CN109281683A - A kind of hard rock mole Vibration Absorption Designing method changing cutterhead flange bolt material - Google Patents
A kind of hard rock mole Vibration Absorption Designing method changing cutterhead flange bolt material Download PDFInfo
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- CN109281683A CN109281683A CN201811305468.6A CN201811305468A CN109281683A CN 109281683 A CN109281683 A CN 109281683A CN 201811305468 A CN201811305468 A CN 201811305468A CN 109281683 A CN109281683 A CN 109281683A
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- 239000011435 rock Substances 0.000 title claims abstract description 71
- 238000000034 method Methods 0.000 title claims abstract description 25
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- 238000010521 absorption reaction Methods 0.000 title claims abstract description 7
- 238000013016 damping Methods 0.000 claims abstract description 58
- 230000005641 tunneling Effects 0.000 claims abstract description 46
- 239000000956 alloy Substances 0.000 claims abstract description 23
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- 230000003068 static effect Effects 0.000 description 2
- 229910017566 Cu-Mn Inorganic materials 0.000 description 1
- 229910017871 Cu—Mn Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 230000006835 compression Effects 0.000 description 1
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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
- 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
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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
- E21D9/0875—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 movable support arm carrying cutting tools for attacking the front face, e.g. a bucket
- E21D9/0879—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 movable support arm carrying cutting tools for attacking the front face, e.g. a bucket the shield being provided with devices for lining the tunnel, e.g. shuttering
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/10—Geometric CAD
- G06F30/17—Mechanical parametric or variational design
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
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- G06F30/20—Design optimisation, verification or simulation
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Abstract
The present invention provides a kind of hard rock mole Vibration Absorption Designing methods for changing cutterhead flange bolt material, comprising: 1) reasonably selects the high damping alloy material of damping bolt；2) flange bolt structure high damping alloy bolt arrangement is determined；3) the main drive system complete machine kinetic model of tunneling boring hard rock mole is established；4) equivalent stiffness and damping of each subsystem of kinetic model are determined；5) the hobboing cutter broken rock dynamic load of hobboing cutter and rock interaction generation is calculated；6) it solves kinetic model and compares and change the bolt material front and back main driving complete machine oscillation earthquake intensity of tunneling boring hard rock mole.The present invention passes through changing section flange bolt structural bolts material and reasonable Arrangement, in the case where not reducing penetration performance and meeting working strength, the vibration resistance that the main driving complete machine oscillation of tunneling boring hard rock mole is effectively reduced, improves tunneling boring hard rock mole, operating noise is reduced, engineering economy loss is reduced.
Description
Technical field
The invention belongs to tunneling boring hard rock mole technical fields, set more particularly to the vibration damping of tunneling boring hard rock mole
Meter method.
Background technique
Main drive system is the core component of tunneling boring hard rock mole.Since host rock environment is complicated, Service Environment is severe
And the characteristic of cutterhead hobboing cutter multiple spot impact grinding rock, so that cutterhead bears hobboing cutter in the construction process and rock interaction produces
Raw large torque, high thrust, the random distribution load of intense impact, cutterhead show as violent random vibration.Cutterhead vibrates
It is one of the reason of causing cutterhead fatigue rupture, biggish to vibrate the drivage efficiency that will seriously affect, cutterhead is reduced with the service life, can also
Cause cutter spindle to hold seal failure, the generation of the accidents such as cutterhead local damage, therefore reduces the main drive of tunneling boring hard rock mole
Dynamic system complete machine oscillation or to improve its vibration resistance imperative.
So far, tunneling boring hard rock mole master generally is reduced by adjusting tunneling boring hard rock mole boring parameter
The Vibration Condition of complete machine is driven, for example reduces driving pile penetration, but this method can generally reduce drivage efficiency, and then influence whole
A duration of a project leads to unnecessary cost offer and manpower consumption, this is also the result that we are not intended to see.It is same with this
When, the structure by changing the main drive system of tunneling boring hard rock mole is also a kind of common method of scholars, but this
Method is generally difficult to reach good effectiveness in vibration suppression, and tunneling boring hard rock mole structure is pulled one hair and move the whole body, may
Lead to other unpredictalbe engineering problems.
