CN112065417B - Center-protruded anti-caking cutter head - Google Patents
Center-protruded anti-caking cutter head Download PDFInfo
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- CN112065417B CN112065417B CN202010738026.1A CN202010738026A CN112065417B CN 112065417 B CN112065417 B CN 112065417B CN 202010738026 A CN202010738026 A CN 202010738026A CN 112065417 B CN112065417 B CN 112065417B
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- cutter head
- cutter
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- caking
- center
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- 230000000694 effects Effects 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 230000015572 biosynthetic process Effects 0.000 abstract description 9
- 239000002131 composite material Substances 0.000 abstract description 5
- 239000002689 soil Substances 0.000 description 27
- 239000002002 slurry Substances 0.000 description 10
- 238000009412 basement excavation Methods 0.000 description 4
- 238000007599 discharging Methods 0.000 description 4
- 230000006872 improvement Effects 0.000 description 4
- 230000005641 tunneling Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000002893 slag Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008674 spewing Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- E21D9/06—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
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses a cutter head with a protruded center for preventing cake formation, which belongs to the field of shield machines, can solve the problem that a shield machine forms a mud cake when passing through a composite stratum, and is simpler and easier to implement compared with the existing solution; the middle part of the cutter head is provided with a plurality of mounting holes for mounting cutters, and the mounting holes are arrayed around the circumference of the protruding points.
Description
Technical Field
The invention belongs to the field of shield tunneling machines, and particularly relates to a cutter head with a protruded center and capable of preventing cake formation.
Background
The statements herein merely provide background information related to the present disclosure and may not necessarily constitute prior art.
The common composite stratum penetrated by the tunnel is mostly mudstone, argillaceous siltstone and argillaceous sandstone. The problem of mud cake formation by a cutter head is often encountered when the shield machine is driven in the stratum. The reasons for the mud cake of the cutter head are as follows: the opening rate of the center of the cutter head is smaller, the improvement of the muck is not in place, the water adding amount at the center of the bracket of the cutter head is insufficient, the thrust is large, the crushing rate of pebbles by the cutter head and the cutter is larger, the soil pressure in the soil bin is larger, and soil bodies cut by the cutter cannot smoothly enter the soil bin through the center of the cutter head. Once the treatment is improper, the occurrence of the mud cake can have great influence on the tunneling of the whole shield tunnel. Generally, the damage of the mud cake of the shield machine cutter mainly comprises the following points: after the cutter head of the shield machine is subjected to mud cake formation, the tunneling speed is slow, the torque of the cutter head and the total thrust are increased, the temperature of slag is increased, the improvement of slag soil is difficult, more slag is discharged, the cutter head is clamped, and the spewing of the outlet of a screw machine is easily caused, so that partial or even all cutters are eccentric if the treatment is not carried out in time. Even cause the problem that the shield machine is blocked to delay the construction period and serious disasters such as surface subsidence and the like.
At present, the mode of improving and increasing the opening rate of the center panel of the cutter head by using dregs is generally adopted. The muck improvement is mainly to improve the soil body of the tunnel face in a chemical mode to change the characteristics of the soil body of the tunnel face and reduce the viscosity of the excavated soil body so as to achieve the effect of preventing mud cakes; the opening rate of the center panel of the cutter head is increased by properly increasing the opening rate of the center panel of the cutter head in a physical mechanical mode, the bracket of the cutter head is modified, hard bending and dead corners are reduced, the muck can smoothly enter a soil bin, and the bracket works together with a driving stirring rod and a driven stirring rod along with the rotation of the cutter head, so that the workability of the muck is changed. In addition, the optimization of the outer cutter barrel and the additional arrangement of the central flushing device is also a solution.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the cutter head with the center protruding and caking prevention, the device can solve the problem that the shield machine cakes when penetrating through a composite stratum, and is simpler and easier to implement compared with the existing solution.
In order to achieve the purpose, the invention is realized by the following technical scheme:
in a first aspect, the invention provides a cutter head with a center protruding and anti-caking function, which comprises a cutter head body, wherein the cutter head body comprises a middle part and a peripheral part positioned on the periphery of the middle part, the middle part gradually protrudes from the outer side to the inner side to one side of the cutter head body, and a protruding point is formed at the geometric center of the cutter head body; the middle part of the cutter head is provided with a plurality of mounting holes for mounting cutters, and the mounting holes are arrayed around the circumference of the protruding points.
In a second aspect, the technical scheme of the invention also provides a cutter head with a protruded center for preventing cake forming, which comprises a disk-shaped cutter head body and a plurality of cutters arranged on the cutter head body; the plurality of cutters are in a multi-circle circular array, and the heights of the cutters gradually rise from the outer circle to the inner circle.
In a third aspect, the invention further provides a centrally protruding anti-caking cutter disc, which comprises a disc-shaped first cutter disc and an annular second cutter disc, wherein the first cutter disc is arranged in the second cutter disc, the first cutter disc and the second cutter disc are connected by a connector, and when the cutter disc integrally rotates, the first cutter disc and the second cutter disc are positioned on different planes.
The specific principle of the invention is realized by
The technical scheme of the invention has the following beneficial effects:
1) In the invention, three implementation modes are provided for the protrusion of the central panel, so that the selection can be performed according to the actual situation in the engineering, and the mud cake phenomenon in the actual shield engineering can be better prevented.
2) In the three schemes provided by the invention, each scheme has good flexibility, and can select proper parameters according to the requirements of actual engineering and determine the protruding degree of the central cutter head according to different stratums.
3) In the three schemes provided by the invention, the protrusion of the center panel of the cutter head of the shield machine can be realized to a certain extent, so that the phenomenon of mud cake formation when the shield machine tunnels in a composite stratum can be well prevented.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
Figure 1 is a schematic cross-sectional view of a cutter head in embodiment 1 of the invention,
figure 2 is a cross-sectional view of a cutter head in embodiment 2 of the invention,
fig. 3 is a schematic sectional view of a cutter head in embodiment 3 of the present invention.
In the figure: 11. a first cutter head body; 12. a first soil bin; 13. a first cutter; 21. a second cutter head main body; 22. a second soil bin; 23. mounting holes; 24. an outer ring cutter; 25. a middle ring cutter; 26. an inner ring cutter; 31. an outer ring cutter head; 32. a third soil bin; 33. a connector; 34. a third cutter; 35. a central cutter head.
The spacing or dimensions between each other are exaggerated to show the location of the various parts, and the illustration is for illustrative purposes only.
Detailed Description
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an", and/or "the" are intended to include the plural forms as well, unless the invention expressly state otherwise, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof;
for convenience of description, the words "up", "down", "left" and "right" in the present invention, if any, merely indicate correspondence with up, down, left and right directions of the drawings themselves, and do not limit the structure, but merely facilitate the description of the invention and simplify the description, rather than indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.
Term interpretation section: the terms "mounted," "connected," "fixed," and the like in the present invention are to be understood in a broad sense, and for example, the terms "mounted," "connected," and "fixed" may be fixed, detachable, or integrated; the two components can be connected mechanically, electrically, directly or indirectly through an intermediate medium, or connected internally or in an interaction relationship, and the specific meaning of the terms in the present invention can be understood by those skilled in the art according to specific situations.
As introduced by the background technology, aiming at the defects in the prior art, the invention aims to provide the cutter head with the center protruding anti-caking function, the device can solve the problem that the shield machine cakes when passing through the composite stratum, and is simpler and easier compared with the existing solution.
Example 1
In a typical implementation mode of the present invention, as shown in fig. 1, in example 1, a centrally protruding anti-caking cutter head is disclosed, which is characterized by comprising a first cutter head body 11, wherein the first cutter head body 11 comprises a middle portion and a peripheral portion located at the periphery of the middle portion, the middle portion gradually protrudes from the outer side to the inner side to one side of the cutter head body, and a protruding point is formed at the geometric center of the cutter head body; the intermediate portion of the cutterhead is provided with a plurality of mounting holes 23 for mounting cutters, the mounting holes 23 being circumferentially arrayed about the projected points.
The middle part of the first cutterhead body 11, namely the center of the cutterhead, is provided with a panel which is protruded, and the mode needs to be designed correspondingly for specific projects when the cutterhead is designed. And the first cutter 13 arranged on the first cutter head body 11 can be a cutter on a cutter head of a normal shield machine.
In this embodiment, the outer edge of the cutter head body is circular.
It can be understood that the cutterhead in the present embodiment includes a first soil bin 12 in addition to the first cutterhead body 11, and the first soil bin 12 is provided at the rear side of the first cutterhead body 11.
The components forming the whole cutter head also comprise a slurry inlet pipeline and a slurry discharge pipeline, and the outlet of the slurry inlet pipeline is communicated with the soil bin; the slurry discharging inlet of the slurry discharging pipeline is communicated with the soil bin.
The direction of the middle part of the first cutter head body 11 is perpendicular to the peripheral part, and it can be understood that, referring to fig. 1, the part of the middle part of the present embodiment which gradually protrudes from the outer side to the inner side to one side of the cutter head body is in a straight cone shape, and rotates around the protruding point, that is, the vertex of the protruding part, when rotating.
This embodiment is when specifically using, and the disclosed blade disc of this embodiment is installed behind the shield structure machine, when rotatory stage property that drives creeps into, because the front end of cutter is not located a plane, in the front side of shield structure machine, except along blade disc rotation axis to the centrifugal force at blade disc edge, the trend of motion by the blade disc body to the soil storehouse that still exists can effectively break away from the soil material of depending on at the blade disc, avoids forming the mud cake.
It should be clear that the front of the shield machine is in the same direction as the heading direction of the shield machine.
Besides the cutterhead described in this embodiment, the shield machine also includes various shields which can temporarily support excavated but not yet lined tunnel sections, and each shield is also used to bear the pressure of the surrounding soil layer. Under the shield of each shield body, the operations of excavation, soil discharge, lining and the like of the shield machine can be smoothly carried out.
Compared with the excavation surface, the cutter head of the invention has the advantages that the cutting surface of the cutter is the conical surface in the actual operation and use process, so that although the area of the actual operation surface is increased, the cutter head can still be rapidly pushed without cake formation due to the fact that the drill bit has two centripetal force directions which are analyzed as before. Meanwhile, the movement of the cutter head can be continuously adjusted, and various movements such as rotation, pitching, stretching, lateral movement and the like can be realized.
Example 2
In a typical embodiment of the present invention, as shown in fig. 2, in example 2, a centrally protruding anti-caking cutter head is disclosed, which comprises a second cutter head body in a disc shape and a plurality of cutters mounted on the cutter head body; the plurality of cutters are in a multi-turn circular array, and the heights of the cutters 26 gradually increase from the outer turn to the inner turn.
The end face of the cutter head body is a plane.
It can be understood that the rear side of the second cutterhead main body 21 is also provided with a second soil bin 22, which forms a component of the whole cutterhead, and also comprises a slurry inlet pipeline and a slurry discharge pipeline, wherein the outlet of the slurry inlet pipeline is communicated with the soil bin; the slurry discharging inlet of the slurry discharging pipeline is communicated with the soil bin.
The cutter head body is provided with a plurality of mounting holes 23 in a multi-circle circular array, and the cutters are mounted in the mounting holes 23.
In the present embodiment, a total of 3 circles of cutters, namely, an outer circle cutter 24, a middle circle cutter 25 and an inner circle cutter 26, are included, and are sequentially arranged along a direction from the outer circle to the inner circle.
Similar to the principle of embodiment 1, when this embodiment is used specifically, the disclosed cutter head of this embodiment is installed behind the shield machine, and when the stage property that rotates and drive is crept into, because the front end of cutter is not located a plane, at the front side of shield machine, except along the centrifugal force of cutter head rotation axis to cutter head edge, the motion trend of still existing by the cutter head body to the soil storehouse can effectively break away from the soil material that adheres to at the cutter head, avoids forming the mud cake. Compared with the excavation surface, the cutter head of the invention has the advantages that the cutting surface of the cutter is the conical surface in the actual operation and use process, so that although the area of the actual operation surface is increased, the cutter head can still be rapidly pushed without cake formation due to the fact that the drill bit has two centripetal force directions which are analyzed as before. Meanwhile, the movement of the cutter head can be continuously adjusted, and various movements such as rotation, pitching, stretching, lateral movement and the like can be realized.
Example 3
In a typical implementation manner of the present invention, as shown in fig. 3, in example 3, a centrally protruding anti-caking cutter head is disclosed, which includes a first cutter head in a disc shape and a second cutter head in an annular shape, the first cutter head is disposed in the second cutter head, the first cutter head and the second cutter head are connected by a connector 33, and when the cutter head integrally rotates, the first cutter head and the second cutter head are located on different planes.
In this embodiment, the first cutter disc is named as an outer ring cutter disc 31 and the second cutter disc is named as a central cutter disc 35 according to specific positions.
The tool further comprises a third tool 34, the first cutter disc body 11 is provided with a plurality of circle-shaped array mounting holes 23, and the tools are mounted in the mounting holes 23.
The length of connector 33 is greater than outer loop blade disc 31 and the interval between the central blade disc 35, this connector 33 should use special material to have fine elasticity in order to guarantee that central blade disc 35, can make the extension length of central blade disc 35 different in the stratum of difference, transform into the blade disc shape of different patterns for this blade disc can adapt to different stratum, reaches the effect of preventing the mud cake, has fine flexibility.
In this embodiment, the connector 33 is a chain cable.
It can be understood that, similar to the principle of embodiment 1, when the embodiment is used specifically, the cutter head disclosed in the embodiment is installed behind the shield machine, and when the tool bit which is rotated and driven drills, because the front end of the cutter is not located in a plane, at the front side of the shield machine, except the centrifugal force from the rotating shaft of the cutter head to the edge of the cutter head, the existing movement trend from the cutter head body to the soil bin can effectively break away from the soil attached to the cutter head, and the formation of mud cakes is avoided. Compared with the excavation surface, the cutter head of the invention has the advantages that the cutting surface of the cutter is the conical surface in the actual operation and use process, so that although the area of the actual operation surface is increased, the cutter head can still be rapidly pushed without cake formation due to the fact that the drill bit has two centripetal force directions which are analyzed as before. Meanwhile, the movement of the cutter head can be continuously adjusted, and various movements such as rotation, pitching, stretching, lateral movement and the like can be realized.
Example 4
In a typical embodiment of the present invention, in addition to the center protruding anti-caking cutterhead described in embodiments 1 to 3, a shield tunneling machine including the center protruding anti-caking cutterhead described in any one of embodiments 1 to 3 is also disclosed. The specific structure of the shield machine may be any one of the existing shield machines, and is not described herein again.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (3)
1. A centrally-protruded anti-caking cutter head is characterized by comprising a disc-shaped first cutter head and an annular second cutter head, wherein the first cutter head is arranged at the center of the second cutter head, the first cutter head is connected with the second cutter head through a connector, and when the cutter heads integrally rotate, the first cutter head and the second cutter head are positioned on different planes;
the connector is a chain cable to ensure that the first cutter disc has good flexibility, the extension length of the first cutter disc can be different in different stratums, and the first cutter disc can be changed into cutter disc shapes of different styles, so that the cutter disc can adapt to different stratums to achieve the effect of preventing mud cakes.
2. The centrally-protruding anti-caking cutter disc as claimed in claim 1, further comprising a cutter, wherein the first cutter disc body is provided with a plurality of mounting holes in a multi-turn circular array, and the cutter is mounted in the mounting holes.
3. The centrally projecting anti-caking impeller according to claim 1, wherein the length of said coupling is greater than the distance between said first impeller and said second impeller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010738026.1A CN112065417B (en) | 2020-07-28 | 2020-07-28 | Center-protruded anti-caking cutter head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010738026.1A CN112065417B (en) | 2020-07-28 | 2020-07-28 | Center-protruded anti-caking cutter head |
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| Publication Number | Publication Date |
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| CN112065417A CN112065417A (en) | 2020-12-11 |
| CN112065417B true CN112065417B (en) | 2023-02-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010738026.1A Active CN112065417B (en) | 2020-07-28 | 2020-07-28 | Center-protruded anti-caking cutter head |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112647964B (en) * | 2020-12-28 | 2023-05-12 | 中铁十一局集团有限公司 | Super-large diameter shield normal pressure cutterhead mud cake removing device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB970016A (en) * | 1963-02-14 | 1964-09-16 | Kinnear Moodie & Company Ltd | Improvements in and relating to tunnel boring machines |
| US5032039A (en) * | 1989-06-16 | 1991-07-16 | Daiho Construction Co., Ltd. | Underground excavator |
| CN106089228A (en) * | 2016-06-15 | 2016-11-09 | 江苏建筑职业技术学院 | A kind of mining machinery drive-type cutterhead |
| CN107559018A (en) * | 2017-09-06 | 2018-01-09 | 大连理工大学 | A kind of design method of the fraction TBM cutter head structure forms of middle circle five |
| CN209040840U (en) * | 2018-08-21 | 2019-06-28 | 上海交通大学 | A kind of evagination semi shield oil cylinder and mud water balance push bench |
| CN209670976U (en) * | 2018-06-29 | 2019-11-22 | 中铁工程装备集团有限公司 | A kind of development machine using pressure (hydraulic) water broken rock |
| CN110566220A (en) * | 2019-09-23 | 2019-12-13 | 济南重工股份有限公司 | Novel center fishtail cutter for push bench |
-
2020
- 2020-07-28 CN CN202010738026.1A patent/CN112065417B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB970016A (en) * | 1963-02-14 | 1964-09-16 | Kinnear Moodie & Company Ltd | Improvements in and relating to tunnel boring machines |
| US5032039A (en) * | 1989-06-16 | 1991-07-16 | Daiho Construction Co., Ltd. | Underground excavator |
| CN106089228A (en) * | 2016-06-15 | 2016-11-09 | 江苏建筑职业技术学院 | A kind of mining machinery drive-type cutterhead |
| CN107559018A (en) * | 2017-09-06 | 2018-01-09 | 大连理工大学 | A kind of design method of the fraction TBM cutter head structure forms of middle circle five |
| CN209670976U (en) * | 2018-06-29 | 2019-11-22 | 中铁工程装备集团有限公司 | A kind of development machine using pressure (hydraulic) water broken rock |
| CN209040840U (en) * | 2018-08-21 | 2019-06-28 | 上海交通大学 | A kind of evagination semi shield oil cylinder and mud water balance push bench |
| CN110566220A (en) * | 2019-09-23 | 2019-12-13 | 济南重工股份有限公司 | Novel center fishtail cutter for push bench |
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