JPH09256797A - Segment conveying method and segment conveying device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to accurately supply segments to a supply position even in case of curve execution and to eliminate a position adjustment of the segments caused by the curve execution by hanging segments conveyed to a backward truck on rails to directily convey the segments to the supply position for a segment holding device of an erector. SOLUTION: Two right and left hoist rails 10 are built between a backward truck 11 and a backward deck 14 of a shield main body 1A, and a segment transferring device 12 is hung on the hoist rails 10. The segment transferring device 12 is equipped with a segment mounting holder having a fork section 13a, the holder is traveled along the hoist rails 10, and it is so constructed that slant movement and up the down motion can be made. An assembled segment 5 conveyed to the backward truck 11 from a tunnel outlet by a segment carrying truck 20 is mounted on the fork section 13a of the segment transferring device 12, and it is directly conveyed to a segment supply position along the hoist rails 10. Accordingly, even in case of curve execution, the segment can be accurately supplied to the supply position.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and apparatus for transporting a segment of a shield machine, and more particularly to transporting a segment transported to a rear carriage of a shield machine to a supply position for a segment gripping device of an erector. The present invention relates to a segment transporting method and a device therefor.

[0002]

2. Description of the Related Art When a tunnel excavator excavates a natural ground to construct a tunnel, a plurality of segments are sequentially assembled in a ring shape in order to reinforce an inner surface of a tunnel wall excavated by the shield excavator. At this time, the segment is assembled by the erector installed in the shield machine. As a general segment assembly procedure, first, the segment to be assembled (hereinafter referred to as an assembly segment) is carried by the segment carrier from the tunnel entrance to the rear carrier of the shield machine, and then by the carrier device such as a hoist. Is transported from the rear carriage to the vicinity of the erector, and then the erector's gripping device grips the assembly segment to bring it to a predetermined position for assembly.

In the assembly of such a segment, in order to quickly perform the work of gripping the assembly segment by the gripping device of the erector, when the assembly segment is transported from the rear carriage to the vicinity of the erector by the transport device, the gripping device of the erector is It is necessary to accurately convey the material to the supply position.
The one disclosed in Japanese Patent Publication No. 3-71299 is known.

In the device disclosed in Japanese Utility Model Laid-Open No. 63-71299, one hoist rail is attached to the upper part of the shield main body, the hoist is suspended on this hoist rail, and two hoist rails are installed at the center of the shield main body. Attach the beam of the book, suspend the segment carry-in machine equipped with the stopper on this beam, first hoist the assembly segment on the segment carrier by the hoist, and hoist the hoist with the longitudinal direction of the assembly segment aligned with the tunnel axis direction. Move along the rail to the segment loading machine,
Rotate the assembly segment suspended by the hoist at that position by 90 degrees and lower it to the segment carry-in machine, and then move the segment carry-in machine forward along the beam. The segment carry-in machine is stopped by the stopper when it reaches the position directly below the metal object.

[0005]

However, the above-mentioned prior art has the following problems. 1) The hoist rail for the hoist is passed between the shield main body and the rear bogie, and the beam for the segment carry-in machine is fixed to the shield main body. It is parallel, but when the shield machine excavates a curve, the parallel relationship between the two is displaced. Also, near the erector,
Mud pipe (or screw conveyor), rear deck,
Since the perfect circle cage etc. are installed, the transfer of the assembled segment from the hoist to the segment carry-in machine must be done away from the erector.

Therefore, in the transportation of the assembly segment at the time of curve construction, after the assembly segment carried by the hoist at a position away from the erector is lowered onto the segment carry-in machine, the segment carry-in machine is moved to a position where it is stopped by the stopper. When this is done, the position of the hanging metal fitting of the assembly segment is displaced from the position directly below the hanging metal object of the hanging beam.
When such a shift occurs, it is necessary to manually move the suspension beam so that the suspended metal member of the suspension beam is directly above the suspension metal fitting of the assembly segment, and it takes time for the erector to grip the assembly segment. Therefore, it is necessary to adjust the position on the segment carry-in machine so that the position of the hanging metal fitting of the assembly segment does not deviate from the position directly below the hanging object of the hanging beam. However, in this case, a device for adjusting the position of the assembly segment is required, which requires a space under the shield machine.

2) As described above, two types of rails, such as a hoist rail for hoists and a beam for a segment carry-in machine, are provided behind the erector, but as already mentioned, many are behind the erector. Since the equipment is installed, it is difficult to arrange the two types of rails so that the hoist and the segment carry-in machine can transfer the assembled segment without interference.

3) When the assembly segment is transferred from the hoist to the segment carry-in machine, a space for rotating the assembly segment by 90 degrees is required. Therefore, it is necessary to move the segment carry-in machine backward by at least that space. , The beam becomes longer by that amount.

4) The segment carry-in machine, after receiving the assembled segment from the hoist, moves forward along the beam and delivers the assembled segment to the erector, where the segment carry-in machine occupies the lower space in the shield machine. Therefore, it is difficult for workers to come and go and materials to be transported. In addition, since the perfect circle holder is usually installed in the section where the segment carry-in machine moves, in order to move the segment carry-in machine in that section, either the perfect circle holder is not attached or the perfect circle holder is installed. It is necessary to change the shape to, for example, an upper strut type.

An object of the present invention is to provide a segment transfer method and its apparatus which are compact and do not occupy space and do not require position adjustment due to curved construction.

[0011]

[Means for Solving the Problems]

1) In order to achieve the above-mentioned object, the present invention relates to the erector when the segment is sequentially assembled into a ring shape by the erector of the shield machine, and the segment carried by the segment carrier is to the rear carriage of the shield machine. In the segment transporting method for transporting to a supply position for the segment gripping device, a segment transfer device is provided, in which a rail extending from the rear carriage to a position near the erector is provided, and a segment transported to the rear carriage is suspended and moved by the rail. Is directly conveyed to the supply position.

In the segment transfer method of the present invention configured as described above, the segment transferred to the rear carriage is directly transferred along the rail by the segment transfer device.
By transporting to the supply position, it is possible to accurately supply the segment to the supply position even during curved construction.
It is not necessary to adjust the position of the segment due to the curved construction, and it is not necessary to attach a device for that purpose. Also,
Since only the rail extending from the rear bogie to the vicinity of the erector is provided, the occupied space in the shield machine can be reduced as compared with the conventional case where two types of rails are provided behind the erector.

2) In the above segment transfer method, preferably, the rear carriage is provided with a segment temporary receiving base,
The segment that has been conveyed to the rear carriage is temporarily received by the temporary holder for the segment, and then the temporarily received segment is directly conveyed to the supply position by the segment transfer device.

3) Further, preferably, a segment positioning base is fixed at a position of the rear carriage in a predetermined positional relationship with the rail, and a segment carried to the rear carriage is suspended and moved by the rail. The segment transfer device temporarily transfers the segment to the segment positioning table and positions it, and then the segment transfer device directly conveys the segment to the supply position.

4) Further, in order to achieve the above object,
The present invention, when the segments are sequentially assembled into a ring shape by the erector of the shield machine, the segment conveyed by the segment carrier to the rear carriage of the shield machine is transported to the supply position for the segment gripping device of the erector. In the transport device,
A rail passed from the rear carriage to near the erector, and a segment transfer device that is movably suspended on the rail and directly conveys the segment conveyed to the rear carriage to the supply position; The segment transfer device includes a segment mounting base having a fork portion protruding forward, a traveling device that engages with the rail, and a vertical movement device that vertically moves the platform with respect to the traveling device. And

In the segment transfer device of the present invention having the above-mentioned structure, the segment moving device moves the segment mounting base up and down with respect to the traveling device and is transported to the rear carriage. The segment transfer method described above can be carried out by placing the vehicle on the gantry, traveling the traveling device along the rail in that state, and directly transporting the segment laid on the gantry to the supply position. Further, since the gantry moves up and down with respect to the traveling device by the vertical movement device, the lower space inside the shield machine is not occupied unlike the conventional case, and it becomes easy for workers to come and go and convey materials. Also, when moving the segment transfer device forward along the rail, it may be moved with the pedestal raised until it passes over the perfect circle retainer, and it may be lowered by moving it after passing over the perfect retainer. You can
There is no need to change the shape of the perfect circle holder, and the conventional perfect circle holder can be used as it is.

5) In the above segment transfer device, preferably, the rail has a downward sloping portion between the rear carriage and the vicinity of the erector, and the segment transfer device positions the gantry with respect to the traveling device. And a tilting support device for tiltably supporting the device.

6) Further, preferably, it further comprises a segment temporary receiving base which is provided on the rear bogie and temporarily receives the segment carried to the rear bogie.

7) Further, preferably, a segment positioning base installed in a predetermined positional relationship with the rail at the position of the rear carriage, and a segment positioning base suspended on the rail so as to be movable behind the segment transfer device, And a segment transfer device for transferring and transferring the segment carried to the cart to the segment positioning table.

8) In this case, preferably, the segment positioning base is a frame which is fixed and suspended on the rail, and a base which is provided below the frame and on which the segment transferred by the segment transfer device is placed. And a positioning bracket that is provided on the base and that guides and positions the segment at a fixed position when the segment is mounted, and the positioning bracket has a guide surface that is inclined inward at the upper end.

[0021]

Embodiments of the present invention will be described below with reference to the drawings. First, a first embodiment of the present invention will be described with reference to FIGS. The segment carrier of this embodiment is provided in a shield machine 1 as shown in FIG. 1, and the shield machine 1 has a shield body 1A, and an erector 2 is installed behind the shield body 1A. Has been done.

When the shield machine 1 excavates the ground to construct a tunnel, the erector 2 sequentially assembles a plurality of segments in a ring shape to reinforce the inner surface of the excavated tunnel wall. A segment ring 30 is formed by gripping a segment to be assembled (hereinafter referred to as an assembly segment) 5 with a gripping device 4, and then rotating the gripping device 4 by a turning motor 3 to position and assemble the assembly segment 5 at a predetermined position. Will be assembled in sequence. Here, a gripping screw 4a is provided in the lower portion of the gripping device 4, and a grout hole 5a that matches the gripping screw 4a is provided in the center of the assembly segment 5, and the gripping device 4 has the gripping screw 4a. Is screwed into the grout hole 5a to grip the assembly segment 5.

Behind the shield body 1A, a rear carriage 11 for mounting hydraulic equipment and electric equipment is arranged.
As shown in FIG. 2, the rear bogie 11 has rails 9 laid on the sleepers 6 attached to the segment rings 30.
You can drive along. Although not shown, rails are also laid on the sleepers 6 for moving a segment carrier 20 with a turntable that carries the assembly segment 5 from the tunnel well to the rear carrier 11.

From the rear carriage 11 to the vicinity of the erector 2, two left and right hoist rails 10 are passed, and the hoist rail 10 has a shield body 1A on the side of the erector 2.
It is pin-connected to the rear deck 14 attached to the rear deck 11, and is pin-connected to the upper frame 11a on the rear bogie 11 side, and has a downward inclined portion 10a between the rear bogie 11 and the vicinity of the erector 2.

A segment transfer device 12 is suspended on the hoist rail 10. The segment transfer device 12 moves along the hoist rail 10 from the position of the rear carriage 11 to the vicinity of the erector 2 and is moved from the tunnel well by the segment transfer carriage 20. The assembly segment 5 that has been transported to the rear carriage 11 is transported to the segment supply position. Here, the segment supply position means that when the gripping device 4 of the erector 2 is at the position shown in FIG. 1 (hereinafter, initial position),
The position where the grout hole 5a of the assembly segment 5 placed on the frame 13 (described later) of the segment transfer device 12 is almost directly below the gripping screw 4a of the gripping device 4 (two-dot chain line A in FIG. 1).
Position).

The segment transfer device 12 is shown in FIGS.
As shown in FIG. 1, a segment mounting base 13 having a fork portion 13a protruding forward, and a hoist rail 1
The traveling device 34 that engages with the
And a vertical movement device 3 for vertically moving the gantry 13 with respect to the traveling device 34.
6.

The traveling device 34 has an upper frame 40, and a guide wheel 48 engaging with the hoist rail 10 is attached to the upper frame 40. An electric motor 47 is attached to the upper frame 40, and the electric motor 4
7, a drive pinion 46 that engages with a rack 49 attached to the bottom of the hoist rail 10 is attached,
When the electric motor 47 is rotated, the drive pinion 46 is rotationally driven to move on the rack 49, and accordingly, the upper frame 40
Is guided by the guide wheel 48 and the hoist rail 1
Run over 0.

The tilt support device 35 has a lower frame 41 connected to the upper frame 40 via a pin 50 and a hydraulic jack 51 provided between the upper frame 40 and the lower frame 41. When 10 is tilted, the hydraulic jack 51 is set so that the pedestal 13 is kept at the horizontal position shown by the two-dot chain line B in FIG. 1 based on the detection value of the inclinometer (not shown) provided on the upper frame 40. Control.

The vertical movement device 36 has a guide post 42 hanging from the lower frame 41, and the pedestal 13 is attached to the guide post 42 so as to be vertically movable. Further, the vertical movement device 36 has a winch 43 mounted on the lower frame 41, and the winch 43 winds the wire 45 through the sheave 44, so that the gantry 13 is moved to the guide post 4 and
It is guided by 2 and moves up and down.

The pedestal 13 has two fork portions 13a protruding forward from the lower frame 41, and the assembly segment 5 is placed on the fork portions 13a. The traveling of the traveling device 34 and the vertical movement of the gantry 13 are controlled by an operator operating a pendant switch (not shown).

A perfect circle holder 7 for holding the assembled segment ring 30 in a perfect circle is installed behind the erector 2, and earth and sand excavated by a cutter not shown in the shield body 1A is provided in the shield body 1A. A screw conveyor 8 that discharges backward is installed.

A method of transporting the assembled segment 5 to the segment supply position by the segment transporting device configured as described above will be described. First, the assembly segment 5 is placed on the segment carrier 20 at the tunnel entrance, and the segment carrier 20 is moved to the rear carrier 11. At this time, the assembly segment 5 is carried with its longitudinal direction oriented in the tunnel axial direction, and the assembly segment 5 is rotated 90 degrees at the position of the rear carriage 11 so that the longitudinal direction is oriented in the tunnel circumferential direction. FIG. 2 shows a state after the assembly segment 5 is rotated 90 degrees.

Next, the operator operates a pendant switch (not shown) to move the segment transfer device 12 to the rear of the segment carrier truck 20. Then
Lower the fork portion 13a of the gantry 13 to a height at which it can be inserted between the assembly segment 5 and the segment transport carriage 20, and then move the segment transfer device 12 forward,
When the fork portion 13a enters between the assembly segment 5 and the segment carrier truck 20, the fork portion 13a is raised to scoop up the assembly segment 5. Then, the segment transfer device 12 is advanced to a position beyond the perfect circle holder 7.

Next, the assembly segment 5 is attached to the erector 2.
After lowering the fork portion 13a to a height at which it can be supplied to the gripping device 4, the segment transfer device 12 is advanced to the segment supply position and stands by. Here, since the segment transfer device 12 has a structure in which the assembly segment 5 is placed on the fork portion 13a protruding forward of the traveling device 34 and the tilt supporting device 35, the traveling device 34 and the tilt supporting device 35 are mounted on the erector. It is possible to feed the assembly segment 5 below the gripping device 4 without going into the swiveling range of 2. That is, while the erector 2 is assembling the previous segment, the segment transfer device 12 can put the assembly segment 5 on the fork portion 13a, advance to the segment supply position, and stand by.

When the assembly of the front segment is completed by the erector 2, the gripping device 4 is swung to return to the initial position (described above), and then the gripping device 4 is moved downward while rotating the gripping screw 4a to supply the segment. The assembly segment 5 in the position is gripped, and then the gripping device 4 is rotated to a predetermined position to assemble the assembly segment 5.

Here, as a comparative example, the actual construction of Shokai Sho 63-71 is used.
A method of transporting an assembly segment to a segment supply position using a segment transport device to which the device described in Japanese Patent No. 299 is applied will be described.

FIG. 5 shows a segment transfer device to which the device described in the above publication is applied. In FIG. 5, one hoist rail 83 is passed between the shield body 80A of the shield machine 80 and the rear bogie 81, and a hoist 84 is suspended on the hoist rail 83. The attached assembly segment 85 is lifted from the segment carrier 87 and moved forward along the hoist rail 83. Hoist rail 8
Two beams 90 are integrally attached to the shield main body 80A below 3, and a segment carry-in device 91 is suspended on these beams 90. This segment carry-in machine 91 is provided with a stop stopper 99 and a positioning stopper 98, and an arm portion 93 on which the assembly segment 85 is mounted, and a positioning device for pulling the assembly segment 85 mounted on the arm portion 93 toward the positioning stopper 98. 94, and along with the beam 90 after receiving the assembly segment 85 from the hoist 84, the hanging metal fitting 85a of the assembly segment 85 is provided substantially directly below the hanging metal object 96a provided under the hanging beam 96 of the erector 95. Move to the position where you come.

The procedure for carrying a segment by using the segment carrying device configured as described above is as follows. 1) The assembly segment 85 on the segment carrier truck 87 is lifted by the hoist 84. 2) With the longitudinal direction of the assembly segment 85 oriented in the tunnel axis direction, the hoist 84 is moved to the front of the segment carry-in machine 91 at the solid line position in the figure. 3) Assembly segment 85 suspended from hoist 84
Is rotated 90 degrees to orient the longitudinal direction in the circumferential direction. 4) Align the hoist 84 and the segment carry-in machine 91 in the tunnel axial direction, and lower the assembly segment 85 to the arm portion 93 of the segment carry-in machine 91. 5) The positioning device 94 pulls the assembly segment 85 placed on the arm 93 toward the positioning stopper 98. 6) The segment carry-in machine 91 is moved forward until the stop stopper 99 hits the erector 95. 7) The assembled segment 85 on the segment carry-in machine 91 is gripped by the erector 95.

In the above, the hoist rail 83 is pin-coupled to the shield body 80A and the rear carriage 81, and the beam 90 is fixed to the shield body 80A. Therefore, when the shield machine 80 travels straight,
As shown in (a), the hoist rail 83 and the beam 90
Since it is in parallel with, when the segment 85 carried by the hoist 84 is lowered to the segment carry-in machine 91,
As shown by the dotted line, the hanging metal fitting 85 of the assembly segment 85
a (S in the figure) is located on the center line O (corresponding to the excavation route) of the segment loading machine 91, and in this state, when the segment loading machine 91 is moved until the stop stopper 99 hits the erector 95, it is indicated by a solid line. As described above, the hanging metal fitting 85a of the assembly segment 85 comes to a position (K in the figure) immediately below the hanging metal object 96a of the hanging beam 96.

However, when the shield machine 1 excavates a curve, as shown in FIG. 6B, the hoist rail 8 is used.
Since the parallel relationship between the beam No. 3 and the beam 90 is deviated, when the segment 85 carried by the hoist 84 is lowered to the segment carry-in machine 91, the hanging metal fitting 85a of the assembly segment 85 (Fig. Medium S) deviates from the center line O of the segment carry-in machine 91, and when the segment carry-in machine 91 is moved in this state until the stop stopper 99 hits the erector 95, the hanging metal fitting 85a (of the assembly segment 85 as shown by the solid line ( S *) in the figure is displaced from the position (K in the figure) immediately below the hanging metal piece 96a of the hanging beam 96.

At this time, if the assembly segment 85 can be delivered from the hoist 84 to the segment carry-in machine 91 in the vicinity of the erector 95, the displacement of the segment position can be small. Since the pipe (or screw conveyor), the rear deck, the perfect circular holder, and the like are installed, the assembly segment 85 must be delivered at a position away from the erector 95 as shown in FIG. Therefore, it is inevitable that the hanging metal fitting 85a of the assembly segment 85 deviates from the position directly below the hanging metal fitting 96a of the hanging beam 96. In this case, the hanging metal fitting 96a is manually operated so as to come directly above the hanging metal fitting 85a. The suspension beam 96 needs to be moved and it takes time for the erector 95 to grip the assembly segment 85. Therefore, it is possible to adjust the position on the segment carry-in device 91 so that the position of the hanging metal fitting 85a does not deviate from the position directly below the hanging hardware 96a. In this case, however, a device for adjusting the position of the assembly segment 85 is used. It is necessary, and the space below the shield machine 80 is taken.

Since many devices are installed near the erector 95 and the space is small as described above, the hoist 84 and the segment carry-in machine 91 can deliver the segment 85 without interfering with each other. In addition, it is difficult to arrange the hoist rail 83 and the beam 90. In addition, when the segment 85 is transferred from the hoist 84 to the segment carry-in machine 91, a space for rotating the segment 85 by 90 degrees is required.
1 must be moved backwards by at least that space, which lengthens beam 90. Further, after the segment carry-in machine 91 receives the assembly segment 85 from the hoist 84, it moves forward along the beam 90 and delivers the assembly segment 85 to the erector 95. In this case, the segment carry-in machine 91 is operated by the shield machine 1 Since it occupies the lower space inside, it is difficult for workers to come and go and transport materials. Further, since the perfect circle holder is usually installed in the section where the segment carry-in machine 91 moves, in order to move the segment carry-in machine 91 in that section, the perfect circle holder is not attached, or It is necessary to change the shape of the perfect circle retainer to, for example, an upper strut type.

On the other hand, in the present embodiment, the assembly segment 5 carried to the rear carriage 11 is placed on the fork portion 13a of the segment transfer device 12, and the segment transfer device 12 is placed along the hoist rail 10 in that state. Since it is moved directly to the position of Erector 2,
As shown in (a) and (b), even when the shield machine 1 excavates in a curve, the assembly segment 5 can be reliably conveyed to the segment supply position, as in the case of straight line excavation. Thereby, it is not necessary to adjust the position of the assembly segment 5 due to the curved construction, and it is not necessary to install a device for adjusting the position of the assembly segment on the segment carry-in machine as in the comparative example. You can secure the space at the bottom.

The rear deck 14 of the shield body 1A
Since only the hoist rail 10 is arranged between the rear bogie 11 and the rear bogie 11, the equipment installation space in the shield machine 1 is small, and the hoist rail 10 and the segment transfer device 12 can be arranged easily. Further, since the fork portion 13a of the segment transfer device 12 is moved up and down by the winch 43 provided on the upper frame 40, the lower space in the shield machine is not occupied unlike the comparative example, and the workers come and go. It facilitates the transportation of materials. Further, when moving the segment transfer device 12 forward along the hoist rail 10, the segment transfer device 12 is moved in a state where the fork portion 13a is raised until it passes over the perfect circle holder 7, and after moving over the perfect circle holder 7, the fork is moved. The part 13a can be lowered and moved, and it is not necessary to change the shape of the perfect circle holder 7, and the conventional perfect circle holder 7 can be used as it is.

Further, since the segment transfer device 12 can advance to the segment supply position and wait while the erector 2 is assembling the front segment, the next segment is immediately transferred after the erector 2 has assembled the front segment. It is possible to go to grip and reduce the segment assembly time.

A second embodiment of the present invention will be described with reference to FIGS. In the first embodiment, when the segment transfer device 12 receives the assembly segment 5 carried from the tunnel wellhead to the rear bogie 11 by the segment carrier 20, the segment carrier 12 directly receives from the segment carrier 20. In this case, the segment carrier 20 cannot move until the segment transfer device 12 receives the assembly segment 5. Therefore, in this embodiment, the assembled segment 5 carried by the segment carrier 20 is temporarily received by the segment temporary receiving table 21. In the figure, the same members as those shown in FIGS. 1 and 2 are designated by the same reference numerals, and the description thereof will be omitted.

In FIGS. 8 and 9, a segment temporary receiving base 21 is provided at the front part of the rear carriage 11 and the segment temporary receiving base 21 is moved up and down by a hydraulic jack 21a to assemble a segment on the segment transfer carriage 20. You can pick up 5. In such a configuration, the assembly segment 5 carried by the segment carrier 20 is temporarily picked up by the segment temporary receiving base 21 and temporarily received, and the segment carrier 20 is made to pick up the next assembly segment 5. Then, the fork portion 13a of the segment transfer device 12 is used to temporarily hold the segment holder 21.
The assembling segment 5 temporarily received by the above is picked up and conveyed to the segment supply position in the same manner as in the first embodiment.

According to the present embodiment configured as described above, when the assembly segment 5 carried by the segment carrier 20 is delivered to the segment temporary receiving base 21, the next assembly segment 5 is picked up by the segment carrier 20. Therefore, it is possible to shorten the segment transport time.

In the present embodiment, the temporary segment holder 21 is moved up and down by the hydraulic jack 21a to temporarily receive the assembled segment 5 on the temporary segment holder 21, but instead of the hydraulic jack 21a, an electric motor is used. You may use the mechanism which raises and lowers the segment temporary stand 21 with a motor. Further, the assembly segment 5 may be hung by a hoist and placed on the segment temporary receiving base 21.

A third embodiment of the present invention is shown in FIGS.
This will be described below. In the first embodiment, the assembly segment 5 is attached to the fork portion 13a of the segment transfer device 12.
If the assembly segment 5 is always placed at a fixed position of the segment transfer carriage 20 (here, a position that enables transportation to the segment supply position), the assembly segment 5 is placed at the segment supply position. Although it can be reliably transported, the assembly segment 5 cannot be transported to the segment supply position unless the assembly segment 5 is placed at a fixed position on the segment transport carriage 20. Therefore, in the present embodiment, even when the position where the assembly segment 5 is placed on the segment transfer carriage 20 is not constant, the assembly segment 5 can be reliably transferred to the segment supply position. In the figure, the same members as those shown in FIGS. 1, 2 and 8 are designated by the same reference numerals, and the description thereof will be omitted.

In FIG. 10, a segment transfer device 15 is movably suspended behind the segment transfer device 12 on the hoist rail 10, and is located at a position forward from the rear carriage 11 on the hoist rail 10 by a predetermined distance. The segment positioning table 16 is suspended.

The segment relocating device 15 includes the rear carriage 11
Assembly segment 5 that has been transported to hoist rail 1
0 is to be transferred to the segment positioning base 16 and transferred, and has an upper frame 60 as shown in FIGS. 11 and 12, and a guide wheel for engaging the hoist rail 10 on the upper frame 60. 68 is attached. An electric motor 67 is attached to the upper frame 60, and a drive pinion 6 that engages with a rack 69 attached to the lower part of the hoist rail 10 is attached to the electric motor 67.
6 is attached, and when the electric motor 67 is rotated, the drive pinion 66 is rotationally driven to move on the rack 69, and accordingly, the upper frame 60 is guided by the guide wheel 68 and travels on the hoist rail 10. The upper frame 60 suspends the lower frame 61 via a wire 65,
The lower frame 61 is moved up and down by winding the wire 65 with the winch 63 provided on the upper frame 60. On the lower frame 61, a grip fitting 62 for gripping the assembly segment 5 is attached, and a side frame 61A for positioning is provided to prevent the grip of the assembly segment 5 from rotating. The traveling of the upper frame 60 and the vertical movement of the lower frame 61 are controlled by an operator operating a pendant switch (not shown).

The segment positioning base 16 is the rear carriage 1.
The assembly segment 5 that has been transported to 1 is positioned so that it is placed at a fixed position on the fork portion 13a of the segment transfer device 12. Here, the mounting position of the assembly segment 5 is such that when the assembly segment 5 is conveyed by the segment transfer device 12,
Is a position just like the segment supply position.

As shown in FIG. 13, the segment positioning base 16 is a frame 19 fixed to the hoist rail 10 and hung, and an assembly segment provided under the frame 19 and transferred by the segment transfer device 15. 5 has a base portion 25 on which it rests, and a positioning bracket 17 which is provided on this base portion 25 and which guides the assembly segment 5 when it is placed and positions it at a fixed position on the fork portion 13a. As shown in FIG. 14, a taper-shaped guide surface 18 that is inclined inward is provided at the upper end of the positioning bracket 17.

Further, the rear carriage 11 is provided with a segment temporary receiving base 21, and the other structure is the same as that shown in FIG.

A method of transporting the assembled segment 5 to the segment supply position by the segment transporting device configured as described above will be described. First, the operator operates a pendant switch (not shown) to move the segment transfer device 15 to suspend the assembled segment 5 temporarily placed on the temporary segment receiving base 21 (position A in FIG. 10).

Next, the segment transfer device 15 is moved forward along the hoist rail 10 to the position of the segment positioning base 16 and the suspended assembly segment 5 is lowered onto the segment positioning base 16 (position C in FIG. 15). Since the guide surface 18 is attached to the upper end portion of the positioning bracket 17 of the segment positioning base 16, when the assembly segment 5 is lowered from the segment transfer device 15 to the segment positioning base 16, the assembly segment 5 is guided by the guide surface 1.
8 and is positioned so as to be placed at a fixed position on the fork portion 13a. After that, the segment transfer device 15 is moved to the position of the segment temporary receiving base 21, and the operation for lifting the next segment is started.

Next, the segment transfer device 12 is moved to the rear of the segment positioning base 16 (position B in FIG. 10), the fork portion 13a is lowered, and the assembly segment 5 is scooped up.

Then, as in the first embodiment, the segment transfer device 12 is moved to the segment supply position (position D in FIG. 15). At this time, the assembly segment 5 is always conveyed in a state of being placed in a fixed position on the fork portion 13a, so that even if the position where the assembly segment 5 is placed on the segment carrier 20 is not constant, the assembly segment 5 and the erector The relative position with respect to 2 is always constant, and the assembly segment 5 is always reliably conveyed to the segment supply position.

According to the present embodiment configured as described above, the assembly segment 5 is assembled by the segment positioning base 16.
Is positioned at a fixed position on the fork portion 13a, the assembly segment 5 can be reliably transported to the segment supply position even if the mounting position of the assembly segment 5 on the segment transport carriage 20 is not constant. Further, since the segment positioning base 16 has a structure in which the positioning bracket 17 provided with the tapered guide surface 18 is attached to the base portion 25, the assembly segment 5 is positioned at a fixed position on the fork portion 13a with a simple structure. be able to.

In this embodiment, the assembly segment 5 carried by the segment carrier 20 is temporarily placed on the segment temporary receiving base 21 and then the assembly segment 5 is temporarily placed on the segment temporary receiving base 21 by the segment transfer device 15. However, the present invention is not limited to this, and the assembly segment 5 placed on the segment carrier 20 is hoisted by the segment transfer device 15 to lift the segment positioning table 16
May be transferred to.

[0062]

According to the present invention, the following effects can be obtained.

1) Since the segment transfer device directly conveys the segment carried by the segment carrier to the rear carrier to the supply position for the segment holding device of the erector along the rail, the position adjustment of the segment due to the curved construction is performed. There is no need to carry out the above, and it is not necessary to install a device therefor in the shield machine.

2) Since only one type of rail is arranged between the shield body and the rear bogie of the shield machine, the shield excavation is performed as compared with the conventional case where two types of rails are arranged behind the shield body. The space occupied in the machine is small, the interference between devices in the shield machine is small, and the devices can be easily arranged.

3) Since the conventional segment carry-in machine is not required, the structure is simple, and it is easy for workers to come and go and to convey materials.

4) The gantry of the segment transfer device can be raised until it goes over the perfect circle holder, and the gantry of the segment transfer device can be lowered after it goes over the perfect circle holder to change the shape of the perfect circle holder. It is not necessary and a conventional perfect circular cage can be used.

[Brief description of drawings]

FIG. 1 is an overall view of a shield machine having a segment transfer device according to a first embodiment of the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG.

3 is an overall view of the segment transfer device shown in FIG. 1. FIG.

FIG. 4 is a sectional view taken along line IV-IV of FIG. 3;

FIG. 5 is an overall view of a shield machine equipped with a segment transfer device of a comparative example to which a conventional device is applied.

FIG. 6 is a diagram showing a state of segment transport according to the comparative example shown in FIG.

FIG. 7 is a diagram showing a state of segment transport according to the first embodiment of the present invention.

FIG. 8 is an overall view of a shield machine having a segment transfer device according to a second embodiment of the present invention.

FIG. 9 is a sectional view taken along line IX-IX of FIG. 8;

FIG. 10 is an overall view of a shield machine having a segment transfer device according to a third embodiment of the present invention.

11 is an overall view of the segment transfer device shown in FIG.

FIG. 12 is a sectional view taken along line XII-XII of FIG. 11;

13 is an overall view of the segment positioning base shown in FIG.

14 is a sectional view taken along line XIV-XIV in FIG.

FIG. 15 is a diagram showing a state of segment transportation according to a third embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 shield excavator 2 erector 4 gripping device 4a gripping screw 5 assembly segment 10 hoist rail 10a downward sloping part 11 rear bogie 12 segment transfer device 13 mount 13a fork part 15 segment transfer device 16 segment positioning base 17 positioning bracket 18 guide surface 19 Frame 20 Segment transport cart 21 Segment temporary support 21a Hydraulic jack 25 Base part 34 Traveling device 35 Tilt support device 36 Vertical movement device 40 Upper frame 41 Lower frame 42 Guide post 43 Winch 44 Sheave 45 Wire 46 Drive pinion 47 Electric motor 48 Guide wheel 49 rack 50 pin 51 hydraulic jack

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Yoshiaki Tamura 1-3-15 Awaza, Nishi-ku, Osaka City, Osaka Prefecture Kashima Construction Co., Ltd., Kansai Branch (72) Inventor, Yukihisa Hirasawa, 650 Kandachi-cho, Tsuchiura-shi, Ibaraki Hitachi Construction Machinery Company Tsuchiura Factory (72) Inventor Yasuo Mori 650 Jinrachicho, Tsuchiura City, Ibaraki Prefecture Hitachi Construction Machinery Company Tsuchiura Factory (72) Inventor Hisashi Hashimoto 650 Kintatemachi, Tsuchiura City Ibaraki Hitachi Construction Machinery Incorporated company Tsuchiura Plant (72) Inventor Takami Kusagi 650 Kandamachi, Tsuchiura City, Ibaraki Prefecture Hitachi Construction Machinery Incorporated Tsuchiura Plant (72) Inventor Ken Kamei 650 Kandamachi, Tsuchiura City Ibaraki Hitachi Construction Machinery Ceremony Company Tsuchiura Factory

Claims (8)

[Claims] 1. When the segments are sequentially assembled in a ring shape by the erector of the shield machine, the segments transported by the segment carrier to the rear carriage of the shield machine are transported to a supply position for the segment gripping device of the erector. In the segment transfer method, a rail extending from the rear carriage to the vicinity of the erector is provided, and the segment transported to the rear carriage is directly transported to the supply position by a segment transfer device that is suspended and moved by the rail. A segment transfer method characterized by the following. 2. The segment transfer method according to claim 1, wherein the rear trolley is provided with a segment temporary cradle, the segments transported to the rear trolley are temporarily tentatively received on the segment tentative cradle, and then the temporary trolley is temporarily received. The segment transfer method, wherein the received segment is directly transferred to the supply position by the segment transfer device. 3. The segment transfer method according to claim 1, wherein a segment positioning base is fixed in a predetermined positional relationship with the rail at the position of the rear carriage, and the segment carried to the rear carriage is suspended on the rail. A segment transfer method characterized in that the segment transfer device is moved and moved to the segment positioning base for positioning, and then the positioned segment is directly transferred to the supply position by the segment transfer device. 4. When the segments are sequentially assembled in a ring shape by the erector of the shield machine, the segments transported by the segment carrier to the rear carriage of the shield machine are transported to a supply position for the segment gripping device of the erector. In the segment transfer device, a rail that is passed from the rear carriage to a position near the erector, and a segment transfer device that is movably suspended on the rail and that directly transports a segment that has been transported to the rear carriage to the supply position. The segment transfer device includes a segment mounting frame having a fork portion protruding forward, a traveling device engaging with the rail, and a vertical movement for vertically moving the frame with respect to the traveling device. And a device for transporting the segment. 5. The segment transfer device according to claim 4, wherein the rail has a downward sloping portion between the rear carriage and the vicinity of the erector, and the segment transfer device sets the gantry to the traveling device. A segment transfer device, further comprising a tilting support device that tiltably supports the segment transfer device. 6. The segment transfer device according to claim 4, further comprising a segment temporary receiving base provided on the rear bogie and temporarily receiving a segment transported to the rear bogie. apparatus. 7. The segment transfer device according to claim 4, wherein a segment positioning table installed in a predetermined positional relationship with the rail at the position of the rear carriage, and movable to the rail behind the segment transfer device. A segment transfer device further comprising: a segment transfer device that transfers a segment that has been suspended and has been transported to the rear carriage to the segment positioning base to transfer the segment. 8. The segment transfer device according to claim 7, wherein the segment positioning base is provided on a frame that is fixed and suspended on the rail, and is provided below the frame, and is transferred from the segment transfer device. A base part on which the segment rests, and a positioning bracket which is provided on the base part and guides the segment to position it at a fixed position when the segment rests, the positioning bracket has a guide surface inclined inward at the upper end. A segment transfer device having.