CN114109418A - Rectangular Pipe Jacking Machine - Google Patents
Rectangular Pipe Jacking Machine Download PDFInfo
- Publication number
- CN114109418A CN114109418A CN202111389254.3A CN202111389254A CN114109418A CN 114109418 A CN114109418 A CN 114109418A CN 202111389254 A CN202111389254 A CN 202111389254A CN 114109418 A CN114109418 A CN 114109418A
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- Prior art keywords
- cutter
- cutter head
- spoke
- rectangular
- heads
- 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.)
- Pending
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- 239000002689 soil Substances 0.000 claims abstract description 35
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 11
- 239000010959 steel Substances 0.000 claims abstract description 11
- 230000005641 tunneling Effects 0.000 claims description 20
- 239000002002 slurry Substances 0.000 claims description 7
- 239000007921 spray Substances 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims 2
- 238000003756 stirring Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 6
- 239000003814 drug Substances 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 239000011435 rock Substances 0.000 description 4
- 239000004575 stone Substances 0.000 description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000007569 slipcasting Methods 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920006389 polyphenyl polymer Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 230000009974 thixotropic effect Effects 0.000 description 1
- 238000009966 trimming Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910001868 water Inorganic materials 0.000 description 1
Images
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
-
- 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
- E21D9/001—Improving soil or rock, e.g. by freezing; Injections
- E21D9/002—Injection methods characterised by the chemical composition used
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Soil Sciences (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
本申请提供了一种矩形顶管机，包括土体切削系统，包括多个刀盘，各刀盘的正投影面积存在部分重合，各刀盘在掘进方向上交错设置，避免相互干涉；刀盘为多辐条式刀盘，各辐条交汇处为刀盘的中心，中心设有中心刀，中心刀为锥形刀板，锥形刀板的锥角朝向掘进方向；辐条的宽度方向的中部设有贝壳刀，辐条的宽度方向的两侧均设有刮刀；刀盘还包括多根钢管梁，钢管梁固定连接相邻两根辐条的远端。本申请的矩形顶管机的方案，刀盘在正投影方向上部分重合的形式，配合中心刀、贝壳刀以及钢管梁，能够提升刀盘的切削效率，提升矩形顶管机的顶进效率。
The application provides a rectangular pipe jacking machine, including a soil cutting system, including a plurality of cutter heads, the orthographic projection areas of the cutter heads are partially overlapped, and the cutter heads are arranged staggered in the driving direction to avoid mutual interference; It is a multi-spoke cutter head. The intersection of each spoke is the center of the cutter head, and the center is provided with a central knife. The central knife is a conical cutter plate. In the shell knife, scrapers are provided on both sides in the width direction of the spokes; the cutter head further includes a plurality of steel pipe beams, and the steel pipe beams are fixedly connected to the distal ends of two adjacent spokes. In the scheme of the rectangular pipe jacking machine of the present application, the cutter head is partially overlapped in the orthographic projection direction, and with the center knife, the shell cutter and the steel pipe beam, the cutting efficiency of the cutter head can be improved, and the jacking efficiency of the rectangular pipe jacking machine can be improved.
Description
Technical Field
The application relates to the technical field of tunneling equipment of tunnels, in particular to a rectangular pipe jacking machine.
Background
With the acceleration of the urbanization process, the urban population is increasing day by day, urban roads are crowded day by day, and underground rail transit, underground comprehensive pipe gallery and underpass tunnel are rapidly applied to solve the problems. In the construction process of underground engineering, the construction difficulty of the underground engineering is higher due to the complexity of the underground space and the purpose of avoiding the influence on surrounding environment facilities as much as possible. The pipe jacking method and the shield method in the trenchless technology are common underground engineering construction methods in the prior art.
The pipe push bench is divided into a round pipe push bench and a rectangular pipe push bench, the round pipe push bench has larger difference between the cross section and the cross section of an actual target tunnel, the workload of the trimming work after the round pipe push bench is constructed is larger, so that the underground engineering construction efficiency using the round pipe push bench is lower, and the rectangular pipe push bench avoids the problem better.
In a general push bench, a power system is usually set to be an integral starting mode, when a soil body at a certain position is difficult to cut in the pushing process of the push bench, the soil body cannot be cut independently, and the integral power system needs to be started, so that a large amount of energy is consumed. Meanwhile, in the cutting and unearthing processes of the push bench, the unearthing difficulty is increased due to the viscosity and the solidity of the soil body. Therefore, there is a need to provide an improved solution to the above-mentioned deficiencies of the prior art.
Disclosure of Invention
The application aims to provide a rectangular push bench to solve or alleviate the problems in the prior art.
In order to achieve the above purpose, the present application provides the following technical solutions: a rectangular pipe jacking machine comprises
The soil body cutting system comprises a plurality of cutter heads, wherein the orthographic projection area of each cutter head is partially overlapped, and the cutter heads are arranged in a staggered mode in the tunneling direction;
the cutter head is a multi-spoke cutter head, the intersection of each spoke is the center of the cutter head, the center is provided with a center cutter, the center cutter is a conical cutter plate, and the conical angle of the conical cutter plate faces the tunneling direction;
the middle part of the spoke in the width direction is provided with a shell knife, and both sides of the spoke in the width direction are provided with scrapers;
the cutter head further comprises a plurality of steel pipe beams, and the steel pipe beams are fixedly connected with the far ends of the two adjacent spokes.
Furthermore, each cutter head is vertically divided into an upper row and a lower row, the cutter head positioned on the upper row is an upper cutter head, the cutter head positioned on the lower row is a lower cutter head, and the radial size of the upper cutter head is smaller than that of the lower cutter head.
Furthermore, two of the upper cutter discs, which are positioned at the two ends, and one of the lower cutter discs, which is positioned at the middle, form a front cutter disc group together, the rest of the upper cutter discs and the lower cutter discs form a rear cutter disc group, and the front cutter disc group is positioned in front of the rear cutter disc group in the tunneling direction.
Further, in the tunneling direction, the distance between the front cutter disc group and the rear cutter disc group is 10mm-20 mm.
Furthermore, the upper cutter head is a four-spoke cutter head, and the lower cutter head is a six-spoke cutter head.
Further, the axis of rotation of the cutter head passes through the apex of the cone angle of the conical cutter plate.
Compared with the closest prior art, the technical scheme of the embodiment of the application has the following beneficial effects:
1) according to the scheme of the rectangular push bench, the cutter head is partially overlapped in the orthographic projection direction, and the cutting efficiency of the cutter head and the jacking efficiency of the rectangular push bench can be improved by matching the central cutter, the shell cutters and the steel pipe beam.
2) The number of the upper cutterheads is larger than that of the lower cutterheads, and the radial size of the upper cutterheads is smaller than that of the lower cutterheads, so that the projected area of the upper cutterheads can well fill the gap between two adjacent upper cutterheads in the lower cutterheads, and the cutting rate is improved.
3) The distance between the front cutter disc set and the rear cutter disc set is 10mm-20mm, so that not only is the mutual interference between the cutter discs avoided, but also larger stones are prevented from passing through gaps between the cutter discs.
4) Because the cutting area of the lower cutter head is larger, the lower cutter head adopts a six-spoke cutter head to further improve the structural strength and the cutting capability of the lower cutter head, and the pushing speed of the rectangular push bench is favorably ensured.
5) The rotation axis of the cutter head passes through the vertex of the cone angle of the conical cutter plate, so that the conical cutter plate can be well prevented from being bent when hard stones are met.
6) Each cutter head is respectively provided with an independent cutter head power system, the defect that the control is difficult because a plurality of cutter heads are started simultaneously in the prior art is overcome, the rock can be damaged in a targeted manner when regional hard rock is encountered, and the energy consumption of the rectangular pipe jacking machine is reduced.
7) The forming relieved tooth can realize the super digging, avoids the frictional force between cylindric casing and the soil body too big, influences the propulsion of push bench, in addition, the direction adjustment space that can form rectangle push bench is dug in the super.
8) The tunneling auxiliary system can improve the soil body, reduce the cutting resistance, facilitate the cutting of the soil body by the cutter head and improve the cutting rate.
9) The medicament applying device is beneficial to discharging soil, and the influence on the propulsion of the rectangular push bench due to the fault of a soil conveying system is better avoided.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application. Wherein:
FIG. 1 is a front view of a particular embodiment of a rectangular push bench of the present application;
fig. 2 is a left side view of fig. 1.
Description of reference numerals: 1. the device comprises a cylindrical shell, 2, an upper cutter head, 3, a lower cutter head, 4, a steel pipe beam, 5, a central cutter, 6, a shell cutter, 7, a scraper, 8, a grouting hole, 9, a soil body conveying system, 10, an active stirring rod, 11 and a small stirring paddle.
Detailed Description
The present application will be described in detail below with reference to the embodiments with reference to the attached drawings. The various examples are provided by way of explanation of the application and are not limiting of the application. In fact, it will be apparent to those skilled in the art that modifications and variations can be made in the present application without departing from the scope or spirit of the application. For instance, features illustrated or described as part of one embodiment, can be used with another embodiment to yield a still further embodiment. It is therefore intended that the present application cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.
In the description of the present application, the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description of the present application but do not require that the present application must be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. The terms "connected," "connected," and "disposed" as used herein are intended to be broadly construed, and may include, for example, fixed and removable connections; can be directly connected or indirectly connected through intermediate components; the connection may be a wired electrical connection, a wireless electrical connection, or a wireless communication signal connection, and a person skilled in the art can understand the specific meaning of the above terms according to specific situations.
The present application provides a specific embodiment of a rectangular push bench, as shown in fig. 1 and 2, the rectangular push bench includes a soil cutting system, a cutter head power system, a cylindrical shell 1, a tunneling auxiliary system and a soil conveying system 9.
Soil body cutting system includes a plurality of blade discs, and the orthographic projection face of each blade disc is accumulated up and is being partially coincided, and each blade disc is in the crisscross setting of tunnelling direction, avoids mutual interference: each cutter head is vertically divided into an upper row and a lower row, the cutter head positioned on the upper row is an upper cutter head 2, the cutter head positioned on the lower row is a lower cutter head 3, and the radial size of the upper cutter head 2 is smaller than that of the lower cutter head 3; in this embodiment, the number of the upper cutter discs 2 is four, the number of the lower cutter discs 3 is three, and the coincidence degree between the projection areas of two of the upper cutter discs 2 located in the middle and the gaps between adjacent cutter discs of the three lower cutter discs 3 is high, so that the ratio between the cutting area of the cutter discs and the area of the front end face of the rectangular push bench is large. In other embodiments. The number of the upper cutter discs and the number of the lower cutter discs can be adjusted according to actual working conditions. Two of the upper cutterheads 2 positioned at two ends and one of the lower cutterheads 3 positioned in the middle form a front cutterhead group together, the rest of the upper cutterheads 2 and the lower cutterheads 3 form a rear cutterhead group, and the front cutterhead group is positioned in front of the rear cutterhead group in the tunneling direction. In the tunneling direction, the distance between the front cutter disc group and the rear cutter disc group is 10mm-20mm, specifically 10mm, 13mm, 15mm, 17mm, 20 mm. Not only avoids the mutual interference between the cutter heads, but also avoids the large stone from passing through the gap between the cutter heads. And each cutter head is respectively provided with an independent cutter head power system, so that each cutter head can realize bidirectional stepless regulation, and when cutting is blocked, the rotating speed and the steering of the corresponding cutter head are regulated to respectively control the rotation of each cutter head. Each cutter head is respectively provided with an independent cutter head power system, the defect that the control is difficult because a plurality of cutter heads are started simultaneously in the prior art is overcome, the rock can be damaged in a targeted manner when regional hard rock is encountered, and the energy consumption of the rectangular pipe jacking machine is reduced.
The cutter head is a multi-spoke cutter head, the upper cutter head 2 is a four-spoke cutter head, and the lower cutter head 3 is a six-spoke cutter head. Because the cutting area of the lower cutter head is larger, the lower cutter head adopts a six-spoke cutter head to further improve the structural strength and the cutting capability of the lower cutter head, and the pushing speed of the rectangular push bench is favorably ensured. The intersection of each spoke is the center of the cutter head, the center is provided with a center cutter 5, the center cutter 5 is a conical cutter plate, and the conical angle of the conical cutter plate faces the tunneling direction; the axis of rotation of the cutter head passes through the apex of the cone angle of the conical cutter plate. The conical cutter plate can be better prevented from being bent when hard stones are met. The middle part of the width direction of the spoke is provided with a shell knife 6, and both sides of the width direction of the spoke are provided with scrapers 7. The cutter head also comprises a plurality of steel pipe beams 4, and the steel pipe beams 4 are fixedly connected with the far ends of two adjacent spokes. The contact surface of the cutter head and the soil body to be cut is generally called a cutting surface, and the cutting surfaces are all provided with wear-resistant layers.
The back of the cutter head is provided with an active stirring rod 10, the active stirring rod 10 rotates along with the rotation of the cutter head, and the active stirring rod 10 is matched with a passive stirring rod arranged in the mud bin to jointly stir the muck in the soil bin of the rectangular pipe jacking machine. A small stirring paddle 11 is arranged at the bottom of the rectangular pipe jacking machine behind the active stirring rod to crush and stir the residue soil falling to the bottom, so that the soil body can conveniently enter a soil body conveying system.
Be equipped with slip casting hole 8 on each spoke, the supplementary system of tunnelling sprays the supplementary thick liquid of tunnelling to the face through slip casting hole 8 to the soil body of cutting is treated in the improvement, and is specific: the tunneling auxiliary system comprises a slurry container, a pump, a main grouting pipe and branch grouting pipes, wherein the number of the branch grouting pipes is matched with the grouting holes 8 and is respectively fixedly connected with the grouting holes 8, the other ends of the branch grouting pipes are communicated with the main grouting pipe through a rotating shaft type joint after being gathered, the axis of the main grouting pipe is superposed with the axis of a corresponding cutter head, the main grouting pipe is provided with the pump and is communicated with the slurry container, slurry in the slurry container is conveyed to the grouting holes to be discharged from a working face when the pump works, the form of the pump can be selected according to actual requirements, and in the embodiment, a rubber pipe pump is selected. The tunneling auxiliary slurry is prepared from tap water, clay decomposition liquid and polyphenyl diluted amide. The tunneling auxiliary system can improve the soil body, reduce the cutting resistance, facilitate the cutting of the soil body by the cutter head and improve the cutting rate.
At least one circle of relieving teeth are uniformly distributed on the outer peripheral surface of the cylindrical shell, super digging can be achieved, the phenomenon that the pushing of the push bench is affected due to the fact that the friction force between the cylindrical shell and a soil body is too large is avoided, and in addition, a direction adjusting space of the rectangular push bench can be formed through the super digging.
The rectangular push bench comprises a soil body conveying system, wherein the soil body conveying system is provided with a medicament applying device, the medicament applying device is used for applying a medicament to the soil body conveying system, the medicament contains bentonite, water, sodium carbonate Na2C03 and CMC (powder chemical pulp paste) components, so that the soil body forms thixotropic slurry to facilitate the discharge of the soil body, and the tunneling auxiliary system can improve the soil body, reduce the cutting resistance, facilitate the cutting of the soil body by a cutter head and improve the cutting rate.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. The rectangular push bench is characterized by comprising
The soil body cutting system comprises a plurality of cutter heads, wherein the orthographic projection area of each cutter head is partially overlapped, and the cutter heads are arranged in a staggered mode in the tunneling direction;
the cutter head is a multi-spoke cutter head, the intersection of each spoke is the center of the cutter head, the center is provided with a center cutter, the center cutter is a conical cutter plate, and the conical angle of the conical cutter plate faces the tunneling direction;
the middle part of the spoke in the width direction is provided with a shell knife, and both sides of the spoke in the width direction are provided with scrapers;
the cutter head further comprises a plurality of steel pipe beams, and the steel pipe beams are fixedly connected with the far ends of the two adjacent spokes.
2. The rectangular push bench of claim 1, wherein each of said cutter heads is vertically divided into an upper row and a lower row, said cutter heads in the upper row being upper cutter heads, said cutter heads in the lower row being lower cutter heads, said upper cutter heads having a radial dimension less than a radial dimension of said lower cutter heads.
3. The rectangular pipe jacking machine according to claim 2, wherein two of said upper cutter discs located at two ends, together with one of said lower cutter discs located at the middle, constitute a front cutter disc group, and the remaining upper cutter discs and said lower cutter discs constitute a rear cutter disc group, said front cutter disc group being located in front of said rear cutter disc group in the heading direction.
4. The rectangular pipe jacking machine according to claim 3, wherein the spacing between the front cutter disc group and the rear cutter disc group in the tunneling direction is 10mm-20 mm.
5. The rectangular push bench of claim 3, wherein said upper cutter is a four spoke cutter and said lower cutter is a six spoke cutter.
