CN203230836U - Frame structure of planet speed-reducing mechanism - Google Patents
Frame structure of planet speed-reducing mechanism Download PDFInfo
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- CN203230836U CN203230836U CN 201320231515 CN201320231515U CN203230836U CN 203230836 U CN203230836 U CN 203230836U CN 201320231515 CN201320231515 CN 201320231515 CN 201320231515 U CN201320231515 U CN 201320231515U CN 203230836 U CN203230836 U CN 203230836U
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- bearing pin
- frame structure
- hole
- reducing mechanism
- pin
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Abstract
The utility model discloses a frame structure of a planet speed-reducing mechanism, and belongs to the technical field of speed-reducing mechanisms. The frame structure comprises a planet frame and a pin. A through hole is formed in the planet frame. The pin is penetratingly fixed in the through hole. Knurls are processed on one face between the outer circle of the pin and the inner circle of the through hole. The knurls increase friction force between the pin and the through hole, effectively prevent the pin from loosening and are convenient to process; compared with keyway processing, knurl processing has the advantages that the knurls do not need accurate dimension positioning, so that cost is greatly reduced.
Description
Technical field
The utility model relates to a kind of reducing gear, relates in particular to a kind of frame structure of planetary gear speed reducing mechanism.
Background technique
Characteristics such as planetary speed reducer is in light weight, volume is little, gear range is big, efficient is high, running is steady, the low adaptability of noise is strong.Speed reducer is widely used in industrial departments such as metallurgy, mine, lifting transportation, electric power, the energy, building materials, light industry, traffic.
Referring to Fig. 1, the frame structure of planetary gear speed reducing mechanism comprises planet carrier 1 and planetary pinion 2, and described planet carrier 1 is provided with through hole 11, in the described through hole 11 bearing pin 3 is arranged fixedly, and described planetary pinion 2 is rotatably connected on the bearing pin 3.All be provided with pad 21,22 on two end faces of planetary pinion 2.In order to prevent that planetary pinion 2 from skidding off from bearing pin 3, the end of described bearing pin 3 is provided with draw-in groove 31, is provided with a back-up ring 32 in the described draw-in groove 31.
Referring to Fig. 2, the methods that originally bearing pin 3 are fixed in the through hole 11 are: utilize the interference fit between bearing pin 3 and the through hole 11, use the end time, bearing pin 3 occurs loosening easily, makes transmission failure.Therefore be necessary to improve.A scheme that is easy to expect is, utilizes key and groove to cooperate bearing pin 3 is connected in the through hole 11, and bearing pin can not relatively rotate with planet carrier, just is not easy to occur the situation of getting loose yet.But adopt this structure, need on planet carrier and bearing pin, all process keyway, increase cost greatly.
Summary of the invention
The utility model provides a kind of frame structure of planetary gear speed reducing mechanism at deficiency of the prior art, and bearing pin can not get loose after installing.
For solving the problems of the technologies described above, the utility model is solved by following technical proposals: a kind of frame structure of planetary gear speed reducing mechanism, comprise planet carrier and bearing pin, described planet carrier is provided with through hole, described bearing pin inserts and is fixed in the described through hole, has between the outer ring of described bearing pin and the inner ring of described through hole on the one side to be processed with annular knurl.Annular knurl has strengthened the frictional force between bearing pin and the through hole, prevents that effectively bearing pin is loosening, and annular knurl processing simultaneously is more convenient, and than keyway processing, annular knurl does not need the accurate dimensions location, and cost reduces greatly.
In the technique scheme, preferred, the outer ring of described bearing pin is processed with annular knurl.The processing annular knurl is more convenient on the bearing pin.
In the technique scheme, preferably, also comprise planetary pinion, described planetary pinion is rotatably connected on the bearing pin, all is provided with pad on planetary two end faces, and the end of described bearing pin is provided with draw-in groove, be provided with a back-up ring in the described draw-in groove, also comprise a dividing plate, all described bearing pins pass described dividing plate, and described dividing plate is between described back-up ring and described pad.Because all latches all pass dividing plate, when single planetary pinion rotates, can not drive dividing plate and relatively rotate together, so dividing plate can not relatively rotate with back-up ring, avoid back-up ring to wear and tear.
In the technique scheme, preferred, be provided with bearing between described planetary pinion and the described bearing pin.Frictional force when bearing can reduce the planetary pinion rotation is increased work efficiency.
