CN216111777U - High-rigidity bearing seat - Google Patents
High-rigidity bearing seat Download PDFInfo
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- CN216111777U CN216111777U CN202122114828.8U CN202122114828U CN216111777U CN 216111777 U CN216111777 U CN 216111777U CN 202122114828 U CN202122114828 U CN 202122114828U CN 216111777 U CN216111777 U CN 216111777U
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- bearing seat
- bearing
- seat body
- rigidity
- cover plate
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Abstract
The utility model discloses a high-rigidity bearing seat which comprises a bearing seat body, wherein the bearing seat body is integrally formed; bearing installation steps are arranged at two ends of the bearing seat body and used for installing a main shaft bearing, a plurality of lightening holes are formed in the bearing seat body, the shell at the edge of each lightening hole extends outwards to form a cover plate boss, and the cover plate bosses are used for installing cover plates. Compared with two separately arranged bearing seat structures, the rigid connection between the two bearing seat structures is increased, so that the rigidity of the gearbox is high, and the use reliability of the gearbox is improved; the utility model is provided with a plurality of lightening holes, and materials dug out of the lightening holes can obviously reduce the mass of the utility model, thus being beneficial to transportation and installation and being beneficial to the use and maintenance of the wind driven generator.
Description
Technical Field
The utility model relates to a bearing seat, in particular to a high-rigidity bearing seat.
Background
In the double-fed wind generating set, a main shaft component supporting device is a core component for connecting a gear box and a hub, and the performance of the main shaft component supporting device directly influences the running reliability of a fan. The existing wind generating set mainly uses a main shaft component supporting device with a front bearing seat and a rear bearing seat separated, the whole rigidity is low, and the main shaft component supporting device is easy to deform under load, so that the gear box is complex in load and more in fault, and the separated bearing seat structure is not suitable for a high-power wind generator.
Some inventors have proposed some solutions to the above problems, such as the utility model patent published under publication No. CN204419878U entitled "main shaft supporting structure of large wind turbine generator system", which includes a main shaft, a bearing, and a bearing seat, the bearing seat is an integral type bearing seat having two bearing mounting positions, and two single-row tapered roller bearings are arranged in the two bearing mounting positions. The utility model discloses a merge formula bearing frame as an organic whole with two detached bearing frames, so increased the rigidity of bearing frame structure, nevertheless there is certain not enough in this kind of structure, for the rigidity of ensureing the integral type bearing frame, the casing between two bearing installation positions needs great thickness, so the quality of this bearing frame will increase by a wide margin, is unfavorable for transportation and installation, also can increase the load of aerogenerator support, is unfavorable for aerogenerator's use and maintenance.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a high-rigidity bearing seat which is high in rigidity, beneficial to improving the use reliability of a gear box, small in weight, beneficial to transportation and installation and beneficial to use and maintenance of a wind driven generator.
The technical scheme of the utility model is as follows:
a high-rigidity bearing seat comprises a bearing seat body, wherein the bearing seat body is integrally formed; bearing installation steps are arranged at two ends of the bearing seat body and used for installing a main shaft bearing, lightening holes are formed in the bearing seat body, a cover plate boss is formed by protruding the edge of the lightening hole and the shell, and the cover plate boss is used for installing a cover plate.
The high rigidity bearing frame of this scheme, bearing frame body integrated into one piece compares two bearing frame structures of separately arranging, has increased the rigid connection between the two, and the rigidity of bearing frame body is higher, and the deformation that takes place when receiving the load is less, has optimized the form that the gear box received the load, has reduced the frequency that the gear box broke down. The bearing seat body is provided with a plurality of lightening holes, and materials dug out of the lightening holes can obviously reduce the mass of the high-rigidity bearing seat, so that the bearing seat is favorable for transportation and installation and is favorable for the use and maintenance of the wind driven generator. The lightening hole edge shell extends outwards to form a cover plate boss, the cover plate boss is used for installing a cover plate, the cover plate can prevent external impurities from invading the bearing seat body from the lightening hole, and the reliability of the high-rigidity bearing seat in the scheme is improved.
Preferably, the lightening holes are oval in shape. The shape of the lightening hole is elliptical, so that stress concentration at the lightening hole can be reduced, the stability of the bearing seat body under load is improved, and the bearing seat is beneficial to use and maintenance.
