CN110424976A - Multiple camber shield cutter - Google Patents
Multiple camber shield cutter Download PDFInfo
- Publication number
- CN110424976A CN110424976A CN201910695819.7A CN201910695819A CN110424976A CN 110424976 A CN110424976 A CN 110424976A CN 201910695819 A CN201910695819 A CN 201910695819A CN 110424976 A CN110424976 A CN 110424976A
- Authority
- CN
- China
- Prior art keywords
- knife
- fish tail
- curved surface
- center
- cutter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 241000251468 Actinopterygii Species 0.000 claims abstract description 36
- 238000007790 scraping Methods 0.000 claims description 8
- 239000002689 soil Substances 0.000 abstract description 17
- 238000010276 construction Methods 0.000 abstract description 10
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 238000005299 abrasion Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000002708 enhancing effect Effects 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000006467 substitution reaction Methods 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
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)
- Processing Of Meat And Fish (AREA)
Abstract
The invention discloses a kind of multiple camber shield cutters, including cutterhead body and center fish tail knife, the center fish tail knife is located at the center of cutterhead body, it is connected between cutterhead body and center fish tail knife by a plurality of curved surface knife beam, a plurality of curved surface knife beam is evenly arranged in a ring in the annular region between cutterhead body and center fish tail knife using center fish tail knife as the center of circle；Curved surface knife Liang Xiangyu center fish tail knife and cutterhead body cut surface arch upward to form multiple camber on one side towards identical.Shield knife beam of the present invention is multiple camber structure, make the cutter envelope being mounted above in multiple camber shape, the face soil body is divided into different stress state regions, realize that knife cutting ability matches with formation cut difficulty, achieve the purpose that cutterhead equivalent is worn, the soil body is avoided to repeat broken and cutterhead friction phenomenon generation, the cutterhead service life can be extended and improves drivage efficiency, replacement cutter number is reduced, construction cost is saved.
Description
Technical field
The present invention relates to ground driving and tunnel construction field more particularly to a kind of multiple camber multiple camber shield knives
Disk.
Background technique
Currently, urban rail transit in China construction is faced with unprecedented climax, with China's Development of China's Urbanization
Accelerated development, Construction of Urban Rail Traffic environment is increasingly complicated, and shield construction has become the preferred option of urban rail transit construction
And main stream approach.Be frequently encountered sand-pebble layer when shield-tunneling construction, sand-pebble layer have it is loose easily collapse, permeability is high,
Cobble can be with the features such as hardness high abrasive is strong.When existing shield cutter tunnels in sand-pebble layer, it is fast that there are tool wears
And the problems such as eccentric wear, once occur tool wear it is serious after once need personnel enter soil pressure storehouse replacement cutter, in addition to costly
It also will affect construction speed.Difficulty phase is cut everywhere since the face soil body is all in semi-infinite body state for plane cutterhead
Together, soil cutting difficulty and knife cutting ability mismatch, and will lead to cutter head center and cut slow edge cutting fastly, the edge soil body
It can occur to repeat to be crushed to lead to problems such as the slow tool wear of driving speed serious.
Summary of the invention
For above-mentioned shortcoming and defect in the prior art, the purpose of the present invention is to provide a kind of multistage of eccentric abrasion prevention songs
Face shield cutter.
The purpose of the present invention is what is be achieved through the following technical solutions:
A kind of multiple camber shield cutter, including cutterhead body and center fish tail knife, the center fish tail knife are located at cutterhead
The center of main body is connected between cutterhead body and center fish tail knife by a plurality of curved surface knife beam, and a plurality of curved surface knife beam is with center fish
Tail knife is that the center of circle is evenly arranged in a ring in the annular region between cutterhead body and center fish tail knife；The center curved surface knife Liang Xiangyu fish
Tail knife and cutterhead body cut surface arch upward to form curved surface on one side towards identical.
Preferably, be distributed with a column wedge shape tearing cutter along its trend on the arch face of curved surface knife beam, adjacent wedge shape tearing cutter it
Between spacing be sequentially reduced from one end that curved surface knife beam is connect with center fish tail knife to the other end.
Preferably, further include round crossbeam, the circle crossbeam is located in the annular region, the round crossbeam with
Bridging has muti-piece curved surface fan-shaped panel between cutterhead body, is uniformly distributed in a ring between muti-piece sector curved slab.
Preferably, a column scraper, the scraper of two sides and the wedge shape of arch face are each provided in the two sides of the curved surface knife beam
Tearing cutter corresponds.
