JP3285335B2 - Segment assembly method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a segment assembling method for assembling a tunnel lining segment carried into a shield machine.

[0002]

2. Description of the Related Art A conventional ring-type erector (hereinafter, referred to as a conventional erector) as shown in FIGS. 18 and 19 has been used for assembling segments of a conventional multiple shield tunnel. FIG. 20 shows a segment for one ring used in a double shield tunnel, and is a standard segment 1 in the form of an arc forming left and right pseudo circular portions.
a, upper and lower key segments 1b and 1c having a V-shaped cross-section for joining the left and right pseudo-circular portions, and a post segment 1d inserted into the center portion; Long key segment 1c
By assembling them alternately, the segments are assembled such that the joint positions are shifted in a staggered manner. 18 and 19, two left and right erectors 3A and 3B installed at the rear part of the shield main body 2 are guided by guide rollers 5 arranged along the inner periphery of the shield main body 2, respectively. An elector ring 4 pivotally driven by a pivoting motor 6 via a pinion 7 and a ring gear 8, a pair of left and right elector arms 9 projecting rearward of the shield body 2 from the elector ring 4, A gate-shaped suspension beam 10 having two left and right guide rods 11 penetrating the elector arm 9 and being slid in the radial direction of the elector ring 4 by a pressing jack 12 mounted on the elector arm 9; 1
The slider 15 has a segment gripper 16 which is supported at a center portion of the slider 0 via a slider guide 13 and is slid in the axial direction of the elector ring 4 by a front-rear sliding jack 14 mounted on the suspension beam 10. The segments 1a, 1b, 1c, and 1d shown in FIG. 20 are lifted one piece at a time by using these two erectors 3A and 3B, and transported to a predetermined assembly position. The bolts are sequentially tightened to assemble the segment ring 1 shown in FIG.

[0003]

However, the conventional erector shown in FIGS. 18 and 19 is suitable for assembling the arc-shaped standard segment 1a, but has key segments 1b and 1c having a V-shaped cross section and a column segment. It is not suitable for assembling odd-shaped segments such as 1d. One of the reasons is, as shown in FIG. 18, the key segments 1b and 1c and the pillar segments 1d to be assembled.
Are placed under the erector to allow the slider 15 of the erector to grip them, these segments 1b, 1c, 1d
Is higher than the standard segment 1a, and the segment cannot be gripped unless the position of the slider 15 is raised toward the center of the erector ring 4 by that amount. When the position of the slider 15 is raised, the inner space 1 of the erector surrounded by the erector ring 4, the erector arm 9, and the suspension beam 10 in FIG.
7 becomes narrow, and it becomes impossible to secure a space for passing a soil discharging device (a screw conveyor 18 or a feeding and discharging mud pipe) of a shield excavator and a work deck 19 for assembling a segment.

The present invention has been made to solve the above-mentioned problems of the prior art, and corresponds to segments of various shapes used for multiple shield tunnels and the like. An object of the present invention is to provide a segment assembling method capable of easily and quickly assembling segments on a flat plate.

[0005]

In order to achieve the above object, according to the first aspect of the present invention, a tunnel lining segment carried into a shield machine is rotated into a shield body. Elector ring supported so as to be possible, Electa arm supported by this Elector ring, and guide rod penetrating through this Electa arm
And a pressing beam provided on one end side of the guide rod, one side of the guide rod and the other side of the guide rod.
A pressing jack attached to a beam and capable of moving the pressing beam substantially tangentially to the erector ring ;
Gripping a swing arm in which the swingably supported by the pressing beam to the erector plane perpendicular to the axis direction of the ring, the segments provided with bracing jack provided on the swing arm to the bracing jack In a segment assembling method of assembling using an erector device having a segment holding portion to be segmented and a plurality of segment steady rests arranged around the segment holding portion and having a segment holding device for detachably holding a segment, The segment hanging tool provided on the segment and the segment gripping part are connected, the steady rest jack is contracted to retract the segment gripping part, and the flat plate segment is brought into contact with the segment steady rest, After holding the flat segment so as to be perpendicular to the pressing jack, The electoring ring is turned to make the position of the plate-shaped segment vertical, and then, by extending the pressing jack, the plate-shaped segment is mounted between the lower key segment and the upper key segment which are installed in advance. I made it.

Further, in the invention according to claim 2,
The tunnel lining segment carried into the shield machine is connected to an erector ring rotatably supported in the shield body, an erector arm supported by the erector ring, and a guide lock penetrating through the erector arm.
And a pressing beam provided at one end of the guide rod, one side of the guide rod and the other side of the guide rod.
A pressing jack attached to a mounting beam and capable of moving the pressing beam substantially in a tangential direction of the electoring ring.
When the swing arm swingably supported by the pressing beam to the erector plane perpendicular to the axis direction of the ring, provided the steadying jack provided on the swing arm to the bracing jack segments A segment holding device for holding a segment detachably, comprising a segment gripper for gripping a plurality of segment steady rests arranged around the segment gripper, and a position control jack for controlling the tilt of the swing arm. In the segment assembling method for assembling using the erector device provided with the erector device, the posture control jack swings so that the segment contact surfaces of the plurality of segment steady rests provided on the swing arm are substantially perpendicular to the pressing jack. After controlling the angle of the moving arm, the segment hanger provided on the plate-shaped segment and the And the segment grip is contracted, the steady rest jack is contracted, the segment is pulled in, the flat segment is brought into contact with the segment steady rest, and the flat segment is perpendicular to the pressing jack. After that, the electoring ring is turned to make the posture of the plate-shaped segment vertical, and then the plate-shaped segment is moved between the lower key segment and the upper key segment previously set by the extension of the pressing jack. To be mounted on.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention applied to a double shield machine will be described below with reference to FIGS. The segments to be assembled include a standard segment 1a, an upper and lower key segment 1b,
1c and a support segment 1d. FIG.
In FIG. 4 to FIG. 4, the left and right erectors 20A and 20B installed behind the shield main body 2 have the same structure, and corresponding parts are denoted by the same reference numerals.

The elector ring 21 is guided by a guide roller 22 disposed along the inner periphery of the shield main body 2, and a ring gear 25 is attached to the elector ring 21. A pinion 24 that meshes with a ring gear 25 is attached to a turning motor 23 provided in the shield body 2. Therefore, the operation of the turning motor 23 causes the electoring ring 21 to turn.

The erector arm 26 includes the erector ring 2
At a position on one side of the upper turning center 1, it is provided to protrude rearward of the shield body 2. The counterweight 27 is attached to the erector ring 21 so as to balance the rotation of the erector ring 21.

The erector arm 26 has a pressing beam 28
Are slidably penetrated, and the pressing beam 28 is guided by the two guide rods 29 and is prevented from rotating. The pressing beam 28 is a box-shaped structure, and is arranged obliquely with respect to the guide rod 29 so as to follow a part of the circumference of the erector ring 21.

The cylinder side of the pressing jack 30 is attached to the elector arm 26, and the rod side is a pressing beam 28.
The pressing jack 30 causes the pressing beam 28 to slide substantially tangentially with respect to the circumference of the erector ring 21.

The swing arm 31 is swingably attached to the tip of the pressing beam 28 via a swing pin 32. The pressing beam 28 includes two front and rear attitude control jacks 3.
3 are equipped. The cylinder side of each attitude control jack 33 is attached to the bracket 28 a of the pressing beam 28, and the rod side is attached to the bracket 31 a of the swing arm 31.

Accordingly, the swing arm 31 is swung about the swing pin 32 by the attitude control jack 33, and swings with respect to the pressing beam 28 in a plane perpendicular to the axial direction of the erector ring 21. Can be changed over a wide range.

The slider 34 is guided by a slider guide 35 provided on the swing arm 31, as shown in FIGS. The ring 21 is slid in the axial direction.

The steady rest jack 37 mounted on the slider 34 has a segment in which the rod side is attached to the slider 34 bracket 34a and which has a pin hole 38a at the cylinder end guided by the cylindrical guide portion 34b of the slider 34. A grip 38 is provided. In addition, the slider 34 is provided with segment wobble stoppers 34c protruding toward the segment side at four locations surrounding the segment grip portion 38.

When the slider 34 grips the segment, the pressing jack 30 and the attitude control jack 33 are operated according to the type of the segment and the height at which the segment is placed, and the height and inclination of the swing arm 31 are adjusted. At the same time, the position of the elector ring 21 in the axial direction is adjusted by the front-rear sliding jack 36.

FIG. 1 shows a lower key segment 1 as an example.
3 shows a state in which c is held and lifted. After the hanging pin 39 is inserted into the pin hole of the hanging metal fitting attached to the segment and the pin hole 38a of the segment gripping portion 38, the steady rest jack 37 is contracted, and the segment gripping portion 38 is pulled in. The slider 34 is fixed to the slider 34 in close contact with the four steady rests 34c. Then, the grasped segment is moved to the turning motor 2.
3. The pressing jack 30, the attitude control jack 33, and the front-rear sliding jack 36 transport and assemble to a predetermined assembly position.

FIGS. 5 to 15 are process diagrams showing an assembling process for one segment ring. As shown in FIG. 5, when the lower key segment 1c is supplied to the right bottom surface of the shield main body 2, the right erector 20A operates to rotate the erector ring 21 by a predetermined angle.
The pressing jack 30 moves the pressing beam 28 in the tangential direction of the erector ring 21 from the state of the left erector 20B, and the attitude control jack 33 swings the swing arm 31 to move the slider 21 in the required direction. The slider 34 is moved closer to the lower key segment 1c.

In this state, the segment holding portion and the hanging bracket are connected by a pin, the steady rest jack is contracted, and the lower key segment 1c is brought into close contact with the slider 34 and held.

As shown in FIG. 6, the pressing jack 30 is contracted to raise the pressing beam 28, and the lower key segment 1c
Hoist.

As shown in FIG. 7, the electrer ring 21 is rotated to convey the lower key segment 1c to its assembling position, the pressing jack 30 is extended, the attitude control jack 33 is contracted, and if necessary, The lower key segment 1c is positioned at the mounting position by the moving jack 36, and is fixed to the existing segment ring by fastening means such as bolts.

In this state, the steady rest jack is extended, the close contact between the lower key segment 1c and the slider 34 is released, the pin connecting the segment holding portion and the hanging metal is removed, and the lower key segment 1c is opened.

As shown in FIG. 8, the lower key segment 1
When c is positioned at the assembling position, the standard segments 1a are supplied to the left and right bottom surfaces of the shield body 2. Then, the left and right erectors 20A, 20B operate simultaneously to rotate the erector ring 21, and then the pressing jack 30 moves the pressing beam 28 in the tangential direction of the erector ring 21 to move the slider 34 to the standard segment 1a.
Close to.

In this state, the segment holding portion and the hanging bracket are connected with a pin, the steady rest jack is contracted, and the standard segment 1a is brought into close contact with the slider 34 and held.

As shown in FIG. 9, the pressing jack 30 is contracted, and the standard segment 1a is lifted by the amount of the tail clearance. Then, if necessary, the attitude control jack 3
3. Standard segment 1a by front and rear sliding jack 36
Is corrected, and the contact surface between the lower key segment 1c of the standard segment 1a and the existing segment ring is fixed by fastening means such as bolts, and the standard segment 1a is assembled.

In this state, the steady rest jack is extended, the close contact between the lower key segment 1c and the slider 34 is released, the pin connecting the segment holding portion and the hanging metal is removed, and the standard segment 1a is opened.

As shown in FIG. 10, the second and subsequent standard segments 1a are supplied on the already assembled segments. The newly supplied standard segments 1a are sequentially assembled as shown in FIGS. 11 and 12 by the same operation as the above-described standard segments 1a.

As shown in FIG. 12, the standard segment 1a
Is completed, the right erector 20A stands by while supporting the standard segment 1a assembled last. On the other hand, the left erector 20B has an upper key segment 1b on the already assembled standard segment 1a.
Is supplied. Then, in the same manner as in the case of the lower key segment 1c, the slider 34 grips the upper key segment 1b. In this state, the pressing jack 30 is operated to lift the upper key segment 1b.

As shown in FIG.
Is rotated to transport the upper key segment 1b to the assembling position. Then, the posture and position of the upper key segment 1b are corrected by the pressing jack 30, the posture control jack 33, and the front-rear sliding jack 36 as necessary, so that the upper key segment 1b is located between the left and right standard segments 1a. The key segment 1b is mounted.

In this state, the upper key segment 1b is fixedly attached to the existing segment ring and the left and right standard segments 1a. When the assembly of the upper key segment 1b is completed, the right erector 20A releases the support of the standard segment 1a assembled last. On the other hand, the left erector 20B stands by while supporting the upper key segment 1b.

[0031] As shown in FIG.
A is supplied with the column segments 1d on the already assembled standard segments 1a. At this time, the attitude of the swing arm 31 is controlled by the attitude control jack 33 so that the pressing jack 30 and the segment contact surface formed by the plurality of segment steadying members 34c are at right angles.

The segment hanging member 41a of the column segment 1d and the segment holding portion 38 of the slider 34
Are combined and the steady rest jack 37 is contracted, the segment grip 38 is retracted.

When the column segment 1d is lifted up and comes into contact with the segment swing stopper 34c, the column segment 1d is held at a right angle to the pressing jack 30. Strut segment 1d thus held
Is fixed to the bracket 34a, which is a fixed object, via the segment steadying member 34c, so that its posture is stable and does not swing.

Thereafter, as shown in FIG. 15, the erector ring 21 is rotated, and the column segment 1d is transported to the assembling position. At this time, since the strut segment 1d maintains a state perpendicular to the pressing jack 30, if the pressing jack 30 is made horizontal, the strut segment 1d will maintain a vertical state. In this state, the pressing jack 30 is extended, and the column segment 1d is mounted between the lower key segment 1c and the upper key segment 1b.

As described above, the segment ring 1 shown in FIG.
Is completed.

As described above, in the segment assembling method using the erector device shown in the present embodiment, the segment holding portion 38 for holding the segments 1a to 1d and the plurality of segments arranged around the segment holding portion 38 Since the strut segment 1d is held by the segment holding device that is composed of the steady rest 34c and detachably holds the segment, the strut segment 1d is stably held.
Can be held.

Therefore, before gripping the column segment 1d, the column segment 1d
Can be set so that the angle between the contact surface and the pressing jack 30 is a right angle. That is, if the column segment 1d is gripped in the right-angled state, the pressing jack 30 and the column segment 1d are held at a right angle.

As a result, the column segment 1d can be assembled simply by extending the pressing jack 30 without performing complicated positioning control when assembling the column segment 1d, so that the segment can be assembled quickly and easily. .

FIGS. 16 and 17 show a form of a segment hanging tool used when it is desired to push the center of the column segment 1d during assembly. That is,
In consideration of transportation, the position of the pin hole provided substantially at the center in the longitudinal direction of the column segment 1d is shifted to a position where the segment grip portion 38 of the elector device can be easily gripped. It is designed to be hung on the central portion of the pillar segment 1d via the hanging tool 41.

One end of the segment hanging member 41 is connected to a bolt 42
Then, the support segment 1d may be attached to the center of the support segment 1d, and the support segment 1d may be gripped by passing the suspension pin 39 shown in FIG. 1 into a pin hole 41a provided at the other end.

By using the segment hanging tool 41, it is possible to adjust the pin hole 41a to a position where the support segment 1d can be gripped so that the support segment 1d and the pressing jack 30 are maintained at a right angle. Even when the support segment 1d is gripped by using the segment suspender 41, the periphery of the pin hole 41a of the segment suspender 41 is pressed by the steady rest 34c as shown in FIG. It can be gripped in a state where it is held.

In the above description, the method of assembling the column segments of the multiple shield tunnel has been described. However, the present invention is also applicable to a case where a flat segment is assembled.

[0043]

As described above, according to the present invention, a flat segment can be turned and conveyed to the assembling position while being held at a right angle to the pressing jack. Can be assembled in that assembly position.

As a result, the work of assembling the plate-like segments becomes easy and quick, and the work efficiency of tunnel lining can be improved.

[Brief description of the drawings]

FIG. 1 is a front view of an elector device according to the present invention as viewed from a shield main body tail side.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a view taken in the direction of arrow B in FIG. 2;

FIG. 4 is a sectional view taken along line CC of FIG. 2;

FIG. 5 is a process chart showing a segment assembling process.

FIG. 6 is a process diagram showing a segment assembling process.

FIG. 7 is a process diagram showing a segment assembling process.

FIG. 8 is a process diagram showing a segment assembling process.

FIG. 9 is a process diagram showing a segment assembling process.

FIG. 10 is a process diagram showing a segment assembling process.

FIG. 11 is a process diagram showing a segment assembling process.

FIG. 12 is a process diagram showing a segment assembling process.

FIG. 13 is a process diagram showing a segment assembling process.

FIG. 14 is a process chart showing a segment assembling process.

FIG. 15 is a process chart showing a segment assembling process.

FIG. 16 is a front view showing another embodiment of the segment hanger in FIG. 4;

FIG. 17 is a plan view of FIG. 16;

FIG. Conventional shield machine
FIG.

FIG. The DD sectional view of FIG.

FIG. Shows the assembly status of the double shield segment
FIG.

[Explanation of symbols]

 1b Upper key segment 1c Lower key segment 1d Strut segment (flat segment) 2 Shield body 20A, 20B Electoring 21 Electoring 26 Elector arm 28 Pressing beam 30 Pressing jack 31 Swing arm 33 Attitude control jack 34 Slider 34c Segment swing Stopper 37 Steady-stop jack 38 Segment gripper 41 Segment suspender

──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Yasuo Mori 650, Kandamachi, Tsuchiura-shi, Ibaraki Hitachi Construction Machinery Co., Ltd. Inside the Tsuchiura Plant (72) Inventor Hitoshi Takahashi 650, Kanda-machi, Tsuchiura-shi, Ibaraki Hitachi Construction Machinery Tsuchiura Works (56) References Hikaru 2-116599 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) E21D 11/40

Claims (3)

(57) [Claims] An erector ring rotatably supported in a shield body, an erector arm supported by the erector ring, and an inner wall of the erector arm. Penetrate
Guide rod and one end of the guide rod
A pressing beam, one side to said erector arm, other
A pressing jack mounted on one side to the pressing beam and capable of moving the pressing beam substantially in a tangential direction of the electoring ring; and a right angle to the pressing beam at right angles to an axial direction of the elector ring. A swing arm supported to be swingable in a plane, a steady rest jack provided on the swing arm, a segment grip portion provided on the steady swing jack for gripping a segment, and arranged around the segment grip portion; In a segment assembling method of assembling using an erector device including a plurality of segment steady rests and a segment holding device for detachably holding a segment, a segment hanging tool provided on a flat segment and the segment gripper are provided. Part, and retracts the steady rest jack, pulls in the segment gripping part, and After the segment is brought into contact with the segment steady rest and the flat plate segment is held at a right angle to the pressing jack, the erector ring is turned to make the posture of the flat plate segment vertical,
Thereafter, the plate-like segment is attached between a lower key segment and an upper key segment, which are provided in advance, by extending the pressing jack. 2. A segment for tunnel lining carried into a shield machine, an erector ring rotatably supported in a shield body, an erector arm supported by the erector ring, and an inner portion of the erector arm. Penetrate
Guide rod and one end of the guide rod
A pressing beam, one side to said erector arm, other
A pressing jack mounted on one side to the pressing beam and capable of moving the pressing beam substantially in a tangential direction of the electoring ring; and a right angle to the pressing beam at right angles to an axial direction of the elector ring. A swing arm supported to be swingable in a plane, a steady rest jack provided on the swing arm, a segment grip portion provided on the steady swing jack for gripping a segment, and arranged around the segment grip portion; A segment holding device that is composed of a plurality of segment steady rests and holds the segment detachably, and a segment assembling method for assembling using an erector device including an attitude control jack that controls the tilt of the swing arm. The segment contact surfaces of the plurality of segment steady rests provided on the swing arm are substantially perpendicular to the pressing jack. After controlling the angle of the swing arm by the attitude control jack as described above, the segment hanging tool provided on the plate-shaped segment is connected to the segment gripping portion, the steady rest jack is contracted, and the segment is retracted. After the flat plate segment is brought into contact with the segment steady rest, the flat plate segment is held at a right angle to the pressing jack, and then the electoring ring is turned to set the position of the flat plate segment. A vertical segment, and thereafter mounting the flat plate segment between a lower key segment and an upper key segment which are previously set by extending the pressing jack. 3. The segment assembling method according to claim 1, wherein the segment contact surfaces of the plurality of segment steady rests are substantially perpendicular to the pressing jack on the flat segment. A segment hanger that can be adjusted so that the position of the pin hole of the segment hanger matches the position of the segment gripper when the angle of the swing arm is controlled, and the flat segment is already provided as an assembly segment. A segment assembling method characterized by being mounted before being supplied onto a segment.