CN214063725U - Wind-powered electricity generation gear box guide shaft left end seal structure - Google Patents
Wind-powered electricity generation gear box guide shaft left end seal structure Download PDFInfo
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- CN214063725U CN214063725U CN202022470634.7U CN202022470634U CN214063725U CN 214063725 U CN214063725 U CN 214063725U CN 202022470634 U CN202022470634 U CN 202022470634U CN 214063725 U CN214063725 U CN 214063725U
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- hollow guide
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Abstract
The utility model discloses a wind power gear box guide shaft left end sealing structure with better sealing performance, a hollow guide shaft penetrates through the left end and the right end in the wind power gear box, and a fan variable pitch control line cable passes through the hollow guide shaft and is connected with a motor slip ring at the right end of the hollow guide shaft; the planet carrier connecting part of the planet carrier extends inwards in the radial direction, the inner wall of the planet carrier connecting part is opposite to the peripheral micro-gap of the shaft body II of the hollow guide shaft, and an axial guide annular bulge which extends rightwards to the inner hole of the sun gear in the axial direction is arranged at the position, close to the periphery of the shaft body II of the hollow guide shaft, of the right end of the planet carrier connecting part; the two radial O-shaped sealing rings are arranged between the outer periphery of the shaft body II of the guide shaft and the inner periphery of the planet carrier connecting part in a sealing mode at intervals; a shaft body I of the hollow guide shaft is provided with a plurality of radial clamping grooves which penetrate through the inside and the outside and correspond to the clamping blocks; the inner ends of the clamping blocks are clamped with the corresponding radial clamping grooves; the sun gear is arranged in the planet carrier body, and the inner hole of the sun gear surrounds the shaft body III of the hollow guide shaft.
Description
Technical Field
The utility model relates to a wind-powered electricity generation gear box, especially a wind-powered electricity generation gear box guiding axle left end seal structure.
Background
As shown in fig. 1, a left end sealing structure of a conventional wind power gear box guiding shaft comprises a hollow guiding shaft 1 including a shaft body i 11, a shaft body ii 12 and a shaft body iii 13 integrally connected in sequence from left to right and having an outer diameter gradually increasing from small to large, an end cap 2 including a cap body 20, a radial end cap body 21 extending radially outward from the cap body 20 and an axial end cap body 22 extending axially rightward from a left end of the radial end cap body 21, a planet carrier 3 including a planet carrier body 30 and a planet carrier connecting portion 31 extending radially inward from the planet carrier body 30, an end face O-ring 4, two radial O-rings 5, a plurality of clamping blocks 6 and a sun gear 7, wherein the hollow guiding shaft 1 penetrates through a left end and a right end of the wind power gear box, a fan pitch control cable (for simplicity, the fan pitch control cable is not shown in fig. 1, the same below) penetrates through the hollow guiding shaft 1 and is connected to a motor slip ring at the right end of the hollow guiding shaft 1 (for simplicity, a motor slip ring is not shown in fig. 1, the same applies below), the cover body 20 of the end cover 2 is sleeved on the shaft body ii 12 of the hollow guide shaft 1, the right end of the radial end cover body 21 and the outer periphery of the axial end cover body 22 are respectively attached to the left end and the inner periphery of the planet carrier connecting part 31 of the planet carrier 3, the end surface O-shaped seal ring 4 is installed between the right end of the radial end cover body 21 of the end cover 2 and the left end of the planet carrier connecting part 31 of the planet carrier 3, and the two radial O-shaped seal rings 5 are installed between the inner periphery of the cover body 20 and the outer periphery of the shaft body ii 12 of the hollow guide shaft 1 in a sealing manner at intervals; be equipped with a plurality of radial draw-in groove 110 that link up inside and outside and a plurality of fixture block 6 is corresponding on the axis body I11 of hollow guiding axle 1, the inner and the radial draw-in groove 110 joint that a plurality of fixture block 6 corresponds with a plurality of, the right-hand member is installed with the left end laminating of lid 20, sun gear 7 is installed in planet carrier body 30, and its left end is relative with the right-hand member interval of planet carrier connecting portion 31 of planet carrier 3, and hole interval ground encircles hollow guiding axle 1's axis body III 13.
