CN208074140U - A kind of planetary reduction gear and its assembling structure with motor - Google Patents
A kind of planetary reduction gear and its assembling structure with motor Download PDFInfo
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- CN208074140U CN208074140U CN201820477688.6U CN201820477688U CN208074140U CN 208074140 U CN208074140 U CN 208074140U CN 201820477688 U CN201820477688 U CN 201820477688U CN 208074140 U CN208074140 U CN 208074140U
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- gear
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- motor
- planet carrier
- ball bearing
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Abstract
The utility model provides a kind of planetary reduction gear and its assembling structure with motor, can improve planet carrier stability, it is ensured that the accuracy of mesh between planetary gear and sun gear, ring gear, and then ensure the working efficiency of speed reducer, prolong the service life.A kind of planetary reduction gear, including reducer shell, the main body for the planet carrier being set in reducing gearbox body, planetary gear, sun gear and ring gear, the axle journal of planet carrier matches to merge by the first single-groove grooved ball bearing with reducer shell stretches out reducer shell, planetary gear is installed on the main body of planet carrier by mandrel, planetary gear is equipped with 3 or more and is engaged with sun gear, sun gear is surrounded by planetary gear and is used for and motor axis connection, ring gear is fixedly connected with reducer shell and is engaged with each planetary gear, it is characterised in that：The main body of planet carrier offers bearing hole with sun gear opposite side, and the first self-aligning ball bearing coordinated with motor shaft is equipped in bearing hole.
Description
Technical field
The utility model is related to retarder fields, and in particular to a kind of planetary reduction gear and its assembling structure with motor.
Background technology
Planetary reduction gear mainly include reducer shell, the main body for the planet carrier being set in reducing gearbox body, planetary gear,
Sun gear and ring gear, the axle journal of planet carrier matches to merge by single-groove grooved ball bearing with reducer shell stretches out reducing gearbox
Body, planetary gear are installed on the main body of planet carrier by mandrel, and planetary gear is equipped with 3 or more and is engaged with sun gear, sun gear by
Planetary gear surrounds and is used to be fixedly connected with reducer shell and engage with planetary gear with motor axis connection, ring gear.Due to row
The presence of the back lash between back lash and planetary gear and ring gear between star-wheel and sun gear, while planet carrier is only
It is supported by single-groove grooved ball bearing, that is, forms the single-point support structure to planet carrier, planet carrier is easy production during the work time
It is raw to shake, cause " beating tooth " phenomenon, i.e., planetary gear is synchronous with holder shakes, and generates beat, and the stress that beat generates will act on
Between intermeshing tooth, the hard contact between tooth and tooth is caused, and accelerates crown part wears, influences tooth form, and tooth
The variation of shape can further influence the accuracy of mesh again；And the reduction of the accuracy of mesh between planetary gear and sun gear, ring gear
It can influence the working efficiency and service life of speed reducer.
Utility model content
It is poor for the planet carrier stability of existing planetary reduction gear, influence nibbling between planetary gear and sun gear, ring gear
The technical issues of working efficiency, service life susceptible of conjunction precision and speed reducer, the utility model provides a kind of row
Star retarder can improve planet carrier stability, it is ensured that the accuracy of mesh between planetary gear and sun gear, ring gear, Jin Erbao
It demonstrate,proves the working efficiency of speed reducer, prolong the service life.
Its technical solution is a kind of such, planetary reduction gear, including reducer shell, is set in reducing gearbox body
Main body, planetary gear, sun gear and the ring gear of planet carrier, the axle journal of the planet carrier by the first single-groove grooved ball bearing with subtract
Fast device shell is installed on the main body of planet carrier, the planetary gear by mandrel with stretching reducer shell, the planetary gear is merged
It engages equipped with 3 or more and with sun gear, the sun gear is surrounded by planetary gear and is used for and motor axis connection, the ring gear
It is fixedly connected with reducer shell and is engaged with each planetary gear, it is characterised in that：The main body of the planet carrier is opposite with sun gear
Side offers bearing hole, and the first self-aligning ball bearing coordinated with motor shaft is equipped in the bearing hole.
Further, copper sheathing is equipped between the planetary gear and the mandrel, the copper sheathing is matched with the planetary gear interference
It closes and the mandrel clearance fit.
Further, the copper sheathing includes a pair of of copper sheathing halfbody, and the radial outside of the copper sheathing halfbody is equipped with and planet
The section for taking turns inner hole is L-shaped annular groove.
Further, the planetary gear side opposite with planet carrier is equipped with pressure ring, and the pressure ring passes through screw and planet
Frame is fixedly connected, and the pressure ring is equipped with the location hole coordinated with the mandrel, and the mandrel end is stretched into location hole.
Further, the described first single-groove grooved ball bearing is supported on the step surface in reducing gearbox body and by first
End ring is pressed, and the first bearing baffle ring is fixedly connected by screw with reducer shell.
In addition, the utility model additionally provides the assembling structure of above-mentioned planetary reduction gear and motor, the motor includes electricity
Casing body and motor shaft, motor shaft one end adjacent with the retarder pass through the second single-groove grooved ball bearing and motor casing
Body coordinates, and the bearing clearance of the second single-groove grooved ball bearing is more than the bearing clearance of the described first single-groove grooved ball bearing.
Further, motor shaft one end opposite with reducer shell passes through the second self-aligning ball bearing and electric machine casing
Cooperation.
Further, the electric machine casing is fixedly connected with the reducer shell by flange arrangement.
Further, it is fixed on an electric machine casing side end face adjacent with reducer shell coaxial with motor shaft
Adapter ring, reducer shell opening side are socketed on the adapter ring.
The planetary reduction gear of the utility model, by assembling the first spherical ball axis with motor shaft cooperation on planet carrier
It holds, while sun gear is used for and motor axis connection so that for planetary reduction gear with after motor assembly, planet carrier passes through the first single-row depth
Ditch ball bearing, the support of the first self-aligning ball bearing, that is, form the two point support construction to planet carrier, effectively increase the steady of planet carrier
It is qualitative；Simultaneously the first self-aligning ball bearing can to planet carrier carry out aligning, although during aligning planet carrier also will produce it is small
Angle beat（Angular range is adjusted by the first self-aligning ball bearing to be limited）, but due to the support of the first self-aligning ball bearing, it can
Planet carrier beat is greatly reduced and acts on stress between engaging tooth, weakens " beating tooth " phenomenon；The raising of planet carrier stability with
And the aligning effect between motor shaft can ensure the accuracy of mesh between planetary gear and sun gear, ring gear, and then ensure
The working efficiency of speed reducer prolongs the service life；The retarder of the utility model and the assembling structure of motor, motor shaft and deceleration
The adjacent one end of device is supported in electric machine casing by the second larger single-groove grooved ball of bearing clearance, can adapt to motor shaft Self-aligning
During beat, reduce and act on the active force of the second single-groove grooved ball bearing.
Description of the drawings
Fig. 1 is the structural schematic diagram of the planetary reduction gear of the utility model.
Fig. 2 is the assembling structure schematic diagram of the planetary reduction gear and motor of the utility model.
Specific implementation mode
As shown in Figure 1, a kind of planetary reduction gear, including reducer shell 1, the planet carrier that is set in reducer shell 1
Main body 2, planetary gear 4, sun gear 5 and ring gear 24, the axle journal 3 of planet carrier passes through the first single-groove grooved ball bearing 6 and slows down
Device shell 1 is installed on the main body 2 of planet carrier by mandrel 7 with stretching reducer shell 1, planetary gear 4 is merged, and planetary gear 4 is equipped with 3
A and engaged with sun gear 5, sun gear 5 is surrounded by planetary gear 4 and for being connect with motor shaft 8, ring gear 24 and reducing gearbox
Body 1 is fixedly connected and is engaged with each planetary gear 4, and main body 2 and 5 opposite side of sun gear of planet carrier offer bearing hole 12, axis
The first self-aligning ball bearing 13 coordinated with motor shaft 8 is installed in bearing bore.
Copper sheathing, copper sheathing and the interference fit of planetary gear 4 and 7 clearance fit of mandrel are equipped between planetary gear 4 and mandrel 7；Copper sheathing
Setting be avoided that being in direct contact for planetary gear and mandrel, reduce the abrasion of planetary gear, extend the service life of planetary gear；Together
When, copper sheathing material is copper, has suction-operated to lubricating grease, is capable of the opposite action time for extending lubricating grease, it is ensured that copper sheathing with
It is rotated between mandrel smooth.Copper sheathing includes a pair of of copper sheathing halfbody 9, and the radial outside of copper sheathing halfbody 9 is equipped with matches with planetary gear endoporus
The section of conjunction is L-shaped annular groove, for being limited to planetary gear.