High damping alloy is the material advantage with vibration damping anti-noise, can reach and improves machine operation precision, extends service life, sound
Purpose that is stealthy and mitigating noise nuisance.In recent decades, in terms of high damping alloy is used for engineering machinery, reaches material and subtract
Research in terms of vibration purpose is also quickly grown.But so far, does not see also and high damping alloy is applied to the pick of tunneling boring hard rock
Into the open source literature of machine.There is provided tunneling boring hard rock mole main driving system it should be noted that the alloy material of selection will meet
It must satisfy the basic intensity requirement of tunneling boring hard rock mole and penetration performance requirement while the resistance to shock of system.
Summary of the invention
For the difficult point of nowadays tunneling boring hard rock mole antivibration, the present invention is in the pick for guaranteeing tunneling boring hard rock mole
Under the premise of performance and intensity requirement, a kind of method for changing bolt material in flange bolt structure is proposed, has reached complete
The purpose of the main drive system complete machine vibration damping of section hard rock tunneling machine.
Technical solution of the present invention:
A kind of hard rock mole Vibration Absorption Designing method changing cutterhead flange bolt material, steps are as follows:
The high damping alloy material of Step1 selection damping bolt
With the part bolt in high damping alloy material bolt replacement cutterhead flange of the yield strength not less than 300MPa；
Step2 determines the arrangement of high damping alloy in flange bolt structure
For from the point of view of setting angle and flange bolt connector stress, to be easily installed, uniform force and extension
Component service life, flange bolt usually use span centre to be distributed.Equally, it is also required to consider when part bolt is changed to damping bolt
The problem of bolt is uniformly distributed.Bolt carries out linear transformation at interval of one group of bolt group in flange bolt structure.
Step3 establishes tunneling boring hard rock mole cutter-devices system complete machine kinetic model
Based on finite element theory, a kind of modeling method by different level is proposed, it is according to the assembly relation between component that tunneling boring is hard
Rock development machine cutter-devices system is split, and cutterhead subsystem, support drives subsystem and flange bolt connexon are divided into
System three subsystems, cutterhead fission and cutter head center block form cutterhead subsystem；Main shaft bearing outer-ring and headstock are welded as one
A entirety is coupled as support subsystem by oil cylinder with support shield, and pinion gear, retarder, motor and inner ring gear composition drive
Subsystem, support subsystem and drives subsystem are as support drives subsystem；Flange bolt connect subsystem by cutterhead flange,
Base bearing inner ring is made up of bolted-on；Support drives subsystem connect subsystem connection by flange bolt with cutterhead subsystem
Knot, with concentrated quality method, considers contact stiffness, damping and bolt pretightening of more faying faces etc., establishes tunneling boring hard rock
Tunnel owner's drive system multiple degrees of freedom Coupled Vibration System.
Step4 determine each subsystem in tunneling boring hard rock mole cutter-devices system complete machine kinetic model it is equivalent just
Degree and damping
Step4.1 cutterhead subsystem, support drives subsystem connect with flange bolt subsystem equivalent stiffness pass through it is limited
First method determines, i.e., applies specific loading in model direction and obtain displacement cloud atlas, according to recklessly can law determine cutterhead subsystem,
Support the equivalent stiffness of drives subsystem, support subsystem and flange bolt connection subsystem；
Step4.2 equivalent damping is calculated according to following formula:
In formula, ξ is damping ratio, me, keRespectively equivalent mass and equivalent stiffness.
