CN109113752B - High-efficiency tunneling heavy shield cutter head - Google Patents
High-efficiency tunneling heavy shield cutter head Download PDFInfo
- Publication number
- CN109113752B CN109113752B CN201811037027.2A CN201811037027A CN109113752B CN 109113752 B CN109113752 B CN 109113752B CN 201811037027 A CN201811037027 A CN 201811037027A CN 109113752 B CN109113752 B CN 109113752B
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- China
- Prior art keywords
- hob
- group
- edge
- hob group
- groups
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- 230000005641 tunneling Effects 0.000 title claims abstract description 19
- 238000009412 basement excavation Methods 0.000 claims abstract description 7
- 230000001681 protective effect Effects 0.000 claims 3
- 238000010276 construction Methods 0.000 abstract description 17
- 238000000034 method Methods 0.000 abstract description 10
- 230000008569 process Effects 0.000 abstract description 9
- 239000011435 rock Substances 0.000 abstract description 9
- 230000002159 abnormal effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000008719 thickening Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 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
- E21D9/087—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 with a rotary drilling-head cutting simultaneously the whole cross-section, i.e. full-face machines
-
- 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
- E21D9/0875—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 with a movable support arm carrying cutting tools for attacking the front face, e.g. a bucket
- E21D9/0879—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 with a movable support arm carrying cutting tools for attacking the front face, e.g. a bucket the shield being provided with devices for lining the tunnel, e.g. shuttering
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 discloses a high-efficiency tunneling heavy shield cutterhead, which solves the problems that the shield cutterhead is easy to damage, the excavation efficiency is low and the like in the prior art. The invention comprises a cutter disc and a main beam, wherein the cutter disc is connected with the main beam through a box beam bracket, the cutter disc is connected with a main drive arranged on the main beam, a radial hob group, an edge hob group and a same track hob group are arranged on the front end face of the cutter disc, the edge hob group and the same track hob group are arranged between the radial hob groups in a crossing way, an edge scraper is arranged at the outer end part of the radial hob group, a thickened large ring and a protection cutter are arranged at the rear part of the cutter disc, the protection cutter is positioned behind the thickened large ring, and protection blocks are arranged on two sides of the edge hob group and two sides of the same track hob group. The special design of the multiple cutters of the invention increases the impact resistance, reduces the abnormal damage probability, reduces the damage probability of the cutters in the construction process of the full-section hard rock stratum, reduces the cutter changing risk and cost, and greatly improves the construction efficiency.
Description
Technical Field
The invention relates to the technical field of shield machines, in particular to a high-efficiency tunneling heavy shield cutterhead.
Background
Along with the acceleration of urban progress and the rapid development of urban construction in China, subway engineering is increasingly increased, and a shield method is used as an advanced construction method and has been widely applied to the construction of subway tunnels. In the large-scale shield construction process, shield construction is increasingly carried out in full-section high-strength hard rock stratum.
The shield is easy to have the following problems in the construction of the full-section high-strength hard rock stratum: firstly, the cutter of the shield cutter head is seriously worn, seriously damaged abnormally and easily damaged and falls off; secondly, hard rock stratum appears in tunneling, so that the torque of a shield cutter head rises, the cutter is worn and damaged fast, shield pushing difficulty, even construction incapability and construction period delay can be caused; thirdly, the full-section hard rock stratum easily causes the increase of the structural strength of the shield cutter head and the consumption of the cutter, and the construction period and the construction cost of the whole project are seriously influenced.
Therefore, a cutterhead capable of avoiding the problems needs to be developed, damage to a cutter and damage to structural strength of the cutterhead in a tunneling process are reduced, and tunneling efficiency is improved.
Disclosure of Invention
Aiming at the defects in the background technology, the invention provides a high-efficiency tunneling heavy shield cutterhead, which solves the problems of easy damage, low excavation efficiency and the like of the shield cutterhead in the prior art.
The technical scheme of the invention is realized as follows: the utility model provides a high-efficient tunneling heavy shield cutter head, including blade disc and girder, the blade disc is connected with the girder through the box girder bracket, the blade disc is connected with the main drive of installing on the girder, be equipped with radial hob group on the blade disc front end face, edge hob group and with track hob group alternately set up between radial hob group, the outer tip of radial hob group is equipped with the limit scraper, the blade disc rear portion is equipped with thickening ring and guard knife, the guard knife is located the rear of thickening ring, the both sides of edge hob group and the both sides with track hob group all are equipped with the protection piece.
The radial hob group comprises a center hob group and a face hob group, the center hob group is arranged at the center of the cutterhead, the face hob group is arranged along the radial direction of the cutterhead, and the face hob group is arranged on the outer circle of the center hob group in a divergent mode at equal angles. The center hob group and the face hob group are arranged on the cutterhead in a similar-meter shape and are used for cutting the main face.
The hob heights H=155-165 mm of the center hob group and the face hob group. The conventional hob is 187.7mm in height, and the adopted hob is H=155-165 mm in height, so that impact damage to hob rings, hubs, seals and bearings in the tunneling process can be reduced.
The cutter head is provided with a center hob group, six face hob groups, three edge hob groups and three same-track hob groups, wherein the edge hob groups and the same-track hob groups are arranged between the face hob groups at intervals, and the radius of the excavation track of the same-track hob groups is not smaller than that of the edge hob groups.
The edge scrapers are symmetrically arranged at the outer end parts of the face hob groups, and the height L=95-105 mm of the edge scrapers. The height of the conventional scraper blade is 140mm, and the blade height L=95-105 mm of the edge scraper blade adopted at present can reduce impact damage to the edge scraper blade ring, the blade hub, the seal and the bearing in the tunneling process.
The rear part of the thickened large ring is provided with thirty-six protection cutters which are arranged on the cutter disc at equal intervals along the circumferential direction and used for protecting the thickened large ring and the cutter disc.
The special design of the multiple cutters of the invention increases the impact resistance, reduces the abnormal damage probability, reduces the damage probability of the cutters in the construction process of the full-section hard rock stratum, reduces the cutter changing risk and cost, and greatly improves the construction efficiency. The cutter head structure of the invention has the advantages of improving the structural strength and the rotating speed of the cutter head, improving the construction efficiency, saving the cost, reducing the construction risk caused by the damage of the cutter head structure and having higher popularization value by adopting the thickened box girder bracket and the main girder to strengthen the strength.
Drawings
In order to more clearly illustrate the embodiments of the present invention, the drawings that are required for the description of the embodiments will be briefly described below, it being apparent that the drawings in the following description are only some embodiments of the present invention and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.
FIG. 1 is a schematic diagram of the overall internal structure of the present invention.
Fig. 2 is a schematic front view of the present invention.
Fig. 3 is a schematic diagram of a face hob group structure.
Fig. 4 is a schematic diagram of the structure of the center hob group.
Fig. 5 is a schematic diagram of an edge doctor blade configuration.
Fig. 6 is a partial enlarged view of fig. 1 at a.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1-6, in embodiment 1, a high-efficiency tunneling heavy shield cutterhead comprises a cutterhead 1 and a main girder 2, wherein the cutterhead 1 is connected with the main girder 2 through a box girder bracket 3, the main girder adopts a thickened steel plate, and the cutterhead adopts a bracket thickened box girder design to eliminate stress concentration positions as much as possible. The cutterhead 1 is connected with a main drive 10 arranged on a main beam 2, the main drive 10 provides power for the rotation of the cutterhead, the cutterhead can realize tunneling efficiency with the rotating speed of more than 3rpm, and the rotating speed of a conventional shield cutterhead is 1-2rpm. The front end face of the cutter head 1 is provided with a radial hob group 4, an edge hob group 5 and a same track hob group 6, the edge hob group 5 and the same track hob group 6 are arranged between the radial hob groups 4 in a crossing mode, the radial hob group 4 is used for cutting a main rock face, and the edge hob group 5 and the same track hob group 6 are used for cutting rocks at the edge of a tunnel. The outer end part of the radial hob group 4 is provided with an edge scraper 11 for cutting the rock at the edge of the tunnel and protecting the radial hob group. The rear part of the cutter head 1 is provided with a thickened large circular ring 7 and a protection cutter 8, the protection cutter 8 is positioned at the rear part of the thickened large circular ring 7, the thickened large circular ring adopts a high-strength wear-resistant composite steel plate design of 12+12mm of whole circle, and the protection cutter is arranged at one side close to the notch ring and used for protecting the thickened large circular ring. The two sides of the edge hob group 5 and the two sides of the same track hob group 6 are respectively provided with a protection block 9 for protecting the hob from impact as much as possible in the construction process.