The side opposite with planet carrier of planetary gear 4 is equipped with pressure ring 14, and pressure ring 14 is fixedly connected by screw with planet carrier, presses
It is equipped with the location hole coordinated with mandrel 7,7 end of mandrel is stretched into location hole；First single-groove grooved ball bearing 6 is supported in deceleration
It is pressed on step surface 11 in device shell 1 and by first bearing baffle ring 10, first bearing baffle ring 10 passes through screw and retarder
Shell 1 is fixedly connected.
As shown in Fig. 2, the assembling structure of planetary reduction gear and motor, planetary reduction gear is the above-mentioned planet in embodiment
Retarder is not repeating, and motor includes electric machine casing and motor shaft 8, and electric machine casing includes front motor casing 16 and motor rear housing
Body 17, the one end adjacent with retarder of motor shaft 8 are coordinated by the second single-groove grooved ball bearing 18 with front motor casing 16, and second
The bearing clearance of single-groove grooved ball bearing 18 is more than the bearing clearance of the first single-groove grooved ball bearing 6, motor shaft 8 and reducing gearbox
The opposite one end of body 1 is coordinated by the second self-aligning ball bearing 19 with motor rear housing body 17.Motor shaft one end adjacent with retarder is logical
It crosses the second larger single-groove grooved ball of bearing clearance and is supported in electric machine casing, can adapt to inclined during motor shaft Self-aligning
Pendulum reduces the active force for acting on the second single-groove grooved ball bearing；Motor shaft one end opposite with reducer shell passes through second
Self-aligning ball bearing coordinates with electric machine casing, has aligning effect to motor shaft, can reduce the machining accuracy of the bearing hole at this,
Reduce processing cost.
Front motor casing 16 is fixedly connected with reducer shell by flange arrangement, and flange arrangement includes reducer shell method
Orchid 21 and electric machine casing flange 22, reducer shell flange 21 and electric machine casing flange 22 are bolted.Front motor casing
16 side end faces adjacent with reducer shell are equipped with the coaxial adapter ring 15 of motor shaft, and adapter ring 15 is socketed on motor front housing
The positioning convex ring 20 of 16 front end of body is simultaneously adhesively fixed with the front end face of front motor casing, and reducer shell opening side, which is socketed on, to be turned
It connects on ring, by the setting of adapter ring, realizes the quick positioning and assembly of retarder and motor.
23 be the radial flange for being pressed the second single-groove grooved ball bearing 18 being set on motor shaft 8 in figure.
Planetary reduction gear and comparative example planetary reduction gear to above-described embodiment have carried out electromechanical testing after installing motor additional, electricity
Machine test temperature is respectively 31 DEG C, -55 DEG C and 70 DEG C, wherein comparative example planetary reduction gear and the difference of the retarder of embodiment exist
In following two points：
1, the planetary reduction gear of above-described embodiment installs the first self-aligning ball bearing 13 additional, and self-aligning ball bearing radial internal clearance is C3,
I.e. 0.01 ~ 0.02, comparative example planetary reduction gear does not install the first self-aligning ball bearing 13 additional；
2, the radial internal clearance of the second of the planetary reduction gear of above-described embodiment the single-groove grooved ball bearing be MC6, i.e., 0.02 ~
0.028, the radial internal clearance of the second single-groove grooved ball bearing of comparative example planetary reduction gear is MC6, i.e., 0.005 ~ 0.01, wherein
The radial internal clearance of first single-groove grooved ball bearing of embodiment and comparative example is also 0.005 ~ 0.01；
Planetary reduction gear relevant parameter：
1, sun gear：Normal module 0.5；The number of teeth 47；20 ° of profile angle；Tip diameter 24.5mm；Reference diameter
23.5mm；
2, centre wheel：Normal module 0.5；The number of teeth 85；20 ° of profile angle；Root diameter 42.5mm, reference diameter
41.5mm,
3, planetary gear：Quantity 3；Tip diameter 10.5mm.
The parameter of electric machine is：Rated speed：≥1500r/min；Rated operational voltage 28VDC；Operating current≤10A.
The planetary reduction gear of embodiment corresponds to 31 DEG C, -55 DEG C and 70 DEG C of electromechanical testing result respectively such as table 1, table 2 and table
Shown in 3；The planetary reduction gear of comparative example corresponds to 31 DEG C, -55 DEG C and 70 DEG C of electromechanical testing result respectively such as table 4, table 5 and table 6
It is shown.
Table 1：
Table 2：
Table 3：
Table 4：
Table 5：
Table 6：
It is above-mentioned the experimental results showed that：The retarder of the utility model can be carried effectively by installing the first self-aligning ball bearing additional
The output power of lifting motor, efficiency.
