CN209324999U - A kind of planetary gear support construction - Google Patents
A kind of planetary gear support construction Download PDFInfo
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- CN209324999U CN209324999U CN201821863523.9U CN201821863523U CN209324999U CN 209324999 U CN209324999 U CN 209324999U CN 201821863523 U CN201821863523 U CN 201821863523U CN 209324999 U CN209324999 U CN 209324999U
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- planetary gear
- shaft part
- pin hole
- planet carrier
- shaft
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Abstract
The utility model provides a kind of planetary gear support construction, its structure is simple, constituent part is few, installation cooperation is convenient, bearing intensity is high, improve planetary reduction gear service life, including planet carrier, planetary gear is mounted on planetary gear pin shaft by needle roller, planetary gear pin shaft is corresponded on planet carrier equipped with pin hole, the both ends of planetary gear pin shaft are separately mounted in the pin shaft of planet carrier and pin hole transition fit, it is characterized by: planetary gear pin shaft includes the first shaft part, second shaft part, the diameter of first shaft part is greater than the diameter of the second shaft part, corresponding first shaft part on planet carrier, second shaft part is equipped with the first pin hole, second pin hole, planetary gear is mounted on the second shaft part, the inner ring and the isometrical setting of the second pin hole that needle roller is constituted, planetary gear two sides are respectively arranged with washer for limiting to needle roller, the lower end of washer is set as flush end, The groove matched with flush end is correspondingly provided on planet carrier, the flush end cooperation of groove and washer can prevent washer from rotating.
Description
Technical field
The utility model belongs to technical field of mechanical transmission, and in particular to a kind of planetary gear support construction.
Background technique
Planetary gear is main member in planetary structure.Analysis to the damage of planetary reduction gear timeliness, planetary gear speed-reduction
The direct shadow of situations such as in the common timeliness form of device, planetary gear inner support bearing damage, planetary gear pin shaft loosen, planet carrier abrasion
Planetary gear service life is rung.Therefore have one for the selection of planetary gear inside spring bearing and the design of support construction
Provisioning request.
It is general using Internal and external cycle bearing is had in existing planetary gear structure supported design, such as deep groove ball bearing, aligning axis
It holds, cylinder roller bearing, because there is Internal and external cycle to cause to be limited to planetary gear size in bearing type selecting, big branch cannot be selected
Bearing is supportted, in the enough situations of train intensity, bearing intensity is insufficient.
Planetary gear and planetary gear washer hardness are higher, generally HRC58-62, and planet carrier hardness is comparatively much lower,
Generally in HBS250-300.In actual use, it unavoidably can also rub between planetary gear washer and planet carrier,
Under long term, lead to planet carrier serious wear until damage.
A kind of cage planet carrier inside planet is disclosed in the Chinese utility model patent of Publication No. CN205578701U
Support construction is taken turns, however its structure is complex, constituent part is more, and pin shaft includes three sections, and installation cooperation difficulty is higher, assembly
Inconvenience, bearing intensity is not high, influences planetary reduction gear service life.
Utility model content
In view of the above-mentioned problems, the utility model provides a kind of planetary gear support construction, structure is simple, constitutes zero
Part is few, and installation cooperation is convenient, and bearing intensity is high, improves planetary reduction gear service life.
Its technical solution is such that a kind of planetary gear support construction, including planet carrier, planetary gear pass through needle roller
It is mounted on planetary gear pin shaft, the planetary gear pin shaft is corresponded on the planet carrier equipped with pin hole, the two of the planetary gear pin shaft
End be separately mounted in the pin hole of the planet carrier and with the pin hole transition fit, it is characterised in that: the planetary gear pin shaft
Including the first shaft part, the second shaft part, the diameter of first shaft part is greater than the diameter of the second shaft part, corresponds to institute on the planet carrier
The first shaft part, the second shaft part are stated equipped with the first pin hole, the second pin hole, the planetary gear is mounted on second shaft part, institute
State needle roller composition inner ring and the isometrical setting of the second pin hole, the planetary gear two sides be respectively arranged with washer for pair
Needle roller limit, the lower end of the washer be set as flush end, is correspondingly provided on the planet carrier and matches with the flush end
The flush end cooperation of groove, the groove and the washer can prevent the washer from rotating.
Further, the planetary gear is involute gear.
