JP2005113593A - Segment assembling device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a segment assembling device capable of facilitating assembly of segments when assembling segments on an internal wall face of a tunnel having different shape cross sections. <P>SOLUTION: This segment assembling device 8 for assembling segments along the internal wall face of the tunnel having rectangular cross section and excavated by a shield machine 1 is provided with a ringlike rotary body 35 provided rotatably in a vertical face in a barrel body 2, a pair of cylinder devices 38 for travel supported around a horizontal shaft core at left and right positions of the rotary body so as to swing, a segment holding body 40 whose both end parts are connected with tip parts of rods 38a for retraction of both cylinder devices by pins, respectively, and a cylinder device 41 for adjusting attitude of the cylinder device on one side provided in the rotary body. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a segment assembling apparatus provided in a shield machine.

  When a segment is assembled on the inner wall surface of a tunnel after a tunnel having a rectangular cross section is excavated by a shield machine, it is usually performed by a segment assembling device provided at the rear of the shield machine.

  By the way, as a segment assembling apparatus that arranges segments on the inner wall surface of a normal circular tunnel, for example, a rotating ring body arranged in a shield body is provided with a holding body capable of holding the segment. The body is provided so as to be movable in two axial directions orthogonal to the rotating ring body in the vertical plane.

When this type of assembly device is used for a rectangular tunnel, the orientation of the segment with respect to the corner portion is determined by holding the holding body with a pair of left and right cylinder devices in consideration of attachment to the corner portion. Is easy to adjust (see, for example, Patent Document 1).
Japanese Patent No. 2584378 (see FIG. 1)

  By the way, according to the segment assembling apparatus described above, the central portion of the segment holding body is supported by the pair of left and right cylinder devices, that is, because the four points are connected by pins, the segment posture is There is a problem that it is not determined, that is, it is difficult to adjust the posture when the segment is arranged in the corner portion.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a segment assembling apparatus that can be easily assembled when assembling a segment on an inner wall surface of a tunnel having an irregular cross section.

In order to solve the above-mentioned problems, a segment assembling apparatus according to claim 1 of the present invention is a segment assembling apparatus for assembling a segment along an inner wall surface of a tunnel having an irregular cross section excavated by a shield machine. And
A ring-shaped rotating body that is rotatably provided in a vertical plane within the shield machine, a pair of cylinder devices that are supported at the left and right positions of the rotating body around a horizontal axis, and both A segment holding body whose both ends are pin-connected to the distal end of the rod for withdrawal of the cylinder device, and a cylinder device for posture adjustment for adjusting the posture of the at least one cylinder device provided on the rotating body; Is provided.

  Further, a segment assembling apparatus according to claim 2 is the assembling apparatus according to claim 1, wherein a swivel strut body provided within the shield machine main body so as to be able to swivel 90 degrees in a horizontal plane by a swiveling drive device, A cylindrical body provided on the swivel strut body in a vertical direction via a connecting member, a retracting member provided on the cylindrical body so as to be freely retractable from an upper and lower end portion thereof, and disposed on the cylindrical body side. It comprises an inner wall surface expansion device comprising a cylinder device for withdrawing and withdrawing both the withdrawing members.

  A segment assembling apparatus according to claim 3 is a segment assembling apparatus for assembling a segment along an inner wall surface of a tunnel having an irregular cross section excavated by a shield machine, and is vertically installed in the shield machine main body. A ring-shaped rotator that is rotatably provided in the plane, a pair of cylinder devices supported so as to be swingable around a horizontal axis center at the left and right positions of the rotator, and a retracting rod of both the cylinder devices A segment assembling apparatus comprising a segment holding body whose both ends are pin-connected to the tip of each of the above and a posture adjusting cylinder device for adjusting the posture of the at least one cylinder device provided on the rotating body, A plurality of sets are arranged in the same vertical plane and at least one set is configured to be movable in the left-right direction.

