JP5011245B2 - Shield machine - Google Patents

Description

  The present invention relates to a shield machine equipped with a segment assembling apparatus.

  As shown in FIG. 16, the segment assembling apparatus 50 includes two segment holding mechanisms 51 and 52 for assembling a plurality of types of segments having different shapes. Specifically, the segment assembling apparatus 50 includes a support frame 54 that extends rearward from the swivel ring 53, and a first suspension beam 55 that extends in one of the diametrical directions and a second suspension beam 56 that extends in the other of the diametrical directions. The segment holding mechanisms 51 and 52 are provided side by side, and the segment holding mechanisms 51 and 52 for holding the segments at the tips of the suspension beams 55 and 56 are provided.

  In addition, in a large-diameter shield machine, a scaffolding device for bolting a segment assembled by the segment assembling apparatus is generally arranged behind the segment assembling apparatus, and a tunnel wall formed by assembling the segments. A shape holding device for holding the shape is arranged.

JP-A-9-189200 Japanese Patent Laid-Open No. 10-88990

  By the way, the shape holding device holds the tunnel wall up and down from the inside, and in the unlikely event that the tunnel wall is deformed, it does not have a function to restore the shape, so as much as possible It is preferable to install the tunnel wall close to the assembly position and before receiving the earth pressure.

  However, as described above, the segment assembling apparatus 50 including the first suspension beam 55 provided with the segment holding mechanism 51 on one end side in the diameter direction and the second suspension beam 56 provided with the segment holding mechanism 52 on the other end side. In this case, since the inner circumference side of the segment assembly position is occupied by the segment assembly device 50 over the entire circumference, the scaffold device cannot be advanced to the segment assembly position, and the shape holding device is sufficiently close to the segment assembly position. There is a problem that the assembly work of the segments is not easy.

  In addition, when the segment is delivered to the segment assembling apparatus 50 using a hoist, the segment is temporarily placed on the same ring as the segment assembling position, but the hoist cannot be advanced to the segment assembling position for the same reason as described above. There were also challenges.

  Therefore, an object of the present invention is to provide a shield machine capable of solving the above problems and easily assembling a plurality of types of segments having different shapes.

  In order to solve the above problems, the present invention provides a rotating frame that rotates coaxially within a shield frame, a support frame that extends rearward in the digging direction is provided on the rotating frame, and the support frame extends in one of the diametrical directions. A first suspension beam is provided so as to be movable in the radial direction, and a second suspension beam extending in the other radial direction is provided on the support frame behind the first suspension beam so as to be movable in the radial direction. In addition, a first segment holding mechanism for holding the segment is provided, and a second segment holding mechanism for holding another type of segment different in shape from the segment is provided at the tip of the second suspension beam. In the shield machine constituting the segment assembling apparatus, at least one of the first segment holding mechanism and the second segment holding mechanism extends rearward. Via a sliding frame in which is movable in a working position protruding to the rear and front of the retracted position.

  A scaffold device for bolting the segment assembled by the segment assembling device is provided behind the segment assembling device so as to be movable forward, and a shape of a tunnel wall formed by assembling the segments is provided behind the scaffold device. It is preferable that a shape holding device for holding the frame is provided so as to be movable forward, and when the scaffold device is moved forward, the sliding frame is moved forward to retract the segment holding mechanism from the scaffold device.

  In addition, a hoist for placing the segment on an existing segment on the same ring as the segment assembly position is provided to deliver the segment to the segment assembling apparatus, and when the hoist places the segment on the existing segment, the sliding frame is The segment holding mechanism may be retracted from the hoist by moving it forward.

  The segment holding mechanism may include a segment holding portion that is formed so as to be movable back and forth so as to adjust the held segment to a predetermined assembly position and hold the segment.

  According to the present invention, multiple types of segments having different shapes can be easily assembled.

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

  As shown in FIG. 1, the shield machine 1 includes a segment assembly device 3 for assembling the segment 2, and a segment 2 assembled at the rear position of the segment assembly device 3 and assembled by the segment assembly device 3. And a shape holding device 6 for holding the shape of the tunnel wall 5 formed by assembling the segment 2 so as to be movable forward in the rear position of the scaffold device 4.

  The segment assembling apparatus 3 is provided in the shield frame 7 and rotates on the same axis, a support frame 9 provided on the swivel frame 8 so as to extend rearward in the digging direction, and movable in the radial direction of the support frame 9 A first suspension beam 10 extending in one of the diametrical directions, a second suspension beam 11 extending in the radial direction on the support frame 9 behind the first suspension beam 10 and extending in the diametrical direction, The first segment holding mechanism 57 is provided at the tip of the hanging beam 10 and holds the segment 2, and the second segment holding mechanism 58 is provided at the tip of the second hanging beam 11 and holds the segment 2. Yes.

  The swivel frame 8 is formed in an annular shape and is rotatably supported by a ring girder 14 provided on the inner peripheral surface of the shield frame 7 via a support roller 15. The revolving frame 8 has a drive gear 16 at the front portion in the axial direction, and a drive pinion of a motor (not shown) is engaged with the drive gear 16 and is driven to rotate. The ring girder 14 is provided with a shield jack 17 that takes the reaction force of the segment 2 after being assembled into a ring shape and advances the shield frame 7.

  A pair of support frames 9 are provided at intervals of 180 degrees in the circumferential direction at the rear of the revolving frame 8.

  As shown in FIG. 2, the first suspension beam 10 is hung between guide pillars 18 that are slidably inserted in the support frame 9 in the diameter direction of the shield frame 7 and between one ends of the guide pillars 18. It is formed in a U-shape from the connecting frame portion 19 provided to be transferred, and is moved in the tunnel radial direction by a jack 20 interposed between the connecting frame portion 19 and the support frame 9. .

  The connecting frame portion 19 of the first suspension beam 10 is provided with a first segment holding mechanism 57 having a vacuum type first segment holding portion 12. The first segment holding mechanism 57 includes a guide rod 21 provided in the connecting frame portion 19 so as to extend in the front-rear direction, a first segment holding portion 12 inserted through the guide rod 21 so as to be slidable in the front-rear direction, the guide rod 21, And a jack 22 interposed between the one segment holding portion 12. The first segment holding part 12 is moved in the front-rear direction by a jack 22. The first segment holding portion 12 holds and releases a segment (so-called flat plate segment) 2 having a flat (smooth) portion with no irregularities on the inner peripheral surface, and sucks and releases the segment 2. 23.

  As shown in FIG. 3, the second suspension beam 11 includes a guide column portion 24 that is slidably inserted in the diameter direction of the shield frame 7 into each support frame 9, and the other end (first portion) of the guide column portion 24. And a cantilever frame portion 25 that is provided at an end portion opposite to one end of the suspended beam 10 and extends in a direction in which they are close to each other. A jack 26 is interposed between each cantilever frame portion 25 and the support frame 9, and the second suspension beam 11 is moved in the tunnel radial direction as the jack 26 expands and contracts. Yes. As shown in FIG. 5, a suspended beam connecting member 27 is provided between the tips of the pair of cantilever frame portions 25 so as to reinforce the cantilever frame portions 25.

  As shown in FIGS. 5 and 6, a sliding frame 28 is provided between the pair of cantilever frame portions 25 of the second suspension beam 11 and extends rearward from the second suspension beam 11 and retracts forward. ing. Specifically, the slide frame 28 is provided so as to span between a slide rod portion 29 inserted through each cantilever frame portion 25 so as to be slidable back and forth and a rear end portion of the slide rod portion 29. And a rear frame portion 30. A storage jack 31 is interposed between the rear frame portion 30 and the cantilever frame portion 25, and the sliding frame 28 is moved in the front-rear direction when the storage jack 31 expands and contracts. .

  The second segment holding mechanism 58 includes a second segment holding portion 13 that holds the inner concave segment 2. The second segment holding mechanism 58 is provided on the second suspension beam 11 so as to be movable back and forth via the sliding frame 28. The second segment holding mechanism 58 is moved rearward and protrudes rearward from the second suspension beam 11. The work position for assembling the segments is the retreat position for retreating from the scaffold device 4 and the hoist 43 when moved forward. The second segment holding mechanism 58 includes a pair of guide rods 32 that extend forward in the rear frame portion 30, a second segment holding portion 13 that is inserted in the guide rod 32 so as to be slidable back and forth, and holds the segment 2, An adjustment jack 33 interposed between the guide rod 32 and the second segment holding part 13 is provided. The second segment holding portion 13 is moved in the front-rear direction by an adjustment jack 33 so that the held segment 2 can be adjusted to a predetermined assembly position.

  As shown in FIGS. 4 and 7, the second segment holding portion 13 is connected by a bolt or the like with a reinforcing rib (not shown) formed on the inner peripheral surface of the inner concave segment 2 sandwiched from the tunnel axis direction. The connection part 34 is provided on both sides of the connection part 34 and a support jack 35 for holding the segment 2 by pressing the inner peripheral surface of the segment 2 connected to the connection part 34.

  As shown in FIG. 1 and FIG. 8, the scaffold device 4 is provided on a traveling unit 37 that is movably provided on a rear deck 36 that extends forward from the rear of the shield machine main body, and the traveling unit 37. It consists of an elevating scaffolding device comprising an arcuate rail portion 38 extending along the upper inner peripheral surface of the tunnel wall 5 and a bucket portion 39 that travels along the arcuate rail portion 38 and moves up and down. The bucket portion 39 is provided at a base portion (not shown) that travels along the arc-shaped rail portion 38 so that the riding bucket 40 can be rotated about an axis extending in the front-rear direction, and the riding bucket 40 is always rotated horizontally so as to be horizontal. A mechanism (not shown) is provided. Further, the bucket portion 39 is provided on the arc-shaped rail portion 38 so as to protrude forward, so that the hand of an operator who has boarded the boarding bucket 40 can easily reach the segment assembly position.

  As shown in FIG. 1, the shape holding device 6 is configured by providing a jack (not shown) for expanding and contracting the upper and lower frames 41 and 42 between the upper and lower frames 41 and 42 extending in the vertical direction. After traveling to the subsequent segment assembly position, the jack is extended to secure the shape of the tunnel wall 5 with the upper and lower frames 41, 42. The upper frame 41 is provided with wheels (not shown) that are placed on the rear deck 36 when the jack is retracted and the upper frame 41 is lowered. When the frames 41 and 42 are separated from the tunnel wall 5, they run on the rear deck 36.

  Moreover, the hoist 43 for delivering the segment 2 to the 2nd segment holding | maintenance part 13 is provided in the lower end part of the back deck 36 so that front-back running is possible.

  Next, the operation of this embodiment will be described.

  As shown in FIG. 9, when the inner concave segment 2 is assembled, the segment 2 for one ring is assembled using the second segment holding portion 13. At this time, the shape holding device 6 holds the shape of the tunnel wall 5 behind the segment 2 ring from the segment assembly position, and the scaffold device 4 is on standby at the position one ring behind the segment assembly position. Therefore, it does not interfere with the segment assembly work.

  In addition, the operation of delivering the segment 2 to be assembled to the second segment holding unit 13 is performed by temporarily placing the segment 2 on the existing segment 44 at the segment assembling position by the hoist 43, and the second segment holding unit 13 This is done by gripping. At this time, since the second hanging beam 11 is positioned in front of the second segment holding portion 13, when the second segment holding portion 13 or the first segment holding portion 12 is not in the lower portion of the tunnel and the lower portion of the tunnel is vacant, The segment 2 is placed on the existing segment 44. Thereby, the hoist 43 does not interfere with the second suspension beam 11, the second segment holding part 13, and the first segment holding part 12, and the segment 2 can be delivered to the second segment holding part 13 stably. .

  The second segment holding mechanism 58 may extend backward when holding the segment 2 and retracts forward when the segment 2 is assembled. The time during which the hoist 43 can be retained at the segment assembly position can be lengthened, and the work of transferring the segment 2 from the hoist 43 to the second segment holding portion 13 can be simplified.

  As shown in FIG. 10, when all the segments 2 for one ring are assembled, the upper and lower frames 41 and 42 of the shape retaining device 6 are retracted up and down to separate the shape retaining device 6 from the tunnel wall 5 and to assemble the segments. The sliding frame 28 of the device 3 is moved forward to retract the second segment holding mechanism 58 forward. Thereafter, as shown in FIG. 11, the scaffold device 4 and the shape holding device 6 are advanced by one ring, and the shape holding device 6 is arranged at the position of the tunnel wall 5 in the shield machine 1. At this time, the second suspension beam 11 is positioned sufficiently forward of the bolt fastening position, and the second segment holding mechanism 58 is retracted forward to the position of the second suspension beam 11. The part 39 does not interfere with the second suspension beam 11 or the second segment holding mechanism 58. The running portion 37 of the scaffold device 4 protrudes forward from the arc-shaped rail portion 38 and appears to interfere with the second suspension beam 11 in the side view, but is positioned at the approximate center of the tunnel. There is no interference with the two suspended beams 11.

  When the shape holding device 6 and the scaffold device 4 reach predetermined positions, the upper and lower frames 41 and 42 of the shape holding device 6 are expanded vertically to hold the tunnel wall 5, and the scaffold device 4 is used to Start bolting work. Since the bucket portion 39 can be sufficiently close to the predetermined bolt fastening position, the bolt fastening operation can be performed efficiently and safely.

  After that, the shield machine 1 is advanced by one segment of the ring, the segment assembly device 3 assembles the segment 2 for one ring, the shape holding device 6 and the scaffold device 4 are advanced by one ring, and the shape holding device 6 tunnels. A series of work of holding the wall 5 and bolting with the scaffold device 4 is repeated to construct the tunnel sequentially.

  As shown in FIG. 12, when the segment 2 is assembled using the first segment holding part 12, the second segment holding mechanism 58 is always retracted forward. Thereby, it is possible to reliably prevent the second segment holding mechanism 58 from interfering with the scaffold device 4 and the hoist 43.

  As described above, the second segment holding mechanism 58 is provided so as to be movable between the working position protruding rearward and the front retracted position via the sliding frame 28 extending rearward. It is possible to prevent the second suspension beam 11 from interfering with the bucket portion 39 and the hoist 43 of the scaffold device 4. Thereby, a plurality of types of segments 2 having different shapes can be assembled, and devices such as the scaffold device 4 and the hoist 43 can be advanced to the segment assembly position, and the segment 2 can be easily assembled.

  Further, a scaffold device 4 for bolting the segment 2 assembled by the segment assembly device 3 is provided at the rear of the segment assembly device 3 so as to be movable forward, and the segment 2 is assembled at the rear of the scaffold device 4. The shape holding device 6 for holding the shape of the tunnel wall 5 is provided so as to be movable forward, and when the scaffold device 4 is moved forward, the sliding frame 28 is moved forward to move the second segment holding mechanism. Since 58 is retracted from the scaffold device 4, the scaffold device 4 can be advanced to a predetermined bolt fastening position, the bolt fastening work can be easily performed, and the shape retaining device 6 is sufficiently close to the segment assembly position. It is possible to hold the shape of the tunnel wall 5 with certainty.

  A hoist 43 for placing the segment 2 on the existing segment 44 on the same ring as the segment assembly position is provided to deliver the segment 2 to the segment assembling apparatus 3, and the hoist 43 slides when placing the segment 2 on the existing segment 44. Since the second segment holding mechanism 58 is retracted from the hoist 43 by moving the frame 28 forward, the segment 2 can be easily transferred from the hoist 43 to the second segment holding portion 13.

  The second segment holding mechanism 58 is formed to be movable back and forth so as to align the held segment 2 with a predetermined assembly position and includes the second segment holding portion 13 that holds the segment. In addition, when the second segment holding part 13 is moved minutely in the front-rear direction, it is possible to prevent the alignment accuracy and operability from deteriorating.

  Although the second segment holding mechanism 58 is retracted forward, the first segment holding mechanism 57 may be retracted forward, and the second segment holding mechanism 58 and the first segment holding mechanism 57 Both may be retracted forward.

  Another embodiment in which the first segment holding mechanism 57 can be retracted forward will be described. The configuration other than the support structure of the first segment holding mechanism 57 is the same as described above. Components similar to those described above are denoted by the same reference numerals.

  As shown in FIG. 13, the first suspension beam 60 is provided on each support frame 9 so as to be slidably inserted in the diameter direction of the shield frame 7, and at one end of these guide column parts 18. And a cantilever frame portion 61 extending in a direction close to each other. A jack 20 is interposed between each cantilevered frame portion 61 and the support frame 9. As shown in FIG. 14, a suspended beam connecting member 62 is provided between the tips of the pair of cantilever frame portions 61 so as to reinforce the cantilever frame portion 61.

  As shown in FIGS. 14 and 15, a sliding frame 63 that extends rearward from the first suspension beam 60 and retracts forward is provided between the cantilever frame portions 61. The sliding frame 63 includes a slide rod portion 64 that is inserted into each cantilever frame portion 61 so as to be slidable in the front-rear direction, and a rear frame portion 65 that is provided so as to span between the rear end portions of the slide rod portion 64. Consists of. A storage jack 66 is interposed between the rear frame portion 65 and the cantilever frame portion 61, and the sliding frame 63 is moved in the front-rear direction when the storage jack 66 expands and contracts. .

  The sliding frame 63 is provided with a first segment holding mechanism 57. The first segment holding mechanism 57 is moved to the work position for assembling the segment when the sliding frame 63 moves backward, and moved to the retreat position where it is retracted from the scaffold device 4 and the hoist 43 when the sliding frame 63 moves forward. It has come to be. The first segment holding mechanism 57 includes a pair of guide rods 21 extending forward in the rear frame portion 65, a first segment holding portion 12 that is inserted in the guide rod 21 so as to be slidable back and forth, and holds the segment 2. A jack 22 is provided between the guide rod 21 and the first segment holding portion 12.

  The first segment holding part includes a moving base 67 slidably engaged with the guide rod 21, a holding part main body 69 attached to the moving base 67 via a posture adjusting part 68, and a tunnel of the holding part main body 69. A vacuum pad 23 mounted on the outer peripheral surface, and a slip prevention that engages with a slip prevention hole (not shown) formed on the front end surface of the segment 2 that is mounted on the holding body 69 so as to be movable in the tunnel axis direction. And a pin 70.

  The posture adjusting unit 68 is interposed between the moving table 67 and the holding unit main body 69 and suspends the holding unit main body 69 so as to be tiltable in all directions with respect to the moving table 67. And four posture control jacks 72 arranged at intervals in the tunnel width direction and the axial direction between the main body 69 and adjusting the amount of expansion / contraction of each posture control jack 72, 69 postures can be changed.

  The vacuum pad 23 is formed of a flexible material such as rubber in a ring shape (a cylindrical shape with a low height), one end of which is fixed to the holding body 69 by adhesion or the like, and the other end contacts the segment 2. Being touched. The holding portion main body 21 is formed with an exhaust port that opens in the vacuum pad 23. When the vacuum pad 23 is in contact with the upper surface of the segment 2, the air in the vacuum pad 23 is vacuumed from the exhaust port. It is exhausted by a pump. By this exhaust, the inside of the vacuum pad 23 becomes negative pressure, and the segment 2 is adsorbed.

