CN208502773U - A kind of shield machine being adapted to existing tunnel excavation - Google Patents
A kind of shield machine being adapted to existing tunnel excavation Download PDFInfo
- Publication number
- CN208502773U CN208502773U CN201821023423.5U CN201821023423U CN208502773U CN 208502773 U CN208502773 U CN 208502773U CN 201821023423 U CN201821023423 U CN 201821023423U CN 208502773 U CN208502773 U CN 208502773U
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- Prior art keywords
- shield
- steel bushing
- tunnel
- existing tunnel
- pressure
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Abstract
The utility model proposes a kind of shield machines for being adapted to existing tunnel excavation, the host system of pressure-retaining system and rear including front, the pressure-retaining system includes tractor, pressure maintaining component and steel bushing, the front end of tractor and steel bushing is hinged, the pressure maintaining component of several groups is sequentially arranged on the side wall of steel bushing, every group of pressure maintaining component includes sealing system, support system and grease injection port, and sealing system is located at the front of grease injection port, and support system is located at the rear of grease injection port.The utility model solves the problems, such as that existing existing tunnel digs, and digs for tunnel and provides a kind of novel device, not only ensure that safety for tunnel engineering, but also improve tunnel utilization rate, save a large amount of construction costs.
Description
Technical field
The utility model relates to constructing tunnels, particularly relate to a kind of shield machine for being adapted to existing tunnel excavation.
Background technique
Currently, earth pressure balanced shield is a kind of heading equipment for Urban Underground road channel construction, setting
Standby input cost, construction cost all have advantage to construction environment influence, safety etc., have more and more wide application prospect,
It is a kind of new and effective heading equipment.
In recent years, the tunnels quantity such as subway, cable and draining and scale are more and more huger, the various tunnels constructed
Road by large-scale eaerthquake damage or long neglected and in disrepair causes quality degradation or original Tunnel Design size cannot after operation
When meeting the increasingly use demand of rapid growth, it would be desirable to carry out maintenance or the again new tunnel of planning construction to original tunnel
Route, in this way maintenance, which carry out secondary lining, will cause the diminution of existing tunnel headroom, and plans route again it will cause be constructed into
Originally it greatly increases and that there are construction risks is larger, therefore tunnel can be carried out on the basis of existing tunnel and digged, both can be improved
Tunnel utilization rate, and construction risk can be reduced.
Therefore a kind of shield that can satisfy and digged on the basis of existing tunnel is designed, is not only digged for existing tunnel
It also is the project with far-reaching significance to provide a kind of new approaches after 100 year service life of shield.
Utility model content
The utility model proposes a kind of shield machines for being adapted to existing tunnel excavation, solve in the prior art to original tunnel
Road, which carries out maintenance, will cause headroom diminution or plans that new tunnel line of constructing will increase construction cost and improve construction risk again
The problem of.The tunnels such as existing subway, cable and draining are carrying out supporting usually using techniques such as section of jurisdiction or gunite concretes,
Guarantee tunnel safety.The utility model is direct by digging shield cutter under the premise of guaranteeing that entire tunnel digs safety
Existing tunnel section of jurisdiction or the cutting of shotcrete lining layer are excavated, the dregs that gets off is cut and passes through screw machine and rear mating
Belt feeder is discharged outside hole.And the utility model by tractor offer by being dragged in the existing a set of steel bushing of section of jurisdiction interior design
Pulling force moves forward, and design has sealing system on the outside of steel bushing, makes face and existing section of jurisdiction tunnel pressure isolation, guarantees area
Face pressure dynamic balance.The design of steel bushing inner ring has support system, can be controlled by hydraulic cylinder support system holding out against existing section of jurisdiction
Inner wall provides the counter-force of face.In shield driving, traction vehicle speed can be adjusted according to driving speed, guarantees to excavate in storehouse
Portion's pressure is stablized.This equipment is suitable for the lower tunnel of section of jurisdiction intensity, directly excavates by the cutting of existing section of jurisdiction by cutterhead, whole
Machine structure is relatively easy, improves the construction efficiency for digging tunnel.
The technical solution of the utility model is achieved in that a kind of shield machine for being adapted to existing tunnel excavation, including
The pressure-retaining system in front and the host system at rear, the pressure-retaining system include tractor, pressure maintaining component and steel bushing, traction
The front end of vehicle and steel bushing is hinged, and the pressure maintaining component of several groups is sequentially arranged on the side wall of steel bushing, and every group of pressure maintaining component includes
Sealing system, support system and grease injection port, sealing system are located at the front of grease injection port, and support system is located at grease note
The rear of entrance.
The tractor is hinged by connecting pin and steel bushing.
The host system includes shield body, digs cutterhead, main driving, propelling cylinder, duct piece installation machine, screw conveyor
And partition, partition are mounted on the front end of shield body, partition is equipped with main driving, digs cutterhead in front of main driving driving shield body, push away
Oil inlet cylinder is mounted on the top of shield body, and duct piece installation machine is mounted on the middle part of shield body, and screw conveyor is mounted on the lower section of shield body.
The cutterhead that digs is arc cutterhead.
The tail portion of the shield body is equipped with shield tail brush.
The utility model solves the problems, such as that existing existing tunnel digs, and digs for tunnel and provides a kind of novel device,
Not only it ensure that safety for tunnel engineering, but also improve tunnel utilization rate, save a large amount of construction costs.
A. when shield machine promotes, cutterhead directly cuts the concrete lining course of existing section of jurisdiction or injection, and process is simple,
Improve tunnel boring efficiency.
B. by a set of steel bushing of existing tunnel interior design, so that completely cutting off inside area surface pressure and existing tunnel
It opens, guarantees face pressure balance, keep shield-tunneling construction safer；
C. steel bushing can provide the reaction force of face generation with stretching existing tunnel inner wall, guarantee to excavate storehouse pressure
Not unstability.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it is also possible to obtain other drawings based on these drawings.
FIG. 1 is a schematic structural view of the utility model.
In figure: tractor -1, existing section of jurisdiction -2, connecting pin -3, sealing system -4, support system -5, grease injection port -6,
Steel bushing -7 digs cutterhead -8, main driving -9, propelling cylinder -10, digs section of jurisdiction -11, duct piece installation machine -12, helical feed
Machine -13, excavates storehouse -15 at partition -14.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are under that premise of not paying creative labor
Every other embodiment obtained, fall within the protection scope of the utility model.
As shown in Figure 1, a kind of shield machine for being adapted to existing tunnel excavation, the master of pressure-retaining system and rear including front
Machine system, the pressure-retaining system include tractor 1, pressure maintaining component and steel bushing 7, the front end hinge of tractor 1 and steel bushing 7
It connects, the pressure maintaining component of several groups is sequentially arranged on the side wall of steel bushing 7, and every group of pressure maintaining component includes sealing system 4, support system
5 and grease injection port 6, sealing system 4 be located at the front of grease injection port 6, support system 5 is located at the rear of grease injection port 6.
The tractor 1 is hinged by connecting pin 3 and steel bushing 7.
The host system includes shield body, digs cutterhead 8, main driving 9, propelling cylinder 10, duct piece installation machine 12, spiral
Conveyer 13 and partition 14, partition 14 are mounted on the front end of shield body, and partition 14 is equipped with main driving 9, before main driving 9 drives shield body
Side digs cutterhead 8, and propelling cylinder 10 is mounted on the top of shield body, and duct piece installation machine 12 is mounted on the middle part of shield body, spiral transferring
The lower section for sending machine 13 to be mounted on shield body.
The cutterhead 8 that digs is arc cutterhead.
The tail portion of the shield body is equipped with shield tail brush.
The utility model includes tractor, existing section of jurisdiction 2, connecting pin, sealing system, support system, grease injection port, steel
Sleeve digs cutterhead, main driving, propelling cylinder, digs section of jurisdiction 11, duct piece installation machine, screw conveyor, anterior shield partition and excavation
Storehouse.
