JP4495424B2 - Segment cutting apparatus and method - Google Patents

Description

  In the present invention, a single tunnel formed by connecting a plurality of segments and a single tunnel formed in the same manner are adjacently arranged in parallel, and when these single tunnels are connected to each other, a part of the segments The present invention relates to a segment cutting device and a method thereof.

  In recent years, as a method for constructing a tunnel, a new method called an MMST (multi-micro shield tunnel) method has been proposed. This MMST method is a method of constructing a tunnel by connecting a plurality of single tunnels constructed by a shield machine to form an outer shell of the tunnel and excavating the soil inside the tunnel. Such an MMST method is described in Non-Patent Document 1 and the like.

  A procedure for constructing a tunnel by the MMST method will be described with reference to FIGS. 8 and 9.

  FIG. 8 shows a front sectional view of the tunnel. An outer shell 201 of the tunnel 200 includes a plurality of single tunnels 202 and a connection unit 203 that connects the single tunnels 202 to each other. Each single tunnel 202 is constructed by connecting a plurality of cylindrical segments in the axial direction of a hole in a hole excavated by a small shield machine. A plurality of single tunnels 202 are constructed in parallel and adjacent to each other at a predetermined distance from other single tunnels 202.

  When the single tunnels 202 are constructed, the single tunnels 202 are connected to form the outer shell 201 of the tunnel 200. With reference to FIG. 9, a method of connecting the single tunnels 202 adjacent in the vertical direction in the vertical direction will be described.

  First, as shown in FIG. 9A, the slide steel plate 204 is press-fitted to the side of the connection portion 203, so that the mountain is stopped and the water stop aid is surrounded by the slide steel plate 204 and the vicinity of the outside of the connection portion 203. By injecting into the soil 205, water around the connection portion 203 is stopped.

  Next, as shown in FIG. 9B, a segment on the lower surface of the single tunnel 202 disposed above the connection portion 203 is cut out, and the soil 206 in the range (connection portion) surrounded by the slide steel plate 204 is excavated. .

  And as shown in FIG.9 (c), a part of segment of the upper surface of the single tunnel 202 arrange | positioned under the connection part 203 is cut off. Thereafter, reinforcing bars are arranged in the connecting portion 203 to construct the reinforcing bar portion 207.

  Similarly, all the other connection parts 203 shown in FIG. 8 are also connected. By connecting the single tunnels 202 and placing concrete inside each of the single tunnels 202, the outer shell 201 of the strong tunnel 200 is formed. Thereafter, the soil inside 208 of the tunnel 200 is excavated and discharged.

  By the way, in the MMST method, it has been considered that the work of cutting the segments when connecting the single tunnels 202 is performed manually by an operator.

Tamura, two others, "Construction using MMST method", tunnel and underground, Civil Engineering Co., Ltd., March 1999, volume 30, number 3, p. 13-20

  However, if the operation of excising the above-mentioned segment is a manual operation by an operator, the efficiency is poor because there are many work locations (excision locations). In addition, when a part of the segment is cut out from the inside of the single tunnel, safety (securing strength) when the segment is cut becomes a big issue.

  Accordingly, an object of the present invention is to solve the above-mentioned problem, and a single tunnel formed by connecting a plurality of segments and a single tunnel formed in the same manner are arranged adjacent to each other, and these single tunnels are connected to each other. It is an object of the present invention to provide a segment cutting apparatus and method capable of efficiently and safely cutting a part of a segment when matching.

To achieve the above object, a first aspect of the invention, the outer consisting cylindrical body, provided on the inner surface of該Gaikaku rib structure formed by a horizontal rib longitudinally extending extension building vertical ribs and transverse member A segment cutting device for cutting a part of a segment of a single tunnel formed by connecting a plurality of segments, and arranged to be movable along a rail laid along the axial direction of the single tunnel is a first ablation unit for ablating the horizontal rib is movably arranged along a traveling direction behind the rail than the first ablation means, and a second ablation unit for ablating the outer, the first The excision means and the second excision means are moved along the rail, and the first excision means and the second excision means are arranged such that the first excision means faces the horizontal rib and the second excision means is the above-mentioned First Means a segment cutting device, wherein a and a driving means for positioning the working position facing the outer continuous and cutting portion of the horizontal rib excised.

