CN112984115B - Hinge sealing device of shield machine - Google Patents
Hinge sealing device of shield machine Download PDFInfo
- Publication number
- CN112984115B CN112984115B CN202110294384.2A CN202110294384A CN112984115B CN 112984115 B CN112984115 B CN 112984115B CN 202110294384 A CN202110294384 A CN 202110294384A CN 112984115 B CN112984115 B CN 112984115B
- Authority
- CN
- China
- Prior art keywords
- ring
- ring sleeve
- groove
- shield
- sealing
- 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.)
- Active
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 71
- 230000005641 tunneling Effects 0.000 claims abstract description 23
- 230000000149 penetrating effect Effects 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 239000002689 soil Substances 0.000 description 6
- NMFHJNAPXOMSRX-PUPDPRJKSA-N [(1r)-3-(3,4-dimethoxyphenyl)-1-[3-(2-morpholin-4-ylethoxy)phenyl]propyl] (2s)-1-[(2s)-2-(3,4,5-trimethoxyphenyl)butanoyl]piperidine-2-carboxylate Chemical compound C([C@@H](OC(=O)[C@@H]1CCCCN1C(=O)[C@@H](CC)C=1C=C(OC)C(OC)=C(OC)C=1)C=1C=C(OCCN2CCOCC2)C=CC=1)CC1=CC=C(OC)C(OC)=C1 NMFHJNAPXOMSRX-PUPDPRJKSA-N 0.000 description 4
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/06—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
- F16J15/3232—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip having two or more lips
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3268—Mounting of sealing rings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses a shield tunneling machine hinge sealing device, which comprises: the fixed ring sleeve is characterized in that an annular groove is formed in the inner annular surface of the fixed ring sleeve, the annular groove is arranged along the circumferential direction of the fixed ring sleeve, and the groove wall of the annular groove is arc-shaped; the movable ring sleeve is movably arranged in the fixed ring sleeve in a penetrating manner, the outer ring surface of the movable ring sleeve is protruded to form a convex ring, the outer side surface of the convex ring is arc-shaped, the radian of the outer side surface of the convex ring is matched with the radian of the groove wall of the annular groove, and the arc top of the outer side surface of the convex ring is slidably arranged in the annular groove; the hinge ring is movably arranged in the movable ring sleeve in a penetrating manner; a first seal member for sealing between the movable collar and the hinge ring, mounted to an inner annulus of the movable collar; and a second seal for sealing between the groove wall and the arc top, mounted on the groove wall. The invention solves the problems of large turning radius and easy water leakage of the shield machine caused by the traditional hinged sealing device.
Description
Technical Field
The invention relates to the technical field of shield machines, in particular to a shield machine hinge sealing device.
Background
At present, most shield machines are designed with hinged sealing devices, and the main functions are as follows: in the tunneling process of the shield machine, as a certain pressure is required to be ensured in the soil bin to resist the water and soil pressure of the excavated face, all channels communicated with the soil bin are required to be blocked, the pressure loss in the soil bin is prevented, so that the stability of the excavated face is ensured, and a hinged sealing ring is designed at a hinged position to ensure the relative balance of the pressure in the soil bin; when the shield machine turns, a certain angle can be formed in the hinging position of the shield body through the extension or retraction of the hinging oil cylinder, so that a part of the area of the hinging position can have a gap increase, the other part of the area of the hinging position can have a gap decrease, and the sealing ring can be ensured to effectively fill the gap when the gap decreases or increases through the elastic compression of the hinging seal, so that the external sealing performance of the shield body is ensured; meanwhile, the shield machine can smoothly realize turning tunneling through the angle deflection of the shield body.
At present, a traditional hinge sealing device is generally composed of a lip sealing ring and an air bag sealing ring, wherein the lip sealing ring plays a sealing role in normal tunneling of a shield machine, and when the lip sealing ring fails and cannot play a sealing role, the sealing ring is filled with compressed air, so that the failed hinge sealing ring is replaced under the condition of ensuring the sealing performance of the air bag sealing ring.
The conventional hinge sealing device has the following disadvantages: the turning radius of the shield machine is large; because of the space limitation in the hinge device, the installation quantity of the sealing rings is limited, and when the sealing rings and the air bag sealing rings are invalid, the sealing performance of the whole hinge device cannot be ensured, so that the conditions of soil bin pressure reduction, hinge device water leakage and the like can be possibly caused.
