CN201439820U - Mobile machinery self-friction combined type axle wheel hub oil seal assembly - Google Patents
Mobile machinery self-friction combined type axle wheel hub oil seal assembly Download PDFInfo
- Publication number
- CN201439820U CN201439820U CN2009201281628U CN200920128162U CN201439820U CN 201439820 U CN201439820 U CN 201439820U CN 2009201281628 U CN2009201281628 U CN 2009201281628U CN 200920128162 U CN200920128162 U CN 200920128162U CN 201439820 U CN201439820 U CN 201439820U
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- Prior art keywords
- oil seal
- axle sleeve
- rubs
- connecting ring
- seal washer
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- Expired - Fee Related
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
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Abstract
The utility model discloses a mobile machinery self-friction combined type axle wheel hub oil seal assembly, comprising an outer connecting ring, a main oil seal ring, a secondary oil seal ring and a pair friction shaft sleeve; the outer connecting ring with revolved body structure and the pair friction shaft sleeve are respectively arranged at the outer side and the inner side of the main oil seal ring and the secondary oil seal ring, and the outer cylindrical surfaces of the main oil seal ring and the secondary oil seal ring and the inner cylindrical surface of the outer connecting ring are tightly contacted without relative movement, and the ring-shaped lips of the main oil seal ring and the secondary oil seal ring are contacted with the outer cylindrical surface of the pair friction shaft sleeve with relative movement. A static sealing structure of the pair friction shaft sleeve is arranged on the inner cylindrical surface of the pair friction shaft sleeve, a static sealing structure of the connecting ring is arranged on the outer cylindrical surface of the outer connecting ring. In the wheel hub oil seal assembly of the utility model, the size of the oil seal ring is shortened, the relative linear speed and abrasion of the oil seal ring and the pair friction shaft sleeve are reduced, and the service life of the oil seal ring can be effectively prolonged and the sealing reliability is enhanced; the metal parts with high precision are formed by punching, thereby greatly educing the material consumption and weight and reducing the oil consumption and waste gas exhaust of the finished automobile; in addition, the assembling times of a user can be reduced and the labor productivity is improved.
Description
Technical field
The utility model relates to a kind of vehicle, the employed hub oil seal assembly of commercial car vehicle bridge particularly, especially a kind of running mechanism self-rubbing composite type hub oil seal assembly for axle.
Background technique
Produce in the running mechanism of walking action in dependence power systems such as commerial vehicles, because working environment is more abominable, vehicle bridge is particularly driven the vehicle bridge hub oil seal higher requirement.In actual conditions, higher to the hub oil seal requirement of heavy load vehicle and engineering machinery etc., if the hub oil seal design is improper or adaptability is relatively poor, then the vehicle bridge hub oil seal is easy to produce oil leakage phenomenon, makes car load produce fault.
The hub oil seal of running mechanism such as load-carrying vehicle in the prior art, the hub oil seal of steyr vehicle bridge as shown in Figure 1, benz vehicle bridge or graceful vehicle bridge etc., be that CN201110378Y is described, name is called the disclosed hub oil seal structure of utility model patent of " the improved hub oil seal of axle assembly " perhaps as notification number, all be will sealing fluid oil seal washer be arranged in the annular gap between wheel hub inner cylindrical surface (or claim oil sealing box) and the spacer ring (or title) the axle sleeve that rubs, in the vehicle bridge of the load-carrying vehicle of after repeatedly press-fiting (generally need 4 times assemble), packing into.In addition, also there is following several problem in the hub oil seal of existing load-carrying vehicle:
1, oil seal washer (major and minor oil seal washer) all is arranged on the outside of spacer ring (to the axle sleeve that rubs), and its external diameter is direct and the wheel hub inner cylindrical surface closely cooperates, thereby causes the size of oil seal washer bigger, and the rubber material of consumption is more; Oil seal washer with to the relative linear velocity height of the axle sleeve that rubs, increased considerably power loss and heating and wearing and tearing, shortened the working life of oil seal washer.
2, major and minor oil seal washer, be that separately design is made separately, provide by different producers respectively, be difficult to form the tribology system design constituent elementss such as the axle sleeves that rubs; When vehicle bridge manufactory assembles, need repeatedly press-fit, the operating procedure complexity, and the ring packing lip (with the contact position to the axle sleeve that rubs) of oil seal washer is damaged.
3, existing the axle sleeve that rubs is generally processed by Cast Steel, the weight of self is big and price is high, has both wasted the weight that steel have also increased car load.
4, in the existing technology, a kind of oil sealing of specification is difficult to the cooperation installing space of the vehicle bridge wheel hub of adaptation different model, and is promptly poor to the versatility of different model vehicle bridge.
The model utility content
At the above-mentioned deficiency of existing vehicle bridge hub oil seal, the utility model provide a kind of oil seal washer size less and can reduce by the rubber material consumption that changes driving vehicle bridge that inside and outside union piece adapts to different model, oil seal washer, the life-span and the performance of oil seal washer further improve, all metalwork adopts punching press or sintering forms, oil seal assembly weight reduces greatly, the efficiency of assembling height, can be adapted to the running mechanism self-rubbing composite type hub oil seal assembly for axle of different model vehicle bridge.
Structure characteristic of the present utility model is: the running mechanism self-rubbing composite type hub oil seal assembly for axle is mainly by outer connecting ring, oil seal washer, form parts such as the axle sleeve that rubs, several axial pressure-bearing rings.Outer connecting ring is arranged on the outside of oil seal washer, and then in the inboard, the both is rotary structure to the axle sleeve that rubs.Connecting ring and be provided with at least one oil seal washer to rubbing between the axle sleeve outside, the external cylindrical surface of oil seal washer closely contacts with the inner cylindrical surface of outer connecting ring and does not produce relative movement, and the ring packing lip of oil seal washer inboard contacts with the external cylindrical surface to the axle sleeve that rubs but will produce relative movement and form motive sealing.On inner cylindrical surface, be provided with the axle sleeve static seal structure that rubs to the axle sleeve that rubs; On the external cylindrical surface of connecting ring, be provided with outer connecting ring static seal structure outside.
Further feature is: described oil seal washer comprises a main oil seal washer and a secondary oil seal washer, and main oil seal washer is in close sealed fluid inboard, and secondary oil seal washer is in the outside of main oil seal washer.
On the axial plane S of connecting ring, be provided with more than one axial pressure part outside, axially the axial end of pressure part is higher than the axial plane S of outer connecting ring.
Consider that oil seal washer is placed on the space of a relative closure, in order to increase radiating effect, at outer seal ring and axially between the axle sleeve, be provided with the fluid suction fitting, on the fluid suction fitting, be provided with some radially or the axial screw groove, with relative movement the face that rubs is formed a dynamic pressure pump, connecting ring is provided with fluid circulation radiation hole outside.
Outer connecting ring and to the axle sleeve that rubs all is stamping part or sintered part.
Described can be existing rubber oil sea circle to the axle sleeve static seal structure that rubs, and also can be arranged on the rubber-plastic sealing layer to the inner cylindrical surface of the axle sleeve that rubs.
Described to rubbing axle sleeve except an aforesaid overall structure, can also be by to rubbing axle sleeve main part and the axle sleeve connecting plate that rubs connected and composed; Described main oil seal washer and secondary oil seal washer are arranged on outer connecting ring and to rubbing between the axle sleeve main part, the axle sleeve static seal structure that rubs are arranged on the axle sleeve connecting plate that rubs.
The utility model running mechanism self-rubbing composite type hub oil seal assembly for axle with respect to prior art, has following advantage:
The size of 1, oil seal washer (perhaps major and minor oil seal washer) has been dwindled, and the material that oil seal washer consumes reduces; Oil seal washer with to the linear velocity and all corresponding minimizing of frictional loss of the axle sleeve that rubs, can effectively prolong the working life of oil seal washer.
2, the axle sleeve that rubs Cast Steel big by original own wt, that obtain through machining is changed into the high-precision part that impact briquetting or sintering obtain, its size reduces greatly, not only reduced original to the axle sleeve own wt that rubs, steel have been saved, also alleviate the weight of car load, had tangible economic benefit and social benefit.
3, with oil seal washer, constituent elementss such as the axle sleeve that rubs, outer connecting ring are combined into an integrated type hub oil seal assembly, the assembling that can reduce the user press-fits number of times, prevents that the seal lip of oil seal washer is damaged, and has reduced rate of fault, improve manufacturing efficiency, reduced cost of production.
4, the integral combined hub oil seal assembly of this kind; by with oil seal washer, the fixed size of the axle sleeve that rubs is become standard piece; only the outer connecting ring of need appropriate change reaches the size to the axle sleeve that rubs; just can be applicable in the vehicle bridge of multiple vehicle; form mass, large-scale production, raise labour productivity greatly.
Description of drawings
Fig. 1 is the vehicle hub oil sealing erection drawing of prior art;
Fig. 2 is the utility model combined type hub oil seal erection drawing;
Fig. 3 is second kind of example structure erection drawing of the utility model combined type hub oil seal;
Fig. 4 is the combined type oil seal structure figure of structure shown in Figure 3;
Fig. 5 is E place structure (the outer connecting ring static seal structure overlay) enlarged view of Fig. 4;
Fig. 6 is F place structure (to the axle sleeve static seal structure overlay that the rubs) enlarged view of Fig. 4;
Fig. 7 is that the circular radial cylindrical axes that adopts of the utility model is to spiral chute dynamic pressure pump critical component (part 8) sectional drawing;
Fig. 8 is the unfolded drawing of Fig. 7;
Fig. 9 is the third example structure erection drawing of the utility model combined type hub oil seal;
Figure 10 is the 4th a kind of example structure erection drawing of the utility model combined type hub oil seal;
Figure 11 is axial plane spiral chute dynamic pressure pump pump oil key component (part 8) structural drawing that the utility model adopts;
Figure 12 is the unfolded drawing of Figure 11.
Embodiment
As shown in the figure, the two-way rotary hub oil seal assembly of running mechanism self-rubbing composite type described in the utility model mainly comprises outer connecting ring 1, oil seal washer 2, to the axle sleeve 4 that rubs, to parts such as the axle sleeve static seal structure 5 that rubs, connecting ring static seal structures 6.Outer connecting ring 1 is arranged on the assembly outside, and the axle sleeve 4 that rubs is arranged on the inboard, all is rotary structure, all is stamping part or the sintered part (as metallic sintered products) that is obtained by the sheetmetal punching press; Connecting ring 1 and be provided with at least one oil seal washer 2 to rubbing between the axle sleeve 4 outside, oil seal washer 2 is rotary structure, the external cylindrical surface of oil seal washer 2 contacts with the inner cylindrical surface of outer connecting ring 1 to constitute the static seal face and (forms the closely static seal face of contact, do not produce relative movement), the interior annular seal lip of oil seal washer 2 contacts with external cylindrical surface to the axle sleeve 4 that rubs with the formation sealing surface (forming the motive sealing face that produces relative rotary motion) that rotatablely moves.According to the different behaviours in service and different seal requests of vehicle, oil seal washer 2 can have multiple structure: a kind ofly constitute (structure shown in Fig. 2,9) by single main oil seal washer 21; Another kind constitutes (structure shown in Fig. 3,4,10) by a main oil seal washer 21 and a secondary oil seal washer 22; The third is made of two main oil seal washers 21 and a secondary oil seal washer 22, and perhaps plural main oil seal washer 21 and more than one secondary oil seal washer 22 constitute (not illustrating among the figure).Major and minor oil seal washer can be that the skeleton rubber circle is arranged, and also can be exoskeletal rubber ring, or the seal ring of other types, as plastics or mechanical seal ring etc.Oil seal washer 2 shown in Fig. 3,4,10 comprises a main oil seal washer 21 and a secondary oil seal washer 22, main oil seal washer 21 is in the side (inboard) near fluid, contact with the lubricating oil in the vehicle bridge, play and prevent that mainly lubricating oil is from the main oil seal washer 21 of relative movement with to rubbing between the axle sleeve 4 to the effect of external leakage, secondary oil seal washer 22 is in the outside of main oil seal washer 21, mainly be dustproof effect, had the effect of auxiliary seal fluid simultaneously concurrently.The external cylindrical surface of main oil seal washer 21 and secondary oil seal washer 22 contacts with the inner cylindrical surface of outer connecting ring 1, do not produce relative movement each other, it is the static seal face, the interior annular seal lip of main oil seal washer 21 and secondary oil seal washer 22 contacts with external cylindrical surface to the axle sleeve 4 that rubs, will produce relative movement each other, be motive sealing face.On inner cylindrical surface to the axle sleeve 4 that rubs, be provided with the axle sleeve static seal structure 5 that rubs, it is a static seal, the slit of sealing to rubbing between the axle sleeve 4 connected vehicle bridge rotating shafts 11; To the axle sleeve static seal structure 5 that rubs can be have now, the rectangle of appropriate section shape, O type rubber oil sea circle, or be arranged on the suitable sealing layer on axle sleeve 4 inner cylindrical surfaces that rub, has the certain flexible application that is coated with through suitable processing mode, it is coated in forming sealing layer on axle sleeve 4 inner cylindrical surfaces that rub, thereby plays the effect (seeing shown in Figure 6) of static seal.On the external cylindrical surface of connecting ring 1, also be provided with connecting ring static seal structure 6 outside, the slit between running mechanism wheel hub 10 inner cylindrical surfaces that the external cylindrical surface of the outer connecting ring 1 of shutoff is in contact with it is a static seal structure.This connecting ring static seal structure 6 can be existing, the rectangle of appropriate section shape, O type rubber oil sea circle, or other sealing layers, has the certain flexible application that is coated with through suitable processing mode, it is coated on the external cylindrical surface of outer connecting ring 1 forms sealing layer, thereby play the effect (seeing shown in Figure 5) of static seal.
In order to prevent that combination oil seal of the present utility model was subjected to bigger axial rub and produces high temperature and even damage relevant surfaces in vehicle launch moment, be provided with a plurality of axial pressure parts 7 (on the axial plane S of concrete connecting ring 1 outside) outside on the connecting ring 1, axially the axial end of pressure part 7 is higher than the axial plane S of outer connecting ring 1, bears owing to the axial force of reasons such as assembling generation and frictional force etc.; Axially pressure part 7 roughly is the straw hat shape, axially the material of pressure part 7 is engineering plastics of easily being worn etc., so just can ablate automatically, prevent that effectively being subjected to bigger axial force (as axial installing force etc.) in the starting stage afterwards burns out relevant position because of friction-produced high temperature in the high slightly back of temperature.
Consider that oil seal washer 2 is placed on (comprising main oil seal washer 21 and secondary oil seal washer 22) space of a relative closure, especially relatively poor, the poor radiation of fluid flowability around the oil seal washer 2, in order to increase radiating effect, on the S plane of connecting ring, several fluid circulation oilholes 9 have been offered outside.In addition, in order to increase the circulation dynamics of fluid, outside in connecting ring 1 and the axial or radial space to the formation between the axle sleeve 4 that rubs, the vital part (parts) that is provided with spiral chute dynamic pressure pump is a fluid suction fitting 8, and spiral chute dynamic pressure pump both can be that the axial flow structure also can be the Radial Flow structure.
A kind of structure of fluid suction fitting 8 is the axle sleeve structure forms (shown in Fig. 2,3,4) that produce axial flow, in this case, that form the axial pump oil-gaps with fluid suction fitting 8 is ring-shaped cylinder face N to the axle sleeve 4 that rubs, and fluid suction fitting 8 constitutes spiral chute dynamic pressure pump with the ring-shaped cylinder face N to the axle sleeve 4 that rubs; The another kind of structure of fluid suction fitting 8 is to make fluid produce the planar spiral groove structural type (shown in Fig. 9,10,11) of Radial Flow, fluid suction fitting 8 is provided with some the planar spiral grooves 81 (as shown in figure 12) according to the positive and negative both direction arranged alternate of certain rule with the garden planar annular M on the axle sleeve 4 that rubs is constituted spiral chute dynamic pressure pump on fluid suction fitting 8.
Positive and negative spiral chute notch on the spiral chute 81 is not connect on working surface, guarantees that fluid that any direction pumps into is all greater than the fluid flow that pumps.Forward, the spiral chute that oppositely is arranged alternately 81 and relative movement to the axle sleeve 4 that rubs the face that rubs is formed a dynamic pressure pump, the axial end S on the connecting ring 1 is provided with several fluid circulation radiation holes 9 outside.When vehicle bridge is just changeed, the spiral chute 81 of first on the fluid suction fitting 8, third quadrant (or second, four-quadrant) produces pumping actions, around water pump is drawn into oil oil seal washer 2, when vehicle bridge counter-rotating (reversing), the spiral chute 81 of second on the fluid suction fitting 8, four-quadrant (or first, third quadrant) produces pumping actions, and fluid is drawn into around the oil seal washer 2; The fluid circulation radiation hole 9 of the fluid that sucks on outer connecting ring 1 flows out, and the fluid that forms convection current has been taken away the interior most of heat of oil seal assembly, has good heat-radiation effect; Guarantee that fluid can produce enough fluid and circulate under the effect of two relative movement faces, further lower the heating of oil seal washer.(shown in Fig. 7,8,11,12)
The fluid suction fitting 8 that produces axial flow is to have certain flexible rubber or working of plastics, has certain floatability; Design and when assembling, all should note controlling fluid suction fitting 8 and gap to rubbing between the axle sleeve 4, guarantee spiral chute 81 and relative movement to the formation dynamic pressure pump between the axle sleeve 4 that rubs.
Integrated type hub oil seal of the present utility model, outer connecting ring 1 external cylindrical surface matches with the inner cylindrical surface of running mechanism wheel hub 10 (realizing between the two static seal by connecting ring static seal structure 6), in the vehicle bridge rotating shafts 11 that the axle sleeve 4 that rubs is connected within it (by the axle sleeve static seal structure 5 that rubs being realized static seal between the two).
Shown in Fig. 9,10, in order to adapt to the vehicle bridge rotating shaft of different automobile types, the structure of the axle sleeve 4 that rubs is had multiple, to rubbing axle sleeve 4 except aforesaid overall structure, present embodiment to rub axle sleeve 4 by to rub axle sleeve main part 41 with the axle sleeve connecting plate 42 that rubs is connected and constitutes, firmly connect each other; Main oil seal washer 21 and secondary oil seal washer 22 are arranged on outer connecting ring 1 and to rubbing between the axle sleeve main part 41, the axle sleeve static seal structure 5 that rubs are arranged on the axle sleeve connecting plate 42 that rubs, and axle sleeve connecting plate 42 is connected with vehicle bridge rotating shaft 11 to rubbing.
Hub oil seal of the present utility model, according to the outer connecting ring 1 of designing requirement manufacturing stamping part with to behind the axle sleeve 4 that rubs, the oil seal washer 2 (main oil seal washer 21 and secondary oil seal washer 22) that is up to the standards is pressed into outer connecting ring 1 and to rubbing between the axle sleeve 4, set again behind the axle sleeve static seal structure 5 that rubs, connecting ring static seal structure 6 and the axial pressure part 7, as an integrated type sectional hub oil seal assembly, offer the user and use.
Running mechanism self-rubbing composite type hub oil seal assembly for axle described in the utility model not only is adapted to the commercial truck and the passenger vehicle of various tonnages, also is applicable to other running mechanisms such as wheel loader, engineering machinery, pavement construction machinery etc.
The running mechanism self-rubbing composite type hub oil seal assembly for axle that the utility model is touched upon is not only applicable to ransaxle, is adapted to carrying bogie, balance bridge yet.Be not only applicable to fluid-encapsulated medium, be applicable to seal grease yet.No matter be to advance or retreat, can both seal effectively.
It is pointed out that at last the utility model not only be suitable for outer connecting ring with oil seal washer rotate, to the axle sleeve that rubs with the fixing occasion of vehicle bridge, also be applicable to outer connecting ring occasion fixing with oil seal washer, that the axle sleeve that rubs is rotated.
Claims (10)
1. running mechanism self-rubbing composite type hub oil seal assembly for axle, it is characterized in that: mainly comprise outer connecting ring (1), oil seal washer (2), the axle sleeve that rubs (4), outer connecting ring (1) is arranged on the outside, and the axle sleeve that rubs (4) is arranged on the inboard, and the both is rotary structure; Connecting ring (1) and to being provided with at least one oil seal washer (2) between the axle sleeve that rubs (4) outside; The external cylindrical surface of oil seal washer (2) contacts with the inner cylindrical surface of outer connecting ring (1) constituting the static seal face, and the ring packing lip of oil seal washer (2) contacts with external cylindrical surface to the axle sleeve that rubs (4) with the formation sealing surface that rotatablely moves; On inner cylindrical surface, be provided with the axle sleeve static seal structure (5) that rubs to the axle sleeve that rubs (4); On the external cylindrical surface of connecting ring (1), be provided with connecting ring static seal structure (6) outside.
2. running mechanism self-rubbing composite type hub oil seal assembly for axle according to claim 1, it is characterized in that: described oil seal washer (2) comprises a main oil seal washer (21) and a secondary oil seal washer (22), main oil seal washer (21) is in the inboard near fluid, and secondary oil seal washer (22) is in the outside.
3. running mechanism self-rubbing composite type hub oil seal assembly for axle according to claim 1 and 2, it is characterized in that: the axial direction of connecting ring (1) outside, be provided with more than one axial pressure part (7), axially the axial end of pressure part (7) is higher than the axial plane S of outer connecting ring (1).
4. running mechanism self-rubbing composite type hub oil seal assembly for axle according to claim 1 and 2 is characterized in that: offered several fluid circulation radiation holes (9) outside on the connecting ring (1).
5. running mechanism self-rubbing composite type hub oil seal assembly for axle according to claim 4, it is characterized in that: connecting ring (1) and between the axle sleeve that rubs (4) outside, be provided with the constituent elements fluid suction fitting (8) of spiral chute dynamic pressure pump, on the axial plane of fluid suction fitting (8) or radial ringed, be provided with some forwards, oppositely arranged alternate radially or planar spiral groove (81).
6. running mechanism self-rubbing composite type hub oil seal assembly for axle according to claim 1 and 2 is characterized in that: outer connecting ring (1) and to the axle sleeve that rubs (4) all is the stamping part or the sintered part of precise forming.
7. running mechanism self-rubbing composite type hub oil seal assembly for axle according to claim 1 is characterized in that: described the axle sleeve static seal structure (5) that rubs is arranged on the sealing layer that application forms that is coated with on the axle sleeve that rubs (4) inner cylindrical surface.
8. running mechanism self-rubbing composite type hub oil seal assembly for axle according to claim 4 is characterized in that: described connecting ring static seal structure (6) is arranged on the sealing layer that application forms that is coated with on outer connecting ring (1) external cylindrical surface.
9. running mechanism self-rubbing composite type hub oil seal assembly for axle according to claim 2 is characterized in that: described to the axle sleeve that rubs (4) by to rubbing axle sleeve main part (41) and the axle sleeve connecting plate (42) that rubs connected and composed; Described main oil seal washer (21) and secondary oil seal washer (22) are arranged on outer connecting ring (1) and to rubbing between the axle sleeve main part (41), the axle sleeve static seal structure (5) that rubs are arranged on the axle sleeve connecting plate (42) that rubs.
10. running mechanism self-rubbing composite type hub oil seal assembly for axle according to claim 5 is characterized in that: the positive and negative spiral chute notch on the described spiral chute (81) is not connect on working surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201281628U CN201439820U (en) | 2009-07-23 | 2009-07-23 | Mobile machinery self-friction combined type axle wheel hub oil seal assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201281628U CN201439820U (en) | 2009-07-23 | 2009-07-23 | Mobile machinery self-friction combined type axle wheel hub oil seal assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201439820U true CN201439820U (en) | 2010-04-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201281628U Expired - Fee Related CN201439820U (en) | 2009-07-23 | 2009-07-23 | Mobile machinery self-friction combined type axle wheel hub oil seal assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201439820U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101614280B (en) * | 2009-07-23 | 2011-12-07 | 杜长春 | Self-rubbing composite type hub oil seal assembly for axle of walking machine |
| CN105090514A (en) * | 2015-08-12 | 2015-11-25 | 李纯 | Floating oil seal with ceramic composite abrasion-resistant surfaces and metal stamping ring bodies |
-
2009
- 2009-07-23 CN CN2009201281628U patent/CN201439820U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101614280B (en) * | 2009-07-23 | 2011-12-07 | 杜长春 | Self-rubbing composite type hub oil seal assembly for axle of walking machine |
| CN105090514A (en) * | 2015-08-12 | 2015-11-25 | 李纯 | Floating oil seal with ceramic composite abrasion-resistant surfaces and metal stamping ring bodies |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Self-rubbing composite type hub oil seal assembly for axle of walking machine Effective date of registration: 20140123 Granted publication date: 20100421 Pledgee: China Financial Leasing Co. Ltd. Pledgor: Du Changchun|Chongqing Duke high pressure seal Co., Ltd., Chongqing Duke Industry Co., Ltd. Registration number: 2014500000002 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100421 Termination date: 20180723 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |