CN203703051U - Concave cycloidal gear structure - Google Patents
Concave cycloidal gear structure Download PDFInfo
- Publication number
- CN203703051U CN203703051U CN201320857673.XU CN201320857673U CN203703051U CN 203703051 U CN203703051 U CN 203703051U CN 201320857673 U CN201320857673 U CN 201320857673U CN 203703051 U CN203703051 U CN 203703051U
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- Prior art keywords
- gear
- cycloidal gear
- tooth
- pin
- cycloidal
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Abstract
The utility model discloses a concave cycloidal gear structure, which comprises a cycloidal gear which is meshed with a group of gear teeth annularly arranged on a pinwheel; the tooth surface on the periphery of the cycloidal gear forms a downward concave surface; each gear tooth form a drum shape with an outward-convex middle part; the curved surface of the outward-convex drum-shaped middle side wall of each pin tooth is matched with the downward concave surface of the cycloidal gear, so as to form meshing drive. According to the concave cycloidal gear structure, the contact area of the cycloidal gear and the pin teeth is large, the stress is uniform, and moreover, the cycloidal gear is high in transmission efficiency and long in service life.
Description
Technical field
The utility model relates to retarder technology, relates in particular a kind of spill cycloidal gear structure.
Background technique
The Gear Planet Transmission mode of engagement in driving mechanism in existing balancing point pinwheel reducer adopts conventionally, referring to Fig. 1, driving mechanism comprises: input shaft 11, eccentric bushing 12, gear pin 13, pin gear sleeve 14, cycloid wheel 15, output shaft 16, pin 17, column sleeve 18.Z
hindividual gear pin 13 is socketed respectively a pin gear sleeve 14, and according to default pinwheel reference radius equal angles circle distribution fixing, like this, Z
hindividual pin gear sleeve 14 has just formed the pinwheel as the central gear of Gear Planet Transmission, and the axial alignment of the center of this pinwheel and input shaft 11 and output shaft 16.Cycloid wheel 15 is as the planet wheel of Gear Planet Transmission, and have for the multiple tooth Z engaging of pin gear sleeve 14
cindividual tooth.The central position of cycloid wheel 15 has the first circular hole, the one end that is used as the eccentric bushing 12 of planet carrier is inserted in the first circular hole by a bearing (not shown), and the other end of eccentric bushing 12 is socketed on input shaft 11, be connected with the bias of output shaft 16 thereby realize cycloid wheel 15.
Like this, when input shaft 11 with angular velocity n in the time that its axis is rotated in the forward, cycloid wheel 15 or under the drive of eccentric bushing 12 around the axis of input shaft 11 circle, and by the rotation with multiple tooth engagement of pin gear sleeve 14 of its cycloid tooth, thereby by column sleeve 18 and pin 17 on output shaft 16 lands 19, drive output shaft 16 with angular velocity n/Z
ccounterrotating.
Above-mentioned existing planet-cycloid reducer, cycloid wheel is meshed with the pin tooth (gear pin) of one group of annular array on pin gear, to form the poor interior engaging speed reducer structure as a tooth of tooth (in order to reduce friction, in the little speed reducer of speed ratio, on pin tooth with pin gear sleeve), realize and slowing down by its driving mechanism.For in traditional cycloidal gear rotating mechanism, the flank profil of pinwheel is cylndrical surface, as shown in Figure 2, the pin gear sleeve 14 of gear pin 13 and socket is cylindrical, in cycloid wheel 15, form the gear that coordinates cylindrical pinwheel transmission, form corrugated arc-plane, thus the gear teeth in cycloid wheel respectively and with columniform pin tooth engagement driving.For columniform pin toothing, cycloidal gear and pin tooth contact area are little, and cycloidal gear transmission efficiency is general, and working life is short.In the structural design of the design people for above-mentioned pinwheel, do not attain perfect caused disappearance, and deeply design, and active research improvement has a fling at and development and Design goes out this creation.
Model utility content
The purpose of this utility model is to provide a kind of spill cycloidal gear structure, and this cycloidal gear and pin tooth contact area are large, stressed even, and cycloidal gear transmission efficiency is high, long service life.
In order to reach above-mentioned purpose, solution of the present utility model is:
A kind of spill cycloidal gear structure, comprise that cycloid wheel is meshed with the pin tooth of one group of annular array on pinwheel, the flank of tooth of cycloid wheel periphery forms concave surface, and pin tooth forms the cydariform of middle part evagination, and the cydariform sidewall curved surface of pin tooth middle part evagination is engaged in engagement driving in the concave surface of cycloid wheel.