The technical problem of the sealing structure at the left end of the guide shaft of the wind power gear box in the prior art is that; the two radial O-shaped sealing rings 5 are worn after long-term use and can generate lubricating oil leakage after aging failure, the lubricating oil flows through the two radial O-shaped sealing rings 5 from the sun wheel 7 inwards and leftwards along the periphery of the shaft body III 13, the shaft body II 12 and the shaft body I11 of the hollow guide shaft 1 and between the inner wall of the cover body 20, enters the hollow guide shaft 1 from gaps existing at the clamping positions of the inner ends of a plurality of clamping blocks 6 and a plurality of corresponding radial clamping grooves 110, drips on a fan variable pitch control line cable in the hollow guide shaft 1, and flows to the connecting position of the right end of the hollow guide shaft 1 and the motor from the periphery of the fan variable pitch control line cable, so that the lubricating oil leakage is caused to pollute the environment, the short circuit is caused to trigger, and the motor slip ring is burnt; the sealing performance and the safety are poor, the radial O-shaped sealing ring 5 needs to be maintained and replaced, and the maintenance cost is high.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to provide a wind-powered electricity generation gear box guiding axle left end seal structure that leakproofness, security are better, and cost of maintenance is lower.
In order to solve the technical problem, the utility model discloses a wind power gear box guide shaft left end seal structure, its characterized in that includes including the body I, body II and body III hollow guide shaft 1 that are connected as an organic whole and the external diameter is from little to big gradually from left to right in proper order, the planet carrier that includes the planet carrier body and the planet carrier connecting portion that radially extends inwards from the planet carrier body, two radial O type sealing rings, a plurality of fixture blocks and sun gear;
the fan variable pitch control line cable penetrates through the hollow guide shaft and is connected with the motor slip ring at the right end of the hollow guide shaft;
the planet carrier connecting part of the planet carrier extends inwards in the radial direction, the inner wall of the planet carrier connecting part is opposite to the peripheral micro-gap of the shaft body II of the hollow guide shaft, and an axial guide annular bulge which extends rightwards to the inner hole of the sun gear in the axial direction is arranged at the position, close to the periphery of the shaft body II of the hollow guide shaft, of the right end of the planet carrier connecting part;
the two radial O-shaped sealing rings are arranged between the outer periphery of the shaft body II of the guide shaft and the inner periphery of the planet carrier connecting part in a sealing mode at intervals;
a shaft body I of the hollow guide shaft is provided with a plurality of radial clamping grooves which penetrate through the inside and the outside and correspond to the clamping blocks; the inner ends of the clamping blocks are clamped with the corresponding radial clamping grooves;
the sun gear is arranged in the planet carrier body, and the inner hole of the sun gear surrounds the shaft body III of the hollow guide shaft.
Preferably, the axial section of the axial guide annular projection is a tapered shape which is wide at the left and narrow at the right.
Preferably, the axial width of the part of the planet carrier connecting part of the planet carrier, which is close to the shaft body II of the hollow guide shaft, is smaller than that of the shaft body II.
Preferably, an annular groove is formed in the periphery of the shaft body iii of the hollow guide shaft, one end of the annular groove is located near the left side below the right end of the axial guide annular protrusion, and the other end of the annular groove is located at the right side away from the right side below the right end of the axial guide annular protrusion.
Preferably, both ends of an annular groove formed in the outer circumference of the shaft body iii of the hollow guide shaft are inclined.
Preferably, every fixture block in a plurality of fixture blocks includes connecting portion and the axial dimension that is less than the axial dimension of connecting portion by the radial inward extension of connecting portion joint portion, the joint portion of every fixture block in a plurality of fixture block and the axis body I of hollow guiding axle go up a radial draw-in groove joint in a plurality of radial draw-in grooves that correspond.
The utility model has the following advantages;
the utility model discloses in, the planet carrier connecting portion of planet carrier radially inwards extend and the inner wall is relative with the periphery micro-gap of the axis body II of hollow guiding axle, and the periphery department that the right-hand member of planet carrier connecting portion is close to axis body II of hollow guiding axle is equipped with the axial and guides cyclic annular arch in extending to the sun gear hole right, and two radial O type sealing washer interval ground seal installation are between the periphery of axis body II of guiding axle and planet carrier connecting portion interior week.
