CN116291517A - Hard rock tunneling shield cutterhead suitable for multiple excavation diameters and application method thereof - Google Patents
Hard rock tunneling shield cutterhead suitable for multiple excavation diameters and application method thereof Download PDFInfo
- Publication number
- CN116291517A CN116291517A CN202310289895.4A CN202310289895A CN116291517A CN 116291517 A CN116291517 A CN 116291517A CN 202310289895 A CN202310289895 A CN 202310289895A CN 116291517 A CN116291517 A CN 116291517A
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- China
- Prior art keywords
- edge
- cutter
- cutterhead
- panel
- hard rock
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- 238000009412 basement excavation Methods 0.000 title claims abstract description 25
- 239000011435 rock Substances 0.000 title claims abstract description 18
- 230000005641 tunneling Effects 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000003466 welding Methods 0.000 claims description 20
- 229910000831 Steel Inorganic materials 0.000 claims description 19
- 239000010959 steel Substances 0.000 claims description 19
- 230000002093 peripheral effect Effects 0.000 claims description 11
- 238000001514 detection method Methods 0.000 claims description 7
- 239000006260 foam Substances 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 230000006978 adaptation Effects 0.000 claims description 2
- 238000005498 polishing Methods 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 9
- 230000008901 benefit Effects 0.000 abstract description 6
- 238000005520 cutting process Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000009466 transformation Effects 0.000 description 4
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001131 transforming effect Effects 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
- 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
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- 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 relates to a hard rock tunneling shield cutter head suitable for various excavation diameters and an application method thereof. The invention has the advantages that: the device has the capability of adapting to a plurality of excavation diameters, and has strong adaptability; the construction efficiency is improved, the investment cost is reduced, and the method has remarkable social benefit and economic benefit.
Description
Technical Field
The invention relates to the technical field of subway tunnel construction, in particular to a hard rock tunneling shield cutter head suitable for various excavation diameters and an application method thereof.
Background
The shield machine is tunnel shield construction mechanical equipment, and the cutter head is a steel structure which is configured by the shield machine and is used for equipping various cutters to excavate stratum and support a tunnel face. The rock breaking cutter arranged on the cutter head of the hard rock tunneling shield machine is a hob, the structural size of the cutter head of the shield machine and the layout position of a hob box are designed to be fixed when leaving the factory, and the cutter head cannot be adjusted and changed in the use process.
At present, the diameters of the domestic shield tunnel designs are diversified, the cutter head of the shield machine is difficult to meet a plurality of diameter requirements through self transformation, and particularly, the hard rock tunneling cutter head is influenced by the arrangement of the hob and is inconvenient to transform the cutter head
Therefore, it is common practice to configure a plurality of cutterheads according to different diameter tunnel construction, but this not only increases the investment of unit capital cost, but also is inconvenient to manage and increases the management cost.
Disclosure of Invention
According to the defects of the prior art, the invention provides the hard rock tunneling shield cutterhead suitable for various excavation diameters and the application method thereof, and the structure of the shield cutterhead is optimally designed, so that the shield cutterhead is convenient to reform so as to adapt to various excavation diameters, the idle rate of the cutterhead is reduced, and the benefit is improved.
The invention is realized by the following technical scheme:
the utility model provides a hard rock tunnelling shield blade disc of adaptation multiple excavation diameter which characterized in that: the cutter head comprises a panel, spokes, an outer ring, an inner ring beam, single-edge hob, double-edge hob, shovel blades, edge scrapers, a large ring protection knife and a welding tearing knife, wherein the outer ring and the inner ring Liang Tongxin are arranged, the panel is welded and fixed between the outer ring and the inner ring beam, a plurality of spokes are uniformly and radially arranged on the cutter head, the double-edge hob is arranged on the spokes, two groups of single-edge hob are arranged on the panel, the edge scrapers are connected to the outermost ends of each spoke, the shovel blades are connected to the outer sides of each spoke and are positioned on the inner sides of the edge scrapers, the large ring protection knife is welded to the outer sides of the outer ring and corresponds to the positions of the single-edge hob, and the welding tearing knife is arranged on the panel and positioned between the two groups of single-edge hob.