Preferably, the fan-shaped curved slab is bent in the same direction with curved surface knife beam, fan-shaped curved slab plate face biggish one
End is connect with cutterhead body, and the other end is connect with ring wale；Wear-resisting wedge block is distributed on the curved surface fanning strip.
Preferably, the wear-resisting wedge block on smaller one end of wear-resisting wedge block on fan-shaped larger one end of curved slab plate face
It is small.
Preferably, multiple hobboing cutters, the court of the hobboing cutter are tiltedly installed at the edge of fan-shaped larger one end of curved slab plate face
It is tilted on the outside of to cutterhead body.
Preferably, the center fish tail knife includes tool apron, the triangle point sword being vertically arranged on tool apron, in triangle point
The two sides of sword are respectively arranged with a column scraper, and scraper is bonded the sword plate setting of triangle point sword.
Preferably, the cutter groove of accommodating hobboing cutter is provided on the fan-shaped curved slab, the prominent cutter groove of the blade of hobboing cutter is inclined along hobboing cutter
Tilted direction is machined with a cover board in cutter groove, is provided with wear-resisting wedge block on the outside of the cover board.
Preferably, the scraper includes fixed block and the scraping edge that is shaped on fixed block；Curved surface knife beam two sides scraper
Scraping edge have be directed away from the inclined blade surface in curved surface knife beam direction；The scraping edge of triangle point sword two sides scraper, which has, to be directed away from
The inclined blade surface in triangle point sword direction.
Compared with prior art, the embodiment of the present invention has at least the following advantages:
(1) shield knife beam is multiple camber structure, makes the cutter envelope being mounted above in multiple camber shape, by area
The face soil body is divided into different stress state regions, realizes that knife cutting ability matches with formation cut difficulty, reaches cutterhead etc.
The purpose for measuring abrasion avoids the soil body from repeating broken and cutterhead friction phenomenon generation, can extend the cutterhead service life and improve driving
Efficiency reduces replacement cutter number, saves construction cost.
(2) arrangement of the cutter on knife beam is heterogeneous, big in the marginal zone layout density of serious wear, in
Heart district layout density is small, further mitigates cutterhead eccentric wear.
(3) multiple camber structure cutterhead and formation-engaging surfaces product are bigger, act on the power on unit area with regard to smaller, favorably
In the abrasion for slowing down cutterhead, extend the service life of cutterhead.
Detailed description of the invention
Fig. 1 is the schematic illustration of multiple camber shield cutter eccentric abrasion prevention of the present invention；
Fig. 2 is the schematic perspective view of multiple camber shield cutter of the present invention；
Fig. 3 is the main view of multiple camber shield cutter structure of the present invention；
Fig. 4 be Fig. 3 in A-A to the schematic diagram of the section structure；
Fig. 5 is the structural schematic diagram of the center fish tail knife of multiple camber shield cutter of the present invention；
Fig. 6 is the structural schematic diagram of the curved surface knife beam of multiple camber shield cutter of the present invention；
Fig. 7 is the structural schematic diagram of the fan-shaped curved slab of multiple camber shield cutter of the present invention.
In figure, 1, cutterhead body；2, curved surface knife beam；3, center fish tail knife；4, ring wale；5, fan-shaped curved slab；6, wedge
Shape tearing cutter；7, scraper；8, hobboing cutter；9, wear-resisting wedge block；10, triangle point sword；11, cover board；.
Specific embodiment
Below with reference to embodiment and its attached drawing, the invention will be further described, following embodiment be it is descriptive, no
It is restrictive, this does not limit the scope of protection of the present invention.
As shown in Figure 3 and Figure 4, a kind of multiple camber shield cutter, including cutterhead body 1 and center fish tail knife 3, center fish
Tail knife 3 is located at the center of cutterhead body 1, is connected between cutterhead body 1 and the center fish tail knife 3 at center by a plurality of curved surface knife beam 2
It connects, a plurality of curved surface knife beam 2 is that the center of circle is evenly arranged on the ring between cutterhead body 1 and center fish tail knife 3 in a ring with center fish tail knife 3
In shape region；Curved surface knife beam 2 arches upward to form multistage on one side to center fish tail knife 3 and 1 cut surface of cutterhead body towards identical
Curved surface.
As shown in Figures 2 and 3, a column wedge shape tearing cutter 6, adjacent wedge is distributed with along its trend on the arch face of curved surface knife beam 2
Spacing between shape tearing cutter 6 is sequentially reduced from one end that curved surface knife beam 2 is connect with center fish tail knife 3 to the other end.
As shown in Fig. 2, further including circle in order to reduce cutterhead aperture opening ratio while in order to increase effective cut surface of shield cutter
Shape crossbeam, round crossbeam are located in annular region, and bridging has muti-piece curved surface fan-shaped surface between round crossbeam and cutterhead body 1
Plate is uniformly distributed in a ring between muti-piece sector curved slab 5.
