CN108915711B - Shield constructs machine knife dish freezing pipeline connection structure - Google Patents
Shield constructs machine knife dish freezing pipeline connection structure Download PDFInfo
- Publication number
- CN108915711B CN108915711B CN201810689313.0A CN201810689313A CN108915711B CN 108915711 B CN108915711 B CN 108915711B CN 201810689313 A CN201810689313 A CN 201810689313A CN 108915711 B CN108915711 B CN 108915711B
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- Prior art keywords
- ring
- pipeline
- shield
- freezing
- sealing ring
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
- E21D9/08—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
- E21D9/001—Improving soil or rock, e.g. by freezing; Injections
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
- E21D9/0642—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining the shield having means for additional processing at the front end
- E21D9/0671—Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining the shield having means for additional processing at the front end with means for consolidating the rock in front of the shield by injection of consolidating substances through boreholes
Abstract
The invention discloses a shield machine cutter freezing pipeline connecting structure which comprises a cutter, a front shield partition plate and a muddy water bin positioned between the cutter and the front shield partition plate, wherein a plurality of internal freezing pipelines are arranged on the cutter, the end of each internal freezing pipeline is provided with a pipeline inlet and a pipeline outlet, the shield machine cutter freezing pipeline connecting structure also comprises a sealing bin which is isolated from the muddy water bin and is arranged in the muddy water bin, the pipeline inlet and the pipeline outlet extend into the sealing bin, the front shield partition plate is provided with a plurality of connectors communicated with the sealing bin, and the connectors are opposite to the pipeline inlet and the pipeline outlet. According to the shield machine cutter head freezing pipeline connecting structure, the pipeline inlet and outlet of the inner freezing pipeline extend into the sealing bin, when the shield machine stops to conduct shield machine cutter head freezing construction, the outer freezing pipeline is connected through the connector on the front shield partition plate, the pipeline inlet and outlet of the outer freezing pipeline and the pipeline inlet and outlet of the inner freezing pipeline are connected in the sealing bin, the sealing bin is isolated from the slurry bin, mud is prevented from flowing into the shield body when the pipelines are connected, and construction safety is guaranteed.
Description
Technical Field
The invention relates to the technical field of cutter changing of a shield machine, in particular to a cutter head freezing pipeline connecting structure of the shield machine.
Background
The shield machine is a tunnel boring machine using the shield method, the basic working principle of the shield method construction is that a cylindrical steel component is pushed forwards along the axis of the tunnel and excavates soil, the shell of the cylindrical component, namely a shield, plays a role of temporary support for the excavated tunnel section which is not lined, bears the pressure of the surrounding soil layer, sometimes bears the underground water pressure and keeps the underground water out, and the excavation, soil discharge, lining and other operations are carried out under the shield of the shield.
In the shield tunneling process, when the cutter on the cutter head of the shield tunneling machine is abraded or damaged to a certain degree, the machine needs to be stopped for maintenance or the cutter needs to be replaced. When constructors enter the storehouse and operate, the face needs to be reinforced, so that serious accidents such as casualties and the like caused by the collapse of the face are avoided. The pressurized feeding is realized by adding compressed air into the soil bin to keep the tunnel face stable, professional technicians are needed, the construction difficulty is high, the technical requirement is high, and certain safety risk exists; ground reinforcement is to carry out the concrete reinforcement to the shield tunnel face from ground, needs to manage the construction place, and is consuming time long, and construction cost is high. The shield machine cutter head freezing construction technology is a relatively novel construction technology, in the shield machine cutter head freezing construction technology, a shield machine cutter head is reformed, a freezing pipeline and freezing equipment are added, the shield machine cutter head has the function of freezing the stratum, the soil layer outside a soil bin is frozen and reinforced, the whole cutter head steel structure is changed into a huge freezing disc (isothermal body), the soil body in a compartment and the front, rear, upper and lower soil bodies of a shield machine head are frozen through the freezing cutter head, a frozen soil curtain is formed around the frozen soil body, the requirement of normal-pressure cabin opening cutter changing is met, then cabin opening cutter changing is carried out under the protection of the frozen soil curtain, the construction period can be saved, the investment is reduced, and the safety of complicated and weak geological cabin opening cutter changing is ensured.
In the shield tunneling machine cutterhead freezing construction technology, because the freezing pipelines are arranged on the front body and the cutterhead panel of the shield tunneling machine, the shield tunneling machine is an idle pipeline during normal tunneling and is not communicated with the outside, and when freezing construction is carried out, the shield tunneling machine needs to be connected with an external freezing pipeline, so that the conveying circulation of freezing media is carried out, and the freezing purpose is achieved. In the process of connecting the freezing pipeline on the cutter head with an external freezing device, the pressure relief can cause mud to flow into the shield body, and safety accidents are caused.
