CN204512372U - For the uni-drive gear box of aeroengine - Google Patents
For the uni-drive gear box of aeroengine Download PDFInfo
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- CN204512372U CN204512372U CN201520009359.5U CN201520009359U CN204512372U CN 204512372 U CN204512372 U CN 204512372U CN 201520009359 U CN201520009359 U CN 201520009359U CN 204512372 U CN204512372 U CN 204512372U
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- bearing
- connection chamber
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- gear box
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Abstract
The utility model discloses a kind of uni-drive gear box for aeroengine, uni-drive gear box offers connection chamber, is provided with gear shaft and bearing in connection chamber.Gear shaft one end is connected on bearing, and the other end is in order to connection for transmission gear.The outer ring of bearing and the inwall interference fit of connection chamber, the inwall of connection chamber, being equipped with at least one seal groove with cooperation place, outer ring, is provided with the seal ring coordinated with it in seal groove.The above-mentioned uni-drive gear box for aeroengine is provided with connection chamber, in connection chamber, the outer ring of bearing and the inwall interference fit of connection chamber, the inwall of connection chamber is being provided with seal ring with cooperation place, outer ring, the inner side of seal ring contacts with outer ring and seal ring has certain elasticity, the inner side of seal ring can fit tightly with outer ring, increase the tightness between connection chamber inwall and bearing outer ring, bearing outer ring is made to be not easy to occur circumferential vibration, avoiding bearing through repeatedly installing and removing simultaneously, the problem that the tightness between connection chamber inwall and bearing outer ring declines.Above-mentioned structure of transmission gear box is simply compact, and bearing is not easy the problem occurring circumferential vibration, good stability.
Description
Technical field
The utility model relates to uni-drive gear box field, especially, relates to a kind of uni-drive gear box for aeroengine.
Background technique
Uni-drive gear box is the critical component of aeroengine.Uni-drive gear box offers connection chamber, is provided with gear shaft, bearing and driving gear in connection chamber, and bearing is arranged on and gear shaft is used for the other end connection for transmission gear of support teeth wheel shaft, gear shaft.Transmission gear speeds is very high, and through more than the 10000r/min that is everlasting, the bearings D N value be arranged on gear shaft is higher, requires that inner ring rotates with gear shaft, and outer ring is fixed on gear-box motionless.Prior art is the stressed joint being realized outer ring and gear-box by the interference fit of bearing outer ring and gear-box, easily occurs circumferential vibration problem after bearing is subject to impulsive load or being dismounted for multiple times.
Model utility content
The utility model provides a kind of uni-drive gear box for aeroengine, to solve the technical problem that circumferential vibration easily appears in general driving gear axle box bearing.
The technical solution adopted in the utility model is as follows:
For a uni-drive gear box for aeroengine, uni-drive gear box offers connection chamber, is provided with gear shaft and bearing in connection chamber.
Gear shaft one end is connected on bearing, and the other end is in order to connection for transmission gear.
The outer ring of bearing and the inwall interference fit of connection chamber, the inwall of connection chamber, being equipped with at least one seal groove with cooperation place, outer ring, is provided with the seal ring coordinated with it in seal groove.
Further, seal ring is O RunddichtringO, and the width bottom seal groove is greater than the width of opening.
Further, the width of seal groove reduces from bottom gradually to opening.
Further, the compressibility of seal ring is 20 ~ 35%.
Further, the magnitude of interference of outer ring and inwall is 0.002 ~ 0.025mm.
Further, the quantity of seal groove is two.
Further, in seal ring, be provided with circular groove, in circular groove, be filled with gas.
Further, bearing is inner ringless roller bearing, and outer ring, roller and gear shaft form inner ringless roller bearing.
Further, inwall one end of connection chamber is provided with projection, and the other end is embedded with back-up ring, and bearing is located between projection and back-up ring.