The cutter head is provided with a cutter wear-resistant detection point and a foam port, and the cutter wear-resistant detection point and the foam port are arranged at the outer side of the spoke.
The center position of the cutter disc is provided with a cutter box, a center cutter is arranged in the cutter box, and the inner side end parts of the spokes are fixedly welded with the cutter box.
The outer ring is manufactured by adopting steel plate coil welding; the inner ring beam is of a box structure.
The application method of the hard rock tunneling shield cutterhead adapting to various excavation diameters is characterized by comprising the following steps of: the application method comprises the following steps:
removing a panel, a large ring protection knife and an edge scraper of the cutterhead, and polishing the periphery of the outer ring;
manufacturing a peripheral arc steel plate according to the new excavation diameter size, wherein the thickness size of the peripheral arc steel plate is half of the diameter of the cutterhead which needs to be enlarged and increased;
and welding the peripheral arc steel plate on the periphery of the outer ring of the cutterhead, repositioning and welding the panel and the large ring protection knife, manufacturing an edge scraper according to the new excavation radius size, and installing the edge scraper to the outermost end of a spoke of the cutterhead to realize the diameter expansion of the cutterhead.
Removing the panel, the large ring protection knife and the edge scraper of the cutter disc after expanding; and removing the peripheral arc steel plate, repositioning and welding the panel and the large ring protection knife, reinstalling the initial edge scraper, and recovering the cutterhead to the initial design size.
The invention has the advantages that: the device has the capability of adapting to a plurality of excavation diameters, and has strong adaptability; the construction efficiency is improved, the investment cost is reduced, and remarkable social and economic benefits are achieved; simple and reasonable structure, convenient transformation and multiple application scenes, and is suitable for popularization.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a first modified schematic diagram of the present invention;
FIG. 3 is a second modified schematic diagram of the present invention;
FIG. 4 is a third modified schematic diagram of the present invention;
FIG. 5 is a schematic view of the original outer Zhou Gundao blade path of the present invention;
FIG. 6 is a schematic view of the path of the outer Zhou Gundao blade after modification in accordance with the present invention;
fig. 7 is a comparison diagram of the structure of the front and rear edge scrapers after the cutter disc is changed in diameter.
Description of the embodiments
The features of the invention and other related features are described in further detail below by way of example in conjunction with the following figures to facilitate understanding by those skilled in the art:
as shown in fig. 1-7, the labels 1-13 are shown as: the steel plate comprises a panel 1, spokes 2, an outer ring 3, an inner ring beam 4, a single-blade hob 5, a double-blade hob 6, a shovel blade 7, an edge scraper 8, a large ring protection blade 9, a welding tearing blade 10, a cutter wear-resistant detection point 11, a foam port 12 and an outer circumference arc steel plate 13.
Examples: as shown in fig. 1, the hard rock tunneling shield cutterhead adapting to various excavation diameters in the embodiment is designed into a combined structure form of six spokes 2 and six panels 1, and is composed of a panel 1, spokes 2, an outer ring 3, an inner ring beam 4, a single-edge hob 5, a double-edge hob 6, a shovel blade 7, an edge scraper 8, a large ring protection blade 9, a welding tearing blade 10, a cutter wear-resistant detection point 11 and a foam port 12.
Wherein the outer ring 3 and the inner ring beam 4 are arranged concentrically, and the panel 1 is welded and fixed between the outer ring 3 and the inner ring beam 4. Six spokes 2 are evenly radial and arranged on the cutter head, the outer side end part of each spoke 2 is fixedly connected with the outer ring 3, the inner side end part is fixedly connected with a cutter box positioned at the center, and a center cutter is arranged in the center cutter box. A plurality of double-edged hob 6 are uniformly arranged on each spoke 2 along the extension direction of the spoke 2. The panels 1 are positioned between two adjacent spokes 2, and two groups of single-edge hobs 5 are uniformly distributed on each panel 1. The edge scraper 8 is bolted to the outermost end of each spoke 2 by bolts, the scraper 7 is connected to the outer side of each spoke 2 and is positioned on the inner side of the edge scraper 8, the large ring protection knife 9 is welded to the outer side of the outer ring 3 and corresponds to the position of the single-edge hob 5, and the welding tearing knife 10 is arranged on the panel 1 and is positioned between the two groups of single-edge hobs 5.
The over-digging cutter design is canceled on the cutter head of the embodiment, so that the space is saved, a front hob is added on the front of the cutter head, the arrangement quantity of edge hobs is increased, and the track line distance of hob edges is reduced.
In this embodiment, the wear-resistant detection points 11 and the foam ports 12 of the cutter are arranged at the outer side of the spoke 2, and the hob cutter is arranged in the space of the spoke 2 as much as possible, which is beneficial to improving the tunneling effect and the tunneling efficiency.
The outer ring 3 is a steel plate coil welding design; the inner ring beam 4 is of a box body structural design, so that the panel 1 is ensured to have enough secondary positioning welding space and the whole structure is ensured to be stable when being moved by expanding transformation.
The single-blade hob 6 is arranged on the spoke 2, and the single-blade hob 5 of the arc surface of the cutter disc edge is arranged on the panel 1. The joint position of the edge hob 8 and the front hob is designed to design the same track of part of edge hob and front hob, and after the edge hob is moved, the distance between the hob edges still meets the construction requirement.
The application method of the embodiment comprises the following steps:
1) As shown in fig. 2 to 4 and 7, the cutter head is required to be expanded in diameter in order to adapt to the construction of tunnels with larger excavation diameters than the current tunnel construction. The panel 1 and the large ring protection knife 9 are completely planed off by using an air planing mode, the edge scraper 8 is removed, and the periphery of the outer ring 3 is polished; preparing a peripheral arc steel plate 13 according to the new excavation diameter size, wherein the thickness size of the peripheral arc steel plate 13 is half of the diameter of a cutterhead to be enlarged and increased, welding the peripheral arc steel plate 13 on the periphery of an outer circle, and repositioning the welding panel 1 and the large circle protection cutter 9; the edge scraper 8 needs to be redesigned and manufactured, the outline dimension should meet the dimension of the excavation radius, and the edge scraper 8 is installed. So far, the cutter head size is improved.
2) The cutter head after the diameter expansion modification is restored to the designed diameter cutter head, the panel 1 and the large circular protection knife 9 are completely planed off by utilizing an air planing mode, the edge scraper 8 is removed, the outer circular arc steel plate 13 is planed off by utilizing the air planing mode, the outer periphery of the outer circular ring 3 is polished, the welding panel 1 and the large circular protection knife 9 are repositioned, and the initial edge scraper 8 is installed. So far, the cutterhead is restored to the original design size.
3) As shown in fig. 5 and 6, the cutting edge of the double-edge hob 6 of the cutterhead is 1# -32# cutting edge, the cutting edge of the edge single-edge hob 5 is 33# -44# cutting edge, and the 31# cutting edge and the 33# cutting edge are overlapped. And (3) carrying out expanding transformation on the cutter head in the mode of the step (2), moving the panel (1) outwards to carry out secondary positioning, and moving the single-blade hob (5) blades at all edges along with the thickness dimension of the arc steel plate (13) outside the whole panel (1), wherein the 31# blades and the 33# blades are staggered, and the 33# blades are supplemented to the position of the moving range, so that the track of the hob blades after expanding still meets the construction requirement.
4) The application method in the embodiment is used for expanding the initial structure size of the cutterhead of the hard rock tunneling shield machine and transforming the cutterhead into a cutterhead with a larger excavation diameter. And 2, repeating the steps 2 and 3, so that the reconstruction of any size from the factory structural size to the maximum diameter expansion size of the cutter head can be realized, the adaptability of the cutter head is improved, and the investment cost is reduced.
Although the foregoing embodiments have been described in some detail with reference to the accompanying drawings, it will be appreciated by those skilled in the art that various modifications and changes may be made thereto without departing from the scope of the invention as defined in the appended claims, and thus are not repeated herein.
Claims (6)
1. The utility model provides a hard rock tunnelling shield blade disc of adaptation multiple excavation diameter which characterized in that: the cutter head comprises a panel, spokes, an outer ring, an inner ring beam, single-edge hob, double-edge hob, shovel blades, edge scrapers, a large ring protection knife and a welding tearing knife, wherein the outer ring and the inner ring Liang Tongxin are arranged, the panel is welded and fixed between the outer ring and the inner ring beam, a plurality of spokes are uniformly and radially arranged on the cutter head, the double-edge hob is arranged on the spokes, two groups of single-edge hob are arranged on the panel, the edge scrapers are connected to the outermost ends of each spoke, the shovel blades are connected to the outer sides of each spoke and are positioned on the inner sides of the edge scrapers, the large ring protection knife is welded to the outer sides of the outer ring and corresponds to the positions of the single-edge hob, and the welding tearing knife is arranged on the panel and positioned between the two groups of single-edge hob.
2. A hard rock tunneling shield cutter head adapting to multiple excavation diameters according to claim 1, wherein: the cutter head is provided with a cutter wear-resistant detection point and a foam port, and the cutter wear-resistant detection point and the foam port are arranged at the outer side of the spoke.
3. A hard rock tunneling shield cutter head adapting to multiple excavation diameters according to claim 1, wherein: the center position of the cutter disc is provided with a cutter box, a center cutter is arranged in the cutter box, and the inner side end parts of the spokes are fixedly welded with the cutter box.
4. A hard rock tunneling shield cutter head adapting to multiple excavation diameters according to claim 1, wherein: the outer ring is manufactured by adopting steel plate coil welding; the inner ring beam is of a box structure.
5. An application method of the hard rock tunneling shield cutterhead adapting to various excavation diameters according to any one of claims 1-4, which is characterized in that: the application method comprises the following steps:
removing a panel, a large ring protection knife and an edge scraper of the cutterhead, and polishing the periphery of the outer ring;
manufacturing a peripheral arc steel plate according to the new excavation diameter size, wherein the thickness size of the peripheral arc steel plate is half of the diameter of the cutterhead which needs to be enlarged and increased;
and welding the peripheral arc steel plate on the periphery of the outer ring of the cutterhead, repositioning and welding the panel and the large ring protection knife, manufacturing an edge scraper according to the new excavation radius size, and installing the edge scraper to the outermost end of a spoke of the cutterhead to realize the diameter expansion of the cutterhead.
6. The application method of the hard rock tunneling shield cutterhead adapting to various excavation diameters, which is characterized by comprising the following steps of: removing the panel, the large ring protection knife and the edge scraper of the cutter disc after expanding; and removing the peripheral arc steel plate, repositioning and welding the panel and the large ring protection knife, reinstalling the initial edge scraper, and recovering the cutterhead to the initial design size.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310289895.4A CN116291517A (en) | 2023-03-23 | 2023-03-23 | Hard rock tunneling shield cutterhead suitable for multiple excavation diameters and application method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310289895.4A CN116291517A (en) | 2023-03-23 | 2023-03-23 | Hard rock tunneling shield cutterhead suitable for multiple excavation diameters and application method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116291517A true CN116291517A (en) | 2023-06-23 |
Family
ID=86794006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310289895.4A Pending CN116291517A (en) | 2023-03-23 | 2023-03-23 | Hard rock tunneling shield cutterhead suitable for multiple excavation diameters and application method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116291517A (en) |
-
2023
- 2023-03-23 CN CN202310289895.4A patent/CN116291517A/en active Pending
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