JP3147533B2 - Segment feeder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for supplying segments to an erector for constructing an inner wall of a tunnel.

[0002]

2. Description of the Related Art FIG. 7 shows an overall schematic view of a shield machine previously developed by the present applicant. As shown in the figure, a segment c is stretched by an erector b on the inner surface of a borehole excavated by an excavator body a, and an inner wall of a tunnel is constructed. The supply of the segment c to the erector b is performed as follows.

[0003] First, a segment c placed on a segment truck d is conveyed from the tunnel entrance to the interior of the tunnel. Then, after the excavator body a has advanced by one ring,
The segment c on the carriage d is hung by the hoist e and moved forward, and is set on the mounting table f provided behind the erecta b. Thereafter, the mounting table f is pushed out toward the erector b by the pusher g, and the segment c on the pedestal f is supplied to the erector b ...

There is also known a system in which the mounting table f and the pusher g are omitted and the segment c suspended by the hoist e is directly transferred to the erector b in the air.
.

[0005]

However, in the above system, the mounting table f and the pusher g must be provided immediately after the erector b, and the effective working space is narrowed, which is not preferable in a narrow tunnel. .

In the above system, the mounting table f
Although a pusher g and the like are not necessary, in the case of a medium-diameter shield as shown in the figure, the suspension point h of the hoist e must be shifted upward from the tunnel axis i due to space limitations. Therefore, when the excavator body a rolls and the hoist rolls around the e-axis, the segment c
, And the segment c is no longer positioned on the shield diameter. In this state, even if the erector b is rotated in the circumferential direction, the positional relationship between the erector b and the segment c is increased, and the erector b cannot grasp the segment c accurately.

SUMMARY OF THE INVENTION An object of the present invention, which has been made in view of the above circumstances, is to provide a segment supply that can accurately deliver a segment to an erector in the air, even if the suspension point of the hoist is a medium-diameter shield that is displaced from the tunnel axis during rolling. It is to provide a device.

[0008]

In order to achieve the above object, the present invention provides a method for sealing a segment moved by a hoist.
Segment supply for supplying to the
In charging device provided in engagement with the beam member disposed in the tunnel longitudinal direction, and movable sliding member along the longitudinal direction of the tunnel, provided on the sliding body, movable in the vertical direction, the shield Along with rolling the frame
A pick fork for gripping the segment to be rolled,
Receive the segment from the hoist on the pick fork
It is placed in the middle to pass and the shield
Frame to move with the rolling
And segment table provided integrally on the side, is provided on the segment <br/> cement table, before a segment from hoist
It is obtained by a positioning guide for receiving and aligning the rear left and right directions.

[0009]

[Function] A cell placed on the segment mounting table from the hoist.
Segment is supported on the left and right ends of the segment mounting table.
The positioning is performed in the front, rear, left and right directions by a positioning guide provided on the segment mounting table . The aligned segment is held at its center by a pick fork that moves up and down, is brought closer to the erector side by the slide body advancing along the beam, and is delivered from the pick fork to the erector in the air.

Here, the beam, the segment mounting table and the erector are each provided with a rolling of a shield frame.
, So that even if the shield frame rolls, their positional relationship is maintained. In other words, when rolling the shield frame, the erector also rolls as much as the segment mounting table rolls, so the segments aligned on the segment mounting table are delivered to the erector by a pick fork while maintaining the positional relationship with the erector. Will be. Therefore, regardless of the size of the shield diameter, the segments can be accurately supplied to the erector even when the shield frame rolls. After this, the pick fork retreats again
The segment aligned on the segment table.
The above-mentioned that the robot lifts up and moves forward and hands it over to Elekta
Repeat the above steps.

[0011]

An embodiment of the present invention will be described below with reference to the accompanying drawings.

FIG. 1 is a side sectional view of a shield machine equipped with a segment feeder according to the present embodiment, FIG. 2 is a plan sectional view thereof, and FIG. 3 is a sectional view taken along line III-III of FIG. In FIG.
Fig. 5 is a sectional view taken along the line VV, Fig. 6 is a sectional view taken along the line VI-V.
The sectional views along the line I are shown.

As shown in FIGS. 1 and 2, an erector 4 for assembling a segment 3 is provided in a shield frame 2 of an excavator body 1. The erector 4 has a ring body 5 that rotates concentrically with the shield diameter, and rotates the ring body 5 to rotate and move the segment 3 gripped by the gripper 6 along the inner surface of the trench. It is. The erector 4 is connected to the shield frame 2 so as to excavate integrally with the excavator body 1.

A beam member 7 is disposed substantially at the center of the tunnel along the longitudinal direction. The beam member 7 is connected to the shield frame 2 via the crossing frame 8, and is integrally excavated as the excavator body 1 excavates. As shown in FIGS. 4, 5 and 6, two beams 7 are provided in parallel. The beam member 7 is provided with a slide body 9 which engages with the beam member and moves along the front-rear direction of the tunnel. A pick fork 11 is suspended from the slide body 9 via four lifting jacks 10 provided in the square so as to be vertically movable. The pick fork 11 includes three claw members 12 having a U-shaped cross section as shown in FIG.

[0015] The intermediate <br/> hoist 23 and pick fork 11, position under the pick fork 11 as shown in FIG. 2
Segment table 13 for supporting the right and left end portions of the segments 3 are provided with location. The segment mounting table 13
The first mounting table 13a for the A and B segments 3a and 3b and the second mounting table 13b for the key segment 3k are arranged side by side. As shown in FIG. 3, the key segment 3k is a small segment that is finally fitted into the inner surface of the trench, the B segment 3b is two segments on both sides thereof, and the A segment 3a is the other three segments. Each of the segment mounting tables 13a and 13b is provided with a positioning guide 14 for positioning the segment 3 in the front-rear and left-right directions. The positioning guide 14 has a tapered shape that is arranged in a square of the mounting table 13 and spreads upward. The segment 3 that is lowered onto the mounting table 13 is guided by the tapered surface and automatically positioned in the front-rear and left-right directions. A match is made.

The segment mounting table 13 is shown in FIGS.
Is connected to the segment perfect circle holding device 15 as shown in FIG. The segment perfect circle holding device 15 has an arc-shaped pressing frame 16 pressed against the upper and lower portions of the segment 3 assembled on the inner surface of the trench, and the pressing frame 16 is pressed by the pressing jack 17 to the inside of the segment 3. ,
Until the backing material filled in the outside of the segment 3 is solidified, the segment 3 does not lose its true circular state due to earth pressure. This segment perfect circle holding device 1
Reference numeral 5 is connected to the shield frame 2 via the beam member 7 as shown in FIG. That is, the segment mounting table 13 moves together with the rolling of the shield frame 2.
And is integrally provided on the shield frame 2 side so as to excavate integrally with the excavator body 1.

A hoist beam 18 is provided in the upper part of the tunnel along the longitudinal direction. The hoist beam 18 has a front end connected to the beam member 7 and a rear end connected to a trailing bogie 19. The trailing bogie 19 runs on a rail 20 laid in a tunnel as shown in FIG. 3, and the excavator main body 1 is connected to a rope (not shown).
And is towed as the excavator body 1 excavates. The trailing bogie 19 is formed in an inverted U shape, and a segment bogie 21 is provided inside thereof.

The segment truck 21 runs on a rail 22 laid in a tunnel. The segments 3 stretched on the inner surface of the excavation hole are loaded on the segment truck 21 in the order of assembly. That is, two A segments 3a are provided on the leading bogie 21a, and the second bogie 2
1b has A segment 3a and B segment 3b, and third truck 21c has key segment 3k and B segment 3b.
Is loaded.

The operation of this embodiment having the above configuration will be described.

Segment 3 on the segment truck 21
Is suspended by a hoist 23 engaged with the hoist beam 18, moved forward of the tunnel along the beam 18, and temporarily stored in a temporary storage area 24. Specifically, in the temporary storage area 24, while the excavator body 1 is excavating, the segments 3 for one ring (6 pieces) are temporarily placed in the assembling order. In other words, temporary storage 2
Of segment 3 of 4, the first three are A segment 3
a, the next two are B segments 3b, and the last one is a key segment 3k.

After these segments 3 have been excavated by the excavator body 1 by one ring of the segment 1, the hoist 2
3 and is replaced with the segment mounting table 13. First, the A segment 3a is connected to the first mounting table 13a.
Be placed on The segments 3a whose left and right ends are supported by the first mounting table 13a are aligned in the front-rear and left-right directions by the positioning guide 14 of the mounting table 13a. As shown in FIG. 4, the aligned segment 3a is lifted at its center by a pick fork 11 that moves up and down, and the slide body 9 moves forward along the beam member 7 to approach the erector 4 side. It is delivered from the pick fork 11 to the electa 4 in the air.

Here, the beam 7 and the segment mounting table 1 are used.
3a and the erector 4 are the shield frame 1 respectively.
Is provided so as to be integrally rolled around the axis of the shaft, so that even if the shield frame 2 is rolled,
Also, its those of the positional relationship is maintained. In other words, during rolling of the shield frame 2, since the segment table 13a is also rolled by Elekta 4 min with rolls, segment 3a that is aligned on the segment table 13a is while maintaining the positional relationship erecta 4 erecta 4 will be delivered. Therefore, even if the shield frame 2 rolls, the segment 3a can be supplied to the erector 4 accurately. Therefore, as shown in the example of FIG.
Even if the suspension point HC is a medium-diameter shield that deviates from the tunnel axis TC (see FIG. 4), the segment 3a can be accurately delivered to the erector 4 in the air, and the automatic supply of the segment 3a to the erector 4 can be promoted. The A segment 3a gripped by the erector 4 is fitted into a predetermined assembly location.

After the A segment 3a is supplied to the erector 4 in this manner, the remaining two A segments 3
is supplied to the erector, and the B segment 3b is similarly processed. The last key segment 3k is replaced from the temporary storage area 24 to the second mounting table 13b, and is similarly processed after being positioned in the front-rear and left-right directions by the positioning guide 14 of the second mounting table 13b. At this time, key segment 3
Since k is small, as shown in FIG.
Of the three pawl members 12 constituting the central pawl member 12a
You will only be held up.

[0024]

As described above, according to the present invention, the following excellent effects can be exhibited.

(1) Rolling of the shield frame
The segment's position with respect to the
In addition, the segments can be accurately delivered to the erector in the air, and the automatic supply of the segments can be promoted.

(2) There is no need to provide a mounting table or a pusher as a segment supply device immediately after the erector,
A large work space can be secured in the tunnel.

[Brief description of the drawings]

FIG. 1 is a side sectional view of a shield machine equipped with a segment supply device according to an embodiment of the present invention.

FIG. 2 is a plan sectional view of a shield machine equipped with the segment supply device.

FIG. 3 is a sectional view taken along line III-III of FIG. 1;

FIG. 4 is a sectional view taken along the line IV-IV of FIG. 1;

FIG. 5 is a sectional view taken along line VV of FIG. 1 and FIG.

FIG. 6 is a sectional view taken along the line VI-VI of FIG. 1;

FIG. 7 is an overall schematic diagram of a shield machine previously developed by the present applicant.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Excavator main body 2 Shield frame 3 Segment 4 Electa 7 Beam material 9 Slide body 11 Pick fork 13 Segment mounting table 14 Positioning guide

Claims (1)

(57) [Claims] 1. A segment supply device for supplying a segment moved by a hoist to an erector in a shield frame, the segment supply device being provided in engagement with a beam material arranged in a longitudinal direction of the tunnel, and extending along a longitudinal direction of the tunnel. And a movable slide body, provided on the slide body, movable vertically , together with the rolling of the shield frame.
A pick fork for gripping the segment to be rolled,
Receive the segment from the hoist on the pick fork
It is placed in the middle to pass and the shield
Frame to move with the rolling
Segment mounting table integrally provided on the side , and a segment from the hoist provided on the segment mounting table,
Segment feeding apparatus being characterized in that example Bei a positioning guide for receiving and aligning in the lateral direction.