CN219317556U - Compact rear box structure and wind power gear box - Google Patents
Compact rear box structure and wind power gear box Download PDFInfo
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- CN219317556U CN219317556U CN202320752250.5U CN202320752250U CN219317556U CN 219317556 U CN219317556 U CN 219317556U CN 202320752250 U CN202320752250 U CN 202320752250U CN 219317556 U CN219317556 U CN 219317556U
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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 compact rear box structure and a wind power gear box, and belongs to gear box equipment. The wind turbine comprises an upwind direction flange surface, a downwind direction flange surface and a body part, wherein the body part connects the upwind direction flange surface and the downwind direction flange surface into a whole; a first shaft hole for the middle shaft to pass through and a second shaft hole for the output shaft to pass through are distributed in the downwind flange surface, and the middle shaft and the output shaft are in transmission connection through a parallel gear pair; the inner contour part area of the downwind flange surface is arranged along the outer edge of the parallel stage gear pair, and at least a preset distance is reserved between the downwind flange surface and the parallel stage gear pair. The utility model makes the structure of the rear box body more compact by profiling the outer contour of the parallel gear pair, saves the rear box body material, reduces the weight of the rear box body and improves the torque density of the wind power gear box.
Description
Technical Field
The utility model belongs to gear box equipment, and particularly relates to a compact rear box structure and a wind power gear box.
Background
The wind power gear box is used as a key part of the doubly-fed wind power generator set and the semi-direct drive wind power generator set, and has the main effects of converting the low rotation speed of the wind wheel into the high rotation speed of the output shaft, wherein the output shaft is connected with the generator, and the power can be generated when the rotation speed reaches the rated rotation speed of the generator.
The torque density is an important index for measuring the weight of the wind power gear box and the competitiveness of the product, and the smaller the weight is, the larger the torque density is, and the more the wind power gear box has the competitiveness at the market end. How to increase the torque density is an important subject of wind power gear box research. The wind power gearbox rear box structure is designed, so that a plurality of structural forms can be realized, and under certain structural forms (such as China application CN 1-10725923A), the distance between the rear box and the parallel gear pair is overlarge, so that the weight of the rear box is larger, and the torque density of the wind power gearbox is larger.
Disclosure of Invention
In order to overcome the technical defects, the utility model provides a compact rear box structure and a wind power gear box, and aims to solve the problems related to the background technology.
The utility model provides a compact rear box structure and a wind power gear box, comprising: the wind turbine comprises an upwind flange face, a downwind flange face and a body part, wherein the body part connects the upwind flange face and the downwind flange face into a whole; a first shaft hole for the middle shaft to pass through and a second shaft hole for the output shaft to pass through are distributed in the downwind flange surface, and the middle shaft and the output shaft are in transmission connection through a parallel gear pair; the inner contour part area of the downwind flange surface is arranged along the outer edge of the parallel stage gear pair, and a preset distance is reserved between the downwind flange surface and the parallel stage gear pair.
Preferably or alternatively, the downwind flange face inner contour and the outer contour are equally spaced or approximately equally spaced planes formed by curves.
Preferably or alternatively, the parallel stage gear pair comprises: a pinion gear coaxially connected with the output shaft, and a large gear coaxially connected with the intermediate shaft.
Preferably or optionally, the peripheries of the first shaft hole and the second shaft hole are respectively provided with a first bearing seat and a second bearing seat.
Preferably or alternatively, the first bearing seat and the second bearing seat are connected with the inner wall of the body part through rib plates.
Preferably or alternatively, the profile of the downwind flange face comprises: the device comprises a first circular arc section, a second circular arc section, a third circular arc section, a first straight line section, a second straight line section and a third straight line section, wherein the first circular arc section is arranged concentrically with a large gear, the second circular arc section is concentrically distributed with a bolt reference circle on the circumferential direction of a windward flange surface, the third circular arc section is concentrically arranged with a small gear, and the first straight line section, the second straight line section and the third straight line section are used for sequentially connecting the first circular arc section with the second circular arc section, the second circular arc section with the third circular arc section, the third circular arc section and the first circular arc section.
Preferably or optionally, the radius of the inner contour of the first arc segment is set to R1, and the radius of the large gear is set to R2; and R1-R2 is more than or equal to 10mm and less than or equal to 100mm.
Preferably or optionally, the radius of the inner contour of the third arc section is set as R3, the pinion is connected with the second shaft hole through a bearing, and the outer diameter of the bearing is set as R4; and R3-R4 is more than or equal to 10mm and less than or equal to 100mm.
Preferably or optionally, the radius of the inner contour of the second arc section is set to be R5, the radius of the outer contour of the second arc section is set to be R6, and the radius of the reference circle where the circumferential bolt mounting hole of the downwind flange surface is located is set to be R7; R7-R6 are larger than or equal to the radius of the bolt, and R5 is larger than or equal to R2;
the utility model further provides a wind power gear box comprising the compact rear box body structure.
The utility model relates to a compact rear box body structure and a wind power gear box, which have the following beneficial effects compared with the prior art: the utility model makes the structure of the rear box body more compact by profiling the outer contour of the parallel gear pair, saves the rear box body material, reduces the weight of the rear box body and improves the torque density of the wind power gear box.
