CN209261572U - A kind of shield multi-knife-head hobboing cutter cutter ring - Google Patents
A kind of shield multi-knife-head hobboing cutter cutter ring Download PDFInfo
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- CN209261572U CN209261572U CN201821900284.XU CN201821900284U CN209261572U CN 209261572 U CN209261572 U CN 209261572U CN 201821900284 U CN201821900284 U CN 201821900284U CN 209261572 U CN209261572 U CN 209261572U
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- cutter
- head
- knife
- cutter ring
- ring body
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Abstract
A kind of shield multi-knife-head hobboing cutter cutter ring to effectively improve the driving speed of the very high ground consisting of hard rock of shield driving compactness, and reduces tool wear, avoids frequent tool changing.It is made of cutter ring body and cutter head, the cutter ring body is annular in shape, and mounting hole is arranged in blossom type on developed surface.The cutter head lower part is cylindrical body, and top is semiellipse body, and the lower part of each cutter head is pressed into mounting hole therewith at interference fit, cutter head build-in is mounted on cutter ring body.
Description
Technical field
The hobboing cutter that the utility model relates to use on shield-tunneling construction cutterhead, in particular to a kind of shield multi-knife-head hobboing cutter knife
Circle.
Background technique
During shield-tunneling construction, cutter head of shield machine fix a cutting tool whether adapt to driving stratum it is most important.Under normal circumstances,
Tearing cutter and scraper are configured on cutterhead in soft rock strata, double-edged hobbing cutter and scraper are configured in general ground consisting of hard rock, in hardness
Cutterhead configuration single-blade hob and scraper in higher lithostratigraphy.Due to the influence of cutterhead aperture opening ratio and number of cutters, general cutterhead
The sword spacing of front single-blade hob is 100mm, and cutting edge material is the medium carbon alloy steel of conditioned quenching, and edge hardness is generally 56
~58HRC.As shown in Figure 1, the hobboing cutter cutter ring on cutterhead acts directly on the rotation of shield driving cylinder thrust and cutterhead
It excavates on face, is advanced by the attrition crushing to rock.As shown in Figures 2 and 3, but in the driving extraordinary height of compactness
It is adjacent to squeeze during blade squeezes rock since compactness is very high between rock when granite of hardness etc. is similar to ground consisting of hard rock
Pressure surface distance is big, is difficult to generate attrition crushing to rock, blade only cuts rock face, between adjacent blade excavation face
Rock still remains.Since rock is not extruded broken between cutting slot, blade and rock contact area are excessive, and one hobboing cutter institute
The thrust of receiving causes blade to act on rock and presses since the requirement of cutter bearing bearing capacity (being usually no more than 250kn) limits
It is strong low, it is very small for high rigidity rock blade cutting output.When eventually leading to this stratum of shield driving, driving speed is slow, has
When can only achieve 1~3mm/min, and edge wear is serious, and tool changing is frequent, and shield-tunneling construction progress is slow, and construction cost is high.It is existing
This stratum is encountered during stage shield-tunneling construction, does not find very good solution measure also.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of shield multi-knife-head hobboing cutter cutter rings, to effectively improve
The driving speed of the very high ground consisting of hard rock of shield driving compactness, and tool wear is reduced, avoid frequent tool changing.
It is as follows that the utility model solves technical solution used by its technical problem:
A kind of shield of the utility model multi-knife-head hobboing cutter cutter ring, it is characterized in that: be made of cutter ring body and cutter head, it is described
Cutter ring body is annular in shape, and mounting hole is arranged in blossom type on developed surface；The cutter head lower part is cylindrical body, and top is half elliptic
The lower part of body, each cutter head is pressed into mounting hole therewith at interference fit, and cutter head build-in is mounted on cutter ring body.
The utility model has the beneficial effects that laying installation hard alloy columnar cutter head, drop in blossom type on hobboing cutter cutter ring
Spacing between low cutter head is squeezed and is cut to rock by multi-knife-head, it is very high to effectively improve shield driving compactness
The driving speed of ground consisting of hard rock, and tool wear is reduced, frequent tool changing is avoided, construction efficiency is greatly improved.
Detailed description of the invention
This specification includes following eight width attached drawing:
Fig. 1 is that existing single-blade hob cutter ring squeezes catalase schematic diagram；
Fig. 2 is that the existing single-blade hob rock good to compactness squeezes not broken schematic diagram；
Fig. 3 is that the existing single-blade hob rock good to compactness squeezes not broken schematic diagram；
Fig. 4 is a kind of skiagraph of shield multi-knife-head hobboing cutter cutter ring of the utility model；
Fig. 5 is a kind of cross-sectional view of shield multi-knife-head hobboing cutter cutter ring of the utility model；
Fig. 6 is the expanded view of cutter ring body in a kind of shield multi-knife-head hobboing cutter cutter ring of the utility model；
Fig. 7 is the structural schematic diagram of cutter head in a kind of shield multi-knife-head hobboing cutter cutter ring of the utility model；
Fig. 8 is that a kind of shield multi-knife-head hobboing cutter cutter ring of the utility model squeezes catalase schematic diagram.
Component and corresponding label are shown in figure: rock 10 squeezes crackle 11, cutter head 20, hobboing cutter cutter ring 21, cutter ring body
22, mounting hole 23.
Specific embodiment
The present invention will be further described with reference to the accompanying drawings and examples.
Referring to Fig.1, existing shield cutter arranges the wide 19.8mm of the general blade of single-blade hob, and adjacent edge spacing is 100mm.
With the rotation of cutterhead, shield is pushed ahead with certain speed, and hobboing cutter cutter ring 21 is squeezed into rock 10 with certain pile penetration, rolling
Knife blade periphery rock is squeezed by hobboing cutter cutter ring 21, is formed and is squeezed crackle 11, and then catalase is fallen.One hobboing cutter blade rail
Trace is using cutter head center as the center of circle, and hobboing cutter blade to cutter head center is radius, while using cutterhead pile penetration as the spiral of screw pitch
Line.Rock between hobboing cutter blade sword spacing is all attrition crushing.Since hobboing cutter is evenly arranged on cutterhead, hobboing cutter blade
It is not to be acted on simultaneously using cutter head center as on the same diameter line of centre point.
As shown in attached drawing 2, Fig. 3, when the hobboing cutter driving extraordinary lithosphere of compactness, just start to tunnel plane lithosphere
When, single-blade hob squeezes scar, and since pressure of the blade to rock 10 is big, there is a crackle slightly on hobboing cutter blade periphery, but due to
Compactness is good, and crack growth, cannot be by the catalase between hobboing cutter blade apart from small.As hobboing cutter blade is further cut into
In rock, the Rock Cutting slot of a lot of is formed on rock, one becomes larger the contact area of hobboing cutter blade and rock, due to list
Hobboing cutter (17 inches) bearing can only be born 250Kn, hobboing cutter blade becomes smaller to the pressure of rock 10, and the compression strength of rock 10 is again
Height, hobboing cutter blade cannot effectively cut rock, cause shield driving speed slow, can only achieve 1~3mm/min sometimes, to make
It is serious at hob abrasion, the problems such as tool changing is frequent.
Referring to 4 and Fig. 5, a kind of shield of the utility model is with multi-knife-head hobboing cutter cutter ring by 20 structure of cutter ring body 22 and cutter head
At.Referring to Fig. 6, the cutter ring body 22 is annular in shape, and mounting hole 23 is arranged in blossom type on developed surface.Referring to Fig. 7, the cutter head
20 lower parts are cylindrical body, and top is semiellipse body.Referring to Fig. 5, the lower part of each cutter head 20 is pressed into mounting hole 23 and shape therewith
At interference fit, 20 build-in of cutter head is mounted on cutter ring body 22.
Referring to 4 and Fig. 5,8 row's mounting holes 23 are arranged along cutterhead direction of rotation on the cutter ring body 22, along hobboing cutter direction of rotation
28 mounting holes 23 are set in every arrangement, totally 224 mounting holes 23.The cutter ring body 22 is made of alloy steel material, quenched quenching
Hardness number is 45HRC.20 lower diameter of cutter head is 15mm, and the depth of insertion cutter ring body 22 is 30mm, and top is higher by cutter ring
22 surface 15mm of body.The cutter head 20 is made of tungsten-cobalt hard alloy, hardness number 75HRC.
