CN102717665A - Hub oil storage system - Google Patents
Hub oil storage system Download PDFInfo
- Publication number
- CN102717665A CN102717665A CN2012101973555A CN201210197355A CN102717665A CN 102717665 A CN102717665 A CN 102717665A CN 2012101973555 A CN2012101973555 A CN 2012101973555A CN 201210197355 A CN201210197355 A CN 201210197355A CN 102717665 A CN102717665 A CN 102717665A
- Authority
- CN
- China
- Prior art keywords
- bearing
- wheel hub
- storage system
- oil storage
- face
- 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.)
- Granted
Links
- 238000003860 storage Methods 0.000 title claims abstract description 29
- 239000004519 grease Substances 0.000 claims abstract description 42
- 239000003351 stiffener Substances 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims description 3
- 238000005461 lubrication Methods 0.000 claims description 3
- 230000001050 lubricating effect Effects 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 5
- 229910052799 carbon Inorganic materials 0.000 abstract description 4
- 239000012141 concentrate Substances 0.000 description 3
- 239000000314 lubricant Substances 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 3
- 239000010425 asbestos Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052895 riebeckite Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 210000001138 tear Anatomy 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
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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
- F16C33/66—Special parts or details in view of lubrication
- F16C33/6603—Special parts or details in view of lubrication with grease as lubricant
- F16C33/6607—Retaining the grease in or near the bearing
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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
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
- F16C19/34—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load
- F16C19/36—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers
- F16C19/364—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with a single row of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone
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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
- F16C19/00—Bearings with rolling contact, for exclusively rotary movement
- F16C19/54—Systems consisting of a plurality of bearings with rolling friction
- F16C19/546—Systems with spaced apart rolling bearings including at least one angular contact bearing
- F16C19/547—Systems with spaced apart rolling bearings including at least one angular contact bearing with two angular contact rolling bearings
- F16C19/548—Systems with spaced apart rolling bearings including at least one angular contact bearing with two angular contact rolling bearings in O-arrangement
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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
- F16C2326/00—Articles relating to transporting
- F16C2326/01—Parts of vehicles in general
- F16C2326/02—Wheel hubs or castors
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention discloses a hub oil storage system which comprises an axle head and a hub. An inner bearing and an outer bearing are mounted between the axle head and the hub. Areas for mounting the inner bearing and the outer bearing are bearing chambers, and a hub chamber is between the two bearing chambers. The outer side of the inner bearing is provided with a hub oil seal, and the outer side of the outer bearing is provided with an oil retaining ring. Lubricating grease is further stored in the hub for lubricating the inner bearing and the outer bearing. A middle sleeve is arranged in the hub and is connected with outer rings of the inner bearing and the outer bearing. The lubricating grease is stored in the bearing chambers. The middle sleeve is sleeved on a hub inner chamber between the inner bearing and the outer bearing, and the oil retaining ring is mounted on the outer side of the outer bearing, so that the lubricating grease is gathered on the inner bearing and the outer bearing, usage amount of the lubricating grease is reduced, utilization rate of the lubricating grease is increased, pollution is reduced, low-carbon environment-friendly effect is achieved, lubricating effect is evident, friction resistance is reduced, wear is relieved, and the bearings are more durable.
Description
Technical field
The present invention relates to the oil storage system technical field, more particularly, relate to the wheel hub oil storage system on a kind of trailer axle.