Drawings
Fig. 1 is a side view of a rear case in the present utility model.
Fig. 2 is a front view of the rear case of the present utility model.
Fig. 3 is a perspective view of the rear case in the present utility model.
Fig. 4 is a schematic view of the structure of a rear case of the present utility model including a parallel stage gear pair.
The reference numerals are: 1. upwind flange surface; 2. a body portion; 3. a downwind flange surface; 4. rib plates; 5. a first shaft hole; 6. a second shaft hole; 7. a pinion gear; 8. a bearing; 9. a large gear; 1-1, a bolt mounting hole; 3-1, a first arc section; 3-2, a first straight line segment; 3-3, a second arc section; 3-4, a second straight line segment; 3-5, a third arc section; 3-6, a third straight line segment; 5-1, a first bearing seat; 6-1, a second bearing.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present utility model. It will be apparent, however, to one skilled in the art that the utility model may be practiced without one or more of these details. In other instances, well-known features have not been described in detail in order to avoid obscuring the utility model.
Referring to fig. 1 to 4, a compact rear case structure and a wind power gear case, comprising: upwind flange face 1, downwind flange face 3 and body 2.
The outer contour and the inner contour of the upwind flange face 1 are standard circles, the outer diameter of the upwind flange face 1 is determined by the size (design interface) of an adjacent gear ring, a bolt mounting hole 1-1 is formed in the upwind flange face 1, and a fastening bolt penetrates through the bolt mounting hole 1-1 to be connected with the inner gear ring. The utility model provides a down wind flange face 3 outline and the equidistant or nearly equidistant curve of inner contour constitutes the plane down wind flange face 3 is interior to be distributed to have the first shaft hole 5 that supplies the jackshaft to pass and the second shaft hole 6 that supplies the output shaft to pass, the periphery of first shaft hole 5 and second shaft hole 6 is equipped with first bearing frame 5-1, second bearing frame 6-1 respectively, be equipped with gusset 4 even transition between first bearing frame 5-1 and the second bearing frame 6-1, first bearing frame 5-1, second bearing frame 6-1 are connected through gusset 4 with the inner wall of body portion 2, pass through parallel level gear pair transmission connection between jackshaft and the output shaft, parallel level gear pair includes: a pinion 7 coaxially connected to the output shaft, and a large gear 9 coaxially connected to the intermediate shaft. The inner contour part area of the downwind flange surface 3 is arranged along the outer edge of the parallel stage gear pair, and a preset interval is reserved between the downwind flange surface and the parallel stage gear pair. The body part 2 connects the upwind direction flange surface 1 and the downwind direction flange surface 3 into a whole and should be in smooth transition.
Specifically, the contour of the downwind flange surface 3 includes: the first circular arc section 3-1 concentrically arranged with the large gear 9, the second circular arc section 3-3 concentrically distributed with the bolt reference circle on the circumferential direction of the upwind flange surface 1, the third circular arc section 3-5 concentrically arranged with the small gear 7, and the first straight line section 3-2, the second straight line section 3-4 and the third straight line section 3-6 of the first circular arc section 3-1 and the second circular arc section 3-3, the second circular arc section 3-3 and the third circular arc section 3-5, the third circular arc section 3-5 and the first circular arc section 3-1 which are sequentially connected.
In a further embodiment, the first circular arc segment 3-1 is arranged concentrically with the gearwheel 9; and R1-R2 is less than or equal to 10mm and less than or equal to 100mm, the radius of the inner contour of the first circular arc section 3-1 is set as R1, and the radius of the large gear 9 is set as R2. The third circular arc section 3-5 is arranged concentrically with the pinion 7; and R3-R4 is less than or equal to 10mm and less than or equal to 100mm, the radius of the inner contour of the third circular arc section 3-5 is set as R3, the pinion 7 is connected with the second shaft hole 6 through the bearing 8, and the outer diameter of the bearing 8 is set as R4. The profile modeling design is carried out on the outer profile of the parallel gear pair, so that the inner profile of the downwind flange surface 3 of the rear box body is more compact, the rear box body material is saved, the weight of the rear box body is reduced, and the torque density of the wind power gear box is improved.
In a further embodiment, the second arc segments 3-3 are concentrically distributed with the bolt graduation circle in the circumferential direction of the downwind flange surface 3; R7-R6 are larger than or equal to the radius of the bolt, and R5 is larger than or equal to R2; the radius of the inner contour of the second circular arc section 3-3 is set as R5, the radius of the outer contour of the second circular arc section 3-3 is set as R6, and the radius of the reference circle where the circumferential bolt mounting hole 1-1 of the upwind direction flange face 1 is located is set as R7. By profiling the bolt reference circle of the upwind flange surface 1, the excircle at the bottom of the downwind flange surface 3 is as large as possible, so that the volume of the oil pool of the rear box body is larger. Of course, considering the oil mass, the maximum can not exceed the bolt reference circle of the upwind flange surface 1, and the whole bolts of the upwind flange surface 1 are exposed, so that the disassembly and assembly of the bolts are convenient, and the maintainability of the bolts on the upwind tower of the rear box body can be met.
