CN106401594B - A kind of compound knife disc tool method for arranging of shield machine - Google Patents

A kind of compound knife disc tool method for arranging of shield machine Download PDF

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Publication number
CN106401594B
CN106401594B CN201610591800.4A CN201610591800A CN106401594B CN 106401594 B CN106401594 B CN 106401594B CN 201610591800 A CN201610591800 A CN 201610591800A CN 106401594 B CN106401594 B CN 106401594B
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cutter
disk
disk cutter
diameter
digging track
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CN106401594A (en
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王乾廷
谢万其
陈鼎宁
王火生
陈文哲
李晨宇
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Fujian University of Technology
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Fujian University of Technology
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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 kind of compound knife disc tool method for arranging of shield machine, compound cutterhead uses board wheel, method for arranging including cutter, hobboing cutter, utilize the service life of formula equivalent calculated cutter and hobboing cutter, adjust the installation diameter of cutter and hobboing cutter, different materials is selected, keeps two cutter lifes identical.The method that the present invention devises cutter head of shield machine cutter equivalent life, using calculation formula, the wear intensity of cutter driving distance is calculated, further estimates the distance that cutter is tunneled in service life, compare hobboing cutter and cutter service life, diameter and the increase and decrease modes such as cutter and hobboing cutter quantity are installed by change so that the two service life is close, when cutter needs replacing, cutter and the unified replacement of hobboing cutter, reduce number of changing knife, securely and reliably, there is certain guaranteeing role to shield machine working hour.

Description

A kind of compound knife disc tool method for arranging of shield machine
Technical field
The invention belongs to cutter head of shield machine design field more particularly to a kind of compound knife disc tool method for arranging of shield machine.
Background technology
With the prosperity of communications and transportation, the construction of the heavy constructions such as various tunnels, subway increases the demand of shield machine More, higher and higher to its performance requirement, especially in the construction of compound stratum, the requirement to cutter head of shield machine is extremely stringent. The selection of cutter head of shield machine cutter is the determination according to different geological conditions, and for compound stratum, the arrangement of cutter should expire The driving demand of foot weakness soil and layer of sand, sand-pebble layer and lithosphere etc. Different Stratas.The headwork of compound stratum Complexity, cutter must be replaced.
The replacement of cutter need to fully take into account the mode that the gentle crush-cutting of no air pressure changes, and use the shield machine of earth pressure balance at present It is more, when replacing cutter, it is necessary to be switched using air pressure.This tool changing environment is careless slightly to the prodigious difficulty of tool changing band, It can cause corresponding accident, cause engineering by unnecessary loss.
Therefore, it is intended that reducing number of changing knife and frequency, it is adjusted for the different service lifes of different cutters so that no Number of changing knife is reduced, makes shield machine tool changing more to obtain identical tool change time with cutter service life having the same Securely and reliably.
Invention content
Present invention aim to address the prior arts, provide a kind of cutterhead arrangement side effectively reducing number of changing knife and frequency Method.For achieving the above object, the technical scheme is that：
A kind of compound knife disc tool method for arranging of shield machine, compound cutterhead use board wheel, and cutter includes niDisk Shape hobboing cutter and njCutter, cutter head center configures disk cutter, and periphery is cutter and disk cutter mixed configuration；
The niDisk cutter and njCutter in identical driving distance, while reaching the limit of wear extent；
1) driving distance of wear extent is first reached the limit of according to fixed cutter quantity and cutter installation diameter calculation cutter L2
The njCutter is distributed on a plurality of digging track, wherein the cutter quantity on maximum digging track is n2, and n2＞ 1, then every barasion coefficient K cutter on the digging trackn2For
Wherein K2For the barasion coefficient of cutter；
Actually measured maximum digging track upper cutter installation diameter D2, the cutting blade abrasion at actually measured cutter maximum gauge Amount is the tear-to-wear allowance δ of cutter2, it is known that the velocity of rotation N of cutterhead, since cutter tear-to-wear allowance is constant, then the maximum is dug Cut the driving distance L that track upper cutter reaches the limit of wear extent2For：
2) according to the preset quantity n of the disk cutter of maximum digging track1, default disk cutter diameter D1Tentative calculation dish type is rolled Knife reaches the limit of the driving distance L of wear extent1
The niDisk cutter is distributed on a plurality of digging track, wherein the disk cutter quantity on maximum digging track For n1, and n1＞ 1, then every barasion coefficient K disk cutter on the digging trackn1For
Wherein K1For the barasion coefficient of disk cutter；
Since disk cutter tear-to-wear allowance is constant, then disk cutter reaches the limit of the pick of wear extent on same digging track Into distance L1For：
Wherein, δ1For the tear-to-wear allowance of disk cutter, K1For the barasion coefficient of disk cutter, D1It is installed for disk cutter Diameter, N are the velocity of rotation of cutterhead, and V is driving speed；
3) compare L1 and L2, change preset quantity n1, default disk cutter diameter D1Again tentative calculation until the two relatively
If L1<L2, increase the preset quantity n of disk cutter1, reduce and preset disk cutter diameter D1, return to step 2)；
If L1>L2, reduce the preset quantity n of disk cutter1, increase and preset disk cutter diameter D1, return to step 2)；
If L1With L2It is closer to, then preset quantity n1Final amt for disk cutter in the maximum digging track n1, preset disk cutter diameter D1Installation diameter for disk cutter in the maximum digging track stops cycle.
The beneficial effects of the invention are as follows：
The method that the present invention devises cutter head of shield machine cutter equivalent life, using calculation formula, according to the wear intensity of cutter, Cutter institute's driving distance in service life installs diameter and the increase and decrease modes such as cutter and hobboing cutter quantity by change so that The two service life is close, and when cutter needs replacing, cutter and the unified replacement of hobboing cutter reduce number of changing knife, securely and reliably, to shield There is certain guaranteeing role in structure machine working hour.
Specific implementation mode
Technical scheme of the present invention is clearly and completely described below in conjunction with specific embodiment.
A kind of compound knife disc tool method for arranging of shield machine of the present invention, compound cutterhead use board wheel, cutter packet Include niDisk cutter and njCutter, cutter head center configures disk cutter, and periphery is cutter and disk cutter mixed configuration；
The niDisk cutter and njCutter in identical driving distance, while reaching the limit of wear extent；
The niDisk cutter is distributed on a plurality of digging track, wherein the disk cutter quantity on same digging track For n1, and n1＞ 1, then every barasion coefficient K disk cutter on the digging trackn1For
Wherein K1For the barasion coefficient of disk cutter；
Since disk cutter tear-to-wear allowance is constant, then disk cutter reaches the limit of the pick of wear extent on same digging track Into distance L1For：
Wherein, δ1For the tear-to-wear allowance of disk cutter, K1For the barasion coefficient of disk cutter, D1It is installed for disk cutter Diameter, N are the velocity of rotation of cutterhead, and V is driving speed；
The njCutter is distributed on a plurality of digging track, wherein the cutter quantity on same digging track is n2, and n2＞ 1, then every barasion coefficient K cutter on the digging trackn2For
Wherein K2For the barasion coefficient of cutter；
Since cutter tear-to-wear allowance is constant, then same digging track upper cutter reaches the limit of the driving distance L of wear extent2 For：
Wherein, δ2For the tear-to-wear allowance of cutter, K2For the barasion coefficient of cutter, D2Diameter is installed for cutter, N is cutterhead Velocity of rotation；
By mathematical method, analysis calculates, as the disk cutter driving distance L1With cutter driving distance L2Numerical value connects When close, disk cutter quantity ni, disk cutter installation diameter D1, cutter quantity nj, cutter installation diameter D2。
According to construction soil layer actual conditions, by taking Xiamen of Fujian Province area as an example, the soft or hard unevenness in Fuzhou-Xiamen area soil layer section, especially There is the rotten quartzy sandstone in top sand lower part, easily caves in.
1, shield machine outer diameter is selected：Φ 6480mm, shield body length：About 9475mm；Smallest curve radius：250m.Cutterhead turns Speed：0.3~3.05rpm takes 1rpm；Average Advance rate：3.5cm/min.
2, tool wear is calculated by the cutting blade abrasion amount at maximum gauge.δ220mm is taken, by tabling look-up, K2Take 30 × 10- 3mm/km actually measures to obtain D2=6280mm.Utilize formula：δ2=K2·π·D2·N2·L2/V
N at this time2=12
Bring K inton2=K1/n1 0.333
Obtain Kn2=13.1
Bring formula L into2=δ2·V/(Kn2·π·D2·N2)
Obtain L2=2738.4m
3, tool wear is calculated by the hob abrasion amount at maximum gauge.δ125mm is taken, by tabling look-up, K1Take 40 × 10- 3mm/km actually measures to obtain D1=6200mm.Utilize formula：δ1=0.1K1·π·D1·N1·L1/ V n at this time1=6
Bring K inton1=K1/n1 0.333
Obtain Kn1=22.0
Bring formula L into1=δ1·V/(Kn1·π·D1·N1)
Obtain 11=2041.9m
4, according to estimation result, to make L1=L2, cutter and hobboing cutter installation radius and number of cutters are adjusted, to simplify process, It is adjusted using unidirectional, i.e., only adjusts hobboing cutter quantity and radial location.Double hobboing cutter quantity, i.e. n1=12, it is straight to reduce hobboing cutter Diameter, i.e. D1=6000mm.
Again K is brought inton1=K1/n1 0.333
Obtain Kn1=17.5
Bring formula L into1=δ1·V/(Kn1·π·D1·N1)
Obtain L1=2653m
At this point, L1With L2It is closer to, it is believed that the service life is equal under normal usage for cutter hobboing cutter.
5, make cutter and hobboing cutter destruction having the same using equivalent life cutter group using result of calculation installation cutter in 4 Timing node, while more renewing cutter, it reduces and replaces number, reduce operating risk.

