CN211059342U - Take planetary gear bearing lubricating structure's gear box - Google Patents
Take planetary gear bearing lubricating structure's gear box Download PDFInfo
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- CN211059342U CN211059342U CN201922035619.7U CN201922035619U CN211059342U CN 211059342 U CN211059342 U CN 211059342U CN 201922035619 U CN201922035619 U CN 201922035619U CN 211059342 U CN211059342 U CN 211059342U
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- planet wheel
- oil groove
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- wheel
- oil
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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Abstract
The utility model discloses a take planetary wheel bearing lubricating structure's gear box belongs to gear box technical field. Take planetary wheel bearing lubricating structure's gear box includes planet carrier, round pin axle, bearing and planet wheel, still includes: the first oil groove is formed in the middle of the inner wall of the planet wheel and extends along the circumferential direction of the planet wheel; the oil hole is formed in the planet wheel and extends along the radial direction of the planet wheel, one end of the oil hole is communicated with the oil groove, and the other end of the oil hole is located at the tooth root of the outer teeth of the planet wheel and penetrates through the outer side and the inner wall of the planet wheel; and the second oil groove is formed in the end face of the planet wheel, one end of the second oil groove is communicated with the inner wall of the planet wheel, and the other end of the second oil groove is close to the root circle of the planet wheel but does not intersect with the root circle. The utility model discloses set up first oil groove and oilhole at the middle part of planet wheel, set up the second oil groove at the tip of planet wheel, can lubricate the bearing in the planet wheel hole, guarantee the normal operating of gear box.
Description
Technical Field
The utility model relates to a gear box technical field especially relates to a take planetary wheel bearing lubricating structure's gear box.
Background
Yaw and pitch gearboxes are one of the important components of wind power generators. Because the operating mode is abominable, the maintenance is inconvenient, and the installation space is narrow and small in addition, driftage and change oar gear box all have strict requirements to reliability, weight, overall dimension. In the prior art, each planet-level gear and each bearing of the yawing and variable pitch gear box are lubricated by oil immersion usually, but the bearings are installed in inner holes of planet gears, the installation space is relatively closed and small, sufficient lubrication is difficult to obtain, and the existing gear box structure is difficult to effectively lubricate the bearings of the planet gears.
Accordingly, the prior art is yet to be improved and developed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a take planet wheel bearing lubricating structure's gear box to solve among the prior art driftage and become the bearing of planet wheel in the pitch gear box can not obtain fine lubricated problem.
To achieve the purpose, the utility model adopts the following technical proposal:
the utility model provides a take planetary wheel bearing lubricating structure's gear box, includes planet carrier, round pin axle, bearing and planet wheel, still includes:
the first oil groove is formed in the middle of the inner wall of the planet wheel and extends along the circumferential direction of the planet wheel;
the oil hole is formed in the planet wheel and extends in the radial direction of the planet wheel, one end of the oil hole is communicated with the first oil groove, and the other end of the oil hole is located at the tooth root of the outer teeth of the planet wheel and penetrates through the outer side and the inner wall of the planet wheel;
and the second oil groove is formed in the end face of the planet wheel, one end of the second oil groove is communicated with the inner wall of the planet wheel, and the other end of the second oil groove is close to the root circle of the planet wheel but does not intersect with the root circle.
Optionally, the first oil groove is annular.
Optionally, the second oil groove is spiral.
Optionally, the bearing is a needle bearing.
Optionally, the number of the needle roller bearings is two, the needle roller bearings are arranged side by side, a gap is arranged between the two needle roller bearings, and the first oil groove is located in the gap.
Optionally, a first washer is arranged between the two needle bearings.
Optionally, the outer diameter of the first washer is smaller than the inner diameter of the planet wheel.
Optionally, the planet carrier includes two webs arranged oppositely, and the planet wheel is arranged between the two webs.
Optionally, a second washer is arranged between the end of the planet wheel and the web.
Optionally, both ends of the planet wheel are provided with the second oil grooves.