Disclosure of Invention
In order to overcome the defects existing in the prior art, the hinge sealing device of the shield machine is provided at present, so that the problems that the turning radius of the shield machine is large and water is easy to leak caused by the traditional hinge sealing device are solved.
In order to achieve the above object, a hinge sealing device of a shield tunneling machine is provided, comprising:
the inner annular surface of the fixed ring sleeve is provided with an annular groove, the annular groove is arranged along the circumferential direction of the fixed ring sleeve, and the groove wall of the annular groove is arc-shaped;
the movable ring sleeve is movably arranged in the fixed ring sleeve in a penetrating manner, the outer ring surface of the movable ring sleeve is protruded to form a convex ring, the outer side surface of the convex ring is arc-shaped, the radian of the outer side surface of the convex ring is matched with the radian of the groove wall of the annular groove, and the arc top of the outer side surface of the convex ring is slidably arranged in the annular groove;
the hinge ring is used for connecting the shield tail and movably penetrates through the movable ring sleeve;
a first seal member for sealing between the movable collar and the hinge ring, mounted to an inner annulus of the movable collar; and
a second seal for sealing between the groove wall and the arc top is mounted on the groove wall.
Further, the inner ring surface of the rear end of the middle shield is provided with a containing groove, the fixing ring sleeve is embedded in the containing groove, the end surface of the rear end of the middle shield is detachably provided with a supporting ring, the inner side of the supporting ring is provided with a locking flange extending into the containing groove, and the locking flange is pressed against one side, far away from the front end of the middle shield, of the fixing ring sleeve.
Further, the fixed ring sleeve comprises two split ring sleeves which are coaxially connected, an annular gap is formed at one side of the opposite ends of the split ring sleeves, which is close to the inner annular surface of the split ring sleeve, the inner wall of the annular gap is arc-shaped, and the annular gaps of the split ring sleeves are enclosed to form the annular groove.
Further, a first locking hole is formed in the end face of the opposite end of one split ring sleeve, a second locking hole which is aligned to and penetrates through the first locking hole is formed in the other split ring sleeve, and a first fastening piece is inserted into the second locking hole and the first locking hole.
Further, the inner walls of the annular gaps of the two split ring sleeves respectively form mounting grooves, the mounting grooves are provided with a circle along the circumferential direction of the split ring sleeves, and the second sealing piece is mounted in the mounting grooves.
Further, the inner annular surface of the movable annular sleeve is provided with a plurality of limiting rings, a clamping space is formed between adjacent limiting rings, and the first sealing piece is embedded in the clamping space.
Further, the first sealing element is a lip sealing ring.
The shield tunneling machine hinge sealing device has the beneficial effects that after the shield tunneling machine hinge sealing device is arranged on a shield tunneling machine, when the shield tunneling machine is tunneling normally, the first sealing piece and the second sealing piece are blocked to realize sealing, and the whole shield tunneling machine hinge sealing device is in a normal sealing state; when the shield machine needs to turn, part of the articulated oil cylinders extend, part of the articulated oil cylinders retract, at the moment, the articulated ring and the middle shield form a certain included angle, the movable lantern ring rotates along with the rotation of the articulated ring, namely the movable lantern ring always keeps a relative coaxial state with the articulated ring, and the shield machine articulated sealing device reduces the turning radius of the shield machine; in addition, the first sealing element is always attached to the outer ring surface of the hinge ring, so that the sealing performance of the hinge sealing device of the shield machine is guaranteed to be good.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the following drawings, in which:
fig. 1 is a schematic structural diagram of a hinge sealing device of a shield tunneling machine according to an embodiment of the present invention.
Detailed Description
The present application is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be noted that, for convenience of description, only the portions related to the invention are shown in the drawings.
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Fig. 1 is a schematic structural diagram of a shield tunneling machine hinge sealing device according to an embodiment of the present invention, and referring to fig. 1, the present invention provides a shield tunneling machine hinge sealing device, including: a fixed collar 3, a movable collar 4, a hinge collar 5, a first seal 6 and a second seal 7.
Specifically, the fixing ring sleeve 3 is connected with the tail end of the middle shield 1. The inner annular surface of the fixed ring sleeve 3 is provided with an annular groove. The ring groove is arranged along the circumferential direction of the fixed ring sleeve 3. The groove wall of the ring groove is arc-shaped. In this embodiment, the width of the ring groove is equal to the width of the notch of the ring groove. The groove wall of the ring groove is spherical.
