JP2015052240A - Suspending tool for segment used in shield construction and transport method of segment in shield construction - Google Patents

Abstract

PROBLEM TO BE SOLVED: To safely bind two or more segments, and improve the workability of releasing the bundling of the two or more segments and the workability of attitude change of the segments.SOLUTION: A suspending tool 10 includes a rectangular frame 12 for sandwiching two or more stacked segments C by brackets 12A, 12B with a long side in the thickness direction, and sandwiching and binding the segments by brackets 12C, 12D with a short side in the width direction. A flange 12E for hanging wire of a chain block is provided in the bracket 12B that is one long side. Also, a connection point of the brackets 12A-12D separably connects the brackets, and connects the brackets in a relatively turnable manner. Then, the frame 12 is configured such that a portion including the bracket 12B provided with the flange 12E is turnable around a bolt 17 at three connection points in the state where the brackets are separated at least in one connection point.

Description

  The present invention relates to a segment hanging jig used in shield construction, and a segment conveying method in shield construction.

  In the shield construction, for the purpose of shortening the construction period and reducing the construction cost, it is required to reduce the number of segments per ring (that is, to increase the length) and widen the width of the segment. Moreover, in order to make it easy to attach the segment to the erector of the shield machine, it is necessary to load the segment in a horizontal position at the assembly position. On the other hand, in the pit, the width of the transport path of the segment is narrow or the height of the transport path is low for each cross section due to equipment such as a belt conveyor and a rear carriage. For this reason, when a segment having an elongated length and an enlarged width is transported in a pit, the posture of the segment being transported is changed vertically or horizontally (see, for example, Patent Document 1).

JP 2012-12214 A

  Although it is required to improve the efficiency of transporting segments by bundling and transporting multiple segments, as well as ensuring safety, improving the workability of bundling and releasing multiple segments, There is also a demand for improved workability in changing the posture of the segments.

  The present invention has been made in view of the above circumstances, and is capable of binding a plurality of segments safely, improving the workability of bundling and releasing the plurality of segments, and improving the workability of changing the posture of the segments. This is a problem.

  In order to solve the above-mentioned problems, a segment hanging jig used in shield construction according to the present invention sandwiches a plurality of stacked segments with their long sides in the thickness direction and with their short sides in the width direction. The frame is provided on one of the long sides, and the frame is attached to a hanging material hanging portion on which the hanging material of the lifting device is hung, at least one hinge portion, and at least one separated portion The frame is configured such that a portion including the one long side can be rotated around the hinge portion in a state where the connection portion is separated. To do.

  In addition, the hanging jig is provided on the other long side so as to extend on both sides in the crossing direction, and a second hanging material hanging portion on which the hanging material of the lifting device is hung is provided on both sides in the longitudinal direction. A bracket may be provided.

  Further, a method for transporting segments in shield construction according to the present invention is a method for transporting segments in shield construction using the suspension jig, wherein a plurality of segments bound by the frame are viewed in an excavation direction. A step of conveying the long side of the frame side by side to the installation position of the suspension device, hanging the suspension material of the suspension device on the suspension member hanging portion of the long side, the plurality of segments and the A step of overturning the suspension jig while being suspended by the suspension device, and rotating the plurality of segments and the suspension jig around the suspension material of the suspension device, thereby assembling the plurality of segments. And a step of removing the suspension jig from the plurality of segments.

  In the method for transporting segments in the shield construction, the suspension device may be installed so as to be movable between the inside and the outside of the transport path of the plurality of segments, and the plurality of segments bound by the frame Before transporting the suspension device to the installation position of the suspension device, the suspension device is disposed outside the transportation path, and after the plurality of segments bound by the frame are conveyed to the installation position of the suspension device, The apparatus may be moved within the transport path.

  In the method of transporting segments in the shield construction, a belt having an inclined portion extending obliquely upward from the vicinity of the shield machine toward the wellhead and a horizontal portion extending horizontally from the inclined portion to the wellhead in the upper portion of the well in the well. A conveyor and a rear carriage pulled by the shield machine on the wellhead side from the suspension device may be installed, and the plurality of segments bound by the frame may be arranged below and behind the horizontal portion of the belt conveyor. Next to the carriage, the long side of the frame is transported in a posture aligned side by side when viewed in the excavation direction, and the plurality of segments bound by the frame are overturned under the inclined portion of the belt conveyor. You may convey with the attitude | position and the direction at the time of an assembly.