The utility model has the advantages that:
the utility model discloses set up first oil groove and oilhole at the middle part of planet wheel, make lubricating oil flow to the first oil groove through the oilhole from the outside of planet wheel, lubricate the bearing in the planet wheel hole, and the tip of planet wheel has also set up the second oil groove, can make lubricating oil flow to the inner wall of planet wheel from the second oil groove, advance the lubrication to the bearing;
the oilhole is not direct crossing with the inner wall of planet wheel, but sets up first oil groove at the inner wall of planet wheel, makes oilhole and first oil groove intercommunication, can avoid the oilhole direct stress concentration that leads to the fact with the inner wall of planet wheel is crossing like this to reduced the processing degree of difficulty, first oil groove can increase the area of contact of lubricating oil and bearing simultaneously.
Drawings
FIG. 1 is a schematic diagram of a gear box embodiment with a planetary bearing lubrication arrangement according to the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1 according to the present invention;
fig. 3 is a schematic structural view of the end of the planetary gear of the present invention.
In the figure:
10-a planet carrier; 20-a pin shaft; 30-a bearing; 40-a planet wheel; 50-a first gasket; 60-a second gasket;
41-a first oil groove; 42-oil hole; 43-second oil groove.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.
The utility model provides a take planetary wheel bearing lubricating structure's gear box, as shown in FIG. 1, the gear box includes planet carrier 10, round pin axle 20, bearing 30 and planet wheel 40, and planet wheel 40 installs on planet carrier 10 through round pin axle 20, and bearing 30 sets up between round pin axle 20 and planet wheel 40, makes planet wheel 40 can rotate on round pin axle 20.
Referring to fig. 1 and 2, a first oil groove 41 is formed in the middle of the inner wall of the planet wheel 40, and the first oil groove 41 extends along the circumferential direction of the planet wheel 40, so that the first oil groove 41 is fully contacted with the bearing 30, and the lubrication effect is improved.
The planet wheel 40 is further provided with an oil hole 42, the oil hole 42 extends along the radial direction of the planet wheel 40, one end of the oil hole 42 is communicated with the first oil groove 41, and the other end of the oil hole is positioned at the tooth root of the external teeth of the planet wheel 40 and penetrates through the outer side and the inner wall of the planet wheel 40. When the planet wheel 40 works, the external tooth surface of the planet wheel 40 is meshed with the sun wheel, and under the action of extrusion force generated by meshing of the planet wheel 40 and the sun wheel, lubricating oil is conveyed to the inner hole of the planet wheel 40 through the oil hole 42 at the tooth root of the planet wheel 40 and rapidly lubricates and cools the bearing 30 through the first oil groove 41 of the inner hole of the planet wheel 40.
In one embodiment, the number of the oil holes 42 is four, and the four oil holes 42 are uniformly distributed along the circumferential direction of the planet wheel 40, so that one oil hole 42 is always in contact with the lubricating oil when the planet wheel 40 operates.
Fig. 3 is the structure schematic diagram of the tip of the utility model discloses planet wheel, as shown in fig. 3, planet wheel 40's terminal surface is provided with second oil groove 43, second oil groove 43 one end and planet wheel 40's inner wall intercommunication, but the other end is close to the root circle of planet wheel 40 non-intersect, because the planet stage gear of gear box adopts the immersion oil lubrication, the periphery of planet wheel 40 terminal surface can contact lubricating oil, lubricating oil just so can flow to planet wheel 40's inner wall through second oil groove 43, lubricate bearing 30. The second oil groove 43 does not intersect with the root circle of the planet gear 40, so that the rigidity of the outer teeth of the planet gear 40 is prevented from being damaged, and the strength of the outer teeth is not reduced.
The utility model discloses set up the cooperation structure of oilhole 42 and first oil groove 41, made lubricating oil from the intermediate part bit stream income planet wheel 40 bearing 30 of hole of planet wheel 40 inner wall to at the terminal surface of planet wheel 40, set up second oil groove 43, make lubricating oil flow to the inner wall of planet wheel 40 from the terminal surface of planet wheel 40, lubricate the bearing 30 in the hole of planet wheel 40, make bearing 30 lubricated good. And the setting of first oil groove 41 can avoid the oilhole 42 directly to intersect with the inner wall of planet wheel 40, avoids stress concentration, can also reduce the processing degree of difficulty, and the unusual wearing and tearing of cutter when reducing later stage processing planet wheel 40 hole increase and bearing 30's area of contact promotes lubricated effect.
As shown in fig. 1, the first oil groove 41 is preferably annular, so that the contact area of the first oil groove 41 and the bearing 30 can be maximized, and the lubrication effect is the best. Of course, the first oil groove 41 may not be annular, and may be, for example, a section of oil groove on the inner wall of the planet wheel 40, or several sections of oil grooves arranged at intervals, which is not limited herein.
Further, as shown in fig. 3, the second oil groove 43 is spiral, preferably, an archimedean spiral, and the spiral second oil groove 43 can make the length of the second oil groove 43 longer, so as to increase the fluidity of the lubricating oil, and facilitate the renewal and cooling of the lubricating oil at the bearing.
In one embodiment, as shown in FIG. 1, the bearings 30 are needle bearings. The needle bearing has strong bearing capacity and small installation space, and is suitable for meeting the requirements of a yawing gearbox and a variable pitch gearbox on the external dimension. But bearing radial dimension is little, axial dimension length is big, installs in relative relatively confined space, is difficult to obtain abundant lubrication, the utility model discloses an oil circuit design, can be fine lubricate bearing.
Further, as shown in fig. 1, two needle roller bearings are arranged side by side, and a gap is provided between the two needle roller bearings, and the first oil groove 41 is located at the gap.
In addition, as shown in fig. 1 and 2, a first washer 50 can be arranged between the two needle bearings, the first washer 50 can prevent the two rows of needle rollers from contacting and shifting, and the position of the needle rollers in the inner hole of the planetary gear 40 is adjusted during installation, so that burrs at the bottom of the oil hole 42 are prevented from scratching the surface of the needle rollers.
Preferably, as shown in fig. 2, the outer diameter of the first washer 50 is smaller than the inner diameter of the planet wheel 40, and since the first washer 50 is located at the first oil groove 41, if the outer diameter of the first washer 50 is larger, the first washer may block the first oil groove 41, which may affect the lubricating effect, the outer diameter of the first washer 50 is preferably smaller than the inner diameter of the planet wheel 40, so that the outer ring of the first washer 50 is slightly lower than the inner wall of the planet wheel 40, and the normal flow of the lubricating oil is ensured.
As shown in fig. 1, the planet carrier 10 includes two webs arranged oppositely, the planet wheel 40 is arranged between the two webs, two ends of the pin shaft 20 are respectively installed on the two webs, and the two webs can improve the supporting strength and stability.
Further, a second washer 60 is provided between the end of the planet 40 and the web to axially locate and fix the planet 40. The utility model discloses set up second oil groove 43 into Archimedes spiral form, can guarantee the area of contact of planet wheel 40 terminal surface and second packing ring 60.
Further, the two ends of the planet wheel 40 are provided with second oil grooves 43, so that the bearings 30 at the two ends are lubricated, and the lubricating effect is improved.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, rearrangements and substitutions will now occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. The utility model provides a take planetary wheel bearing lubricating structure's gear box, includes planet carrier (10), round pin axle (20), bearing (30) and planet wheel (40), its characterized in that still includes:
the first oil groove (41) is arranged in the middle of the inner wall of the planet wheel (40) and extends along the circumferential direction of the planet wheel (40);
the oil hole (42) is formed in the planet wheel (40) and extends in the radial direction of the planet wheel (40), one end of the oil hole (42) is communicated with the first oil groove (41), and the other end of the oil hole is located at the tooth root of the external teeth of the planet wheel (40) and penetrates through the outer side and the inner wall of the planet wheel (40);
and the second oil groove (43) is arranged on the end surface of the planet wheel (40), one end of the second oil groove is communicated with the inner wall of the planet wheel (40), and the other end of the second oil groove is close to the root circle of the planet wheel (40) but does not intersect.