Further, straight knurling, the straight knurling and institute are along the circumferential direction equipped on the outer wall of first shaft part
State the first pin hole interference fit.
Further, the straight knurling and the magnitude of interference of first pin hole interference fit are 0.05-0.1.
Further, oil-feed tank is offered on the anchor ring of the planetary gear inner hole.
Further, the surface roughness of the planetary gear inner hole is not less than Ra0.8.
The planetary gear support construction of the utility model has the advantage that its structural member quantity is few, high reliablity, row
Intensity height is directly supported by needle roller in star gear, planetary gear pin shaft is as bearing inner race, and planetary gear inner hole is as bearing top circle, section
Save space can select bigger needle roller to use as bearing, and bearing intensity is higher compared with existing double needle roller structure；
Planetary gear pin shaft is made of as Step Shaft the shaft part of two sections of different-diameters, is actually matched compared with the structure of existing three sections of axis
It closes length to greatly reduce, easy to assembly, the second shaft part is as bearing inner race, and easy for installation, the shaft end of the first shaft part uses straight grain
Annular knurl is connect with planet carrier pin hole interference, planetary gear pin shaft good fixing effect, effectively prevents planetary gear pin shaft because of other originals
It is exited because generating rotation；Furthermore the washer with flush end has also been devised and planet carrier groove forms anti-rotation positioning, washer can be prevented
Rotation；Without adding other lubrication facilities, it is provided with oil-feed tank on the anchor ring of planetary gear inner hole, is acted on, is drawn using centrifugal force
Enter lubricating oil and do to needle roller to lubricate, effectively raises the service life of needle roller；The planetary gear of the utility model supports knot
Structure bearing intensity is high, improves planetary reduction gear service life.
Detailed description of the invention
Fig. 1 is the schematic diagram of the planetary gear support construction of the utility model；
Fig. 2 is the structural schematic diagram of the washer of the utility model.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
See that Fig. 1, Fig. 2, a kind of planetary gear support construction of the utility model, including planet carrier 1, planetary gear 2 are logical
It crosses needle roller 3 to be mounted on planetary gear pin shaft 4, in the present embodiment, planetary gear 2 is involute gear, needs to do after processing
Carburizing and quenching processing, the inner hole of planetary gear 2 are used as bearing top circle as needle roller support face, are subjected to big frictional force,
Therefore the inner hole of planetary gear 2 need to guarantee high surface roughness, it is desirable that reach Ra0.8 or more, planetary gear pin is corresponded on planet carrier 1
Axis 4 be equipped with pin hole, the both ends of planetary gear pin shaft 4 be separately mounted in the pin hole of planet carrier 4 and with pin hole transition fit, specifically exist
In the present embodiment, planetary gear pin shaft includes the first shaft part 41, the second shaft part 42, and the diameter of the first shaft part 41 is greater than the second shaft part 42
Diameter, every section of 5~10mm of diameter of axle interval, on planet carrier 1 corresponding first shaft part 41, the second shaft part 42 be equipped with the first pin hole 51,
Second pin hole 52, the wheel of planet tooth 2 are mounted on the second shaft part 52 by needle roller 3, the inner ring of the composition of needle roller 3 and the second pin hole 52 etc.
Diameter setting, the two sides of planetary gear 2 are respectively arranged with washer 6 for limiting to needle roller 3, and the lower end of washer 3 is set as flush end 61,
It is correspondingly provided with the groove 11 matched with flush end 61 on planet carrier 1, the flush end 61 of groove 11 and washer cooperatively forms anti-rotation positioning,
It can prevent washer 6 from rotating, straight knurling 7, straight knurling 7 and the first pin are along the circumferential direction equipped on the outer wall of the first shaft part 41
Hole 51 is interference fitted, magnitude of interference 0.05-0.1, is offered oil-feed tank on the anchor ring of the inner hole of planetary gear 2, is utilized centrifugal force
Effect, introducing lubricating oil is done to needle roller to be lubricated, and can effectively raise the service life of needle roller.
When installation, planetary gear pin shaft is passed through the first pin hole of planet carrier by the second shaft part, is then passed through the planet for being packed into needle roller
The inner hole of wheel is pressed into the second pin hole kind of planet carrier after passing through washer.
Planetary gear support construction its structural member quantity in above-described embodiment is few, high reliablity, in planetary gear
Intensity height is directly supported by needle roller, planetary gear pin shaft saves space as bearing top circle as bearing inner race, planetary gear inner hole,
Bigger needle roller can be selected to use as bearing, bearing intensity is higher compared with existing double needle roller structure；Planetary gear
Pin shaft is made of as Step Shaft the shaft part of two sections of different-diameters, the practical length of fit compared with the structure of existing three sections of axis
Greatly reduce, easy to assembly, the second shaft part is easy for installation as bearing inner race, the shaft end of the first shaft part using straight knurling with
Planet carrier pin hole interference connection, planetary gear pin shaft good fixing effect effectively prevent planetary gear pin shaft because other reasons generate
Rotation is exited；Planetary gear support construction bearing intensity in above-described embodiment is high, improves planetary reduction gear service life.
It is obvious to a person skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and
And without departing substantially from the spirit or essential attributes of the utility model, it can realize that this is practical new in other specific forms
Type.Therefore, in all respects, the present embodiments are to be considered as illustrative and not restrictive, this is practical new
The range of type is indicated by the appended claims rather than the foregoing description, it is intended that containing for the equivalent requirements of the claims will be fallen in
All changes in justice and range are embraced therein.It should not treat any reference in the claims as limiting
Related claim.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (6)
1. a kind of planetary gear support construction, including planet carrier, planetary gear are mounted on planetary gear pin shaft by needle roller, institute
It states and corresponds to the planetary gear pin shaft on planet carrier equipped with pin hole, the both ends of the planetary gear pin shaft are separately mounted to the planet carrier
Pin hole in and with the pin hole transition fit, it is characterised in that: the planetary gear pin shaft include the first shaft part, the second shaft part,
The diameter of first shaft part is greater than the diameter of the second shaft part, corresponds to first shaft part on the planet carrier, the second shaft part is set
Have the first pin hole, the second pin hole, the planetary gear is mounted on second shaft part, the inner ring that the needle roller is constituted with it is described
The isometrical setting of second pin hole, the planetary gear two sides are respectively arranged with washer for needle roller limit, the washer
Lower end be set as flush end, be correspondingly provided with the groove matched with the flush end on the planet carrier, the groove and the pad
The flush end cooperation of circle can prevent the washer from rotating.
2. a kind of planetary gear support construction according to claim 1, it is characterised in that: the planetary gear is gradually to open
Line tooth-profile of gear.
3. a kind of planetary gear support construction according to claim 1, it is characterised in that: the outer wall of first shaft part
On be along the circumferential direction equipped with straight knurling, the straight knurling and first pin hole are interference fitted.
4. a kind of planetary gear support construction according to claim 3, it is characterised in that: the straight knurling with it is described
The magnitude of interference of first pin hole interference fit is 0.05-0.1.
5. a kind of planetary gear support construction according to claim 1, it is characterised in that: the planetary gear inner hole
Anchor ring on offer oil-feed tank.
6. a kind of planetary gear support construction according to claim 1, it is characterised in that: the planetary gear inner hole
Surface roughness be not less than Ra0.8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821863523.9U CN209324999U (en) | 2018-11-13 | 2018-11-13 | A kind of planetary gear support construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821863523.9U CN209324999U (en) | 2018-11-13 | 2018-11-13 | A kind of planetary gear support construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209324999U true CN209324999U (en) | 2019-08-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821863523.9U Active CN209324999U (en) | 2018-11-13 | 2018-11-13 | A kind of planetary gear support construction |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112728059A (en) * | 2021-01-20 | 2021-04-30 | 索特传动设备有限公司 | Planet shaft, planet speed reducer and engineering machinery |
| CN115654082A (en) * | 2022-12-28 | 2023-01-31 | 苏州亚太精睿传动科技股份有限公司 | Double-arm planetary assembly and yaw gearbox |
-
2018
- 2018-11-13 CN CN201821863523.9U patent/CN209324999U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112728059A (en) * | 2021-01-20 | 2021-04-30 | 索特传动设备有限公司 | Planet shaft, planet speed reducer and engineering machinery |
| CN115654082A (en) * | 2022-12-28 | 2023-01-31 | 苏州亚太精睿传动科技股份有限公司 | Double-arm planetary assembly and yaw gearbox |
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