Preferably, the length of the long axis of the lightening hole is 0.4-0.6 of the length of the bearing seat body. The longer the long shaft of the lightening hole is, the larger the mass of materials excavated by the lightening hole is, and the smaller the mass of the bearing seat body is, so that the transportation and installation are facilitated; however, as the long axis of the lightening hole is longer, the weakening of the rigid connection between the bearing mounting steps at both ends is higher, and the lower the rigidity of the bearing housing body is, the lower the reliability of the bearing housing body is. Therefore, the length of the long axis of the lightening hole is properly selected.
Preferably, the thickness of the cover plate is 0.05-0.15 of the thickness of the shell at the lightening hole. The thickness of the cover plate is obviously smaller than that of a shell at the position of the lightening hole (the shell at the position before the lightening hole is dug), so that the quality of the bearing seat body in use is obviously reduced, the transportation and the installation are facilitated, and the use and the maintenance of the wind driven generator are facilitated.
Preferably, the number of the lightening holes is at least 2, and the lightening holes are distributed on the bearing seat body. So can ensure that the bearing frame body relatively evenly acts on the casing when receiving axial load, optimize the bearing frame body and receive the load form.
Preferably, the front end of the bearing seat body is provided with two fixing pin installation seats, and the fixing pin installation seats are used for installing wind wheel fixing pins. The fixing pin mounting seat is arranged on the bearing seat body, so that the structure of the wind driven generator is more compact.
Preferably, the front end and the rear end of the bearing seat body are provided with mounting platforms, and the mounting platforms are used for fixing the bearing seat body on the rack. The mounting platform is arranged on the bearing seat body, so that the structure of the wind driven generator is more compact.
Preferably, the cover plate boss sideline is provided with a round angle. The cover plate boss sideline is provided with the fillet, so that stress concentration can be reduced, the stability of the bearing seat body under load is improved, and the use and maintenance of the bearing seat body are facilitated.
Preferably, the inner side of the bearing mounting step is provided with a plurality of protruding parts, and the protruding parts are used for positioning the inner end cover of the main shaft bearing. The diameter of the bearing mounting step is smaller than the diameter of the inner end cover of the spindle bearing, so that the inner end cover of the spindle bearing needs to be mounted in a split mode, the positioning of the inner end cover of the spindle bearing is troublesome due to the fact that the sight is interfered, a worker needs to touch a hole in the inner end cover of the spindle bearing and a hole in the inner side of the bearing mounting step, and screws are screwed into the holes for positioning after the holes are matched in position. On one hand, a certain gap is reserved between the through hole on the inner end cover of the main shaft bearing and the screw, so that the positioning precision is insufficient, and the position error of the end cover which is installed in a split mode is large; on the other hand, the operation space is limited and the sight line is disturbed, so that the positioning operation is difficult.
The inner side of the bearing mounting step is provided with the plurality of protruding parts, the inner end cover of the spindle bearing is provided with the grooves matched with the protruding parts, so that the positioning of the inner end cover of the spindle bearing is completed only by confirming the positions of the protruding parts and putting the grooves on the inner end cover of the spindle bearing towards the protruding parts, the position accuracy of the inner end cover of the spindle bearing is improved, and the operation difficulty of the positioning of the inner end cover of the spindle bearing is reduced.
Preferably, the inner side of the bearing mounting step is provided with a plurality of pin holes, and the pin holes are used for positioning the inner end cover of the main shaft bearing. The positioning of the inner end cap of the spindle bearing is cumbersome, requiring a worker to touch the hole in the inner end cap of the spindle bearing and the hole on the inner side of the bearing mounting step, and to screw in a screw to position after determining that the hole positions are matched. On one hand, a certain gap is reserved between the through hole on the inner end cover of the main shaft bearing and the screw, so that the positioning precision is insufficient, and the position error of the end cover which is installed in a split mode is large; on the other hand, the operation space is limited and the sight line is disturbed, so that the positioning operation is difficult.
The inner side of the bearing mounting step is provided with a plurality of pin holes, when the inner end cover of the main shaft bearing is mounted, the positioning pin is inserted into the pin holes, and the inner end cover of the main shaft bearing is provided with a groove matched with the positioning pin.
The utility model has the beneficial effects that: the rigidity is high, the reliability of the gear box in use is improved, the weight is small, the transportation and the installation are facilitated, and the use and the maintenance of the wind driven generator are facilitated.