2. A gearbox with planetary wheel bearing lubrication structure according to claim 1, characterized in that said first oil groove (41) is ring-shaped.
3. A gearbox with planetary wheel bearing lubrication structure according to claim 1, characterized in that said second oil groove (43) is helical.
4. Gearbox with planetary wheel bearing lubrication according to claim 1, characterized in that said bearing (30) is a needle bearing.
5. A gearbox with planetary wheel bearing lubrication structure according to claim 4, where said needle bearings are two and arranged side by side, and a gap is provided between said two needle bearings, and said first oil groove (41) is located at this gap.
6. A gearbox with planetary wheel bearing lubrication according to claim 5, characterized in that a first washer (50) is arranged between two said needle bearings.
7. A gearbox with a planetary wheel bearing lubrication structure according to claim 6, characterised in that the outer diameter of the first washer (50) is smaller than the inner diameter of the planetary wheels (40).
8. A gearbox with a planetary wheel bearing lubrication structure according to claim 1, characterised in that said planet carrier (10) comprises two webs arranged opposite each other, said planet wheels (40) being arranged between two of said webs.
9. A gearbox with a planetary wheel bearing lubrication arrangement according to claim 8, characterised in that a second washer (60) is arranged between the end of the planetary wheel (40) and the web.
10. A gearbox with a planetary wheel bearing lubrication structure according to claim 8, characterised in that both ends of the planetary wheels (40) are provided with the second oil groove (43).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922035619.7U CN211059342U (en) | 2019-11-22 | 2019-11-22 | Take planetary gear bearing lubricating structure's gear box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922035619.7U CN211059342U (en) | 2019-11-22 | 2019-11-22 | Take planetary gear bearing lubricating structure's gear box |
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| Publication Number | Publication Date |
|---|---|
| CN211059342U true CN211059342U (en) | 2020-07-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922035619.7U Active CN211059342U (en) | 2019-11-22 | 2019-11-22 | Take planetary gear bearing lubricating structure's gear box |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113266670A (en) * | 2021-06-24 | 2021-08-17 | 宝鸡法士特齿轮有限责任公司 | Lubricating structure of gear |
| CN114263719A (en) * | 2021-11-19 | 2022-04-01 | 东风汽车零部件(集团)有限公司刃量具分公司 | Transfer case differential mechanism of straight-tooth planetary gear needle roller assembly |
| CN117090925A (en) * | 2023-10-16 | 2023-11-21 | 爱磁科技(天津)有限公司 | Planetary transmission device and precise speed reducer thereof |
| WO2023236446A1 (en) * | 2022-06-07 | 2023-12-14 | 南高齿(淮安)高速齿轮制造有限公司 | Transmission mechanism |
-
2019
- 2019-11-22 CN CN201922035619.7U patent/CN211059342U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113266670A (en) * | 2021-06-24 | 2021-08-17 | 宝鸡法士特齿轮有限责任公司 | Lubricating structure of gear |
| CN113266670B (en) * | 2021-06-24 | 2023-06-02 | 宝鸡法士特齿轮有限责任公司 | Gear lubrication structure |
| CN114263719A (en) * | 2021-11-19 | 2022-04-01 | 东风汽车零部件(集团)有限公司刃量具分公司 | Transfer case differential mechanism of straight-tooth planetary gear needle roller assembly |
| WO2023236446A1 (en) * | 2022-06-07 | 2023-12-14 | 南高齿(淮安)高速齿轮制造有限公司 | Transmission mechanism |
| CN117090925A (en) * | 2023-10-16 | 2023-11-21 | 爱磁科技(天津)有限公司 | Planetary transmission device and precise speed reducer thereof |
| CN117090925B (en) * | 2023-10-16 | 2023-12-29 | 爱磁科技(天津)有限公司 | Planetary transmission device and precise speed reducer thereof |
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