Claims (9)
1. a kind of planetary reduction gear, including reducer shell, the main body for the planet carrier being set in reducing gearbox body, planetary gear,
The axle journal of sun gear and ring gear, the planet carrier is subtracted with reducer shell with stretching is merged by the first single-groove grooved ball bearing
Fast device shell, the planetary gear are installed on the main body of planet carrier by mandrel, and the planetary gear is equipped with 3 or more and and sun gear
Engagement, the sun gear are surrounded by planetary gear and are used to be fixedly connected with reducer shell with motor axis connection, the ring gear
And it is engaged with each planetary gear, it is characterised in that：The main body of the planet carrier offers bearing hole with sun gear opposite side, described
The first self-aligning ball bearing coordinated with motor shaft is installed in bearing hole.
2. a kind of planetary reduction gear according to claim 1, it is characterised in that：It is set between the planetary gear and the mandrel
There are copper sheathing, the copper sheathing and planetary gear interference fit and the mandrel clearance fit.
3. a kind of planetary reduction gear according to claim 2, it is characterised in that：The copper sheathing includes a pair of of copper sheathing halfbody,
It is L-shaped annular groove that the radial outside of the copper sheathing halfbody, which is equipped with the section of planetary gear inner hole,.
4. a kind of planetary reduction gear according to claim 1, it is characterised in that：The planetary gear it is opposite with planet carrier one
Side is equipped with pressure ring, and the pressure ring is fixedly connected by screw with planet carrier, and the pressure ring is equipped with the positioning coordinated with the mandrel
Hole, the mandrel end are stretched into location hole.
5. a kind of planetary reduction gear according to claim 1, it is characterised in that：The first single-groove grooved ball bearing support
In on the step surface in reducing gearbox body and by first bearing retainer-ring press mounting, the first bearing baffle ring passes through screw and deceleration
Device shell is fixedly connected.
6. the assembling structure of the planetary reduction gear and motor as described in any in claim 1 ~ 5, the motor include motor casing
Body and motor shaft, motor shaft one end adjacent with the retarder are matched by the second single-groove grooved ball bearing with electric machine casing
It closes, the bearing clearance of the second single-groove grooved ball bearing is more than the bearing clearance of the described first single-groove grooved ball bearing.
7. the assembling structure of planetary reduction gear according to claim 6 and motor：The motor shaft and reducer shell phase
Anti- one end is coordinated by the second self-aligning ball bearing and electric machine casing.
8. the assembling structure of planetary reduction gear according to claim 6 and motor：The electric machine casing and the retarder
Shell is fixedly connected by flange arrangement.
9. the assembling structure of planetary reduction gear according to claim 6 and motor：The electric machine casing and reducer shell
The adapter ring coaxial with motor shaft is fixed on an adjacent side end face, reducer shell opening side is socketed on described turn
It connects on ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820477688.6U CN208074140U (en) | 2018-04-05 | 2018-04-05 | A kind of planetary reduction gear and its assembling structure with motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820477688.6U CN208074140U (en) | 2018-04-05 | 2018-04-05 | A kind of planetary reduction gear and its assembling structure with motor |
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| Publication Number | Publication Date |
|---|---|
| CN208074140U true CN208074140U (en) | 2018-11-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201820477688.6U Active CN208074140U (en) | 2018-04-05 | 2018-04-05 | A kind of planetary reduction gear and its assembling structure with motor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108266515A (en) * | 2018-04-05 | 2018-07-10 | 无锡富乐力科技有限公司 | Planetary reduction gear and its assembling structure with motor |
| RU2725376C1 (en) * | 2019-06-07 | 2020-07-02 | федеральное государственное бюджетное образовательное учреждение высшего образования "Ижевский государственный технический университет имени М.Т. Калашникова" | Multisatellite planetary gear |
-
2018
- 2018-04-05 CN CN201820477688.6U patent/CN208074140U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108266515A (en) * | 2018-04-05 | 2018-07-10 | 无锡富乐力科技有限公司 | Planetary reduction gear and its assembling structure with motor |
| CN108266515B (en) * | 2018-04-05 | 2024-02-02 | 无锡富乐力科技有限公司 | Planetary reducer and assembly structure thereof with motor |
| RU2725376C1 (en) * | 2019-06-07 | 2020-07-02 | федеральное государственное бюджетное образовательное учреждение высшего образования "Ижевский государственный технический университет имени М.Т. Калашникова" | Multisatellite planetary gear |
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