  Further, the segment assembling apparatus according to claim 4 is swiveled 90 degrees in a horizontal plane by a turning drive device in the shield machine body between adjacent segment assembling apparatuses arranged in the assembling apparatus according to claim 3. A swivel strut body provided freely, a cylindrical body provided on the swivel strut body in a vertical direction via a connecting member, and a retreating / retracting provided on the tubular body so as to be freely retractable from its upper and lower ends. An inner wall surface expanding device is arranged which includes a member and a cylinder device for exiting and retracting that is disposed on the cylindrical body side and retracts the both retracting members.

  According to the configuration of the segment assembling apparatus according to the first aspect, the segment holding body is attached to the rotating body rotatably provided in the vertical plane via the pair of cylinder devices swingably provided in the radial direction. Since it is provided so that it can move freely and its posture can be changed arbitrarily, and it is equipped with a posture adjusting cylinder device that can adjust the posture of one of the cylinder devices, the segment is moved to a predetermined assembly site to obtain a predetermined position. The posture of the segment can be finely adjusted by the posture adjusting cylinder device, so when assembling the inner wall body of the rectangular tunnel, particularly in the corner portion. Ideal for assembling L-shaped segments.

  According to the configuration of the inner wall surface expanding device according to the second aspect, when attaching the column material to the central portion of the rectangular tunnel having a long width, the swivel column body is rotated so that the cylindrical body is positioned between the upper and lower segments. After that, since the retractable member is protruded from the cylindrical body so as to push the space between the segments, the column material can be easily attached.

  According to the configuration of the segment assembling apparatus according to claim 3, a plurality of segment assembling apparatuses are arranged in the shield machine main body and at least one set is movable in the left-right direction. It is possible to easily assemble the segments between the assembling apparatuses.

  According to the configuration of the segment assembling apparatus according to the fourth aspect, since the inner wall surface expanding device is arranged between the adjacent segment assembling apparatuses, the assembling work of the pillar body required when the tunnel is long horizontally is performed. Can be done easily and quickly.

[Embodiment]
Hereinafter, a segment assembling apparatus provided in a shield machine according to an embodiment of the present invention will be described with reference to the drawings.

  The segment assembling apparatus according to the present embodiment is for constructing an inner wall body of a rectangular (rectangular) tunnel having an irregular cross section, for example, a cross section elongated in the width direction (horizontal direction).

First, a shield machine will be described with reference to FIGS.
As described above, the shield machine 1 is for excavating a rectangular (rectangular) tunnel whose cross section is elongated in the width direction (horizontal direction), and has a rectangular shape whose section is elongated in the width direction. A tunnel with a square cross section is excavated at the front of the main body of the shield machine, that is, the front of the fuselage 2 with four rows (2 rows × 4 rows = 8 units) on the left and right in the width direction. The small shield excavator 11 to be obtained is arranged so as to be movable in the front-rear direction, that is, to be able to move out of the front.

  In particular, the fuselage 2 crosses two points on the ground and close to the ground surface, for example, so that it intersects three-dimensionally on the road, that is, the deepest part is arcuate and the overall shape is "<". The front body 2a is connected to the front body 2a so as to be able to excavate the shape of the tunnel through a connecting tool (not shown, but a horizontal connection pin is used, for example) so as to be swingable in a vertical plane. The rear trunk portion 2b is configured so that the upper and lower directions of the front barrel portion 2a relative to the rear barrel portion 2b can be changed by the middle folding jack 3. In addition, many shield jacks 4 for the excavator main body for advancing the trunk | drum 2 are provided in the rear trunk | drum 2b side.

  And in the front trunk | drum 2a of the fuselage | body 2 of the shield machine 1, the partition plate material 5 for guiding the circumference | surroundings so that each shield excavation apparatus 11 can be withdrawn / moved in the front-back direction (movable) is arrange | positioned. . The partition plate 3 has a front-view shape in which a horizontal plate 5a disposed in the center in the height direction and four space portions (eight spaces in total in the vertical direction) on the upper and lower surfaces of the horizontal plate 5a. Three vertical plates 5b are provided to form each. Of course, the shield excavation apparatus 11 is arrange | positioned in each said space part, respectively.