The movable ring sleeve 4 is movably arranged in the fixed ring sleeve 3 in a penetrating way. The outer circumferential surface of the movable collar 4 is convex to form a convex ring 41. The outer side surface of the convex ring 41 is arc-shaped, and the radian of the outer side surface of the convex ring 41 is matched with the radian of the groove wall of the annular groove. The arc top of the outer side surface of the convex ring 41 is slidingly arranged in the annular groove. Both ends of the outer side surface of the convex ring 41 extend to the outer side of the ring groove, respectively. In this embodiment, the outer side of the convex ring is spherical. The movable ring sleeve can rotate in a universal way in the fixed ring sleeve.
The hinge ring 5 is used for connecting the front end of the shield tail. The hinge ring 5 is movably arranged in the movable ring sleeve 4 in a penetrating way, and a first sealing piece 6 is arranged on the inner ring surface of the movable ring sleeve 4. The first seal 6 is used to seal between the movable collar 4 and the hinged ring 5.
The second seal 7 is mounted on the groove wall. The second seal 7 is used to seal off between the groove wall and the arc top.
After the shield tunneling machine hinged sealing device is arranged on the shield tunneling machine, when the shield tunneling machine is tunneling normally, the first sealing piece and the second sealing piece are plugged to realize sealing, and the whole shield tunneling machine hinged sealing device is in a normal sealing state; when the shield machine needs to turn, part of the articulated oil cylinders extend, part of the articulated oil cylinders retract, at the moment, the articulated ring and the middle shield form a certain included angle, the movable lantern ring rotates along with the rotation of the articulated ring, namely the movable lantern ring always keeps a relative coaxial state with the articulated ring, and the shield machine articulated sealing device reduces the turning radius of the shield machine; in addition, the first sealing element is always attached to the outer ring surface of the hinge ring, so that the sealing performance of the hinge sealing device of the shield machine is guaranteed to be good.
In this embodiment, the inner ring surface of the rear end of the middle shield 1 is formed with a receiving groove. The fixed ring sleeve 3 is embedded in the accommodating groove. The end face of the rear end of the middle shield 1 is detachably provided with a supporting top ring 11. The locking flange 111 extending into the receiving groove is formed on the inner side of the top ring 11. The locking flange 111 is pressed against the side of the fixing collar 3 remote from the front end of the shield 1.
As a preferred embodiment, the end face of the rear end of the middle shield is provided with a first fastening hole. The supporting top ring is provided with a through second fastening hole. The second fastening hole is aligned with the first fastening hole. The second fastening hole and the first fastening hole are inserted with a second fastening piece.
As a preferred embodiment, the fixing collar 3 comprises two split collars 31 connected coaxially. The split collars 31 have opposite ends and opposite ends, respectively. Opposite ends of the two split collars 31 are disposed opposite each other. One side of the opposite ends of the split ring cover 31, which is close to the inner annular surface of the split ring cover 31, forms an annular gap. The inner wall of the annular gap is arc-shaped. The annular gaps of the two split ring sleeves 31 are enclosed to form an annular groove.
In this embodiment, the end surfaces of the opposite ends of one split ring 31 are provided with first locking holes, the other split ring 31 is provided with second locking holes aligned with and penetrating the first locking holes, and the first locking members 32 are inserted into the second locking holes and the first locking holes.
As a preferred embodiment, the first fastening hole, the second fastening hole, the first locking hole and the second locking hole are threaded holes. The first and second fastening members are bolts.
In this embodiment, the second seal is provided with two passes. Specifically, the inner walls of the annular gaps of the two split ring covers 31 respectively form mounting grooves. The mounting groove is provided in a circle along the circumferential direction of the split ring cover 31. The second seal 7 is mounted in the mounting groove.
As a preferred embodiment, the inner ring surface of the movable ring bush 4 is provided with a plurality of limiting rings, and a clamping space is formed between adjacent limiting rings. The first seal 6 is embedded in the clamping space. The first seal 6 is a lip seal.
As a preferred implementation mode, two adjacent limiting rings oppositely extend to form a limiting flange, and the limiting flange is pressed against the root of the lip sealing ring.
In this embodiment, the length of the movable collar is greater than the length of the fixed collar, and the width of the collar of the movable collar is greater than the length of the fixed collar. When the movable ring sleeve universally rotates in the fixed ring sleeve, the arc top of the convex ring is always arranged in the ring groove in a sliding way.
The foregoing description is only of the preferred embodiments of the present application and is presented as a description of the principles of the technology being utilized. It will be appreciated by persons skilled in the art that the scope of the invention referred to in this application is not limited to the specific combinations of features described above, but it is intended to cover other embodiments in which any combination of features described above or equivalents thereof is possible without departing from the spirit of the invention. Such as the above-described features and technical features having similar functions (but not limited to) disclosed in the present application are replaced with each other.
Claims (7)
1. A shield tunneling machine hinge seal apparatus, comprising:
the inner annular surface of the fixed ring sleeve is provided with an annular groove, the annular groove is arranged along the circumferential direction of the fixed ring sleeve, and the groove wall of the annular groove is arc-shaped;
the movable ring sleeve is movably arranged in the fixed ring sleeve in a penetrating manner, the outer ring surface of the movable ring sleeve is protruded to form a convex ring, the outer side surface of the convex ring is arc-shaped, the radian of the outer side surface of the convex ring is matched with the radian of the groove wall of the annular groove, and the arc top of the outer side surface of the convex ring is slidably arranged in the annular groove;
the hinge ring is used for connecting the shield tail and movably penetrates through the movable ring sleeve;
a first seal member for sealing between the movable collar and the hinge ring, mounted to an inner annulus of the movable collar; and
a second seal for sealing between the groove wall and the arc top is mounted on the groove wall.
2. The shield machine hinged sealing device according to claim 1, wherein an accommodating groove is formed in an inner ring surface of the rear end of the middle shield, the fixing ring sleeve is embedded in the accommodating groove, a supporting ring is detachably arranged on the end surface of the rear end of the middle shield, a locking flange extending into the accommodating groove is formed on the inner side of the supporting ring, and the locking flange is pressed against one side, far away from the front end of the middle shield, of the fixing ring sleeve.
3. The hinged sealing device of the shield machine according to claim 1, wherein the fixed ring sleeve comprises two split ring sleeves which are coaxially connected, an annular gap is formed on one side, close to the inner annular surface of the split ring sleeve, of the opposite ends of the two split ring sleeves, the inner wall of the annular gap is arc-shaped, and the annular gaps of the two split ring sleeves are enclosed to form the annular groove.
4. The shield tunneling machine hinge sealing device according to claim 3, wherein a first locking hole is formed in an end face of an opposite end of one split ring sleeve, a second locking hole which is aligned with and penetrates through the first locking hole is formed in the other split ring sleeve, and a first locking piece is inserted into the second locking hole and the first locking hole.
5. The hinged sealing apparatus of claim 3, wherein the inner walls of the annular gaps of the split ring sleeves respectively form a mounting groove, the mounting groove is provided with a circle along the circumferential direction of the split ring sleeve, and the second sealing member is mounted in the mounting groove.
6. The shield tunneling machine hinge sealing device according to claim 1, wherein the inner ring surface of the movable ring cover is provided with a plurality of limiting rings, a clamping space is formed between adjacent limiting rings, and the first sealing element is embedded in the clamping space.
7. The shield tunneling machine hinge seal of claim 6, wherein said first seal is a lip seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110294384.2A CN112984115B (en) | 2021-03-19 | 2021-03-19 | Hinge sealing device of shield machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110294384.2A CN112984115B (en) | 2021-03-19 | 2021-03-19 | Hinge sealing device of shield machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112984115A CN112984115A (en) | 2021-06-18 |
| CN112984115B true CN112984115B (en) | 2023-06-13 |
Family
ID=76333325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110294384.2A Active CN112984115B (en) | 2021-03-19 | 2021-03-19 | Hinge sealing device of shield machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112984115B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105952463A (en) * | 2016-06-27 | 2016-09-21 | 中国铁建重工集团有限公司 | Observation device for observing soil cabin of shield tunneling machine and shield tunneling machine comprising same |
| CN206942765U (en) * | 2017-06-07 | 2018-01-30 | 中交第二航务工程局有限公司 | Shield tunnel door seal device |
| CN209385136U (en) * | 2019-01-03 | 2019-09-13 | 中建八局轨道交通建设有限公司 | Shield launching, the air bag device for receiving portal sealing |
| CN111963182A (en) * | 2020-06-01 | 2020-11-20 | 中建八局轨道交通建设有限公司 | Construction method for replacing tail brush of shield tunneling machine |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3789455T2 (en) * | 1987-12-21 | 1994-06-30 | Komatsu Mfg Co Ltd | SEALING STRUCTURE FOR MAIN BEARING OF A TUNNEL MACHINE. |
| CN204783028U (en) * | 2015-07-06 | 2015-11-18 | 中铁工程装备集团有限公司 | It constructs novel articulated sealing device initiatively to articulate formula shield |
| CN105464672B (en) * | 2015-12-21 | 2018-03-02 | 江苏凯宫隧道机械有限公司 | Balancing earth-pressure shielding machine active articulated mounting |
| CN207138854U (en) * | 2017-09-15 | 2018-03-27 | 株洲汉和工业设备有限公司 | A kind of isolating seal mechanism of vacuum atomizing powder manufacturing apparatus |
| CN207315384U (en) * | 2017-10-16 | 2018-05-04 | 中船重型装备有限公司 | A kind of shield machine shield body articulated mounting |
| CN108590673A (en) * | 2018-01-11 | 2018-09-28 | 中国铁建重工集团有限公司 | Hinge seal device and shield machine with the hinge seal device |
| CN207944943U (en) * | 2018-03-15 | 2018-10-09 | 中铁工程装备集团有限公司 | A kind of hinge seal device in hole convenient for changeing |
| CN208089946U (en) * | 2018-03-21 | 2018-11-13 | 广州嘉诺工业技术有限公司 | A kind of hinged air sac sealing structure for shield machine |
| CN108868785A (en) * | 2018-06-12 | 2018-11-23 | 江苏锐成机械有限公司 | Shield machine with more piece spherical surface articulated structure |
| IT201900012744A1 (en) * | 2019-07-24 | 2021-01-24 | Skf Ab | SEALING DEVICE FOR HUB-WHEEL UNIT |
| CN212054696U (en) * | 2020-04-10 | 2020-12-01 | 中建八局轨道交通建设有限公司 | Sealing device for hinged part of shield tunneling machine |
| CN212027792U (en) * | 2020-04-30 | 2020-11-27 | 中铁工程装备集团有限公司 | Well shield hinge ring refabrication structure |
-
2021
- 2021-03-19 CN CN202110294384.2A patent/CN112984115B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105952463A (en) * | 2016-06-27 | 2016-09-21 | 中国铁建重工集团有限公司 | Observation device for observing soil cabin of shield tunneling machine and shield tunneling machine comprising same |
| CN206942765U (en) * | 2017-06-07 | 2018-01-30 | 中交第二航务工程局有限公司 | Shield tunnel door seal device |
| CN209385136U (en) * | 2019-01-03 | 2019-09-13 | 中建八局轨道交通建设有限公司 | Shield launching, the air bag device for receiving portal sealing |
| CN111963182A (en) * | 2020-06-01 | 2020-11-20 | 中建八局轨道交通建设有限公司 | Construction method for replacing tail brush of shield tunneling machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112984115A (en) | 2021-06-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101628057B1 (en) | Radial shaft seal, radial shaft seal assembly and method of installation | |
| EP2721327B1 (en) | Radial shaft seal, radial shaft seal assembly and method of installation | |
| CN108350678A (en) | Swivel joint for work machine | |
| JPH0713476B2 (en) | Seal ring | |
| CN202381893U (en) | Quick connection device of self-sealing aligning waterway of mining flameproof equipment | |
| JPH0559314B2 (en) | ||
| CN112984115B (en) | Hinge sealing device of shield machine | |
| KR19980042576A (en) | Fine pipe connector | |
| CN205534706U (en) | Novel elastic expansion water pipe sleeve spare and elastic expansion water pipe | |
| US6234540B1 (en) | Sealing arrangement | |
| CN204201076U (en) | A kind of hinge seal device and the shield machine comprising hinge seal device | |
| FI72189B (en) | Circuit arrangement | |
| CN109944554A (en) | A kind of combined drill rod | |
| US9651154B2 (en) | Radial shaft seal, radial shaft seal assembly and method of installation | |
| CN204829047U (en) | Glue connection with expandable sealing circle | |
| CN108590673A (en) | Hinge seal device and shield machine with the hinge seal device | |
| US4549740A (en) | Coupling guard seal assembly | |
| KR101332826B1 (en) | Swivel joint | |
| CN105757254A (en) | Floating type static spring seat and mechanical sealing structure thereof | |
| CN211501975U (en) | Low-abrasion rotary compensator | |
| CN202597969U (en) | High-speed rotating joint | |
| CN115614566B (en) | High-performance sealing element for engineering machinery | |
| CN117704038B (en) | Vertical heavy-load oil-tight gearbox | |
| CN212616913U (en) | Shock absorber joint assembly | |
| WO2001034985A1 (en) | A locking device for a shaft |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |