CN216975735U - Gear box - Google Patents
Gear box Download PDFInfo
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- CN216975735U CN216975735U CN202220430460.8U CN202220430460U CN216975735U CN 216975735 U CN216975735 U CN 216975735U CN 202220430460 U CN202220430460 U CN 202220430460U CN 216975735 U CN216975735 U CN 216975735U
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- oil
- bearing
- oil return
- labyrinth
- end cover
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Abstract
The utility model relates to the technical field of gear boxes, and discloses a gear box, which comprises: a planet carrier; a bearing; an oil slinger; the end cover is sleeved on the oil slinger and forms a labyrinth oil duct, an oil cavity communicated with the labyrinth oil duct is enclosed by the end cover, the bearing, the oil slinger and the planet carrier, the bearing can be lubricated by oil in the oil cavity, an oil return annular bulge extending into the oil cavity is arranged on one side, close to the bearing, of the end cover along the circumferential direction, the oil return annular bulge is located on the upstream of the labyrinth oil duct and is arranged at an interval with the bearing, a containing ring groove is formed in the root of the oil return annular bulge, and the containing ring groove is located on one side, away from the oil slinger, of the oil return annular bulge. According to the gear box disclosed by the utility model, the oil return annular bulge additionally arranged on the end cover is positioned at the upstream of the labyrinth oil passage, so that part of oil in the oil cavity is blocked from entering the labyrinth oil passage and directly flowing to the oil pool, and the oil quantity of the oil flowing to the labyrinth oil passage in the oil cavity is reduced, so that the probability of oil leakage is reduced, and the maintenance cost of the gear box is reduced.
Description
Technical Field
The utility model relates to the technical field of gear boxes, in particular to a gear box.
Background
Wind power is used as a renewable energy source, has strong advantages for power generation, and has the advantages of low construction cost, small occupied area, convenience in maintenance and the like compared with thermal power generation, solar energy, hydraulic power generation and other energy sources. The gearbox is one of key components of the wind driven generator, and is used for increasing the speed of energy input by the blades and the lower rotating speed and then transmitting the energy to the motor for generating power. The bearing is taken as an important part in the gear box, for example, the planet carrier bearing is used for supporting the planet carrier to rotate and reducing the friction coefficient in the rotating process, the bearing plays a vital role in the gear box, the lubrication of oil liquid is vital in the operation process of the bearing, the existing gear box is limited by the structure of the existing gear box, the possibility of oil liquid leakage is high, and the maintenance cost in the operation process of the gear box is increased.
SUMMERY OF THE UTILITY MODEL
Based on the above, the utility model aims to provide a gearbox, which reduces the possibility of oil leakage and reduces the maintenance cost of the gearbox.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a gearbox, comprising: a planet carrier; the bearing is sleeved on the planet carrier; the oil slinger is sleeved on the planet carrier; the end cover, the cover is established on the oil slinger and both form the labyrinth oil duct, the end cover the bearing the oil slinger reaches the planet carrier enclose into with the oil pocket of labyrinth oil duct intercommunication, fluid in the oil pocket can lubricate the bearing, the end cover is equipped with along circumference and stretches into the oil return annular of oil pocket is protruding, the oil return annular is protruding to be located the upper reaches of labyrinth oil duct and with the bearing interval sets up, the bellied root of oil return annular is equipped with and holds the annular, it is located to hold the annular the oil return annular is protruding to deviate from one side of oil slinger.
As a preferred version of the gearbox, the oil return annular projection extends in a direction towards the bearing and away from the central axis of the planet carrier.
As a preferred scheme of gear box, be equipped with first inclined ring face on the oil return annular arch, it is equipped with second inclined ring face and arc anchor ring to hold the annular, the arc anchor ring respectively with first inclined ring face with second inclined ring face smooth connection.
As a preferable scheme of the gearbox, the included angle between the first inclined ring surface and the central axis of the roller of the bearing is 15-45 degrees, and the included angle between the second inclined ring surface and the central axis of the roller of the bearing is 30-75 degrees.