6. The rectangular push bench of claim 1, wherein the axis of rotation of said cutter deck passes through the apex of the cone angle of said conical cutter plate.
7. The rectangular push bench of claim 1 wherein each of said cutterheads is provided with an independent cutterhead power system for controlling the rotation of each of said cutterheads, respectively.
8. The rectangular push bench of claim 1, comprising a cylindrical shell, wherein at least one circle of relieving teeth are uniformly distributed on the outer circumferential surface of the cylindrical shell.
9. The rectangular pipe jacking machine according to claim 1, wherein said rectangular pipe jacking machine comprises a tunneling auxiliary system, each of said spokes is provided with a grouting hole, said tunneling auxiliary system sprays a tunneling auxiliary slurry to a tunnel face through said grouting holes to improve a soil body to be cut.
10. The rectangular push bench of claim 3 comprising a soil transport system incorporating an agent application device for applying an agent to the soil transport system to facilitate drainage of soil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111389254.3A CN114109418A (en) | 2021-11-22 | 2021-11-22 | Rectangular Pipe Jacking Machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111389254.3A CN114109418A (en) | 2021-11-22 | 2021-11-22 | Rectangular Pipe Jacking Machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114109418A true CN114109418A (en) | 2022-03-01 |
Family
ID=80439638
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111389254.3A Pending CN114109418A (en) | 2021-11-22 | 2021-11-22 | Rectangular Pipe Jacking Machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114109418A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09170399A (en) * | 1995-12-21 | 1997-06-30 | Kawasaki Heavy Ind Ltd | Rectangular shield machine |
| JPH09273381A (en) * | 1996-04-09 | 1997-10-21 | Mitsubishi Heavy Ind Ltd | Tunnel excavator and excavation method |
| CN201351497Y (en) * | 2009-02-10 | 2009-11-25 | 扬州广鑫机械有限公司 | Multi-cutter rectangle push bench |
| CN202926334U (en) * | 2012-11-22 | 2013-05-08 | 中铁隧道装备制造有限公司 | Pipe jacking machine |
| CN104088647A (en) * | 2014-06-06 | 2014-10-08 | 中铁工程装备集团有限公司 | Shield tube push bench with super-large rectangular cross section |
| CN106979014A (en) * | 2017-05-08 | 2017-07-25 | 中铁工程装备集团有限公司 | Earth pressure balance rectangle heals up Suporting structure and construction |
| CN107587880A (en) * | 2017-10-17 | 2018-01-16 | 上海城建市政工程（集团）有限公司 | A kind of large section earth pressure balance box culvert development machine |
| CN111997645A (en) * | 2020-09-10 | 2020-11-27 | 中铁工程装备集团有限公司 | Multi-cutter-head tunneling machine |
| CN213297979U (en) * | 2020-10-27 | 2021-05-28 | 中铁工程装备集团有限公司 | Excavation system of heading machine |
-
2021
- 2021-11-22 CN CN202111389254.3A patent/CN114109418A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09170399A (en) * | 1995-12-21 | 1997-06-30 | Kawasaki Heavy Ind Ltd | Rectangular shield machine |
| JPH09273381A (en) * | 1996-04-09 | 1997-10-21 | Mitsubishi Heavy Ind Ltd | Tunnel excavator and excavation method |
| CN201351497Y (en) * | 2009-02-10 | 2009-11-25 | 扬州广鑫机械有限公司 | Multi-cutter rectangle push bench |
| CN202926334U (en) * | 2012-11-22 | 2013-05-08 | 中铁隧道装备制造有限公司 | Pipe jacking machine |
| CN104088647A (en) * | 2014-06-06 | 2014-10-08 | 中铁工程装备集团有限公司 | Shield tube push bench with super-large rectangular cross section |
| CN106979014A (en) * | 2017-05-08 | 2017-07-25 | 中铁工程装备集团有限公司 | Earth pressure balance rectangle heals up Suporting structure and construction |
| CN107587880A (en) * | 2017-10-17 | 2018-01-16 | 上海城建市政工程（集团）有限公司 | A kind of large section earth pressure balance box culvert development machine |
| CN111997645A (en) * | 2020-09-10 | 2020-11-27 | 中铁工程装备集团有限公司 | Multi-cutter-head tunneling machine |
| CN213297979U (en) * | 2020-10-27 | 2021-05-28 | 中铁工程装备集团有限公司 | Excavation system of heading machine |
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