CN204459067U - A kind of planetary pinion - Google Patents
A kind of planetary pinion Download PDFInfo
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- CN204459067U CN204459067U CN201520075519.6U CN201520075519U CN204459067U CN 204459067 U CN204459067 U CN 204459067U CN 201520075519 U CN201520075519 U CN 201520075519U CN 204459067 U CN204459067 U CN 204459067U
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- gear
- hole
- planetary pinion
- gear teeth
- pressure angle
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Abstract
The utility model discloses a kind of planetary pinion, include gear, it is characterized in that: be provided with through hole at the middle part of gear, the excircle of gear is distributed with the gear teeth, the pressure angle of the gear teeth is 22 ° 20 '.The utility model is not when changing modulus, by changing the size of pressure angle, the setting of pressure angle is become 22 ° 20 ' from original 20 °, the tooth root of gear thickens, reduce Dedenda's bending stress, improve the flexural strength of gear, prevent break of gear tooth, enough meet the rigors of wheel loader under extreme case, effectively extend the working life of planet wheel.
Description
technical field:
The utility model relates to a kind of gear, relates to a kind of planetary pinion more specifically.
background technique:
Planetary pinion, as an important component part of planetary reducer, is all that three or more mate gear rotates in engagement mostly, thus drives the rotation of miscellaneous part.
In the gear of pair of meshing, pressure angle all can produce the tangential component of radial component and standard pitch circle in the normal direction of gear, wherein radial component does not do work, and is destructive, and the moment of torsion only having the tangential component of standard pitch circle to be only for transmitting does work.
In gear manufacture in the past, modulus on involute gear standard pitch circle is reference value, pressure angle of graduated circle is definite value α=20 °, pressure angle is the planetary pinion of 20 °, be contained on the planetary reducer in wheel loader, often run into comparatively heavy load time occur that gear-tooth strength is inadequate, causes gear teeth bending, even occur broken teeth phenomenon, the working life of planet wheel is short.
model utility content:
In order to solve the problems of the technologies described above, the purpose of this utility model is the planetary pinion providing a kind of high strength, antifatigue, substantially increase planetary gear-tooth strength, solve in the past planetary pinion under the applying working condition of large load, high strength, the difficult problem that can not normally run, and this kind of planetary gear construction is simple, be easy to manufacture, long service life.
Originally realized above-mentioned purpose, the technical solution adopted in the utility model is:
A kind of planetary pinion, include gear, it is characterized in that: be provided with through hole at the middle part of gear, the excircle of gear is distributed with the gear teeth, the pressure angle of the gear teeth is 22 ° 20 '.
Oil inlet hole is provided with between the described gear teeth and through hole.
Oil inlet hole is provided with between the tooth root portion of the described gear teeth and through hole.
The middle part of described through hole is provided with jump-ring slot, and described oil inlet hole is distributed in left side or the right side of jump-ring slot.
Two end faces of described gear are provided with oil storage tank.
Each end face of described gear arranges two oil storage tanks respectively.
Described oil storage tank is semicircular arc.
The internal surface of described through hole is provided with wearing layer.
Described through hole two ends are respectively equipped with chamfering.
The both sides of the described gear teeth are respectively equipped with wearing layer.
The beneficial effects of the utility model are:
1, the utility model is not when changing modulus, by changing the size of pressure angle, the setting of pressure angle is become 22 ° 20 ' from original 20 °, the tooth root of gear thickens, reduce Dedenda's bending stress, improve the flexural strength of gear, prevent break of gear tooth, enough meet the rigors of wheel loader under extreme case, effectively extend the working life of planet wheel.
2, the utility model is by arranging wearing layer in gear teeth both sides and through-hole inner surface, reduce planet wheel premature wear in the course of the work, and between the gear teeth and through hole, be provided with multiple oil inlet hole, the oil storage tank that mate gear body end face is arranged, improve planet wheel and the lubrication of bearing in inner hole surface and end face, improve planetary fatigue resistance, extend the working life of planet wheel, and this kind of planetary gear construction is simple, be easy to manufacture, do not need the accuracy of manufacturing improving planet wheel, so the processing cost of planet wheel also can not be improved.
accompanying drawing illustrates:
Fig. 1 is the structural representation of the utility model embodiment;
Fig. 2 is the front view of the utility model embodiment.
Below in conjunction with the drawings and specific embodiments, the utility model is described further.
embodiment:
As shown in Figure 1, a kind of planetary pinion, includes gear 1, through hole 3 is provided with at the middle part of gear 1, described through hole 3 is communicated with two end faces of gear 1, and the excircle of gear 1 is uniformly distributed the gear teeth 7 of multiple involute shape, and the pressure angle of gear is 22 ° 20 '.Wearing layer is respectively equipped with in the both sides of the gear teeth 7 described.