The utility model has following beneficial effect: the above-mentioned uni-drive gear box for aeroengine offers connection chamber, in connection chamber, the outer ring of bearing and the inwall interference fit of connection chamber, the inwall of connection chamber is being provided with seal ring with cooperation place, outer ring, the inner side of seal ring contacts with outer ring and seal ring has certain elasticity, the inner side of seal ring can fit tightly with outer ring, increase the tightness between connection chamber inwall and outer ring, bearing outer ring is made to be not easy to occur circumferential vibration, avoid bearing through repeatedly installing and removing simultaneously, the problem that tightness between connection chamber inwall and bearing outer ring declines.Above-mentioned structure of transmission gear box is simply compact, and bearing is not easy the problem occurring circumferential vibration, good stability.
Except object described above, feature and advantage, the utility model also has other object, feature and advantage.Below with reference to figure, the utility model is described in further detail.
Accompanying drawing explanation
The accompanying drawing forming a application's part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the structure of transmission gear box schematic diagram of the utility model preferred embodiment.
Description of reference numerals: 100, connection chamber; 110, gear shaft; 120, bearing; 121, outer ring; 130, seal groove; 140, seal ring; 150, projection; 160, back-up ring.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail, but the multitude of different ways that the utility model can be defined by the claims and cover is implemented.
With reference to Fig. 1, preferred embodiment of the present utility model provides a kind of uni-drive gear box for aeroengine, and uni-drive gear box offers connection chamber 100, is provided with gear shaft 110 and bearing 120 in connection chamber 100.Gear shaft 110 one end is connected on bearing 120, and the other end is in order to connection for transmission gear.The outer ring 121 of bearing 120 and the inwall interference fit of connection chamber 100, the inwall of connection chamber 100, being equipped with at least one seal groove 130 with cooperation place, outer ring 121, is provided with the seal ring 140 coordinated with it in seal groove 130.
The outer ring 121 of bearing 120 and the inwall interference fit of connection chamber 100, make the outer ring 121 of bearing 120 and the inwall stressed joint of connection chamber 100, contact with outer ring 121 inside the seal ring 140 of seal groove 130, seal ring 140 has certain elasticity, the inner side of seal ring 140 can fit tightly with outer ring 121, further increases the tightness between connection chamber 100 inwall and outer ring 121.
The above-mentioned uni-drive gear box for aeroengine offers connection chamber 100, in connection chamber 100, the outer ring 121 of bearing 120 and the inwall interference fit of connection chamber 100, the inwall of connection chamber 100 is being provided with seal ring 140 with cooperation place, outer ring 121, the inner side of seal ring 140 contacts with outer ring 121 and seal ring 140 has certain elasticity, the inner side of seal ring 140 can fit tightly with outer ring 121, increase the tightness between connection chamber 100 inwall and outer ring 121, outer ring 121 is made to be not easy to occur circumferential vibration, avoid bearing 120 through repeatedly installing and removing simultaneously, the problem that tightness between the outer ring 121 of connection chamber 100 inwall and bearing 120 declines.Seal ring 140 has certain elasticity simultaneously, easily produces deformation, can not affect and bring larger resistance during dismounting bearing 120, for convenience detach.Above-mentioned structure of transmission gear box is simply compact, and bearing 120 is not easy the problem occurring circumferential vibration, good stability.
Alternatively, seal ring 140 is O RunddichtringO, and the width bottom seal groove 130 is greater than the width of seal groove 130 opening.O RunddichtringO structure is simple, inside it can with outer ring 121 close contact, increase the tightness of outer ring 121 and connection chamber 100 inwall.The width of seal groove 130 opening is less simultaneously, seal ring 140 can be fixed in seal groove 130 preferably, be not easy to deviate from seal groove 130.
Preferably, the width of seal groove 130 reduces from bottom gradually to opening, and the inwall of seal groove 130 and the area of contact of seal ring 140 are comparatively large, better to the fixed effect of seal ring 140.
Alternatively, the compressibility of seal ring 140 is 20 ~ 35%.Under this compressibility, seal ring 140 and outer ring 121 are fitted more tight.
Alternatively, outer ring 121 is 0.002 ~ 0.025mm with the magnitude of interference of inwall, and outer ring 121 is combined more tight with inwall, is unlikely to cause dismounting inconvenience simultaneously.
Alternatively, the quantity of seal groove 130 is two, further increase the tightness of outer ring 121 and connection chamber 100 inwall, and outer ring 121 is stressed more even, better avoids bearing 120 to occur the problem of circumferential vibration.
Alternatively, be provided with circular groove in seal ring 140, in circular groove, be filled with gas.Produce heat when bearing 120 operates, when gases are heated, they expand in circular groove, bearing 120 swollen fit with outer ring 121 more tight, increase the tightness of outer ring 121 and connection chamber 100 inwall.
Alternatively, with reference to Fig. 1, bearing 120 is inner ringless roller bearing, and outer ring 121, roller and gear shaft 110 form inner ringless roller bearing.Gear shaft 110 act as the role of bearing 120 inner ring simultaneously, i.e. the inner ring of bearing 120 and gear shaft 110 integrated design.
Alternatively, with reference to Fig. 1, inwall one end of connection chamber 100 is provided with projection 150, and the other end is embedded with back-up ring 160, and bearing 120 is located between projection 150 and back-up ring 160.Projection 150 and bearing 120 one end offset, and the inwall of connection chamber 100 is embedded with back-up ring 160, and end face and bearing 120 the other end of back-up ring 160 offset, and avoid bearing 120 to move vertically.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (9)
1. for a uni-drive gear box for aeroengine, described uni-drive gear box offers connection chamber (100), it is characterized in that, is provided with gear shaft (110) and bearing (120) in described connection chamber (100);
Described gear shaft (110) one end is connected on described bearing (120), and the other end is in order to connection for transmission gear;
The outer ring (121) of described bearing (120) and the inwall interference fit of described connection chamber (100), the inwall of described connection chamber (100) is being equipped with at least one seal groove (130) with described outer ring (121) cooperation place, is provided with the seal ring (140) coordinated with it in described seal groove (130).
2. uni-drive gear box according to claim 1, is characterized in that, described seal ring (140) is O RunddichtringO, and the width of described seal groove (130) bottom is greater than the width of opening.
3. uni-drive gear box according to claim 2, is characterized in that, the width of described seal groove (130) reduces from bottom gradually to opening.
4. uni-drive gear box according to claim 1, is characterized in that, the compressibility of described seal ring (140) is 20 ~ 35%.
5. uni-drive gear box according to claim 1, is characterized in that, described outer ring (121) are 0.002 ~ 0.025mm with the magnitude of interference of described inwall.
6. uni-drive gear box according to claim 1, is characterized in that, the quantity of described seal groove (130) is two.
7. uni-drive gear box according to claim 1, is characterized in that, described seal ring is provided with circular groove in (140), is filled with gas in described circular groove.
8. uni-drive gear box according to claim 1, it is characterized in that, described bearing (120) is inner ringless roller bearing, and described outer ring (121), roller and described gear shaft (110) form described inner ringless roller bearing.
9. the uni-drive gear box according to any one of claim 1 ~ 8, it is characterized in that, inwall one end of described connection chamber (100) is provided with projection (150), the other end is embedded with back-up ring (160), and described bearing (120) is located between described projection (150) and described back-up ring (160).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520009359.5U CN204512372U (en) | 2015-01-07 | 2015-01-07 | For the uni-drive gear box of aeroengine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520009359.5U CN204512372U (en) | 2015-01-07 | 2015-01-07 | For the uni-drive gear box of aeroengine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204512372U true CN204512372U (en) | 2015-07-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520009359.5U Active CN204512372U (en) | 2015-01-07 | 2015-01-07 | For the uni-drive gear box of aeroengine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204512372U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109027194A (en) * | 2018-09-12 | 2018-12-18 | 中国航发湖南动力机械研究所 | Aero-engine gear-box and aero-engine |
-
2015
- 2015-01-07 CN CN201520009359.5U patent/CN204512372U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109027194A (en) * | 2018-09-12 | 2018-12-18 | 中国航发湖南动力机械研究所 | Aero-engine gear-box and aero-engine |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |