CN107288647A - A kind of shield machine knife-changing system - Google Patents
A kind of shield machine knife-changing system Download PDFInfo
- Publication number
- CN107288647A CN107288647A CN201710677471.XA CN201710677471A CN107288647A CN 107288647 A CN107288647 A CN 107288647A CN 201710677471 A CN201710677471 A CN 201710677471A CN 107288647 A CN107288647 A CN 107288647A
- Authority
- CN
- China
- Prior art keywords
- cutter
- girff
- knife
- shield machine
- changing system
- 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.)
- Granted
Links
- 238000007789 sealing Methods 0.000 claims description 19
- 239000000523 sample Substances 0.000 claims description 8
- 230000001737 promoting effect Effects 0.000 claims description 3
- 239000002689 soil Substances 0.000 abstract description 9
- 239000011435 rock Substances 0.000 abstract description 7
- 239000012535 impurity Substances 0.000 abstract description 6
- 238000011010 flushing procedure Methods 0.000 abstract description 5
- 238000010276 construction Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000009434 installation Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
Classifications
-
- 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
- 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
Landscapes
- Engineering & Computer Science (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 provides a kind of shield machine knife-changing system, belong to shield machine technical field.The present invention including cutter, be connected to and be used for the girff and tool changing device for dismantling and installing the cutter that support the cutter on cutterhead, the cutter includes cutter head and knife pressure pin, the knife pressure pin afterbody is provided with the knife tail for being used for connecting the tool changing device, and the girff, which is provided with, to be used to close the seal gate valve of the girff, the rinse mouth for rinsing the cutter head and the cutter fastening structure for fastening the cutter.The flushing that the present invention passes through rinse mouth, cutter head and girff can be cleaned, prevent the interference of the impurity such as soil rock ballast, seal gate valve is fully sealed, the environment completely cut off inside and outside shield machine, tool changing operation is carried out in the case where geological conditions is complex, be easy to being smoothed out for tool changing operation, it is safe and convenient to use.
Description
Technical field
It is to be related to a kind of shield machine knife-changing system more specifically the invention belongs to shield machine technical field.
Background technology
At present, tunnel construction carried out with shield machine have that automaticity is high, it is fast to save manpower, speed of application, once into
Hole, weatherproof, controllable surface subsidence when excavating, not shadow when reducing the influence to above ground structure and excavating under water
The features such as ringing traffic above-ground, tunnel line is longer, buried depth it is larger in the case of, with shield machine construction more economical rationality.Shield
The basic functional principle of structure machine is exactly that the steel component of a cylinder is excavated along canal axes when pushing ahead to soil.
The housing of the cylinder component is shield, and it plays a part of temporary support to the also unlined Tunnel Section excavated, and bears
The pressure of surrounding soil layer, sometimes also subject to ground water pressure and by underground water gear outside.The operations such as excavation, casting, lining cutting exist
Carried out under the shielding of shield.
During the use of shield machine, due to complex geological condition, long range shield-tunneling construction, and it is improper situations such as use
Choosing, often because the tool wear on cutterhead is serious or different geological conditions the need for carry out tool changing operation, it is but existing
Knife-changing system needs to carry out under conditions of shield machine external and internal pressure is more or less the same.This frequency to tool changing and required address
Condition proposes very high requirement, if constructed in adverse conditions sometimes, it is impossible to timely tool changing, frequently can lead to driving speed
Degree declines, cutter head torque increase, accelerates to the problems such as card is worn and torn, has a strong impact on efficiency of construction and cutterhead and whole shield machine knot
The stability of structure.
The content of the invention
It is an object of the invention to provide a kind of shield machine knife-changing system, changed with solving shield machine present in prior art
Knife system is inconvenient for use, by the big technical problem of ectocine.
To achieve the above object, the technical solution adopted by the present invention is：A kind of shield machine knife-changing system, including knife are provided
Tool, the cutterhead being connected with cutter, it is connected on cutterhead for supporting the girff of the cutter and for dismounting changing for the cutter
Knife system, the cutter includes cutter head and knife pressure pin, and the knife pressure pin afterbody is provided with the knife tail for being used for connecting the tool changing device,
The girff, which is provided with, to be used to close the seal gate valve of the girff, the rinse mouth for rinsing the cutter head and for fastening
State the cutter fastening structure of cutter.
Further, in a kind of foregoing shield machine knife-changing system, the seal gate valve includes being used to seal the girff
Lock body, the lock body is provided with flexible sealing block close to the side of the cutterhead, and described flexible sealing block one end protrudes from described
The end of lock body.
Further, in a kind of foregoing shield machine knife-changing system, two institutes are arranged with above and below the girff
State seal gate valve.
Further, in a kind of foregoing shield machine knife-changing system, the seal gate valve includes being used to seal the girff
Lock body and cylinder for promoting lock body motion, be provided with and lock body direction of motion identical elasticity in the cylinder
Part.
Further, in a kind of foregoing shield machine knife-changing system, the rinse mouth is located at the seal gate valve and described
Between cutter fastening structure.
Further, in a kind of foregoing shield machine knife-changing system, ultrasonic probe, the knife tail are provided with inside the knife pressure pin
Provided with the detector arrangement for receiving the ultrasonic wave that the ultrasonic probe is sent.
Further, in a kind of foregoing shield machine knife-changing system, it is provided with the girff lateral surface around the cutter
Antifriction bulge loop.
Further, in a kind of foregoing shield machine knife-changing system, the junction of the girff and the cutterhead is provided with close
The junction of seal, the girff and the cutterhead is oblique band ladder-shaper structure.
A kind of beneficial effect for shield machine knife-changing system that the present invention is provided is：Compared with prior art, the present invention is logical
The flushing of rinse mouth is crossed, cutter head and girff can be cleaned, be prevented the interference of the impurity such as soil rock ballast, make seal gate valve complete
Hermetically sealed, the environment inside and outside isolation shield machine allows tool changing operation to be carried out in the case where geological conditions is complex, is easy to
Being smoothed out for tool changing operation, it is safe and convenient to use.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, below will be to embodiment or description of the prior art
In required for the accompanying drawing that uses be briefly described, it should be apparent that, drawings in the following description are only some of the present invention
Embodiment, for those of ordinary skill in the art, without having to pay creative labor, can also be according to these
Accompanying drawing obtains other accompanying drawings.
Fig. 1 is a kind of structural representation of shield machine knife-changing system provided in an embodiment of the present invention.
Wherein, each reference in figure：
1 cutterhead；2 cutters；21 cutter heads；22 knife pressure pins；23 knife tails；24 ultrasonic probes；25 detector arrangements；3 girffs；31 is antifriction
Bulge loop；32 sealing rings；5 seal gate valves；51 lock bodies；52 flexible sealing blocks；53 elastic components；6 rinse mouths；7 cutter fastening structures.
Embodiment
In order that technical problems, technical solutions and advantages to be solved are more clearly understood, tie below
Drawings and Examples are closed, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only used
To explain the present invention, it is not intended to limit the present invention.
It should be noted that when element is referred to as " being fixed on " or " being arranged at " another element, it can be directly another
On one element or it is connected on another element.When an element is known as " being connected to " another element, it can
To be directly to another element or be indirectly connected on another element.
It is to be appreciated that term " length ", " width ", " on ", " under ", "front", "rear", "left", "right", " vertical ",
The orientation or position relationship of the instruction such as " level ", " top ", " bottom " " interior ", " outer " are to be closed based on orientation shown in the drawings or position
System, is for only for ease of the description present invention and simplifies description, rather than indicate or imply that the device or element of meaning must have
Specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or implying relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or
Implicitly include one or more this feature.In the description of the invention, " multiple " are meant that two or more,
Unless otherwise specifically defined.
Referring to Fig. 1, existing illustrate to a kind of shield machine knife-changing system that the present invention is provided.The shield machine tool changing system
System, including cutter 2, be connected with cutter cutterhead 1, be connected on cutterhead 1 for supporting the girff 3 of the cutter 2 and for tearing open
The tool changing device of the cutter 2 is unloaded and installs, the cutter 2 includes cutter head 21 and knife pressure pin 22, and the afterbody of knife pressure pin 22 is set
There is the knife tail 23 for connecting the tool changing device, the girff 3 is provided with seal gate valve 5, the use for being used to close the girff 3
In the rinse mouth 6 for rinsing the cutter head 21 and cutter fastening structure 7 for fastening the cutter 2.
When carrying out tool changing, cutter fastening structure 7 is opened, is pulled back cutter 2 using tool changing device, when the cutter head of cutter 2
During 21 process rinse mouth 6, rinse mouth 6 injects cleaning fluid into girff 3, and the soil rock ballast on cutter head 21 and in girff 3 etc. is miscellaneous
Matter is rinsed well, and now cutter head 21 plays a part of closing girff 3, then close seal gate valve 5 in girff 3, and will punching
Wash mouth 6 to close, then take out cutter 2 from girff 3；Change after cutter 2, new cutter 2 is reentered into girff 3, by tool changing
Device pushes to seal gate valve 5, opens seal gate valve 5, then new cutter 2 is pushed into suitable position, closes cutter fastening
Structure 7 completes tool changing operation.
The shield machine knife-changing system that the present invention is provided, compared with prior art, can be to knife by the flushing of rinse mouth 6
First 21 and girff 3 cleaned, prevent the interference of the impurity such as soil rock ballast, seal gate valve 5 be fully sealed, isolation shield machine in
Outer environment, allows tool changing operation to be carried out in the case where geological conditions is complex, is easy to being smoothed out for tool changing operation,
It is safe and convenient to use.
Further, referring to Fig. 1, a kind of embodiment of shield machine knife-changing system provided as the present invention,
The seal gate valve 5 includes the lock body 51 for being used to seal the girff 3, and the lock body 51 is provided with close to the side of the cutterhead 1
Flexible sealing block 52, described one end of flexible sealing block 52 protrudes from the end of the lock body 51.In use, cutter head 21 is by sealing
During gate valve 5, seal gate valve 5 can be closed in advance, flexible sealing block 52 is contacted, and the rigid structure of lock body 51 is left seam
Gap, the impurity such as soil rock ballast can be discharged by flexible sealing block 52 after now rinse mouth 6 is opened, while removing lock body 51
The impurity such as soil rock ballast on rigid structure, flushing terminate after, the rigid structure of lock body 51 is contacted rapidly, by inside and outside shield machine every
Absolutely, even if now the rigid structure of lock body 51 is not completely enclosed, the work of the strong squeezing action of flexible sealing block 52 and external pressure
Under, also place's closing will can not be completely enclosed.This simple and effective enclosed construction can bear huge ambient pressure, effectively anti-
Only muddy water penetrates into, and influences the installation of new cutter 2.
Further, referring to Fig. 1, a kind of embodiment of shield machine knife-changing system provided as the present invention,
Two seal gate valves 5 are arranged with above and below the girff 3.Two are symmetrical arranged seal gate valve 5 and can accelerate closing
Speed, while increase endurance.
Further, referring to Fig. 1, a kind of embodiment of shield machine knife-changing system provided as the present invention,
The seal gate valve 5 includes the lock body 51 for sealing the girff 3 and the cylinder 52 for promoting the lock body 51 to move, institute
State in cylinder 52 and be provided with and the direction of motion identical elastic component 53 of lock body 51.Elastic component 53 is preferably constantly in pressure when using
Contracting state, elastic component 53 can speed up the motion of lock body 51, while lock body 51 can be made to be constantly in the state of squeezing knife tool 2, when
When taking out cutter 2, as long as cutter 2 is by seal gate valve 5, seal gate valve 5 will be closed, i.e., in contacting flexible sealing block 52
And the rigid structure of lock body 51 stays apertured state, seal gate valve 5 is in tight closure shape in the presence of cylinder afterwards
State.Shaken in addition, this structure can also play a part of certain cutter 2 that mitigates.
Further, referring to Fig. 1, a kind of embodiment of shield machine knife-changing system provided as the present invention,
The rinse mouth 6 is located between the seal gate valve 5 and the cutter fastening structure 7.When rinse mouth 6 is opened, cutter head 21 is in
Between rinse mouth 6 and cutter fastening structure 7, flushing liquor outwards flows, it is to avoid pollution cutter fastening structure 7, prevents cutter from fastening
Structure 7 fails.
Further, referring to Fig. 1, a kind of embodiment of the shield machine knife-changing system provided as the present invention, described
The inside of knife pressure pin 22 is provided with ultrasonic probe 24, and the knife tail 23, which is provided with, to be used to receive the ultrasound that the ultrasonic probe 24 is sent
The detector arrangement 25 of ripple.Detector arrangement 25 is connected with analytical instrument, the transmitting ultrasonic wave of ultrasonic probe 24, and ultrasonic wave is in cutter 2
In conducted by cutter head 21 to knife tail 23, and tested wave apparatus 25 is received, and analytical instrument passes through analysis not detector arrangement 25 in the same time
The ultrasonic wave received judges the abrasion condition of cutter head 21 and knife pressure pin 22.
Further, referring to Fig. 1, a kind of embodiment of shield machine knife-changing system provided as the present invention,
On the lateral surface of girff 3 antifriction bulge loop 31 is provided with around the cutter 2.Antifriction bulge loop 31 can slow down cutter 2 and knife
The friction of the lateral surface contact position of case 3 and stress concentration phenomenon, while also the impurity such as soil rock ballast can be prevented to be stuck in cutter 2 and girff
The taking-up of cutter 2 is hindered between 3.
Further, referring to Fig. 1, a kind of embodiment of shield machine knife-changing system provided as the present invention,
The junction of the girff 3 and the cutterhead 1 is provided with sealing ring 32, and the junction of the girff 3 and the cutterhead 1 is sloping step
Shape structure.I.e. on the section of the vertical cutterhead 1, the junction of the girff 3 and the cutterhead 1 is in oblique band scalariform.Work as knife
After tool 2 takes out, girff 3 might have small footpath contracting, and in the case that ambient pressure is larger, water can be via girff 3 and cutterhead 1
Junction is penetrated into, and girff 3 or cutterhead 1 are corroded, and girff 3 is loosened with cutterhead 1, is ultimately resulted in girff 3 and loosen, applied in shield
Man-hour causes danger.Sealing ring 32 can effectively solve the problem that this problem, it is ensured that the seal between girff 3 and cutterhead 1, it is ensured that apply
Work safety.Oblique band scalariform refers to that cascaded surface is the stepped of inclined-plane, and the junction of girff 3 and cutterhead 1 had both been easy in oblique band scalariform
The installation of girff 3 and cutterhead 1, makes girff 3 to be brought into close contact in the presence of pulling force with cutterhead 1, prevents water can be via girff 3 again
Penetrated into the junction of cutterhead 1.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
Any modifications, equivalent substitutions and improvements made within refreshing and principle etc., should be included in the scope of the protection.
Claims (8)
1. a kind of shield machine knife-changing system, it is characterised in that：Including cutter（2）, the cutterhead that is connected with cutter（1）, be connected to knife
Disk（1）It is upper to be used to support the cutter（2）Girff（3）With for dismounting the cutter（2）Tool changing device, the cutter
（2）Including cutter head（21）With knife pressure pin（22）, the knife pressure pin（22）Afterbody is provided with the knife tail for being used for connecting the tool changing device
（23）, the girff（3）Being provided with is used to close the girff（3）Seal gate valve（5）, for rinsing the cutter head（21）'s
Rinse mouth（6）With for fastening the cutter（2）Cutter fastening structure（7）.
2. a kind of shield machine knife-changing system as claimed in claim 1, it is characterised in that：The seal gate valve（5）Including for
Seal the girff（3）Lock body（51）, the lock body（51）Close to the cutterhead（1）Side be provided with flexible sealing block
（52）, the flexible sealing block（52）One end protrudes from the lock body（51）End.
3. a kind of shield machine knife-changing system as claimed in claim 2, it is characterised in that：The girff（3）Above and below it is right
Claim provided with two seal gate valves（5）.
4. a kind of shield machine knife-changing system as claimed in claim 1 or 2, it is characterised in that：The seal gate valve（5）Including with
In the sealing girff（3）Lock body（51）With for promoting the lock body（51）The cylinder of motion（52）, the cylinder（52）
It is interior to be provided with and the lock body（51）Direction of motion identical elastic component（53）.
5. a kind of shield machine knife-changing system as claimed in claim 1, it is characterised in that：The rinse mouth（6）Positioned at described close
Gate sealing valve（5）With the cutter fastening structure（7）Between.
6. a kind of shield machine knife-changing system as claimed in claim 1, it is characterised in that：The knife pressure pin（22）Inside is provided with super
Sonic probe（24）, the knife tail（23）Provided with for receiving the ultrasonic probe（24）The detector arrangement of the ultrasonic wave sent
（25）.
7. a kind of shield machine knife-changing system as claimed in claim 1, it is characterised in that：The girff（3）It is surround on lateral surface
The cutter（2）Provided with antifriction bulge loop（31）.
8. a kind of shield machine knife-changing system as claimed in claim 1, it is characterised in that：The girff（3）With the cutterhead（1）
Junction be provided with sealing ring（32）, the girff（3）With the cutterhead（1）Junction be oblique band ladder-shaper structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710677471.XA CN107288647B (en) | 2017-08-09 | 2017-08-09 | A kind of shield machine knife-changing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710677471.XA CN107288647B (en) | 2017-08-09 | 2017-08-09 | A kind of shield machine knife-changing system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107288647A true CN107288647A (en) | 2017-10-24 |
| CN107288647B CN107288647B (en) | 2019-09-24 |
Family
ID=60105598
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710677471.XA Expired - Fee Related CN107288647B (en) | 2017-08-09 | 2017-08-09 | A kind of shield machine knife-changing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107288647B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108868803A (en) * | 2018-09-29 | 2018-11-23 | 华东交通大学 | A kind of shield machine structure and cutter changing method facilitating cutter changing |
| CN110410085A (en) * | 2019-08-29 | 2019-11-05 | 北京住总集团有限责任公司 | A kind of shield cutter of the shield machine based on geology forward probe |
| CN112593951A (en) * | 2020-12-07 | 2021-04-02 | 安徽唐兴机械装备有限公司 | Device for rapidly replacing cutter head of push bench and working method thereof |
| CN112855189A (en) * | 2021-01-29 | 2021-05-28 | 安徽唐兴机械装备有限公司 | Rotating wheel type automatic tool bit replacing device and pipe jacking machine applying same |
| CN114033401A (en) * | 2021-11-10 | 2022-02-11 | 中铁十八局集团第四工程有限公司 | Underground shield constructs engineering not precipitation ordinary pressure and opens storehouse toolchanger |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001040992A (en) * | 1999-07-28 | 2001-02-13 | Kajima Corp | Cutter bit changer for shield machine |
| US20130045055A1 (en) * | 2009-12-22 | 2013-02-21 | Jean-Noël Derycke | Method for replacing a tunnel boring machine roller cutter, handling device and roller cutter suited to such a method |
| CN205654352U (en) * | 2016-04-19 | 2016-10-19 | 中铁工程装备集团有限公司 | Can dismantle ordinary pressure toolchanger |
| CN106499401A (en) * | 2016-12-19 | 2017-03-15 | 中交隧道工程局有限公司 | A kind of super-large-diameter shield machine normal pressure tool changing device and method |
-
2017
- 2017-08-09 CN CN201710677471.XA patent/CN107288647B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001040992A (en) * | 1999-07-28 | 2001-02-13 | Kajima Corp | Cutter bit changer for shield machine |
| US20130045055A1 (en) * | 2009-12-22 | 2013-02-21 | Jean-Noël Derycke | Method for replacing a tunnel boring machine roller cutter, handling device and roller cutter suited to such a method |
| CN205654352U (en) * | 2016-04-19 | 2016-10-19 | 中铁工程装备集团有限公司 | Can dismantle ordinary pressure toolchanger |
| CN106499401A (en) * | 2016-12-19 | 2017-03-15 | 中交隧道工程局有限公司 | A kind of super-large-diameter shield machine normal pressure tool changing device and method |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108868803A (en) * | 2018-09-29 | 2018-11-23 | 华东交通大学 | A kind of shield machine structure and cutter changing method facilitating cutter changing |
| CN108868803B (en) * | 2018-09-29 | 2023-05-09 | 华东交通大学 | Shield tunneling machine structure convenient for cutter replacement and cutter replacement method |
| CN110410085A (en) * | 2019-08-29 | 2019-11-05 | 北京住总集团有限责任公司 | A kind of shield cutter of the shield machine based on geology forward probe |
| CN112593951A (en) * | 2020-12-07 | 2021-04-02 | 安徽唐兴机械装备有限公司 | Device for rapidly replacing cutter head of push bench and working method thereof |
| CN112593951B (en) * | 2020-12-07 | 2021-11-02 | 安徽唐兴机械装备有限公司 | Device for rapidly replacing cutter head of push bench and working method thereof |
| CN112855189A (en) * | 2021-01-29 | 2021-05-28 | 安徽唐兴机械装备有限公司 | Rotating wheel type automatic tool bit replacing device and pipe jacking machine applying same |
| CN112855189B (en) * | 2021-01-29 | 2023-03-31 | 安徽唐兴装备科技股份有限公司 | Rotating wheel type automatic tool bit replacing device and pipe jacking machine applying same |
| CN114033401A (en) * | 2021-11-10 | 2022-02-11 | 中铁十八局集团第四工程有限公司 | Underground shield constructs engineering not precipitation ordinary pressure and opens storehouse toolchanger |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107288647B (en) | 2019-09-24 |
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| CB03 | Change of inventor or designer information |
Inventor after: Lu Sen Inventor after: Jing Dongxu Inventor after: Zheng Qiang Inventor after: Tong Xinjian Inventor after: Guo Hai Inventor before: Guo Hai Inventor before: Jing Dongxu Inventor before: Tong Xinjian Inventor before: Lu Sen Inventor before: Zheng Qiang |
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