Disclosure of Invention
The invention aims to provide a shield tunneling machine cutter head freezing pipeline connecting structure which is safe in construction and simple in structure.
The technical scheme adopted by the invention is as follows:
the utility model provides a shield constructs machine cutter head freezing pipeline connection structure, includes blade disc, anterior shield baffle, is located the muddy water storehouse between blade disc and the anterior shield baffle, has arranged a plurality of inside freezing pipelines on the blade disc, and the end of each inside freezing pipeline is equipped with the pipeline and imports and exports, still includes the sealed storehouse isolated with muddy water storehouse in the muddy water storehouse, and each pipeline is imported and exported and stretch into in the sealed storehouse, is equipped with a plurality of interfaces that communicate with the sealed storehouse on the anterior shield baffle, and each interface is imported and exported with each pipeline and is relative.
As further improvement of the technical scheme of the invention, the sealing bin comprises an outer sealing ring, an inner sealing ring and a sealing ring positioned between the outer sealing ring and the inner sealing ring.
The end face of the cutter is provided with a plurality of cutter supporting legs which are arranged around the central axis of the cutter, and is also provided with a flange for fixedly mounting each cutter supporting leg, the end face of the outer sealing ring is tightly attached to the flange, and the end face of the inner sealing ring is tightly attached to the front shield partition plate.
As an improvement of the technical scheme of the invention, the outer sealing ring comprises a rotating ring and a raised ring vertical to the rotating ring, the inner side of the raised ring is contacted with the outer ring of the sealing ring, and the outer side of the inner sealing ring is contacted with the inner ring of the sealing ring.
Further as an improvement of the technical scheme of the invention, the outer sealing ring is fixed on each cutterhead supporting leg through welding, and the inner sealing ring is fixed on the front shield partition plate through welding.
As an improvement of the technical scheme, the sealing ring comprises a sealing inner ring and a sealing outer ring fixedly connected with the sealing inner ring, and the sealing outer ring is obliquely arranged.
As further improvement of the technical scheme of the invention, the inner sealing ring is provided with a positioning bulge for positioning the sealing ring.
Further as an improvement of the technical scheme of the invention, the front end and the rear end of the sealing ring are respectively provided with a pressing ring for pressing the sealing inner ring on the inner sealing ring, and the pressing ring close to the front shield partition plate is tightly attached to the positioning bulge.
As further improvement of the technical scheme of the invention, two sealing rings are provided.
The technical scheme is further improved, lubricating grease is introduced into the sealed bin, plugs capable of being screwed and opened are arranged on the inlet and the outlet of the pipeline, the connector is connected with a joint, the joint is connected with an external freezing pipeline, and a valve for controlling on-off and a cleaning opening for cleaning are arranged on the joint.
The invention has the beneficial effects that: this shield constructs quick-witted cutterhead refrigeration pipeline connection structure, the pipeline of inside freezing pipeline is imported and exported and is stretched into in the sealed storehouse, when shield constructs the machine and shuts down and carry out shield and constructs quick-witted cutterhead refrigeration construction, insert outside freezing pipeline through the interface on the preceding shield baffle to the pipeline of connecting outside freezing pipeline and inside freezing pipeline in the sealed storehouse is imported and exported, the sealed storehouse is isolated with muddy water storehouse, it is internal that mud gushes into the shield when preventing the connecting line, guarantee construction safety, and whole structure and connection easy operation.
Drawings
The invention will be further described with reference to the accompanying drawings in which:
FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present invention;
FIG. 2 is an enlarged view of a portion of a capsule according to an embodiment of the present invention;
fig. 3 is a partial enlarged view of a seal ring according to an embodiment of the present invention.
Detailed Description
Referring to fig. 1 to 3, the invention relates to a shield tunneling machine cutter head freezing pipeline connecting structure, which comprises a cutter head 1, a front shield partition plate 2, a muddy water bin 3 positioned between the cutter head 1 and the front shield partition plate 2, wherein a plurality of internal freezing pipelines are arranged on the cutter head 1, a pipeline inlet and outlet 4 is arranged at the end of each internal freezing pipeline, the shield tunneling machine cutter head further comprises a sealed bin 5 which is isolated from the muddy water bin 3 and is arranged in the muddy water bin 3, each pipeline inlet and outlet 4 extends into the sealed bin 5, a plurality of connectors 6 which are communicated with the sealed bin 5 are arranged on the front shield partition plate 2, and each connector 6 is opposite to each pipeline inlet and outlet 4.
In the working process of the shield tunneling machine, slurry generated by tunneling soil layers is filled in the slurry cabin 3, the internal freezing pipeline rotates along with the cutter head 1, and the front shield partition plate 2 is fixedly arranged and used for isolating the slurry in the slurry cabin 3.
The shield machine cutter head freezing pipeline connecting structure is used for connecting an internal freezing pipeline and an external freezing pipeline 7. The pipeline of inside freezing pipeline is imported and exported 4 and is stretched into in the sealed storehouse 5, when shield constructs the machine and shuts down and carry out shield structure machine cutter head freeze construction, cutter head 1 is rotatory to the pipeline and is imported and exported 4 and the position relative with interface 6 on the shield baffle 2, then insert outside freezing pipeline 7 through interface 6, and import and export 4 with the pipeline of inside freezing pipeline at 5 in-line connection outside freezing pipeline 7 in sealed storehouse, sealed storehouse 5 and muddy water storehouse 3 are isolated, it is internal to pour into the shield when preventing the connecting tube way, guarantee construction safety, and overall structure and connection easy operation. After the connection is finished, a freezing medium can be introduced from the external freezing pipeline 7 to freeze the cutter head 1.
If the sealed bin 5 is not arranged, the internal freezing pipeline and the external freezing pipeline 7 are connected in the muddy water bin 3, when the connector 6 is opened for connection, mud is gushed into the shield body due to pressure relief, and the connection operation difficulty in the muddy water bin 3 is high.
The seal cabin 5 includes an outer seal ring 51, an inner seal ring 52, and a seal ring 53 located between the outer seal ring 51 and the inner seal ring 52.
The end face of the cutter head 1 is provided with a plurality of cutter head supporting legs 8 which are arranged around the central axis of the cutter head 1, the cutter head supporting legs 8 are used for supporting the cutter head 1, and flanges 9 for fixedly mounting the cutter head supporting legs 8 are further arranged. The end surface of the outer sealing ring 51 is tightly attached to the flange 9, and the end surface of the inner sealing ring 52 is tightly attached to the front shield partition plate 2, so that mud is prevented from entering the sealed cabin 5 from the boundary between the sealed cabin 5 and the flange 9 and the boundary between the sealed cabin 5 and the front shield partition plate 2. The sealing ring 53 prevents the slurry from entering the seal chamber 5 through the gap between the outer sealing ring 51 and the inner sealing ring 52.
In the tunneling process of the shield tunneling machine, the cutterhead support legs 8, the flange 9 and the outer sealing ring 51 rotate along with the cutterhead 1, and the inner sealing ring 52 is fixed on the front shield partition plate 2. The outer sealing ring 51 is fixed on each cutterhead landing leg 8 through welding, the inner sealing ring 52 is fixed on the front shield partition plate 2 through welding, and the machining surface needs to be machined after welding to ensure the precision.
Further, the outer seal ring 51 includes a rotation ring 511 and a protrusion ring 512 perpendicular to the rotation ring 511, an inner side of the protrusion ring 512 is in contact with an outer ring of the seal ring 53, and an outer side of the inner seal ring 52 is in contact with an inner ring of the seal ring 53. In addition, the arrangement of the outer sealing ring 51 on the inside and the inner sealing ring 52 on the outside, or the arrangement of the outer sealing ring 51 with the same diameter and opposite to the inner sealing ring 52, are equivalent variants of the invention, which are included in the scope of the claims of the present application.
In a preferred embodiment of the present invention, the sealing ring 53 includes an inner sealing ring 531 and an outer sealing ring 532 fixedly connected to the inner sealing ring 531, and the outer sealing ring 532 is disposed in an inclined manner.
The mud passes through the gap between the outer sealing ring 51 and the inner sealing ring 52, and can generate certain pressure on the sealing outer ring 532, so that the obliquely arranged sealing outer ring 532 generates certain deformation, the outer diameter is increased, the sealing outer ring 532 is tightly attached to the outer sealing ring 51, and a better sealing effect is achieved.
In a preferred embodiment of the present invention, the inner seal ring 52 is provided with a positioning projection 521 for positioning the seal ring 53.
In a preferred embodiment of the present invention, the front and rear ends of the sealing ring 53 are provided with a pressing ring 533 for pressing the inner sealing ring 531 against the inner sealing ring 52, and the pressing ring 533 adjacent to the anterior shield partition 2 is closely attached to the positioning protrusion 521. The sealing ring 53 is positioned and pressed by the pressing ring 533, so that the sealing ring 53 is ensured not to generate axial movement. The clamp ring 533 can be fixed to the inner seal ring 52 by screws.
In order to enhance the sealing effect, two sealing rings 53 are provided as preferred embodiments of the present invention.
In a preferred embodiment of the present invention, lubricating grease is introduced into the sealed bin 5, a plug 41 capable of being screwed and opened is arranged on the pipeline inlet/outlet 4, the connector 61 is connected to the interface 6, the connector 61 is connected to the external freezing pipeline 7, and the connector 61 is provided with a valve 611 for controlling on-off and a cleaning port 612 for cleaning.
Lubricating grease is introduced into the sealed bin 5, particularly at the position of the sealing ring 53, so that the rotating friction force between the outer sealing ring 51 and the sealing ring 53 is reduced, the service life of the sealing ring 53 is prolonged, and the sealing effect is enhanced. The plug 41 is used for preventing lubricating grease from entering the internal freezing pipeline from the pipeline inlet/outlet 4, and when the lubricating grease is connected to the external freezing pipeline 7, the plug 41 is unscrewed and then the connector 61 is connected. The valve 611 on the joint 61 controls the on-off of the freezing pipeline, and water can be introduced through the cleaning port 612 to clean the sealed cabin 5.
The invention is not limited to the above embodiments, and those skilled in the art can make equivalent modifications or substitutions without departing from the spirit of the invention, and such equivalent modifications or substitutions are included in the scope defined by the claims of the present application.
Claims (8)
1. The utility model provides a shield constructs quick-witted cutterhead freezing pipeline connection structure which characterized in that: including blade disc (1), preceding shield baffle (2), be located muddy water storehouse (3) between blade disc (1) and preceding shield baffle (2), a plurality of inside freezing pipelines have been arranged on blade disc (1), each the end of inside freezing pipeline is equipped with pipeline import and export (4), still include in muddy water storehouse (3) with muddy water storehouse (3) isolated seal chamber (5), each pipeline import and export (4) stretch into in seal chamber (5), be equipped with on preceding shield baffle (2) with a plurality of interfaces (6) that seal chamber (5) communicate with each other, each interface (6) and each pipeline import and export (4) are relative, interface (6) are connected with and connect (61), connect (61) and be connected with outside freezing pipeline (7), seal chamber (5) include external seal ring (51), internal seal ring (52), The sealing ring (53) is positioned between the outer sealing ring (51) and the inner sealing ring (52), the outer sealing ring (51) comprises a rotating ring (511) and a raised ring (512) perpendicular to the rotating ring (511), the inner side of the raised ring (512) is in contact with the outer ring of the sealing ring (53), and the outer side of the inner sealing ring (52) is in contact with the inner ring of the sealing ring (53).
2. The shield tunneling machine cutterhead freezing pipeline connecting structure according to claim 1, characterized in that: be equipped with on blade disc (1) terminal surface and center on a plurality of blade disc landing legs (8) that blade disc (1) the central axis was arranged, still be equipped with fixed mounting each flange (9) of blade disc landing leg (8), the terminal surface of outer seal ring (51) is hugged closely flange (9), the terminal surface of inner seal ring (52) is hugged closely anterior shield baffle (2).
3. The shield tunneling machine cutterhead freezing pipeline connecting structure according to claim 2, characterized in that: the outer sealing ring (51) is fixed on each cutterhead supporting leg (8) through welding, and the inner sealing ring (52) is fixed on the front shield partition plate (2) through welding.
4. The shield tunneling machine cutterhead freezing pipeline connecting structure according to claim 1, characterized in that: the sealing ring (53) comprises a sealing inner ring (531) and a sealing outer ring (532) fixedly connected with the sealing inner ring (531), and the sealing outer ring (532) is obliquely arranged.
5. The shield tunneling machine cutterhead freezing pipeline connecting structure according to claim 4, characterized in that: and a positioning bulge (521) used for positioning the sealing ring (53) is arranged on the inner sealing ring (52).
6. The shield tunneling machine cutterhead freezing pipeline connecting structure according to claim 5, characterized in that: and the front end and the rear end of the sealing ring (53) are respectively provided with a pressing ring (533) which presses the sealing inner ring (531) on the inner sealing ring (52), and the pressing ring (533) close to the front shield partition plate (2) is tightly attached to the positioning bulge (521).
7. The shield tunneling machine cutterhead freezing pipeline connecting structure according to claim 4, characterized in that: the number of the sealing rings (53) is two.
8. The shield tunneling machine cutterhead freezing pipeline connecting structure according to claim 1, characterized in that: lubricating grease is introduced into the sealed bin (5), a plug (41) which can be opened by screwing is arranged on the pipeline inlet and outlet (4), and a valve (611) for controlling on-off and a cleaning opening (612) for cleaning are arranged on the joint (61).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810689313.0A CN108915711B (en) | 2018-06-28 | 2018-06-28 | Shield constructs machine knife dish freezing pipeline connection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810689313.0A CN108915711B (en) | 2018-06-28 | 2018-06-28 | Shield constructs machine knife dish freezing pipeline connection structure |
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| Publication Number | Publication Date |
|---|---|
| CN108915711A CN108915711A (en) | 2018-11-30 |
| CN108915711B true CN108915711B (en) | 2020-02-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810689313.0A Active CN108915711B (en) | 2018-06-28 | 2018-06-28 | Shield constructs machine knife dish freezing pipeline connection structure |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109538226B (en) * | 2019-01-14 | 2024-03-08 | 中铁工程装备集团有限公司 | Novel cutter head freezing static pipeline arrangement structure |
| CN110080786A (en) * | 2019-04-04 | 2019-08-02 | 中船重型装备有限公司 | A kind of shield machine and its guard method with end face freezing system |
| CN109989764A (en) * | 2019-05-21 | 2019-07-09 | 中国铁建重工集团股份有限公司 | A kind of normal pressure tool changing cutterhead with freezing function |
| CN113464151A (en) * | 2021-07-14 | 2021-10-01 | 中铁工程装备集团有限公司 | Novel normal pressure cutter head and shield machine |
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| JPH04360989A (en) * | 1991-06-07 | 1992-12-14 | Okumura Corp | Method of joining shield machine underground and joining shield machine therefor |
| CN1900521A (en) * | 2005-07-21 | 2007-01-24 | 中国石油化工股份有限公司河南油田分公司石油工程技术研究院 | Fishable linear motor reciprocating pump |
| CN105298505A (en) * | 2015-11-16 | 2016-02-03 | 中国铁建重工集团有限公司 | Earth pressure balance shield machine with freezing function and tool change method thereof |
| CN105422108A (en) * | 2015-11-16 | 2016-03-23 | 广东华隧建设股份有限公司 | Tool changing method based on slurry balanced shield machine with freezing function |
| CN107387757A (en) * | 2017-06-30 | 2017-11-24 | 嘉兴职业技术学院 | Case seal structure |
| CN107387100A (en) * | 2017-08-22 | 2017-11-24 | 中铁工程装备集团有限公司 | A kind of shield machine for possessing freezing and reinforcing function |
-
2018
- 2018-06-28 CN CN201810689313.0A patent/CN108915711B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04360989A (en) * | 1991-06-07 | 1992-12-14 | Okumura Corp | Method of joining shield machine underground and joining shield machine therefor |
| CN1900521A (en) * | 2005-07-21 | 2007-01-24 | 中国石油化工股份有限公司河南油田分公司石油工程技术研究院 | Fishable linear motor reciprocating pump |
| CN105298505A (en) * | 2015-11-16 | 2016-02-03 | 中国铁建重工集团有限公司 | Earth pressure balance shield machine with freezing function and tool change method thereof |
| CN105422108A (en) * | 2015-11-16 | 2016-03-23 | 广东华隧建设股份有限公司 | Tool changing method based on slurry balanced shield machine with freezing function |
| CN107387757A (en) * | 2017-06-30 | 2017-11-24 | 嘉兴职业技术学院 | Case seal structure |
| CN107387100A (en) * | 2017-08-22 | 2017-11-24 | 中铁工程装备集团有限公司 | A kind of shield machine for possessing freezing and reinforcing function |
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| CN108915711A (en) | 2018-11-30 |
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Effective date of registration: 20210929 Address after: 510228 15 tower, C tower, Paoli Plaza, 28 Chen Yue Road, Pazhou, Haizhuqu District, Guangzhou, Guangdong Patentee after: CHINA TUNNEL CONSTRUCTION GROUP Co.,Ltd. GUANGDONG Patentee after: GUANGZHOU METRO GROUP Co.,Ltd. Patentee after: Guangzhou Power Supply Bureau of Guangdong Power Grid Co.,Ltd. Address before: 510228 15 tower, C tower, Paoli Plaza, 28 Chen Yue Road, Pazhou, Haizhuqu District, Guangzhou, Guangdong Patentee before: CHINA TUNNEL CONSTRUCTION GROUP Co.,Ltd. GUANGDONG Patentee before: GUANGZHOU METRO GROUP Co.,Ltd. Patentee before: GUANGZHOU POWER SUPPLY Co.,Ltd. |