  According to the present invention, it is possible to bind a plurality of segments safely, improve the workability of bundling and releasing the plurality of segments, and improve the workability of changing the posture of the segments.

It is an elevational sectional view showing a shield tunnel with a small cross section during construction. It is a plane sectional view which shows the shield tunnel of the small cross section under construction. It is AA sectional drawing of FIG. It is BB sectional drawing of FIG. It is CC sectional drawing of FIG. It is DD sectional drawing of FIG. It is EE sectional drawing of FIG. FIG. 3 is an enlarged sectional view showing a swiveling jib and a chain block. FIG. 3 is an enlarged sectional view showing a swiveling jib and a chain block. It is an elevation (a front view) showing a hanging jig. It is an elevation view (side view) showing a hanging jig. It is a bottom view which shows a hanging jig. It is a top view which shows a hanging jig. It is an elevation (side view) which shows the state which unfolded the hanging jig. It is an elevation sectional view showing a procedure which conveys a segment in a tunnel of a shield tunnel. It is DD sectional drawing of FIG. It is an elevation sectional view showing a procedure which conveys a segment in a tunnel of a shield tunnel. It is DD sectional drawing of FIG. It is an elevation sectional view showing a procedure which conveys a segment in a tunnel of a shield tunnel. It is DD sectional drawing of FIG. It is an elevation sectional view showing a procedure which conveys a segment in a tunnel of a shield tunnel. It is DD sectional drawing of FIG. It is an elevation sectional view showing a procedure which conveys a segment in a tunnel of a shield tunnel. It is BB sectional drawing of FIG. It is DD sectional drawing of FIG.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a vertical sectional view showing a shield tunnel 1 having a small cross section during construction, and FIG. 2 is a plan sectional view showing the shield tunnel 1 having a small cross section during construction. 3 is a cross-sectional view taken along the line AA in FIG. 1, FIG. 4 is a cross-sectional view taken along the line BB in FIG. 1, FIG. 5 is a cross-sectional view taken along the line CC in FIG. 1 is a cross-sectional view taken along the line DD of FIG. 1, and FIG. 7 is a cross-sectional view taken along the line EE of FIG.

  As shown in these drawings, a belt conveyor 2, a segment supply conveyor 3, a rear carriage 4, a tow bar 5 and a rail 8 of the rear carriage 4 (see FIG. 7), a carriage 6 and a rail 7 for transporting the segment C, a pair of Telja cranes 50 for transporting the segment C, and electric chain blocks 20, 21, 22 and the like for changing the posture of the segment C are installed. Has been.

  The belt conveyor 2 is installed in the central part in the width direction in the mine so as to extend from the vicinity of the discharge port of the screw conveyor 101 of the shield machine 100 to the pit side. The belt conveyor 2 includes an inclined portion 2A extending obliquely upward from the face side to the wellhead side in the vicinity of the shield machine 100, and a horizontal portion 2B extending horizontally from the rear end of the inclined portion 2A to the wellhead side in the upper part of the shaft. The mud discharged from the screw conveyor 101 of the shield machine 100 is transported to the wellhead side.

  Moreover, the segment supply conveyor 3 is installed in the center lower part of the width direction in a pit so that it may extend horizontally from the lower part of the erector 102 of the shield machine 100 to the lower part of the middle part of the inclined part 2A. The segment supply conveyor 3 conveys the segment C from below the middle part of the inclined part 2A to below the erector 102.

  The rear carriage 4 is installed closer to the wellhead side than the inclined portion 2A toward the one side in the width direction in the mine (right side when viewed from the wellhead side). One end of the tow bar 5 is attached to the front part of the rear carriage 4 and the other end is attached to the rear part of the shield machine 100, and the rear carriage 4 is pulled by the shield machine 100 through the tow bar 5. .

