CN213393409U - Gear transmission speed reducer - Google Patents
Gear transmission speed reducer Download PDFInfo
- Publication number
- CN213393409U CN213393409U CN202022413648.5U CN202022413648U CN213393409U CN 213393409 U CN213393409 U CN 213393409U CN 202022413648 U CN202022413648 U CN 202022413648U CN 213393409 U CN213393409 U CN 213393409U
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- gear
- wave generator
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Abstract
The utility model provides a gear drive speed reducer, including input shaft, output shaft, wave generator, flexbile gear and rigid wheel, the input shaft sleeve has the wave generator, and the flexbile gear suit is outside the wave generator, and the rigid wheel has still been meshed outside the flexbile gear, and the output shaft coincides with the input shaft axis, and the flexbile gear is fixed connection on the output shaft, the input shaft is fixed with the input casing through bearing one, and input casing one side is installed the input end cover, and the output shaft is installed the output casing through bearing two, and output casing one side is installed the output end cover; the rigid wheel is provided with internal teeth, the internal teeth of the rigid wheel have certain inclination angles, external teeth are arranged on the flexible wheel, the wave generator consists of a swing arm and rolling bearings, the rolling bearings are installed at two ends of the swing arm, and sealing rings are arranged at two ends of the flexible wheel. The short tube flexible gear has small axial size and enough installation space, and the rigid gear teeth have inclination angles along the axial direction to improve the transmission rigidity and the bearing capacity.
Description
Technical Field
The utility model belongs to the technical field of gear unit, concretely relates to gear drive decelerator.
Background
The gear transmission is a device for transmitting motion and power by a gear pair, and is a mechanical transmission mode which is most widely applied in various modern equipment. Its advantages are high accuracy, efficiency and reliability, compact structure and long service life. The speed reducer is used for low-speed and large-torque transmission equipment, and the purposes of reducing the speed and increasing the torque are achieved by meshing a motor, an internal combustion engine or other high-speed running power with a gear with a small number of teeth on an input shaft of the speed reducer with a large gear on an output shaft.
At present, common speed reducers with harmonic speed reducers and equivalent transmission ratios are mostly adopted in the prior art, parts are reduced by fifty percent, the volume is reduced by about one third, the transmission ratio range is large, the bearing capacity is large, the harmonic speed reducers on the market all adopt common cup-shaped flexible gears, the harmonic speed reducers are limited due to the installation space, the flexible gears are usually shorter and better, and the axial size of the common cup-shaped flexible gears is larger.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a gear drive decelerator, flexbile gear axial dimensions is short, and transmission rigidity is good, and bearing capacity is bigger.
The utility model provides a following technical scheme:
a gear transmission speed reducer comprises an input shaft, an output shaft, a wave generator, a flexible gear and a rigid gear, wherein the input shaft is sleeved with the wave generator, the flexible gear is sleeved outside the wave generator, the rigid gear is meshed outside the flexible gear, the axis of the output shaft is overlapped with that of the input shaft, the flexible gear is fixedly connected to the output shaft, the input shaft is fixedly provided with an input shell through a first bearing, one side of the input shell is provided with an input end cover, the output shaft is provided with an output shell through a second bearing, and one side of the output shell is provided with an output end cover; the rigid wheel is provided with internal teeth, the internal teeth of the rigid wheel have certain inclination angles, external teeth are arranged on the flexible wheel, the wave generator consists of a swing arm and rolling bearings, the rolling bearings are installed at two ends of the swing arm, and sealing rings are arranged at two ends of the flexible wheel.
Preferably, the flexspline is a short cylinder flexspline.
Preferably, the flexspline is provided with an anti-bending ring.
Preferably, the flexspline is splined to the output shaft.
The utility model has the advantages that: the common speed reducer with the transmission ratio has fifty percent of parts, about one third of volume reduction, large transmission ratio range, large bearing capacity, stable motion and no noise, and can adjust the side clearance of the ruler, thereby having high transmission efficiency. The short tube flexible gear has small axial size and enough installation space, and the rigid gear teeth have inclination angles along the axial direction to improve the transmission rigidity and the bearing capacity.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic sectional view of the present invention;
FIG. 2 is a schematic cross-sectional view of the flexspline of the present invention;
FIG. 3 is a schematic cross-sectional view of the rigid wheel of the present invention;
fig. 4 is a schematic structural view of a wave generator according to the present invention;
fig. 5 is a schematic view of the transmission structure of the present invention.
Labeled as: 1 input shaft, 2 input shells, 3 bearing I, 4 sealing rings, 5 rigid wheels, 6 output shells, 7 output shafts, 8 input end covers, 9 wave generators, 10 flexible wheels, 11 anti-bending rings, 12 output end covers, 13 swing arms, 14 rolling bearings, 15 inclination angles, 16 bearing II and 17 internal teeth.