  By the way, the small shield excavators 11 respectively disposed in the space of the shield machine 1 utilize the operating principle of the triangle of the ruler, and rotate the cutter head in which three arms project radially. By doing so, a tunnel having a square cross section is excavated.

Here, a schematic configuration of the shield excavator 11 will be described.
The shield excavator 11 is supported and guided by a partition plate material 5 provided in the front trunk portion 2 a of the shield machine 1, and a pressure chamber 13 is formed by a partition wall material 12 a disposed at the front portion and a rotating plate body 16 described later. The shield excavator main body (hereinafter referred to as the excavator main body) 12 having a square cross-section formed by the digging device is provided between the excavator main body 12 and the front trunk portion 2a and in the vicinity of the four corners. Rotating in a vertical plane through a retracting cylinder device 14 for retracting and retracting 12 with a predetermined stroke L in the front-rear direction, and a bearing member (also provided with a sealing material) 15 at the front portion of the excavator body 12 A rotating plate body (rotating body) 16 that is freely provided and has a ring-shaped internal gear 16a provided on the outer peripheral side thereof, and is provided at a position eccentric from the rotation center of the rotating plate body 16 by a predetermined distance e. The excavator body 12 has a cutter head 18 in which the rotary shaft portion 18a is rotatably inserted (supported) in the through hole of the cylindrical member 17 and the same axis as the rotary axis of the rotary plate 16. An intermediate ring-shaped internal gear 19 fixed to the side, an external gear 20 fixed to the outer periphery of the rear portion of the cylindrical member 17 and meshing with the intermediate ring-shaped internal gear 19, and the rotating plate body 16 are A plurality of rotational drive devices (for example, a hydraulic motor and an electric motor are used) 21 are configured to rotate in a predetermined direction via a pinion that meshes with a ring-shaped gear 16a provided on the surface.

  When the rotary plate member 16 is rotated in a predetermined direction by the rotation driving device 21, the rotary shaft portion 18a inserted through the cylindrical member 17 has a radius e and the rotation center of the rotary plate member 16 (of the excavator body 12). The outer gear 20 fixed to the rotating shaft portion 18a meshes with the ring-shaped inner gear 19 and is rotated in the opposite direction to the rotating plate 16 at this time.

  The cutter head 18 has a rotating shaft portion 18a rotatably inserted into the through hole of the cylindrical member 17, and a front end portion of the rotating shaft portion 18a that protrudes radially at 120 degree intervals. As described above, the cutter head 18 is rotated about the rotation axis and in the reverse direction while the rotary plate 16 rotates once in a predetermined direction by the gear transmission mechanism as described above. The cutter head 18 is configured to rotate three times in a predetermined direction with respect to the excavator body 12. That is, while the cutter head 18 rotates once, the rotary plate 16 rotates three times (revolves), and the tip of each arm-shaped cutter portion 18a moves in a square shape, so that a tunnel having a square cross section is excavated. Will be.

  Further, a screw type earth discharging device, for example, a screw conveyor 6 for discharging excavated earth and sand, is connected to the partition wall material 12a forming the pressure chamber 13 of each shield excavating device 11, and each of these screw conveyors 6 is connected. Further, a sediment pressure feeding device (for example, a pressure feeding pump is used) 7 for conveying the excavated sediment discharged from the screw conveyor 6 to the outside is connected.

  A segment assembling apparatus 8 for assembling the segment S along the inner wall surface of the tunnel is disposed on the rear trunk portion 2b of the shield machine 1, and since the cross-sectional width of the tunnel is long, Two sets are arranged (in FIG. 3, only the assembly device on the left side as viewed from the rear is shown).

Hereinafter, the segment assembling apparatus 8 according to the present invention will be described.
As shown in FIGS. 1 and 3, the segment assembling apparatus 8 is attached to an annular support member 9 having a rectangular shape when viewed from the front for attaching the shield jack 4 provided along the rear inner peripheral surface of the rear trunk portion 2b. The frame body 33 having a rectangular shape when viewed from the front through the guide rollers 31 and 32 and a support roller 34 provided inside the frame body 33 are rotatably supported in a vertical plane. The ring-shaped rotator 35 and a U-shaped mounting member 35a provided on the inner side of the rotator 35 are supported at the left and right positions of the rear surface by a horizontal support shaft 36 so as to be swingable in a vertical plane. A pair of moving cylinder devices 38 provided on each of the pair of swing members 37, and both ends of the moving rod device 38a at both ends of the moving cylinder devices 38 via horizontal connecting pins 39 respectively. For example, it is provided between the segment holding body 40 that is connected and supported and can hold the segment S so as to be movable in two axial directions, and the one swinging member 37 and the rotating body (mounting member 35a) 34 side. The cylinder device 38 is fixed to the one swinging member 37, and includes a posture adjusting cylinder device 41 for adjusting, in particular, finely adjusting the posture of the cylinder device 38.

  The segment holding body 40 includes, for example, a moving member 42 provided on a support shaft portion 39a extending on the same axis as the horizontal connecting pin 39 so as to be movable in the front-rear direction, and the moving member 42 A segment connecting member 44 guided by a pair of guide shafts 43 provided in a direction orthogonal to the moving direction and provided so as to be movable in the left-right direction, and a forward / backward moving cylinder device for moving the moving member 42 in the front-rear direction. 45 and a cylinder device 46 for moving left and right for moving the segment connecting member 44 in the left-right direction.

Next, the assembly work of the segment S will be described.
When assembling the segment S on the inner wall surface of the rectangular tunnel excavated by the shield machine 1, as shown in FIGS. 6 and 7, the ring-shaped rotating body with the segment S held by the segment holding body 40 35 is rotated to move to the assembly position of the segment S, and the rod portions 38a of both the cylinder devices 38 are protruded to bring the segment S into a posture corresponding to the assembly site.

  At this time, depending on the rotational posture of the rotating body 35, the posture of the segment holding body 40 changes depending on its weight, but the posture adjusting cylinder device 41 is operated so that the segment S is maintained in the correct posture or becomes the correct posture. Tweaked to

  Further, the posture of the segment S is roughly determined by the both cylinder devices 38, and the posture adjusting cylinder device 41 is actively driven to perform fine adjustment so that the segment S has a more accurate posture. It may be.

  Then, after operating the forward / backward moving cylinder device 45 and the left / right moving cylinder device 46 to move the segment S to the assembly position, the segment S may be fixed to the existing segment by the connecting bolt.

  Further, between the upper and lower portions of the intermediate portion of the annular support member 9 near the left segment assembling apparatus 8, an inner wall surface for widening the space between the upper and lower portions when attaching the column members SP between the annularly assembled segments S. An expansion device 51 is provided.

  As shown in FIGS. 4 and 5, this inner wall surface expanding device 51 is a swivel strut body that can be swung in a horizontal plane on a rectangular annular support member 9 via upper and lower swivel pins 52 and arranged in the vertical direction. 53, a turning cylinder device (turning drive device) 54 for turning the turning strut body 53, and an expansion / contraction cylinder device 55 provided at an up / down position in the middle of the turning strut body 53. A cylindrical body 56, an extension rod-like retracting member 57 disposed in the upper and lower portions of the cylindrical body 56, and a rod-like member retracting both the same. The cylinder device 58 is used to move the member 57 in and out.

  By the cylinder device for turning 54, the cylindrical body 56 provided on the turning support body 53 turns 90 degrees between the storage position (A) on the annular support member 9 side and the use position (B) on the segment S side. Is done.

