CN210858913U - Fan bracket assembly and engine with same - Google Patents
Fan bracket assembly and engine with same Download PDFInfo
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- CN210858913U CN210858913U CN201921535912.3U CN201921535912U CN210858913U CN 210858913 U CN210858913 U CN 210858913U CN 201921535912 U CN201921535912 U CN 201921535912U CN 210858913 U CN210858913 U CN 210858913U
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- fan bracket
- bracket assembly
- fan
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Abstract
The utility model belongs to the technical field of the engine spare part, concretely relates to fan bracket assembly and have its engine. The utility model provides a fan bracket assembly includes the fan bracket body, coupling bearing and fan pulley, the fan bracket body is equipped with the dead bearing hole, the cooperation of coupling bearing is connected in the dead bearing hole, the coupling bearing includes first cylindrical roller bearing portion and spherical bearing portion, fan pulley fixed connection is in the axle head of coupling bearing, the dead bearing hole includes first hole portion and second hole portion, the diameter of second hole portion is greater than the diameter of first hole portion, wherein, first hole portion corresponds with first cylindrical roller bearing portion, second hole portion corresponds with spherical bearing portion. Through using the fan bracket assembly among this technical scheme, the diameter of second aperture part is greater than the diameter of first aperture part to the second aperture part corresponds with spherical bearing portion, makes the axle attach bearing outer lane do not bear radial load region and axle attach bearing separation contactless, has reduced the contact stress of load-bearing zone.
Description
Technical Field
The utility model belongs to the technical field of the engine spare part, concretely relates to fan bracket assembly and have its engine.
Background
The existing large cylindrical surface structure of the bearing seat hole has large form and position errors and large matching area, the actual effective matching area of the outer ring corresponding to the cylindrical roller is small, and the stress caused by working load is large. In addition, the large cylindrical surface is matched to cause a large interference increment (caused by form and position errors) of the shaft connecting bearing, so that the actual clearance of the bearing is smaller than the designed clearance, and the risk of bearing ablation exists.
Disclosure of Invention
The invention aims to at least solve the problem of high working load stress of a shaft coupling bearing. The purpose is realized by the following technical scheme:
a first aspect of the present invention provides a fan bracket assembly, comprising:
the fan bracket comprises a fan bracket body, wherein the fan bracket body is provided with a bearing seat hole;
the shaft connecting bearing is connected in the bearing seat hole in a matching mode and comprises a first cylindrical roller bearing part and a spherical bearing part;
the fan pulley, fan pulley fixed connection in the axle head of axle even bearing, the bearing housing hole includes first aperture portion and second aperture portion, the diameter of second aperture portion is greater than the diameter of first aperture portion, wherein, first aperture portion with first cylindrical roller bearing portion corresponds, the second aperture portion with spherical bearing portion corresponds.
Through using the fan bracket assembly among this technical scheme, the diameter of second aperture is greater than the diameter of first aperture to the second aperture corresponds with spherical bearing portion, makes the axle connect the bearing inner race not bear the radial load region and the axle connects the bearing separation contactless, has reduced the contact stress of bearing area, reduces the harmful interference increment that the form and position error caused simultaneously, has guaranteed that the bearing play is in reasonable within range.
In addition, according to the utility model discloses a fan bracket assembly still can have following additional technical characterstic:
in some embodiments of the present invention, the bearing housing hole further includes a third hole portion, the second hole portion is located between the first hole portion and the third hole portion, the shaft coupling bearing further includes a second cylindrical roller bearing portion, and the second cylindrical roller bearing portion corresponds to the third hole portion.
In some embodiments of the present invention, the diameter of the third hole portion is equal to the diameter of the first hole portion.
In some embodiments of the present invention, the shaft coupling bearing has a three-row rolling element structure, and the first cylindrical roller bearing portion, the spherical bearing portion and the second cylindrical roller bearing portion are respectively arranged in the axial direction.
In some embodiments of the present invention, the shaft coupling bearing is connected to the first hole portion and the third hole portion by interference fit, and the shaft coupling bearing is connected to the second hole portion by clearance fit.