According to a second aspect of the invention, the outer consisting cylindrical body, provided on the inner surface of該Gaikaku, a segment with a vertically extending building vertical ribs and the rib structure formed by a horizontal rib extending in the transverse direction thereof, a plurality A single tunnel formed in a connected manner and a single tunnel formed in the same manner are arranged adjacent to each other, and is a segment cutting device that cuts a part of a segment of an adjacent portion of the single tunnel. A first excision means for excising the horizontal rib , arranged to be movable along a rail laid along the axial direction, and arranged to be movable along the rail behind the first excision means in the advancing direction. is a second ablation unit for ablating the outer, the first ablation means and the second ablation means together move along the rail, the first ablation means and the second ablation means, said first Characterized in that and said dividing means opposite to the horizontal rib second ablation means and a traveling positioning means for positioning the working position facing the outer continuous and cutting portion of the horizontal rib excised is the first ablation means Is a segment cutting device.

According to a third aspect of the present invention, the first cutting means includes a gripping means for gripping the horizontal rib, a cutting means for cutting the horizontal rib gripped by the gripping means, and a horizontal rib cut by the cutting means. a segment cutting device according to claim 1 or 2 and a transfer means for transferring a predetermined position in the single tunnel gripping means for gripping the.

A fourth aspect of the present invention, described above with a second ablation means to separate the outer cut, any claims 1-3 comprising peeling means for transferring an outer shell that releases該剥in position within the single tunnel This is a segment cutting device.

A fifth aspect of the present invention is the segment cutting device according to the third or fourth aspect , further comprising conveying means for collecting the horizontal ribs and outlines transferred to the predetermined position and conveying them to the predetermined position. .

The invention of claim 6 includes a segment comprising an outer shell made of a cylindrical body, a rib structure formed on an inner surface of the outer shell and formed by a vertical rib extending in the vertical direction and a horizontal rib extending in the horizontal direction. A segment cutting method for cutting a part of a segment of an adjacent portion of the single tunnel, in which a single tunnel formed by connecting a plurality of single tunnels and a similarly formed single tunnel are arranged adjacent to each other. The segment cutting method is characterized in that only the horizontal rib is cut out while leaving the rib, and then the outline continuous with the cut portion is cut out to form an opening.

  According to the present invention, there is an excellent effect that segments can be cut automatically and safely.

  Preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

  The segment cutting device of the present invention is used for cutting a segment in the construction of a tunnel by the MMST method described in the section of “PRIOR ART”.

  Prior to the description of the segment cutting device of the present embodiment, a segment to be cut by the segment cutting device of the present embodiment will be described.

  A segment to be cut is shown in FIG. Fig.1 (a) is a partial front view of a segment, FIG.1 (b) is A arrow directional view of Fig.1 (a).

  The segment 1 to be cut is symmetrical, and only the right half of the segment 1 is shown in FIG. As shown in FIG. 1 (a), a segment 1 includes a skin plate (outer) 2 that forms a cylindrical body having a square cross section, a column 3 that is provided to support the skin plate 2 up and down, and each skin. And a rib structure 4 provided on the inner surface of the plate 2.

  As shown in FIG. 1 (b), the rib structure 4 is formed at vertical ribs 5 extending in the vertical direction between the flanges 7 formed at the upper and lower ends of the skin plate 2 and at the left and right ends of the skin plate 2. And a horizontal rib 6 extending laterally between the flanges 7.

  A single tunnel is formed by connecting a plurality of segments 1 in the hole excavated by the shield machine. It is assumed that similarly formed single tunnels are arranged in parallel to the side of the segment 1 (the right side in FIG. 1A). In this case, if the side surface portion (hatched portion in FIG. 1B) of the segment 1 is cut away, it can be connected to the adjacent single tunnel.

  By the way, since the vertical rib 5 supports the load which acts on the upper and lower surfaces of the segment 1, if the vertical rib 5 is cut off, a problem may arise in safety (ensurement of strength). On the other hand, the horizontal rib 6 receives a reaction force when the segment 1 is propelled by the propulsion jack in the axial direction of the single tunnel, and there is no problem in safety even if it is excised after the propulsion is completed.

  Therefore, the segment cutting device according to the present embodiment described later secures a working space for cutting the skin plate 2 by cutting the horizontal rib 6 into a square while leaving the vertical rib 5, and then the skin plate 2. Should be excised as much as possible. That is, the hatched portion in FIG.