As shown in fig. 6, being each provided with a column scraper 7, the scraper 7 of two sides and the wedge of arch face in the two sides of curved surface knife beam 2
Shape tearing cutter 6 corresponds.
As shown in Figure 2 and Figure 7, fan-shaped curved slab 5 is bent in the same direction with curved surface knife beam 2, fan-shaped 5 plate face of curved slab compared with
Big one end is connect with cutterhead body 1, and the other end is connect with ring wale 4；Wear-resisting wedge block is distributed on curved surface fanning strip
9。
The wear-resisting wedge block 9 on the smaller one end of wear-resisting wedge block 9 on the larger one end of fan-shaped 5 plate face of curved slab is small.
Be tiltedly installed with multiple hobboing cutters 8 at the edge of the larger one end of fan-shaped 5 plate face of curved slab, hobboing cutter 8 towards cutterhead master
It is tilted on the outside of body 1.
As shown in Figure 2 and Figure 5, center fish tail knife 3 includes tool apron, the triangle point sword 10, In being vertically arranged on tool apron
The two sides of triangle point sword 10 are respectively arranged with a column scraper 7, and scraper 7 is bonded the sword plate setting of triangle point sword 10.
The cutter groove of accommodating hobboing cutter 8, the prominent cutter groove of the blade of hobboing cutter 8, along 8 inclined direction of hobboing cutter are provided on fan-shaped curved slab 5
It is machined with a cover board 11 in cutter groove, wear-resisting wedge block 9 is provided on the outside of cover board 11.
Scraper 7 includes fixed block and the scraping edge being shaped on fixed block；2 two sides scraper 7 of curved surface knife beam scrapes cutlery
It is directed away from the 2 inclined blade surface in direction of curved surface knife beam；The scraping edge of 10 two sides scraper 7 of triangle point sword, which has, is directed away from triangle
The 10 inclined blade surface in direction of shape point sword.
Multiple camber shield cutter in the present embodiment can effectively avoid the principle of eccentric wear as follows:
As shown in Figure 1, multiple camber shield cutter is by face, (face is also known as the face Zhang, is one in tunnel construction
A term.Excavate tunnel, as mined, the working face constantly pushed ahead in mining or Tunnel Engineering) soil body state it is symmetrical
Ground is divided into three regions: region I, and the soil body is in unlimited body state, and cutting difficulty is maximum；Region II, the soil body are in semi-infinite body
State, cutting difficulty are larger；Region III, the soil body are in free surface state, and cutting difficulty is minimum.Cutterhead is in the circumgyration incision soil body
When, radius is bigger, and linear velocity is bigger, and cutting power is also stronger.For multiple camber shield cutter, edge soil cutting
Difficulty is maximum, and cutting power of the cutterhead at this is most strong, and soil cutting difficulty is minimum at center, but cutterhead linear velocity is also most
Small, soil cutting difficulty matches with knife cutting ability, and which achieves the abrasions of cutterhead equivalent, can be to avoid cutter eccentric wear.
As shown in Fig. 2, radial on cutterhead body 1 be evenly arranged 6 curved surface knife beams 2, pass through in center
Center fish tail knife 3 connects each curved surface knife beam 2.For increase curved surface knife beam 2 intensity, between cutterhead body 1 and center fish tail knife
It is provided with ring wale 4, and curved surface knife beam 2 is connect with ring wale 4.To reduce cutterhead aperture opening ratio, in two curved surface knives
Curved surface fan-shaped panel is provided between beam 2, one end of curved surface fan-shaped panel is connect with cutterhead body 1, the other end and ring wale 4
Connection.Total 6 wedge-shaped tearing cutters 6 of a column are fitted in the arch face face of every curved surface knife beam 2, for enhancing edge wedge shape tearing
The spacing of the wearability of knife 6, wedge-shaped tearing cutter 6 is smaller and smaller from center to edge.It is all installed in the two sides of every curved surface knife beam 2
Have a scraper 7, the spacing of scraper 7 be also it is smaller and smaller from center to edge, be consistent with wedge-shaped tearing cutter 6.Further to add
The cutting power at strong shield cutter edge, is equipped with the hobboing cutter 8 raised outside two tools on curved surface fan-shaped panel.It is fan-shaped for enhancing curved surface
The wearability of panel studs with wear-resisting voussoir on surface.For the center fish tail knife 3 for protecting center, the tool apron of fish tail knife 3 at center
On triangle point sword 10 and the scraper 7 positioned at 10 blade surface two sides of triangle point sword are installed.It is mounted on all on curved surface knife beam 2
Cutter (wedge-shaped tearing cutter 6 and the scraper 7 of two sides) ultimately forms knife disc tool envelope as shown in Figure 1, final to realize
The matching of soil cutting difficulty and knife cutting ability achievees the purpose that cutterhead equivalent is worn.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by anyone skilled in the art,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of claims
Subject to enclosing.
Claims (10)
1. a kind of multiple camber shield cutter, including cutterhead body (1) and center fish tail knife (3), center fish tail knife (3) position
In the center of cutterhead body (1), which is characterized in that pass through a plurality of curved surface knife beam between cutterhead body (1) and center fish tail knife (3)
(2) it connects, a plurality of curved surface knife beam (2) is that the center of circle is evenly arranged on cutterhead body (1) and center fish tail in a ring with center fish tail knife (3)
In annular region between knife (3)；Curved surface knife beam (2) to center fish tail knife (3) and cutterhead body (1) cut surface towards identical
Arch upward to form multiple camber on one side.
2. multiple camber shield cutter according to claim 1, which is characterized in that on the arch face of multiple camber knife beam (2)
A column wedge shape tearing cutter (6) is distributed with along its trend, and the spacing between adjacent wedge shape tearing cutter (6) is from multiple camber knife beam (2)
The one end connecting with center fish tail knife (3) is sequentially reduced to the other end.
3. multiple camber shield cutter according to claim 1, which is characterized in that further include round crossbeam, the circle
Crossbeam is located in the annular region, and bridging has muti-piece curved surface fan-shaped panel between the round crossbeam and cutterhead body (1),
It is uniformly distributed in a ring between muti-piece sector curved slab (5).
4. multiple camber shield cutter according to claim 2, which is characterized in that in the two sides of the curved surface knife beam (2)
Face is each provided with a column scraper (7), and the scraper (7) of two sides and the wedge-shaped tearing cutter (6) of arch face correspond.
5. multiple camber shield cutter according to claim 3, which is characterized in that the sector curved slab (5) and multistage
Curved surface knife beam (2) is bent in the same direction, and the biggish one end of fan-shaped curved slab (5) plate face is connect with cutterhead body (1), the other end
It is connect with ring wale (4)；Wear-resisting wedge block (9) are distributed on the curved surface fanning strip.
6. multiple camber shield cutter according to claim 5, which is characterized in that fan-shaped curved slab (5) plate face larger one
The wear-resisting wedge block (9) on wear-resisting wedge block (9) smaller one end on end is small.
7. multiple camber shield cutter according to claim 5 or 6, which is characterized in that fan-shaped curved slab (5) plate face compared with
The edge of big one end is tiltedly installed with multiple hobboing cutters (8), and the hobboing cutter (8) tilts towards cutterhead body (1) outside.
8. multiple camber shield cutter according to claim 4, which is characterized in that the center fish tail knife (3) includes knife
Seat, the triangle point sword (10) being vertically arranged on tool apron are respectively arranged with a column scraper in the two sides of triangle point sword (10)
(7), the sword plate setting of scraper (7) fitting triangle point sword (10).
9. multiple camber shield cutter according to claim 7, which is characterized in that be provided on the sector curved slab (5)
The cutter groove of hobboing cutter (8) is accommodated, the prominent cutter groove of the blade of hobboing cutter (8), inclined direction is machined with a cover board in cutter groove along hobboing cutter (8)
(11)；Wear-resisting wedge block (9) are provided on the outside of the cover board (11).
10. multiple camber shield cutter according to claim 8, which is characterized in that the scraper (7) include fixed block and
The scraping edge being shaped on fixed block；The scraping edge of curved surface knife beam (2) two sides scraper (7), which has, is directed away from curved surface knife beam (2)
The inclined blade surface in direction；The scraping edge of triangle point sword (10) two sides scraper (7), which has, is directed away from triangle point sword (10) direction
Inclined blade surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910695819.7A CN110424976B (en) | 2019-07-30 | 2019-07-30 | Multistage curved surface shield cutter head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910695819.7A CN110424976B (en) | 2019-07-30 | 2019-07-30 | Multistage curved surface shield cutter head |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110424976A true CN110424976A (en) | 2019-11-08 |
| CN110424976B CN110424976B (en) | 2024-04-16 |
Family
ID=68411367
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910695819.7A Active CN110424976B (en) | 2019-07-30 | 2019-07-30 | Multistage curved surface shield cutter head |
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| CN (1) | CN110424976B (en) |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN110424976B (en) | 2024-04-16 |
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