CN206458659U - A kind of shield oil cylinder sealing structure - Google Patents
A kind of shield oil cylinder sealing structure Download PDFInfo
- Publication number
- CN206458659U CN206458659U CN201621458492.XU CN201621458492U CN206458659U CN 206458659 U CN206458659 U CN 206458659U CN 201621458492 U CN201621458492 U CN 201621458492U CN 206458659 U CN206458659 U CN 206458659U
- Authority
- CN
- China
- Prior art keywords
- ring
- piston
- oil cylinder
- guide sleeve
- wall
- 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
- 238000007789 sealing Methods 0.000 title claims abstract description 41
- 239000000428 dust Substances 0.000 claims abstract description 17
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910052802 copper Inorganic materials 0.000 claims abstract description 9
- 239000010949 copper Substances 0.000 claims abstract description 9
- 238000003466 welding Methods 0.000 claims abstract description 9
- 238000012856 packing Methods 0.000 claims abstract description 7
- 229920000459 Nitrile rubber Polymers 0.000 claims description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 230000006835 compression Effects 0.000 abstract description 3
- 238000007906 compression Methods 0.000 abstract description 3
- 238000011109 contamination Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 238000001125 extrusion Methods 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 3
- 230000035939 shock Effects 0.000 abstract description 3
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000003319 supportive effect Effects 0.000 description 2
- 230000007257 malfunction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Abstract
The utility model is provided and piston rod is provided with a kind of shield oil cylinder sealing structure, including cylinder body, cylinder body, and piston rod end is provided with piston, and piston outer wall is sealed with inboard wall of cylinder block to be coordinated；Guide sleeve is located between cylinder body and piston rod, and circumferentially dust ring, waterproof grommet, axle sealing ring back-up ring, axle sealing ring, bumper ring are sequentially provided with from outside to inside along inwall on the guide sleeve；On the piston combined type packing ring, bumper ring are circumferentially with along outer wall.Using dust ring with waterproof grommet group to using, can effectively anti-extrusion, and provide preferably dust-proof, waterproof effect, and beneficial to maintenance；Piston can reduce severe caused damage of the compression shock to primary seal of oil contamination, operating mode by the way of combined type packing ring and the combination of bumper ring two seals, improve the oil cylinder life-span；Piston outer wall and guide sleeve inwall welding layers of copper, it is possible to provide support strength, when shield oil cylinder bears big side force, can effectively support and piston rod will not be caused to scratch and damage.
Description
Technical field
The utility model is related to a kind of shield oil cylinder sealing structure, belongs to shield component technology field.
Background technology
At present, used by dust ring, the axle sealed the conventional shield oil cylinder sealing structure of in the market, guide sleeve part
Sealing ring, the support ring played a supportive role composition, piston portion is by the Glais ring sealed, the support ring played a supportive role
Composition.
Oil cylinder is the executing agency of hydraulic system, shield oil cylinder during the shield-tunneling construction back and forth run, due to humidity,
The severe factor such as geology is not clear and the improper damage caused is protected in work progress, cause shield oil cylinder dust ring occur and squeeze
Go out, the timeliness problem such as piston rod is pulled, piston packing is damaged, oil cylinder cisco unity malfunction when serious, influence shield machine is just
Often construction.
Utility model content
The technical problems to be solved in the utility model be how to prevent the dust ring of shield oil cylinder from extruding, piston primary seal damage
Wound, to extend the service life of shield oil cylinder.
In order to solve the above-mentioned technical problem, the technical solution of the utility model is to provide a kind of shield oil cylinder sealing structure,
Including cylinder body, piston rod is provided with cylinder body, piston rod end is provided with piston, and piston outer wall is sealed with inboard wall of cylinder block to be coordinated；It is oriented to
It is sheathed between cylinder body and piston rod, it is characterised in that：On the guide sleeve along inwall circumferentially be sequentially provided with from outside to inside it is dust-proof
Circle, waterproof grommet, axle sealing ring back-up ring, axle sealing ring, bumper ring；On the piston combined type is circumferentially with along outer wall
Sealing ring, bumper ring.
Preferably, the guide sleeve outer wall coordinates with inboard wall of cylinder block screw thread, and the guide sleeve inwall is matched somebody with somebody with piston rod packing
Close.
Preferably, the guide sleeve end is connected with pressing plate.
Preferably, the dust ring is single lip, demountable structure.
Preferably, the groove of the dust ring is closed by baffle plate.
Preferably, the waterproof grommet is nitrile rubber sealing ring.
Preferably, the O-ring provided with waterproof and sealing between the guide sleeve outer wall and inboard wall of cylinder block.
Preferably, O-ring is provided between the piston inner wall and piston rod.
Preferably, the guide sleeve inwall and the piston outer wall are equipped with welding layers of copper.
Preferably, the piston rod is fixed with piston by backing-up screw.