  A schematic view of the segment cutting device of the present embodiment is shown in FIG.

  As shown in FIG. 2, the segment cutting device 11 moves in the axial direction of the segment (single tunnel), and also has a travel positioning device (travel positioning means) 12 that positions each device described later at a predetermined work position, A rib cutting device (first cutting means) 13 for cutting ribs, a skin plate cutting device (second cutting means) 14 for cutting the skin plate, and a skin plate peeling device (for peeling the skin plate) Peeling means) 15. The rib cutting device 13 also has a function as a transfer means for transferring the cut horizontal rib to a predetermined position of the segment (single tunnel).

  The segment cutting device 11 is disposed on a rail 17 that is laid along the axial direction of the segment (single tunnel) on the lower rib of the segment. On the rail 17, the traveling positioning device 12, the rib cutting device 13, the skin plate cutting device 14, and the skin plate peeling device 15 are arranged in this order from the front in the traveling direction indicated by the arrow. Each of these devices is connected to the respective front and rear devices, and can move integrally. The distances between the devices are connected with a predetermined interval determined based on the pitch of the lower ribs.

  Here, a direction parallel to the rail 17 (left-right direction in the figure) is defined as the front-rear direction. In addition, a direction orthogonal to the rail 17 (a rear / front method in the figure) is defined as a left-right direction. Hereinafter, the segment cutting device 11 will be described based on these definitions.

  Hereinafter, each apparatus which comprises the segment cutting device 11 is demonstrated in order.

  First, the traveling positioning device 12 will be described with reference to FIGS. 2 and 3.

  FIG. 3A is a side view of the travel positioning device 12, and FIG. 3B is a front view of the travel positioning device 12 viewed from the front in the traveling direction.

  As shown in FIG. 3A, the travel positioning device 12 includes a travel carriage 21 disposed on the rail 17. A frame 22 including a support 31 and a top plate 32 is fixed on the traveling carriage 21. Further, on the traveling carriage 21, a guide shaft group 23 composed of four guide shafts 33 arranged in the front, rear, left, and right extending upward from the traveling carriage 21 is provided with a gap left and right (see FIG. (Refer FIG.3 (b)). Each guide shaft group 23 is provided with a substantially rectangular lift 24 that can be raised and lowered along the guide shaft 33. The lift 24 is moved up and down by driving means (here, hydraulic cylinders) 25 fixed to the top plate 32 of the frame 22.

  Each lift 24 is provided with an arm 26 movably in the front-rear direction. The arms 26 are arranged at intervals in the vertical direction, are fixed to the two guide shafts 29 extending in the front-rear direction, and the front end portions of the guide shafts 29, and are substantially perpendicular to the guide shafts 29 and downward. And an extending plate 34. At the lower end portion of the plate 34, a hook portion 27 for engaging with the ribs R1, 2 provided at the lower portion of the segment is provided.

  The guide shaft 29 of each arm 26 is slidably accommodated in a guide housing 36 attached to the lifting platform 24. The arm 26 is moved in the front-rear direction by the driving means 35. In the present embodiment, the driving means 35 includes a rotating shaft (threaded shaft) 37 that is rotatably attached to the lifting platform 24 side, and a fixed shaft (threaded shaft) that is fixed to the arm 26 and hinges with the rotating shaft 37. ) 28 and a motor 30 that adjusts the length of the fixed shaft 28 that extends from the rotating shaft 37 by rotating the rotating shaft 37.

  The arm 26 moves up and down by raising and lowering the lifting platform 24 by the cylinder 25. In addition, the arm 30 moves in the front-rear direction by rotating the rotating shaft 37 by the motor 30.

  Hereinafter, the operation of the travel positioning device 12 will be described.

  First, it is assumed that the arm 26 is lowered and the hook portion 27 is engaged with the rib R1. Next, while raising the arm 26 upward, the arm 26 is moved forward by a predetermined interval (the same interval as the pitch of the lower ribs R1, 2). When the arm 26 is lowered at this position, the next rib R2 and the hook portion 27 are engaged.

  When the length of the fixed shaft 28 of the arm 26 is reduced while the rib R2 and the hook portion 27 are engaged, the traveling positioning device 12 is pulled forward on the rail by a predetermined distance. At the same time, the devices (13, 14, 15) connected to the rear of the travel positioning device 12 also move forward by a predetermined distance.