  Therefore, when attaching the strut material SP between the upper and lower segments S arranged on the inner wall surface of the tunnel, the swiveling strut body 53 is first swung by the swiveling cylinder device 54 and the cylindrical body is swung by the telescopic cylinder device 55. After moving 56 to the segment S side, the cylinder device 58 for withdrawal is actuated to project the upper and lower rod-like withdrawal members 57 to expand between the segments S. In this state, the support material SP may be attached.

  In FIG. 3, only the left side of the segment assembling apparatus 8 is shown when viewed from the rear. Of course, a similar segment assembling apparatus is also arranged on the right side, and at least one (one set) is arranged. What is necessary is just to be comprised so that a movement in the left-right direction is possible. This movement is made possible to attach the intermediate segment S in the upper wall portion and the lower wall portion, and either one of the assembling apparatuses may be used.

  Here, with reference to FIG. 8, a brief description will be given of an operation for constructing a tunnel in a shallow portion close to the ground surface between two points separated by a predetermined distance on the ground side by the shield machine 1. deep.

First, excavation of the tunnel T is started by the shield machine 1 from one excavation position P1 on the ground side.
That is, at one excavation position P1, after the shield machine 1 is installed at a shallow position where the tunnel machine 1 can start excavation of the tunnel, excavation is started with a gentle slope.

  When starting the excavation, first, the shield excavator 11 disposed on both sides is excavated prior to the shield excavator 11 in the other intermediate portion, and then the remaining shield excavators 11 are used. Excavation is performed.

  Further, during excavation, adjustment of the direction of excavation of the shield machine 1 is performed by the folding jack 3 and the shield jack 4 for the main body of the excavator, and for fine adjustment, the pressure of the upper or lower shield excavator 11 is used. It is also carried out by adjusting the amount of soil discharged in the chamber 13 and / or the amount of the excavator body 12 withdrawing / withdrawing by the cylinder device 14 for withdrawal.

  In this state, excavation is continued, and in the vicinity of the deepest part, excavation is performed with an arc shape having a large radius of curvature from a straight line. Can be connected by a tunnel T having a "<" shape (partially an arc shape) close to the ground surface. That is, it is possible to easily excavate a new tunnel that is under the existing road.

Of course, in accordance with the excavation of the shield machine 1, the segment assembling device 8 sequentially assembles the segments S to construct the tunnel inner wall body.
According to the configuration of the segment assembling apparatus 8 described above, the segment holding body 40 is attached to the ring-shaped rotating body 35 that is rotatably provided in the vertical plane via the pair of moving cylinder devices 38 that are swingably provided. Since it is provided so that it can move in the radial direction and its posture can be arbitrarily changed, and is provided with the posture adjusting cylinder device 41 that can adjust the posture on the one moving cylinder device 38 side, the segment S Since it can be easily and reliably maintained in a predetermined posture by being moved to a predetermined assembly site, and the posture of the segment S can be finely adjusted by the posture adjusting cylinder device 41, the inner wall of the rectangular tunnel It is most suitable when assembling the body, particularly when assembling the L-shaped segment S in the corner.

  In addition, according to the configuration of the inner wall surface expanding device 51 described above, when the column material SP is attached to the central portion of the rectangular tunnel having a long width, the swivel column body 53 is swung to move the cylindrical body 56 between the upper and lower segments S. Since the rod-like extending / retracting member 57 is projected from the cylindrical body 56 and pushed between the segments S after being positioned at the position, the column member SP can be easily attached.

  By the way, in the above-described embodiment, it has been described that the posture of the cylinder device 38 fixed to one swinging member 37 is adjusted by the posture adjusting cylinder device 41. It is also possible to provide a posture adjusting cylinder device.