  The rail 7 is installed in the center lower part in the width direction in the mine so as to extend horizontally from the vicinity of the rear end of the segment supply conveyor 3 to the pit side, and the carriage 6 is installed on the rail 7. Here, the carriage 6 conveys the plurality of segments C bound by the hanging jig 10 from the wellhead side to the vicinity of the segment supply conveyor 3 through the side of the rear carriage 4.

  The pair of Telha cranes 50 are installed so as to extend from the position for changing the posture of the segment C, which will be described later, to the rear part of the segment supply conveyor 3 with the belt conveyor 2 sandwiched in the pit width direction and in parallel with each other. Each Telha crane 50 includes a rail 52 attached to the wall surface of the shield tunnel 1 and a hoist 54 suspended from the rail 52 so as to be movable.

  The chain block 20 is attached to the horizontal portion 2 </ b> B of the belt conveyor 2 through a turning jib 30. As shown in FIGS. 8 and 9, the swiveling jib 30 includes a fixed portion 32 attached to a side portion of the belt conveyor 2 and a rotating portion 34 rotatably connected to the fixed portion 32. . The fixed part 32 includes an upper part 32A and a cylindrical shaft part 32B. The upper portion 32A is welded to the channel steel 2C on the side of the belt conveyor 2. The shaft portion 32B extends vertically downward from the upper portion 32A, and a diameter-expanded portion 32C is provided at the lower end.

  The rotating portion 34 includes a cylindrical tube portion 34A, an arm portion 34B having an H-shaped cross section, and an eyebolt 34C. The cylindrical portion 34A is rotatably attached to the shaft portion 32B, and is rotatable around the vertical axis. Here, the enlarged diameter portion 32C functions as a stopper from the shaft portion 32B of the cylindrical portion 34A. The arm portion 34B extends horizontally from the side portion of the cylindrical portion 34A. Further, the eyebolt 34C is attached to the lower end of the arm portion 34B, and the chain block 20 is suspended from the eyebolt 34C.

  That is, the chain block 20 is supported by the horizontal portion 2B so as to be rotatable around an axis extending vertically downward from a position on the side of the horizontal portion 2B. It is possible to move between the position deviated from the bottom to the outside in the pit width direction. Here, the former position is a work position where the lifting jig 10 and the segment C are lifted by the chain block 20, and the latter position is a retreat position where the work is retreated from the work position. Further, the work position exists on the transport path of the segment C transported in a vertical posture.

  As shown in FIGS. 1 and 6, the chain blocks 21 and 22 are attached to the wall surface of the shield tunnel 1 at the same height in the vicinity of the chain block 20. Here, the rotation axis of the chain block 20 is arranged on the right side of the horizontal portion 2B when viewed from the wellhead side, whereas the chain blocks 21 and 22 are more than the horizontal portion 2B when viewed from the wellhead side. Arranged on the left side. Further, the chain block 21 is arranged on the face side of the chain block 20, whereas the chain block 22 is arranged on the wellhead side of the chain block 20.

  FIG. 10 is an elevation view (front view) showing the hanging jig 10, and FIG. 11 is an elevation view (side view) showing the hanging jig 10. FIG. 12 is a bottom view showing the hanging jig 10, and FIG. 13 is a plan view showing the hanging jig 10. The hanging jig 10 includes one for binding two segments C and one for binding three segments C (see FIG. 10). The hanging jig 10 includes a rectangular frame 12 composed of brackets 12 </ b> A to D and a pair of brackets 14 attached to the frame 12.

  In the frame 12, the brackets 12A and 12B have long sides and the brackets 12C and 12D have short sides, and one end in the longitudinal direction of the brackets 12A and 12B is connected by the bracket 12C. The ends are connected by a bracket 12D. In addition, the pair of brackets 14 are attached to the central portion in the longitudinal direction of the bracket 12A so that the bracket 12A and the pair of brackets 14 have a cross shape.