  In this way, the travel positioning device 12 moves by a predetermined distance in the axial direction of the segment (single tunnel) using the ribs R1 and R2 provided at a predetermined interval below the segment and travels. Each device (13, 14, 15) connected to the rear of the positioning device 12 is positioned at a predetermined work position.

  Next, the rib cutting device 13 will be described with reference to FIGS. 2 and 4.

  FIG. 4 is a front view of the rib cutting device 13 viewed from the rear in the traveling direction.

  As shown in FIG. 4, the rib cutting device 13 includes a traveling carriage 41 disposed on the rail 17. A balance weight 42 is provided on the side of the traveling carriage 41 (on the right side in the figure). A base 43 is provided on the traveling carriage 41 so as to be able to turn around an axis x. The base 43 is turned by a drive source (here, a motor) 44.

  Further, as shown in FIG. 2, a frame 45 including a support 46 and a top plate 47 is fixed on the traveling carriage 41. Two guide shafts 48 extend downward in parallel with the column 46 from the top plate 47 of the frame 45 and are fixed to the base 43. Each guide shaft 48 is provided with a lifting platform 51 that can be moved up and down along the guide shaft 48.

  Similarly, a rotating shaft 49 positioned between the two guide shafts 48 extends downward from the top plate 47 of the frame 45 in parallel with the column 46 and is rotatably provided on the base 43. The rotating shaft 49 is screwed with the lifting platform 51 and is rotated by a drive source (here, a motor) 50. When the rotating shaft 49 is rotated by the motor 50, the lifting platform 51 is moved up and down.

  As shown in FIG. 4, a torch support portion 52 extending in the left-right direction is provided at one end (left side in the drawing) of the lifting platform 51. Two guide shafts 53 are provided at the front end portion of the torch support portion 52 so as to extend in the front-rear direction. Each guide shaft 53 is provided with a torch back-and-forth moving base 55 so as to be movable in the front-rear direction along the guide shaft 53. The torch back-and-forth moving base 55 is screwed with a rotating shaft (threaded shaft) (not shown), and is moved in the front-rear direction by a drive source (here, a motor) 54 that rotates the rotating shaft.

  A guide shaft 56 extending in the left-right direction is provided on the lower surface of the torch back-and-forth moving base 55. The guide shaft 56 is provided with a torch left-right moving table 57 movably in the left-right direction along the guide shaft 56. The torch left-right moving table 57 is screwed with a rotating shaft (threaded shaft) (not shown), and is moved by a driving source (here, a motor) 65 that rotates the rotating shaft.

  A cutting means 58 for cutting the horizontal rib R extending in the left-right direction is provided below the torch left-right moving table 57. Here, the cutting means 58 is a gas torch, and is arranged with its tip (torch head) facing downward.

  Further, a clamp support portion 59 extending in the left-right direction is provided at one end (left side in the drawing) of the lifting platform 51 and below the torch support portion 52. The clamp support portion 59 is provided with two guide shafts 60 extending in the left-right direction. Each guide shaft 60 is provided with a clamp left / right moving base 61 movably in the left / right direction along the guide shaft 60. The clamp left / right moving base 61 is moved by a drive source (here, a hydraulic cylinder) 66.

  A gripping means (clamp) 62 for gripping the horizontal rib R is provided at the tip (left side in the drawing) of the clamp left / right moving base 61 so as to be freely opened and closed. The clamp 62 is opened and closed by a drive source (here, a hydraulic cylinder) 63 to grip or open the horizontal rib R. The clamp 62 is also provided so as to be rotatable by approximately 90 degrees downward from a position parallel to the clamp left / right moving base 61. The clamp 62 is rotated in the vertical direction by a drive source (here, a hydraulic cylinder) 64.

  The gas torch 58 and the clamp 62 are moved up and down by raising and lowering the lifting platform 51 by the motor 50. Further, the gas torch 58 is moved in the front-rear direction by moving the torch front-rear moving table 55 in the front-rear direction by the motor 54. Further, the gas torch 58 is moved in the left-right direction by moving the torch left-right moving table 57 in the left-right direction by the motor 65. And the clamp 62 is moved right and left by moving the clamp right-and-left moving stand 61 right and left by the cylinder 66.

  Hereinafter, the operation of the rib cutting device 13 will be described.

  First, the clamp 62 is raised (or lowered) to the same height as the horizontal rib R to be cut. Next, the clamp 62 is moved leftward to a position where the clamp 62 can grip the horizontal rib R. Next, the horizontal rib R is gripped by the clamp 62.

  Thereafter, the gas torch 58 is moved in the left direction and is brought close to the end portion of the upper surface of the horizontal rib R. Therefore, the gas torch 58 is operated, and the horizontal rib R is cut leftward (skin plate S side). When the gas torch 58 reaches just before the skin plate, the gas torch 58 is moved forward and the horizontal rib R is cut forward.

  When the gas torch 58 reaches a predetermined position (immediately before the front vertical rib or flange), the gas torch 58 is moved to the right and the horizontal rib R is cut to the right.

  When the gas torch 58 cuts the horizontal rib R to the end, the horizontal rib R is cut into a quadrangular shape. Therefore, the operation of the gas torch 58 is stopped and moved to the right, and the gas torch 58 is moved to a position away from the horizontal rib R.

  Thereafter, the clamp 62 is moved rightward, and the cut horizontal rib R held by the clamp 62 is moved rightward. Therefore, the base 43 is turned, and the cut horizontal rib R gripped by the clamp 62 is transferred inward of the segment (rightward in FIG. 4). When the clamp 62 is opened inside the segment and the clamp 62 is rotated downward, the cut horizontal ribs R are stacked at predetermined positions.

  As shown in FIG. 1B, when there are a plurality of horizontal ribs R to be cut in the vertical direction, all of the horizontal ribs R to be cut are cut in the same procedure as described above.

  In this way, the rib cutting device 13 cuts the horizontal rib with the gas torch 58 while holding the horizontal rib R with the clamp 62. Thereafter, the base 43 is turned, and the cut horizontal rib R is transferred to the inside of the tunnel.

  Next, the skin plate cutting device 14 will be described with reference to FIGS. 2 and 5.

  FIG. 5 is a front view of the skin plate cutting device 14 viewed from the rear in the traveling direction.

  As shown in FIG. 5, the skin plate cutting device 14 includes a traveling carriage 71 disposed on the rail 17. A frame 72 including a support column 73 and a top plate 74 is fixed on the traveling carriage 71.

  Two guide shafts 76 are fixed to the traveling carriage 71 so as to extend downward from the top plate 74 of the frame 72 in parallel with the column 73. Along the guide shaft 76, a lifting platform 77 is provided so as to be movable up and down in the vertical direction.

  An upper pulley 78 is provided on the top plate 74 of the frame 72, and a lower pulley 79 is provided on the traveling carriage 71. The lower pulley 79 is connected to a drive source (here, a motor) 81 that rotationally drives it. By rotating the lower pulley 79 by the motor 81, the chain 80 circulates between the upper pulley 78 and the lower pulley 79. The lifting platform 77 meshes with the chain 80 and is moved up and down by the motor 81.

  Two guide shafts 82 extending in the left-right direction are provided at one end (the front side in the drawing) of the lifting platform 77. A torch left-right moving base 83 is provided along the guide shaft 82 so as to be movable in the left-right direction. The torch left-right moving base 83 is connected to a drive source (here, a hydraulic cylinder) 84 between the two guide shafts 82, and is moved in the left-right direction by the hydraulic cylinder 84.

  As shown in FIG. 2, a torch support portion 87 extending in the front-rear direction is provided at one end (left side in the drawing) of the torch left-right moving base 83. Two guide shafts 85 extending in the front-rear direction are provided below the torch support portion 87. A torch back-and-forth moving table 86 is provided along the guide shaft 85 so as to be movable in the front-rear direction. The torch back-and-forth moving table 86 is screwed with a rotation shaft (threaded shaft) (not shown) provided between the two guide shafts 85 and is provided at one end (left side in the drawing) of the torch support portion 87. Further, it is moved in the front-rear direction by a drive source (here, a motor) 88.

  A cutting means 89 for cutting the skin plate S, which extends in the left-right direction (see FIG. 5), is provided below the torch back-and-forth moving table 86. Here, the cutting means 89 is a plasma torch, and is arranged with its tip (torch head) facing sideways.

  By circulating the chain 80 by the motor 81, the plasma torch 89 is moved up and down. Further, the plasma torch 89 is moved in the left-right direction by moving the torch left-right moving base 83 in the left-right direction by the hydraulic cylinder 84. Then, the plasma torch 89 is moved in the front-rear direction by moving the torch front-rear moving table 86 in the front-rear direction by the motor 88.

  Hereinafter, the operation of the skin plate cutting device 14 will be described.

  First, the plasma torch 89 is moved to the cutting start position (for example, the position shown in FIG. 2). Here, the plasma torch 89 is moved leftward to a distance that allows the skin plate S to be cut.

  Next, by operating the plasma torch 89 and moving the plasma torch 89 downward, the skin plate S is cut downward. Since the horizontal rib R is cut by the rib cutting device 13 described above, the plasma torch 89 can be moved in the vertical direction within a large range. When the plasma torch 89 reaches a predetermined position, the plasma torch 89 is moved backward to cut the skin plate S backward. When the plasma torch 89 reaches a predetermined position, the plasma torch 89 is moved upward and the skin plate S is cut upward. When reaching the same height as the cutting start position, the plasma torch 89 is moved forward, and the skin plate S is cut forward.

  When the plasma torch 89 reaches the cutting start position, the skin plate S is cut into a rectangular shape.

  As described above, the skin plate cutting device 14 cuts the skin plate S continuous with the horizontal rib R cut by the rib cutting device 13 with the plasma torch 89.

  Here, the skin plate S is integrated with the soil behind the skin plate S, and may not be peeled off during and after cutting by the skin plate cutting device 14. The reason for this is that the soil behind the skin plate S is injected with a water-stopping auxiliary agent and has viscosity, so that the skin plate S adheres to the soil behind. Therefore, in such a case, the skin plate peeling device 15 is used to peel the skin plate S from the rear soil.

  Next, the skin plate peeling apparatus 15 is demonstrated using FIG.2 and FIG.6.

  FIG. 6 is a front view of the skin plate peeling device 15 as seen from the rear in the traveling direction.

  As shown in FIG. 6, the skin plate peeling device 15 includes a traveling carriage 95 disposed on the rail 17. The traveling carriage 95 includes a rail clamp 96 for clamping the rail and preventing the vehicle from falling. Further, a balance weight 97 is provided on the side (right side in the drawing) of the traveling carriage 95. On the traveling carriage 95, a base 98 is provided so as to be rotatable around an axis Y. The base 98 is turned by a drive source (here, a motor) 99.

  On the base 98, a frame 100 extending upward from the base 98 is provided. On one side of the frame 100 (left side in the figure), four sets of skin plate adsorption / peeling portions 101 are provided in series in the vertical direction.

  The skin plate suction / peeling portion 101 includes a gripping means (here, a magnet) 102 for gripping (sucking) the skin plate S at the tip thereof. The magnet 102 is provided on the frame 100 via a telescopic rod 103 so as to be movable in the left-right direction. The magnet 102 is moved by a drive source (here, a hydraulic cylinder) 104 provided between the magnet 102 and the frame 100. The magnet 102 has a magnetic pole at one end (the left side in the figure), and the magnetic on / off cylinder 105 switches the magnetic force between ON and OFF.

  Hereinafter, the operation of the skin plate peeling apparatus 15 will be described.

  First, the magnet 102 is moved leftward and brought into contact with the skin plate S to be peeled off. Here, the magnetic force of the magnet 102 is switched to ON, and the magnet 102 is attracted to the skin plate S (skin plate S cut by the skin plate cutting device 14).

  Thereafter, the skin 102 is peeled from the soil by moving the magnet 102 in the right direction. At this time, since the rail 17 is sandwiched between the clamps 96, the skin plate peeling device 15 does not fall down. After the skin plate S is peeled off, the base 98 is turned approximately 180 degrees, and the peeled skin plate S is transferred to the inside of the segment.

  Here, by switching the magnetic force of the magnet 102 to OFF and releasing the skin plate S from the magnet 102, the cut skin plate S is loaded at a predetermined position.

  In this way, the skin plate peeling device 15 peels the skin plate S from the soil.

  The horizontal rib R and the skin plate S (hereinafter referred to as a cutting member) cut by the rib cutting device 13 and the skin plate cutting device 14 are loaded at a predetermined position (for example, the side of the rail) inside the segment (single tunnel). It will be done. The loaded cutting members may be collected by an operator, but the segment cutting device 11 further includes a cutting member conveying device (conveying means) for collecting cutting members as described below. May be.

  In the present embodiment, the cutting member transporting device is connected to the rear of the skin plate peeling device 15.

  The cutting member transport device will be described with reference to FIG.

  FIG. 7 is a front view of the cutting member transport device as seen from the rear in the traveling direction.

  As shown in FIG. 7, the cutting member transport device 16 includes a traveling carriage 111 disposed on the rail 17. On this traveling carriage 111, a storage container 112 for storing the cutting member P (the horizontal rib R and the skin plate S cut by the rib cutting device 13 and the skin plate cutting device 14) and the cutting member P are stored. And a collection unit 113 for loading the container 112.

  The collection unit 113 includes a support column 114 that extends upward from the traveling carriage 111, an arm 115 that is provided at the upper end of the support column 114, extends horizontally, a crane 116 that is provided at the tip of the arm 115, and the crane 116. Grasping means (here, a magnet) 117 for gripping (sucking) the cutting member P, which is moved in the direction, is provided.

  The arm 115 is rotatably provided around the axis of the support column 114. As the arm 115 rotates, the magnet 117 moves between the storage container 112 and the loading position of the cutting member P. The magnet 116 moves up and down by the crane 116.

  Hereinafter, operation | movement of the cutting member conveying apparatus 16 is demonstrated.

  First, the magnet 117 is lowered and the cutting member P is gripped (adsorbed). Next, the magnet 117 is raised upward to lift the cutting member P. When the arm 115 is rotated to move the magnet 117 above the storage container 112 to release the cutting member P (turning off the magnetic force), the cutting member P is loaded in the storage container 112.

  In this way, the cutting member transporting device 16 collects the cutting member P loaded at a predetermined position.

  As described above, the segment cutting device 11 of the present embodiment cuts the horizontal rib R and loads the cut horizontal rib R on the inside of the segment (single tunnel). Next, the segment cutting device 11 cuts the skin plate S and loads the cut skin plate S inside the segment (single tunnel). Next, the segment cutting device 11 collects the loaded cutting members P. Then, the segment cutting device 11 proceeds in the axial direction of the segment (single tunnel) by a predetermined interval (pitch of the lower ribs R1 and 2), and repeats the same operation.

  As described above, the segment cutting device 11 according to the present embodiment can continuously and automatically perform the segment cutting operation required for the new tunnel construction method called the MMST method for all the segments. Therefore, efficiency is good. Further, since the segment cutting device 11 and the method thereof leave the vertical ribs necessary for ensuring the strength without cutting, the segments can be safely cut.

  In addition, this invention is not limited to the above-mentioned embodiment, Various modifications can be considered.

  In the present embodiment, the traveling positioning device 12 uses the ribs R1 and R2 provided at the lower part of the segment to pull and position the subsequent devices (13, 14, 15, 16). The travel positioning device 12 may be provided with a separate drive source so that the travel positioning device 12 is self-propelled.

  The cutting means 58 and 89 are not limited to gas fusing or plasma fusing as long as they can cut the horizontal rib R or the skin plate S. The cutting means 58 and 89 may be determined in consideration of the thickness of the horizontal rib R or skin plate S to be cut.

  The gripping means 62, 102, and 117 need only be able to grip the horizontal rib R or the skin plate S, and are not limited to gripping by a magnet or a clamp.

  In the present embodiment, each device (12, 13, 14, 15, 16) is provided with a traveling carriage (21, 41, 71, 95, 111). Only a large traveling carriage may be provided, and the mechanism of each device (12, 13, 14, 15, 16) may be provided on the traveling carriage.

  Here, when the skin plate S is cut by the skin plate cutting device 14, the skin plate S may be peeled off from the soil behind. In such a case, the segment cutting device 11 may be further provided with a function of suppressing the peeling of the skin plate S, and the skin plate S may be cut while being suppressed to the soil behind. For example, it is conceivable to cut the skin plate S by the skin plate cutting device 14 while suppressing the skin plate S by a mechanism such as the skin plate suction / peeling unit 101 of the skin plate peeling device 15.

  The cutting member transport device 16 of the present embodiment is supposed to run on the same rail 17 as the other devices (12, 13, 14, 15). You may make it drive | work on a rail. In this way, the cutting member P gripped by the gripping means 62 and 102 can be directly loaded on the cutting member transporting device 16.

(A) is a partial front view of a segment. (B) is an A arrow view of Fig.1 (a). It is the schematic of the segment cutting device which shows suitable embodiment of this invention. (A) is a side view of a traveling positioning device. (B) is the front view of the traveling positioning apparatus seen from the front of the advancing direction. It is the front view of the rib cutting device seen from the back of the advancing direction. It is the front view of the skin plate cutting device seen from the back of the advancing direction. It is the front view of the skin plate peeling apparatus seen from the back of the advancing direction. It is a front view of the cutting member conveyance apparatus seen from the back of the advancing direction. It is front sectional drawing of a tunnel. (A) is the schematic for demonstrating the method of connecting the single tunnel adjacent to an up-down direction to an up-down direction. (B) is the schematic for demonstrating the method of connecting the single tunnel adjacent to an up-down direction to an up-down direction. (C) is the schematic for demonstrating the method of connecting the single tunnel adjacent to an up-down direction to an up-down direction.

Explanation of symbols

1 segment 2 skin plate (outer)
4 Rib Structure 5 Vertical Rib 6 Horizontal Rib 11 Segment Cutting Device 12 Travel Positioning Device (Travel Positioning Means)
13 Rib cutting device (first cutting means, transfer means)
14 Skin plate cutting device (second cutting means)
15 Skin plate peeling device (peeling means)
16 Cutting member transporting device (transporting means)

Claims (6)

And the outer consisting cylindrical body, provided on the inner surface of該Gaikaku, a segment with a rib structure formed in horizontal ribs longitudinally extending extension building vertical ribs and transverse, single tunnel formed by connecting a plurality A segment cutting device for cutting a part of a segment of
A first cutting means that is movably disposed along a rail laid along the axial direction of the single tunnel, and cuts the horizontal rib , and along the rail that is behind the first cutting means in the direction of travel. A second excision means , which is movably arranged , excises the outer shell , moves the first excision means and the second excision means along the rail, and includes the first excision means and the second excision means. The first excision means is opposed to the horizontal rib, and the second excision means is provided with a traveling positioning means for positioning the working position opposite to the outer contour continuous with the excised portion of the horizontal rib excised by the first excision means. A segment cutting device. And the outer consisting cylindrical body, provided on the inner surface of該Gaikaku, a segment with a rib structure formed in horizontal ribs longitudinally extending extension building vertical ribs and transverse, single tunnel formed by connecting a plurality And a single tunnel formed in the same manner, and is a segment cutting device for cutting a part of the segment of the adjacent portion of the single tunnel,
A first cutting means that is movably disposed along a rail laid along the axial direction of the single tunnel, and cuts the horizontal rib , and along the rail that is behind the first cutting means in the direction of travel. A second excision means , which is movably arranged , excises the outer shell , moves the first excision means and the second excision means along the rail, and includes the first excision means and the second excision means. The first excision means is opposed to the horizontal rib, and the second excision means is provided with a traveling positioning means for positioning the working position opposite to the outer contour continuous with the excised portion of the horizontal rib excised by the first excision means. A segment cutting device. The first excision means includes: gripping means for gripping the horizontal rib; cutting means for cutting the horizontal rib gripped by the gripping means; and gripping means for gripping the horizontal rib cut by the cutting means The segment cutting device according to claim 1, further comprising transfer means for transferring to a predetermined position in the single tunnel . The segment cutting device according to any one of claims 1 to 3, further comprising peeling means for peeling the outer shell cut by the second cutting means and transferring the peeled outer shell to a predetermined position in the single tunnel . The segment cutting device according to claim 3 or 4 , further comprising transport means for collecting the horizontal ribs and outlines transferred to the predetermined position and transporting them to the predetermined position . A single unit formed by connecting a plurality of segments each including an outer shell made of a cylindrical body, a rib structure formed on an inner surface of the outer shell and formed by a vertical rib extending in the vertical direction and a horizontal rib extending in the horizontal direction. A segment cutting method in which a tunnel and a similarly formed single tunnel are arranged adjacent to each other and cut a part of a segment of an adjacent portion of the single tunnel. First, a horizontal rib is left leaving a vertical rib. A segment cutting method characterized in that only an opening is cut out and then an outline continuous with the cut portion is cut to form an opening .

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