The hobboing cutter broken rock dynamic load that Step5 calculates hobboing cutter and rock interaction generates
For geological conditions complicated and changeable, the tunneling boring hard rock mole under different mode, different geological conditions is rolled
Knife carries out the numerical simulation of rock cutting, obtains single hobboing cutter lateral force, vertical force and rolling force；
In conjunction with the hobboing cutter three directional loads that single hobboing cutter obtains, cutterhead stress condition in construction is calculated:
Axial force of the cutterhead along tunnel excavation direction:
Along the vertical out-of-balance force of disk:
Along the lateral out-of-balance force of disk:
The cutter head torque that rolling force generates:
In formula, the quantity of n, m, p-central hob, positive hobboing cutter, side hobboing cutter；Fτi、Fτj、Fτk(τ=v, X, Y, r)-is single
The vertical force of hobboing cutter, lateral out-of-balance force, longitudinal unbalance power, rolling force；ρτ(τ=i, j, k)-central hob, positive hobboing cutter,
Distance of the side hobboing cutter to cutter head center；
Step6, which solves kinetic model and compares, changes the main driving complete machine vibration of bolt material front and back tunneling boring hard rock mole
Dynamic earthquake intensity:
Using MATLAB software, dynamics mathematical model is solved, comparison tunneling boring hard rock before and after changing bolt material is dug
Complete machine oscillation earthquake intensity is driven into owner, verifies the correctness of this patent.
Beneficial effects of the present invention: the present invention considers existing structure vibration damping and adjusts lacking for boring parameter oscillation damping method
Point proposes a kind of method of material vibration damping, can reach under the premise of meeting intensity requirement and not reducing penetration performance
The effect of vibration damping.Structure design difficulty and cost consumption are reduced, tunneling boring hard rock mole working life is delayed.
Detailed description of the invention
Fig. 1 is flange bolt connexon system schematic, (a) perspective view, (b) side view.
Fig. 2 is the main driving structure of tunneling boring hard rock mole, (a) front perspective view, (b) rear perspective view.
Fig. 3 is tunneling boring hard rock mole host along the axial kinetic model in tunnel excavation direction, wherein FLAlong tunnel
Excavate the axial force in direction, mi、keqiz、ceqizWith Zi(i=1,2,3) is respectively cutterhead subsystem, flange bolt connection structure
System supports quality, axial equivalent stiffness, axial equivalent damping and the axial vibratory displacement of drives subsystem.
Fig. 4 is tunneling boring hard rock mole host along the Vertical Kinetics Model of cutterhead disk, wherein FYAlong cutterhead disk
Vertical out-of-balance force, mi、keqiy、ceqiyWith Yi(i=1,2,3) is respectively cutterhead subsystem, flange bolt connection structure subsystem
System supports quality, vertical equivalent stiffness, vertical equivalent damping and the vertical vibration of drives subsystem to be displaced, keqy、ceqyRespectively
The vertical equivalent stiffness and equivalent damping of support system.
Fig. 5 is tunneling boring hard rock mole host along the horizontal dynamic model of cutterhead disk, wherein FXAlong cutterhead disk
Lateral out-of-balance force, mi、keqix、ceqixWith Xi(i=1,2,3) is respectively cutterhead subsystem, flange bolt connection structure subsystem
System supports quality, lateral equivalent stiffness, lateral equivalent damping and the transverse vibrational displacement of drives subsystem, keqx、ceqxRespectively
The lateral equivalent stiffness and equivalent damping of support system.
Fig. 6 is cutterhead subsystem three-way vibration acceleration comparison diagram, and (a) is to assemble former bolt vibration acceleration figure, (b) is
Assemble high damping alloy bolt vibration acceleration figure.
Fig. 7 is that flange bolt connects subsystem three-way vibration acceleration comparison diagram, and (a) is to assemble former bolt vibration acceleration
Figure is (b) assembly high damping alloy bolt vibration acceleration figure.