Background technology
Along with going deep into of market economy, road haulage has had significant progress, and the range of use of common trailer is more and more wider.Trailer car shaft is the servo-actuated axletree, is bearing vehicle weight and cargo load, and is used for the support tire rotation; It mainly comprises axis body, wheel hub, brake wheel, brake shoe assembly, reaches camshaft assembly; Axis body is divided into the spindle nose two large divisions at central siphon and two ends, and wheel hub, brake drum assembly are assemblied on the spindle nose at axis body two ends, is used for carrying out wheel and braking; The brake shoe assembly is installed in the brake wheel; Its brake facing is processed by the asbestos less friction environment-friendly materials, and interior outer bearing is installed between spindle nose and wheel hub, and installs and fixes through axis head nut.Bearing can bear radial weight and axle tree makes it can only realize rotating, and bearing must have grease, and purpose is to reduce bearing internal friction and wearing and tearing, prevents to burn sticking.The part that contacts with each other at the lasso, rolling body and the retainer that constitute bearing prevents metallic contact, reduces friction, weares and teares; The rolling fatigue life of bearing, in rotation, the rolling touch face is lubricated good, then prolongs.On the contrary, oil viscosity is low, and the grease film thickness is bad, then shortens.In the prior art, the oil storage system in the wheel hub is with between neck bearing and the outer bearing, and the oil storage inner chamber between wheel hub and the spindle nose fills up grease to satisfy the demand of axletree work, and the grease amount that wheel hub is adorned will be very big.For example every axletree of the two macro-axis of FP need be adorned 1300～1540g grease, and every axletree of FN size axle need be adorned 870～960g grease.The grease amount that different axletrees is adorned is different; Store oil amount in the oil storage inner chamber still is on the high side, and most of grease is in the wheel hub chamber but on the whole; Property is relatively poor because grease flows; Even during the axletree high speed revolution, the grease in the wheel hub chamber can not get in the bearing lubricated, causes grease to use waste.
Summary of the invention
The object of the invention provides the wheel hub oil storage system of the degree of utilization of a kind of fuel-economizing, raising grease in order to overcome the deficiency that above-mentioned prior art exists.
The present invention program is following: a kind of wheel hub oil storage system, comprise axletree spindle nose, wheel hub, and inside and outside bearing is installed between spindle nose and wheel hub; In the zone of inside and outside bearing installation is bearing bore; Be the wheel hub chamber between the two bearings chamber, be provided with hub oil seal, be provided with oil seal washer in the outside of said outer bearing in the outside of neck bearing; In wheel hub, also storing grease uses to supply with inside and outside bearing lubrication; In said wheel hub chamber, be provided with intermediate sleeve, said intermediate sleeve connects the outer ring of inside and outside bearing, and said grease is stored in the said bearing bore.
Said indent platform is provided with interior base frame, and said outer recessed platform is provided with outer base frame.
Said indent flat-bed end face is resisted against on the end face of outer ring of neck bearing.
Said outer recessed flat-bed end face is resisted against on the end face of outer ring of outer bearing.
The outer wall of said body is provided with a plurality of pillar stiffeners.
Said oil seal washer is for for disk-like structure, and said oil seal washer is provided with chassis portion and ring platform, and said chassis portion is provided with inner ring.
The end face of the outer ring of said ring platform and said outer bearing against, the end face of said ring platform and the inwall of wheel hub against.
Both sides through at said oil seal washer are provided with axis head nut.
The present invention compared with prior art, its beneficial effect is:
Wheel hub oil storage system of the present invention utilize neck bearing and outer bearing between the wheel hub inner chamber put intermediate sleeve; Oil seal washer is installed in the outside at outer bearing; Make grease can concentrate on the position of neck bearing and outer bearing like this, thereby reduce the use amount of grease, improve the degree of utilization of grease; Pollute thereby reduce, realize low-carbon environment-friendly; Lubricant effect is remarkable, has reduced friction drag, slows down wearing and tearing, thereby makes bearing more durable.
Description of drawings
Fig. 1 is the structural representation of existing wheel hub oil storage system;
Fig. 2 is the structural representation of wheel hub oil storage system of the present invention;
Fig. 3 is the structural representation of the intermediate sleeve of wheel hub oil storage system of the present invention;
Fig. 4 is the structural representation of the oil seal washer of wheel hub oil storage system of the present invention;
The specific embodiment
Below pass through the specific embodiment, and combine accompanying drawing that the present invention is described further.
As shown in Figure 1, on the existing trailer axle, grease 8 major parts that are used for the inside and outside bearing lubrication of axletree are stored in the wheel hub chamber between wheel hub and spindle nose, even during the axletree high speed revolution, the grease the wheel hub chamber in can not get in the bearing and lubricate.
Like Fig. 2,3, shown in 4, the present invention discloses a kind of wheel hub oil storage system.Trailer car shaft is the servo-actuated axletree, is bearing vehicle weight and cargo load, and is used for the support tire rotation; It mainly comprises axis body, wheel hub 1, brake wheel, brake shoe assembly, reaches camshaft assembly; Axis body is divided into spindle nose 2 two large divisions at central siphon and two ends, and wheel hub 1, brake drum assembly are assemblied on the spindle nose 2 at axis body two ends, are used for carrying out wheel and braking; Brake shoe assembly 2 is installed in the brake wheel, and its brake facing is processed by the asbestos less friction environment-friendly materials.Wheel hub is connected through inside and outside bearing with spindle nose, and by being divided into two bearing bores and a wheel hub chamber between wheel hub inner chamber and spindle nose outer wall, interior outer bearing is installed on the bearing bore respectively.1 of spindle nose 2 and wheel hub are equipped with hub oil seal, gear ring, neck bearing 3, outer bearing 4, axis head nut 7, hub oil seal be installed in neck bearing 3 the inboard, be provided with intermediate sleeve 5 between neck bearing 3 and the outer bearing 4, the outside of outer bearing 4 is provided with oil seal washer 6.Inside and outside bearing is a conical bearing, is made up of outer ring, inner ring and roller.
Like Fig. 1, shown in 2, intermediate sleeve 5 is a tubular structure, and intermediate sleeve 5 comprises body 55, and the outer wall of body 55 is provided with a plurality of pillar stiffeners 56, and pillar stiffener 56 makes the structure of intermediate sleeve 5 more firm, improves its manufacturability simultaneously.The both sides of body are provided with indent platform 51 and outer recessed platform 52.Indent platform 51 is provided with interior base frame 53, and outer recessed platform 52 is provided with outer base frame 54.The inner chamber of intermediate sleeve 5 on spindle nose 2, the cycle surface of the end face of indent platform 51 and neck bearing 3 against, the cycle surface of the end face of outer recessed platform 52 and outer bearing 4 against.
Like Fig. 1, shown in 3, oil seal washer 6 is a disk-like structure, and oil seal washer 6 is provided with chassis portion 61 and ring platform 62; Chassis portion 61 is provided with inner ring 63; Inner ring 63 is enclosed within on the spindle nose 2, is provided with axis head nut 7 through the both sides at oil seal washer 6, thus the fixing position of outer bearing 4 and oil seal washer 6.The end face of ring platform 62 and the outer ring of outer bearing 4 against, the end face of ring platform 62 and the inwall of wheel hub 1 against.
As shown in Figure 1, the oil storage system of wheel hub is that the inner ring of neck bearing 3 is fixed on the step 21 of spindle nose 2, and the outer ring of neck bearing 3 is resisted against the first spacing 11 of wheel hub 1, and the end face of the indent platform 51 of intermediate sleeve 5 is resisted against on the outer ring of neck bearing 3 simultaneously.Interior base frame 53 through intermediate sleeve 5 can store 3 uses of grease 8 supply neck bearings in the concentrated area, can not cause leaking of grease 8.The surface of the inner ring of outer bearing 4 and spindle nose 2 against; The outer ring of outer bearing 4 is resisted against second spacing 12 of wheel hub 1; Simultaneously the end face of the outer recessed platform 52 of intermediate sleeve 5 is resisted against on the inboard end face in the outer ring of outer bearing 4; The ring platform 62 of oil seal washer 6 and outer bearing 4 the outside, outer ring end face against, the outer recessed platform 52 through intermediate sleeve 5 and the ring platform 62 of oil seal washer 6 can the concentrated area store grease 8 to be supplied with outer bearings 4 and uses, and can not cause leaking of grease 8.Grease 8 can concentrate on the position of neck bearing 3 and outer bearing 4, thereby reduces the use amount of grease 8, improves the degree of utilization of grease 8, pollutes thereby reduce, and realizes low-carbon environment-friendly; Lubricant effect is remarkable, has reduced friction drag, slows down wearing and tearing, thereby makes bearing more durable.
Wheel hub oil storage system of the present invention, at 2 need 520～600g of axletree grease of the two macro-axis of FP, outer bearing 4 needs fatten 140 ± 10g, and neck bearing 3 needs fatten 140 ± 10g, and average every axletree 2 is saved about 860g grease 8.At 2 need 480～560g of axletree grease 8 of FN size axle, 4 110 ± 10g of outer bearing, 3 140 ± 10g of neck bearing, average every axletree 2 is saved about 395g grease.No matter during fabrication, still using, during maintenance, all significantly having reduced the use amount of grease 8 it is about 50% that wheel hub oil storage system of the present invention makes in the wheel hub 1 grease 8 save,, effectively reduce and pollute, and realized the new product of environmental protection low-carbon (LC).Wheel hub oil storage system of the present invention concentrates on the installation position of bearing grease; The lubricated amount of the reality of its grease 8 Duos 100% than the oil quantity on the existing spindle nose bearing arrangement; The degree of utilization of grease 8 has had large increase, and lubricant effect is more remarkable, has reduced friction drag; Slow down wearing and tearing, make bearing more durable.Through the production process measuring and calculating, every axletree 2 fuel-economizing 0.75kg by normal volume ability fuel-economizing in year 375t, significantly reduce low blowdown, and the consumption reduction effect is considerable.Through the use measuring and calculating, each trailer maintenance fuel-economizing in 3 years amount is 11kg, has reduced the maintenance cost, and high lubricating effect promotes the smooth and easy and safety of driving.
Claims (9)
1. a wheel hub oil storage system comprises axletree spindle nose, wheel hub, and inside and outside bearing is installed between spindle nose and wheel hub; In the zone of inside and outside bearing installation is bearing bore; Be the wheel hub chamber between the two bearings chamber, be provided with hub oil seal, be provided with oil seal washer in the outside of said outer bearing in the outside of neck bearing; In wheel hub, also storing grease uses to supply with inside and outside bearing lubrication; It is characterized in that: in said wheel hub chamber, be provided with intermediate sleeve, said intermediate sleeve connects the outer ring of inside and outside bearing, and said grease is stored in the said bearing bore.
2. wheel hub oil storage system according to claim 1; It is characterized in that: said intermediate sleeve comprises body and the indent platform, the outer recessed platform that are provided with in said body both sides; Said indent flat-bed end face is resisted against on the neck bearing, and said outer recessed flat-bed end face is resisted against on the outer bearing.
3. wheel hub oil storage system according to claim 2 is characterized in that: said indent platform is provided with interior base frame, and said outer recessed platform is provided with outer base frame.
4. wheel hub oil storage system according to claim 3 is characterized in that: said indent flat-bed end face is resisted against on the end face of outer ring of neck bearing.
5. wheel hub oil storage system according to claim 4 is characterized in that: said outer recessed flat-bed end face is resisted against on the end face of outer ring of outer bearing.
6. wheel hub oil storage system according to claim 5 is characterized in that: the outer wall of said body is provided with a plurality of pillar stiffeners.
7. wheel hub oil storage system according to claim 6 is characterized in that: said oil seal washer is for for disk-like structure, and said oil seal washer is provided with chassis portion and ring platform, and said chassis portion is provided with inner ring.
8. wheel hub oil storage system according to claim 7 is characterized in that: the end face of the outer ring of said ring platform and said outer bearing against, the end face of said ring platform and the inwall of wheel hub against.
9. wheel hub oil storage system according to claim 8 is characterized in that: the both sides at said oil seal washer are provided with axis head nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210197355.5A CN102717665B (en) | 2012-06-14 | 2012-06-14 | Hub oil storage system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210197355.5A CN102717665B (en) | 2012-06-14 | 2012-06-14 | Hub oil storage system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102717665A true CN102717665A (en) | 2012-10-10 |
| CN102717665B CN102717665B (en) | 2015-05-20 |
Family
ID=46943593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210197355.5A Active CN102717665B (en) | 2012-06-14 | 2012-06-14 | Hub oil storage system |
Country Status (1)
| Country | Link |
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| CN (1) | CN102717665B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103697069A (en) * | 2013-12-19 | 2014-04-02 | 佛山市永力泰车轴有限公司 | Vehicle axle wheel hub system |
| CN105179489A (en) * | 2015-09-23 | 2015-12-23 | 安徽江淮汽车股份有限公司 | Mounting structure of rear axle hub oil baffle plate |
| CN108515811A (en) * | 2018-06-09 | 2018-09-11 | 山东浩信浩德精密机械有限公司 | Hub unit |
| CN109252479A (en) * | 2018-11-07 | 2019-01-22 | 珠海亿华电动车辆有限公司 | Wheel set, bicycle frame device and road sweeper |
| WO2025015504A1 (en) * | 2023-07-17 | 2025-01-23 | 舍弗勒技术股份两合公司 | Damper device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2611668A (en) * | 1950-02-10 | 1952-09-23 | Porter D Douglass | Motor vehicle front wheel lubricating device |
| US5762423A (en) * | 1995-07-14 | 1998-06-09 | Ntn Corporation | Bearing device, solid resin lubricating composition and porous oil-impregnated bearing |
| US6533363B1 (en) * | 2002-02-26 | 2003-03-18 | Meritor Heavy Vehicle Technology, Llc | Grease retainer for vehicle wheel hubs |
| DE102008036136A1 (en) * | 2008-08-01 | 2010-02-04 | Schaeffler Kg | Roller bearing for supporting axle or shaft against housing, has bearing rings rotatable opposite to each other, and dosing disk arranged to supply lubricant found in lubricant reservoir into bearing gap |
| CN201900939U (en) * | 2010-11-30 | 2011-07-20 | 青特集团有限公司 | Oil lubrication supporting bridge hub unit |
| CN102390222A (en) * | 2011-09-15 | 2012-03-28 | 东风德纳车桥有限公司 | Car wheel-hub inner cavity protecting device |
| CN202641259U (en) * | 2012-06-14 | 2013-01-02 | 广东富华工程机械制造有限公司 | Axle hub for trailer |
-
2012
- 2012-06-14 CN CN201210197355.5A patent/CN102717665B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2611668A (en) * | 1950-02-10 | 1952-09-23 | Porter D Douglass | Motor vehicle front wheel lubricating device |
| US5762423A (en) * | 1995-07-14 | 1998-06-09 | Ntn Corporation | Bearing device, solid resin lubricating composition and porous oil-impregnated bearing |
| US6533363B1 (en) * | 2002-02-26 | 2003-03-18 | Meritor Heavy Vehicle Technology, Llc | Grease retainer for vehicle wheel hubs |
| DE102008036136A1 (en) * | 2008-08-01 | 2010-02-04 | Schaeffler Kg | Roller bearing for supporting axle or shaft against housing, has bearing rings rotatable opposite to each other, and dosing disk arranged to supply lubricant found in lubricant reservoir into bearing gap |
| CN201900939U (en) * | 2010-11-30 | 2011-07-20 | 青特集团有限公司 | Oil lubrication supporting bridge hub unit |
| CN102390222A (en) * | 2011-09-15 | 2012-03-28 | 东风德纳车桥有限公司 | Car wheel-hub inner cavity protecting device |
| CN202641259U (en) * | 2012-06-14 | 2013-01-02 | 广东富华工程机械制造有限公司 | Axle hub for trailer |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103697069A (en) * | 2013-12-19 | 2014-04-02 | 佛山市永力泰车轴有限公司 | Vehicle axle wheel hub system |
| CN105179489A (en) * | 2015-09-23 | 2015-12-23 | 安徽江淮汽车股份有限公司 | Mounting structure of rear axle hub oil baffle plate |
| CN105179489B (en) * | 2015-09-23 | 2017-07-28 | 安徽江淮汽车集团股份有限公司 | A kind of rear axle hub oil baffle plate mounting structure |
| CN108515811A (en) * | 2018-06-09 | 2018-09-11 | 山东浩信浩德精密机械有限公司 | Hub unit |
| CN109252479A (en) * | 2018-11-07 | 2019-01-22 | 珠海亿华电动车辆有限公司 | Wheel set, bicycle frame device and road sweeper |
| CN109252479B (en) * | 2018-11-07 | 2023-12-05 | 珠海亿华电动车辆有限公司 | Wheel assembly, frame device and sweeping vehicle |
| WO2025015504A1 (en) * | 2023-07-17 | 2025-01-23 | 舍弗勒技术股份两合公司 | Damper device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102717665B (en) | 2015-05-20 |
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Effective date of registration: 20160725 Address after: 529200 Taishan City, Jiangmen Province, No. 1 North Avenue, No. three, Patentee after: Guangdong Fuhua Heavy Manufacturing Co., Ltd. Address before: 528323, three, Huanglian Industrial Road, Leliu Town, Shunde District, Guangdong, Foshan Patentee before: Guangdong Fuwa Engineering Manufacturing Co., Ltd. |