CN113431598A - Small-diameter cutter head with novel cutter mounting mode and tunnel boring machine - Google Patents
Small-diameter cutter head with novel cutter mounting mode and tunnel boring machine Download PDFInfo
- Publication number
- CN113431598A CN113431598A CN202110906592.3A CN202110906592A CN113431598A CN 113431598 A CN113431598 A CN 113431598A CN 202110906592 A CN202110906592 A CN 202110906592A CN 113431598 A CN113431598 A CN 113431598A
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- hob
- cutter
- block
- small
- diameter
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- 230000007704 transition Effects 0.000 claims abstract description 44
- 238000009434 installation Methods 0.000 claims description 5
- 229910000975 Carbon steel Inorganic materials 0.000 claims description 3
- 239000010962 carbon steel Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 2
- 230000006835 compression Effects 0.000 claims 1
- 238000007906 compression Methods 0.000 claims 1
- 239000011435 rock Substances 0.000 abstract description 6
- 230000005641 tunneling Effects 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000005452 bending Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Images
Classifications
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- 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
- E21D9/10—Making by using boring or cutting machines
- E21D9/11—Making by using boring or cutting machines 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)
- Gear Processing (AREA)
Abstract
According to the small-diameter cutter head with the novel cutter mounting mode, when a hob is mounted, a wedge block and a transition block are pre-mounted in a cutter base, the hob is placed in a mounting position of the cutter base, and meanwhile an end cover of the hob is matched with the transition block to support the lower surface of the end cover of the hob; a pressing block is installed, is matched with an end cover of the hob and fixes the hob through a contact surface so as to bear vibration and lateral force when the hob breaks rock; and the locking standard part penetrates through the pressing block, the transition block, the wedge block and the cutter holder in sequence and is locked, and finally the hob is firmly fixed on the cutter holder. This minor diameter blade disc with novel cutter mounting means through the locking mode that changes the hobbing cutter, and the structure is more compact, can effectively reduce the size of blade holder, and the atress is better, can improve the life of blade holder greatly. Meanwhile, the number and specification size of cutters of the small-diameter cutter head are ensured, and the tunneling efficiency of the small-diameter cutter head is kept. The scheme also provides a tunnel boring machine with the small-diameter cutter head, and the tunnel boring machine has the beneficial effects.
Description
Technical Field
The invention belongs to the technical field of TBM cutterheads, and particularly relates to a small-diameter cutterhead with a novel cutter mounting mode and a tunnel boring machine.
Background
At present, in the design of a cutter head of a full-face rock tunnel boring machine, the arrangement of hobs is limited by the rock strength and the cutter property, and the distance between adjacent path hobs (cutter distance) cannot be too large.
Generally, a medium-diameter cutter head and a large-diameter cutter head have large sizes, a manual operation space is arranged at the rear part of the cutter head, a back mounting mode is usually adopted for installing a hob, a wedge block is adopted for locking the hob, and a small-diameter cutter head does not have enough operation space and usually needs a tool changing mode at the front part of the cutter head.
When the diameter of the cutterhead becomes smaller, the more difficult the arrangement of the cutters is, the smaller-diameter cutterhead is often realized by reducing the size of the hob or reducing the size of the tool apron, but the reduction of the hob model can cause the corresponding tunneling efficiency to be low.
Therefore, how to maintain the tunneling efficiency of the small-diameter cutter head is a technical problem to be solved urgently by the technical personnel in the field.
Disclosure of Invention
The invention aims to provide a small-diameter cutter head with a novel cutter mounting mode and a tunnel boring machine.
In order to solve the technical problem, the invention provides a small-diameter cutter head with a novel cutter mounting mode, which comprises a hob, a cutter holder and a clamping device;
the cutter holder is provided with a mounting position for accommodating the hob and is used for connecting a cutter head panel;
the clamping devices are respectively arranged on two sides of the hob and comprise wedge blocks, transition blocks, pressing blocks and locking standard parts and are used for clamping end covers of the hob; wherein the content of the first and second substances,
the wedge block is used for connecting the tool apron and the transition block;
the transition block is used for providing upward supporting force for an end cover of the hob;
the pressing block is used for providing downward pressing force for an end cover of the hob;
the locking standard part is used for sequentially penetrating through the pressing block, the transition block, the wedge block and the tool apron and locking.
Optionally, an end cover of the hob is provided with a straight surface and/or an inclined surface for respectively matching with the transition block and the pressing block.
Optionally, a contact surface of the wedge and the transition block is an inclined surface, and a contact surface of the wedge and the tool holder is a bent surface, so as to balance the force of the wedge in the horizontal direction before the locking standard component is inserted and locked.
Optionally, the tool apron and the transition block are made of carbon steel respectively.
Optionally, the wedge block and the transition block are of an integrally formed structure.
Optionally, the locking standard is a locking bolt.
Optionally, the tool apron and the cutter head panel are detachably connected or welded.
Optionally, the mounting positions are arranged on the tool apron at intervals.
Optionally, the clamping device between two adjacent tool seats is a clamping device for clamping and matching two tool seats simultaneously.
This scheme still provides a tunnel boring machine, includes as above the minor diameter blade disc that has novel cutter mounting means.
This scheme provides a minor diameter blade disc with novel cutter mounting means, and beneficial effect lies in:
when the hob is installed, the wedge block and the transition block are preassembled into the hob seat, then the hob is placed into the installation position of the hob seat, and meanwhile, an end cover of the hob is matched with the transition block to support the lower surface of the end cover of the hob; a pressing block is installed, is matched with an end cover of the hob and fixes the hob through a contact surface so as to bear vibration and lateral force when the hob breaks rock; and the locking standard part sequentially penetrates through the pressing block, the transition block, the wedge block and the cutter holder and is locked, and finally the hob is firmly fixed on the cutter holder by the clamping device.
The small diameter blade disc that the present case provided, through the locking mode that changes the hobbing cutter, the structure is more compact, can effectively reduce the size of blade holder, and the atress is better, can improve the life of blade holder greatly. Meanwhile, the number and specification size of cutters of the small-diameter cutter head are ensured, and the tunneling efficiency of the small-diameter cutter head is kept.
The invention also provides a tunnel boring machine with the small-diameter cutter head, so that the tunnel boring machine also has the beneficial effects, and the detailed description is omitted.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a top view of a small-diameter cutter head provided by the scheme;
fig. 2 is a sectional view taken along a-a of fig. 1.
In the upper diagram:
the hob comprises a hob 1, a hob holder 2, a wedge block 3, a transition block 4, a pressing block 5, a locking standard part 6, contact surfaces A-E and a hob head panel M.
Detailed Description
The core of the invention is to provide a small-diameter cutter head with a novel cutter mounting mode, and the size of a cutter seat is reduced by changing the locking mode of a hob, so that the number and the specification of cutters of the small-diameter cutter head are ensured, and the tunneling efficiency of the small-diameter cutter head is kept.
In order to make those skilled in the art better understand the technical solutions provided by the present invention, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1 and 2, the invention provides a small-diameter cutter head, which comprises a hob 1, a cutter holder 2 and a clamping device.
The tool apron 2 is provided with an installation position for accommodating the hob 1, the tool apron 2 is used for being connected with a cutterhead panel M, specifically, the tool apron 2 can be welded to the cutterhead panel M, of course, other connection modes can be adopted, such as detachable connection, or welding connection and the like after detachable connection, adaptability selection can be performed according to actual requirements, and any connection mode is within the protection range of the scheme.
And two clamping devices are respectively arranged on two sides of the hob 1 and are used for clamping the end cover of the hob 1.
The clamping device comprises a wedge block 3, a transition block 4, a pressing block 5 and a locking standard part 6. The wedge block 3 is used for connecting the tool apron 2 and the transition block 4; the transition block 4 is used for providing upward supporting force for the end cover of the hob 1; the pressing block 5 is used for providing downward pressing force for the end cover of the hob 1; through holes for inserting the locking standard parts are formed in the relative positions of the pressing block 5, the transition block 4, the wedge block 3 and the tool holder 2. And the locking standard part 6 is used for sequentially penetrating through the through holes of the pressing block 5, the transition block 4, the wedge block 3 and the tool apron 2 and locking.