Fig. 8 is support drives subsystem three-way vibration acceleration comparison diagram, and (a) is to assemble former bolt vibration acceleration figure,
It (b) is assembly high damping alloy bolt vibration acceleration figure.
In figure: 1 first kind bolt hole group is made of 6 bolts hole, assembles former bolt；2 second class bolt hole groups, by 4 or
5 bolt hole compositions, assemble high-damping bolt；3 cutterhead flanges；4 base bearing inner rings；5 main shaft bearing outer-rings；6 top shields；7 sides shield
Shield；8 pedestals；9 cutterheads；10 hobboing cutter systems；11 headstocks；12 motor groups.
Specific embodiment
The present invention is by taking certain seepage tunnel engineering as an example, in which: rock main physical parameters are as follows: full face tunnel boring machine tunnels rock
Stone is mainly granite gneiss, rock density 2750Kgm-3, rock saturation compression strength 93.6MPa, internal friction angle
33.4 °, cohesive force 0.9MPa, elasticity modulus 18 × 103MPa, Poisson's ratio 0.9,6~30MPa of confining pressure, 130~1000m of buried depth.
Full face tunnel boring machine major parameter are as follows: cutter radius R=4.015m, cutterhead revolving speed are 8r/min, and cutterhead subsystem quality is
135t, flange bolt connexon mass of system are 20t, support drives subsystem 300t.
Above-mentioned practical full face tunnel boring machine major parameter and Analysis of Field Geotechnical Parameters are brought into a kind of change cutterhead method by the present embodiment
At orchid in the tunneling boring hard rock mole Vibration Absorption Designing method of bolt material, the specific steps are as follows:
The high damping alloy material of Step1 reasonable selection damping bolt:
The resistance that alloy material is defined than damping S.D.C (%) (Specific Damping Capacity) is used in engineering
Damping properties
In formulaWithFor the Amplitude-squared of t-1 and t moment.
Damping capacity of some metal materials of table 1 in room temperature
Comprehensively consider S.D.C coefficient, yield strength and cost, selects Cu-Mn alloy as bolt high damping alloy.Elasticity
Modulus is 6.07e10pa, density 6685kg/m3, Poisson's ratio 0.3, yield strength 310Mpa.
Step2 determines that flange bolt structure high damping alloy bolt arrangement and bolt strength emulation are checked:
Flange bolt structure high damping alloy bolt is arranged as shown in Figure 1, being spaced apart using Bolt, wherein 1 class spiral shell
Bolt group assembles former bolt, and 2 class bolts assemble high-damping bolt.Full face tunnel boring machine after assembly high damping alloy is carried out limited
Meta analysis, under practical dead load, maximum stress 168MPa suffered by flange bolt junction is lower than 310MPa, meets working strength
It is required that.
Step3 establishes tunneling boring hard rock mole cutter-devices system complete machine kinetic model:
Based on finite element theory, a kind of modeling method by different level is proposed, as shown in Fig. 2, according to the assembly relation between component
Tunneling boring hard rock mole cutter-devices system is split, cutterhead subsystem can be divided into, supports drives subsystem and method
Orchid is bolted subsystem three subsystems, and cutterhead fission and cutter head center block form cutterhead subsystem, and support system is by main shaft
Bearing outer-ring and headstock are welded as a whole and are coupled as support system, pinion gear, retarder by oil cylinder with support shield
Drive system is formed with motor and inner ring gear, is reduced mechanism, support system and drive system are seen as an entirety
To support drives subsystem, flange bolt connects subsystem and passes through bolted-on composition, support for cutterhead flange, base bearing inner ring
Drives subsystem and cutterhead subsystem pass through flange bolt connexon system connection and consider more faying faces with concentrated quality method
Contact stiffness, damping and bolt pretightening etc., establish the main drive system multiple degrees of freedom coupling vibration of tunneling boring hard rock mole
Dynamic system.
Tunneling boring hard rock mole host along tunnel excavation direction axial kinetic model as shown in figure 3, tunneling boring is hard
Rock tunnel machine host along cutterhead disk Vertical Kinetics Model as shown in figure 4, tunneling boring hard rock mole host along cutterhead disk
The horizontal dynamic model in face is as shown in Figure 5.
Step4 determines the equivalent stiffness and damping of each subsystem in kinetic model:
By FInite Element, point load is applied to tunneling boring hard rock mole threedimensional model, in conjunction with recklessly can law can obtain
To the equivalent stiffness of each subsystem, while equivalent damping can be calculated according to mechanical design handbook empirical equation:
In formula, ξ is damping ratio, me, keRespectively equivalent mass and equivalent stiffness.The specific equivalent stiffness of the present embodiment with etc.
Effect damping is as shown in table 2.
2 equivalent stiffness of table and equivalent damping
The hobboing cutter broken rock dynamic load that Step5 calculates hobboing cutter and rock interaction generates:
For geological conditions complicated and changeable, using simulation software Ls-Dyna under different mode, different geological conditions
Tunneling boring hard rock tunneller hob carries out the numerical simulation of rock cutting, wherein according to engineering experience data, takes the cutterhead revolving speed to be
8r/min, driving speed 5mm/s, and be applied on hobboing cutter cutter hub；Rock side faces and bottom surface be set to 15MPa and
The confining pressure of 30MPa.Cutterhead and cutter hub confficient of static friction 0.15, dynamic friction coefficient 0.15, cutterhead and rock confficient of static friction 0.4,
Dynamic friction coefficient 0.35 obtains single hobboing cutter lateral force, vertical force and rolling force.Shown in hobboing cutter load and frequency statistics table 3.
3 hobboing cutter load of table and frequency statistics table
Axial force of the cutterhead along tunnel excavation direction:
Along the vertical out-of-balance force of disk:
Along the lateral out-of-balance force of disk:
The cutter head torque that rolling force generates:
In formula, the quantity of n, m, p-central hob, positive hobboing cutter, side hobboing cutter；Fτi、Fτj、Fτk(τ=v, X, Y, r)-is single
The vertical force of hobboing cutter, lateral out-of-balance force, longitudinal unbalance power, rolling force；ρτ(τ=i, j, k)-central hob, positive hobboing cutter,
Distance of the side hobboing cutter to cutter head center.In conjunction with the hobboing cutter three directional loads that single hobboing cutter obtains, cutterhead stress feelings in construction are calculated
Condition such as table 4:
4 cutterhead stress statistical form of table
Step6, which solves kinetic model and compares, changes the main driving complete machine vibration of bolt material front and back tunneling boring hard rock mole
Dynamic earthquake intensity:
Using MATLAB software, dynamics mathematical model is solved, acceleration amplitude is as shown in figs. 6-7.Acceleration mean value is such as
Shown in table 5.
Each system three-way vibration mean value of table 5
It is as shown in the table, and cutterhead subsystem, flange bolt connection subsystem, support drives subsystem vibration acceleration are adding
There is corresponding reduction after high damping alloy.Especially, the axial vibration acceleration along tunnel excavation direction is reduced more, wherein knife
Disk axial acceleration reduces 11%, and flange bolt connexon system axial vibration acceleration reduces 10%, supports drives subsystem
Axial vibration acceleration reduces 10%.It can be seen that a kind of tunneling boring hard rock mole for changing cutterhead flange bolt material of this patent
Vibration Absorption Designing method is reasonable.
Claims (1)
1. a kind of hard rock mole Vibration Absorption Designing method for changing cutterhead flange bolt material, which is characterized in that steps are as follows:
The high damping alloy material of Step1 selection damping bolt
With the part bolt in high damping alloy material bolt replacement cutterhead flange of the yield strength not less than 300MPa；
Step2 determines the arrangement of high damping alloy in flange bolt structure
Consider the problems of that bolt is uniformly distributed, bolt carries out linear transformation at interval of one group of bolt group in flange bolt structure；
Step3 establishes tunneling boring hard rock mole cutter-devices system complete machine kinetic model
Tunneling boring hard rock mole cutter-devices system is split according to the assembly relation between component, is divided into cutterhead subsystem
System, support drives subsystem and flange bolt connect subsystem；Cutterhead fission and cutter head center block form cutterhead subsystem；It is main
Bearing outer ring and headstock, which are welded as a whole, is coupled as support subsystem, pinion gear, deceleration by oil cylinder with support shield
Device, motor and inner ring gear form drives subsystem, support subsystem and drives subsystem as support drives subsystem；Flange
It is bolted subsystem and is made up of cutterhead flange, base bearing inner ring bolted-on；Support drives subsystem and cutterhead subsystem
System considers contact stiffness, damping and the spiral shell of more faying faces with concentrated quality method by flange bolt connexon system connection
Bolt pretightning force establishes tunneling boring hard rock mole cutter-devices system multiple degrees of freedom Coupled Vibration System；
Step4 determine in tunneling boring hard rock mole cutter-devices system complete machine kinetic model the equivalent stiffness of each subsystem with
Damping
Step4.1 cutterhead subsystem, support drives subsystem connect subsystem equivalent stiffness with flange bolt and pass through finite element side
Method determine, i.e., model direction apply specific loading obtain displacement cloud atlas, according to recklessly can law determine cutterhead subsystem, support
The equivalent stiffness of drives subsystem, support subsystem and flange bolt connection subsystem；
Step4.2 equivalent damping is calculated according to following formula:
In formula, ξ is damping ratio, me, keRespectively equivalent mass and equivalent stiffness；
The hobboing cutter broken rock dynamic load that Step5 calculates hobboing cutter and rock interaction generates
The numerical simulation that rock cutting is carried out to the tunneling boring hard rock tunneller hob under different mode, different geological conditions, obtains
To single hobboing cutter lateral force, vertical force and rolling force；
In conjunction with the hobboing cutter three directional loads that single hobboing cutter obtains, cutterhead stress condition in construction is calculated:
Axial force of the cutterhead along tunnel excavation direction:
Along the vertical out-of-balance force of disk:
Along the lateral out-of-balance force of disk:
The cutter head torque that rolling force generates:
In formula, the quantity of n, m, p-central hob, positive hobboing cutter, side hobboing cutter；Fτi、Fτj、Fτk(τ=v, X, Y, r)-single hobboing cutter
Vertical force, lateral out-of-balance force, longitudinal unbalance power, rolling force；ρτ(τ=i, j, k)-central hob, positive hobboing cutter, side rolling
Distance of the knife to cutter head center.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811305468.6A CN109281683B (en) | 2018-11-05 | 2018-11-05 | Vibration reduction design method for hard rock heading machine for changing bolt material at flange of cutter head |
| US16/469,112 US20200285787A1 (en) | 2018-10-31 | 2018-12-14 | Vibration reduction optimization method for host system of tunnel boring machine |
| PCT/CN2018/121013 WO2020087679A1 (en) | 2018-10-31 | 2018-12-14 | Vibration-absorption and optimization method for main machine system of tunnel boring machine |
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|---|---|---|---|
| CN201811305468.6A CN109281683B (en) | 2018-11-05 | 2018-11-05 | Vibration reduction design method for hard rock heading machine for changing bolt material at flange of cutter head |
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| CN109281683A true CN109281683A (en) | 2019-01-29 |
| CN109281683B CN109281683B (en) | 2020-08-14 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110610063A (en) * | 2019-10-21 | 2019-12-24 | 山东泰开高压开关有限公司 | Method for determining whether bolt type selection is correct |
| CN110851923A (en) * | 2019-10-18 | 2020-02-28 | 大连理工大学 | Design method of quality coordination vibration damper of main driving system of heading machine |
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