Detailed Description
As shown in fig. 1, 2, 3 and 4, a gear transmission speed reducer comprises an input shaft 1, an output shaft 7, a wave generator 9, a flexible gear 10 and a rigid gear 5, wherein the input shaft 1 is sleeved with the wave generator 9, the flexible gear 10 is sleeved outside the wave generator 9, the rigid gear 5 is further meshed outside the flexible gear 10, the output shaft 7 is overlapped with the axis of the input shaft 1, the flexible gear 10 is fixedly connected to the output shaft 7, the input shaft 1 is fixedly provided with an input shell 2 through a first bearing 3, an input end cover 8 is installed on one side of the input shell 2, the output shaft 7 is provided with an output shell 6 through a second bearing 16, and an output end cover 12 is installed on one side of the output shell 6. The flexible gear 10 is connected with the output shaft 7 through a spline, so that the guide performance is good, and the stress is uniform. The torsional rigidity is good.
The rigid gear 5 is provided with internal teeth 17, the internal teeth 17 of the rigid gear have certain inclination angles 15, and through the inclination of the internal teeth 17 of the rigid gear, the meshing area of the gear teeth of the rigid gear and the gear teeth of the flexible gear is larger, so that the transmission rigidity and the bearing capacity are improved. The flexible gear 10 is a short-tube flexible gear, the axial size is smaller, and the installation space of the shell is enough. The flexspline 10 is provided with an anti-bending ring 11. The flexible gear 10 is further provided with external teeth, the rigid gear internal teeth 17 and the flexible gear external teeth can be meshed and meshed when the wave generator 9 rotates, the wave generator 9 is composed of a swing arm 13 and rolling bearings 14, the rolling bearings 14 are installed at two ends of the swing arm 13, and the sealing rings 4 are arranged at two ends of the flexible gear 10, so that required radial deformation can be obtained under a smaller axial size.
As shown in fig. 5, the length of the wave generator 9 is larger than the inner circle diameter of the non-deformed flexible gear 10, when the wave generator 9 is installed in the flexible gear 10, the flexible gear 10 is forced to generate elastic deformation to become an ellipse, so that the gear teeth of the flexible gear 10 at the major axis are inserted into the inner gear 17 of the rigid gear, and when the wave generator 9 continuously rotates, the flexible gear 10 is continuously deformed, so that the inner gear 17 of the rigid gear is meshed with and meshed with the outer gear of the flexible gear, and the staggered teeth motion is generated.
The utility model discloses when using, the motor drives wave generator 9 and rotates, because the 9 length of wave generator slightly is greater than the hole diameter of flexbile gear 10, flexbile gear 10 props into oval, forces flexbile gear 10 to mesh completely at oval major axis direction and fixed rigid wheel 5, separates completely at minor axis direction. Because the rigid wheel 5 is fixed, when the wave generator 9 rotates anticlockwise, the flexible wheel 10 rotates clockwise. When the wave generator 9 rotates continuously, the flexible gear 10 is engaged by the engaging direction and the rotating direction, and is disengaged by the engaging direction and the rotating direction, so that the flexible gear 10 rotates continuously. When one tooth of the flexible gear 10 is meshed with one tooth of the rigid gear 5 to be meshed with the tooth of the rigid gear 5 again along with the rotation of the wave generator 9, the flexible gear rotates just for one circle, the wave generator 9 rotates for many circles at the moment, the ratio of the number of the rotation circles of the wave generator 9 to the number of the rotation circles of the flexible gear 10 is large, the meshing area of the inner teeth of the rigid gear and the outer teeth of the flexible gear is larger through the inclination of the inner teeth 17 of the rigid gear, and the transmission rigidity and the bearing capacity are improved.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. A gear transmission speed reducer comprises an input shaft (1), an output shaft (7), a wave generator (9), a flexible gear (10) and a rigid gear (5), and is characterized in that the input shaft (1) is sleeved with the wave generator (9), the flexible gear (10) is sleeved outside the wave generator (9), the rigid gear (5) is further meshed outside the flexible gear (10), the output shaft (7) is overlapped with the axis of the input shaft (1), the flexible gear (10) is fixedly connected to the output shaft (7), the input shaft (1) is fixedly provided with an input shell (2) through a first bearing (3), one side of the input shell (2) is provided with an input end cover (8), the output shaft (7) is provided with an output shell (6) through a second bearing (16), and one side of the output shell (6) is provided with an output end cover (12); rigid wheel (5) are equipped with internal tooth (17), and rigid wheel (5) internal tooth (17) have certain inclination (15), are equipped with the external tooth on flexbile gear (10), wave generator (9) comprise swing arm (13) and antifriction bearing (14), antifriction bearing (14) are installed at swing arm (13) both ends, flexbile gear (10) both ends are equipped with sealing ring (4).
2. A gear reduction unit according to claim 1, wherein the flexspline (10) is a short-tube flexspline.
3. Gear reduction unit according to claim 1, wherein the flexspline (10) is provided with an anti-bending ring (11).
4. A gear reduction unit according to claim 1, characterised in that the flexspline (10) is splined to the output shaft (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022413648.5U CN213393409U (en) | 2020-10-26 | 2020-10-26 | Gear transmission speed reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022413648.5U CN213393409U (en) | 2020-10-26 | 2020-10-26 | Gear transmission speed reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213393409U true CN213393409U (en) | 2021-06-08 |
Family
ID=76190707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022413648.5U Active CN213393409U (en) | 2020-10-26 | 2020-10-26 | Gear transmission speed reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213393409U (en) |
-
2020
- 2020-10-26 CN CN202022413648.5U patent/CN213393409U/en active Active
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