Further, the radial hob group 4 comprises a center hob group 4-1 and a face hob group 4-2, the center hob group 4-1 is arranged at the center of the cutterhead 1, the face hob group 4-2 is arranged along the radial direction of the cutterhead 1, and the face hob group 4-2 is arranged on the outer circle of the center hob group 4-1 in a divergent mode at equal angles. The center hob group and the face hob group are arranged on the cutterhead in a similar-meter shape and are used for cutting the main face. The hob heights H=155 or 165mm of the center hob group 4-1 and the face hob group 4-2.
In the embodiment 2, the cutter heights H=160 mm of the center cutter set 4-1 and the face cutter set 4-2 are high. Impact damage to a hob ring, a hob hub, a seal and a bearing in the tunneling process can be reduced. The cutter head 1 is provided with a central hob group 4-1, six face hob groups 4-2, three edge hob groups 5 and three same track hob groups 6, the edge hob groups 5 and the same track hob groups 6 are arranged between the face hob groups 4-2 at intervals, the radius of the excavation track of the same track hob groups 6 is not smaller than that of the edge hob groups 5, namely, the excavation radius of the hob of the same track hob groups 6 is not smaller than that of the edge hob groups 5, and the arrangement of the same track hob groups 6 ensures the excavation diameter and reduces the probability of abrasion.
Further, the edge blades 11 are symmetrically arranged at the outer end portions of the face hob group 4-2, and the blade height l=95 mm or 100mm or 105mm of the edge blades 11. Impact damage to the edge scraper knife ring, the knife hub, the seal and the bearing in the tunneling process can be reduced. Thirty-six protection cutters 8 are arranged at the rear part of the thickened large circular ring 7, and the protection cutters 8 are arranged on the cutter head 1 at equal intervals along the circumferential direction and are used for protecting the thickened large circular ring and the cutter head.
Other structures are the same as in embodiment 1.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (4)
1. The utility model provides a high-efficient tunneling heavy shield cutter head, includes blade disc (1) and girder (2), its characterized in that: the cutter head (1) is connected with the main beam (2) through a box girder bracket (3), the cutter head (1) is connected with a main drive (10) arranged on the main beam (2), a radial hob group (4), an edge hob group (5) and a same track hob group (6) are arranged on the front end face of the cutter head (1), the edge hob group (5) and the same track hob group (6) are arranged between the radial hob groups (4) in a crossing way, an edge scraper (11) is arranged at the outer end part of the radial hob group (4), a thickened large circular ring (7) and a protective cutter (8) are arranged at the rear part of the cutter head (1), the protective cutter (8) is positioned behind the thickened large circular ring (7), and protective blocks (9) are arranged on both sides of the edge hob group (5) and both sides of the same track hob group (6);
the radial hob group (4) comprises a center hob group (4-1) and a face hob group (4-2), the center hob group (4-1) is arranged at the center of the cutterhead (1), the face hob group (4-2) is radially arranged along the cutterhead (1), and the face hob group (4-2) is arranged on the outer circle of the center hob group (4-1) in a divergent mode at equal angles;
the cutter head (1) is provided with a center hob group (4-1), six face hob groups (4-2), three edge hob groups (5) and three same-track hob groups (6), the edge hob groups (5) and the same-track hob groups (6) are arranged between the face hob groups (4-2) at intervals, and the excavation track radius of the same-track hob groups (6) is not smaller than that of the edge hob groups (5).
