CN103195823B - Hub - Google Patents
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- Publication number
- CN103195823B CN103195823B CN201310134186.5A CN201310134186A CN103195823B CN 103195823 B CN103195823 B CN 103195823B CN 201310134186 A CN201310134186 A CN 201310134186A CN 103195823 B CN103195823 B CN 103195823B
- Authority
- CN
- China
- Prior art keywords
- roller
- bearing
- sealing ring
- helical groove
- transmission shaft
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000007789 sealing Methods 0.000 claims abstract description 55
- 238000005096 rolling process Methods 0.000 claims abstract description 26
- 230000005540 biological transmission Effects 0.000 claims abstract description 25
- 125000006850 spacer group Chemical group 0.000 claims abstract description 12
- 239000000314 lubricant Substances 0.000 claims description 18
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 230000001050 lubricating effect Effects 0.000 abstract description 26
- 239000004519 grease Substances 0.000 abstract description 22
- 238000012423 maintenance Methods 0.000 abstract description 9
- 230000002035 prolonged effect Effects 0.000 abstract 2
- 238000005299 abrasion Methods 0.000 abstract 1
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 238000005461 lubrication Methods 0.000 description 10
- 230000033001 locomotion Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
Landscapes
- Rolling Contact Bearings (AREA)
Abstract
The invention discloses a hub. The hub comprises a transmission shaft and a hub body, wherein two bearing chambers are oppositely arranged between the hub body and the transmission shaft; rolling bearing components and sealing elements are respectively arranged in the two bearing chambers; an annular lubricating medium circulation clearance is formed between the hub body and the transmission shaft, and is communicated with the two bearing chambers; a spacer bush is arranged between the bearing components in the two bearing chambers; spiral ribs are arranged on the spacer bush; first spiral grooves are formed in the hub body in the lubricating medium circulation clearance; and the spiral ribs are separated from the first spiral grooves, and are same with the first spiral grooves in rotating direction. With a simple structure, lubricating grease circularly flows between the bearing chambers, the lubricating conditions of a bearing are improved, and the abrasion loss of a sealing ring is greatly reduced by decreasing the relative speed between the sealing ring and a contact piece under same working conditions, so that the service life of the sealing ring is greatly prolonged, the maintenance cycle of the hub is prolonged, and the hub is even maintenance-free within the whole design life.
Description
Technical field
The present invention relates to vehicle component technical field, particularly relate to a kind of wheel hub.
Background technique
At present, what the lubricating system of rolling bearing was conventional has oil lubrication and grease lubrication two kinds, and oil lubrication mobility is relatively good, high lubricating effect, but needs to be equipped with corresponding oil pocket, pressure pump, circulation loop, cooling unit etc., is applicable to the lubrication of high-speed motion pair; Grease lubrication is relatively easily implemented, and only needs grease up in lubricating cavity, is applicable to the lubrication of low-speed motion pair.
Vehicle wheel hub adopts grease lubrication usually, but there is a defect in grease lubrication, external force is not had to promote its circulation, self poor fluidity, such as, bearing has been mounted opposite between hub body and transmission shaft, just define two bearing chambers, traditional lubricating system is difference repack with grease in two bearing chambers, lubricating grease in these two bearing chambers can not circulate mutually, due to alignment error or the accuracy of manufacturing of bearing own, some bearing wears can be caused serious, the impurity that wearing and tearing produce just mixes with lubricating grease, form local pollution, and the lubricating grease of other positions remains intact, contaminated lubricating grease lubricates this bearing for a long time, this just forms lubrication failure and causes bearing damage, from causing, the maintenance period of wheel hub is short.
Summary of the invention
Technical problem to be solved by this invention is: provide a kind of wheel hub, to solve the technical problem that lubricant medium poor fluidity causes wheel hub maintenance period short.
For solving the problems of the technologies described above, technological scheme of the present invention is: wheel hub, comprise transmission shaft and be sheathed on the hub body on described transmission shaft, described hub body is relative with between transmission shaft is provided with two bearings room, rolling bearing assembly and seal element is equipped with in bearing chamber described in two, the lubricant medium passage gaps of annular is provided with between described hub body and transmission shaft, described lubricant medium passage gaps is communicated with bearing chamber described in two, spacer is provided with between bearing unit in bearing chamber described in two, described spacer is provided with spiral ridge, the described hub body being positioned at described lubricant medium passage gaps is provided with the first helical groove, described spiral ridge is separated with described first helical groove and rotation direction is identical.
Improve as one, described rolling bearing assembly comprises roller bearing, described roller bearing comprises inner ring, outer ring, roller and retainer, the constraint of described roller to be installed on described retainer and between described inner ring and outer ring, the outer circumferential face of described roller is provided with the second helical groove, described second helical groove extends to the other end of described roller from one end of described roller, in described roller, at least be divided into two-part, the rotation direction of the helical groove of part roller is left-handed, and the rotation direction of the helical groove of another part roller is dextrorotation.
Preferably, the roller described in the second left-turn spiral groove and the roller with dextrorotation second helical groove are arranged alternately.
Improve as one, described seal element comprises the small sealing ring and big sealing ring that are set in together, and described small sealing ring is provided with a change can rotated with the retainer of rolling bearing between big sealing ring.
Preferably, described change and described retainer are set to one.
Preferably, the sealing lip of described small sealing ring contacts with the inner peripheral surface of described change, and the sealing lip of described big sealing ring contacts with the outer circumferential face of described change.
Preferably, the sealing lip of described small sealing ring contacts with the outer circumferential face of described transmission shaft, and the sealing lip of described big sealing ring contacts with the outer circumferential face of described change.
After have employed technique scheme, the invention has the beneficial effects as follows: owing to being provided with the annular lubricant medium passage gaps being communicated with two bearing chambers between hub body with transmission shaft, spacer is provided with between bearing unit in bearing chamber described in two, described spacer is provided with spiral ridge, the described hub body being positioned at described lubricant medium passage gaps is provided with the first helical groove, described spiral ridge is separated with described first helical groove and rotation direction is identical, hub body is from rotating under power traction, hub body and transmission shaft are formed relatively rotate, at annular lubricant medium passage gaps and the indoor repack with grease of two bearings, because lubricating grease is a kind of semifluid, there is certain sticky glutinous characteristic there is again certain flow characteristic, if hub body rotates forward i.e. the first helical groove and rotates forward, outer lubricating grease then near the first helical groove has the trend of the opposite direction movement to the first helical groove precession direction while rotating in company with hub body, and after the internal layer lubricating grease of spiral ridge rotates, move along precession direction under the guiding of the spiral ridge of spacer, lubricating grease is formed between two bearings room circulate, improve lubricating condition, extend the maintenance period of wheel hub.
Because the outer circumferential face of described roller bearing roller is provided with the second helical groove, described second helical groove extends to the other end of described roller from one end of described roller, in described roller, at least be divided into two-part, the rotation direction of the helical groove of part roller is left-handed, the rotation direction of the helical groove of another part roller is dextrorotation, make bearing in use, utilize the rotation of roller self, the lubricating grease of same bearing chamber bearing chamber side is transported to opposite side, and form circulating of lubricating grease, make lubrication more even.
Because described seal element comprises the small sealing ring and big sealing ring be set in together, described small sealing ring is provided with a change can rotated with the retainer of rolling bearing between big sealing ring, the sealing lip of small sealing ring contacts with the outer circumferential face of the inner peripheral surface of change or transmission shaft, the sealing lip of big sealing ring contacts with the outer circumferential face of change, according to known principle, the rotational velocity of retainer is substantially close to the half of housing washer speed, that is, about the relative velocity of big sealing ring and small sealing ring sealing surface has all dropped to original half, and for the wearing and tearing of seal ring, speed is faster, wear and tear faster, about relative velocity reduces to original half, under same working condition, greatly, the wear extent of small sealing ring all greatly reduces, thus substantially increase the working life of seal ring, extend the maintenance period of wheel hub, even within the whole projected life of wheel hub, reach non-maintaining.
Accompanying drawing explanation
Fig. 1 is the structural representation of the embodiment of the present invention;
Fig. 2 is the structural representation of roller bearing;
Fig. 3 is the working principle reference drawing of rolling element when doing pure rolling;
In figure: 1, hub body, 2, transmission shaft, 3, roller bearing, 31, retainer, 32, outer ring, 33, inner ring, 34, roller, the 35, second helical groove, the 4, first seal, the 5, second seal, 6, rotor, 7, inner sleeve, 8, overcoat, 9, spiral ridge, the 10, first helical groove.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further described.
As shown in Figure 1, a kind of wheel hub, the hub body 1 comprising transmission shaft 2 and be sheathed on transmission shaft 2, relatively between hub body 1 with transmission shaft 2 be provided with two bearings room, two bearings indoor are equipped with rolling bearing assembly and seal element, the lubricant medium passage gaps of annular is provided with between hub body 1 and transmission shaft 2, lubricant medium passage gaps is communicated with two bearings room, spacer is provided with between the bearing unit of two bearings indoor, spacer is provided with spiral ridge 9, the hub body 1 being positioned at lubricant medium passage gaps is provided with the first helical groove 10, spiral ridge 9 is identical with the first helical groove 10 rotation direction, and both do not engage and are in separated state.Hub body 1 rotates under power traction, hub body 1 and transmission shaft 2 are formed relatively rotate, if hub body 1 rotates forward i.e. the first helical groove 10 and rotates forward, the opposite direction of outer lubricating grease to the first helical groove 10 precession direction while rotating in company with hub body 1 then near the first helical groove 10 moves, and after the internal layer lubricating grease of spiral ridge 9 rotates, move along precession direction under the guiding of spiral ridge 9, lubricant medium is formed between two bearings room circulate, improve lubricating condition, extend the maintenance period of wheel hub.The pitch of spiral ridge 9 and the pitch of the first helical groove 10 do not limit at this, and the head number of spiral ridge 9 and the head number of the first helical groove 10 also do not limit at this, and those skilled in the art can according to the space reasonable Arrangement of lubricant medium passage gaps.
As shown in Figure 2, bearing unit comprises roller bearing 3, roller 34 is provided with between the inner ring 33 of roller bearing 3 and outer ring 32, described roller 34 is constrained on retainer 31, the outer circumferential face of roller 34 is provided with the second helical groove 35, second helical groove 35 extends to roller 34 the other end from one end of roller 34.Roller bearing 3 comprises tapered roller bearing, roller bearing and selfaligning roller bearing etc., is not specifically limited at this.The head number of the second helical groove 35 on the pitch of the second helical groove 35 and each roller 34 does not all limit, and those skilled in the art can according to the diameter reasonable Arrangement of roller 34.
When the roller with left-handed second helical groove and the roller with dextrorotation second helical groove are arranged alternately, the lubricant medium of roller bearing 3 both sides can be made to circulate mutually, form the flowing of more uniform bidirectional circulating, the pressure in bearing both sides sealing chamber is consistent substantially.Certainly, at some without the need to considering the occasion that bearing pressure at both sides balances, also can establish the helical groove of dextrorotation on a part of roller, another part roller establishes left-handed helical groove, even a part of roller does not establish helical groove, to obtain better Economy.
Bearing unit also comprises ball bearing, and ball bearing is all positioned at lubricant medium passage gaps side, and ball bearing is preferably deep groove ball bearing.
Spacer comprises the inner sleeve 7 and overcoat 8 that are set in together, and spiral ridge 9 is arranged on overcoat 8, and inner sleeve 7 relies between two roller bearings 3, and overcoat 8 then relies between two ball bearings, all also serves positioning action.
Seal element comprises the small sealing ring 4 and big sealing ring 5 that are set in together, a change 6 can rotated with the retainer 31 of roller bearing 3 is provided with between small sealing ring 4 with big sealing ring 5, preferably, change 6 is integrally manufactured with retainer 31, can certainly split manufacture fit together again, as long as both maintenances are fixedly connected with state.The sealing lip of small sealing ring 4 contacts with the inner peripheral surface of change 6, and the sealing lip of big sealing ring 5 contacts with the outer circumferential face of change 6.In order to reduce the wearing and tearing of small sealing ring 4 further, the outer circumferential face of the sealing lip of small sealing ring 4 with transmission shaft 2 can be contacted, effect can be better.
For rolling bearing, under the condition of pure rolling, if inner ring is fixed, outer ring rotating, under the drive of outer ring, rolling element can produce around the rotation of own axes and the revolution around transmission shaft 2 axle center, because rolling element constraint is arranged on retainer, so the revolution speed of rolling element is the speed that retainer rotates.
As everyone knows, as shown in Figure 3, when at the uniform velocity promoting a rolling element with a plate frictionally and moving on a fixed pan along straight line, if rolling element and plate are tangential on p point, rolling element and fixed pan are tangential on q point, under the condition of pure rolling, the absolute velocity of rolling element q point is that the absolute velocity of zero, p point equals plate travelling speed V
1, so V
p autobiography+ V
p moves=V
1, V
q autobiography+ V
q moves=0, and for same rolling element, V
p moves=V
q moves=V
mobile, V
p autobiography=-V
q autobiography, therefore V
mobile=V
1/ 2, that is, the travelling speed of rolling element is 1/2 of plate.
According to above-mentioned principle, in the present embodiment, outer ring is equivalent to above-mentioned plate, and inner ring is equivalent to above-mentioned fixed pan, and roller is equivalent to above-mentioned rolling element, and the revolution speed of roller is the rotational velocity of speed that retainer rotates also i.e. change 6.Consider the factors such as the pitch diameter that roller diameter, roller distribute, the rotational velocity of change 6 is substantially close to the half of rolling bearing 3 outer ring speed.That is, about the relative velocity of big sealing ring 5 and small sealing ring 5 sealing surface has all dropped to original half.For the wearing and tearing of seal ring, speed is faster, wear and tear faster, about relative velocity reduces to original half, under same working condition, the wear extent of large and small seal ring all greatly reduces, thus substantially increases the working life of seal ring, extend the maintenance period of wheel hub, even within the whole projected life of wheel hub, reach non-maintaining.
The seal ring that the present embodiment discloses can be the seal element such as outside framework oil seal and non-outside framework oil seal.
In sum, wheel hub in use, on the one hand, rely on the own rotation of hub body, the lubricating grease not only between two bearings room can circulate, and the lubricating grease of corresponding bearing both sides in same bearing chamber also can realize circulating, lubricating uniform, substantially improve the lubricating condition of bearing, avoid concentrated wear and seriously cause the too fast inefficacy of lubricant medium, extend the working life of bearing unit.On the other hand, by reducing the relative velocity of seal ring and contact, under same working condition, the wear extent of seal ring greatly reduces, thus substantially increase the working life of seal ring, extend the maintenance period of wheel hub, even within the whole projected life of wheel hub, reach non-maintaining.
The present invention is not limited to above-mentioned concrete mode of execution, and those of ordinary skill in the art is from above-mentioned design, and without performing creative labour, done all conversion, all drop within protection scope of the present invention.
Claims (7)
1. wheel hub, comprise transmission shaft and be sheathed on the hub body on described transmission shaft, described hub body is relative with between transmission shaft is provided with two bearings room, rolling bearing assembly and seal element is equipped with in bearing chamber described in two, it is characterized in that: the lubricant medium passage gaps being provided with annular between described hub body and transmission shaft, described lubricant medium passage gaps is communicated with bearing chamber described in two, spacer is provided with between bearing unit in bearing chamber described in two, described spacer is provided with spiral ridge, the described hub body being positioned at described lubricant medium passage gaps is provided with the first helical groove, described spiral ridge is separated with described first helical groove and rotation direction is identical.
2. wheel hub according to claim 1, it is characterized in that: described rolling bearing assembly comprises roller bearing, described roller bearing comprises inner ring, outer ring, roller and retainer, the constraint of described roller to be installed on described retainer and between described inner ring and outer ring, the outer circumferential face of described roller is provided with the second helical groove, described second helical groove extends to the other end of described roller from one end of described roller, in described roller, at least be divided into two-part, the rotation direction of the helical groove of part roller is left-handed, the rotation direction of the helical groove of another part roller is dextrorotation.
3. wheel hub according to claim 2, is characterized in that: described in there is left-handed second helical groove roller be arranged alternately with the roller with dextrorotation second helical groove.
4. the wheel hub according to any one of claims 1 to 3, it is characterized in that: described seal element comprises the small sealing ring and big sealing ring that are set in together, described small sealing ring is provided with a change can rotated with the retainer of rolling bearing between big sealing ring.
5. wheel hub according to claim 4, is characterized in that: described change and described retainer are set to one.
6. wheel hub according to claim 5, is characterized in that: the sealing lip of described small sealing ring contacts with the inner peripheral surface of described change, and the sealing lip of described big sealing ring contacts with the outer circumferential face of described change.
7. wheel hub according to claim 5, is characterized in that: the sealing lip of described small sealing ring contacts with the outer circumferential face of described transmission shaft, and the sealing lip of described big sealing ring contacts with the outer circumferential face of described change.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310134186.5A CN103195823B (en) | 2013-04-17 | 2013-04-17 | Hub |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310134186.5A CN103195823B (en) | 2013-04-17 | 2013-04-17 | Hub |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103195823A CN103195823A (en) | 2013-07-10 |
| CN103195823B true CN103195823B (en) | 2015-06-10 |
Family
ID=48718559
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310134186.5A Active CN103195823B (en) | 2013-04-17 | 2013-04-17 | Hub |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103195823B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105523279A (en) * | 2014-09-30 | 2016-04-27 | 斯凯孚公司 | Package set for vehicle wheel hub assembly |
| CN110835902A (en) * | 2018-08-15 | 2020-02-25 | 上海勘测设计研究院有限公司 | Simple supporting wheel with lubricating oil passage |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5499902A (en) * | 1991-12-04 | 1996-03-19 | Environamics Corporation | Environmentally safe pump including seal |
| DE29608800U1 (en) * | 1996-05-15 | 1996-08-08 | Dbt Gmbh | Sprocket assembly with bearing lubrication for chain drives, especially for chain-drawn coal planes |
| US5591020A (en) * | 1994-05-19 | 1997-01-07 | Environamics Corporation | Pump oil mister |
| US5904427A (en) * | 1996-11-04 | 1999-05-18 | Stemco Inc | Unitized wheel hub and bearing assembly with lubricant distributing vanes |
| US6227713B1 (en) * | 1997-03-11 | 2001-05-08 | Skf Gmbh | Tapered roller bearing for working rolls of roll strands |
| CN102767400A (en) * | 2011-05-04 | 2012-11-07 | 霍尼韦尔国际公司 | Bearing assembly with damping features |
| CN203239772U (en) * | 2013-04-17 | 2013-10-16 | 吕宝军 | Hub |
-
2013
- 2013-04-17 CN CN201310134186.5A patent/CN103195823B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5499902A (en) * | 1991-12-04 | 1996-03-19 | Environamics Corporation | Environmentally safe pump including seal |
| US5591020A (en) * | 1994-05-19 | 1997-01-07 | Environamics Corporation | Pump oil mister |
| DE29608800U1 (en) * | 1996-05-15 | 1996-08-08 | Dbt Gmbh | Sprocket assembly with bearing lubrication for chain drives, especially for chain-drawn coal planes |
| US5904427A (en) * | 1996-11-04 | 1999-05-18 | Stemco Inc | Unitized wheel hub and bearing assembly with lubricant distributing vanes |
| US6227713B1 (en) * | 1997-03-11 | 2001-05-08 | Skf Gmbh | Tapered roller bearing for working rolls of roll strands |
| CN102767400A (en) * | 2011-05-04 | 2012-11-07 | 霍尼韦尔国际公司 | Bearing assembly with damping features |
| CN203239772U (en) * | 2013-04-17 | 2013-10-16 | 吕宝军 | Hub |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103195823A (en) | 2013-07-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20171117 Address after: 261307 Changyi City, Shandong Province, Changyi city hoxin Industrial Park Patentee after: SHANDONG HAOXIN MACHINERY Co.,Ltd. Address before: 261300 Shandong, Weifang City, Changyi City, Changyi City, Wenchang South Road, No. 1 Garden, Jin Xiaona Patentee before: Lv Baojun |
|
| TR01 | Transfer of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: hub Effective date of registration: 20211022 Granted publication date: 20150610 Pledgee: China Construction Bank Corporation Changyi sub branch Pledgor: SHANDONG HAOXIN MACHINERY Co.,Ltd. Registration number: Y2021980011149 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20230103 Granted publication date: 20150610 Pledgee: China Construction Bank Corporation Changyi sub branch Pledgor: SHANDONG HAOXIN MACHINERY Co.,Ltd. Registration number: Y2021980011149 |
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| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 261307 south head of Weizi Town, Changyi City, Weifang City, Shandong Province Patentee after: Shandong Haoxin Machinery Co.,Ltd. Country or region after: China Address before: 261307 Changyi City, Shandong Province, Changyi city hoxin Industrial Park Patentee before: SHANDONG HAOXIN MACHINERY Co.,Ltd. Country or region before: China |