Shield machine holds out against expanding section of jurisdiction 11 by propelling cylinder and tunnels forward, digs cutterhead and is rotated by main driving driving,
Existing section of jurisdiction and stratum are directly cut, steel bushing and partition form the excavation storehouse 15 for having pressure, cut the dregs to get off and flow into
Storehouse 15 is excavated, is drained into dregs outside hole by screw conveyor.After shield stepping one circulation, it will be expanded by duct piece installation machine
It digs in pipe sheet assembling to tail shield, completes the erecting ring in whole for digging section of jurisdiction.
It is excavated in storehouse 15 due to shield in driving and needs to establish certain pressure, which can generate a promotion steel bushing
Active force, therefore steel bushing interior design support system, in shield driving, support system is held out against existing by oil cylinder control
Tunnel duct piece inner wall guarantees that steel bushing is not moved forward in shield driving, makes excavation storehouse that decompression risk not occur.In driving one
Steel bushing migration can be drawn after set a distance by tractor.
To guarantee to excavate storehouse 15 and existing tunnel pressure isolation, design design has sealing system on the outside of steel bushing, passes through oil
Rouge inlet continues to inject grease into sealing system ring cavity, guarantees that entire storehouse internal pressure of excavating does not leak.
It carries out that next circulation can be carried out after completing an endless tube piece above.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection scope within.
Claims (5)
1. a kind of shield machine for being adapted to existing tunnel excavation, the host system of pressure-retaining system and rear including front is special
Sign is: the pressure-retaining system includes tractor (1), pressure maintaining component and steel bushing (7), tractor (1) and steel bushing (7)
Front end is hinged, and the pressure maintaining component of several groups is sequentially arranged on the side wall of steel bushing (7), and every group of pressure maintaining component includes sealing system
(4), support system (5) and grease injection port (6), sealing system (4) are located at the front of grease injection port (6), support system (5)
Positioned at the rear of grease injection port (6).
2. the shield machine according to claim 1 for being adapted to existing tunnel excavation, it is characterised in that: the tractor
(1) hinged by connecting pin (3) and steel bushing (7).
3. the shield machine according to claim 1 for being adapted to existing tunnel excavation, it is characterised in that: the host system
Including shield body, dig cutterhead (8), main driving (9), propelling cylinder (10), duct piece installation machine (12), screw conveyor (13) and every
Plate (14), partition (14) are mounted on the front end of shield body, and partition (14) is equipped with main driving (9), main driving (9) driving shield body front
Dig cutterhead (8), propelling cylinder (10) is mounted on the top of shield body, and duct piece installation machine (12) is mounted on the middle part of shield body, spiral shell
Rotation conveyer (13) is mounted on the lower section of shield body.
4. the shield machine according to claim 3 for being adapted to existing tunnel excavation, it is characterised in that: described digs cutterhead
It (8) is arc cutterhead.
5. the shield machine according to claim 3 for being adapted to existing tunnel excavation, it is characterised in that: the tail of the shield body
Portion is equipped with shield tail brush.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821023423.5U CN208502773U (en) | 2018-06-29 | 2018-06-29 | A kind of shield machine being adapted to existing tunnel excavation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821023423.5U CN208502773U (en) | 2018-06-29 | 2018-06-29 | A kind of shield machine being adapted to existing tunnel excavation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208502773U true CN208502773U (en) | 2019-02-15 |
Family
ID=65281810
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821023423.5U Active CN208502773U (en) | 2018-06-29 | 2018-06-29 | A kind of shield machine being adapted to existing tunnel excavation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208502773U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115853529A (en) * | 2022-11-22 | 2023-03-28 | 中南大学 | Tunnel boring machine and reverse tunnel diameter expanding method |
-
2018
- 2018-06-29 CN CN201821023423.5U patent/CN208502773U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115853529A (en) * | 2022-11-22 | 2023-03-28 | 中南大学 | Tunnel boring machine and reverse tunnel diameter expanding method |
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