In some embodiments of the present invention, a bearing retainer ring is further disposed between the shaft coupling bearing and the fan pulley.
The utility model also provides an engine, this engine includes:
a body;
the fan bracket assembly is the fan bracket assembly in the embodiment;
and the fan is arranged on the machine body through a fan bracket assembly.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like parts are designated by like reference numerals throughout the drawings. In the drawings:
FIG. 1 schematically illustrates a partial cross-sectional block diagram of a fan bracket assembly according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of the fan bracket body of FIG. 1;
fig. 3 is a partial sectional structural view of the shaft coupling bearing of fig. 1.
10: fan bracket body, 11: first hole portion, 12: second hole portion, 13: a third hole portion;
20: shaft coupling bearing, 21: first cylindrical roller bearing portion, 22: spherical bearing portion, 23: a second cylindrical roller bearing portion;
30: a fan pulley;
40: and a bearing retainer ring.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only, and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" may be intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," "including," and "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless specifically identified as an order of performance. It should also be understood that additional or alternative steps may be used.
Although the terms first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first," "second," and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.
For convenience of description, spatially relative terms, such as "inner", "outer", "lower", "below", "upper", "above", and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. Such spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "below … …" can include both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
Fig. 1 schematically illustrates a partial cross-sectional structural view of a fan bracket assembly according to an embodiment of the present invention. Fig. 2 is a sectional view illustrating the fan bracket of fig. 1. As shown in fig. 1 and 2, the present invention provides a fan bracket assembly and an engine having the same. The utility model provides a fan bracket assembly includes fan bracket body 10, axle even bearing 20 and fan pulley 30, fan bracket body 10 is equipped with the bearing housing hole, axle even bearing 20 cooperation is connected in the bearing housing downthehole, axle even bearing 20 includes first cylindrical roller bearing portion 21 and spherical bearing portion 22, fan pulley 30 fixed connection is in the axle head of axle even bearing 20, the bearing housing hole includes first hole portion 11 and second hole portion 12, the diameter of second hole portion 12 is greater than the diameter of first hole portion 11, wherein, first hole portion 11 corresponds with first cylindrical roller bearing portion 21, second hole portion 12 corresponds with spherical bearing portion 22
Through using the fan bracket assembly among this technical scheme, the diameter of second hole portion 12 is greater than the diameter of first hole portion 11 to second hole portion 12 corresponds with spherical bearing portion 22, makes the axle connect bearing 20 outer lane not bear the separation of radial load region and axle connect bearing 20 contactless, has reduced the contact stress of bearing area, reduces the harmful interference increment that the form and position error caused simultaneously, has guaranteed that the bearing play is in reasonable within range.
Further, in the present embodiment, the housing hole further includes a third hole portion 13, the second hole portion 12 is located between the first hole portion 11 and the third hole portion 13, and the shaft coupling bearing 20 further includes a second cylindrical roller bearing portion 23, and the second cylindrical roller bearing portion 23 is disposed corresponding to the third hole portion 13. Because the middle of the shaft coupling bearing 20 in the embodiment is of a spherical bearing structure, the second hole part 12 with a large diameter is arranged between the second hole part 12 and the third hole part 13, so that a region of the outer ring of the shaft coupling bearing 20, which does not bear radial load, is separated from and does not contact the shaft coupling bearing 20, the effective contact area of the region of the outer ring of the shaft coupling bearing 20, which bears the radial load, is increased, and local contact stress is reduced.
Specifically, in the present embodiment, the diameter of the third hole portion 13 is equal to the diameter of the first hole portion 11. The diameter of the third hole portion 13 is equal to the diameter of the first hole portion 11, so that the two cylindrical roller bearing portions can bear a certain degree of radial load, and reliability is improved.
