CN203023453U - Seal assembly of walking gear box of excavator - Google Patents
Seal assembly of walking gear box of excavator Download PDFInfo
- Publication number
- CN203023453U CN203023453U CN 201320028500 CN201320028500U CN203023453U CN 203023453 U CN203023453 U CN 203023453U CN 201320028500 CN201320028500 CN 201320028500 CN 201320028500 U CN201320028500 U CN 201320028500U CN 203023453 U CN203023453 U CN 203023453U
- Authority
- CN
- China
- Prior art keywords
- seal
- metal floating
- excavator
- walking gear
- seal rings
- 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.)
- Expired - Lifetime
Links
- 238000007667 floating Methods 0.000 claims abstract description 44
- 239000002184 metal Substances 0.000 claims abstract description 33
- 239000000463 material Substances 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims description 34
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 239000003921 oil Substances 0.000 abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 239000000428 dust Substances 0.000 abstract description 3
- 230000002349 favourable effect Effects 0.000 abstract 1
- 238000007654 immersion Methods 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 239000010687 lubricating oil Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000003082 abrasive agent Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000008041 oiling agent Substances 0.000 description 1
- 238000012372 quality testing Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000004043 responsiveness Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Images
Landscapes
- Mechanical Sealing (AREA)
- Sealing Devices (AREA)
Abstract
The utility model discloses a seal assembly of a walking gear box of an excavator and belongs to seal devices. The seal assembly of the walking gear box of the excavator structurally comprises two metal floating seal rings and two O-shaped rubber seal rings; the two metal floating seal rings are symmetrically arranged; the two O-shaped rubber seal rings are respectively arranged on outer conical surfaces of the two metal floating seal rings; and the two metal floating seal rings and the two O-shaped rubber seal rings are respectively arranged in a floating seal seat. Compared with the prior art, the seal assembly of the walking gear box of the excavator provided by the utility model has efficient seal property, can effectively prevent the immersion of external dirty matters, dust, water and grinding materials and prevent the leakage of internal oil liquid and lubricating oil and has favorable popularization and application value.
Description
Technical field
The utility model relates to a kind of seal arrangement, especially a kind of excavator walking gear case seal assembly.
Background technique
Continuous progress and development along with industry, excavator has become the indispensable machinery of present engineering construction industry, since 20 th century later, the production of excavator is to the future development of maximization, microminiaturization, multifunction, customizations and automation in the world, and more famous excavator brand mainly contains Japan " Xiao Song ", U.S.'s " Caterpillar ", Korea S " Daewoo ".The more famous excavator manufacturing enterprise of China mainly contains Xu work, Yuchai heavy industry etc.Up to the present, full hydraulic excavator has obtained developing rapidly, makes excavator develop into hydraulic operation, pneumatic control, hydraulic servo manipulation and electrical control, wireless remotecontrol, the control of electronic computer synthesizer by simple lever control.Adopt radio control at dangerous area or underwater operation, utilize electronic computer control receiver and laser guide to combine, realized the full automation that excavator operation is handled, but excavator is in operation, reveal and sealing problem is perplexing excavator manufacturing enterprise always, and the oily leakage problem of excavator walking gear case and sealing problem are the difficult problems that excavator sector is difficult to overcome always.
Several large Company (Seiko, Japan etc.) of Japan has represented the direction of international bearing seal technical development.They are developing sealing technique developing direction and bearing means technical elements history early, and research has the degree of depth, and sealing technique is comparatively ripe at present.Develop into many sealing lips from single sealing lip, develop non-contact sealing etc. from contact seal; From product type, ball bearing, roller bearing all have.China follows international trend, deep groove ball bearing, water pump bearing, railway (tapered roller) bearing, needle bearing and several large class bearings of cylindrical roller bearing with seal ring have also been developed, wherein deep groove ball bearing output is maximum, and application surface is the widest.In the recent period to China's bearing seal quality testing result, China's bearing seal structure design problem is larger according to SBTS, and sealing effect is bad, and leakage fat phenomenon is more serious, and customer responsiveness is strong.
At present, good solution is not also arranged.
The model utility content
Technical assignment of the present utility model is to provide a kind of excavator walking gear case seal assembly for above-mentioned deficiency of the prior art, this excavator walking gear case seal assembly has efficient sealability, can prevent effectively that outside dirt, dust, water and abrasive material from immersing, and prevent the characteristics of inner fluid and oil leak.
The technological scheme that its technical problem that solves the utility model adopts is: it comprises two metal floating seal rings and two O type rubber seal, described two metal floating seal rings are symmetrical arranged, described two O type rubber seal are separately positioned on the male cone (strobilus masculinus) of two metal floating seal rings, and described two O type rubber seal and two metal floating seal rings are separately positioned in floating sealing base.
Described two contacted end faces of metal floating seal ring form the sealing surface perpendicular to spin axis in square with the axis plane, two sealing surfaces are opened from outside to inside gradually, form v-shaped gap.
The angle of described v-shaped gap is 10 degree.
Described two metal floating seal rings adopt the spheroidal graphite steel material.
Excavator walking gear case seal assembly of the present utility model compared to the prior art, has following outstanding beneficial effect: efficient sealability, can prevent effectively that outside dirt, dust, water and abrasive material from immersing, and prevent inner fluid and oil leak; Automatic centering function, can effectively compensate beating in the bias of floating sealing base and axle and movement process, make it have the premium properties such as wear-resisting, shock-resistant, the medium characteristics of operating mode that the sealing assembly can be widely used in that engineering machinery, particularly operating conditions are abominable, serious wear, inconvenience are safeguarded.
Description of drawings
Accompanying drawing 1 is that the master of excavator walking gear case seal assembly looks sectional view;
Description of reference numerals: 1, O type rubber seal, 2, the metal floating seal ring, 3, v-shaped gap, 4, sealing surface, 5, male cone (strobilus masculinus).
Embodiment
Be described in detail below with reference to Figure of description 1 and 2 pairs of excavator walking gear case seal assemblies of the present utility model of accompanying drawing.
Excavator walking gear case seal assembly of the present utility model, its structure comprises two metal floating seal rings 2 and two O type rubber seal 1, described two metal floating seal rings 2 are symmetrical arranged, described two O type rubber seal 1 are separately positioned on the male cone (strobilus masculinus) 5 of two metal floating seal rings 2, and described two O type rubber seal 1 and two metal floating seal rings 2 are separately positioned in floating sealing base.
Described two contacted end faces of metal floating seal ring 2 form and open gradually from outside to inside perpendicular to 4, two sealing surfaces 4 of sealing surface of spin axis in square with the axis plane, form v-shaped gap 3.Be beneficial to oiling agent and enter sealing surface 4.The effect that after lubricant oil heats up by capillarity, centrifugal force and inner chamber, internal pressure increases enters between two sealing surfaces 4 by this v-shaped gap 3, form the very thin oil film of one deck and produce fluid resistance, promote heat radiation by circulating of fluid, realize lubricated and sealing.
The angle of described v-shaped gap 3 is 10 degree.
Described two metal floating seal rings 2 adopt the spheroidal graphite steel material.Has good wear-resisting, high temperature resistant and high strength.
The sealing surface 4 of metal floating seal ring 2 adopts abrasive process to process, O type rubber seal 1 acts on the axial thrust load of the elastic force on metal floating seal ring male cone (strobilus masculinus) 5, as the axial load on sealing surface 4, make matching trim 4 close contacts of two metal floating seal ring 2 precise finishes, produce sealing usefulness.Radial component makes 2 automatic centerings of metal floating seal ring.Along with sealing surface 4 wearing and tearing increase, O type rubber seal 1 discharges elastic force and realizes nose balance.Make metal floating seal ring 2 keep floating, mutually following the reliability that has guaranteed sealing under the comprehensive function of O type rubber seal 1 elastic force.
The parallelism of the sealing surface 4 of two metal floating seal rings 2≤3 ㎜, planeness≤6 ㎜, roughness RQ=0.05 ㎜, thus be in contact with one another the desirable seal state that reaches.Two 2 one of metal floating seal rings are relatively static, one is rotated with floating sealing base, O type rubber seal 1 is transmitted friction torque as intermediary to black box, rely on stiction to drive the metal floating seal ring and rotate with floating sealing base, prevent that simultaneously another metal floating seal ring from rotating with axle.Floating sealing base is held O type rubber seal 1 and metal floating seal ring 2, and makes both keep certain position in the space.Resiliently deformable occurs in O type rubber seal 1 when pressurized, can automatically adapt to irregular surface, and itself and floating sealing base internal surface close contact play the static seal effect.The inner conical surface of floating sealing base plays the effect of transmitting friction torque simultaneously.
Except the described technical characteristics of specification, be the known technology of those skilled in the art.
Claims (4)
1. excavator walking gear case seal assembly, it is characterized in that: comprise two metal floating seal rings and two O type rubber seal, described two metal floating seal rings are symmetrical arranged, described two O type rubber seal are separately positioned on the male cone (strobilus masculinus) of two metal floating seal rings, and described two O type rubber seal and two metal floating seal rings are separately positioned in floating sealing base.
2. excavator walking gear case seal assembly according to claim 1, it is characterized in that: described two contacted end faces of metal floating seal ring are in square with the axis plane, formation is perpendicular to the sealing surface of spin axis, and two sealing surfaces are opened from outside to inside gradually, forms v-shaped gap.
3. excavator walking gear case seal assembly according to claim 2 is characterized in that: the angle of described v-shaped gap is 10 degree.
4. excavator walking gear case seal assembly according to claim 1, is characterized in that: described two metal floating seal rings employing spheroidal graphite steel material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320028500 CN203023453U (en) | 2013-01-18 | 2013-01-18 | Seal assembly of walking gear box of excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320028500 CN203023453U (en) | 2013-01-18 | 2013-01-18 | Seal assembly of walking gear box of excavator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203023453U true CN203023453U (en) | 2013-06-26 |
Family
ID=48647440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320028500 Expired - Lifetime CN203023453U (en) | 2013-01-18 | 2013-01-18 | Seal assembly of walking gear box of excavator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203023453U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103075498A (en) * | 2013-01-18 | 2013-05-01 | 山东博特轴承有限公司 | Sealing assembly of walking gear box of excavator |
| CN106352096A (en) * | 2016-10-25 | 2017-01-25 | 韶关市铁友建设机械有限公司 | Floating seal |
| CN117302791A (en) * | 2022-06-20 | 2023-12-29 | 上海拓牛智能科技有限公司 | Air duct system and garbage can |
-
2013
- 2013-01-18 CN CN 201320028500 patent/CN203023453U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103075498A (en) * | 2013-01-18 | 2013-05-01 | 山东博特轴承有限公司 | Sealing assembly of walking gear box of excavator |
| CN106352096A (en) * | 2016-10-25 | 2017-01-25 | 韶关市铁友建设机械有限公司 | Floating seal |
| CN117302791A (en) * | 2022-06-20 | 2023-12-29 | 上海拓牛智能科技有限公司 | Air duct system and garbage can |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130626 |