CN202812207U - Seal structure of dumper oil cylinder - Google Patents
Seal structure of dumper oil cylinder Download PDFInfo
- Publication number
- CN202812207U CN202812207U CN 201220503525 CN201220503525U CN202812207U CN 202812207 U CN202812207 U CN 202812207U CN 201220503525 CN201220503525 CN 201220503525 CN 201220503525 U CN201220503525 U CN 201220503525U CN 202812207 U CN202812207 U CN 202812207U
- Authority
- CN
- China
- Prior art keywords
- oil cylinder
- dumper
- seal
- sealing
- primary seal
- 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
- 238000007789 sealing Methods 0.000 claims description 74
- 239000000428 dust Substances 0.000 claims description 19
- 239000000463 material Substances 0.000 claims description 10
- 229920000459 Nitrile rubber Polymers 0.000 claims description 5
- 229920002635 polyurethane Polymers 0.000 claims description 4
- 239000004814 polyurethane Substances 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 7
- 230000000576 supplementary effect Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 36
- 239000012530 fluid Substances 0.000 description 3
- 239000010720 hydraulic oil Substances 0.000 description 3
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000004067 bulking agent Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
Images
Landscapes
- Sealing Devices (AREA)
- Sealing With Elastic Sealing Lips (AREA)
Abstract
The utility model discloses a seal structure of a dumper oil cylinder. The dumper oil cylinder comprises a plurality of grades of oil cylinders, wherein the seal structure of the dumper oil cylinder comprises primary seals and secondary seals. Each primary seal and each secondary seal are respectively arranged on each grade of cylinder barrels. The secondary seals are arranged on the outside of the primary seals and are close to the end portion of the cylinder barrels. According to the seal structure of the dumper oil cylinder, a seal form of 'scraper seal-back-up ring-secondary seal- back-up ring- primary seal' on each grade of the cylinder barrels is adopted. According to the hardness seal of the primary seals and the softness seal of the secondary seals, oil leaked from primary seals can be sealed, and good supplementary effect with the primary seal can be formed, and the integrated seal effect is effectively improved.
Description
Technical field
The utility model relates to a kind of sealing configuration, relates in particular to a kind of sealing configuration for oil cylinder of dumper.
Background technique
At present, the oil cylinder of dumper on the market adopts single-action multi-stage oil cylinder usually, can obtain larger working stroke under limited installing space condition.Mostly adopt the spaced apart sealing configuration of dust ring, seal ring and supporting ring between the cylinder barrels at different levels of multi-stage oil cylinder.Generally, the seal ring of bearing seal action only has one, under the rugged environment such as low temperature, unbalance loading and sand and dust, produces seal failure easily and causes leakage of oil.Especially under low temperature environment, the pliability of seal ring and deformation performance all reduce greatly, very easily cause seal failure.
The model utility content
Technical problem to be solved in the utility model is to provide a kind of oil cylinder of dumper sealing configuration, can reduce under the low temperature environment producing oil leakage fault.
For reaching above-mentioned purpose, the utility model provides a kind of oil cylinder of dumper sealing configuration, described oil cylinder of dumper comprises multi-stage oil cylinder, wherein, described oil cylinder of dumper sealing configuration comprises: be arranged at respectively primary seal and secondary sealing between every grade of cylinder barrel, described secondary sealing is arranged on the end of the contiguous described cylinder barrel in the outside of described primary seal.
Above-mentioned oil cylinder of dumper sealing configuration, wherein said oil cylinder of dumper sealing configuration also comprises a dust ring, is arranged at the outside of described secondary sealing.
Above-mentioned oil cylinder of dumper sealing configuration, wherein said oil cylinder of dumper sealing configuration also comprise and are arranged at respectively between described primary seal and the secondary sealing and the supporting ring between described secondary sealing and the dust ring.
Above-mentioned oil cylinder of dumper sealing configuration, wherein said primary seal are U-shaped seal ring.
Above-mentioned oil cylinder of dumper sealing configuration, wherein said primary seal are polyurethane material part.
Above-mentioned oil cylinder of dumper sealing configuration, wherein said pair is sealed into the D RunddichtringO.
Above-mentioned oil cylinder of dumper sealing configuration, wherein said pair are sealed into low temperature nitrile butadiene rubber material part.
Above-mentioned oil cylinder of dumper sealing configuration, wherein, the diameter of described supporting ring is that an end is greater than the other end.
Above-mentioned oil cylinder of dumper sealing configuration is between wherein said primary seal and the secondary sealing and/or the supporting ring between described secondary sealing and the dust ring is two-layer and larger diameter end is oppositely arranged.
Effect of the present utility model is,
The oil cylinder of dumper sealing configuration that the utility model discloses, it is the seal form that between cylinder barrels at different levels, all adopts " dust ring-supporting ring-pair sealing-supporting ring-primary seal ", by the rigid sealing of primary seal, the soft sealing of secondary sealing, the fluid that is leaked out by primary seal can be sealed up, form good complementation with primary seal, so that integral sealing effect significantly improves.
Below in conjunction with the drawings and specific embodiments the utility model is described in detail, but not as to restriction of the present utility model.
Description of drawings
Fig. 1 is the sectional view that oil cylinder of dumper is used the utility model sealing configuration;
Fig. 2 is main seal structure figure;
Fig. 3 is secondary sealed structure chart;
Fig. 4 is the dust ring structural drawing;
Fig. 5 is the supporting ring structural drawing.
Wherein, reference character
1 primary seal (U-shaped seal ring)
2 secondary sealings (D RunddichtringO)
3 dust rings
4 supporting rings
41 larger diameter end
42 smaller diameter end
The outer sleeve of 5 multistage cylinder of dump trucks
6 final stage cylinder barrels
7 one-level cylinder barrels
Embodiment
Below in conjunction with accompanying drawing structural principle of the present utility model and working principle are done concrete description:
In embodiment shown in Figure 1, the utility model discloses a kind of oil cylinder of dumper sealing configuration, between every grade of cylinder barrel, to be disposed with respectively primary seal and secondary sealing, its purpose is, even the primary seal envelope is oil incessantly, and can carry out auxiliary seal by the pair sealing, reach the effect that hydraulic oil does not leak outside.
Further, disclose the utility model specific embodiment referring to Fig. 1
As shown in Figure 1, described oil cylinder of dumper comprises, within the outer sleeve 5 of multistage cylinder of dump truck, and final stage cylinder barrel 6, the inferior one-level cylinder barrel 7 laid successively ... until the piston rod in multi-stage oil cylinder center portion.
Described oil cylinder of dumper sealing configuration comprises: the dust ring 3 that arranges in the interval between upper level cylinder barrel and next stage cylinder barrel, supporting ring 4, secondary sealing 2, supporting ring 4 and primary seal 1.
Described secondary sealing 2 is arranged between described primary seal 1 and the described dust ring 3; Arrange respectively described supporting ring 4 between described primary seal 1 and the described secondary sealing 2 and between described secondary sealing 2 and the described dust ring 3.That is to say, all adopt the seal form setting of " the secondary sealing of dust ring 3-supporting ring 4-2-supporting ring 4-primary seal 1 " between cylinder barrels at different levels.
Referring to Fig. 2, main seal structure figure
Referring to Fig. 3, main seal structure figure
The D RunddichtringOs are adopted in described secondary sealing 2, its shape as shown in Figure 3, its material may be selected to be the low temperature nitrile butadiene rubber;
Adopt the pair sealing of low temperature nitrile butadiene rubber material, its minimum operating temperature can reach-40 ℃, and low temperature adaptability is better.The D RunddichtringO can seal up the fluid that is leaked out by primary seal 1, forms good complementation with primary seal 1, so that integral sealing effect significantly improves.
Compare with present technology, increase together secondary sealing 2(D RunddichtringO) though advantage just be primary seal 1(U RunddichtringO) envelope oil incessantly, also can seal the 2(D RunddichtringO by pair) carry out auxiliary seal, be unlikely to hydraulic oil and leak outside, thereby greatly reduced the generation of oil leakage fault.
Referring to Fig. 4 dust ring structural drawing
The utility model oil cylinder of dumper sealing configuration is also to be provided with the as shown in the figure dust ring 3 of shape in the end of contiguous described cylinder barrel.
Referring to Fig. 5 supporting ring structural drawing
Be respectively arranged with described supporting ring 4 between primary seal 1 described in the utility model and the described secondary sealing 2 and between described secondary sealing 2 and the described dust ring 3, as shown in the figure, described supporting ring 4 has larger diameter end 41 and smaller diameter end 42; Design like this, namely can reduce materials and the weight of supporting ring, can better play again the effect of supporting and guiding.
Another embodiment of the utility model
As shown in Figure 5, described supporting ring 4 is two-layer setting, is the larger diameter end of two-layer supporting ring is formed relatively.
In sum, the oil cylinder of dumper sealing configuration that the utility model discloses is the seal form that all adopts " dust ring-supporting ring-pair sealing-supporting ring-primary seal " between cylinder barrels at different levels, adopts U-shaped seal ring by primary seal, material selection high-performance long-acting polyurethane belongs to rigid sealing; The D RunddichtringO is adopted in secondary sealing, and material selection low temperature nitrile butadiene rubber belongs to soft sealing.The D RunddichtringO has good lower temperature resistance, and minimum operating temperature can reach-40 ℃, and low temperature adaptability is good.The D RunddichtringO can seal up the fluid that is leaked out by primary seal, forms good complementation with primary seal, so that integral sealing effect significantly improves.Owing in raw material, added graphite and high molecular abrasion-proof additive, so that the D RunddichtringO has low frictional properties and good wear resistance, simultaneously, owing to added the bulking agent of good heat-transfer, avoided the D RunddichtringO to gather too much heat because lubricating status is bad.
In a word, compared with prior art, increase the D RunddichtringO oil that sealing just can not seal primary seal as pair one, carry out auxiliary seal by the pair sealing, hydraulic oil is leaked outside.
Through checking on probation, adopt the sealing configuration of two seals circle (major and minor seal ring), oil cylinder of dumper oil leakage fault rate reduces greatly, and especially under worst cold case, the sealability of two seals has obtained better performance.
Certainly; the utility model also can have other various embodiments; in the situation that does not deviate from the utility model spirit and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the utility model, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the utility model.
Claims (9)
1. oil cylinder of dumper sealing configuration, described oil cylinder of dumper comprises multi-stage oil cylinder, it is characterized in that, described oil cylinder of dumper sealing configuration comprises: be arranged at respectively primary seal and secondary sealing between every grade of cylinder barrel, described secondary sealing is arranged on the end of the contiguous described cylinder barrel in the outside of described primary seal.
2. oil cylinder of dumper sealing configuration according to claim 1 is characterized in that, described oil cylinder of dumper sealing configuration also comprises a dust ring, is arranged at the outside of described secondary sealing.
3. oil cylinder of dumper sealing configuration according to claim 2 is characterized in that, described oil cylinder of dumper sealing configuration also comprises and is arranged at respectively between described primary seal and the secondary sealing and the supporting ring between described secondary sealing and the dust ring.
4. oil cylinder of dumper sealing configuration according to claim 3 is characterized in that, described primary seal is U-shaped seal ring.
5. according to claim 1,2,3 or 4 described oil cylinder of dumper sealing configurations, it is characterized in that described primary seal is polyurethane material part.
6. oil cylinder of dumper sealing configuration according to claim 3 is characterized in that, described pair is sealed into the D RunddichtringO.
7. according to claim 1,2,3 or 6 described oil cylinder of dumper sealing configurations, it is characterized in that described pair is sealed into low temperature nitrile butadiene rubber material part.
8. oil cylinder of dumper sealing configuration according to claim 3 is characterized in that, the diameter of described supporting ring is that an end is greater than the other end.
9. oil cylinder of dumper sealing configuration according to claim 8 is characterized in that, between described primary seal and the secondary sealing and/or the supporting ring between described secondary sealing and the dust ring is two-layer and larger diameter end is oppositely arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220503525 CN202812207U (en) | 2012-09-28 | 2012-09-28 | Seal structure of dumper oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220503525 CN202812207U (en) | 2012-09-28 | 2012-09-28 | Seal structure of dumper oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202812207U true CN202812207U (en) | 2013-03-20 |
Family
ID=47871077
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220503525 Expired - Lifetime CN202812207U (en) | 2012-09-28 | 2012-09-28 | Seal structure of dumper oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202812207U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104595493A (en) * | 2015-02-10 | 2015-05-06 | 烟台杰瑞石油装备技术有限公司 | Sealing device and sealing ring thereof |
| CN108533562A (en) * | 2018-04-25 | 2018-09-14 | 徐州徐工液压件有限公司 | A kind of high reliability thin-walled multistage hydraulic cylinder sealing system |
-
2012
- 2012-09-28 CN CN 201220503525 patent/CN202812207U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104595493A (en) * | 2015-02-10 | 2015-05-06 | 烟台杰瑞石油装备技术有限公司 | Sealing device and sealing ring thereof |
| CN108533562A (en) * | 2018-04-25 | 2018-09-14 | 徐州徐工液压件有限公司 | A kind of high reliability thin-walled multistage hydraulic cylinder sealing system |
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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: 20130320 |