In the technique scheme, preferred, the neutral position of described planet carrier is provided with internal gear.Internal gear matches with output shaft, with the power output of retarder.
The beneficial effects of the utility model are: annular knurl has strengthened the frictional force between bearing pin and the through hole, prevents that effectively bearing pin is loosening, and annular knurl processing simultaneously is more convenient, and than keyway processing, annular knurl does not need the accurate dimensions location, and cost reduces greatly.
Description of drawings
Fig. 1 is the schematic representation of the frame structure of existing planetary gear speed reducing mechanism.
Fig. 2 is the utility model embodiment's schematic representation.
Fig. 3 is the local enlarged diagram of Fig. 2.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail: referring to Fig. 2 and Fig. 3, the frame structure of planetary gear speed reducing mechanism comprises planet carrier 1, planetary pinion 2 and dividing plate 4.Be processed with a plurality of through holes 11 on the end face of planet carrier 1, these through holes 11 circumferentially evenly distribute along the end face of planet carrier 1.In each through hole 11 bearing pin 3 is arranged fixedly, the outer ring of described bearing pin 3 is processed with annular knurl 3a.Annular knurl has strengthened the frictional force between bearing pin and the through hole, prevents that effectively bearing pin is loosening, and annular knurl processing simultaneously is more convenient, and than keyway processing, annular knurl does not need the accurate dimensions location, and cost reduces greatly.The neutral position of planet carrier 1 is provided with internal gear 12.
All be provided with pad 21,22 on two end faces of planetary pinion 2, the end of bearing pin 3 is provided with draw-in groove 31, is provided with a back-up ring 32 in the draw-in groove 31.All bearing pins 3 pass dividing plate 4, and dividing plate 4 is between back-up ring 32 and pad 21.
During use, central gear drives planetary pinion 2 and rotates, and planetary pinion 2 drives pad 21,22 and rotates when rotating.When pad 21 rotated, the bottom of friction spacer 4 was a plurality ofly located by bearing pin 3 but have on the dividing plate 4, and dividing plate 4 can't just can not relatively rotate with back-up ring 32 with pad 21 rotations yet.So dividing plate can completely cut off the friction between pad 21 and the back-up ring 32, avoid taking place back-up ring and damage because of wearing and tearing.
Claims (5)
1. the frame structure of a planetary gear speed reducing mechanism, comprise planet carrier (1) and bearing pin (3), described planet carrier (1) is provided with through hole (11), described bearing pin (3) inserts and is fixed in the described through hole (11), it is characterized in that: have between the inner ring of the outer ring of described bearing pin (3) and described through hole (11) on the one side to be processed with annular knurl (3a).
2. the frame structure of planetary gear speed reducing mechanism according to claim 1, it is characterized in that: the outer ring of described bearing pin (3) is processed with annular knurl (3a).
3. the frame structure of planetary gear speed reducing mechanism according to claim 1, it is characterized in that: also comprise planetary pinion (2), described planetary pinion (2) is rotatably connected on the bearing pin (3), all be provided with pad (21 on two end faces of planetary pinion (2), 22), the end of described bearing pin (3) is provided with draw-in groove (31), be provided with a back-up ring (32) in the described draw-in groove (31), also comprise a dividing plate (4), all described bearing pins (3) pass described dividing plate (4), and described dividing plate (4) is positioned between described back-up ring (32) and the described pad (21).
4. the frame structure of planetary gear speed reducing mechanism according to claim 3 is characterized in that: be provided with bearing (4) between described planetary pinion (2) and the described bearing pin (3).
5. the frame structure of planetary gear speed reducing mechanism according to claim 3, it is characterized in that: the neutral position of described planet carrier (1) is provided with internal gear (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320231515 CN203230836U (en) | 2013-05-02 | 2013-05-02 | Frame structure of planet speed-reducing mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320231515 CN203230836U (en) | 2013-05-02 | 2013-05-02 | Frame structure of planet speed-reducing mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203230836U true CN203230836U (en) | 2013-10-09 |
Family
ID=49286963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320231515 Expired - Fee Related CN203230836U (en) | 2013-05-02 | 2013-05-02 | Frame structure of planet speed-reducing mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203230836U (en) |
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2013
- 2013-05-02 CN CN 201320231515 patent/CN203230836U/en not_active Expired - Fee Related
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131009 Termination date: 20200502 |