Drawings
Fig. 1 is a front view of the present invention.
Fig. 2 is a top view of the present invention.
Fig. 3 is a left side view of the present invention.
Fig. 4 is another left side view of the present invention.
Fig. 5 is an axial cross-sectional view of the present invention.
Fig. 6 is another axial cross-sectional view of the present invention.
Fig. 7 is a schematic view of the present invention after installation.
Fig. 8 is a partial enlarged view of a portion a in fig. 7.
Fig. 9 is a schematic diagram of the positioning of the inner end cap of the spindle bearing.
FIG. 10 is another schematic illustration of the positioning of the inner end cap of the spindle bearing.
In the figure:
a bearing housing body 1;
a bearing mounting step 2;
a main shaft bearing 3;
a lightening hole 4;
a cover plate boss 5;
a cover plate 6;
a fixing pin mounting seat 7;
a mounting platform 8;
a boss portion 9;
a pin hole 10;
and a positioning pin 11.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention are clearly explained and illustrated below with reference to the accompanying drawings, but the following embodiments are only preferred embodiments of the present invention, and not all embodiments. Based on the embodiments in the implementation, other embodiments obtained by those skilled in the art without any creative effort belong to the protection scope of the present invention.
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present scheme, and are not construed as limiting the scheme of the present invention.
These and other aspects of embodiments of the utility model will be apparent with reference to the following description and attached drawings. In the description and drawings, particular embodiments of the utility model have been disclosed in detail as being indicative of some of the ways in which the principles of the embodiments of the utility model may be practiced, but it is understood that the scope of the embodiments of the utility model is not limited thereby. On the contrary, the embodiments of the utility model include all changes, modifications and equivalents coming within the spirit and terms of the claims appended hereto.
In the description of the present invention, it is to be understood that the terms "thickness", "upper", "lower", "horizontal", "top", "bottom", "inner", "outer", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in 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 thus, should not be construed as limiting the present invention. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., and "several" means one or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral connections, either mechanical or electrical, or communicating with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The first embodiment is as follows: as shown in fig. 1, 2, 3, 5, 7, 8 and 9, a high-rigidity bearing housing includes a housing body 1, the housing body 1 is integrally formed; bearing installation steps 2 are arranged at two ends of a bearing seat body 1, the bearing installation steps 2 are used for installing a main shaft bearing 3, lightening holes 4 are formed in the bearing seat body 1, cover plate bosses 5 are formed on the edges of the lightening holes 4 in a protruding mode of a shell, and the cover plate bosses 5 are used for installing cover plates 6.
The high rigidity bearing frame of this embodiment, bearing frame body 1 integrated into one piece compares two bearing frame structures of separately arranging, has increased the rigid connection between the two, and bearing frame body 1's rigidity is higher, and the deformation that takes place when receiving the load is less, has optimized the form that the gear box received the load, has reduced the frequency that the gear box broke down. The bearing seat body 1 is provided with the lightening holes 4, and materials dug out of the lightening holes 4 can obviously reduce the mass of the high-rigidity bearing seat in the embodiment, so that the transportation and installation are facilitated, and the use and maintenance of the wind driven generator are facilitated. The shell at the edge of the lightening hole 4 extends outwards to form a cover plate boss 5, the cover plate boss 5 is used for installing a cover plate 6, and the cover plate 6 can prevent external impurities from invading the bearing seat body 1 from the lightening hole 4, so that the use reliability of the high-rigidity bearing seat of the embodiment is improved.
Further, the lightening holes 4 are oval in shape. The shape of the lightening hole 4 is elliptical, so that stress concentration at the position of the lightening hole 4 can be reduced, the stability of the bearing seat body 1 under load is improved, and the use and maintenance of the bearing seat body are facilitated.
Furthermore, the length of the long axis of the lightening hole 4 is 0.4-0.6 of the length of the bearing seat body 1. The longer the long shaft of the lightening hole 4 is, the larger the mass of materials excavated by the lightening hole 4 is, and the smaller the mass of the bearing seat body 1 is, so that the transportation and installation are facilitated; however, as the long axis of the lightening hole 4 becomes longer, the weakening of the rigid connection between the bearing mounting steps 2 at both ends becomes higher, and the lower the rigidity of the bearing housing body 1 becomes, the lower the reliability of the bearing housing body 1 becomes. Therefore, the length of the long axis of the lightening hole 4 should be properly selected.
