CN215444980U - Three-stage planetary gear box of wind driven generator - Google Patents
Three-stage planetary gear box of wind driven generator Download PDFInfo
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- CN215444980U CN215444980U CN202023323389.3U CN202023323389U CN215444980U CN 215444980 U CN215444980 U CN 215444980U CN 202023323389 U CN202023323389 U CN 202023323389U CN 215444980 U CN215444980 U CN 215444980U
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Abstract
The utility model discloses a three-stage planetary gear box of a wind driven generator, which comprises a two-stage planetary gear box and a third gear box butted with the two-stage planetary gear box, wherein the two-stage planetary gear box comprises: a disc-shaped chassis; a hollow interior box cover open at one end to form an opening, the box cover being fixedly connected to an end of the box cover to close the opening; a disk-shaped carrier provided in the casing and dividing an inner space of the casing into a first gear chamber distant from the chassis and a second gear chamber adjacent to the chassis in an axial direction; a planetary gear train. According to the utility model, the axial size of the planetary gearbox is reduced, two different torsion forces can be output in two directions, and the assembly and maintenance operation of the wind driven generator in a limited installation space are facilitated.
Description
Technical Field
The utility model relates to the field of wind driven generators, in particular to a three-stage planetary gear box of a wind driven generator.
Background
In the field of wind generators, it is known to use planetary gearboxes of different configurations to achieve power transmission. During the research and implementation of the power transmission, researchers found that the planetary gearboxes in the prior art have at least the following problems:
the existing bidirectional output gearbox is complex in structure and multiple in related parts, so that the circumferential volume of the gearbox is too large, and the assembly and the maintenance of the gearbox are difficult to operate in the limited installation space of the wind driven generator.
In view of the above, it is necessary to develop a three-stage planetary gearbox of a wind turbine to solve the above problems.
SUMMERY OF THE UTILITY MODEL
In order to overcome the problems of the planetary gear box, the utility model provides a three-stage planetary gear box of a wind driven generator, which has a compact structure and fewer parts, and can carry out bidirectional output on two different torsion forces while reducing the axial size of the planetary gear box.
As for the planetary gear box, the three-stage planetary gear box of the wind power generator of the present invention for solving the above technical problems includes:
including second grade planetary gear box and with the third gear box that second grade planetary gear box dock, second grade planetary gear box includes:
a disc-shaped chassis;
a hollow interior box cover open at one end to form an opening, the box cover being fixedly connected to an end of the box cover to close the opening;
a disk-shaped carrier provided in the casing and dividing an inner space of the casing into a first gear chamber distant from the chassis and a second gear chamber adjacent to the chassis in an axial direction;
the planetary gear train comprises at least 4 planetary gear shafts axially arranged in the box cover, and a first planetary gear and a second planetary gear are sequentially and coaxially fixedly connected to each planetary gear shaft;
the sun gear is arranged in the box cover and is positioned at the center of the planetary gear train;
a bowl-shaped ring gear provided in the second gear chamber; and
the power output shaft sequentially penetrates through the sun gear, the planet carrier, the inner gear ring and the chassis, and two ends of the power output shaft are respectively exposed from the top of the box cover and the bottom of the chassis to form a first output end and a second output end respectively;
the third gear case includes:
a base;
the bottom of the annular third inner gear ring is open to form a bottom opening, and the base is fixedly connected to the bottom of the third inner gear ring to seal the bottom opening;
the third planet carrier is arranged in the third inner gear ring and is rotationally connected with the base;
a third planetary gear train comprising at least three third planetary gears circumferentially arranged in the third ring gear, each third planetary gear being rotationally connected with the third planet carrier; and
and the third sun gear is in transmission connection with the second output end through a transmission shaft which is connected to the top of the third inner gear ring in a rotating mode.