2. The high efficiency tunneling heavy shield cutterhead according to claim 1, wherein: and the hob heights H=155-165 mm of the center hob group (4-1) and the face hob group (4-2).
3. The high efficiency tunneling heavy shield cutterhead according to claim 2, wherein: the edge scrapers (11) are symmetrically arranged at the outer end parts of the face hob groups (4-2), and the cutter height L=95-105 mm of the edge scrapers (11).
4. A high efficiency tunneling heavy shield cutterhead according to claim 1 or 3, characterized in that: thirty-six protection cutters (8) are arranged at the rear part of the thickened large circular ring (7), and the protection cutters (8) are arranged on the cutter head (1) at equal intervals along the circumferential direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811037027.2A CN109113752B (en) | 2018-09-06 | 2018-09-06 | High-efficiency tunneling heavy shield cutter head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811037027.2A CN109113752B (en) | 2018-09-06 | 2018-09-06 | High-efficiency tunneling heavy shield cutter head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109113752A CN109113752A (en) | 2019-01-01 |
| CN109113752B true CN109113752B (en) | 2024-03-15 |
Family
ID=64858745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811037027.2A Active CN109113752B (en) | 2018-09-06 | 2018-09-06 | High-efficiency tunneling heavy shield cutter head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109113752B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115949421A (en) * | 2023-01-31 | 2023-04-11 | 盾科工程装备有限公司 | Cutter head structure for micro shield machine |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201588635U (en) * | 2009-12-23 | 2010-09-22 | 上海市机械施工有限公司 | Special shield cutter assembly used for rock composite formation |
| CN104060995A (en) * | 2014-07-02 | 2014-09-24 | 北京城建设计发展集团股份有限公司 | Shield cutterhead structure for uneven mutual-penetration composite rock stratum |
| CN104060996A (en) * | 2014-07-03 | 2014-09-24 | 北京城建设计发展集团股份有限公司 | Combined shield cutter disk for mutual intrusion composite rock strata with uneven hardness |
| CN104100276A (en) * | 2014-07-02 | 2014-10-15 | 北京城建设计发展集团股份有限公司 | Uneven soft or hard mutual intrusion composite rock stratum shield cutterhead type selection and cutting tool configuration technology |
| CN105971613A (en) * | 2016-05-05 | 2016-09-28 | 中铁十八局集团第四工程有限公司 | Hob arranging method for hard rock stratum shield tunneling cutterhead |
| CN209067213U (en) * | 2018-09-06 | 2019-07-05 | 中铁工程装备集团有限公司 | A kind of high efficient driving heavy type shield cutter |
-
2018
- 2018-09-06 CN CN201811037027.2A patent/CN109113752B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201588635U (en) * | 2009-12-23 | 2010-09-22 | 上海市机械施工有限公司 | Special shield cutter assembly used for rock composite formation |
| CN104060995A (en) * | 2014-07-02 | 2014-09-24 | 北京城建设计发展集团股份有限公司 | Shield cutterhead structure for uneven mutual-penetration composite rock stratum |
| CN104100276A (en) * | 2014-07-02 | 2014-10-15 | 北京城建设计发展集团股份有限公司 | Uneven soft or hard mutual intrusion composite rock stratum shield cutterhead type selection and cutting tool configuration technology |
| CN104060996A (en) * | 2014-07-03 | 2014-09-24 | 北京城建设计发展集团股份有限公司 | Combined shield cutter disk for mutual intrusion composite rock strata with uneven hardness |
| CN105971613A (en) * | 2016-05-05 | 2016-09-28 | 中铁十八局集团第四工程有限公司 | Hob arranging method for hard rock stratum shield tunneling cutterhead |
| CN209067213U (en) * | 2018-09-06 | 2019-07-05 | 中铁工程装备集团有限公司 | A kind of high efficient driving heavy type shield cutter |
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| Publication number | Publication date |
|---|---|
| CN109113752A (en) | 2019-01-01 |
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