Adopt after said structure, the utility model is different from the flank profil of the pinwheel of the cylndrical surface in traditional cycloidal gear rotating mechanism, adopt such cooperating structure, the in the situation that of same thickness, it is large that the area of contact of the contact area rate common cycloid gear between cycloidal gear and pin tooth is wanted, therefore stressed even, weares and teares little, cycloidal gear transmission efficiency is high, long service life.
Accompanying drawing explanation
Fig. 1 is the decomposing state schematic perspective view of drive mechanism in existing planet-cycloid reducer;
Fig. 2 is existing cycloid wheel and pin tooth cooperating structure schematic diagram;
Fig. 3 is the utility model structural representation;
Fig. 4 is the utility model structural representation;
Fig. 5 is the utility model schematic side view.
Embodiment
In order further to explain the technical solution of the utility model, below by specific embodiment, the utility model is elaborated.
Main improvements of the present utility model are coordinating of cycloid wheel and pin tooth in cycloidal gear structure, and in conjunction with shown in Fig. 3 to Fig. 5, in the utility model, cycloid wheel 2 is meshed with the pin tooth 3 of one group of annular array on pinwheel.In the utility model, the flank of tooth of cycloid wheel 2 peripheries forms concave surface 21, has formed the faying surface that can carry out transmission for pin tooth 3.And pin tooth 3 forms the cydariform of middle part evagination, the cydariform sidewall curved surface of pin tooth 3 middle part evaginations can be engaged in and in concave surface 21, fill a part contact and carry out engagement driving, guarantee that cycloid wheel 2 is while rotating, the evagination cydariform face of pin tooth 3 can the concave surface 21 in cycloid wheel 2 in transmission, form engagement fit.
To in cycloid wheel, coordinate the flank of tooth engaging with pin tooth to form concave surface 21, and pin tooth 3 forms the cydariform of middle part evagination, the cydariform face of evagination area than columniform pin flank increases, and concave surface 21 in cycloid wheel coordinates pin tooth 3, thereby increase the surface of contact between cycloid wheel and pin tooth 3.They are different from the flank profil of the pinwheel of the cylndrical surface in traditional cycloidal gear rotating mechanism, adopt such cooperating structure, the in the situation that of same thickness, it is large that the area of contact of the contact area rate common cycloid gear between cycloidal gear and pin tooth 3 is wanted, therefore stressed even, wear and tear little, cycloidal gear transmission efficiency is high, long service life.Can realize in theory properly without sideshake engagement, thereby have " zero " return difference characteristic, the contact ratio of cycloid pinwheel planetary gear transmission system is large, and its bearing capacity is large, mesh stiffness is high.
To sum up, compared with general gear transmission, feature of the present utility model is: 1. contact stress is little, even wearing; 2. the contact ratio of flank profil is larger, and flexural strength is large; 3. compact structure, also can obtain larger velocity ratio.
Above-described embodiment and graphic and non-limiting product form of the present utility model and style, suitable variation or modification that any person of an ordinary skill in the technical field does it, all should be considered as not departing from patent category of the present utility model.
Claims (1)
1. a spill cycloidal gear structure, comprise that cycloid wheel is meshed with the pin tooth of one group of annular array on pinwheel, it is characterized in that: the flank of tooth of cycloid wheel periphery forms concave surface, and pin tooth forms the cydariform of middle part evagination, the cydariform sidewall curved surface of pin tooth middle part evagination is engaged in engagement driving in the concave surface of cycloid wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320857673.XU CN203703051U (en) | 2013-12-24 | 2013-12-24 | Concave cycloidal gear structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320857673.XU CN203703051U (en) | 2013-12-24 | 2013-12-24 | Concave cycloidal gear structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203703051U true CN203703051U (en) | 2014-07-09 |
Family
ID=51053497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320857673.XU Expired - Fee Related CN203703051U (en) | 2013-12-24 | 2013-12-24 | Concave cycloidal gear structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203703051U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107237864A (en) * | 2017-05-17 | 2017-10-10 | 大连交通大学 | Curved surface Cycloid Steel Ball Planetary Transmission decelerator |
| CN112032271A (en) * | 2020-09-04 | 2020-12-04 | 深圳市易美迅智能科技有限公司 | Power output device |
-
2013
- 2013-12-24 CN CN201320857673.XU patent/CN203703051U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107237864A (en) * | 2017-05-17 | 2017-10-10 | 大连交通大学 | Curved surface Cycloid Steel Ball Planetary Transmission decelerator |
| CN112032271A (en) * | 2020-09-04 | 2020-12-04 | 深圳市易美迅智能科技有限公司 | Power output device |
| CN112032271B (en) * | 2020-09-04 | 2021-08-10 | 深圳市易美迅智能科技有限公司 | Power output device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140709 Termination date: 20161224 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |