JPH0713439B2 - Segment assembly equipment - 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 assembly device for assembling a shield segment used for tunnel excavation of a tunnel.

[0002]

2. Description of the Related Art Conventionally, when assembling segments in a tunnel excavated by a shield machine, segment pieces (hereinafter referred to as pieces) are assembled one by one from the lower surface.

On the other hand, in Japanese Patent Laid-Open No. 2-266100, all pieces or a plurality of pieces are held by an erector,
A technique is disclosed in which these pieces are expanded to a predetermined diameter by an erector and assembled in a ring shape to improve the assemblability.

[0004]

SUMMARY OF THE INVENTION In the above technology,
Hold a plurality of pieces in the eclectic shape in a circle, hold the remaining pieces radially inward of these circles, expand the pieces held in the circle to a predetermined diameter, and then The remaining pieces are inserted so that one ring can be assembled.

Therefore, the structure and assembling operation of the erector become complicated.

An object of the present invention is to provide a segment assembling apparatus having a simple structure and simple assembling operation.

[0007]

According to the present invention, a spindle provided on the axis of the rear part of the shield machine, a main body surrounding the spindle and movable in the axial direction, and a moving device for moving the main body. And a slewable gantry surrounding the main body, a slewing device for slewing the gantry, a plurality of pairs of arms radially erected from the gantry, and the pair of arms undulating in opposite directions alternately. A jack and a segment gripping device that connects the outer ends of the pair of arms in the radial direction and constitutes a parallel link mechanism together with the arm and the mount are provided.

The moving device is preferably composed of a rack provided along the support shaft, a pinion and a pinion drive motor provided on the main body.

Further, it is preferable that the turning means comprises a ring gear provided on the main body and a pinion and a pinion drive motor provided on the mount.

Further, it is preferable to use a piece in which one ring is divided into an even number of pieces and the developed plane shape of each piece is formed into a trapezoid.

[0011]

In the segment assembling apparatus constructed as described above, at the time of assembling, every other pair of arms is laid down on the tunnel side and the face side, and the piece is placed on the tunnel side gripping device so that the lower bottom is on the tunnel side. And the piece is gripped by the gripping device on the cutting face side such that the lower bottom is on the cutting face side.
Next, the pair of arms on the tunnel side are raised to expand each piece to a predetermined diameter. Next, the pair of arms on the face side are raised, and each piece is expanded into a predetermined diameter and inserted into the gap between the pieces on the tunnel side to form one ring. Next, the formed ring is moved to the tunnel side and joined to the existing ring to complete the assembly of one ring.

[0012]

Embodiments of the present invention will be described below with reference to the drawings.

In FIGS. 1 and 2, a support shaft, that is, an erector shaft 1 is fixedly installed on the rear side of the shield machine D on an axis line, and its end is movably supported on the lower surface of the tunnel T by a support leg 1a. ing.

A tubular body 2 is provided on the erector shaft 1 so as to be movable in the axial direction, and a rack 3 is provided along the shaft 1, which is a moving device, a pinion 4 provided on the body 2, and a pinion. It is adapted to be moved by the drive motor 5.

A pedestal 6 is rotatably provided on the main body 2. The pedestal 6 includes an outer cylinder 7 and a base 10. The outer cylinder 7 is rotated by a ring gear 8 provided on the main body 2 which is a turning device, a pinion 9 provided on the outer cylinder 7, and a pinion drive motor 9A. It is like this. Between the outer cylinder 7 and the base 10, an adjustment is made up of an annular projection 7a having an arcuate cross section formed on the outer circumference of the outer cylinder 7 and an annular recess 10a having an arcuate cross section formed on the circumference of the base 10. A wick device is provided.

On the base 10, a plurality of pairs (six pairs in the illustrated example) of arms 12a and 12b are erected radially. Grasping devices 12a, 12b for connecting the radially outer ends of the paired arms 11a, 11b are provided,
Those gripping devices 12a, 12b, arms 11a, 11b
A parallel link mechanism is formed by the base 10. Further, the paired arms 11a and 11b are provided with the diameter-expanding jacks 13a and 13b that undulate the arms 11a and 11b in opposite directions. That is, every other pair of arms 1 provided with a gripping device 12a.
1a and 11b, arm 11 on the K side (left side in the figure) K side
a of the a to the base 10 and the arm 1 on the tunnel T side
A diameter-expanding jack 13a is provided between the intermediate portion of 1b and
The other pair of arms 11a and 11b provided with the gripping device 12b include the arms 11b on the tunnel T side.
A diametrical expansion jack 13b is provided between the pivot point b to the base 10 and the middle of the arm 11a on the face K side.

Next, the mode of assembly will be described.

First, as shown in FIG. 2, the main body 2 is positioned in the tunnel T, the expanding diameter jack 13a is extended to lay the gripping device 12a on the tunnel T side, and the expanding diameter jack 13b is extended to hold the gripping device 12b. Face down to face K. Therefore, pieces A1 to A3 of the same shape having the trapezoidal developed plane shown in FIG. 3 are attached to the gripping devices 12a to 12a so that the lower bottom is on the tunnel T side, and similar pieces B1 to B3 are attached to the gripping device 12b.
Is installed so that the lower bottom is on the face K side.

Then, as shown in FIG.
And moves the pieces A1 to A3 to the space inside the skin plate P of the shield machine D. Therefore, the diameter-expansion jack 13a is contracted, and as shown in FIG.
To a predetermined diameter, that is, the same diameter as the existing ring R of the tunnel T.

Next, as shown in FIG. 5, the diameter expansion jack 1
While shrinking 3b and expanding the pieces B1 to B3 as shown in FIG. 10, they are inserted into the gaps between the pieces A1 to A3 as shown in FIG. 11 to form one ring R1.

Then, as shown in FIG. 8, the main body 2 is moved to the tunnel T side, the ring R1 is joined to the existing ring R, and the assembly of one ring R1 is completed. At this time, the ring R1 is aligned by the aligning device including the annular protrusion 7a and the annular recess 10a shown in FIG. 1, and the joining is smoothly performed.

[0022]

Since the present invention is constructed as described above, it has the following effects.

(1) Since the gripping device has the substantially same structure in which the gripping device is undulated on the opposite side, the structure can be simplified.

(2) Therefore, it is possible to easily attach the pieces to the gripping device all at once, and to assemble one ring and the like.

(3) Therefore, the assembling property can be greatly improved as compared with the conventional one.

[Brief description of drawings]

FIG. 1 is a side view showing a cross section of a part of an upper half portion showing an embodiment of the present invention.

FIG. 2 is a piece mounting process diagram.

FIG. 3 is a process drawing of moving the piece on the cutting face side.

FIG. 4 is a tunnel side piece diameter expansion process drawing.

FIG. 5 is a process diagram of increasing the diameter of the piece on the face side.

6 is a view on arrow X in FIG.

FIG. 7 is a view on arrow Y of FIG.

FIG. 8 is a process diagram of joining a ring to an existing ring.

FIG. 9 is a state diagram when each piece is attached.

FIG. 10 is a diagram showing a state where the face piece is inserted into the tunnel piece.

FIG. 11 is a state diagram when forming a ring of each piece.

[Explanation of symbols]

 A1 to A3, B1 to B3 ... Segment piece D ... Shielding machine K ... Face R, R1 ... Ring T ... Tunnel 1 ... Electa shaft 2 ... Main body 3 ... Rack 4 ... Pinion 6 ... Stand 7 ... Outer cylinder 8 ... Ring gear 9 ... Pinion 10 ... Base 11a, 11b ... Arm 12a, 12b ... Gripping device 13a, 13b ... Expansion cylinder

Claims (1)

[Claims] 1. A support shaft provided on an axis of a rear portion of a shield machine, a main body surrounding the support shaft and movable in an axial direction, a moving device for moving the main body, and a pedestal rotatable around the main body. A swivel device for swiveling the gantry, a plurality of pairs of arms radially erected from the gantry, jacks undulating the pair of arms alternately in opposite directions, and a radius of the pair of arms. A segment assembly device is provided, which is provided with a segment gripping device that forms a parallel link mechanism together with the arm and the gantry by connecting the outer ends in the direction.