In order to facilitate understanding of the technical scheme of the compact rear box body structure, a brief description is made of the working principle: according to the embodiment of the utility model, the outer contour of the parallel gear pair is subjected to profiling design, so that the structure of the rear box body is more compact, the weight of the rear box body can be reduced, and the bolt can meet the maintainability in a cabin by carrying out profiling design on the bolt position at the bottom of the rear box body, thereby achieving the effects of reducing cost and enhancing efficiency and increasing the competitiveness of the wind power gear box at the market end.
In addition, the specific features described in the above embodiments may be combined in any suitable manner without contradiction. The various possible combinations of the utility model are not described in detail in order to avoid unnecessary repetition.
Claims (10)
1. A compact back case structure comprising: the wind-up flange comprises a wind-up flange surface (1), a wind-down flange surface (3) and a body part (2), wherein the body part (2) connects the wind-up flange surface (1) and the wind-down flange surface (3) into a whole; a first shaft hole (5) for a middle shaft to pass through and a second shaft hole (6) for an output shaft to pass through are distributed in the downwind flange surface (3), and the middle shaft and the output shaft are in transmission connection through a parallel gear pair; the parallel stage gear pair is characterized in that the inner contour part area of the downwind flange surface (3) is arranged along the outer edge of the parallel stage gear pair, and a preset interval is reserved between the downwind flange surface and the parallel stage gear pair.
2. Compact back box structure according to claim 1, characterized in that the inner contour and the outer contour of the downwind flange face (3) are plane surfaces formed by curves equally spaced or approximately equally spaced.
3. The compact back case structure of claim 1, wherein the parallel stage gear pair includes: a pinion (7) coaxially connected to the output shaft, and a large gear (9) coaxially connected to the intermediate shaft.
4. Compact back box structure according to claim 1, characterized in that the periphery of the first shaft hole (5) and the second shaft hole (6) is provided with a first bearing seat (5-1) and a second bearing seat (6-1) respectively.
5. Compact back box structure according to claim 4, characterized in that the first bearing seat (5-1), the second bearing seat (6-1) are connected with the inner wall of the body part (2) by means of a rib plate (4).
6. Compact back box structure according to claim 1, characterized in that the contour of the downwind flange face (3) comprises: the device comprises a first circular arc section (3-1) concentrically arranged with a large gear (9), a second circular arc section (3-3) concentrically distributed with a bolt reference circle on the circumferential direction of the upwind flange surface (1), a third circular arc section (3-5) concentrically arranged with a small gear (7), and a first straight line section (3-2), a second straight line section (3-4) and a third straight line section (3-6) which are used for sequentially connecting the first circular arc section (3-1) and the second circular arc section (3-3), the second circular arc section (3-3) and the third circular arc section (3-5), the third circular arc section (3-5) and the first circular arc section (3-1).
7. The compact back case structure according to claim 6, characterized in that the radius of the inner contour of the first circular arc section (3-1) is set to R1, and the radius of the large gear (9) is set to R2; and R1-R2 is more than or equal to 10mm and less than or equal to 100mm.
8. The compact back box structure according to claim 7, characterized in that the radius of the inner contour of the third arc section (3-5) is set as R3, the pinion (7) is connected with the second shaft hole (6) through a bearing (8), and the outer diameter of the bearing (8) is set as R4; and R3-R4 is more than or equal to 10mm and less than or equal to 100mm.
9. The compact back box structure according to claim 8, wherein the radius of the inner contour of the second circular arc section (3-3) is set to R5, the radius of the outer contour of the second circular arc section (3-3) is set to R6, and the radius of the reference circle where the circumferential bolt mounting hole (1-1) of the upwind flange face (1) is located is set to R7; and R7-R6 is larger than or equal to the radius of the bolt, and R5 is larger than or equal to R2.
10. A wind power gearbox comprising a compact back box structure according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320752250.5U CN219317556U (en) | 2023-04-07 | 2023-04-07 | Compact rear box structure and wind power gear box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320752250.5U CN219317556U (en) | 2023-04-07 | 2023-04-07 | Compact rear box structure and wind power gear box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219317556U true CN219317556U (en) | 2023-07-07 |
Family
ID=87024853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320752250.5U Active CN219317556U (en) | 2023-04-07 | 2023-04-07 | Compact rear box structure and wind power gear box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219317556U (en) |
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2023
- 2023-04-07 CN CN202320752250.5U patent/CN219317556U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 213000 No. 99, Wuyi Road, Changzhou City, Jiangsu Province Patentee after: Changzhou CRRC Ruitai Equipment Technology Co.,Ltd. Patentee after: CRRC Qishuyan Locomotive and Rolling Stock Technology Research Institute Co.,Ltd. Address before: 213000 No. 99, Wuyi Road, Changzhou City, Jiangsu Province Patentee before: Changzhou CRRC Ruitai Equipment Technology Co.,Ltd. Patentee before: CRRC QISHUYAN INSTITUTE Co.,Ltd. |