CN108825258B - Heading machine and super-digging cutter thereof - Google Patents
Heading machine and super-digging cutter thereof Download PDFInfo
- Publication number
- CN108825258B CN108825258B CN201811032607.2A CN201811032607A CN108825258B CN 108825258 B CN108825258 B CN 108825258B CN 201811032607 A CN201811032607 A CN 201811032607A CN 108825258 B CN108825258 B CN 108825258B
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- cutter
- wall
- guide rail
- super
- sleeve
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- 238000007789 sealing Methods 0.000 claims abstract description 27
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 7
- 238000003825 pressing Methods 0.000 claims description 11
- 230000001681 protective effect Effects 0.000 claims description 9
- 239000012530 fluid Substances 0.000 claims description 4
- 230000007306 turnover Effects 0.000 claims description 4
- 238000010276 construction Methods 0.000 abstract description 12
- 239000003921 oil Substances 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 8
- 238000009434 installation Methods 0.000 description 3
- 230000005641 tunneling Effects 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000004576 sand Substances 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
- E21D9/10—Making by using boring or cutting machines
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 an ultra-digging cutter of a heading machine, which comprises a hollow cutter head and guide rail sleeves which are arranged in the cutter head and are provided with openings at two ends, wherein the outer ends of the guide rail sleeves extend out of the outer ends of the cutter head, a cutter seat is coaxially arranged in the guide rail sleeves, the cutter seat can stretch out and draw back along the extending direction of the guide rail sleeves, a cutter is detachably arranged at the outer ends of the cutter seat, a cylinder barrel is arranged in the guide rail sleeves, a raised piston in sealing contact with the inner wall of the cylinder barrel is arranged at the periphery of the middle part of the cutter seat, oil ports for hydraulic oil to enter and exit are arranged at the two ends of the cylinder barrel, and a mounting port for the cutter to enter and exit is arranged on the side surface of the cutter head. The cutter is taken out from the rear side of the cutter head, a cavity is not required to be cut from the side face of the super-digging cutter, the super-digging cutter can be quickly replaced, the super-digging cutter replacing efficiency is improved, the construction cost is reduced, and the construction safety is improved. The invention also discloses a heading machine comprising the super-digging cutter.
Description
Technical Field
The invention relates to the field of tunneling equipment, in particular to an ultra-digging cutter of a tunneling machine. In addition, the invention also relates to a heading machine comprising the super-cutter.
Background
The heading machine is a main tool used in the current underground tunnel engineering, and is widely applied to the infrastructure engineering of urban subways, water conservancy and hydropower, railways, highways and the like. In general, the tunneling machine needs to radially expand and dig the tunnel by using an overexcavation cutter during turning and deviation correcting operations or before replacing the outmost hob. It can be seen that the super-cutting tool is one of the important tools equipped with the composite cutter head. Once the super-digging cutter is severely worn or damaged, the expanding digging capacity and the construction efficiency of the heading machine are greatly influenced.
When replacing a new super-cutter, the existing method is to firstly cut off the oil cylinder cover plate, and a cavity is needed to be cut on the side cavity wall of the super-cutter position, and then the worker replaces the super-cutter by utilizing the cavity space. The operation mode needs to be matched with multiple kinds of work such as manual cutting, in-hole welding and the like, the operation process is complex, the operation danger is high, the construction efficiency is low, and the construction progress is seriously influenced.
Therefore, how to provide an ultra-digging cutter which not only meets the ultra-digging function, but also can realize safe and convenient replacement in a limited and severe environment is a technical problem which needs to be solved by the person skilled in the art at present.
Disclosure of Invention
The invention aims to provide an overexcavation cutter of a heading machine, wherein the side surface of a cutter head is provided with a mounting opening, and each part can be detached and replaced through the mounting opening, so that the overexcavation function is met, and meanwhile, the safe and convenient replacement can be realized in a limited and severe environment. Another object of the invention is to provide a heading machine comprising the above-mentioned super-cutter.
In order to solve the technical problems, the invention provides an overdreaping cutter of a heading machine, which comprises a hollow cutter head and guide rail sleeves which are arranged in the cutter head and are provided with openings at two ends, wherein the outer ends of the guide rail sleeves extend out of the outer ends of the cutter head, a cutter holder is coaxially arranged in the guide rail sleeves, the cutter holder can stretch out and draw back along the extending direction of the guide rail sleeves, a cutter is detachably arranged at the outer end of the cutter holder, a cylinder barrel is arranged in the guide rail sleeve, a raised piston in sealing contact with the inner wall of the cylinder barrel is arranged at the periphery of the middle part of the cutter holder, oil ports for hydraulic oil to enter and exit are arranged at the two ends of the cylinder barrel, and an installation port for the cutter to enter and exit is arranged on the side surface of the cutter head.
Preferably, the guide rail sleeve is internally provided with a stepped hole, the diameter of the outer end of the stepped hole is smaller than the diameter of the inner end of the guide rail sleeve, the cylinder barrel is mounted at the inner end of the stepped hole, an outer guide sleeve is coaxially arranged at the outer end of the cylinder barrel, two ends of the outer guide sleeve respectively abut against the outer end face of the cylinder barrel and steps of the stepped hole, the inner wall of the outer guide sleeve is in sealing contact with the outer wall of the tool apron, an inner guide sleeve is coaxially arranged at the inner end of the cylinder barrel, abuts against the inner end face of the cylinder barrel and is detachably connected with the inner end of the guide rail sleeve, the inner wall of the inner guide sleeve is in sealing contact with the outer wall of the tool apron, and the inner wall of the outer end of the stepped hole is in sealing contact with the outer wall of the tool apron.
Preferably, a first sealing ring is arranged on the inner wall of the outer end of the stepped hole, and a second sealing ring is arranged on the outer wall of the piston, the inner wall of the outer guide sleeve and the inner wall of the inner guide sleeve.
Preferably, the cutter both sides are provided with the connecting piece, the blade holder is inside to be provided with and is used for the cutter business turn over and runs through the mounting hole at blade holder both ends, the cutter part stretch out in the mounting hole outer end, be provided with the constant head tank on the mounting hole inner wall, be provided with in the constant head tank with the voussoir of connecting piece contact, still include with the voussoir reaches the briquetting of connecting piece detachable connection is used for fixing the position of cutter.
Preferably, the pressing block is connected with the connecting piece and the wedge block through bolts.
Preferably, the mounting port is detachably provided with a cover plate.
Preferably, the knife is in particular a double-edged hob, a tooth knife or a tearing knife.
Preferably, the guide ring extending out of the inner end of the guide rail sleeve is detachably mounted on the inner end surface of the tool apron, an axially extending sliding groove is formed in the periphery of the guide ring, a first protection cover for shielding the inner end surface and the outer wall of the tool apron is detachably mounted on the inner end surface of the guide rail sleeve, and an axially extending guide key is detachably mounted on the inner wall of the first protection cover and mounted in the sliding groove and can axially move along the sliding groove.
Preferably, the first protective cover is detachably provided with a second protective cover for sealing contact with the inner wall of the tool holder.
The invention provides a heading machine, which comprises a frame and an ultra-digging cutter arranged on the frame, wherein the ultra-digging cutter is specifically any one of the ultra-digging cutters.
The invention provides an ultra-digging cutter of a heading machine, which comprises a hollow cutter head and guide rail sleeves which are arranged in the cutter head and are provided with openings at two ends, wherein the outer ends of the guide rail sleeves extend out of the outer ends of the cutter head, a cutter seat is coaxially arranged in the guide rail sleeves, the cutter seat can stretch out and draw back along the extending direction of the guide rail sleeves, a cutter is detachably arranged at the outer ends of the cutter seat, a cylinder barrel is arranged in the guide rail sleeves, a raised piston in sealing contact with the inner wall of the cylinder barrel is arranged at the periphery of the middle part of the cutter seat, oil ports for hydraulic oil to enter and exit are arranged at the two ends of the cylinder barrel, and a mounting port for the cutter to enter and exit is arranged on the side surface of the cutter head.
During working, hydraulic oil enters the cylinder barrel to drive the tool apron to stretch out and draw back, and then drives the tool to stretch out and draw back in the guide rail sleeve, so that the expanding and digging function of the face is realized, great convenience is brought to construction such as turning, deviation correction and tool replacement of the outermost side of the heading machine, when the tool needs to be replaced, the connecting piece and the tool fastener are removed, the tool is taken out from the mounting opening, and then the replacement of the tool is completed. The cutter is taken out from the rear side of the cutter head, a cavity is not required to be cut from the side face of the super-digging cutter, the super-digging cutter can be quickly replaced, the super-digging cutter replacing efficiency is improved, the construction cost is reduced, and the construction safety is improved.
The invention also provides a heading machine comprising the super-digging cutter, and the technical effects of the super-digging cutter are the same as those of the heading machine, and the detailed description of the heading machine is omitted.
Drawings
FIG. 1 is a schematic front view of an embodiment of a super cutter according to the present invention;
FIG. 2 is an A-direction cross-sectional view of one embodiment of a super cutter provided by the present invention;
FIG. 3 is a B-direction cross-sectional view of one embodiment of a super cutter provided by the present invention;
fig. 4 is a view showing a disassembly process of an embodiment of the super cutter according to the present invention.
Detailed Description
The invention aims to provide an overexcavation cutter of a heading machine, wherein the side surface of a cutter head is provided with a mounting opening, and each part can be detached and replaced through the mounting opening, so that the overexcavation function is met, and meanwhile, the safe and convenient replacement can be realized in a limited and severe environment. Another object of the invention is to provide a heading machine comprising the above-mentioned super-cutter.
In order to better understand the aspects of the present invention, the present invention will be described in further detail with reference to the accompanying drawings and detailed description.
Referring to fig. 1 to 4, fig. 1 is a schematic front view of an embodiment of a super-cutter according to the present invention; FIG. 2 is an A-direction cross-sectional view of one embodiment of a super cutter provided by the present invention; FIG. 3 is a B-direction cross-sectional view of one embodiment of a super cutter provided by the present invention; fig. 4 is a view showing a disassembly process of an embodiment of the super cutter according to the present invention.
The invention provides an ultra-digging cutter of a heading machine, which comprises a cutter head 18, a guide rail sleeve 12, a cutter holder 3, a cylinder 5 and a cutter 1. Wherein, each part is close to the one end that equipment kept away from cutter 1 and is the inner, and the one end that is close to the cutter and is kept away from equipment is the outer end, and blade disc 18 cavity, the one end that keeps away from equipment is provided with the opening, and guide rail sleeve 12 sets up in blade disc 18 inside, guide rail sleeve 12 both ends opening, and the outer end of guide rail sleeve 12 stretches out in the outer end of blade disc 18. The cutterhead 18 and the guide rail sleeve 12 may be connected by welding or by bolting. The guide rail sleeve 12 is internally and coaxially provided with the tool apron 3, the tool apron 3 can stretch out and draw back along the extending direction of the guide rail sleeve 12, the outer end of the tool apron 3 is detachably provided with the tool 1, namely the tool 1 can extend to the outside, and the side face of the tool head 18 is provided with an installing port for the tool 1 to enter and exit.
According to the requirement of excavation, the cutter 1 needs to be obliquely arranged, so that the side walls of the cutter head 18 are arranged to be different in length, the opening is inclined, the cutter seat 3 is obliquely arranged, the cutter 1 mounted on the cutter seat 3 can also be obliquely arranged, and meanwhile, the inner end of the cutter seat 3 is aligned with the mounting opening on the side face of the cutter head 18, so that the cutter head is convenient to detach and replace.
The guide rail sleeve 12 internally mounted has the cylinder 5, and the periphery at blade holder 3 middle part is provided with bellied piston, and blade holder 3 other parts are regarded as the piston rod to set up the sealing member at cylinder 5 both ends, form enclosed construction, cylinder 5 both ends are provided with the hydraulic fluid port that is used for hydraulic oil business turn over, cylinder 5 inner wall sealing contact piston, form hydraulic cylinder structure through above-mentioned part, hydraulic fluid passes through the hydraulic fluid port and gets into cylinder 5 inside, promotes piston axial displacement, realizes the flexible of cutter 1. In order to facilitate connection of the hydraulic lines, openings may be provided in the guide rail sleeve 12 at positions corresponding to the oil ports.
In the working process, hydraulic oil enters and exits the closed space formed by the cylinder 5 through the oil port, can push the piston to move, so as to drive the tool apron 3 to stretch out and draw back, and further drive the tool 1 to stretch out and draw back in the guide rail sleeve 12, so that the expanding and digging function of the face is realized, great convenience is brought to construction such as turning, correcting and replacing the outermost tool of the heading machine, and when the tool 1 needs to be replaced, the connecting piece and the tool fastener are removed, the tool 1 is taken out through the mounting port, and then the replacement of the tool 1 is completed. The cutter 1 can be taken out from the rear side of the cutter head 18, a cavity is not required to be cut from the side face of the super-digging cutter, the super-digging cutter can be quickly replaced, the super-digging cutter replacing efficiency is improved, the construction cost is reduced, the construction safety is improved, the structure is more compact, and the space is saved.
In order to form a stable hydraulic cylinder structure, the guide rail sleeve 12 is internally provided with a stepped hole, the diameter of the outer end of the stepped hole is smaller than that of the inner end, the cylinder 5 is arranged at the inner end of the stepped hole, the inner diameter of the cylinder 5 is larger than that of the outer end of the stepped hole, the diameter of the piston is matched with that of the cylinder 5, after the cylinder 5 and the tool apron 3 are arranged, the outer wall of the outer end of the tool apron 3 is in sealing contact with the inner wall of the smaller diameter part of the outer end of the stepped hole, a space is reserved between the outer wall of the part of the tool apron 3 corresponding to the cylinder 5 and the inner wall of the cylinder 5, and the piston separates the space into two mutually independent spaces.
The inner end of the stepped hole is also provided with an outer guide sleeve 4 and an inner guide sleeve 7 which are coaxial with the cylinder 5, the outer guide sleeve 4 is arranged at the outer end of the cylinder 5, two ends of the outer guide sleeve are respectively propped against the outer end face of the cylinder 5 and the steps of the stepped hole, the inner wall of the outer guide sleeve 4 is in sealing contact with the outer wall of the tool apron 3, the inner end of the cylinder 5 is coaxially provided with the inner guide sleeve 7, the inner guide sleeve 7 is propped against the inner end face of the cylinder 5 and is detachably connected with the inner end of the guide sleeve 12, the inner wall of the inner guide sleeve 7 is in sealing contact with the outer wall of the tool apron 3, a closed structure is formed through the outer guide sleeve 4 and the inner guide sleeve 7, and the limit of the movement of the piston is realized. Specifically, the outer periphery of the inner guide sleeve 7 is provided with an outwardly extending flange, and is connected with the guide rail sleeve 12 through the first bolt 14, or a clamping or threaded connection mode can be adopted.
In order to improve the sealing effect, the inner wall of the outer end of the stepped hole is provided with a first sealing ring 2, and the outer wall of the piston, the inner wall of the outer guide sleeve 4 and the inner wall of the inner guide sleeve 7 are provided with second sealing rings 6. And arranging annular grooves at corresponding positions, and installing the sealing ring into the annular grooves.
In the super-digging cutter provided by the specific embodiment of the invention, connecting pieces are arranged on two sides of the cutter 1, mounting holes for the cutter 1 to enter and exit and penetrate through two ends of the cutter holder 3 are formed in the cutter holder 3, part of the cutter 1 extends out of the outer end of the mounting holes, symmetrically arranged positioning grooves are formed in the inner wall of the mounting holes, the super-digging cutter further comprises a pressing block 20 and symmetrically arranged wedge blocks 19, when the super-digging cutter is mounted, part of the cutter 1 extends out of the mounting holes and is positioned in the mounting holes, the connecting pieces are positioned at positions corresponding to the positioning grooves, the wedge blocks 19 are mounted in the positioning grooves, the wedge blocks 19 are contacted with the connecting pieces, then the pressing block 20 is mounted, the upper end face of the pressing block 20 is detachably connected with the connecting pieces, specifically, the inclined faces of the two sides of the pressing block 20 are detachably connected with the wedge blocks 19 on the two sides of the pressing block 20 through a fifth bolt 21, specifically, when the cutter 1 is subjected to inward force, the pressing block 19 on the two sides of the pressing block can be pushed inwards, but cannot retract, the pressing block 20 is driven to squeeze the positioning grooves when the cutter 1 is subjected to outward force, the wedge blocks 20 are pressed, the positioning grooves cannot be pushed, the wedge blocks 19, the wedge blocks are pushed and the wedge blocks can not be forwards and can be directly connected in a special mode through the fastening mode or can be directly connected through the special mode, and can be directly connected through the mode.
The cutter 1 can be replaced according to the actual working condition, such as a double-blade hob, a tooth cutter or a tearing cutter. In order to protect the internal structure and prevent foreign matter from entering, the installation opening needs to be sealed, so that a cover plate needs to be arranged to seal the installation opening. The cover plates can be connected with the cutterhead 18 through bolts, or can be connected through a buckle or a chute, and the number and the connection mode of the cover plates can be adjusted according to the situation, which are all within the protection scope of the invention.
On the basis of the super-digging cutter provided by each specific embodiment, the guide ring 10 extending out of the inner end of the guide rail sleeve 12 is detachably arranged on the inner end surface of the cutter holder 3, the axially extending sliding groove is formed in the periphery of the guide ring 10, the first protection cover 8 for shielding the inner end surface and the outer wall of the cutter holder 3 is detachably arranged on the inner end surface of the guide rail sleeve 12, the axially extending guide key 9 is detachably arranged on the inner wall of the first protection cover 8, and the guide key 9 is arranged in the sliding groove and can axially move along the sliding groove. Further, a second protection cover 11 for sealing contact with the inner wall of the holder 3 may be detachably mounted on the first protection cover 8. Namely, the cutter holder 3 is wrapped up by arranging the first protective cover 8 and the second protective cover 11 at the part extending out of the inner end of the guide rail sleeve 12, so that external muddy water and sand are isolated from entering, and the excessive cutter cannot be retracted normally after extending out. Simultaneously, the guide ring 10 and the tool apron 3 synchronously move, in the telescoping process of the tool apron 3, the first protective cover 8 and the guide key 9 are connected with the guide rail sleeve 12 to be fixed, and the tool apron 3 and the guide ring 10 move, and the guide key 9 is positioned in the chute, so that circumferential rotation can not be generated, and only axial movement can be performed.
Specifically, the first protection cover 8 is connected with the guide rail sleeve 12 through the second bolt 15, the guide ring 10 is connected with the tool apron 3 through the third bolt 16, the first protection cover 8 is connected with the second protection cover 11 through the fourth bolt 17, the first protection cover 8 is connected with the guide key 9 through the sixth bolt 22, and other connection modes such as clamping connection or threaded connection can be adopted. A third sealing ring 13 may also be provided between the inner wall of the holder 3 and the second protective cap 11.
When the super-cutter is worn seriously or damaged, the cutter 1 needs to be replaced. The fourth bolt 17 is removed from the rear of the cutterhead 18, the second protective cover 11 is removed, then the fifth bolt 21, the pressing block 20 and the wedge 19 are sequentially removed along the cavity at the rear of the tool holder 3, and finally the tool 1 to be replaced is removed. When reinstallation is carried out, the operation is carried out according to the steps opposite to the disassembly, and the whole operation process is safe and convenient. Further disassembly can be performed, and the cylinder 5, the tool apron 3 and other parts can be replaced quickly and conveniently.
In addition to the above super-digging cutter, the specific embodiment of the present invention further provides a heading machine including the above super-digging cutter, and the structure of other parts of the heading machine is referred to the prior art, and will not be described herein.
The development machine and the super-digging cutter provided by the invention are described in detail. The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present invention and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the invention can be made without departing from the principles of the invention and these modifications and adaptations are intended to be within the scope of the invention as defined in the following claims.
Claims (5)
1. The utility model provides a super-digging cutter of development machine, its characterized in that includes hollow blade disc (18) and install in the inside guide rail sleeve (12) of both ends open-ended of blade disc (18), the outer end of guide rail sleeve (12) stretch out in the outer end of blade disc (18), be provided with blade holder (3) in the guide rail sleeve (12) coaxial, blade holder (3) can follow the extending direction of guide rail sleeve (12) is flexible, the outer end detachably of blade holder (3) installs cutter (1), guide rail sleeve (12) internally mounted has cylinder (5), the periphery at blade holder (3) middle part be provided with cylinder (5) inner wall sealing contact's protruding piston, cylinder (5) both ends are provided with the hydraulic fluid port that is used for hydraulic oil business turn over, blade disc (18) side is provided with the installing port that is used for cutter (1) business turn over;
The guide rail sleeve (12) is internally provided with a stepped hole, the diameter of the outer end of the stepped hole is smaller than the diameter of the inner end of the guide rail sleeve, the cylinder barrel (5) is mounted at the inner end of the stepped hole, the outer end of the cylinder barrel (5) is coaxially provided with an outer guide sleeve (4), two ends of the outer guide sleeve (4) are respectively propped against the outer end face of the cylinder barrel (5) and the step of the stepped hole, the inner wall of the outer guide sleeve (4) is in sealing contact with the outer wall of the tool apron (3), the inner end of the cylinder barrel (5) is coaxially provided with an inner guide sleeve (7), the inner guide sleeve (7) is propped against the inner end face of the cylinder barrel (5) and is detachably connected with the inner end of the guide rail sleeve (12), and the inner wall of the inner guide sleeve (7) is in sealing contact with the outer wall of the tool apron (3), and the inner wall of the outer end of the stepped hole is in sealing contact with the outer wall of the tool apron (3).
The inner wall of the outer end of the stepped hole is provided with a first sealing ring (2), and the outer wall of the piston, the inner wall of the outer guide sleeve (4) and the inner wall of the inner guide sleeve (7) are provided with second sealing rings (6);
A guide ring (10) extending out of the inner end of the guide rail sleeve (12) is detachably arranged on the inner end surface of the tool apron (3), an axially extending chute is arranged on the periphery of the guide ring (10), a first protection cover (8) for shielding the inner end surface and the outer wall of the tool apron (3) is detachably arranged on the inner end surface of the guide rail sleeve (12), an axially extending guide key (9) is detachably arranged on the inner wall of the first protection cover (8), and the guide key (9) is arranged in the chute and can axially move along the chute;
The first protective cover (8) is detachably provided with a second protective cover (11) which is used for being in sealing contact with the inner wall of the tool apron (3);
and the cover plate is detachably arranged at the mounting opening.
2. The super-digging cutter according to claim 1, wherein connecting pieces are arranged on two sides of the cutter (1), mounting holes for the cutter (1) to enter and exit and penetrate through two ends of the cutter holder (3) are formed in the cutter holder (3), the cutter (1) partially extends out of the outer ends of the mounting holes, positioning grooves are formed in the inner walls of the mounting holes, wedge blocks (19) in contact with the connecting pieces are arranged in the positioning grooves, and pressing blocks (20) detachably connected with the wedge blocks (19) and the connecting pieces are further included and used for fixing positions of the cutter (1).
3. The super-cutter according to claim 2, wherein the press block (20) is connected to the connector and the wedge (19) by bolts.
4. The super-cutter according to claim 1, characterized in that the cutter (1) is in particular a double-edged hob, a tooth or a tearing cutter.
5. A heading machine comprising a frame and an overexcavation blade mounted to the frame, characterized in that the overexcavation blade is embodied as defined in any one of claims 1 to 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811032607.2A CN108825258B (en) | 2018-09-05 | 2018-09-05 | Heading machine and super-digging cutter thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811032607.2A CN108825258B (en) | 2018-09-05 | 2018-09-05 | Heading machine and super-digging cutter thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108825258A CN108825258A (en) | 2018-11-16 |
| CN108825258B true CN108825258B (en) | 2024-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811032607.2A Active CN108825258B (en) | 2018-09-05 | 2018-09-05 | Heading machine and super-digging cutter thereof |
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| CN (1) | CN108825258B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109854268B (en) * | 2019-01-23 | 2024-03-15 | 中铁大桥科学研究院有限公司 | Push-out type super-excavation hob device of tunnel boring machine and hob adjusting method |
| CN110043276B (en) * | 2019-05-22 | 2024-04-23 | 中国铁建重工集团股份有限公司 | Tunnel boring machine, cutter head and hob blade holder protection structure |
| CN112593953B (en) * | 2020-12-15 | 2022-09-30 | 中国铁建重工集团股份有限公司 | Expanding excavation device for replacing cutter on cutter head and cutter replacing method |
| CN114294005B (en) * | 2021-12-28 | 2024-05-14 | 中铁工程装备集团有限公司 | Cutter device, tunneling machine, and cutter changing method |
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