Compared with prior art, the shield oil cylinder sealing structure that the utility model is provided has the advantages that：
1st, using the waterproof grommet group of dust ring and nitrile rubber material to using, can effectively anti-extrusion, and provide
Preferably dust-proof, waterproof effect, and beneficial to maintenance；
2nd, piston can reduce oil contamination, work by the way of combined type packing ring and the combination of bumper ring two seals
Damage of the compression shock to primary seal caused by condition is severe, improves the oil cylinder life-span；
3rd, piston outer wall, guide sleeve inwall welding layers of copper, it is possible to provide support strength, big side force is born in shield oil cylinder
When, it can effectively support and piston rod will not be caused to scratch and damage.
Brief description of the drawings
The shield oil cylinder sealing structure schematic diagram that Fig. 1 provides for the present embodiment；
Fig. 2 is the partial enlarged drawing of guide sleeve part；
Fig. 3 is the partial enlarged drawing of piston portion；
In figure：1 is screw, and 2 be pressing plate, and 3 be guide sleeve, and 4 be dust ring, and 5 be waterproof grommet, and 6 be axle sealing ring
Back-up ring, 7 be axle sealing ring, and 8 be waterproof O-ring, and 9 be bumper ring, and 10 be the first O-ring back-up ring, and 11 be the first O-ring, 12
It is cylinder body for the first welding layers of copper, 13,14 be piston rod, and 15 be the second O-ring back-up ring, and 16 be the second O-ring, and 17 be combined type
Sealing ring, 18 be bumper ring, and 19 be the second welding layers of copper, and 20 be piston, and 21 be backing-up screw.
Embodiment
With reference to specific embodiment, the utility model is expanded on further.It should be understood that these embodiments are merely to illustrate this
Utility model rather than limitation scope of the present utility model.In addition, it is to be understood that reading the content of the utility model instruction
Afterwards, those skilled in the art can make various changes or modifications to the utility model, and these equivalent form of values equally fall within this Shen
Please appended claims limited range.
The shield oil cylinder sealing structure schematic diagram that Fig. 1 provides for the present embodiment, described shield oil cylinder sealing structure includes
Piston rod 14 is provided with cylinder body 13, cylinder body 13, the end of piston rod 14 is equipped with piston 20, and is fixed by backing-up screw 21, piston
20 outer walls coordinate with the inner wall sealing of cylinder body 13；Guide sleeve 3 is mounted between cylinder body 13 and piston rod 14, the outer wall of guide sleeve 3 and cylinder body
13 inner threads are connected, and the inwall of guide sleeve 3 is sealed with piston rod 14 to be coordinated, and the end of guide sleeve 3 is connected with pressing plate 2 with screw 1
Connect.
With reference to Fig. 2, dust ring 4, waterproof grommet 5, axle are circumferentially sequentially arranged with from outside to inside with close along inwall on guide sleeve 3
Seal back-up ring 6, axle sealing ring 7, bumper ring 9, can effectively anti-extrusion, and provide preferably dust-proof, waterproof effect, and be beneficial to
Maintenance.Waterproof O-ring 8, the first O-ring 11 and the first O-ring back-up ring 10 are housed between the outer wall of guide sleeve 3 and the inwall of cylinder body 13.
Dust ring 4 is single lip, and the groove of dust ring 4 is closed using baffle plate so that dust ring is detachable.
Waterproof grommet 5 is nitrile rubber material.5 groups of dust ring 4 and waterproof grommet is to using.
Axle sealing ring 7 seals equipped with axle sealing ring back-up ring 6.
With reference to Fig. 3, combined type packing ring 17, bumper ring 18 are circumferentially housed along outer wall on piston 20, bumper ring 18 is located at nothing
Rod cavity side, the mode of two seals combination can reduce the severe caused compression shock of oil contamination, operating mode to primary seal
Damage, improves the oil cylinder life-span.Second O-ring 16 and the second O-ring back-up ring 15 are housed between the inwall of piston 20 and piston rod 14.
In addition, the inwall of guide sleeve 3 is equipped with the first welding layers of copper 12, the outer wall of piston 20 is equipped with the second welding layers of copper 19, welding
Layers of copper can provide support strength, when shield oil cylinder bears big side force, can effectively support and piston rod will not be caused
Scratch and damage.
Claims (10)
1. piston rod (14) is provided with a kind of shield oil cylinder sealing structure, including cylinder body (13), cylinder body (13), piston rod (14) end
Portion is provided with piston (20), and piston (20) outer wall coordinates with cylinder body (13) inner wall sealing；Guide sleeve (3) is located at cylinder body (13) and piston
Between bar (14), it is characterised in that：Dust ring (4), waterproof are circumferentially sequentially provided with from outside to inside along inwall on the guide sleeve (3)
Sealing ring (5), axle sealing ring back-up ring (6), axle sealing ring (7), bumper ring (9)；It is circumferential along outer wall on the piston (20)
Provided with combined type packing ring (17), bumper ring (18).
2. a kind of shield oil cylinder sealing structure as claimed in claim 1, it is characterised in that：Guide sleeve (3) outer wall and cylinder
Body (13) inner thread coordinates, and guide sleeve (3) inwall is sealed with piston rod (14) to be coordinated.
3. a kind of shield oil cylinder sealing structure as claimed in claim 1, it is characterised in that：Guide sleeve (3) end and pressure
Plate (2) is connected.
4. a kind of shield oil cylinder sealing structure as claimed in claim 1, it is characterised in that：The dust ring (4) be single lip,
Demountable structure.
5. a kind of shield oil cylinder sealing structure as described in claim 1 or 4, it is characterised in that：The groove of the dust ring (4)
Closed by baffle plate.
6. a kind of shield oil cylinder sealing structure as claimed in claim 1, it is characterised in that：The waterproof grommet (5) is fourth
Nitrile rubber sealing ring.
7. a kind of shield oil cylinder sealing structure as claimed in claim 1, it is characterised in that：Guide sleeve (3) outer wall and cylinder
O-ring provided with waterproof and sealing between body (13) inwall.
8. a kind of shield oil cylinder sealing structure as claimed in claim 1, it is characterised in that：Piston (20) inwall and piston
O-ring is provided between bar (14).
9. a kind of shield oil cylinder sealing structure as claimed in claim 1, it is characterised in that：Guide sleeve (3) inwall and institute
State piston (20) outer wall and be equipped with welding layers of copper.
10. a kind of shield oil cylinder sealing structure as claimed in claim 1, it is characterised in that：The piston rod (14) and piston
(20) it is fixed by backing-up screw (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621458492.XU CN206458659U (en) | 2016-12-28 | 2016-12-28 | A kind of shield oil cylinder sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621458492.XU CN206458659U (en) | 2016-12-28 | 2016-12-28 | A kind of shield oil cylinder sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206458659U true CN206458659U (en) | 2017-09-01 |
Family
ID=59698309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621458492.XU Expired - Fee Related CN206458659U (en) | 2016-12-28 | 2016-12-28 | A kind of shield oil cylinder sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206458659U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108050122A (en) * | 2017-10-09 | 2018-05-18 | 中国铁建重工集团有限公司 | A kind of cylinder component and stone crusher for shield machine stone crusher |
| CN110307211A (en) * | 2019-07-09 | 2019-10-08 | 南通翔骜液压润滑设备有限公司 | The hydraulic cylinder for having waterproof |
| CN111608984A (en) * | 2020-06-02 | 2020-09-01 | 徐州徐工液压件有限公司 | Oil cylinder guiding and sealing system suitable for mine dust and humid environment |
-
2016
- 2016-12-28 CN CN201621458492.XU patent/CN206458659U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108050122A (en) * | 2017-10-09 | 2018-05-18 | 中国铁建重工集团有限公司 | A kind of cylinder component and stone crusher for shield machine stone crusher |
| CN110307211A (en) * | 2019-07-09 | 2019-10-08 | 南通翔骜液压润滑设备有限公司 | The hydraulic cylinder for having waterproof |
| CN111608984A (en) * | 2020-06-02 | 2020-09-01 | 徐州徐工液压件有限公司 | Oil cylinder guiding and sealing system suitable for mine dust and humid environment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206458659U (en) | A kind of shield oil cylinder sealing structure | |
| CN201763722U (en) | Double-acting multilevel hydraulic cylinder | |
| CN204099333U (en) | A kind of double-action single-stage cylinder | |
| CN203571044U (en) | Water lubrication sealing device for ships | |
| CN203272796U (en) | Sealing structure of pull rod of variable-loading coal mill | |
| CN204647315U (en) | A kind of high voltage-resistant bi-directional rotating seal ring peculiar to vessel | |
| CN104847892B (en) | A kind of extruder cylinder piston rod and cylinder structure | |
| CN201836152U (en) | Guide sleeve of hydraulic oil cylinder | |
| CN202629064U (en) | Primary seal structure of oil cylinder piston | |
| CN206571764U (en) | Anti-leak piston bar | |
| CN208900462U (en) | Automobile hydraulic tailgate hydraulic cylinder | |
| CN205618467U (en) | Hydraulic seal circle | |
| CN205315711U (en) | Reciprocating motion oil blanket structure | |
| CN208487208U (en) | A kind of split type oil sealing | |
| CN201810757U (en) | Piston and cylinder body component of hydraulic cylinder | |
| CN206346983U (en) | A kind of hydraulic cylinder elongate rod band multicore tube seal structure | |
| CN203926211U (en) | Oil resistant hermetic seal oil cylinder | |
| CN204419969U (en) | Vibration absorber sealing structure | |
| CN204175705U (en) | A kind of anti-leak oil hydraulic cylinder | |
| CN205780032U (en) | A kind of modified model oil cylinder cylinder cap seals structure | |
| CN208089451U (en) | A kind of power station governor servomotor anti-leakage structure | |
| CN206175663U (en) | Rotary shaft seal structure and for rotary shaft seal sealing washer | |
| CN204573307U (en) | A kind of butterfly buffer valve damping hydraulic cylinder side valve axle stuffing seal | |
| CN204942148U (en) | A kind of hermetic collar of cylinder front end | |
| CN203285782U (en) | Large-stroke horizontal plunger cylinder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20170901 |