In the above-mentioned setting, hobbing cutter 1's end cover and transition piece 4 and compact heap 5 phase-match, blade holder 2 is connected with cutter head panel M, voussoir 3 and transition piece 4 and blade holder 2 contact, transition piece 4 and voussoir 3 and hobbing cutter 1 contact, compact heap 5 compresses tightly hobbing cutter 1 to transition piece 4 through locking standard component 6.
When the hob 1 is installed, the wedge blocks 3 and the transition blocks 4 are pre-installed in the hob holder 2, the hob 1 is placed in the installation position of the hob holder 2, and meanwhile, the end covers of the hob 1 are matched with the transition blocks 4 to support the lower surfaces of the end covers of the hob 1; a pressing block 5 is installed and matched with an end cover of the hob 1; the locking standard part 6 penetrates through the pressing block 5, the transition block 4, the wedge block 3 and the tool apron 2 and is locked, and finally the hob 1 is firmly fixed on the tool apron 2 by the clamping device. The process of replacing the hob 1 is the reverse of the installation process described above and will not be described in detail here.
The stress transmission mode of each part of the small-diameter cutter head is as follows: the radial force of the hob 1 is transmitted to the transition block 4 through the contact surface B, then transmitted to the wedge block 3 through the contact surface C, then transmitted to the tool apron 2 through the contact surfaces D and E, and then transmitted to the cutterhead panel M. The hob 1 is fixed by the pressing block 5 through the contact surface A so as to bear the vibration and the lateral force when the hob breaks rock. The stress angle of the hob 1 and the transition block 4 and the angle of the wedge block 3 are obtained through strict stress calculation, and the stress of each part can be effectively reduced. Through the locking mode that changes the hobbing cutter, the structure of minor diameter blade disc is more compact, can effectively reduce the size of blade holder 2, and the atress is better, can improve the life of blade holder greatly. Meanwhile, the number and specification size of cutters of the small-diameter cutter head are ensured, and the tunneling efficiency of the small-diameter cutter head is kept.
In this embodiment, the end cap of the hob 1 is provided with straight faces and/or inclined faces for respectively cooperating with the transition block 4 and the pressing block 5. As shown in fig. 2, the contact surfaces of the transition block 4 and the end cap of the hob 1 are both inclined surfaces, i.e. the surfaces are non-horizontal and non-vertical. The contact surfaces of the end covers of the pressing block 5 and the hob 1 are straight surfaces, the pressing block 5 is a rectangular block, and the contact surface of the end cover of the hob 1 comprises a horizontal surface and a vertical surface. The hob 1 is fixed through the contact surface A by the pressing block 5, and force is applied in the horizontal direction and the vertical direction so as to bear vibration and lateral force when the hob breaks rock.
Similarly, the contact surface of the wedge 3 and the transition block 4 is an inclined surface, and the contact surface of the wedge 3 and the tool holder 2 is a bending surface, so that the force balance of the wedge 3 in the horizontal direction before the locking standard part 6 is inserted and locked is realized. The bending surfaces include both horizontal and vertical surfaces. The transition block 4 transmits the force of the hob 1 to the wedge block 3 and then to the tool apron 2 through the wedge block 3.
The tool apron 2 and the cutter head panel M are detachably connected or welded. The tool apron 2 and the transition block 4 can be made of common carbon steel materials, so that the welding performance with a cutter head panel can be improved, and the stability is improved. In addition, the wedge block 3 and the transition block 4 can be of split structures, so that later maintenance is facilitated, and of course, the wedge block can also be of an integrally formed structure.
Specifically, the locking standard component 6 is a locking bolt, an internal thread is arranged in the through hole of the tool apron 2, and the end part of the locking bolt can be directly screwed on the tool apron 2.
Further, a plurality of hobs 1 are arranged on the tool apron 2, and the installation positions are arranged on the tool apron 2 at intervals. In order to reduce the space requirement and to reduce the size of the hob base as much as possible, the clamping device between two adjacent hob bases 2 can be designed as a clamping device which can be used to simultaneously clamp two hob bases 2.
In addition, this application still discloses a tunnel boring machine, including the minor diameter blade disc that has novel cutter mounting means, this minor diameter blade disc is as the minor diameter blade disc that has novel cutter mounting means as disclosed in the above-mentioned embodiment. Therefore, the tunnel boring machine with the small-diameter cutter head with the novel cutter mounting mode also has all the technical effects, and the detailed description is omitted.
The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (8)
1. A small-diameter cutter head with a novel cutter mounting mode is characterized by comprising a hob (1), a cutter holder (2) and a clamping device;
the tool apron (2) is provided with an installation position for accommodating the hob (1), and the tool apron (2) is used for being connected with a cutter head panel (M);
the clamping devices are respectively arranged on two sides of the hob (1) and comprise wedge blocks (3), transition blocks (4), pressing blocks (5) and locking standard parts (6) and are used for clamping end covers of the hob (1); wherein the content of the first and second substances,
the wedge block (3) is used for connecting the tool holder (2) and the transition block (4);
the transition block (4) is used for providing upward supporting force for an end cover of the hob (1);
the pressing block (5) is used for providing downward pressing force for an end cover of the hob (1);
the locking standard part (6) is used for sequentially penetrating through the pressing block (5), the transition block (4), the wedge block (3) and the tool apron (2) and locking.
2. Small diameter cutterhead with novel tool mounting according to claim 1, characterized in that the end cover of the hob (1) is provided with straight and/or inclined faces for cooperation with the transition block (4) and the compression block (5) respectively.
3. The small-diameter cutter head with a novel cutter mounting mode according to claim 1, characterized in that the contact surface of the wedge block (3) and the transition block (4) is an inclined surface, and the contact surface of the wedge block (3) and the cutter seat (2) is a bent surface, so that the force balance of the wedge block (3) in the horizontal direction before the locking standard part (6) is inserted and locked is realized.
4. The small-diameter cutter head with a novel cutter mounting mode according to claim 1, wherein the cutter seat (2) and the transition block (4) are respectively a cutter seat and a transition block made of carbon steel.
5. The small-diameter cutter head with a novel cutter mounting manner according to claim 1, wherein the wedge block (3) and the transition block (4) are of an integrally formed structure.
6. A small diameter cutterhead with novel tool mounting arrangement according to claim 1, characterized in that said locking standard (6) is a locking bolt.
7. The small-diameter cutterhead with novel tool mounting manner according to claim 1, wherein the cutterhead panel (M) is detachably connected or welded with the cutterhead seat (2).
8. A tunnel boring machine including a small diameter cutterhead with a novel cutter mounting arrangement as claimed in any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110906592.3A CN113431598A (en) | 2021-08-09 | 2021-08-09 | Small-diameter cutter head with novel cutter mounting mode and tunnel boring machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110906592.3A CN113431598A (en) | 2021-08-09 | 2021-08-09 | Small-diameter cutter head with novel cutter mounting mode and tunnel boring machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113431598A true CN113431598A (en) | 2021-09-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110906592.3A Pending CN113431598A (en) | 2021-08-09 | 2021-08-09 | Small-diameter cutter head with novel cutter mounting mode and tunnel boring machine |
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| CN (1) | CN113431598A (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1507977A (en) * | 1974-03-27 | 1978-04-19 | Mott Hay & Anderson | Tunnel linings |
| JPH02232500A (en) * | 1988-11-03 | 1990-09-14 | Gerhard Sauer | Method and device for reinforcing bedrock |
| US5421422A (en) * | 1993-11-19 | 1995-06-06 | Boretec Inc | Roller cutter mount for tunneling machine |
| US20030044246A1 (en) * | 2001-09-06 | 2003-03-06 | Erickson Robert A. | Face hobbing cutter |
| CN102322270A (en) * | 2011-08-30 | 2012-01-18 | 中国铁建重工集团有限公司 | Shield cutter for composite ground |
| CN204804854U (en) * | 2015-07-23 | 2015-11-25 | 罗宾斯（上海）地下工程设备有限公司 | Cutter head's hobbing cutter fixing device |
| CN105089676A (en) * | 2015-08-05 | 2015-11-25 | 中铁工程装备集团有限公司 | Edge hob overexcavation device and long-distance hard rock tunneling boring machine overexcavation cutter |
| CN106050253A (en) * | 2015-04-08 | 2016-10-26 | Nfm技术公司 | Excavating tool for a tunnel boring machine and boring machine comprising such tool |
| CN108691551A (en) * | 2018-06-29 | 2018-10-23 | 中铁工程装备集团有限公司 | A kind of novel muzzle-loading normal pressure tool changing knife wound packages is set and its installation method |
| CN109763833A (en) * | 2019-03-29 | 2019-05-17 | 中国铁建重工集团有限公司 | A kind of development machine and its central hob axial locking device |
| CN210127853U (en) * | 2019-03-29 | 2020-03-06 | 中国铁建重工集团股份有限公司 | Heading machine and axial locking device of central hob thereof |
| CN211777444U (en) * | 2020-03-30 | 2020-10-27 | 中铁工程装备集团有限公司 | Double-shaft double-edge hob fixing device for normal-pressure tool changing cutterhead |
| CN213419102U (en) * | 2020-10-23 | 2021-06-11 | 中铁工程装备集团有限公司 | Normal pressure hobbing cutter barrel |
-
2021
- 2021-08-09 CN CN202110906592.3A patent/CN113431598A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1507977A (en) * | 1974-03-27 | 1978-04-19 | Mott Hay & Anderson | Tunnel linings |
| JPH02232500A (en) * | 1988-11-03 | 1990-09-14 | Gerhard Sauer | Method and device for reinforcing bedrock |
| US5421422A (en) * | 1993-11-19 | 1995-06-06 | Boretec Inc | Roller cutter mount for tunneling machine |
| US20030044246A1 (en) * | 2001-09-06 | 2003-03-06 | Erickson Robert A. | Face hobbing cutter |
| CN102322270A (en) * | 2011-08-30 | 2012-01-18 | 中国铁建重工集团有限公司 | Shield cutter for composite ground |
| CN106050253A (en) * | 2015-04-08 | 2016-10-26 | Nfm技术公司 | Excavating tool for a tunnel boring machine and boring machine comprising such tool |
| CN204804854U (en) * | 2015-07-23 | 2015-11-25 | 罗宾斯（上海）地下工程设备有限公司 | Cutter head's hobbing cutter fixing device |
| CN105089676A (en) * | 2015-08-05 | 2015-11-25 | 中铁工程装备集团有限公司 | Edge hob overexcavation device and long-distance hard rock tunneling boring machine overexcavation cutter |
| CN108691551A (en) * | 2018-06-29 | 2018-10-23 | 中铁工程装备集团有限公司 | A kind of novel muzzle-loading normal pressure tool changing knife wound packages is set and its installation method |
| CN109763833A (en) * | 2019-03-29 | 2019-05-17 | 中国铁建重工集团有限公司 | A kind of development machine and its central hob axial locking device |
| CN210127853U (en) * | 2019-03-29 | 2020-03-06 | 中国铁建重工集团股份有限公司 | Heading machine and axial locking device of central hob thereof |
| CN211777444U (en) * | 2020-03-30 | 2020-10-27 | 中铁工程装备集团有限公司 | Double-shaft double-edge hob fixing device for normal-pressure tool changing cutterhead |
| CN213419102U (en) * | 2020-10-23 | 2021-06-11 | 中铁工程装备集团有限公司 | Normal pressure hobbing cutter barrel |
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