As a preferred scheme of the gear box, the gear box further comprises a torque arm sleeved on the bearing, a first communicating oil channel is arranged on the torque arm, an oil injection hole and a second communicating oil channel communicated with the first communicating oil channel are arranged on the end cover, and the oil injection hole is communicated with the second communicating oil channel and the oil cavity.
As a preferable scheme of the gear box, a groove portion and a step portion are arranged on the oil return annular protrusion, the groove portion is recessed towards a direction away from the bearing, and the step portion and the oil slinger form the labyrinth oil passage.
As a preferable scheme of the gearbox, the axial distance between the oil return annular bulge and the inner ring of the bearing is 1mm-5 mm.
As a preferable scheme of the gearbox, the oil return annular bulge does not exceed the inner ring of the bearing along the radial direction outside the bearing.
As a preferable scheme of the gear box, the oil return annular protrusion and the end cover are integrally formed into an integrally formed part.
As a preferred scheme of the gearbox, an oil return groove is formed in the end cover, the oil return groove is located at the downstream of the labyrinth oil passage and communicated with the labyrinth oil passage, and collected oil can be sent to an oil pool through the oil return groove.
The utility model has the beneficial effects that: according to the gear box disclosed by the utility model, the oil return annular bulge and the containing ring groove which are additionally arranged on the end cover are positioned at the upstream of the labyrinth oil passage, the containing ring groove not only can contain oil liquid blocked by the oil return annular bulge, but also plays a role in guiding flow, so that the oil liquid flows to the bottom of the planet carrier along the containing ring groove and finally flows to the oil pool, and as the oil quantity of the oil liquid in the oil cavity flowing to the labyrinth oil passage is reduced, the probability of oil liquid leakage is reduced, and the maintenance cost of the gear box is reduced.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.
FIG. 1 is a cross-sectional view of a gearbox provided in accordance with an embodiment of the present invention;
fig. 2 is a partial enlarged view of fig. 1 at a.
In the figure:
1. a planet carrier; 2. a bearing; 3. an oil slinger;
4. an end cap; 401. a receiving ring groove; 4011. a second toroidal surface; 4012. an arc-shaped ring surface; 4013. a groove part; 4014. a step portion; 4015. transition surface; 402. an oil spray hole; 403. a second communicating oil passage; 404. an oil return groove;
50. a labyrinth oil passage; 60. an oil chamber; 601. an accommodating chamber;
7. an oil return annular bulge; 70. a first toroidal surface;
8. a torsion arm; 80. a first communicating oil duct;
9. a tubular shaft; 10. and (4) a flange.
Detailed Description
In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being 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 for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.
In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The embodiment provides a gear box, as shown in fig. 1 and 2, the gear box comprises a planet carrier 1, a bearing 2, an oil slinger 3 and an end cover 4, the bearing 2 is sleeved on the planet carrier 1, the oil slinger 3 is sleeved on the planet carrier 1 and located on one side of the bearing 2, the end cover 4 is sleeved on the oil slinger 3 and forms a labyrinth oil passage 50, the end cover 4, the bearing 2, the oil slinger 3 and the planet carrier 1 enclose an oil chamber 60 communicated with the labyrinth oil passage 50, oil in the oil chamber 60 can lubricate the bearing 2, an oil return annular protrusion 7 extending into the oil chamber 60 is arranged on one side, close to the bearing 2, of the end cover 4 along the circumferential direction, and the oil return annular protrusion 7 is located at the upstream of the labyrinth oil passage 50 and is arranged at an interval with the bearing 2.