Optionally, the planet wheel shaft penetrates through the planet carrier so that the first planet wheel and the second planet wheel are located in the first gear chamber and the second gear chamber respectively; each of the first planet gears being in constant mesh with the sun gear; the bottom wall of the inner gear ring is meshed with the power output shaft.
Optionally, the outer end of the sun gear passes through the housing to form a power input.
Optionally, each second planet gear is in constant mesh with the inner side wall of the inner gear ring.
In practice, it is found that the wind power generator often needs to output power in at least four directions, and in order to solve the problem, a two-stage planetary gearbox of the wind power generator is further improved:
the planetary wheel shafts are provided with an even number, the planetary wheel shafts are arranged to be composed of at least two wheel shaft subsets, each wheel shaft subset comprises a pair of planetary wheel shafts which are adjacently arranged, an output gear is arranged between the corresponding pair of planetary wheel shafts in each wheel shaft subset, and the outer end of the output gear penetrates through the box cover to form a third output end.
Optionally, the output gear is in mesh with the first planet gear.
Optionally, a fourth output end protruding downward is formed at the bottom of the third planet carrier, and the fourth output end passes through the base and then is exposed from the bottom of the base.
One of the above technical solutions has the following advantages or beneficial effects: the planetary gearbox can carry out bidirectional output on two different torsion forces while reducing the axial size of the planetary gearbox, and facilitates assembly and maintenance operation in the limited installation space of the wind driven generator.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings of the embodiments will be briefly described below, and it is apparent that the drawings in the following description relate only to some embodiments of the present invention and are not limiting thereof, wherein:
FIG. 1 is an axial cross-sectional view of a three-stage planetary gearbox of a wind turbine, according to one embodiment of the present invention;
FIG. 2 is an axial cross-sectional view of a secondary planetary gearbox in a three-stage planetary gearbox of a wind turbine proposed according to an embodiment of the present invention;
FIG. 3 is a top view of a secondary planetary gearbox of a three-stage planetary gearbox of a wind turbine proposed according to an embodiment of the present invention;
FIG. 4 is a top view of a two-stage planetary gearbox of a three-stage planetary gearbox of a wind turbine, illustrating the internal structure of the gearbox, according to one embodiment of the present invention;
fig. 5 is a schematic view illustrating a state where a planetary wheel shaft is engaged with the ring gear in a three-stage planetary gear box of a wind turbine according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
In the drawings, the shape and size may be exaggerated for clarity, and the same reference numerals will be used throughout the drawings to designate the same or similar components.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description and claims of the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. Also, the use of the terms "a," "an," or "the" and similar referents do not denote a limitation of quantity, but rather denote the presence of at least one. The word "comprise" or "comprises", and the like, means that the element or item listed before "comprises" or "comprising" covers the element or item listed after "comprising" or "comprises" and its equivalents, and does not exclude other elements or items. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
In the following description, terms such as center, thickness, height, length, front, back, rear, left, right, top, bottom, upper, lower, etc., are defined with respect to the configurations shown in the respective drawings, and in particular, "height" corresponds to a dimension from top to bottom, "width" corresponds to a dimension from left to right, "depth" corresponds to a dimension from front to rear, which are relative concepts, and thus may be varied accordingly depending on the position in which it is used, and thus these or other orientations should not be construed as limiting terms.
Terms concerning attachments, coupling and the like (e.g., "connected" and "attached") refer to a relationship wherein structures are secured or attached, either directly or indirectly, to one another through intervening structures, as well as both movable or rigid attachments or relationships, unless expressly described otherwise.
According to an embodiment of the present invention, as shown in fig. 1 to 3, it can be seen that the three-stage planetary gearbox 1 of the wind power generator includes:
including second grade planetary gear case and with second grade planetary gear case docks the third gear box, its characterized in that, second grade planetary gear case includes:
a disk-shaped chassis 11;
an internally hollow box cover 111 which is open at one end to form an opening, the box cover 111 being fixedly connected to an end of the box cover 111 to close the opening;
a disk-shaped carrier 16 provided in the casing cover 111 and axially dividing an internal space of the casing cover 111 into a first gear chamber 111a distant from the base plate 11 and a second gear chamber 111b adjacent to the base plate 11;
the planetary gear train comprises at least 4 planetary gear shafts 14 axially arranged in the box cover 111, and a first planetary gear 141 and a second planetary gear 142 are sequentially coaxially and fixedly connected to each planetary gear shaft 14;
a sun gear 15 provided in the casing 111 and located at the center of the planetary gear train;
a bowl-shaped ring gear 12 provided in the second gear chamber 111 b; and
a power output shaft 153 sequentially passing through the sun gear 15, the planet carrier 16, the ring gear 12 and the chassis 11, wherein two ends of the power output shaft 153 are respectively exposed from the top of the box cover 111 and the bottom of the chassis 11 to form a first output end 1531 and a second output end 1532;
the third gear case includes:
a base 18;
a ring-shaped third ring gear 19 having a bottom opening formed by opening the bottom thereof, the base 18 being fixed to the bottom of the third ring gear 19 to close the bottom opening;
a third carrier 192 disposed within the third ring gear 19 and rotatably connected to the base 18;
a third planetary gear train including at least three third planetary gears 191 circumferentially arranged in the third ring gear 19, each third planetary gear 191 being rotatably connected to the third carrier 192; and
and a third sun gear 17, which is in driving connection with the second output port 1532 through a driving shaft 1533 rotatably connected to the top of the third ring gear 19.
Further, the planetary gear shaft 14 is disposed through the planetary carrier 16 such that the first planetary gear 141 and the second planetary gear 142 are respectively located in the first gear chamber 111a and the second gear chamber 111 b; each of the first planetary gears 141 is in constant mesh with the sun gear 15; the bottom wall 121 of the ring gear 12 is engaged with the power output shaft 153.
Further, the outer end of the sun gear 15 passes through the housing 111 to form a power input 151.
Further, each of the second planet gears 142 is in constant mesh with the inner side wall of the inner ring gear 12.
Referring to fig. 2 to 4, the planetary axles 14 are provided in even number, the planetary axles 14 are arranged to be composed of at least two wheel axle subsets, each wheel axle subset comprises a pair of adjacent planetary axles 14, an output gear 13 is provided between a corresponding pair of planetary axles 14 in each wheel axle subset, and the outer end of the output gear 13 penetrates through the box cover 111 to form a third output end 131.
Further, the output gear 13 is kept in mesh with the first planetary gear 141.
Referring again to fig. 1, a fourth output end 1921 protruding downward is formed at the bottom of the third planet carrier 192, and the fourth output end 1921 passes through the base 18 and is exposed from the bottom of the base 18.
In the embodiment shown in fig. 3 and 4, there are 4 planetary wheel shafts 14 and correspondingly, there are 2 output gears 13.
In another embodiment, there are 6 planet wheel shafts 14 and correspondingly, there are 3 output gears 13.
The number of apparatuses and the scale of the process described herein are intended to simplify the description of the present invention. Applications, modifications and variations of the present invention will be apparent to those skilled in the art.
The features of the different implementations described herein may be combined to form other embodiments not specifically set forth above. The components may be omitted from the structures described herein without adversely affecting their operation. Further, various individual components may be combined into one or more individual components to perform the functions described herein.
Furthermore, while embodiments of the utility model have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable in a variety of fields of endeavor to which the utility model pertains, and further modifications may readily be made by those skilled in the art, it being understood that the utility model is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.
Claims (7)
1. A three-stage planetary gearbox for a wind turbine generator, comprising a two-stage planetary gearbox and a third gearbox interfacing with the two-stage planetary gearbox, wherein the two-stage planetary gearbox comprises:
a disk-shaped chassis (11);
an internally hollow box cover (111) which is open at one end to form an opening, wherein the box cover (111) is fixedly connected to the end part of the box cover (111) to close the opening;
a disk-shaped carrier (16) that is provided in the case cover (111) and that divides an internal space of the case cover (111) into a first gear chamber (111a) that is distant from the chassis (11) and a second gear chamber (111b) that is adjacent to the chassis (11) in the axial direction;
the planetary gear train comprises at least 4 planetary gear shafts (14) axially arranged in the box cover (111), and a first planetary gear (141) and a second planetary gear (142) are sequentially and coaxially fixedly connected to each planetary gear shaft (14);
a sun gear (15) which is provided in the case cover (111) and is located at the center of the planetary gear train;
a ring gear (12) provided in the second gear chamber (111 b); and
the power output shaft (153) sequentially penetrates through the sun gear (15), the planet carrier (16), the inner gear ring (12) and the chassis (11), and two ends of the power output shaft (153) are respectively exposed from the top of the box cover (111) and the bottom of the chassis (11) to form a first output end (1531) and a second output end (1532);
the third gear case includes:
a base (18);
a ring-shaped third inner gear ring (19) which is open at the bottom to form a bottom opening, wherein the base (18) is fixedly connected to the bottom of the third inner gear ring (19) to seal the bottom opening;
a third planet carrier (192) disposed within the third annulus gear (19) and rotationally coupled to the base (18);
a third planetary gear train comprising at least three third planet gears (191) circumferentially arranged in the third ring gear (19), each third planet gear (191) being in rotational connection with the third planet carrier (192); and
and the third sun gear (17) is in transmission connection with the second output end (1532) through a transmission shaft (1533) which is connected to the top of the third inner gear ring (19) in a rotating mode.
2. Three-stage planetary gearbox for wind power generators according to claim 1, characterised in that the planetary wheel shaft (14) is arranged through the planetary wheel carrier (16) so that the first planetary wheel (141) and the second planetary wheel (142) are located in the first gear chamber (111a) and the second gear chamber (111b), respectively; each of the first planet wheels (141) being in constant mesh with the sun wheel (15); the bottom wall (121) of the inner gear ring (12) is meshed with the power output shaft (153).
3. Three-stage planetary gearbox for wind generators according to claim 2, characterised in that the outer end of the sun wheel (15) passes through the casing (111) to form the power input (151).
4. Three-stage planetary gearbox of a wind turbine according to claim 2, characterised in that each of said second planet wheels (142) is in constant mesh with the inner side wall of said inner ring gear (12).
5. Three-stage planetary gearbox for wind power generators according to claim 2, characterised in that the planetary axles (14) are provided with an even number, that the planetary axles (14) are arranged to be made up of at least two wheel axle subsets, each wheel axle subset comprising a pair of adjacently arranged planetary axles (14), that an output gear (13) is provided between a respective pair of planetary axles (14) in each wheel axle subset, and that the outer end of the output gear (13) passes through the casing (111) to form a third output (131).
6. Three-stage planetary gearbox for wind generators according to claim 5, characterised in that said output gear (13) is kept meshed with the first planet gear (141).
7. The three-stage planetary gearbox for wind power generators as claimed in claim 1, wherein the bottom of the third planet carrier (192) is formed with a fourth output end (1921) protruding downward, and the fourth output end (1921) is exposed from the bottom of the base (18) after passing through the base (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023323389.3U CN215444980U (en) | 2020-12-31 | 2020-12-31 | Three-stage planetary gear box of wind driven generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023323389.3U CN215444980U (en) | 2020-12-31 | 2020-12-31 | Three-stage planetary gear box of wind driven generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215444980U true CN215444980U (en) | 2022-01-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023323389.3U Active CN215444980U (en) | 2020-12-31 | 2020-12-31 | Three-stage planetary gear box of wind driven generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215444980U (en) |
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2020
- 2020-12-31 CN CN202023323389.3U patent/CN215444980U/en active Active
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