  Moreover, in the said embodiment, although two sets of segment assembly apparatuses were arrange | positioned at the rear part of the fuselage 2 of the shield machine 1, three or more sets may be arranged, and in this case, they are arranged adjacent to each other. One of the two sets may be configured to be movable in the left-right direction, and the inner wall surface expanding device may be arranged between two sets arranged adjacent to each other.

  In the above embodiment, a description has been given of a rectangular (rectangular) tunnel as an irregularly shaped tunnel. However, the present invention can be applied to a tunnel having a saddle shape or an elliptical shape, for example.

It is sectional drawing of the shield machine which concerns on Embodiment 1 of this invention. It is an AA arrow line view of FIG. It is a BB (partial CC arrow view is included) arrow view of FIG. It is a side view of the segment assembly apparatus in the shield machine. FIG. 6 is a DD arrow view of FIG. 4. It is a side view explaining the segment assembly operation | movement by the same segment assembly apparatus. It is a side view explaining the segment assembly operation | movement by the same segment assembly apparatus. It is a schematic sectional drawing explaining the excavation work of the tunnel in the shield machine.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Shield machine 2 Body 2a Front body 2b Rear body 5 Partition plate material 11 Shield excavation apparatus 12 Shield excavation apparatus main body 13 Pressure chamber 14 Retracting cylinder apparatus 18 Cutter head 18a Rotating shaft part 18b Arm-shaped cutter part 35 Ring shape Rotating body 38 Cylinder device for movement 40 Segment holder 41 Cylinder device for posture adjustment 51 Inner wall surface expansion device 52 Rotating pin 53 Rotating strut body 54 Rotating cylinder device 55 Telescopic cylinder device 56 Cylindrical body 57 Expansion rod-like retracting member 58 Cylinder device for exit and exit

Claims (4)

A segment assembling apparatus for assembling a segment along an inner wall surface of a tunnel having a cross section excavated by a shield machine,
A ring-shaped rotating body that is rotatably provided in a vertical plane within the shield machine, a pair of cylinder devices that are supported at the left and right positions of the rotating body around a horizontal axis, and both A segment holding body whose both ends are pin-connected to the distal end of the rod for withdrawal of the cylinder device, and a cylinder device for posture adjustment for adjusting the posture of the at least one cylinder device provided on the rotating body; A segment assembling apparatus comprising:   A swivel strut body provided 90 degrees in a horizontal plane by a swivel driving device in the shield machine main body, a cylindrical body provided on the swivel strut body in a vertical direction via a connecting member, and the cylinder An inner wall surface expansion device comprising a retracting member provided on a cylindrical body so as to be freely retractable from an upper and lower end portion thereof, and a retracting and retracting cylinder device arranged on the cylindrical body side to retract and retract both the retracting members. The segment assembling apparatus according to claim 1, wherein the segment assembling apparatus is provided. A segment assembling apparatus for assembling a segment along an inner wall surface of a tunnel having a cross section excavated by a shield machine,
A ring-shaped rotating body that is rotatably provided in a vertical plane within the shield machine, a pair of cylinder devices that are supported at the left and right positions of the rotating body around a horizontal axis, and both A segment holding body whose both ends are pin-connected to the distal end of the rod for withdrawal of the cylinder device, and a cylinder device for posture adjustment for adjusting the posture of the at least one cylinder device provided on the rotating body; A segment assembling apparatus comprising a plurality of segment assembling apparatuses arranged in the same vertical plane, and at least one set being movable in the left-right direction. Between the segment assembly devices arranged adjacent to each other, there is a swivel strut body that can be swiveled 90 degrees in a horizontal plane by a swivel drive device in the shield machine, and a connecting member is connected to the swivel strut body. A cylindrical body provided in the up and down direction, a retracting member provided on the cylindrical body so as to be freely retractable from the upper and lower ends, and the both retracting members disposed on the cylindrical body side. 4. The segment assembling apparatus according to claim 3, wherein an inner wall surface expansion device comprising an exit / retreat cylinder device is disposed.

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