In the present embodiment, be provided with jump-ring slot 5 at the middle part of through hole 3, be convenient to duplex needle is installed.Between the gear teeth 7 and through hole 3, be provided with multiple oil inlet hole 6, as one more preferably mode of execution, described oil inlet hole is arranged between the tooth root portion of the gear teeth 7 and through hole 3.Described oil inlet hole 6 is distributed in left side or the right side of jump-ring slot 5, and it is inner that lubricant oil enters through hole 3 by oil inlet hole 6, enters in the needle roller of jump-ring slot 5 both sides respectively, play good lubrication to needle bearing.
Be provided with wearing layer at the internal surface of described through hole 3, the wearing and tearing of needle roller and through hole inside can be reduced.
Chamfering 2 is respectively equipped with at described through hole 3 two ends, not only attractive in appearance and be not easy to hurt sb.'s feelings, be collided and be not easy thorn, be convenient to the assembling of planet wheel.
As shown in Figure 2, in the present embodiment, on two end faces of gear 1, be provided with 4 oil storage tanks 4 simultaneously, each end face arranges 2 oil storage tanks 4 respectively, and described oil storage tank 4 is semicircular arc, when planetary gear works, good lubrication can be played, reduce gear face premature wear.The quantity of oil storage tank 4 is not confined to 4, and can increase or reduce the quantity of oil storage tank 4 as required, the shape of oil storage tank 4 is also not limited to semicircular arc, can be triangle, trapezoidal other shapes such as grade.
Pressure angle by planet wheel of the present utility model is set to 22 ° 20 ', relative to the master gear of existing pressure angle 20 °, when the modulus of gear 1, the number of teeth one timing, the increase of pressure angle, the involute shape of gear can be more bending, the gear teeth 7 tooth root of gear 1 thickens, thus can Dedenda's bending stress be reduced, improve the resistance to flexure of gear, prevent breaking off gear teeth, through repeatedly testing the adjustment of pressure angle size and planetary Fatigue test repeatedly, when pressure angle is set to 22 ° 20 ', resistance to flexure improves greatly, enough meet the rigors of wheel loader under extreme case.
The foregoing is only preferred implementation of the present utility model; be to be understood that for those skilled in the art, under the prerequisite not departing from the utility model principle; can also make some improvement and modification, these improve and modify and also should be considered as protection scope of the present invention.
Claims (10)
1. a planetary pinion, includes gear, it is characterized in that: be provided with through hole at the middle part of gear, and the excircle of gear is distributed with the gear teeth, and the pressure angle of the gear teeth is 22 ° 20 '.
2. a kind of planetary pinion according to claim 1, is characterized in that: be provided with oil inlet hole between the described gear teeth and through hole.
3. a kind of planetary pinion according to claim 2, is characterized in that: be provided with oil inlet hole between the tooth root portion of the described gear teeth and through hole.
4. a kind of planetary pinion according to claim 3, is characterized in that: the middle part of described through hole is provided with jump-ring slot, described oil inlet hole is distributed in left side or the right side of jump-ring slot.
5. according to a kind of planetary pinion one of claim 1-4 Suo Shu, it is characterized in that: two end faces of described gear are provided with oil storage tank.
6. a kind of planetary pinion according to claim 5, is characterized in that: each end face of described gear arranges two oil storage tanks respectively.
7. a kind of planetary pinion according to claim 6, is characterized in that: described oil storage tank is semicircular arc.
8. a kind of planetary pinion according to claim 1, is characterized in that: the internal surface of described through hole is provided with wearing layer.
9. a kind of planetary pinion according to claim 1, is characterized in that: described through hole two ends are respectively equipped with chamfering.
10. a kind of planetary pinion according to claim 1, is characterized in that: the both sides of the described gear teeth are respectively equipped with wearing layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520075519.6U CN204459067U (en) | 2015-02-03 | 2015-02-03 | A kind of planetary pinion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520075519.6U CN204459067U (en) | 2015-02-03 | 2015-02-03 | A kind of planetary pinion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204459067U true CN204459067U (en) | 2015-07-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520075519.6U Active CN204459067U (en) | 2015-02-03 | 2015-02-03 | A kind of planetary pinion |
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| Country | Link |
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| CN (1) | CN204459067U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112943893A (en) * | 2021-04-02 | 2021-06-11 | 河南睿辰机器人智能科技有限公司 | Durable drive gear set and speed reducer |
-
2015
- 2015-02-03 CN CN201520075519.6U patent/CN204459067U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112943893A (en) * | 2021-04-02 | 2021-06-11 | 河南睿辰机器人智能科技有限公司 | Durable drive gear set and speed reducer |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |