CN205605830U - Shield constructs quick -witted thrust cylinder's seal structure of uide bushing department - Google Patents
Shield constructs quick -witted thrust cylinder's seal structure of uide bushing department Download PDFInfo
- Publication number
- CN205605830U CN205605830U CN201620368844.6U CN201620368844U CN205605830U CN 205605830 U CN205605830 U CN 205605830U CN 201620368844 U CN201620368844 U CN 201620368844U CN 205605830 U CN205605830 U CN 205605830U
- Authority
- CN
- China
- Prior art keywords
- oil cylinder
- cylinder
- fairlead
- lip
- 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 - Fee Related
Links
- 239000000428 dust Substances 0.000 claims abstract description 13
- 238000007789 sealing Methods 0.000 claims description 28
- 239000012535 impurity Substances 0.000 abstract description 6
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 abstract 5
- 238000009412 basement excavation Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000003245 coal Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
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- Actuator (AREA)
Abstract
The utility model discloses a shield constructs quick -witted thrust cylinder's seal structure of uide bushing department, it is including setting up the seal assembly between piston rod and uide bushing to and setting up the 2nd seal assembly between uide bushing and cylinder body, a seal assembly includes from hydro -cylinder inside a lip seal spare and the 2nd lip seal spare that extremely outside orientation set gradually and the lip relatively backward sets up. Through setting up a lip seal spare and the 2nd lip seal spare, prevented that the inside medium of hydro -cylinder overflows and the hydro -cylinder is outside impurity from getting into the hydro -cylinder inside, the 2nd seal assembly can avoid the inside medium of hydro -cylinder to take place outer problem of leaking simultaneously. Compare with traditional seal style, shield constructs quick -witted thrust cylinder's seal structure of uide bushing department can laminate with the piston rod closed -up surface, and the serious pollution thing can be struck off and the slot is hugged closely like mud, ice, the outer lip of dust ring, and it is rational in infrastructure, safe and reliable, long service life.
Description
Technical field
This utility model relates to tunnel piercing special engineering field of mechanical technique, is specifically related to a kind of shield machine and pushes away
Structure is sealed at the fairlead of oil-feed cylinder.
Background technology
Shield machine is the special engineering machinery of a kind of tunnel piercing, modern shield excavation machine collection is light, mechanical, electrical,
Liquid, sensing, information technology in one, have the excavation cutting soil body, conveying soil quarrel, assembled tunnel-liner,
Measure and guide the function such as correction, relate to geology, building, machinery, mechanics, hydraulic pressure, electrically, control, survey
The multi-door subject technologies such as amount, shield excavation machine is widely used in subway, railway, highway, municipal administration, water power etc.
Tunnel Engineering.Onward impulse required during shield machine work is provided by propelling cylinder, but the work of propelling cylinder
Making environment very severe, even part oil cylinder is immersed in slime water, and along with chad, dregs, dust
Corrode, in operation process frequently, piston rod damage, sealing member can be caused to damage, thus occur inside and outside
Leakage, affects the normal work of propelling cylinder.
Utility model content
The purpose of this utility model is to overcome above-mentioned technical deficiency, proposes one and is able to ensure that propelling cylinder exists
Permanently effective sealing property can be kept during work, increase the leading of shield machine thrust oil cylinder in its service life
Structure is sealed at set.
For reaching above-mentioned technical purpose, the technical solution of the utility model provides a kind of shield machine thrust oil cylinder
Sealing structure at fairlead, it includes the first black box being arranged between described piston rod and fairlead,
And the second black box being arranged between described fairlead and cylinder body, wherein, described first black box
Including the first lippacking set gradually to outside direction inside oil cylinder and lip is the most oppositely arranged
With the second lippacking, the lip of described first lippacking is arranged towards oil cylinder is internal, and described second
The lip of lippacking is arranged towards oil cylinder is outside.
Preferably, described first lippacking is provided with a back-up ring relative to the side outside oil cylinder.
Preferably, described fairlead is provided with dust ring between external port and the piston rod relative to the outside side of oil cylinder,
The side of the most described external port of described dust ring is provided with pressure ring.