Claims (1)

1. a kind of compound knife disc tool method for arranging of shield machine, compound cutterhead uses board wheel, and cutter includes niDish type is rolled Knife and njCutter, cutter head center configures disk cutter, and periphery is cutter and disk cutter mixed configuration；The niDish type is rolled Knife and njCutter in identical driving distance, while reaching the limit of wear extent；It is characterized in that,
1) the driving distance L of wear extent is first reached the limit of according to fixed cutter quantity and cutter installation diameter calculation cutter2
The njCutter is distributed on a plurality of digging track, wherein the cutter quantity on maximum digging track is n2, and n2＞ 1, then every barasion coefficient K cutter on the maximum digging trackn2For
Wherein K2For the barasion coefficient of cutter；
Actually measured maximum digging track upper cutter installation diameter D2, the cutting blade abrasion amount at actually measured cutter maximum gauge is The tear-to-wear allowance δ of cutter2, it is known that the velocity of rotation N of cutterhead, since cutter tear-to-wear allowance is constant, then the maximum digging rail Mark upper cutter reaches the limit of the driving distance L of wear extent2For：
2) according to the preset quantity n of the disk cutter of maximum digging track1, default disk cutter installation diameter D1Tentative calculation dish type is rolled Knife reaches the limit of the driving distance L of wear extent1
The niDisk cutter is distributed on a plurality of digging track, wherein the disk cutter quantity on maximum digging track is n1 , and n1＞ 1, then every barasion coefficient K disk cutter on the digging trackn1For
Wherein K1For the barasion coefficient of disk cutter；
Since disk cutter tear-to-wear allowance is constant, then on same digging track disk cutter reach the limit of the driving of wear extent away from From L1For：
Wherein, δ1For the tear-to-wear allowance of disk cutter, K1For the barasion coefficient of disk cutter, D1Diameter is installed for disk cutter, N is the velocity of rotation of cutterhead, and V is driving speed；
3) compare L1With L2, change preset quantity n1, default disk cutter installation diameter D1Again tentative calculation until the two relatively
If L1<L2, increase the preset quantity n of disk cutter1, reduce and preset disk cutter diameter D1, return to step 2)；
If L1>L2, reduce the preset quantity n of disk cutter1, increase and preset disk cutter diameter D1, return to step 2)；
If L1With L2It is closer to, then preset quantity n1Final amt n for disk cutter in the maximum digging track1, in advance If disk cutter installs diameter D1Installation diameter for disk cutter in the maximum digging track stops cycle.
CN201610591800.4A 2016-07-26 2016-07-26 A kind of compound knife disc tool method for arranging of shield machine Active CN106401594B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109854179B (en) * 2018-12-21 2021-01-26 太重（天津）滨海重型机械有限公司 Drilling tool of pile top drilling machine
CN112926015B (en) * 2021-03-11 2022-04-19 南昌航空大学 Method for pre-estimating and calculating abrasion loss of cutter of shield tunneling machine

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Publication number Priority date Publication date Assignee Title
CN101457646A (en) * 2009-01-05 2009-06-17 华北电力大学 Balancing arrangement method on cutterhead for positive hobbing cutter and transition hobbing cutter
CN102418531A (en) * 2011-12-14 2012-04-18 中铁十二局集团有限公司 Tunneling construction method for directly removing overpass group piles by using shield machine
CN102889085A (en) * 2012-10-14 2013-01-23 上海城建市政工程（集团）有限公司 Tunneling construction method for shield tunneling machine
CN102900848A (en) * 2012-10-26 2013-01-30 中铁隧道集团有限公司 Shield tunneling machine under pressure warehouse entry air bag sealing device and method
CN103696778A (en) * 2013-12-23 2014-04-02 北京交通大学 Pile cutting cutter amount determination method capable of realizing equal abrasion
CN104196541A (en) * 2014-07-31 2014-12-10 华北电力大学 Service life arrangement method for disk cutters and the like on cutter head of whole section tunneling machine
CN104453918A (en) * 2014-10-30 2015-03-25 中铁四局集团第二工程有限公司 Water-rich sandy cobble stratum shield short-range underneath pass rigid bridge construction method
CN104806259A (en) * 2015-05-27 2015-07-29 上海绿地建设(集团)有限公司 Construction method for quickly getting cutterhead out of frozen earth in shield launching stage
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CN102418531A (en) * 2011-12-14 2012-04-18 中铁十二局集团有限公司 Tunneling construction method for directly removing overpass group piles by using shield machine
CN102889085A (en) * 2012-10-14 2013-01-23 上海城建市政工程（集团）有限公司 Tunneling construction method for shield tunneling machine
CN102900848A (en) * 2012-10-26 2013-01-30 中铁隧道集团有限公司 Shield tunneling machine under pressure warehouse entry air bag sealing device and method
CN103696778A (en) * 2013-12-23 2014-04-02 北京交通大学 Pile cutting cutter amount determination method capable of realizing equal abrasion
CN104196541A (en) * 2014-07-31 2014-12-10 华北电力大学 Service life arrangement method for disk cutters and the like on cutter head of whole section tunneling machine
CN104453918A (en) * 2014-10-30 2015-03-25 中铁四局集团第二工程有限公司 Water-rich sandy cobble stratum shield short-range underneath pass rigid bridge construction method
CN104806259A (en) * 2015-05-27 2015-07-29 上海绿地建设(集团)有限公司 Construction method for quickly getting cutterhead out of frozen earth in shield launching stage
CN105604557A (en) * 2015-12-30 2016-05-25 福建工程学院 Shield construction boulder detection method based on seismic CT

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