Furthermore, the thickness of the cover plate 6 is 0.05-0.15 of the thickness of the shell at the lightening hole 4. The thickness of the cover plate 6 is obviously smaller than that of a shell at the position of the lightening hole 4 (the shell at the position before the lightening hole 4 is dug), so that the mass of the bearing seat body 1 in use is obviously reduced, the transportation and the installation are facilitated, and the use and the maintenance of the wind driven generator are facilitated.
Furthermore, there are 4 lightening holes 4, and the lightening holes 4 are distributed on the bearing seat body 1. So can ensure that the bearing frame body 1 relatively evenly acts on the casing when receiving axial load, optimize the bearing frame body 1 and receive the load form.
Further, the front end of the bearing seat body 1 is provided with two fixing pin installation seats 7, and the fixing pin installation seats 7 are used for installing wind wheel fixing pins. The fixing pin installation seat 7 is arranged on the bearing seat body 1, so that the structure of the wind driven generator is more compact.
Further, both ends are equipped with mounting platform 8 around the bearing frame body 1, and mounting platform 8 is used for fixing bearing frame body 1 in the frame. The mounting platform 8 is arranged on the bearing seat body 1, so that the structure of the wind driven generator is more compact. In this embodiment, be equipped with rigid connection between mounting platform 8, mounting platform 8 thickness is great, plays the effect of strengthening rib, can further increase the rigidity of bearing frame body 1.
Furthermore, 5 sidelines of apron boss are equipped with the fillet. The 5 sidelines of apron boss are equipped with the fillet and can reduce stress concentration, improve the stability when bearing frame body 1 receives the load, are favorable to its use and maintenance.
Further, a plurality of protruding portions 9 are arranged on the inner side of the bearing mounting step 2, and the protruding portions 9 are used for positioning the inner end cover of the spindle bearing 3. Since the diameter of the bore of the bearing mounting step 2 is smaller than the diameter of the inner end cap of the spindle bearing 3, the inner end cap of the spindle bearing 3 needs to be separately mounted, positioning of the inner end cap of the spindle bearing 3 is troublesome due to interference of sight lines, a worker needs to touch a hole in the inner end cap of the spindle bearing 3 and a hole on the inner side of the bearing mounting step 2, determine the position of the holes to match, and then screw in a screw to position. On one hand, a certain gap is formed between the through hole on the inner end cover of the main shaft bearing 3 and the screw, so that the positioning precision is insufficient, and the position error of the end cover which is installed in a split manner is large; on the other hand, the operation space is limited and the sight line is disturbed, so that the positioning operation is difficult.
The inner side of the bearing mounting step 2 is provided with a plurality of protruding parts 9, the inner end cover of the main shaft bearing 3 is provided with a groove matched with the protruding parts 9, so that the positioning of the inner end cover of the main shaft bearing 3 can be completed only by confirming the positions of the protruding parts 9 and putting the groove on the inner end cover of the main shaft bearing 3 towards the protruding parts 9, the position accuracy of the inner end cover of the main shaft bearing 3 is improved, and the operation difficulty of the positioning of the inner end cover of the main shaft bearing 3 is reduced. In this embodiment, the cross-sectional shape of the protruding portion 9 is a wedge shape, so that the protruding portion 9 can play a role in guiding when the inner end cover of the spindle bearing 3 is put in, and the operation difficulty in positioning the inner end cover of the spindle bearing 3 can be further reduced.
The second embodiment is as follows: as shown in fig. 1, 2, 4, 6, 7, 8 and 10, a high rigidity bearing housing of the second embodiment is largely the same as the first embodiment except that the structure for assisting the positioning of the inner end cap of the spindle bearing 3 in the first embodiment is a pin hole 10 instead of the boss 9.
The inner side of the bearing mounting step 2 is provided with a plurality of pin holes 10, and the pin holes 10 are used for positioning the inner end cover of the main shaft bearing 3. The positioning of the inner end cap of the spindle bearing 3 is troublesome, requiring a worker to touch the hole in the inner end cap of the spindle bearing 3 and the hole on the inner side of the bearing mounting step 2, and to screw in a screw for positioning after determining the hole position matching. On one hand, a certain gap is formed between the through hole on the inner end cover of the main shaft bearing 3 and the screw, so that the positioning precision is insufficient, and the position error of the end cover which is installed in a split manner is large; on the other hand, the operation space is limited and the sight line is disturbed, so that the positioning operation is difficult.
The inner side of the bearing mounting step 2 is provided with a plurality of pin holes 10, when the inner end cover of the spindle bearing 3 is mounted, the positioning pins 11 are inserted into the pin holes 10, and the inner end cover of the spindle bearing 3 is provided with grooves matched with the positioning pins 11, so that the positioning of the inner end cover of the spindle bearing 3 can be completed only by confirming the positions of the positioning pins 11 and putting the grooves on the inner end cover of the spindle bearing 3 towards the positioning pins 11, thereby improving the position accuracy of the inner end cover of the spindle bearing 3 and reducing the operation difficulty of positioning the inner end cover of the spindle bearing 3. It should be understood that, since the positioning pins 11 are generally cylindrical, a single positioning pin 11 cannot limit the degree of freedom of rotation, at least two positioning pins 11 are required for each split part of the inner end cover of the spindle bearing 3 to achieve positioning, and in this embodiment, 8 pin holes 10 are formed inside the bearing mounting step 2.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and all simple modifications, alterations and equivalents of the above embodiments according to the technical spirit of the present invention are still within the protection scope of the technical solution of the present invention.
Claims (10)
1. A high-rigidity bearing seat is characterized by comprising a bearing seat body (1), wherein the bearing seat body (1) is integrally formed; bearing installation steps (2) are arranged at two ends of a bearing seat body (1), the bearing installation steps (2) are used for installing a main shaft bearing (3), lightening holes (4) are formed in the bearing seat body (1), a cover plate boss (5) is formed by protruding of a shell at the edge of each lightening hole (4), and the cover plate boss (5) is used for installing a cover plate (6).
2. A high-rigidity bearing seat according to claim 1, wherein the lightening hole (4) is oval in shape.
3. A high-rigidity bearing seat as claimed in claim 2, wherein the length of the long axis of the lightening hole (4) is 0.4-0.6 of the length of the bearing seat body (1).
4. A high-rigidity bearing seat according to any one of claims 1 to 3, wherein the thickness of the cover plate (6) is 0.05 to 0.15 of the thickness of the housing at the lightening hole (4).
5. A high-rigidity bearing seat according to any one of claims 1 to 3, wherein the number of the lightening holes (4) is at least 2, and the lightening holes (4) are circumferentially distributed on the bearing seat body (1).
6. A high-rigidity bearing seat according to claim 1, characterized in that the front end of the bearing seat body (1) is provided with two fixing pin installation seats (7), and the fixing pin installation seats (7) are used for installing wind wheel fixing pins.
7. A high-rigidity bearing seat according to claim 1, wherein the front end and the rear end of the bearing seat body (1) are provided with mounting platforms (8), and the mounting platforms (8) are used for fixing the bearing seat body (1) on a machine frame.
8. A high rigidity bearing seat according to claim 1, wherein the edge line of the cover plate boss (5) is provided with a round angle.
9. A high-rigidity bearing seat according to claim 1, wherein a plurality of convex parts (9) are arranged on the inner side of the bearing mounting step (2), and the convex parts (9) are used for positioning the inner end cover of the main shaft bearing (3).
10. A high-rigidity bearing seat according to claim 1, wherein a plurality of pin holes (10) are formed in the inner side of the bearing mounting step (2), and the pin holes (10) are used for positioning the inner end cover of the main shaft bearing (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122114828.8U CN216111777U (en) | 2021-09-02 | 2021-09-02 | High-rigidity bearing seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122114828.8U CN216111777U (en) | 2021-09-02 | 2021-09-02 | High-rigidity bearing seat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216111777U true CN216111777U (en) | 2022-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122114828.8U Active CN216111777U (en) | 2021-09-02 | 2021-09-02 | High-rigidity bearing seat |
Country Status (1)
| Country | Link |
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| CN (1) | CN216111777U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113847352A (en) * | 2021-09-02 | 2021-12-28 | 浙江运达风电股份有限公司 | High-rigidity bearing seat |
-
2021
- 2021-09-02 CN CN202122114828.8U patent/CN216111777U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113847352A (en) * | 2021-09-02 | 2021-12-28 | 浙江运达风电股份有限公司 | High-rigidity bearing seat |
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