CN102182467B - Energy-saving installation method for disk-shaped hob and center hob - Google Patents

Abstract

The invention belongs to the technical field of installation of a disk-shaped hob and a center hob on a full-face rock boring machine and a shield plane cutter, and in particular relates to an energy-saving installation method for the disk-shaped hob and the center hob. The technical scheme is that: an inclined plane with an inclination angle of psi i is processed on a bearing pedestal surface of the disk-shaped hob and the center hob; and the inclination angle of psi i is calculated according to the principle that disk-shaped hob and the center hob do not slide laterally in the rock breaking process, even though the rock forward points of the disk-shaped hob and the center hob are aligned with a maximum penetration deep point of a trajectory circle. By the installation method, the rock breaking free surface of the disk-shaped hob and the center hob is enlarged, the wear extent and the consumption of the disk-shaped hob and the center hob in full-face tunnel boring machine operation are reduced, the energy consumption and the cost in the construction of the full-face tunnel boring machine are reduced, and the construction period is shortened.

Description

The energy-saving installation method of the positive cutter of disk cutter and central hob

Technical field

The invention belongs to the positive cutter of disk cutter and central hob mounting technique field, the particularly energy-saving installation method of the positive cutter of a kind of disk cutter and central hob on full face rock tunnel boring machine and the shield structure plane cutterhead.

Background technology

The positive cutter of disk cutter and the installation of central hob on cutterhead are complete in just installing on the cutterhead of complete-section tunnel boring machine plane at present, that is: the positive cutter of disk cutter and plane, central hob sword place vertical with the cutterhead face (Fig. 1).Adopt this mounting means, according to the common engineering statistics, the cutter consumption costs generally accounts for 1/5th to 1/4th of construction costs, when the geology condition is bad, as in the joint agensis or than the agensis location, the consumption costs of cutter just reach construction costs about 1/3rd and change the time that cutter spends and also will reach about 1/3rd of the duration of a project, wherein more than percent 80 of the cutter consumption since tool wear cause.Disk cutter wearing and tearing on the cutterhead of plane are mainly caused by its sideslip through theoretical calculate and correlation test proof for we, the energy-conservation installation of the positive cutter of disk cutter and central hob is that the sideslip amount with the broken rock sword of the positive cutter of disk cutter and central hob is reduced to zero mounting means, thereby prolong the positive cutter of disk cutter and central hob application life, reduce the positive cutter of disk cutter and central hob is changed number of times, the operating efficiency that improves tunnel machine also reduces its energy consumption.

Summary of the invention

For reducing the positive cutter of disk cutter and central hob wear extent and the energy consumption in when work, improve the operating efficiency of tunnel machine, the invention provides the energy-saving installation method of the positive cutter of a kind of disk cutter and central hob.

The technical solution used in the present invention is:

Be ψ at the positive cutter of disk cutter and central hob bearing seat surface processing one angle of slope _iThe inclined-plane, this angle of slope ψ _iThe basis of size is to make in the positive cutter of disk cutter and the central hob sword rock break-off process substantially not produce sideslip, invades dark point even the positive cutter of disk cutter and central hob sword connect the maximum that rock forward point faces on its locus circle, then:

${\mathrm{\Ψ}}_i=\arctan [\frac{D_i}{2p}-\sqrt{{\left(\frac{D_i}{2p}\right)}^2+\frac{d}{p}-1}];$

Wherein, d is the positive cutter of disk cutter or central hob diameter; P is the positive cutter of disk cutter or central hob pile penetration, i.e. revolution cutterhead driving amount; D _iBe that i is the locus circle diameter of the positive cutter of disk cutter or central hob; I is the integer more than or equal to 1.

Beneficial effect of the present invention is:

Adopt this mounting method to enlarge the positive cutter of disk cutter and the broken rock scope of freedom of central hob, reduce the positive cutter of disk cutter and central hob wear extent and consumption in the complete-section tunnel boring machine operation, reduce energy consumption in the complete-section tunnel boring machine construction and cost, shortening duration of a project.

Description of drawings

Fig. 1 is the schematic diagram that the positive cutter of disk cutter or central hob are just being installed;

Fig. 2 is the schematic diagram that the positive cutter of disk cutter or central hob tilt to install among the present invention;

Fig. 3 is the overall structure schematic diagram that the positive cutter of disk cutter or central hob are installed;

Fig. 4 is the schematic diagram of the positive cutter of disk cutter or central hob bearing support;

Fig. 5 is screwhole position schematic diagram on the positive cutter of disk cutter or the central hob bearing support;

Fig. 6 is the schematic diagram of facing of the positive cutter of disk cutter or central hob installation;

Fig. 7 is the schematic diagram of overlooking of the positive cutter of disk cutter or central hob installation.

Number in the figure:

The positive cutter of 1-disk cutter or central hob; The 2-carriage; The 3-cushion block; The positive cutter of 4-disk cutter or central hob bearing support; The 5-cutterhead.

The specific embodiment

The invention provides the energy-saving installation method of the positive cutter of a kind of disk cutter and central hob, the present invention will be further described below in conjunction with the drawings and specific embodiments.

Such as Fig. 2, Fig. 3 and shown in Figure 4, the positive cutter of disk cutter or central hob bearing support 4 are fixed on the cutterhead 5; At the positive cutter of disk cutter or central hob bearing support 4 cushion block 3 is set; At cushion block 3 carriage 2 and the positive cutter of disk cutter or central hob 1 are set; The bearing seat surface of the positive cutter of disk cutter or central hob 1 and cutterhead plane included angle are ψ _i

Fig. 6 and Fig. 7 are schematic diagram of the present invention.Among the figure, 0 ' is the positive cutter of disk cutter or central hob center; A is the broken rock forward point of the positive cutter of disk cutter or central hob; B be the broken rock forward point of the positive cutter of disk cutter or central hob invade by its maximum dark thirty through on projection; C is that the positive cutter of disk cutter or central hob maximum are invaded dark point; When D was the positive cutter of disk cutter or central hob plane rolling, the A point was to the maximum position of invading when dark; A ' is the broken rock forward point of the positive cutter of disk cutter or central hob; B ' is that the broken rock forward point of the positive cutter of disk cutter or central hob is being invaded the dark some projection on the radius by its maximum; F is for putting the point of the positive cutter of corresponding disk cutter or the broken rock locus circle of central hob top with the positive cutter of disk cutter or the broken rock forward of central hob; E is invading the dark some projection on the plane for the point of putting the positive cutter of corresponding disk cutter or the broken rock locus circle of central hob top with the broken rock forward of the positive cutter of disk cutter or central hob by cutter axis and the positive cutter of disk cutter or central hob maximum; 0 is the positive cutter of disk cutter or the central hob locus circle center of circle.

$\stackrel{\‾}{O^{\′}B}=\frac{d}{2}-p;$

$\stackrel{\&OverBar;}{\mathrm{AB}}=\stackrel{\&OverBar;}{A^{\&prime;}{B}^{\&prime;}}=\stackrel{\&OverBar;}{\mathrm{FE}}=\sqrt{{\stackrel{\&OverBar;}{O^{\&prime;}A}}^2-{\stackrel{\&OverBar;}{O^{\&prime;}B}}^2}=\sqrt{\mathrm{dp}-{\mathrm{<figure-callout\; id="2"\; label="p"\; filenames="HDA0000055670050000022.png,HDA0000055670050000033.png"\; state="\{\{state\}\}">p</figure-callout>}}^2};$

$\stackrel{\&OverBar;}{\mathrm{OE}}=\sqrt{{\stackrel{\&OverBar;}{\mathrm{OF}}}^2-{\stackrel{\&OverBar;}{\mathrm{EF}}}^2}=\sqrt{{\left(\frac{D_i}{2}\right)}^2+\mathrm{dp}-{\mathrm{<figure-callout\; id="2"\; label="p"\; filenames="HDA0000055670050000022.png,HDA0000055670050000033.png"\; state="\{\{state\}\}">p</figure-callout>}}^2};$

$\stackrel{\&OverBar;}{A^{\&prime;}F}=\stackrel{\&OverBar;}{B^{\&prime;}E}=\frac{D_i}{2}-\sqrt{{\left(\frac{D_i}{2}\right)}^2+\mathrm{dp}-{\mathrm{<figure-callout\; id="2"\; label="p"\; filenames="HDA0000055670050000022.png,HDA0000055670050000033.png"\; state="\{\{state\}\}">p</figure-callout>}}^2};$

Then can obtain blade face inclination angle is:

${\mathrm{\&Psi;}}_i=\arctan \frac{\stackrel{\&OverBar;}{A^{\&prime;}F}}{\stackrel{\&OverBar;}{\mathrm{AD}}}=\arctan [\frac{D_i}{2p}-\sqrt{{\left(\frac{D_i}{2p}\right)}^2+\frac{d}{p}-1}].$

In the formula:

The positive cutter of d-disk cutter or central hob diameter (mm);

D _i-Di i is the locus circle diameter (mm) of the positive cutter of disk cutter or central hob;

ψ _i-Di i is the energy-conservation established angle (rad) on cutterhead the positive cutter of disk cutter or central hob;

The positive cutter of p-disk cutter or central hob pile penetration, i.e. revolution cutterhead driving amount (mm);

-complete-section tunnel boring machine driving speed (m/s)

Specifically can adopt following manner realizes:

The positive cutter of disk cutter and central hob cutter axis areal of support are processed into inclined-plane shown in Figure 4, and all the other sizes are with the disk cutter installation dimension of using at present.

Claims (1)

1. the energy-saving installation method of the positive cutter of disk cutter and central hob is processed an inclined-plane at the positive cutter of disk cutter and central hob bearing seat surface, and this inclined-plane and cutterhead plane included angle are angle of slope Ψ _i, it is characterized in that,

This angle of slope Ψ _iThe basis of size is to make in the positive cutter of disk cutter and the central hob sword rock break-off process substantially not produce sideslip, invades dark point even the positive cutter of disk cutter and central hob sword connect the maximum that rock forward point faces on its locus circle, then:

${\mathrm{\&Psi;}}_i=\arctan [\frac{D_i}{2p}-\sqrt{{\left(\frac{D_i}{2p}\right)}^2+\frac{d}{p}-1}$ ；

Wherein, d is the positive cutter of disk cutter or central hob diameter; P is the positive cutter of disk cutter or central hob pile penetration, i.e. revolution cutterhead driving amount; D _iBe that i is the locus circle diameter of the positive cutter of disk cutter or central hob; I is the integer more than or equal to 1.

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