coupling, an 8-motor, a 9-elastic connector and a 10-second bearing, wherein the first gear is a first gear, the second gear is a second gear;
21 a mounting cylinder and 22 a first curved surface body;
91 polyurethane elasticity ring, 92 polyurethane elasticity curved surface body, 93 mounting disc, 94 second curved surface body, 95 recesses, 96 profile of tooth holes.
Detailed Description
The following description of the embodiments of the present utility model 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 utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
As shown in fig. 1, in the motor speed reducer of the prior art, a motor 8 drives a first gear 1 to rotate through a coupler 7, then a second gear 2 meshed with the first gear 1 reversely rotates at a lower speed, the rotation of the second gear 2 drives a shaft gear 3 fixed on a shaft to synchronously rotate, and a third gear 4 meshed with the shaft gear 3 simultaneously rotates at a lower rotating speed and outputs a larger torque through a wheel shaft 5; since the first gear 1, the shaft gear 3 and the third gear 4 tend to use high-strength steel gears, large vibrations and noise are generated in actual operation.
In order to overcome the above disadvantages, as shown in fig. 2, the present utility model provides a motor speed reducer, which comprises a speed reducing assembly connected to the output end of a motor 8, wherein the speed reducing assembly comprises a first gear 1 and a second gear 2 which are meshed with each other, and a shaft gear 3 and a third gear 4 which are meshed with each other, the motor 8 is connected with the first gear 1 through a coupling 7, and a wheel shaft 5 is fixedly arranged in the third gear 4, unlike the prior art, an elastic connector 9 is additionally arranged between the second gear 2 and the shaft gear 3.
Specifically, as shown in fig. 3-5, the elastic connector 9 includes a polyurethane elastic ring 91, a plurality of polyurethane elastic curved surfaces 92 are fixedly disposed at the bottom end of the polyurethane elastic ring 91, the plurality of polyurethane elastic curved surfaces 92 are all involute-shaped, and the plurality of polyurethane elastic curved surfaces 92 are distributed in an annular array around the tooth-shaped hole 96.
The polyurethane elastic ring 91 top is equipped with mounting plate 93, mounting plate 93 bottom mounting is equipped with a plurality of second curved surface bodies 94, and a plurality of second curved surface bodies 94 all are involute, and a plurality of second curved surface bodies 94 are annular array distribution around tooth form hole 96, and form recess 95 between a plurality of second curved surface bodies 94, in a plurality of polyurethane elastic curved surface bodies 92 all locate recess 95, and the medial surface of polyurethane elastic curved surface body 92 is laminated with the lateral surface of second curved surface body 94.
The center of the mounting plate 93 is provided with a tooth-shaped hole 96 penetrating through the mounting plate 93, the shaft gear 3 penetrates through the tooth-shaped hole 96 and is matched with the tooth-shaped hole 96, the wheel shaft of the shaft gear 3 penetrates through the second gear 2, and the wheel shafts at the two ends of the shaft gear 3 are respectively provided with a first bearing 6 and a second bearing 10.
For cooperation with the elastic connector 9, the installation cylinder 21 is fixedly arranged in the second gear 2, a plurality of first curved surface bodies 22 are fixedly arranged at the bottom end of the installation cylinder 21, the plurality of first curved surface bodies 22 are all involute-shaped, the plurality of first curved surface bodies 22 are distributed in an annular array around the tooth-shaped holes 96, the polyurethane elastic circular ring 91 and the polyurethane elastic curved surface body 92 are all arranged in the installation cylinder 21, and the inner side surface of the first curved surface body 22 is attached to the outer side surface of the polyurethane elastic curved surface body 92.
During assembly, the upper end of the polyurethane elastic ring 91 is clamped into the groove 95 at the lower end of the mounting disc 93, the inner side surface of the polyurethane elastic curved surface body 92 on the polyurethane elastic ring 91 is attached to the outer side surface of the second curved surface body 94 on the mounting disc 93, then the shaft gear 3 is inserted into the corresponding tooth-shaped hole 96 of the mounting disc 93, and then the combination is pressed into the mounting cylinder 21 in the second gear 2 from the upper end, so that the inner side surface of the first curved surface body 22 is attached to the outer side surface of the polyurethane elastic curved surface body 92, and then the first bearing 6 and the second bearing 10 are sleeved on the two ends of the shaft gear 3. In this way, through the buffer action of the plurality of polyurethane elastic curved surface bodies 92 on the polyurethane elastic ring 91, the elastic connection between the second gear 2 and the shaft gear 3 is realized, so that the vibration and noise generated during the meshing transmission of the secondary reduction gear are released to a great extent.
Secondly, the plurality of polyurethane elastic curved surface bodies 92, the second curved surface bodies 94 and the first curved surface body 22 are designed into involute shapes, the geometric characteristics of the involute are fully utilized, a plurality of involute curved surface bodies are mutually attached, the contact surface of power transmission and vibration absorption and noise reduction is greatly increased, and the pushing force according to any point on the contact surface points to the tangential direction of the base circle of the gradual curve, so that the stress is uniform when the wheel train runs, and the transmission is stable.
In addition, the first gear 1, the shaft gear 3 and the third gear 4 are all steel gears, the conventional gear processing and heat treatment process is adopted, the second gear 2 is fully used, the conventional cutting process is not suitable for being adopted due to the fact that the end face is provided with a plurality of involute curved surface grooves, the powder metallurgy integral molding is suitable for being adopted for carrying out carburizing and quenching heat treatment, the strength and the wear resistance are comparable to those of the steel gears, and the lubricating performance is better.
The polyurethane elastic ring 91 and the polyurethane elastic curved surface body 92 are integrally injection molded by polyurethane, the mounting plate 93 and the second curved surface body 94 are integrally injection molded by high-quality engineering plastics, and compared with a method of simply adopting a plastic gear to replace a steel gear to reduce vibration and noise, the gear teeth of the gear molded by the plastic are not subjected to huge torque generated when the gears are meshed. The speed reducer with the elastic connector 9 provided by the utility model fully utilizes the large space of the end face of the second gear 2, is provided with a plurality of involute first curved surface bodies 22, and is embedded with the plurality of polyurethane elastic curved surface bodies 92, the second curved surface bodies 94 and the concave grooves 95 on the polyurethane elastic ring 91, so that the elastic connection between the second gear 2 and the shaft gear 3 is realized, and huge torque generated during power transmission is borne by the plurality of involute curved surface bodies, and meanwhile, the effects of vibration reduction and noise reduction are also realized.
Finally: the foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and principles of the utility model are intended to be included within the scope of the utility model.
Claims (8)
1. A motor reduction gear characterized in that: the motor comprises a speed reduction assembly connected with the output end of a motor (8), wherein the speed reduction assembly comprises a first gear (1) and a second gear (2) which are meshed with each other, and a shaft gear (3) and a third gear (4) which are meshed with each other, and an elastic connector (9) is arranged between the second gear (2) and the shaft gear (3);
elastic connector (9) are including polyurethane elasticity ring (91), polyurethane elasticity ring (91) bottom mounting is equipped with a plurality of polyurethane elasticity curved surface body (92), polyurethane elasticity ring (91) top is equipped with mounting disc (93), mounting disc (93) bottom mounting is equipped with a plurality of second curved surface body (94), and form recess (95) between a plurality of second curved surface body (94), in a plurality of polyurethane elasticity curved surface body (92) all locate recess (95), and the medial surface of polyurethane elasticity curved surface body (92) is laminated with the lateral surface of second curved surface body (94), tooth form hole (96) that run through mounting disc (93) are seted up in mounting disc (93) center department.
2. A motor reduction gear as defined in claim 1, wherein: the polyurethane elastic curved surface bodies (92) are all involute-shaped, and the polyurethane elastic curved surface bodies (92) are distributed in an annular array around the tooth-shaped holes (96).
3. A motor reduction gear as defined in claim 1, wherein: the second curved surfaces (94) are involute-shaped, and the second curved surfaces (94) are distributed in an annular array around the tooth-shaped holes (96).
4. A motor reduction gear as defined in claim 1, wherein: the second gear (2) is internally and fixedly provided with a mounting cylinder (21), the bottom end of the mounting cylinder (21) is internally and fixedly provided with a plurality of first curved surface bodies (22), the plurality of first curved surface bodies (22) are involute, and the plurality of first curved surface bodies (22) are distributed in an annular array around the tooth-shaped holes (96).
5. A motor reduction gear according to claim 4, wherein: the polyurethane elastic ring (91) and the polyurethane elastic curved surface body (92) are arranged inside the mounting cylinder (21), and the inner side surface of the first curved surface body (22) is attached to the outer side surface of the polyurethane elastic curved surface body (92).
6. A motor reduction gear as defined in claim 1, wherein: the shaft gear (3) penetrates through the tooth-shaped hole (96) and is matched with the tooth-shaped hole (96), the wheel shaft of the shaft gear (3) penetrates through the second gear (2), and the wheel shafts at two ends of the shaft gear (3) are respectively provided with a first bearing (6) and a second bearing (10).
7. A motor reduction gear as defined in claim 1, wherein: the polyurethane elastic circular ring (91) and the polyurethane elastic curved surface body (92) are integrally formed by polyurethane injection molding, and the mounting plate (93) and the second curved surface body (94) are integrally formed by engineering plastic injection molding.
8. A motor reduction gear as defined in claim 1, wherein: the motor (8) is connected with the first gear (1) through a coupler (7), and the wheel axle (5) is fixedly arranged in the third gear (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322382441.XU CN220600405U (en) | 2023-09-04 | 2023-09-04 | Motor speed reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322382441.XU CN220600405U (en) | 2023-09-04 | 2023-09-04 | Motor speed reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220600405U true CN220600405U (en) | 2024-03-15 |
Family
ID=90172857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322382441.XU Active CN220600405U (en) | 2023-09-04 | 2023-09-04 | Motor speed reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220600405U (en) |
-
2023
- 2023-09-04 CN CN202322382441.XU patent/CN220600405U/en active Active
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