Further, in the present embodiment, the shaft coupling bearing 20 has a three-row rolling element structure, and includes a first cylindrical roller bearing portion 21, a spherical bearing portion 22, and a second cylindrical roller bearing portion 23 in the axial direction. Different bearing portions correspond different hole sites, can be so that cylindrical roller bearing portion reduce with bearing housing hole interference fit area, reduced the interference increment that the form and position error caused, promoted the reliability of shaft coupling bearing, simultaneously, still make not bear radial load region and the separation contactless of shaft coupling bearing 20, promoted the regional effective area of contact of bearing radial load of shaft coupling bearing 20 outer lane.
Specifically, in this embodiment, the shaft coupling bearing 20 is connected to the first hole portion 11 and the third hole portion 13 in an interference fit manner, and the interference connection manner has a simple structure and good coaxiality, and can bear a large axial force, a large torque and a large dynamic load. The shaft coupling bearing 20 is connected with the second hole portion 12 in a clearance fit mode, the clearance fit mode can reduce the interference fit area of the shaft coupling bearing 20 and the bearing hole on the whole, the interference increment caused by the form and position error is reduced, and the reliability of the shaft coupling bearing is improved.
Specifically, in the present embodiment, a retainer ring 40 is further provided between the shaft coupling bearing 20 and the fan pulley 30. The retainer ring 40 may serve to axially secure the shaft coupling bearing 20.
The utility model also provides an engine, include:
a body;
the fan bracket assembly is more than one fan bracket assembly;
and the fan is arranged on the machine body through a fan bracket assembly.
Through using the engine among this technical scheme, the diameter of the second hole portion of fan bracket assembly is greater than the diameter of first hole portion to the second hole portion corresponds with spherical bearing portion, makes the axle connect the bearing inner race not bear the separation contactless of radial load region and axle connect the bearing, has reduced the contact stress of bearing area, reduces the harmful interference increment that the form and position error caused simultaneously, has guaranteed that the bearing play is in reasonable within range.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. A fan bracket assembly, said fan bracket assembly comprising:
the fan bracket comprises a fan bracket body, wherein the fan bracket body is provided with a bearing seat hole;
the shaft connecting bearing is connected in the bearing seat hole in a matching mode and comprises a first cylindrical roller bearing part and a spherical bearing part;
the fan pulley, fan pulley fixed connection in the axle head of axle even bearing, the bearing housing hole includes first aperture portion and second aperture portion, the diameter of second aperture portion is greater than the diameter of first aperture portion, wherein, first aperture portion with first cylindrical roller bearing portion corresponds, the second aperture portion with spherical bearing portion corresponds.
2. The fan bracket assembly in accordance with claim 1, wherein said bearing housing bore further comprises a third bore portion, said second bore portion positioned between said first bore portion and said third bore portion, said shaft coupling bearing further comprising a second cylindrical roller bearing portion, said second cylindrical roller bearing portion positioned in correspondence with said third bore portion.
3. The fan bracket assembly of claim 2, wherein a diameter of said third hole portion is equal to a diameter of said first hole portion.
4. The fan bracket assembly according to claim 2, wherein said shaft connecting bearing has a three-row rolling element structure comprising a first cylindrical roller bearing portion, a spherical bearing portion and a second cylindrical roller bearing portion in an axial direction.
5. The fan bracket assembly in accordance with claim 2, wherein said shaft bearing is in interference fit connection with both said first and third bore portions, and wherein said shaft bearing is in clearance fit connection with said second bore portion.
6. The fan bracket assembly of any of claims 1-5, further comprising a bearing retainer between said shaft bearing and said fan pulley.
7. An engine, characterized in that the engine comprises:
a body;
a fan bracket assembly according to any one of claims 1 to 6;
and the fan is arranged on the machine body through the fan bracket assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921535912.3U CN210858913U (en) | 2019-09-12 | 2019-09-12 | Fan bracket assembly and engine with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921535912.3U CN210858913U (en) | 2019-09-12 | 2019-09-12 | Fan bracket assembly and engine with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210858913U true CN210858913U (en) | 2020-06-26 |
Family
ID=71306082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921535912.3U Active CN210858913U (en) | 2019-09-12 | 2019-09-12 | Fan bracket assembly and engine with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210858913U (en) |
-
2019
- 2019-09-12 CN CN201921535912.3U patent/CN210858913U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |