JPH0791196A - Segment feeder - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a segment supply device which shortens the segment supply time and the segment waiting time. [Structure] Segment 3 conveyed by hoist 10
In the segment supply device for supplying the electric charge to the erector 4, the unloading position 14 of the hoist 10 and a predetermined distance L
A mounting table 16 on which a plurality of segments 3 of at least one ring or more are mounted in an annular shape is provided between the remote loading position 15 of the erector 4, and each segment 3 is mounted on the mounting table 16.
It is characterized in that a circulating carriage 20 is provided for independently supporting and circulating.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a segment supply device for supplying a segment to an erector that constructs an inner wall of a tunnel.

[0002]

2. Description of the Related Art As shown in FIG. 3, a segment c is stretched by an erector b on the inner surface of a hole excavated by a shield machine a to construct an inner wall of a tunnel. Conventionally, the supply of the segment c to the erector b has been performed as follows.

First, the segment c placed on the segment carriage d is conveyed from the tunnel entrance to the tunnel interior. Then, after the excavator a digs one ring of the segment c, the segment c on the segment carriage d is hung by the hoist e and moved forward, and is set in the supply device f provided behind the erector b. . After that, the segment c of the supply device f is moved by the pusher g to the elector b.
Segment toward the erector b.
Supply is achieved.

[0004]

However, in the system as described above, when the segments c are supplied to the erector b, the segments c on the segment carriage d are hung by the hoist e and supplied one by one. Since it is set in the device f, for example, in the case of the segment c of 1 ring 6 pieces, the hoist e has to be reciprocated 6 times between the segment carriage d and the supply device f, and the supply time of the segment c becomes long. Therefore, the construction period is delayed.

Further, the segment carriage d must wait until all the segments c on the segment carriage d are delivered to the erector b by the hoist e and the supply device f,
The waiting time of the segment carriage d that travels back and forth between the tunnel entrance and the tunnel interior becomes long. That is,
The segment carriage d cannot be returned to the tunnel entrance unless all the segments c placed on it are supplied to the erector b. Therefore, the operation schedule of the segment carriage d is restricted, which is disadvantageous especially in long-distance construction.

An object of the present invention, which has been devised in view of the above circumstances, is to provide a segment supply device which shortens the segment supply time and the segment carriage waiting time.

[0007]

In order to achieve the above-mentioned object, the present invention provides a segment supply device for supplying a segment carried by a hoist to an erector.
A mounting table on which a plurality of segments of at least one ring or more are mounted in an annular shape is provided between the hoist unloading position and the erector receiving position separated from the hoist by a predetermined distance, and each segment is mounted on the mounting table. It is characterized by the provision of a circulating carriage that supports and circulates independently.

[0008]

The segments discharged from the hoist to the mounting table are circulated on the mounting table by the circulation carriage and sequentially loaded on the erector side. In this way, a plurality of segments of at least one ring or more are annularly placed on the mounting table in the order of assembly. Then, the segments thus stored are sequentially and continuously supplied to the erector. This greatly reduces the segment supply time.

Further, the segment on the segment truck that has traveled from the tunnel entrance side is supplied to the hoist.
Since it is possible to collectively mount a plurality of segments equal to or more than the ring, it is possible to replace all the segments on the segment carriage on the mounting table. Therefore, the emptied segment trolley can be quickly returned to the tunnel entrance side, and the operation schedule of the segment trolley becomes easier.

Further, when the segments placed on the mounting table are damaged or when the assembly order of the segments is changed, the circulating cart circulates each segment as appropriate to return the damaged segments or change the assembly order. I do.

[0011]

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

As shown in FIGS. 1 and 2, in the shield frame 2 of the shield machine 1, an erector 4 for assembling the segments 3 is provided. The erector 4 includes a ring body 5 that rotates concentrically with the shield diameter, and a ring body 5
The telescopic support column 6 attached at right angles to the center of the arm, the arm 7 attached to the tip of the telescopic support column 6 and moving in the radial direction, and attached to the end of the arm body 7 to substantially grip the segment 3. Gripping part 8
It consists of

A hoist 10 for transporting the segment 3 on the segment truck 9 traveling from the tunnel entrance side to the front is provided behind the erector 4. The hoist 10 includes a moving body 12 that moves by engaging with a hoist beam 11 arranged along the longitudinal direction of the tunnel, and a hook 13 that is hung from the moving body 12 and hooks the segment 3. On the other hand, the segment trolley 9 has a two-car train, and one segment of this segment 3
Can be posted. Specifically, a total of six segments 3 are mounted on each carriage 9, three in total. The segment carriage 9 of the two-car train reciprocates between the tunnel entrance and the tunnel back.

Between the unloading position 14 of the hoist 10 and the unloading position 15 of the erector 4 which is separated from the hoist 10 by a predetermined distance L, a plurality of segments 3 of at least one ring or more are placed in a ring shape on a mounting table 16. Are arranged. In this embodiment, one ring of segment 3 is placed on the mounting table 16.
Since 6 are mounted, 6 segments 3 can be mounted. The mounting table 16 is formed as a track-type track-type, and has an outer loop guide 17 having a wall shape of a predetermined height at its outer edge and a similar inner loop guide 18 at its inner edge. The circulation path 19 surrounded by the outer and inner loop guides 17 and 18 is provided with six circulation carriages 20 that each segment 3 independently supports and circulates in the circulation path 19.

The circulating carriage 20 has a pinion (not shown) which meshes with a rack (not shown) provided on the outer or inner loop guides 17, 18 along the circumferential direction thereof. The pinion is designed to be self-propelled in the circulation path 19. The self-propelled method of the circulating carriage 20 is not limited to this, for example, the wheels 25 of the carriage 20 are rotated and moved forward, and the loop guides 17, 1 are provided on both sides of the carriage 20.
It is also possible to provide a guide roller that comes into contact with 8 and changes the traveling direction. A turntable 21 that supports the segment 3 and rotates the segment 3 is provided on the upper surface of the circulation cart 20. In the figure, 22 is a shield jack that abuts on the existing segment 3 to propel the excavator 1 with its reaction force, 23 is a pulling wire that pulls the mounting table 16 as the excavator 1 moves forward, and 24 is a mounting table. The rollers 16 and 25 are wheels of the circulating carriage 20.

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

The six segments 3 for one ring are placed on the segment carriage 9 of the two-car train and conveyed from the tunnel entrance to the back of the tunnel. Then, the hoist 10 is sequentially suspended, transported forward, rotated by 90 degrees, and then unloaded at the unloading position 14 on the rearmost circulating carriage 20 of the mounting table 16. This segment 3 is a circulating truck 2
When the vehicle travels 0, it is circulated in the circulation path 19 on the mounting table 16 and sequentially loaded on the erector 4 side. At this time, due to the traveling direction of the circulating carriage 20, the horizontally placed segment 3 is automatically placed in the vertically placed state. In this way, the six segments 3 for one ring are annularly placed (stored) on the mounting table 16 in the order of assembly.

Then, the segments 3 stored on the mounting table 16 are sequentially and continuously supplied to the erector 4 by circulating the circulation carriage 20. That is, the erector 4 extends the telescopic support pillar 6 to hold the grip portion 8
Is extended to the load receiving position 15, and the segment 3 on the circulating carriage 20 located at the top of the mounting table 16 is gripped. At this time, when the yaw angle of the segment 3 deviates from the grip portion 8, it is corrected by rotating the turntable 21. After that, the telescopic support column 6 is contracted to draw the grasped segment 3 to the segment assembly position shown by the broken line, the ring body 5 is rotated to move in the circumferential direction, and the arm body 7 is operated to move in the radial direction to obtain the desired position. The segment 3 is fitted in the assembly position of.

As described above, since the segment 3 for one ring is stored immediately after the elector 4, as shown in FIG.
As shown in (3), the segment supply time can be significantly shortened as compared with the conventional supply device in which the segments c on the segment carriage d are supplied to the erector b one by one via the hoist e and the supply device f. Further, since the segment 3 can be continuously supplied, it is suitable for high-speed construction such as the simultaneous excavation method in which the propulsion of the excavator 1 and the assembly of the segment 3 are simultaneously performed.

Further, the six segments 3 on the segment carriage 9 traveling from the tunnel entrance side are sequentially supplied to the hoist 10, but in the present embodiment, the above-mentioned mounting table 16 is used. 6 segments for 1 ring 3
Since all of the segments 3 on the segment carriage 9 can be mounted on the mounting table 16 because they can be collectively mounted. Therefore, the emptied segment carriage 9 can be quickly returned to the tunnel entrance side, and the operation schedule of the segment carriage 9 that reciprocates in the tunnel becomes easy. That is, the waiting time of the segment cart 9 can be shortened.

When the segments 3 placed on the mounting table 16 are damaged or the order of assembling the segments 3 is changed, the circulation cart 20 appropriately circulates the respective segments 3. That is, the damaged segment 3 is moved to the rearmost position of the mounting table 16 by the circulation carriage 20 supporting the damaged segment 3 and returned to the segment carriage 9 by the hoist 10. When changing the assembly order of the segments 3, the circulation carriage 20 on which the segments 3 are mounted is appropriately circulated clockwise or counterclockwise. The deflection of the direction (yaw angle) of the segment 3 is performed by rotating the turntable 21 of the circulation carriage 20 on which the segment 3 is placed.

[0022]

As described above, the segment feeding device according to the present invention can exert the following excellent effects.

(1) The segment supply time can be shortened.

(2) The waiting time of the segment truck can be shortened.

(3) The damaged segment can be returned and the assembly order can be changed.

[Brief description of drawings]

FIG. 1 is a plan view of a segment supply device showing an embodiment of the present invention.

FIG. 2 is a side view of the segment supply device.

FIG. 3 is a side view of a segment supply device showing a conventional example.

[Explanation of Codes] 3 segment 4 Electa 10 Hoist 14 Unloading position 15 Receiving position 16 Placement table 20 Circulating trolley L Predetermined distance

Claims (1)

[Claims] 1. A segment supply device for supplying a segment transported by a hoist to an erector, wherein at least one ring or more is provided between the hoist unloading position and the erector receiving position separated from the hoist by a predetermined distance. The segment supply device is provided with a mounting base on which a plurality of segments are mounted in an annular shape, and a circulating carriage for independently supporting and circulating each segment is provided on the mounting base.