As shown in fig. 1 and fig. 2, the inner wall of the end cover 4 of the present embodiment is provided with an accommodating ring groove 401, the accommodating ring groove 401 is located on a side of the oil return annular protrusion 7 away from the oil slinger 3, and the accommodating ring groove 401 is located at a root of the oil return annular protrusion 7. The ring groove 401 that holds that adds not only can hold the fluid that is blockked by the protruding 7 of oil return annular, still plays the effect of water conservancy diversion for fluid flows to the bottom of planet carrier 1 and finally flows to the oil bath along holding ring groove 401, guarantees that the fluid homoenergetic that is blockked by the protruding 7 of oil return annular can flow to the oil bath in. The receiving ring groove 401 extends in a direction away from the bearing 2 and closer to the central axis of the carrier 1, i.e., the depth of the receiving ring groove 401 gradually increases in a direction closer to the oil return annular protrusion 7.
Specifically, the axial distance between the oil return annular protrusion 7 and the inner ring of the bearing 2 is between 1mm and 5 mm. If the distance between the oil return annular bulge 7 and the bearing 2 is less than 1mm, the bearing 2 may contact with the oil return annular bulge 7 in the operation process, so that the bearing 2 is abraded, and the service life of the bearing 2 is shortened; if the distance between the oil return annular bulge 7 and the bearing 2 is larger than 5mm, a large amount of oil in the oil cavity 60 can pass through the labyrinth oil duct 50, so that the possibility of oil leakage is increased, and the maintenance cost of the gear box can not be reduced, therefore, the distance between the oil return annular bulge 7 and the bearing 2 is controlled to be 1mm-5mm, on the premise that the bearing 2 is not in contact with the oil return annular bulge 7 and the bearing 2 can be fully lubricated, the oil amount of the oil entering the labyrinth oil duct 50 from the oil in the oil cavity 60 can be reduced, and the maintenance cost of the gear box is reduced.
According to the gear box provided by the embodiment, the oil return annular bulge 7 and the containing ring groove 401 which are additionally arranged on the end cover 4 are located at the upstream of the labyrinth oil passage 50, so that part of oil in the oil cavity 60 is blocked to enter the labyrinth oil passage 50 and enter the containing ring groove 401, the containing ring groove 401 also plays a role in guiding the oil, the oil flows to the bottom of the planet carrier 1 along the containing ring groove 401 and finally flows to an oil pool, the oil blocked by the oil return annular bulge 7 can flow to the oil pool, and the oil flow in the oil cavity 60 to the labyrinth oil passage 50 is reduced, so that the probability of oil leakage is reduced, and the maintenance cost of the gear box is reduced.
As shown in fig. 1, the gear box of this embodiment further includes a torque arm 8 sleeved on the bearing 2, the torque arm 8 is provided with a first communicating oil passage 80, the end cover 4 is provided with an oil injection hole 402 and a second communicating oil passage 403 communicated with the first communicating oil passage 80, and the oil injection hole 402 is communicated with the second communicating oil passage 403 and the oil chamber 60. Specifically, the oil flowing out of the first communicating oil passage 80 sequentially passes through the second communicating oil passage 403 and the oil injection hole 402 to enter the oil chamber 60, and the oil in the oil chamber 60 can lubricate the bearing 2, so that the running reliability of the bearing 2 is ensured. Further, the oil injection hole 402 is located outside the accommodating ring groove 401 and the oil return annular protrusion 7, and this arrangement can ensure that oil entering the oil chamber 60 from the oil injection hole 402 can sufficiently lubricate the bearing 2.
As shown in fig. 1 and 2, the oil return annular protrusion 7 of the present embodiment extends along a direction close to the bearing 2 and away from the central axis of the planet carrier 1, and this structure of the oil return annular protrusion 7 can increase the maximum blocked oil amount, ensure that the blocked oil flows into the oil sump, reduce the oil amount entering the labyrinth oil passage 50, and ensure that the oil smoothly flows to the oil sump.