Therefore, after lubricating oil lubricates the meshing point of the sun gear, when the lubricating oil flows through the planet carrier, the lubricating oil is shielded and guided by the axial guide annular bulge, and cannot directly flow to the position of two radial O-shaped sealing rings which are arranged between the outer periphery of the shaft body II of the guide shaft and the inner periphery of the connecting part of the planet carrier at intervals. Therefore, after the two radial O-shaped sealing rings are worn and aged for a long time and fail, lubricating oil cannot flow to the clamping positions of the inner ends of the clamping blocks and the radial clamping grooves corresponding to the clamping blocks, and cannot enter the hollow guide shaft from gaps existing in the clamping positions of the radial clamping grooves, drip on a fan variable pitch control line cable in the hollow guide shaft and flow to the connecting position of the right end of the hollow guide shaft and a motor sliding ring from the outer periphery of the fan variable pitch control line cable, so that the lubricating oil cannot leak to pollute the environment, the lubricating oil cannot leak to cause short circuit triggering, and the motor cannot be burnt; the sealing performance and the safety are good, the radial O-shaped sealing ring does not need to be replaced, and the maintenance cost is low.
Drawings
FIG. 1 is a schematic view of a prior art left end seal structure of a guide shaft of a wind turbine gearbox;
fig. 2 is the utility model discloses a wind-powered electricity generation gear box guiding axle left end seal structure's schematic diagram.
Detailed Description
The following describes in detail preferred embodiments of the present invention with reference to the accompanying drawings.
In the description of the present invention, it is to be understood that the terms "left", "right", "inner", "outer", "radial", "axial", and the like, 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, and 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 therefore, should not be construed as limiting the present invention. In addition, in the description of the present invention, "a plurality" means three or more unless specifically limited otherwise.
Referring to fig. 2, the sealing structure for the left end of the guide shaft of the wind power gearbox of the present invention comprises a hollow guide shaft 1 comprising a shaft body i 11, a shaft body ii 12 and a shaft body iii 13 which are integrally connected in sequence from left to right and have gradually increasing outer diameters, a planet carrier 3 comprising a planet carrier body 30 and a planet carrier connecting part 31 extending radially inward from the planet carrier body 30, two radial O-shaped sealing rings 5, a plurality of clamping blocks 6 and a sun gear 7; the hollow guide shaft 1 penetrates through the left end and the right end in the wind power gear box, and a fan pitch control line cable (for simplification, the fan pitch control line cable is not shown in fig. 2, the same below) penetrates through the hollow guide shaft 1 and is connected with a motor sliding ring at the right end of the hollow guide shaft 1 (for simplification, the motor sliding ring is not shown in fig. 2, the same below); the planet carrier connecting part 31 of the planet carrier 3 extends radially inwards, the inner wall of the planet carrier connecting part is opposite to the peripheral micro-gap of the shaft body II 12 of the hollow guide shaft 1, and an axial guide annular bulge 32 which axially extends rightwards into the inner hole of the sun gear 7 is arranged at the position, close to the periphery of the shaft body II 12 of the hollow guide shaft 1, of the right end of the planet carrier connecting part 31; the two radial O-shaped sealing rings 5 are arranged between the outer periphery of the shaft body II 12 of the guide shaft 1 and the inner periphery of the planet carrier connecting part 31 in a sealing mode at intervals; a shaft body I11 of the hollow guide shaft 1 is provided with a plurality of radial clamping grooves 110 which penetrate through the inside and the outside and correspond to the clamping blocks 6; the inner ends of the clamping blocks 6 are clamped with the corresponding radial clamping grooves 110; the sun gear 7 is arranged in the planet carrier body 30, and the inner hole of the sun gear surrounds the shaft body III 13 of the hollow guide shaft 1. Thus, when the lubricating oil lubricates the meshing point of the sun gear 7 and flows through the carrier 3, the lubricating oil is blocked and guided by the axial direction guide annular projection 32, and cannot directly flow to the positions where the two radial O-ring seals 5 mounted at intervals between the outer periphery of the shaft body ii 12 of the guide shaft 1 and the inner periphery of the carrier connecting portion 31 are located. Therefore, after the two radial O-shaped seal rings 5 are worn and aged for a long time, lubricating oil cannot flow to the clamping positions of the inner ends of the plurality of fixture blocks 6 and the plurality of radial clamping grooves 110 corresponding to the plurality of fixture blocks 6, and further cannot enter the hollow guide shaft 1 from gaps existing in the clamping positions of the plurality of radial clamping grooves 110, drip on a fan variable pitch control line cable in the hollow guide shaft 1, and flow to the connecting position of the right end of the hollow guide shaft 1 and a motor slip ring from the periphery of the fan variable pitch control line cable, so that the lubricating oil cannot leak to pollute the environment, the lubricating oil cannot be leaked to cause a trigger short circuit, and a motor is burnt; the sealing performance and the safety are good, the radial O-shaped sealing ring 5 does not need to be replaced, and the maintenance cost is low.
As shown in fig. 2, the axial section of the axially guiding annular projection 32 is preferably tapered to be wide at the left and narrow at the right. This provides a better guiding and guiding effect for the axially directed annular projection 32, so that when the lubricant oil flows through the engagement area of the sun gear 7, it will flow faster under the action of gravity towards the axially directed annular projection 32, and will be guided by the axially directed annular projection 32 towards the shaft body ii 12 of the hollow guide shaft 1, and finally flow under the action of gravity into the interior of the gear housing. Therefore, lubricating oil is prevented from flowing to the positions of the two radial O-shaped sealing rings 5 leftwards, the lubricating oil cannot flow to the clamping positions of the inner ends of the clamping blocks 6 and the corresponding radial clamping grooves 110, and the lubricating oil cannot enter the hollow guide shaft 1 through gaps existing in the clamping positions of the radial clamping grooves 110, drip on a fan variable pitch control line cable in the hollow guide shaft 1 and flow to the connecting position of the right end of the hollow guide shaft 1 and a motor sliding ring through the periphery of the fan variable pitch control line cable. Therefore, lubricating oil leakage cannot be caused to pollute the environment, and trigger short circuit and motor burnout cannot be caused; the sealing performance and the safety are better.
The axial width of the part of the carrier connecting part 31 of the carrier 3 close to the shaft body ii 12 of the hollow guide shaft 1 is preferably smaller than the axial width of the shaft body ii 12. This enables the width of the carrier connecting portion 31 to form a small gap between the shaft body ii 12 of the hollow guide shaft 1 and the carrier connecting portion, in which the two radial O-ring seals 5 are mounted, and also enables the weight and energy consumption to be reduced.
As shown in fig. 2, the hollow guide shaft 1 is preferably provided with an annular groove 130 on the outer periphery of the shaft body iii 13, the annular groove 130 having one end located near the left side below the right end of the axial guiding annular projection 32 and the other end located at the right side away from the right side below the right end of the axial guiding annular projection 32. When lubricating oil flows through the meshing position of the sun gear 7, the lubricating oil can quickly flow to the axial guide annular protrusion 32 under the action of gravity, is guided into the annular groove 130 on the shaft body II 12 of the hollow guide shaft 1 by the axial guide annular protrusion 32, and quickly flows into the interior of the gear box under the action of gravity, so that the lubricating oil is better prevented from flowing to the positions where the two radial O-shaped sealing rings 5 are located leftwards, further cannot flow to the clamping positions of the inner ends of the plurality of clamping blocks 6 and the corresponding plurality of radial clamping grooves 110, cannot enter the hollow guide shaft 1 through gaps existing in the clamping positions of the plurality of radial clamping grooves 110, and drips on the fan variable pitch control wire cable in the hollow guide shaft 1 and flows to the connecting position of the right end of the hollow guide shaft 1 and the motor sliding ring through the periphery of the fan variable pitch control wire cable. Therefore, lubricating oil leakage cannot be caused to pollute the environment, and trigger short circuit and motor burnout cannot be caused; the sealing performance and the safety are better.
As shown in fig. 2, both ends of the annular groove 130 preferably provided on the outer periphery of the shaft body iii 13 of the hollow guide shaft 1 are inclined, that is, the left end is inclined radially from inside to left and the right end is inclined radially from inside to right. When the lubricating oil flows through the meshing part of the sun gear 7, the lubricating oil flows to the axial guiding annular bulge 32 quickly under the action of gravity, is better guided to the annular groove 130 on the shaft body II 12 of the hollow guide shaft 1 by the axial guiding annular bulge 32 and flows into the interior of the gear box quickly under the action of gravity, and the sealing performance and the safety are better.
Referring to fig. 2, each of the plurality of clamping blocks 6 includes a connecting portion 60 and a clamping portion 61, which extends radially inward from the connecting portion 60 and has an axial dimension smaller than that of the connecting portion 60, and the clamping portion 61 of each of the plurality of clamping blocks 6 is clamped with one of a plurality of radial clamping grooves 110 corresponding to the shaft body i of the hollow guide shaft. This makes fixture block 6 can both better with draw-in groove 110 joint, has better use intensity again.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made without departing from the gist of the present invention within the knowledge of those skilled in the art.
Claims (6)
1. A sealing structure at the left end of a guide shaft of a wind power gear box is characterized by comprising a hollow guide shaft 1, a planet carrier, two radial O-shaped sealing rings, a plurality of clamping blocks and a sun wheel, wherein the hollow guide shaft 1 comprises a shaft body I, a shaft body II and a shaft body III which are sequentially and integrally connected from left to right and have gradually increased outer diameters from small to large;
the fan variable pitch control line cable penetrates through the hollow guide shaft and is connected with the motor slip ring at the right end of the hollow guide shaft;
the planet carrier connecting part of the planet carrier extends inwards in the radial direction, the inner wall of the planet carrier connecting part is opposite to the peripheral micro-gap of the shaft body II of the hollow guide shaft, and an axial guide annular bulge which extends rightwards to the inner hole of the sun gear in the axial direction is arranged at the position, close to the periphery of the shaft body II of the hollow guide shaft, of the right end of the planet carrier connecting part;
the two radial O-shaped sealing rings are arranged between the outer periphery of the shaft body II of the guide shaft and the inner periphery of the planet carrier connecting part in a sealing mode at intervals;
a shaft body I of the hollow guide shaft is provided with a plurality of radial clamping grooves which penetrate through the inside and the outside and correspond to the clamping blocks; the inner ends of the clamping blocks are clamped with the corresponding radial clamping grooves;
the sun gear is arranged in the planet carrier body, and the inner hole of the sun gear surrounds the shaft body III of the hollow guide shaft.
2. The wind power gear box guide shaft left end sealing structure as claimed in claim 1, wherein an axial section of said axial guide annular projection is a tapered shape which is wide on the left and narrow on the right.
3. The guide shaft left end sealing structure for a wind power gear box according to claim 2, wherein the axial width of the portion of the carrier connecting portion of the carrier which is close to the shaft body ii of the hollow guide shaft is smaller than the axial width of the shaft body ii.
4. The left end seal structure for the guide shaft of a wind power gearbox as claimed in claim 3, wherein said hollow guide shaft has an annular groove provided on the outer periphery of the shaft body III thereof, said annular groove having one end located in the vicinity of the left side below the right end of the axially guiding annular projection and the other end located at the right side away from the below of the right end of the axially guiding annular projection.
5. The guide shaft left end sealing structure for a wind power gear box according to claim 4, wherein both ends of the annular groove provided on the outer circumference of the shaft body III of the hollow guide shaft are inclined.
6. The wind power gear box guide shaft left end sealing structure as claimed in claim 5, wherein each of the plurality of clamping blocks comprises a connecting portion and a clamping portion extending radially inward from the connecting portion and having an axial dimension smaller than that of the connecting portion, and the clamping portion of each of the plurality of clamping blocks is clamped with one of a plurality of corresponding radial clamping grooves on the shaft body I of the hollow guide shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022470634.7U CN214063725U (en) | 2020-10-30 | 2020-10-30 | Wind-powered electricity generation gear box guide shaft left end seal structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022470634.7U CN214063725U (en) | 2020-10-30 | 2020-10-30 | Wind-powered electricity generation gear box guide shaft left end seal structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214063725U true CN214063725U (en) | 2021-08-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022470634.7U Active CN214063725U (en) | 2020-10-30 | 2020-10-30 | Wind-powered electricity generation gear box guide shaft left end seal structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214063725U (en) |
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2020
- 2020-10-30 CN CN202022470634.7U patent/CN214063725U/en active Active
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