It is single on hobboing cutter cutter ring while having 4 when all installing multi-knife-head hobboing cutter driving on shield cutter referring to Fig. 8
A cutter head 20 (cutterhead pile penetration is less than 5.5mm/r) or 8 cutter heads 20 (cutterhead pile penetration is greater than or equal to 5.5mm/r) act on
On rock face, the cutter head centers of adjacent tool tips 20 distance is 28.5mm, and cutter head spacing is small, adjacent tool tips 20 simultaneously to rock 10 into
Row squeezes, and for rock 10 without deformation space, this results in adjacent tool tips 20 to easily cause the attrition crushing of rock 10.Cutter head 20 is in
Blossom type arrangement, 8 row's cutter heads 20 are along cutterhead rotary course, excavation face all standing within the scope of cutter diameter.If cutter head 20
The attrition crushing not any to rock 10, can only cut broken, and the track on cutterhead in a circumference is through multiple cutter heads more than 20
Secondary cutting also can accomplish all standing to the trajectory line on cutterhead in a circumference.
When being tunneled using the utility model multi-knife-head hobboing cutter, if closely spaced multi-knife-head can be to the rock for causing compactness good
Stone carries out attrition crushing, and cutterhead pile penetration should control within 10mm/r.If closely spaced multi-knife-head can only be by squeezing into
Row cutting, when cannot be crushed, cutterhead pile penetration is theoretically no more than 3mm/r.To reduce cutter head impact, reducing cutterhead injection
Degree reduces tool wear, improves shield driving progress, should improve cutterhead revolving speed as far as possible.
The above is a kind of some principles of shield multi-knife-head hobboing cutter cutter ring of the utility model that explain through diagrams, and
It is non-be the utility model is confined to shown in and the specific structure and the scope of application in, therefore all may be utilized
It is corresponding modification and equivalent, belong to the applied the scope of the patents of the utility model.
Claims (5)
1. a kind of shield multi-knife-head hobboing cutter cutter ring, it is characterized in that: being made of cutter ring body (22) and cutter head (20), the cutter ring body
(22) annularly, in blossom type setting mounting hole (23) on developed surface；Cutter head (20) lower part is cylindrical body, and top is half
Ellipsoid body, lower part indentation mounting hole (23) of each cutter head (20) is interior to be interference fitted with formation therewith, and cutter head (20) build-in is pacified
On cutter ring body (22).
2. a kind of shield multi-knife-head hobboing cutter cutter ring as described in claim 1, it is characterized in that: along knife on the cutter ring body (22)
8 row's mounting holes (23) are arranged in disc spins direction, and along hobboing cutter direction of rotation, 28 mounting holes (23) are set in every arrangement, totally 224 installations
Hole (23).
3. a kind of shield multi-knife-head hobboing cutter cutter ring as claimed in claim 2, it is characterized in that: the cutter ring body (22) is by alloy
Steel material is made, and quenched quenching hardness value is 45HRC.
4. a kind of shield multi-knife-head hobboing cutter cutter ring as described in claim 1, it is characterized in that: the cutter head (20) lower diameter
For 15mm, the depth for being embedded in cutter ring body (22) is 30mm, and top is higher by cutter ring body (22) surface 15mm.
5. a kind of shield multi-knife-head hobboing cutter cutter ring as claimed in claim 4, it is characterized in that: the cutter head (20) is hard by tungsten-cobalt
Matter alloy is made, hardness number 75HRC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821900284.XU CN209261572U (en) | 2018-11-18 | 2018-11-18 | A kind of shield multi-knife-head hobboing cutter cutter ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821900284.XU CN209261572U (en) | 2018-11-18 | 2018-11-18 | A kind of shield multi-knife-head hobboing cutter cutter ring |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209261572U true CN209261572U (en) | 2019-08-16 |
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ID=67555025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821900284.XU Active CN209261572U (en) | 2018-11-18 | 2018-11-18 | A kind of shield multi-knife-head hobboing cutter cutter ring |
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| CN (1) | CN209261572U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109339807A (en) * | 2018-11-18 | 2019-02-15 | 中国电建集团铁路建设有限公司 | A kind of shield multi-knife-head hobboing cutter cutter ring |
-
2018
- 2018-11-18 CN CN201821900284.XU patent/CN209261572U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109339807A (en) * | 2018-11-18 | 2019-02-15 | 中国电建集团铁路建设有限公司 | A kind of shield multi-knife-head hobboing cutter cutter ring |
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