Preferably, described second black box includes an O type sealing member, and is arranged on a described O
Type sealing member is relative to an O type sealing member back-up ring of the outside side of oil cylinder.
Preferably, it is provided with the 2nd O type sealing member between port and the fairlead of described oil cylinder.
At the fairlead of shield machine thrust oil cylinder described in the utility model seal structure, its by piston rod with
The first the most reverse lippacking and the second lippacking are set between fairlead, it is therefore prevented that in oil cylinder
Impurity outside portion's medium spilling and oil cylinder enters inside oil cylinder, arranges between fairlead and cylinder body meanwhile
Second black box, by using the second black box, thus avoids oil cylinder interior media generation external leakage
Problem.Compared with traditional seal style, close at the fairlead of shield machine thrust oil cylinder described in the utility model
Seal structure, it is possible to fit tightly with piston rod surface, can strike off serious pollution thing such as mud, ice, dust-proof
The outer lip of circle is close to groove, and rational in infrastructure, and safe and reliable, service life is long.
Accompanying drawing explanation
Fig. 1 is the sectional view sealing structure at the fairlead of shield machine thrust oil cylinder described in the utility model.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with accompanying drawing
And embodiment, this utility model is further elaborated.Should be appreciated that described herein specifically
Embodiment, only in order to explain this utility model, is not used to limit this utility model.
Embodiment of the present utility model provides sealing structure at the fairlead 3 of a kind of shield machine thrust oil cylinder,
It includes the first black box being arranged between described piston rod 2 and fairlead 3, and is arranged on described
The second black box between fairlead 3 and cylinder body 1.Wherein, described first black box includes from oil cylinder
The first lippacking 4 and the second lip that inside sets gradually to outside direction and lip is the most oppositely arranged
Shape sealing member 5, the lip of described first lippacking 4 is arranged towards oil cylinder is internal, and described second lip is close
The lip of sealing 5 is arranged towards oil cylinder is outside.
Described lippacking has wider operating temperature range, and about between-30～110 DEG C, and it is quiet
State and dynamic sealing performance are fabulous, and the U-shaped circle with corresponding compact type sealing ring or with secondary lip compares to be had
Low-down recoil strength, under dynamic condition, Residual oil pumpback ability is strong, meanwhile, arranges the positive and negative peace of lippacking
Dress, makes the first lippacking 4 play primary seal effect, prevents oil cylinder interior media from overflowing, and the first lip is close
Sealing 4 is prevented from the impurity outside oil cylinder and enters inside oil cylinder, and the most dust-proof, waterproof and prevention produces oil
Film.
Owing to described oil cylinder internal pressure is relatively big, outside the described first relative oil cylinder of lippacking 4
Side is provided with a back-up ring 41, it is to avoid air pressure inside is excessive, causes the first lippacking 4 to fly out.
It is provided with dust ring 6 between external port and the piston rod 2 of the outside side of the described relative oil cylinder of fairlead 3, enters
One step prevents oil cylinder external dust, impurity from entering in oil cylinder, it is preferred that described dust ring is selected the most wear-resistant
The polyester material damaged prepares, and meanwhile, the side of the most described external port of described dust ring is provided with pressure ring 61, keeps away
Exempt from dust ring to fly out.
Described second black box includes an O type sealing member 7, and is arranged on a described O type sealing member
Oneth O type sealing member back-up ring 71 of the outside side of 7 relative oil cylinders.A described O type sealing member back-up ring 71 with
Oneth O type sealing member 7 with the use of avoiding oil cylinder interior media generation external leakage.Further,
It is provided with the 2nd O type sealing member 8, to described fairlead 3 and cylinder body between port and the fairlead 3 of described oil cylinder
Secondary protection is carried out, it is ensured that impurity cannot be introduced into inside oil cylinder between 1.
Sealing structure at the fairlead 3 of shield machine thrust oil cylinder described in the utility model, it is by piston rod 2
With relative the first reverse lippacking 4 and the second lippacking 5 is set between fairlead 3, it is therefore prevented that
Impurity outside oil cylinder interior media spilling and oil cylinder enters inside oil cylinder, meanwhile, at fairlead 3 and cylinder body 1
Between O type sealing member 7 and an O type sealing member back-up ring 71 is set, by described oneth O type seal
Part back-up ring 71 and an O type sealing member 7 with the use of, thus avoid oil cylinder interior media generation external leakage
Problem.Compared with traditional seal style, the fairlead 3 of shield machine thrust oil cylinder described in the utility model
Place seal structure fairlead 3 can be made to fit tightly with piston rod 2 surface, strike off serious pollution thing such as mud,
Ice, the outer lip of dust ring is close to groove, is prevented dampness from entering groove, simultaneously the polyester material of high wear-resistant
Dust ring can be worked in the environment of the arduousest, be generally used for coal mining and excavation machinery.This practicality
New type of safe is reliable, and rational in infrastructure, service life is long.
The above detailed description of the invention of the present utility model, is not intended that this utility model protection domain
Limit.Any various other made according to technology of the present utility model design change and deformation accordingly,
Should be included in this utility model scope of the claims.
Claims (5)
1. at the fairlead of a shield machine thrust oil cylinder, seal structure, it is characterized in that, including the first black box being arranged between piston rod and fairlead, and the second black box being arranged between described fairlead and cylinder body, wherein, described first black box includes setting gradually to outside direction inside oil cylinder and lip is the most oppositely arranged the first lippacking and the second lippacking, the lip of described first lippacking is arranged towards oil cylinder is internal, and the lip of described second lippacking is arranged towards oil cylinder is outside.
Structure is sealed the most according to claim 1, it is characterised in that described first lippacking is provided with a back-up ring relative to the side outside oil cylinder at the fairlead of shield machine thrust oil cylinder.
Structure is sealed the most according to claim 1, it is characterised in that described fairlead is provided with dust ring between external port and the piston rod relative to the outside side of oil cylinder, and the side of the most described external port of described dust ring is provided with pressure ring at the fairlead of shield machine thrust oil cylinder.
Structure is sealed the most according to claim 1, it is characterised in that described second black box includes an O type sealing member, and is arranged on a described O type sealing member O type sealing member back-up ring relative to the outside side of oil cylinder at the fairlead of shield machine thrust oil cylinder.
Structure is sealed the most according to claim 1, it is characterised in that between port and the fairlead of described oil cylinder, be provided with the 2nd O type sealing member at the fairlead of shield machine thrust oil cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620368844.6U CN205605830U (en) | 2016-04-27 | 2016-04-27 | Shield constructs quick -witted thrust cylinder's seal structure of uide bushing department |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620368844.6U CN205605830U (en) | 2016-04-27 | 2016-04-27 | Shield constructs quick -witted thrust cylinder's seal structure of uide bushing department |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205605830U true CN205605830U (en) | 2016-09-28 |
Family
ID=56970587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620368844.6U Expired - Fee Related CN205605830U (en) | 2016-04-27 | 2016-04-27 | Shield constructs quick -witted thrust cylinder's seal structure of uide bushing department |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205605830U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107314090A (en) * | 2017-07-04 | 2017-11-03 | 浙江捷昌线性驱动科技股份有限公司 | It is a kind of can bidirectional self-locking electric pushrod |
| CN107366746A (en) * | 2017-07-04 | 2017-11-21 | 浙江捷昌线性驱动科技股份有限公司 | A kind of electric pushrod of multilayer proofing |
| CN109854748A (en) * | 2019-04-08 | 2019-06-07 | 浙江力耐得传动科技有限公司 | A kind of waterproof seal electric pushrod |
-
2016
- 2016-04-27 CN CN201620368844.6U patent/CN205605830U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107314090A (en) * | 2017-07-04 | 2017-11-03 | 浙江捷昌线性驱动科技股份有限公司 | It is a kind of can bidirectional self-locking electric pushrod |
| CN107366746A (en) * | 2017-07-04 | 2017-11-21 | 浙江捷昌线性驱动科技股份有限公司 | A kind of electric pushrod of multilayer proofing |
| CN109854748A (en) * | 2019-04-08 | 2019-06-07 | 浙江力耐得传动科技有限公司 | A kind of waterproof seal electric pushrod |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160928 |