  A slinging flange 12E is provided at the longitudinal center of the bracket 12B, and a slinging flange 14A is provided at the tip of the bracket 14 (the end opposite to the bracket 12A side). Moreover, the bolt 15 for fixing the segment C is provided in the longitudinal direction both sides of the bracket 12B. The bolt 15 is fastened to the bracket 12 </ b> B with a nut 16, and the tip of the bolt 15 is applied to the segment C. In this state, the plurality of overlapping segments C are sandwiched between the brackets 12A and 12B in the thickness direction and are bound by the frame 12 while being sandwiched between the brackets 12C and 12D in the width direction.

  A pair of flanges 12F are provided at both longitudinal ends of the brackets 12C and 12D. The pair of flanges 12F are provided on both sides of the brackets 12C and 12D in the width direction so as to protrude toward the brackets 12A and 12B, and between the pair of flanges 12F in the longitudinal direction of the brackets 12A and 12B. The end is arranged. Bolt holes penetrating the flanges 12F and brackets 12A and 12B between them are formed, and bolts 17 are inserted into the bolt holes. A nut 18 is screwed onto the tip of the bolt 17, and the bolt 17 is fixed to the pair of flanges 12 </ b> F by the nut 18.

  Here, the longitudinal ends of the brackets 12A and 12B are not fastened to the brackets 12C and 12D by bolts 17 and nuts 18, and as shown in FIG. 14, one or more bolts 17 are connected to the bracket 12A. In a state in which the brackets 12A to 12D are removed from the connection point of -12D, the brackets 12A to 12D can rotate around the bolt 17 at the connection point. As a result, the brackets 12 </ b> A to 12 </ b> D can be expanded to remove the segment C from the frame 12.

  15 to 25 are elevational sectional views showing a procedure for transporting the segment C in the tunnel of the shield tunnel 1. First, as shown in FIGS. 15, 16, and 7, the plurality of segments C bound by the hanging jig 10 are transported by the carriage 6 to the installation positions of the chain blocks 20, 21, 22. Here, as shown in FIGS. 15 and 16, the rear carriage 4 exists on the wellhead side of the installation position of the chain blocks 20, 21, 22. The rear carriage 4 is present on the right side of the mine when viewed from the pit side, and the segment C must be transported on the left side of the rear carriage 4, but the lateral width on the left side of the rear carriage 4 in the mine is The width in the tangential direction (the length between both ends in the circumferential direction) and the width in the width direction are narrower. Therefore, as shown in the drawing, the segment C is placed in a vertical posture such that both ends in the circumferential direction are located closer to the rear carriage 4 than the central portion in the circumferential direction, and the rear side is fixed to the carriage 6 with a crusher. Transport on the left side of the carriage 4. At this time, the suspension jig 10 has a posture in which the frame 12 is vertical, the bracket 14 is horizontal, and the brackets 12A and 12B are arranged side by side when viewed in the excavation direction.

  Here, as shown in FIG. 8, when the segment C is carried into the installation position of the chain blocks 20, 21, 22, the chain block 20 is put on standby at the above-described retracted position. Thereby, the segment C can be carried into the installation positions of the chain blocks 20, 21, 22 without causing interference with the chain block 20. Then, as shown in FIG. 9, after carrying in, the chain block 20 is moved to the working position by the turning jib 30. At this time, the segment C is curved such that the central portion in the circumferential direction is farther from the chain block 20 than both ends, so that a path for moving the chain block 20 from the retracted position to the working position is secured.

  Then, as shown in FIGS. 15 and 16, the wire 20A of the chain block 20 is attached to the flange 12E, the wire 21A of the chain block 21 is attached to one flange 14A, and the wire 22A of the chain block 22 is attached to the other flange 14A.

  Next, as shown in FIGS. 17 and 18, the load clamp is released, and the lifting jig 10 and the plurality of segments C are lifted by the chain blocks 20, 21, and 22. Here, the distance between the chain blocks 21 and 22 in the digging direction is set to be equal to the distance between the pair of flanges 14 </ b> A, and the chain block 20 is arranged at a position equidistant from the chain blocks 21 and 22. The chain blocks 20, 21, and 22 arranged in this manner lift the suspension jig 10 and the plurality of segments C bound by the suspension jig 10 with the frame 12 vertically and the bracket 14 in a horizontal posture.

  Next, as shown in FIGS. 19 and 20, the segment C is corrected to the horizontal posture. In this step, the chain blocks 21 and 22 are rolled down in a state in which the center of the hanging jig 10 is hung by the chain block 20, so that the segment C and the hanging jig 10 are overturned by their own weight. Thereafter, the wires 21A and 22A are removed from the flange 14A.

  Next, as shown in FIGS. 21 and 22, the direction of the segment C is corrected. In this step, the operator attaches the wire 9 to the segment C or the hanging jig 10 and operates it, thereby rotating the segment C and the hanging jig 10 by 90 ° around the wire 20A. Then, the segment C and the hanging jig 10 are lowered onto the carriage 6 by rolling down the chain block 20. As a result, the segment C is loaded in the direction in which it is assembled by the erector 102.

  Next, as shown in FIG. 14, the segment C is removed from the hanging jig 10. In this step, the bolts 17 that connect the bracket 12B and the bracket 12D are removed from the flange 12F, and the brackets 12B, 12C, and 12D are rotated around the bolts 17 at the connection points to expand the frame 12. Here, the frame 12 is deployed so that the brackets 12B, 12C, and 12D extend in the excavation direction, so that the operation can be performed regardless of the width of the shield tunnel 1.

  Next, as shown in FIGS. 23 to 25, the loaded segment C is transported to the segment supply conveyor 3 by a pair of Telha cranes 50 without changing the direction. Here, the inclined portion 2A of the belt conveyor 2 exists on the transport path of the segment C, but the segment C is curved so as to be concave from the left and right sides to the center side when viewed in the digging direction. By conveying, interference with the inclined portion 2A can be avoided. Thereafter, the loaded segment C is conveyed by the segment supply conveyor 3 to the position of the erector 102 without changing the direction.

  As described above, in the method for transporting the segment C in the shield construction according to the present embodiment, the hanging jig 10 that binds the plurality of segments C is used. As shown in FIGS. 10 to 14, the hanging jig 10 includes a plurality of overlapping segments C sandwiched between brackets 12 </ b> A and 12 </ b> B (long sides) in the thickness direction and brackets 12 </ b> C and 12 </ b> D (short sides) in the width direction. ) And a rectangular frame 12 which is bound and bound. The frame 12 is provided on a bracket 12B (one long side), and includes a flange 12E on which the wire 20A of the chain block 20 is hung, and connection points of four brackets 12A to 12D. This connection point has a function of connecting the brackets so as to be separable and a hinge function of connecting the brackets so as to be relatively rotatable. The frame 12 is configured such that the bracket 12B provided with the flange 12E and the brackets 12C and 12D can rotate around the bolt 17 at the connection point in a state where the brackets are separated from each other at one connection point. ing.

  As a result, a plurality of segments C can be transported within the tunnel of the shield tunnel 1 while changing their postures in a state of being securely bundled in a vertical or horizontal direction (see FIGS. 15 to 21). The segments C can be easily bound or released (see FIG. 14).

  Further, in the hanging jig 10 according to the present embodiment, a pair of brackets 14 are provided on the bracket 12A (the other long side) so as to extend in the orthogonal direction, and wires 21A and 22A are provided at the tips of the brackets 14. A flange 14A is provided. As a result, the suspension jig 10 having a posture in which the frame 12 is vertical and the bracket 14 is horizontal, and the plurality of segments C in the vertical posture that are bound by the suspension jig 10 are maintained in that posture in the chain blocks 20, 21. , 22 (see FIGS. 17 and 18). And by rolling down the chain blocks 21 and 22, the suspension jig 10 and the plurality of segments C bound by the suspension jig 10 can be turned over so as to be in a horizontal posture (FIGS. 19 and FIG. 19). 20).

  Further, in the method of transporting the segment C in the shield construction according to the present embodiment, first, the plurality of segments C bound by the frame 12 of the lifting jig 10 are viewed in the long direction (the brackets 12A, 12A, 12B) are transported to the installation position of the chain block 20 in a posture where they are arranged side by side (see FIGS. 15 and 16). Next, the wire 20A of the chain block 20 is hung on the flange 12E of the bracket 12B, and the suspension jig 10 and the plurality of segments C bound by the suspension jig 10 are overturned while being suspended by the chain block 20 (FIG. 17). To FIG. 20). Next, the suspension jig 10 and the plurality of segments C bound by the suspension jig 10 are rotated around the wire 20A of the chain block 20 so that the plurality of segments C are oriented at the time of assembly (see FIG. 21 and FIG. 21). (See FIG. 22). Next, the hanging jig 10 is removed from the plurality of segments C by removing one bolt 17 of the frame of the hanging jig 10 and developing the frame 12 (see FIG. 14). Thereafter, the plurality of segments C are transported to the assembly position by the Telha crane 50 (see FIGS. 23 to 25).

  Here, in the tunnel of the shield tunnel 1, a belt having an inclined portion 2A extending obliquely upward from the vicinity of the shield machine 100 toward the wellhead and a horizontal portion 2B extending horizontally from the inclined portion 2A toward the wellhead in the upper portion of the well. A conveyor 2 and a rear carriage 4 to be pulled by the shield machine 100 on the wellhead side from the chain block 20 are installed. Therefore, in the method for transporting the segment C in the shield construction according to the present embodiment, the plurality of segments C bound by the lifting jig 10 are placed under the horizontal portion 2B of the belt conveyor 2 and next to the rear carriage 4 in the digging direction. The brackets 12A and 12B (long sides) of the frame 12 are transported in a posture where they are arranged side by side. In addition, the plurality of segments C bundled by the hanging jig 10 are conveyed under the inclined portion 2A of the belt conveyor 2 in an overturned posture and an orientation at the time of assembly.

  As a result, in the narrow tunnel where the belt conveyor 2 and the rear carriage 4 and the like in the shield tunnel 1 having a small cross section are installed, the bundled segments C can be efficiently transported from the well entrance side to the assembly position.

  Further, in the method for transporting the segment C in the shield construction according to the present embodiment, the chain block 20 is installed so as to be able to move between the inside and the outside of the transport paths of the plurality of segments C (see FIG. 8 and FIG. 8). (See FIG. 9). Here, the chain block 20 is swung on the side portion of the belt conveyor 2 via the swiveling jib 30 between the position below the belt conveyor 2 (inside the conveyance path) and the position away from the position outward in the downhole width direction. It is installed so that it can. Before the plurality of segments C bound by the lifting jig 10 are transported to the installation position of the chain block 20, the chain block 20 is arranged outside the transport path, and the plurality of segments bound by the hanging jig 10 is arranged. After transporting C to the installation position of the chain block 20, the chain block 20 is moved into the transport path (that is, below the belt conveyor 2).

  Thereby, the plurality of segments C bound by the hanging jig 10 can be conveyed to the installation position of the chain block 20 without causing interference with the chain block 20. And after conveyance, the several segment C bundled with the hanging jig | tool 10 can be lifted by the chain block 20 under the belt conveyor 2. FIG.

  Further, in the method of transporting the segment C in the shield construction according to the present embodiment, the hanging jig 10 in a posture in which the frame 12 is vertical and the bracket 14 is horizontal, and a plurality of vertical postures bound by the hanging jig 10 are provided. The segment C is lifted by the chain blocks 20, 21, and 22 in the posture (see FIGS. 17 and 18). Then, by rolling down the chain blocks 21 and 22, the hanging jig 10 and the plurality of segments C bound by the hanging jig 10 are turned over so as to be in a horizontal posture (see FIGS. 19 and 20). . As a result, after the plurality of segments C bound by the hanging jig 10 are conveyed in a vertical posture, they can be turned over so as to be safely in a horizontal posture.

  In addition, the above-mentioned embodiment is for making an understanding of this invention easy, and does not limit this invention. It goes without saying that the present invention can be changed and improved without departing from the gist thereof, and that the present invention includes equivalents thereof. For example, in the above-described embodiment, all of the four connection points of the brackets 12A to 12D in the frame 12 are the hinge part and the detachable connection part, but at least one connection point is the hinge part, What is necessary is just a connection part in which one connection point is separable.

  In the above-described embodiment, the hanging jig 10 used in the construction of the shield tunnel 1 having a small cross section is taken as an example. However, the hanging jig according to the present invention is used in the construction of the shield tunnel 1 having a large cross section. May be. Furthermore, in the above-described embodiment, the shield work by the mud pressure shield method is taken as an example, but the present invention can also be applied to the shield work by the muddy water shield method. Here, in the shield work by the muddy water shield method, the screw conveyor 101 in the shield machine 100 and the belt conveyor 2 in the vicinity of the shield machine 100 are not installed, so the segment C is closer to the assembly position of the segment C than in the above embodiment. Can be transported in a state of being bound by the hanging jig 10. Accordingly, the segment C can be assembled without removing the segment C from the hanging jig 10 in the vicinity of the assembly position and then transporting it.

1 Shield tunnel, 2 belt conveyor, 2A inclined section, 2B horizontal section, 2C channel steel, 3 segment supply conveyor, 4 rear carriage, 5 tow bar, 6 carriage, 7 rail, 8 rail, 9 wire, 10 lifting jig, 12 frame, 12A bracket, 12B bracket, 12C bracket, 12D bracket, 12E flange, 12F flange, 14 bracket, 14A flange, 15 bolt, 16 nut, 17 bolt, 18 nut, 20 chain block, 20A wire, 21 chain block, 21A wire, 22 chain block, 22A wire, 30 swiveling jib, 32 fixed part, 32A upper part, 32B shaft part, 32C enlarged diameter part, 34 rotating part, 34A cylinder part, 34B arm part, 34C Ivor , 50 Telha crane, 52 rail, 54 hoist, 100 shield machine, 101 screw conveyor, 102 Electa

Claims (5)

A plurality of overlapping segments are provided with a rectangular frame that is bound with a long side in the thickness direction and bound with a short side in the width direction,
The frame is
A suspension member hanging portion provided on one of the long sides and on which a suspension member of a lifting device is hung;
At least one hinge portion;
And at least one separable connecting portion,
The frame is configured to be used in shield construction, wherein the frame is configured such that a portion including the one long side can be rotated around the hinge portion in a state where the connecting portion is separated. Hanging jig for use.   It is provided with a bracket provided on the other long side so as to extend on both sides in the crossing direction, and provided with a second hanging material hanging portion on which the hanging material of the lifting device is hung on both sides in the longitudinal direction. A hanging jig for a segment used in shield construction according to claim 1. A method of transporting a segment by shield construction using the hanging jig according to claim 1 or 2,
Transporting a plurality of segments bound by the frame to the installation position of the suspension device in a posture in which the long sides of the frame are arranged side by side when viewed in the excavation direction;
Hang the suspension material of the suspension device on the suspension material hanging portion of the long side, the step of overturning the plurality of segments and the suspension jig in a state of being suspended by the suspension device;
Rotating the plurality of segments and the suspension jig around the suspension member of the suspension device to make the plurality of segments in an orientation during assembly; and
Removing the suspension jig from the plurality of segments. A method for transporting segments in shield construction. The suspension device is installed so as to be able to move between the inside and outside of the transport path of the plurality of segments,
Before the plurality of segments bound by the frame are transported to the installation position of the suspension device, the suspension device is disposed outside the transport path, and the plurality of segments bound by the frame are disposed on the suspension device. The method for transporting segments in shield construction according to claim 3, wherein the suspension device is moved into the transport path after transporting to an installation position. In the pit, there is a belt conveyor having an inclined portion extending obliquely upward from the vicinity of the shield machine to the pit side, a horizontal portion extending horizontally from the inclined portion to the pit side in the upper portion of the pit, and the pit side on the pit side from the suspension device. A rear carriage pulled by the shield machine is installed,
The plurality of segments bound by the frame are conveyed in a posture in which the long sides of the frame are arranged side by side when viewed in the digging direction under the horizontal portion of the belt conveyor and next to the rear carriage,
5. The shield according to claim 3, wherein the plurality of segments bundled by the frame are conveyed in a tilted posture and an assembly direction under the inclined portion of the belt conveyor. How to transport segments during construction.

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