CN106763523B - Speed reduction hub bearing - Google Patents
Speed reduction hub bearing Download PDFInfo
- Publication number
- CN106763523B CN106763523B CN201610997762.2A CN201610997762A CN106763523B CN 106763523 B CN106763523 B CN 106763523B CN 201610997762 A CN201610997762 A CN 201610997762A CN 106763523 B CN106763523 B CN 106763523B
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- Prior art keywords
- outer ring
- inner ring
- hub
- hub bearing
- planetary
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H1/00—Toothed gearings for conveying rotary motion
- F16H1/28—Toothed gearings for conveying rotary motion with gears having orbital motion
- F16H1/32—Toothed gearings for conveying rotary motion with gears having orbital motion in which the central axis of the gearing lies inside the periphery of an orbital gear
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/30—Parts of ball or roller bearings
- F16C33/58—Raceways; Race rings
- F16C33/583—Details of specific parts of races
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/021—Shaft support structures, e.g. partition walls, bearing eyes, casing walls or covers with bearings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
Abstract
The invention discloses a speed reduction hub bearing, which comprises an outer ring, an inner ring and a speed changer arranged in the inner circle space of the inner ring, wherein the inner ring or the outer ring is in transmission connection with a hub; the power output end of the speed changer is in transmission connection with the inner ring or the outer ring in transmission connection with the hub, and the hub bearing makes full use of the space in the inner ring of the bearing, so that the axial size of the speed reduction hub is effectively shortened, and the structural compactness of the hub is greatly improved.
Description
Technical Field
The invention relates to the field of planetary reducers, in particular to a speed reducing hub bearing.
Background
The hub bearing is an important part for a wheel part of a motor vehicle or an electric vehicle, and mainly plays a role in bearing the weight of a vehicle body and providing accurate guidance for the rotation of the hub.
Therefore, in order to solve the above problems, there is a need for a speed reduction hub bearing in which a transmission is disposed in an inner ring of a hub bearing, and the hub bearing makes full use of a space in the inner ring of the bearing, thereby effectively shortening an axial dimension of the speed reduction hub and greatly improving a structural compactness of the hub.
Disclosure of Invention
In view of the above, the present invention is to overcome the defects in the prior art, and provide a speed reduction hub bearing with a transmission disposed in an inner ring of the hub bearing, wherein the hub bearing makes full use of the space in the inner ring of the bearing, thereby greatly improving the structural compactness of the hub.
The invention discloses a speed reduction hub bearing, which comprises an outer ring, an inner ring and a speed changer arranged in the inner circle space of the inner ring, wherein the inner ring or the outer ring is in transmission connection with a hub; the power output end of the speed changer is in transmission connection with an inner ring or an outer ring in transmission connection with the hub;
further, the speed changer is a planetary speed reducer, the power input end of the planetary speed reducer is used for receiving power input, and the power output end of the planetary speed reducer is in transmission connection with an inner ring or an outer ring in transmission connection with the hub;
furthermore, one end of the inner ring and one end of the outer ring are closed to form a disc-shaped structure, and the inner ring and the outer ring are matched with each other to form a closed space for accommodating the transmission;
furthermore, a planet carrier of the planetary speed reducer is used as a power output end of the planetary speed reducer, and an inner ring or an outer ring which is in transmission connection with a hub is in transmission connection with the planet carrier;
further, an outer ring of the planetary reducer is fixedly connected with an outer ring of the hub bearing; the inner ring of the hub bearing is in transmission connection with the hub, and the inner ring and the planet carrier of the planetary reducer are integrally formed;
furthermore, the outer ring of the planetary reducer is used as the power output end of the planetary reducer, and the inner ring or the outer ring in transmission connection with the hub is in transmission connection with the outer ring of the planetary reducer;
furthermore, the outer ring of the planetary reducer is used as the inner ring of the hub bearing, and the planet carrier is fixedly connected with the outer ring of the hub bearing;
the planetary reducer further comprises a second planet carrier which is arranged close to the end face of the outer ring of the hub bearing, the second planet carrier is rotatably supported on the end face of the outer ring of the hub bearing, a sun gear shaft for receiving power input extends out of a sun gear of the planetary reducer along the axial direction, and the sun gear shaft penetrates through the end face of the outer ring of the hub bearing and is supported on a bearing seat formed by the second planet carrier and the end face of the inner ring of the hub bearing through a bearing;
furthermore, a sun wheel shaft for receiving power input extends out of a sun wheel of the planetary reducer along the axial direction, bearing seats are formed on the end surfaces of an outer ring and an inner ring of the hub bearing, and the sun wheel shaft penetrates through the end surface of the outer ring of the hub bearing and is rotatably supported on the bearing seats;
furthermore, the outer ring of the planetary reducer is directly fixed to the outer ring of the hub bearing, a sensor for collecting the torsional deformation of the planetary reducer is arranged on the outer ring of the planetary reducer, and a ring groove for reducing the torsional rigidity of the planetary reducer is formed in the outer ring of the planetary reducer along the circumferential direction;
or the outer ring of the planetary reducer is connected with the outer ring of the hub bearing through a thin-wall metal cylinder sleeved on the outer ring, and a sensor used for collecting the torsional deformation of the thin-wall metal cylinder is arranged on the thin-wall metal cylinder.
The invention has the beneficial effects that: the speed reduction hub bearing has the advantages that the speed changer is arranged in the inner ring of the bearing, the inner ring or the outer ring of the hub bearing can directly form a hub or is in transmission connection with the hub, the driving force of a vehicle is transmitted to the inner ring or the outer ring of the hub bearing in transmission connection with the hub after the transmission ratio is changed through the speed changer (a speed increaser or a speed reducer), and then the hub is driven to rotate.
Drawings
The invention is further described below with reference to the following figures and examples:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of the present invention using a thin-walled metal cylinder;
FIG. 3 is a schematic diagram of the structure of the present invention using the outer ring output of the planetary reducer.
Detailed Description
FIG. 1 is a schematic structural view of the present invention; as shown in the figure, the speed reduction hub bearing of the embodiment includes an outer ring 1, an inner ring 8 and a transmission arranged in an inner circular space of the inner ring 8, wherein the inner ring 8 or the outer ring 1 is in transmission connection with a hub; the power output end of the speed changer is in transmission connection with an inner ring 8 or an outer ring 1 which is in transmission connection with a hub, the speed changer can be a speed reducer, a speed increaser or other devices capable of changing transmission ratio, the speed reducer is arranged in the bearing inner ring 8 of the speed reducer hub bearing of the embodiment, the inner ring 8 of the hub bearing is in transmission connection with the hub (the transmission connection comprises connection by adopting a connecting piece or an integrated forming way), a connecting disc for connecting with a steering knuckle is integrally formed on the outer ring 1 of the hub bearing, a connecting hole 9 is arranged on the connecting disc, when the speed reducer hub bearing works, the outer ring 1 of the hub bearing is relatively fixed with a frame, a driving device (an engine or a motor) of a vehicle inputs power to the power input end of the speed reducer, and transmits the power to the inner ring 8 of the hub bearing after speed reduction and distance increase through the speed reducer so as to drive the hub to rotate, this speed reduction wheel hub bearing can bear automobile body weight and provide the guide for wheel hub's rotation, and meanwhile, this speed reduction wheel hub bearing can also slow down the power of inputing to wheel hub and increase the distance to make full use of the inside space of wheel hub bearing, shortened speed reduction wheel hub's axial dimensions, improved wheel hub, especially electronic wheel hub's compact structure nature greatly.
In this embodiment, the transmission is a planetary reducer, a power input end of the planetary reducer is used for receiving power input, a power output end of the planetary reducer is in transmission connection with an inner ring 8 or an outer ring 1 in transmission connection with the hub, the planetary reducer can adopt an existing planetary gear reducer, a planetary traction transmission reducer or a small-tooth-difference planetary reducer, and the like, and the transmission ratio of the planetary reducer is high (especially the small-tooth-difference planetary reducer), and meanwhile, the planetary reducer can be compactly arranged in an inner circular space of the hub bearing due to the structural characteristics of the planetary reducer.
In this embodiment, the inner ring 8 and the outer ring 1 have one end closed to form a disc structure, and the inner ring 8 and the outer ring 1 are mutually matched to form a closed space for accommodating the transmission, in this embodiment, one end of the inner ring 8 is integrally formed into a disc body, the disc body is connected with a stud and is in transmission connection with a hub through the stud, one end of the outer ring 1 is provided with an end cover 3 through a screw, the inner ring 8 and the outer ring 1 are matched in a manner that the open ends are opposite, and the outer circle of the inner ring 8 and the inner circle of the outer ring 1 are sealed through a sealing element, so that the inner ring 8 and the outer ring 1 are matched to form a sealed space for accommodating the transmission.
In this embodiment, the planet carrier of the planetary gear reducer is used as the power output end of the planetary gear reducer, and the inner ring 8 or the outer ring 1 which is in transmission connection with the hub is in transmission connection with the planet carrier, as shown in fig. 1 and fig. 2, the sun gear 4 of the planetary gear reducer is used as the input end, and the planet carrier of the planetary gear reducer is used as the output end, at this time, the inner ring 8 of the hub bearing is directly used as the planet carrier of the planetary gear reducer, so that the inner ring 8 or the outer ring 1 of the hub bearing is simultaneously used as the planet carrier of the planetary gear reducer, thereby achieving the purpose of one-piece multiple use and simplifying the structure of the whole hub bearing.
In the embodiment, the outer ring 6 of the planetary reducer is fixedly connected with the outer ring 1 of the hub bearing; the inner ring 8 of the hub bearing is in driving connection with the hub, and the inner ring 8 is integrated with the planet carrier of the planetary reducer, the inner ring 8 of the hub bearing is in driving connection with the hub, the planet carrier of the planetary reducer is used as an output end, the planet carrier is integrated with the inner ring 8 of the hub bearing, and the power input from the sun gear 4 of the planetary reducer is transmitted to the inner ring 8 of the hub bearing and drives the hub to rotate by the inner ring 8.
In this embodiment, the outer ring 6 of the planetary reducer is used as the power output end of the planetary reducer, and the inner ring 8 or the outer ring 1 in transmission connection with the hub is in transmission connection with the outer ring 6 of the planetary reducer, at this time, the outer ring 6 of the planetary reducer is used as the power output end, as shown in fig. 3, the sun gear 4 of the planetary reducer is used as the input end, the outer ring 6 of the planetary reducer is used as the output end to directly drive the inner ring 8 of the hub bearing in transmission connection with the hub to rotate, the planetary carrier of the planetary reducer and the outer ring 1 of the hub bearing are relatively fixed, the planetary gear shaft 7 can be directly fixed on the end surface of the outer ring 1 of the hub bearing, and the end surface of the outer ring 1 of the hub bearing is used as the planetary carrier, so as to simplify the structure.
In this embodiment, the outer ring 6 of the planetary gear reducer is used as the inner ring 8 of the hub bearing, as shown in fig. 3, the inner circle of the inner ring 8 of the hub bearing can directly and integrally form the gear ring 2 meshed with the planet gear of the planetary gear reducer, and at this time, the inner ring 8 of the hub bearing can be directly used as the outer ring 6 of the planetary gear reducer, so that the compactness of the structure is improved.
In this embodiment, the planet carrier is fixedly connected to the outer ring 1 of the hub bearing, and when the outer ring 6 of the planetary gear set serves as the power output end, the sun gear 4 serves as the power input end, and the planet carrier is fixed relative to the frame, so that the planet carrier can be fixed to the outer ring 1 of the hub bearing fixed to the knuckle by using a connecting member, or the end surface of the outer ring 1 of the hub bearing can be directly used as the planet carrier to be matched with the planet shaft 7 of the planetary gear set.
In this embodiment, the planetary reducer further includes a second planet carrier disposed near an end surface of the hub bearing outer ring 1, the second planet carrier is rotatably supported on the end surface of the hub bearing outer ring 1, a sun gear 4 shaft for receiving power input extends from a sun gear 4 of the planetary reducer along an axial direction, and the sun gear 4 shaft passes through the end surface of the hub bearing outer ring 1 and is supported on a bearing seat formed by the second planet carrier and an end surface of the hub bearing inner ring 8 through a bearing.
In this embodiment, a sun gear 4 shaft for receiving power input extends from a sun gear 4 of the planetary reducer in an axial direction, bearing seats are formed on end surfaces of an outer ring 1 and an inner ring 8 of the hub bearing, the sun gear 4 shaft passes through the end surface of the outer ring 1 of the hub bearing and is rotatably supported on the bearing seats, and the bearing seats are formed by sinking of the outer ring 1 and the inner ring 8 of the bearing.
In this embodiment, the outer ring of the planetary reduction gear is directly fixed to the outer ring 1 of the hub bearing, the outer ring 6 of the planetary reduction gear is provided with a sensor for collecting the torsional deformation amount of the outer ring, as shown in fig. 1, the outer ring 6 of the planetary reduction gear is provided with an annular groove 11 for reducing the torsional rigidity of the outer ring along the circumferential direction, in this embodiment, the wall thickness of the middle part of the outer ring 6 of the planetary reduction gear is shrunk to form the annular groove 11, the annular groove 11 is arranged on the inner circle of the outer ring 6, the sensor is arranged on the outer circle corresponding to the annular groove 11 on the outer ring 6 of the planetary reduction gear, the torsional rigidity of the outer ring 6 can be reduced by the annular groove 11 on the outer ring 6, and the accuracy of torque detection is favorably improved.
As shown in fig. 2, the outer ring 6 of the planetary reducer may be further connected to the outer ring 1 of the hub bearing through a thin-walled metal tube 5 that is externally sleeved on the outer ring 6, the thin-walled metal tube 5 is provided with a sensor for acquiring a torsional deformation amount of the thin-walled metal tube, the sensor may be an existing strain gauge or the like, and a magnitude of a torque output from the hub may be obtained by detecting the torsional deformation amount of the outer ring 6 and combining with a torsional rigidity of the outer ring 6, in this embodiment, the planetary reducer is connected to the outer ring 1 of the hub bearing through the thin-walled metal tube 5, the sensor is provided on the thin-walled metal tube 5, a cross section of the thin-walled metal tube 5 is Z-shaped, two ends of the thin-walled metal tube are respectively fastened to an end face of the outer ring 6 and an inner end face of the end cap 3 fixed to the bearing outer ring 1 through bolts or directly fixed to the bearing outer ring 1, because the torsional rigidity of the thin-walled metal tube 5 is low, the strain gauge is arranged on the thin-wall metal cylinder 5, so that the torque detection precision is improved.
In this embodiment, two rows of rollers are arranged between the inner ring 8 and the outer ring 1 of the hub bearing, the inner ring 8 of the hub bearing comprises a large inner ring 8 and a small outer ring 10 which is sleeved and fixed on the outer circle of the large inner ring 8 through a rolling process, raceways of the two rows of rollers are respectively and correspondingly arranged on the outer circular surfaces of the large inner ring 8 and the small outer ring 10, the small outer ring 10 is sleeved and fixed on the outer circle of the large inner ring 8 through the rolling process, the small outer ring 10 is self-locked by adopting a rolling technology, and an axial load is applied to the hub shaft end in the rolling process to deform the hub shaft end to fix the small outer ring 10.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (2)
1. A speed reduction hub bearing characterized in that: the transmission comprises an outer ring, an inner ring and a transmission arranged in an inner circle space of the inner ring, wherein the inner ring is in transmission connection with a hub; the power output end of the speed changer is in transmission connection with the inner ring in transmission connection with the hub; the speed changer is a planetary speed reducer, the power input end of the planetary speed reducer is used for receiving power input, and the power output end of the planetary speed reducer is in transmission connection with an inner ring in transmission connection with the hub; one end of the inner ring and one end of the outer ring are closed to form a disc-shaped structure, and the inner ring and the outer ring are matched with each other to form a closed space for accommodating the transmission; the planet carrier of the planetary speed reducer is used as the power output end of the planetary speed reducer, and the inner ring in transmission connection with the hub is in transmission connection with the planet carrier; two rows of rollers are arranged between an inner ring and an outer ring of the hub bearing, and the inner ring of the hub bearing comprises a large inner ring and a small outer ring which is sleeved outside and fixed on the excircle of the large inner ring through a rolling process; the outer ring of the planetary reducer is fixedly connected with the outer ring of the hub bearing; the inner ring of the hub bearing is in transmission connection with the hub, and the inner ring and the planet carrier of the planetary reducer are integrally formed; the planetary reducer further comprises a second planet carrier which is arranged close to the end face of the outer ring of the hub bearing, the second planet carrier is rotatably supported on the end face of the outer ring of the hub bearing, a sun gear shaft for receiving power input extends out of a sun gear of the planetary reducer along the axial direction, and the sun gear shaft penetrates through the end face of the outer ring of the hub bearing and is supported on a bearing seat formed by the second planet carrier and the end face of the inner ring of the hub bearing through a bearing.
2. The reduction hub bearing of claim 1, wherein: the outer ring of the planetary reducer is directly fixed on the outer ring of the hub bearing, a sensor for collecting the torsional deformation of the planetary reducer is arranged on the outer ring of the planetary reducer, and a ring groove for reducing the torsional rigidity of the planetary reducer is arranged on the outer ring of the planetary reducer along the circumferential direction;
or the outer ring of the planetary reducer is connected with the outer ring of the hub bearing through a thin-wall metal cylinder sleeved on the outer ring, and a sensor used for collecting the torsional deformation of the thin-wall metal cylinder is arranged on the thin-wall metal cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610997762.2A CN106763523B (en) | 2016-11-11 | 2016-11-11 | Speed reduction hub bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610997762.2A CN106763523B (en) | 2016-11-11 | 2016-11-11 | Speed reduction hub bearing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106763523A CN106763523A (en) | 2017-05-31 |
| CN106763523B true CN106763523B (en) | 2021-11-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610997762.2A Active CN106763523B (en) | 2016-11-11 | 2016-11-11 | Speed reduction hub bearing |
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| Country | Link |
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| CN (1) | CN106763523B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109538704A (en) * | 2018-11-23 | 2019-03-29 | 重庆大学 | Planet Traction Drive bearing type integration deceleration wheel hub |
| CN111664177A (en) * | 2020-04-21 | 2020-09-15 | 重庆大学 | Integrated planetary reduction bearing for hub motor |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101247968A (en) * | 2005-07-19 | 2008-08-20 | Ntn株式会社 | Motor-driven wheel driving apparatus |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2194996Y (en) * | 1993-05-11 | 1995-04-19 | 陈恢松 | Speed reduction bearing |
| JP2005231428A (en) * | 2004-02-18 | 2005-09-02 | Ntn Corp | Electric wheel driving device |
| JP2007216930A (en) * | 2006-02-20 | 2007-08-30 | Ntn Corp | Electric-powered car |
| CN201461868U (en) * | 2009-08-27 | 2010-05-12 | 三一重机有限公司 | Wheel redactor for planetary gear |
| EP2740625B1 (en) * | 2011-08-02 | 2018-04-04 | NSK Ltd. | Hub bearing, speed reduction mechanism, and in-wheel motor |
| CN202946620U (en) * | 2012-12-07 | 2013-05-22 | 覃志明 | Hub reduction gear driven by oil motor |
| CN204828599U (en) * | 2015-06-09 | 2015-12-02 | 孙美娜 | Integrated planet wheel decelerator's biserial angular contact ball bearing |
| CN205639286U (en) * | 2016-03-04 | 2016-10-12 | 重庆大学 | Planet pulls transmission speed reduction bearing |
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2016
- 2016-11-11 CN CN201610997762.2A patent/CN106763523B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101247968A (en) * | 2005-07-19 | 2008-08-20 | Ntn株式会社 | Motor-driven wheel driving apparatus |
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| CN106763523A (en) | 2017-05-31 |
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