CN221120671U - Vibration-proof bearing of fan and shaft thereof - Google Patents
Vibration-proof bearing of fan and shaft thereof Download PDFInfo
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- CN221120671U CN221120671U CN202323206923.6U CN202323206923U CN221120671U CN 221120671 U CN221120671 U CN 221120671U CN 202323206923 U CN202323206923 U CN 202323206923U CN 221120671 U CN221120671 U CN 221120671U
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 35
- 239000010959 steel Substances 0.000 claims abstract description 35
- 238000010168 coupling process Methods 0.000 claims description 7
- 238000005859 coupling reaction Methods 0.000 claims description 7
- 230000005540 biological transmission Effects 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims description 6
- 238000002955 isolation Methods 0.000 claims description 4
- 238000005096 rolling process Methods 0.000 abstract description 8
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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- Rolling Contact Bearings (AREA)
- Support Of The Bearing (AREA)
Abstract
The utility model provides a fan vibration-proof bearing and a shaft thereof, relates to the technical field of bearing structures, and solves the technical problem that the stability of the existing deep groove ball bearing is weakened while the axial stress is enhanced. The utility model comprises an inner ring with an outer channel at the outer side, an outer ring with an inner channel at the inner side and a steel ball, wherein the outer channel and the inner channel comprise a main channel and secondary channels arranged at two sides of the main channel, the main channel is used for bearing force in the radial direction, and the secondary channels are used for bearing force in the axial direction. According to the utility model, the secondary channels are arranged on the side surfaces of the main channels, when the axial stress of the bearing reaches a certain limit, the steel balls are extruded into the secondary channels from the main channels, and the secondary channels can effectively bear the axial stress and have no influence on the stability of the bearing; when the steel ball rolling device is normally used, the height difference exists between the main channel and the secondary channel, so that the steel ball can be effectively prevented from easily sliding into the secondary channel during normal rotation, and the influence of the secondary channel on the rolling stability of the steel ball is reduced.
Description
Technical Field
The utility model relates to the technical field of bearing structures, in particular to a fan vibration-proof bearing and a shaft thereof.
Background
Because the fan has larger rotating speed and rotating amplitude, in order to meet the rotating speed requirement, a deep groove ball bearing is often used for ensuring the stable rotating transmission of the fan.
The inner and outer raceways of the deep groove ball bearing are arc-shaped deep grooves, and the diameter of each groove is slightly larger than the radius of the steel ball. The friction coefficient is small, the rotating speed is high, but the bearing only plays a radial transmission supporting role at the transmission side, can not bear large axial force, and the fan operation theory has no axial force, but in actual use, the axial force of fan equipment cannot be avoided because of the influence of factors such as thermal expansion and contraction of materials. And the fan bearing supporting point span is large, the length of the shaft is long, the shaft system is influenced by torque and bending moment, and the strength of the shaft system is insufficient. Axial stress easily enables the fan to shake or even vibrate. The service life of the deep groove ball bearing is greatly shortened, and the deep groove ball bearing causes great vibration, so that the deep groove ball bearing needs to be overhauled frequently, and the normal operation of the device is seriously influenced.
Therefore, as the angular contact deep groove ball bearing provided by the patent with the publication number of CN209262087U, the bearing can bear larger axial force, reduce the occurrence of sliding friction, have long service life, effectively reduce the time and the times of replacing the bearing of the rolling mill, reduce the influence on production and reduce the maintenance cost. However, the device changes the inner channel of the inner ring into a peach-shaped channel, changes the contact angle of the inner channel and the steel ball to bear the axial force, but reduces the running stability of the bearing while increasing the axial stress load, and is not suitable for fans and other devices needing high-speed stable running.
Disclosure of utility model
The utility model aims to provide a fan vibration-proof bearing and a shaft thereof, which are used for solving the technical problem that the stability is weakened while the axial stress of the existing deep groove ball bearing is enhanced.
The embodiment of the utility model is realized by the following technical scheme:
The utility model provides a fan vibration-proof bearing, includes that the outside is equipped with the inner circle of outer channel, the inboard outer lane and the steel ball that are equipped with the inner channel, outer channel and inner channel include the main channel and locate the secondary channel of main channel both sides, the main channel is used for radially atress, the secondary channel is used for axially atress.
By adopting the technical scheme, the secondary channel is arranged on the side surface of the main channel, when the axial stress of the bearing reaches a certain limit, the steel ball is extruded into the secondary channel from the main channel, and the secondary channel can effectively bear the axial stress and does not influence the stability of the bearing; when the steel ball rolling device is normally used, the height difference exists between the main channel and the secondary channel, so that the steel ball can be effectively prevented from easily sliding into the secondary channel during normal rotation, and the influence of the secondary channel on the rolling stability of the steel ball is reduced.
Preferably, the curvature radius of the main channel and the secondary channel is equal to the radius of the steel ball, the curvature centers of the main channel of the outer channel and the inner channel are coincident, and the curvature centers of the secondary channel of the outer channel (15) and the inner channel (14) are coincident.
By adopting the technical scheme, the curvature radius of the main channel and the secondary channel is equal to the radius of the steel ball, and the circle centers of the outer channels and the inner channels of the inner ring and the outer ring are overlapped, so that the steel ball is fully attached to the main channel or the secondary channel when the main channel or the secondary channel rolls, and the rotation stability of the bearing is enhanced.
Preferably, the curvature center of the main channel and the curvature center of the secondary channel are in the same horizontal plane.
By adopting the technical scheme, when axial stress is ensured, the direction of the inner ring and the outer ring after stress decomposition is in the horizontal direction, so that the inner ring is prevented from shaking relative to the outer ring due to the axial stress, and the fan is prevented from vibrating.
Preferably, the device further comprises an axial table arranged on the outer side of the secondary channel and protruding, and the secondary channel extends to the top end of the axial table.
By adopting the technical scheme, when the secondary channel is axially stressed, the convex axial table plays a supporting role on the secondary channel and bears the axial stress.
The fan vibration-proof shaft comprises bearings, oil seals and couplings which are sequentially arranged on two sides of the two groups of bearings, wherein one group of the couplings is connected with a motor, and the other group of the couplings is in transmission connection with an impeller.
By adopting the technical scheme, the bearing is adopted, so that the vibration of the fan is effectively prevented, and the oil seal and the coupler ensure the safe and stable rotation of the fan shaft
Preferably, the shaft coupling shaft connected with the impeller is connected with an impeller shaft, and the impeller is arranged on the outer side of the impeller shaft.
The technical scheme of the embodiment of the utility model has at least the following advantages and beneficial effects:
1. according to the utility model, the secondary channel is arranged, when the axial stress of the bearing reaches a certain limit, the steel ball is extruded into the secondary channel from the main channel, and the secondary channel can effectively bear the axial stress and has no influence on the stability of the bearing;
2. When the steel ball rolling device is normally used, the height difference exists between the main channel and the secondary channel, so that the steel ball can be effectively prevented from easily sliding into the secondary channel during normal rotation, and the influence of the secondary channel on the rolling stability of the steel ball is reduced;
3. The direction of the inner ring and the outer ring after being stressed and decomposed is in the horizontal direction, so that the inner ring is prevented from shaking relative to the outer ring due to axial stress, and the fan is prevented from vibrating.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic cross-sectional view of a vibration isolation shaft of a fan according to embodiment 1 of the present utility model;
Fig. 2 is a schematic cross-sectional view of a fan vibration-proof bearing according to embodiment 1 of the present utility model;
fig. 3 is a schematic cross-sectional structure of an inner ring and an outer ring of a vibration-proof bearing for a fan according to embodiment 1 of the present utility model;
Fig. 4 is a schematic axial stress structure diagram of a fan vibration-proof bearing provided in embodiment 1 of the present utility model;
Fig. 5 is a schematic axial stress structure diagram of a fan vibration-proof bearing provided in embodiment 2 of the present utility model;
Icon: 1-bearing, 11-outer ring, 12-inner ring, 13-steel ball, 14-inner channel, 15-outer channel, 16-main channel, 17-secondary channel, 18-axial table, 2-coupling, 3-oil seal and 4-impeller shaft.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present utility model, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate an azimuth or a positional relationship based on that shown in the drawings, or an azimuth or a positional relationship in which a product of the application is conventionally put in use, it is merely for convenience of describing the present utility model and simplifying the description, and it is not indicated or implied that the referred device or element must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model.
In the description of the present utility model, it should also be noted that, unless explicitly stated and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Example 1
The vibration-proof bearing 1 for a fan comprises an inner ring 12, an outer ring 11 and steel balls 13, wherein the outer ring 12 is provided with an outer channel 15, the inner ring 11 is provided with an inner channel 14, the outer channel 15 and the inner channel 14 comprise a main channel 16 and secondary channels 17, the secondary channels 17 are arranged on two sides of the main channel 16, the main channel 16 is used for being stressed in the radial direction, and the secondary channels 17 are used for being stressed in the axial direction.
By adopting the technical scheme, the secondary channel 17 is arranged on the side surface of the main channel 16, when the axial stress of the bearing 1 reaches a certain speed limit, the steel ball 13 is extruded into the secondary channel 17 from the main channel 16, and the secondary channel 17 can effectively bear the axial stress and does not influence the stability of the bearing 1; in normal use, the height difference exists between the main channel 16 and the secondary channel 17, so that the steel ball 13 can be effectively prevented from easily sliding into the secondary channel 17 in normal rotation, and the influence of the secondary channel 17 on the rolling stability of the steel ball 13 is reduced.
In this embodiment, the radii of curvature of the main channel 16 and the secondary channel 17 are equal to the radii of the steel balls 13, the centers of curvature of the main channel 16 of the outer channel 15 and the inner channel 14 coincide, and the centers of curvature of the secondary channel 17 of the outer channel (15) and the inner channel (14) coincide.
By adopting the technical scheme, the curvature radius of the main channel 16 and the secondary channel 17 is equal to the radius of the steel ball 13, and the circle centers of the outer channel 15 and the inner channel 14 of the inner ring 12 and the outer ring 11 are coincident, so that the steel ball 13 is fully attached to the main channel 16 or the secondary channel 17 when the main channel 16 or the secondary channel 17 rolls, and the rotation stability of the bearing 1 is enhanced.
In this embodiment, the center of curvature of the main channel 16 and the center of curvature of the secondary channel 17 are in the same horizontal plane.
By adopting the technical scheme, when axial stress is ensured, the direction of the inner ring 12 and the outer ring 11 after stress decomposition is in the horizontal direction, so that the inner ring 12 is prevented from shaking relative to the outer ring 11 due to the axial stress, and the vibration of the fan is caused.
In this embodiment, the axial stage 18 is further disposed at the outer side of the secondary channel 17 and protrudes, and the secondary channel 17 extends to the top end of the axial stage 18.
By adopting the technical scheme, when the secondary channel 17 is axially stressed, the convex axial table 18 plays a supporting role on the secondary channel 17 and bears the axial stress.
The fan vibration-proof shaft comprises bearings 1, oil seals 3 and couplers 2 which are sequentially arranged on two sides of the two groups of bearings 1, wherein one group of couplers 2 is connected with a motor in a shaft mode, and the other group of couplers 2 is connected with an impeller in a transmission mode.
By adopting the technical scheme, the bearing 1 is adopted, so that the fan vibration is effectively prevented, and the oil seal 3 and the coupler 2 ensure that the fan shaft safely and stably rotates
In this embodiment, the shaft coupling 2 connected with the impeller is connected with the impeller shaft 4, and the impeller is arranged outside the impeller shaft 4.
In this embodiment, as shown in fig. 4, when the inner ring 12 of the bearing 1 is subjected to an axial force to the left or the outer ring 11 is subjected to an axial force to the right, the axial force exceeds a certain limit, the steel ball 13 slides to an adjacent sub-channel 17, specifically, the steel ball 13 slides to the sub-channel 17 on the right side of the inner ring 12, the sub-channel 17 on the left side of the outer ring 11, and the sub-channel 17 supports the steel ball 13 in the axial direction.
Example 2
The present embodiment differs from embodiment 1 only in that in this embodiment, when the inner race 12 of the bearing 1 is subjected to an axial force to the right or the outer race 11 is subjected to an axial force to the left as shown in fig. 5, the axial force exceeds a certain limit, the steel ball 13 slides to the adjacent sub-channel 17, specifically, the steel ball 13 slides to the sub-channel 17 on the left side of the inner race 12, the sub-channel 17 on the right side of the outer race 11, and the sub-channel 17 supports the steel ball 13 in its axial direction.
The above is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (6)
1. The utility model provides a fan vibration-proof bearing, includes inner circle (12) that the outside is equipped with outer channel (15), the inboard outer lane (11) and steel ball (13) that are equipped with inner channel (14), its characterized in that: the outer channel (15) and the inner channel (14) comprise a main channel (16) and secondary channels (17) arranged on two sides of the main channel (16), the main channel (16) is used for being stressed in the radial direction, and the secondary channels (17) are used for being stressed in the axial direction.
2. The fan vibration isolation bearing of claim 1, wherein: the curvature radius of the main channel (16) and the secondary channel (17) is equal to the radius of the steel ball (13), the curvature circle centers of the main channel (16) of the outer channel (15) and the inner channel (14) are coincident, and the curvature circle centers of the secondary channel (17) of the outer channel (15) and the inner channel (14) are coincident.
3. A fan vibration isolation bearing according to claim 1 or 2, wherein: the curvature center of the main channel (16) and the curvature center of the secondary channel (17) are in the same horizontal plane.
4. A fan vibration isolation bearing according to claim 1 or 2, wherein: the device also comprises an axial table (18) which is arranged outside the secondary channel (17) and protrudes, and the secondary channel (17) extends to the top end of the axial table (18).
5. A fan anti-vibration shaft comprising two sets of bearings (1) according to any one of claims 1-4 connected, characterized in that: the motor is characterized by further comprising oil seals (3) and couplers (2) which are sequentially arranged on two sides of the two groups of bearings (1), one group of the couplers (2) is connected with a motor through a shaft, and the other group of the couplers (2) is connected with an impeller through transmission.
6. The vibration-proof shaft of a blower according to claim 5, wherein: and a group of shaft couplings (2) are connected with an impeller shaft (4) through shafts, and the impellers are arranged on the outer sides of the impeller shaft (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323206923.6U CN221120671U (en) | 2023-11-24 | 2023-11-24 | Vibration-proof bearing of fan and shaft thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323206923.6U CN221120671U (en) | 2023-11-24 | 2023-11-24 | Vibration-proof bearing of fan and shaft thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221120671U true CN221120671U (en) | 2024-06-11 |
Family
ID=91367375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323206923.6U Active CN221120671U (en) | 2023-11-24 | 2023-11-24 | Vibration-proof bearing of fan and shaft thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221120671U (en) |
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2023
- 2023-11-24 CN CN202323206923.6U patent/CN221120671U/en active Active
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