  As described above, when the first segment holding mechanism 57 is provided to be movable between the working position protruding rearward and the front retracted position via the sliding frame 63 extending rearward, the first segment holding mechanism 57 is provided. Can be prevented from interfering with the bucket portion 39 and the hoist 43 of the scaffold device 4.

  In addition, although the 1st segment holding | maintenance part 12 was a vacuum type and the 2nd segment holding | maintenance part 13 demonstrated what grips the inner surface recessed segment 2, it is not restricted to this. The types of the first segment holding part 12 and the second segment holding part 13 may be freely determined according to the segment 2 to be assembled.

  Furthermore, a control device (not shown) for moving the sliding frame 28 forward to retract the second segment holding mechanism 58 from the scaffold device 4 when the scaffold device 4 is moved forward may be provided. When the segment 43 is placed on the existing segment 44, a control device (not shown) that moves the sliding frame 28 forward and retracts the second segment holding mechanism 58 from the hoist 43 may be provided.

It is a principal part side view of the shield machine which shows suitable embodiment of this invention. It is AA arrow sectional drawing of FIG. It is a BB line arrow directional view of FIG. It is a principal part enlarged view of FIG. It is CC sectional view taken on the line of FIG. It is operation | movement explanatory drawing which retracted the 2nd segment holding | maintenance part of FIG. 5 ahead. It is DD sectional view taken on the line of FIG. It is a front view of a scaffold apparatus. It is a principal part side view of the shield machine at the time of a segment assembly start. It is a principal part side view of the shield machine which the segment for 1 ring finishes assembling. It is a principal part side view of the shield machine which advanced the scaffold apparatus and the shape maintenance apparatus. It is a principal part side view of the shield machine which assembles a segment by the 1st segment holding part. It is a rear view of the 1st suspension beam which shows other embodiment. FIG. 14 is a plan view of FIG. 13 showing another embodiment. It is a sectional side view of FIG. 14 which shows other embodiment. It is a principal part side view of the conventional shield machine.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Shield machine 2 Segment 3 Segment assembly apparatus 4 Scaffolding apparatus 5 Tunnel wall 6 Shape holding apparatus 7 Shield frame 8 Swivel frame 9 Support frame 10 First hanging beam 11 Second hanging beam 12 First segment holding part 13 Second segment holding Portion 28 Slide frame 43 Hoist 44 Existing segment 57 First segment holding mechanism 58 Second segment holding mechanism

Claims (4)

  A swivel frame that rotates coaxially within the shield frame is provided, and a support frame that extends rearward in the digging direction is provided on the swivel frame, and the first suspension beam that extends in one of the diametric directions can be moved in the radial direction on the support frame. A first segment holding mechanism for holding a segment at a distal end of the first suspension beam by providing a second suspension beam extending in the radial direction on the support frame behind the first suspension beam so as to be movable in the radial direction; And a second segment holding mechanism for holding another type of segment having a shape different from that of the segment at the tip of the second suspension beam. And at least one of the first segment holding mechanism and the second segment holding mechanism protrudes rearward through a sliding frame extending rearward. Shield machine, characterized in that is movable in the working position and the front of the retracted position.   A scaffold device for bolting the segment assembled by the segment assembling device is provided behind the segment assembling device so as to be movable forward, and a shape of a tunnel wall formed by assembling the segments is provided behind the scaffold device. 2. A shape holding device for holding the frame is provided so as to be movable forward, and when the scaffold device is moved forward, the sliding frame is moved forward to retract the segment holding mechanism from the scaffold device. The shield machine described.   A hoist for placing the segment on an existing segment on the same ring as the segment assembling position in order to deliver the segment to the segment assembling apparatus, and when the hoist places the segment on the existing segment, the sliding frame is moved forward; The shield machine according to claim 1, wherein the shield holding machine is moved to retract the segment holding mechanism from the hoist.   4. The shield machine according to claim 1, wherein the segment holding mechanism includes a segment holding portion that is formed so as to be movable back and forth so as to adjust the held segment to a predetermined assembly position and holds the segment. .

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