Specifically, as shown in fig. 2, a first inclined ring surface 70 is disposed on the oil return annular protrusion 7 of the present embodiment, a second inclined ring surface 4011 and an arc-shaped ring surface 4012 are disposed on the accommodating ring groove 401, the arc-shaped ring surface 4012 is respectively connected to the first inclined ring surface 70 and the second inclined ring surface 4011 in a smooth manner, and the first inclined ring surface 70, the second inclined ring surface 4011 and the arc-shaped ring surface 4012 can better enable oil to enter the accommodating ring groove 401, so that the possibility that the oil flows to the labyrinth oil passage 50 from all directions is reduced. Further, the first inclined ring surface 70 is formed at an angle of 15 to 45 degrees with respect to the central axis of the roller of the bearing 2, and the second inclined ring surface 4011 is formed at an angle of 30 to 75 degrees with respect to the central axis of the roller of the bearing 2.
As shown in fig. 2, the oil return annular protrusion 7 of the present embodiment is provided with a groove portion 4013, a stepped portion 4014, and a transition surface 4015, the groove portion 4013 is recessed in a direction away from the bearing 2, the stepped portion 4014 forms a labyrinth oil passage 50 with the oil slinger 3, and the transition surface 4015 is smoothly connected to the groove portion 4013 and the first toroidal surface 70, respectively. Wherein, concave part 4013, oil slinger 3, bearing 2 and planet carrier 1 have enclosed and have enclosed the chamber 601 that holds that is used for saving fluid, and the concave part 4013 who sets up makes the volume increase who holds chamber 601, has reduced because of holding the interior fluid increase of chamber 601 and is pushed the possibility that gets into labyrinth oil duct 50.
In order to ensure that oil after lubricating the bearing 2 can flow back to the oil chamber 60, the oil return annular bulge 7 does not exceed the inner ring of the bearing 2 along the radial direction of the bearing 2. Specifically, the outer diameter of the outer ring of the oil return annular protrusion 7 close to the end face of the bearing 2 is a first length, the outer diameter of the inner ring of the bearing 2 close to one end of the oil return annular protrusion 7 is a second length, and the first length is smaller than or equal to the second length, so that the oil after lubricating the bearing 2 can return to the oil chamber 60, and most of the oil after returning to the oil chamber 60 is blocked by the oil return annular protrusion 7, thereby reducing the amount of oil entering the labyrinth oil passage 50 and reducing the possibility of leakage. Once first length is greater than the second length, the direct gap that gets into labyrinth oil duct 50 from oil return annular bulge 7 and bearing 2 of fluid behind the lubricated bearing 2 for the fluid that gets into labyrinth oil duct 50 increases, is unfavorable for reducing leaking of fluid.
As shown in fig. 1 and fig. 2, the outer wall surface of the oil return annular protrusion 7 of the present embodiment is formed by smoothly connecting a plane and/or a curved surface, and the oil return annular protrusion 7 is smoothly connected with the end cover 4. The oil return annular protrusion 7 and the end cover 4 are integrally formed into an integrally formed part, and the arrangement simplifies the processing technology of the integrally formed part and is beneficial to forming of the integrally formed part. In other embodiments, the oil return annular protrusion 7 may also be fixed to the end cover 4, specifically according to actual requirements.
As shown in fig. 2, an oil return groove 404 is disposed on the end cover 4 of the present embodiment, the oil return groove 404 is located at the downstream of the labyrinth oil passage 50 and is communicated with the labyrinth oil passage, and the oil return groove 404 can send collected oil to the oil sump, that is, the oil return groove 404 can send most of the oil flowing out from the labyrinth oil passage 50 to the oil sump, so that the probability of oil leakage is reduced.
In the embodiment, a sealing element (not shown in the figure) such as a sealing ring is arranged between one end of the end cover 4, which is away from the bearing 2, and the oil slinger 3, so as to ensure the sealing property between the end cover 4 and the oil slinger 3 and reduce the possibility of oil leakage. As shown in fig. 1, the gear box of the present embodiment further includes a pipe shaft 9 and a flange 10, and the planet carrier 1 is fixed on the pipe shaft 9 through the flange 10.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. Those skilled in the art will appreciate that the present invention is not limited to the particular embodiments described herein, and that various obvious changes, rearrangements and substitutions will now be apparent to those skilled in the art without departing from the scope of the utility model. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A gearbox, comprising:
a planet carrier (1);
the bearing (2) is sleeved on the planet carrier (1);
the oil slinger (3) is sleeved on the planet carrier (1);
end cover (4), the cover is established on oil slinger (3) and both form labyrinth oil duct (50), end cover (4) bearing (2) oil slinger (3) reach planet carrier (1) enclose into with oil pocket (60) of labyrinth oil duct (50) intercommunication, fluid in oil pocket (60) can be lubricated bearing (2), end cover (4) are equipped with along circumference and stretch into the protruding (7) of oil return annular of oil pocket (60), protruding (7) of oil return annular are located the upper reaches of labyrinth oil duct (50) and with bearing (2) interval sets up, the root of the protruding (7) of oil return annular is equipped with and holds annular (401), it is located to hold annular (401) protruding (7) of oil return annular deviates from one side of oil slinger (3).
2. Gearbox according to claim 1, characterised in that the oil return annular projection (7) extends in a direction close to the bearing (2) and away from the centre axis of the planet carrier (1).
3. Gearbox according to claim 2, characterised in that said oil return annular protrusion (7) is provided with a first inclined annular surface (70), said annular housing groove (401) is provided with a second inclined annular surface (4011) and an arc-shaped annular surface (4012), said arc-shaped annular surface (4012) being smoothly connected with said first inclined annular surface (70) and said second inclined annular surface (4011), respectively.
4. A gearbox according to claim 3, characterised in that the angle between the first inclined ring surface (70) and the centre axis of the rollers of the bearing (2) is between 15 ° and 45 ° and the angle between the second inclined ring surface (4011) and the centre axis of the rollers of the bearing (2) is between 30 ° and 75 °.
5. The gearbox according to claim 1, further comprising a torque arm (8) sleeved on the bearing (2), wherein a first communicating oil passage (80) is arranged on the torque arm (8), an oil injection hole (402) and a second communicating oil passage (403) communicated with the first communicating oil passage (80) are arranged on the end cover (4), and the oil injection hole (402) is communicated with the second communicating oil passage (403) and the oil cavity (60).
6. Gearbox according to claim 1, characterised in that the oil return annular protrusion (7) is provided with a groove portion (4013) and a step portion (4014), the groove portion (4013) being recessed towards the direction facing away from the bearing (2), the step portion (4014) forming the labyrinth oil passage (50) with the oil slinger (3).
7. Gearbox according to claim 1, characterised in that the axial distance of the oil return annular projection (7) from the inner ring of the bearing (2) is between 1mm and 5 mm.
8. Gearbox according to claim 1, characterised in that the oil return annular projection (7) does not extend beyond the inner ring of the bearing (2) radially outwards of the bearing (2).
9. Gearbox according to any of claims 1 to 8, characterised in that the oil return annular projection (7) and the end cover (4) are integrally formed as one piece.
10. A gearbox according to any one of claims 1 to 8, characterised in that an oil return groove (404) is provided in the end cover (4), the oil return groove (404) being located downstream of the labyrinth passage (50) and communicating therewith, the oil return groove (404) being capable of delivering collected oil to an oil sump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220430460.8U CN216975735U (en) | 2022-03-01 | 2022-03-01 | Gear box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220430460.8U CN216975735U (en) | 2022-03-01 | 2022-03-01 | Gear box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216975735U true CN216975735U (en) | 2022-07-15 |
Family
ID=82356333
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220430460.8U Active CN216975735U (en) | 2022-03-01 | 2022-03-01 | Gear box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216975735U (en) |
-
2022
- 2022-03-01 CN CN202220430460.8U patent/CN216975735U/en active Active
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| PP01 | Preservation of patent right |
Effective date of registration: 20230207 Granted publication date: 20220715 |
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Date of cancellation: 20230327 Granted publication date: 20220715 |