JP4401398B2 - Segment assembly equipment - Google Patents

Description

  The present invention relates to a segment assembling apparatus for assembling a segment carried into an existing tunnel to a tunnel inner wall surface.

  Conventionally, large cross-section rectangular tunnels have been carried out by the open-cut method, but the so-called MMST (Multi-Micro Shield Tunnel) method, which can be constructed without open cuts, has recently been carried out because it is difficult to perform construction in urban areas. Yes. The MMST method is a method of excavating the tunnel outer shell part with a plurality of small cross-section shields, connecting them together, constructing the outer shell body, and then excavating the internal soil to make a large cross-section tunnel. .

FIG. 28 is an explanatory diagram of the construction procedure of the MMST method. Hereinafter, the MMST method will be outlined based on FIG.
After constructing the vertical shaft, a single shield machine is dug to construct single tunnels 100 to 103 that constitute the outer shell portion that becomes the tunnel housing (FIG. 28 (a)). After the construction of the adjacent single tunnel is completed, a part of the MMST steel shell is removed and the single tunnel connecting portions 105a, 105b, and 105c are constructed (FIG. 28 (b)). Further, the single tunnel connecting portions 105d, 105e, and 105f are constructed, and then the concrete 107 is placed in the steel shell to construct a casing of the outer shell (FIG. 28 (c)). After the outer shell is completed, the internal soil is excavated by a normal excavating machine (FIG. 28 (d)). Internal members such as the inner wall 110, the middle floor slab 111, and the partition 112 are constructed to complete the MMST tunnel (FIG. 28 (e)).

  For the construction of a single MMST tunnel as described above, a shield machine with a flat rectangular cross section is used. In addition, as a segment for constructing the inner wall of a single tunnel, for example, as shown in FIG. 29, it consists of six main girders A, B1, B2, C, D1, D2, and two central pillars E, F. Things are known.

  When constructing a single tunnel, it is necessary to carry a segment into an existing tunnel and assemble it into a rectangular shape as shown in FIG. Examples of the assembling apparatus include a segment conveying apparatus, a supplying apparatus, and an assembling apparatus disclosed in JP-A-10-18792.

The segment conveying apparatus disclosed in the publication is provided with transfer means for moving in a double row in the tunnel width direction while supporting the segments while standing in the longitudinal direction of the tunnel.
In addition, the segment supply device grips the transported segment in a standing state along the longitudinal direction of the tunnel, and rotates the gripping means around an axis along the height direction of the tunnel. And a turning means for bringing the wing up along the tunnel width direction.
The segment assembling apparatus also includes a gripping means for gripping the supplied segment in a standing state along the tunnel width direction, and rotating the gripping means about an axis along the tunnel width direction so that the segment is laterally moved. And turning means.

  And according to said conveying apparatus, the conveyance in a small space can be performed with high efficiency, and according to the supply apparatus, the segment conveyed can be smoothly supplied also in a narrow place, and also an assembly apparatus According to the above, the supplied segments can be assembled by changing the posture suitably even in a narrow place.

  FIG. 30 is a distribution diagram of bending moment acting on the MMST tunnel. As shown in FIG. 30, in the MMST tunnel, the largest bending moment acts on the center of each side. Therefore, it is desirable from the point of resistance to moment that the segments constituting the single tunnel are integrated without dividing the long side.

However, the actual situation is that the long sides are actually divided as shown in FIG. 29 for the convenience of assembly in a narrow space. Therefore, it is necessary to firmly connect the segments divided by the long side with a large number of bolts, and there is a problem that it takes time and cost.
Therefore, it is conceivable to use segments that do not divide long sides, but there is no technology to handle and assemble segments that do not divide long sides in a narrow space called a flat rectangle, so such segments have been put to practical use. There is no current situation.

  The above-described conventional segment transport, supply, and assembly apparatus is also intended for a long side divided into two as shown in FIG. 29, and this can be applied to a segment whose long side is not divided as follows. There is a problem like this.

The segment supply apparatus shown in the publication includes gripping means for gripping the transported segment in a standing state along the longitudinal direction of the tunnel, and the gripping means is rotated around an axis along the tunnel height direction. It is going to move. Then, referring to the supply device shown in the embodiment of the publication, the segment is gripped by an integral swing arm and rotated around a predetermined axis.
In such a configuration, when the segment is rotated, the end of the segment draws an arc, but in such a configuration, a long segment that is approximately the same size as the inner wall of the shield machine is rotated. If it does so, the edge part of a segment will contact the wall of the existing segment, or the side wall of a shield machine, and cannot rotate.

  In addition, the assembly work is performed by one assembly device, but if a long segment whose long sides are integrated is handled by a single device in the horizontal direction, the device itself will be enlarged. There's a problem. In addition, the positioning when assembling the segment is performed by gripping the central portion of the segment when it is performed by one apparatus, but in this case, the distance between the gripping portion of the segment and both ends is long. Therefore, there is a problem that it is extremely difficult to finely adjust the positions of both ends.

  The present invention has been made to solve such problems, and an object of the present invention is to provide a segment assembling apparatus that can assemble a long segment with long sides integrated.

(1) A segment assembling apparatus according to the present invention grips a segment carried into an existing tunnel and supplies it to the rear trunk side of a shield machine, and grips a segment supplied from the segment supplying apparatus A segment assembling apparatus having an erector apparatus assembled to the inner wall of the tunnel,
The segment supply device includes a movable base installed in an existing segment and movable in the longitudinal direction of the tunnel, a swing arm installed in the movable base, and a segment gripping unit attached to the swing arm and gripping the segment. Prepared,
The erector device includes first and second erector devices,
In the tunnel width direction or tunnel height direction, the first erector device is located on the end side of the position where the segment gripping portion receives the segment carried into the existing segment, and in the tunnel forward direction of the existing segment. It is installed on the rear trunk side of the shield machine from the segment assembly position,
The second erector device has a segment assembly position in the tunnel width direction or tunnel height direction opposite to the end side where the first erector device is installed, and in the tunnel front direction of the existing segment. It is installed in the existing segment side rather than.

(2) Also, a segment supply device that grips the segment carried into the existing tunnel and supplies it to the rear trunk side of the shield machine, and an erector that grips the segment supplied from the segment supply device and assembles it to the tunnel inner wall A segment assembly apparatus comprising:
The segment supply device includes a movable base installed in an existing segment and movable in the longitudinal direction of the tunnel, a swing arm installed in the movable base, and a segment gripping unit attached to the swing arm and gripping the segment. Prepared,
The erector device includes first and second erector devices,
In the tunnel width direction or tunnel height direction, the first erector device is on the end side of the position where the segment gripping portion receives the segment carried into the existing segment, and in the tunnel forward direction of the existing segment. It is installed on the rear trunk side of the shield machine from the segment assembly position,
The second erector device has a segment assembly position in the tunnel width direction or tunnel height direction opposite to the end side where the first erector device is installed, and in the tunnel front direction of the existing segment. Is installed on the rear trunk side of the shield machine,
The installation position of the second erector device is in front of the tunnel than that of the first erector device, and the holding portion of the second erector device is longer than that of the second erector device. It is a feature.

(3) Further, in the above (1) or (2) , the swivel arm is constituted by a plurality of links that can rotate with each other, and one of the plurality of links is arranged around its link axis. It is characterized by being rotatable.

Therefore, since the segment supply device according to the present invention has the above-described configuration, the long side segment can be gripped by the segment supply device and can be swung in a state where one end of the long side segment is close to the inner wall of the existing tunnel. A long side segment having a length substantially equal to the width or height can be turned in the tunnel.
Moreover, obstacles can be avoided by moving the moving table back and forth during segment handling, and the internal space of the shield machine can be used effectively. For this reason, the full length of a shield machine can be shortened.

[Embodiment 1]
FIG. 1 is a front view of a segment assembly state targeted by the segment assembly apparatus according to the present invention, and FIG. 2 is a perspective view of FIG. As shown in FIGS. 1 and 2, the segment for one ring is composed of four parts A to D, and is reinforced by four middle pillars E to H. The long side segments B and D on the long side are integrated without being divided in the middle.

  3 is an enlarged view of the inner side of the long side segment B of FIG. 2, and FIG. 4 is a sectional view of the long side segment B in the axial direction. As shown in FIGS. 2 to 4, the segment is made of a bottomed frame, and a plurality of ribs B <b> 1 are provided inside. Further, a flange portion B2 is provided on the inner surface side in order to improve and grip the segment strength.

  The assembly order of the segments is as follows. First, the short-side segment A that is the side wall shown in FIGS. 1 and 2 is installed, then the long-side segments B and D that are the lower upper walls are installed, and The side segment C is installed, and finally the middle pillars E to H are installed. Temporarily fix with bolts when installing each segment, and perform final fixing after all the installation is complete.

Next, an assembling apparatus and method for assembling the segments shown in FIGS.
FIG. 5 is a plan sectional view of a segment assembling apparatus according to an embodiment of the present invention and a shield machine having the segment assembling apparatus, FIG. 6 is a side sectional view, and FIG. 7 is a sectional view taken along line AA in FIG. First, the outline of the configuration of the apparatus based on FIGS. 5 to 7 will be described. The shield machine 1 includes a flat rectangular front body portion 3 and a rear body portion 5. It is a so-called half-fold structure that is connected so as to be bendable.
5 to 7, 7 is a cutter provided at the front end of the front trunk portion 3, 9 and 11 are drainage pipes for discharging excavated earth and sand, and 12 is a rear side for collecting excavated earth and sand discharged from the earth discharge pipes 9 and 11. It is a collective drainage pipe that discharges to the ground. Reference numeral 13 denotes a plurality of middle-folded jacks that bend the front body part 3 and the rear body part 5, 15 denotes a shield jack used for excavation of the shield machine 1, and 21 denotes an existing segment 20 installed on the inner peripheral surface of the rear body part. And a tail seal that seals between the inner periphery of the rear trunk portion.

  Reference numeral 17 denotes an erector apparatus which is installed on the existing segment 20 side and assembles the segment, and 19 is a segment supply apparatus which is installed adjacent to the erector apparatus 17 and delivers the segment to the erector apparatus 17.

  8 is a view of the segment supply device 19 as viewed from the rear, FIG. 9 is an enlarged view of the vicinity of the erector device 17 in FIG. 5, FIG. 10 is an enlarged view of the vicinity of the erector device 17 as viewed from the front side, and FIG. 10 is an enlarged view of a portion A circled in FIG.

  23 is a frame installed on the inner peripheral wall of the existing segment 20, 25 is a pair of first guide rails installed in the width direction on the upper and lower sides of the front side of the frame 23, and 27 is installed on the pair of first guide rails 25. The left and right moving body is provided so as to be movable left and right along the first guide rail 25, 29 is a second guide rail provided in the vertical direction of the left and right moving body 27, and 31 is provided on the left and right moving body 27. 2 A vertically movable body installed so as to be vertically movable along the guide rail 29, 33 is a turning bearing installed on the vertically moving body 31, 35 is a turning motor for driving the turning bearing 33, and 37 is installed on the turning bearing 33. And a holding unit 39 for holding a segment gripping device 41, which will be described later. It is a segment gripping device.

  The configuration of the segment gripping device 41 will be described with reference to FIG. The segment gripping device 41 includes a main body portion 41a that is installed so as to be movable with respect to the holding portion 37 with the holding portion 37 inserted therein, and a gripping portion 41b that is installed on the main body portion 41a via a swing pin 43 so as to be bent. The grip 41b can be swung by a swing cylinder 45.

  12 is a cross-sectional view taken along line AA in FIG. Based on FIG.11 and FIG.12, the structure of the holding part 41b is demonstrated. 47 is a clamp member comprising a pair of claws, and 49 is a grip cylinder for driving the clamp member 47. By driving the grip cylinder 49, the claws of the clamp member 47 are moved to grip the segment.

FIG. 13 is an enlarged view of the vicinity of the segment supply device 19 in FIG. Hereinafter, the structure of the segment supply apparatus 19 is demonstrated based on FIG. 8, FIG.
51 is a frame for installing the segment supply device 19 on the existing segment 20, 53 is a pressing jack for pressing the frame 51 against the inner peripheral wall of the existing segment 20, and 54 is a replacement jack for moving the frame 51 forward after assembly of the segment. The frame 51 is firmly fixed to a predetermined position of the existing segment by the pressing jack 53, and when the position of the frame 51 is advanced, the pressing of the pressing jack 53 is released and the replacement jack 54 is extended.

Reference numeral 55 denotes a first moving base installed on the frame 51 so as to be movable in the front-rear direction, 57 denotes a front-rear moving jack that drives the first moving base 55 in the front-rear direction, 58 denotes a mounting base fixed to the first moving base 55, 59 Is a second moving table installed on the mounting table 58 via the guide rail 61 so as to be movable in the width direction.
63 is a first link whose base end is attached to the second moving table 59, 65 is a second link whose one end is rotatably attached to the tip of the first link 63, and 67 is a screw that rotates around the tip of the second link 65. A third link is movably attached. The third link 67 has a swivel bearing 69 at a substantially central portion of the link, and is rotatable around the link axis.

  Reference numeral 71 denotes a fourth link that is rotatably attached to the distal end of the third link 67 and has a segment gripping portion 73 to be described later attached to the distal end portion, and 73 is a segment gripping portion that is attached to the fourth link 71 and grips the segment. is there. The segment gripping portion 73 is pivotally supported by a shaft 72 orthogonal to the fourth link 71, and is configured to be rotatable around the shaft.

  The swivel arm of the segment supply device 19 is configured by the four links from the first link 63 to the fourth link 71 described above. A drive means such as a cylinder (not shown) is provided between the links so that the links can be driven relatively. Further, drive means (not shown) is also provided before and after the swing bearing 69 in the third link 67, so that the third link 67 can be rotated before and after the swing bearing 69.

  As described above, the swivel arm of the segment supply device 19 is composed of three pin-coupled links, so that when the segment is swung as will be described later, it becomes possible to move the end of the long segment. It can be handled without hitting the side wall of the shield machine.

FIG. 14 is an explanatory diagram of the internal configuration of the segment gripping portion 73. Hereinafter, the configuration of the segment gripping portion 73 will be described with reference to FIG.
In the figure, reference numeral 80 denotes a main body portion of the segment gripping portion 73 formed of a rectangular box, 81 and 83 denote clamp members provided on the lower surface side of the main body portion 80, and 85 and 87 denote gripping cylinders that drive the clamp members 81 and 83. .

  In the segment gripping portion 73 configured as described above, the clamp members 81 and 83 are driven by the gripping cylinders 85 and 87, and the segments are gripped by hooking the claws on the flange portions of the segments as shown in FIG. be able to.

15 to 21 are explanatory diagrams of the operation of the present embodiment. The segment assembling operation will be described below with reference to FIGS.
First, the short-side segment A for the side wall is carried to the side of the segment supply device 19 by a moving carriage (not shown). When the short side segment A is carried in, the inside of the short side segment A is gripped by the segment gripping portion 73 of the segment supply device 19 (see FIG. 15), and the driving means provided on the swivel arm of the segment supply device 19 The short-side segment A is moved to the vicinity of the elector apparatus 17 by driving and turning the turning arm of the segment supply device 19 and driving the back-and-forth moving jack 57 to move the first moving table 55 backward. Next, the short side segment A is gripped by the segment gripping device 41 of the erector device 17 to move the left-right moving body 27 to the side wall side along the first guide rail 25 and the swing motor 35 is driven to drive the swing bearing. By rotating 33, the segment A is swung around an axis parallel to the tunnel axis to be in a standing posture, and is installed at a predetermined position indicated by a two-dot chain line in FIG.

  Next, the long side segment B is carried into the vicinity of the segment supply device 19, and as shown in FIG. 17, the segment holding portion 73 of the segment supply device 19 holds the substantially central portion on the inner surface side of the long side segment B. At this time, the 1st movement stand 55 is made into the state which advanced most.

  Next, as shown in FIG. 18, the driving means of each link of the segment supply device 19 is driven to turn the turning arm of the segment supply device 19 in a horizontal plane, and the forward / backward movement jack 57 is driven to perform the first operation. The long side segment B is continuously turned by moving the moving table 55 backward. At this time, as shown by a broken line in FIG. 5, the long side segment B is moved so that the corner of the rear end of the long side segment B does not collide with the side wall of the existing segment 20 and is substantially parallel to the side inner wall. Rotate gradually as a whole. The reason why such a subtle movement is possible is that the swivel arm of the segment supply device 19 is composed of a plurality of links, and the links can move relative to each other within the swivel plane.

When the long side segment B is perpendicular to the axial direction of the tunnel, as shown in FIG. Thereafter, the long side segment B is moved to a predetermined position by the two devices, the segment supply device 19 and the erector device 17, and further aligned and installed at the predetermined position. At this time, since the long-side segment B is gripped by both the erector device 17 and the segment supply device 19, it is possible to perform delicate alignment of both end portions of the segment with devices close to the respective end portions, and alignment work Can be done smoothly.
The upper long side segment D is installed by the same operation.

Next, the short side segment C for the other side wall is carried in and gripped by the segment supply device 19 as shown in FIG. Then, the rotation of the third link 67 and the rotation of the fourth link 71 are used together so that the short side segment C is in a standing posture as shown in FIG. 21 and the inner surface of the segment faces the inside of the tunnel. Install.
Finally, the middle pillar is installed and the assembly of the segments for one ring is completed. Thereafter, the same operation is repeated.

As described above, according to the present embodiment, since the turning arm of the segment supply device 19 is configured by three pins-coupled links, it is possible to make a delicate movement when turning the segment as described later. The end of the long segment can be handled without hitting the side wall of the shield machine.
In addition, since the alignment of the long side segment is performed by the segment supply device 19 and the elector device 17, the position can be finely adjusted, and the long side segment can be installed smoothly.

Further, since the segment supply device 19 has a segment assembling function, the number of devices may be two, and the entire device can be made compact.
In addition, since both the erector device 17 and the segment supply device 19 are installed on the existing segment side, they are not affected by the positioning of the shield digging machine as in the case where the erector device is installed on the shield digging machine side, The laying segment can be reliably positioned with respect to the existing segment.

  In the first embodiment, the segment assembly is performed by the two devices, the segment supply device 19 and the erector device 17, but if the length of the segment is not so long, the segment It is also possible to assemble the segments using only the supply device 19.

[Embodiment 2]
22 is a plan sectional view of a segment assembling apparatus and a shield machine according to the second embodiment, FIG. 23 is a side sectional view, and FIG. 24 is an AA sectional view in FIG.
In the present embodiment, another erector device 90 is installed on the shield machine side, and the configuration of the swivel arm of the segment supply device is simplified from that of the first embodiment.

Specifically, the erector device 90 has the same configuration as the erector device 17, and is different only in that it is installed on the link girder of the shield machine 1.
The segment supply device eliminates the swivel bearing installed on the third link, omits the fourth link, and connects the third link and the segment gripping portion 73 so that they can rotate in the same plane as the paper surface. It is.

  According to the present embodiment, both end portions of the long side segment can be gripped by the two erector devices 17 and 90, and the both end portions can be more reliably and quickly aligned.

[Embodiment 3]
25 is a plan sectional view of the segment assembling apparatus according to the third embodiment and a shield machine having the segment assembling apparatus, FIG. 26 is a side sectional view, and FIG. 27 is an AA sectional view in FIG.
In the present embodiment, the erector device 17 installed on the existing segment side in the second embodiment is installed on the shield machine 1 side.

  In the lower erector device 17 in the drawing, the length of the holding portion 37 that holds the segment gripping device 41 is increased so as not to disturb the long-side segment. As a result, portions other than the segment gripping device 41 of the erector device 17 can be installed closer to the front portion of the shield machine 1, and do not interfere with the turning of the long side segment.

  According to the present embodiment, since the two elector measures 17 and 90 are both installed on the shield machine 1 side, the moving operation of the position of the elector device is completed for the next segment after the segment for one ring is completed. There is an effect that becomes unnecessary.

In the first to third embodiments, the construction of the MMST tunnel has been described as an example. However, the present invention is not limited to this, and may be a construction of a shield tunnel having a flat rectangular cross section. If applicable.
In the above description, the construction of a rectangular tunnel that is flat in the horizontal direction has been described. However, it goes without saying that the present invention can also be applied to the construction of a rectangular tunnel that is flat in the vertical direction.

Since the present invention is configured as described above, the following effects can be obtained.
(I) In addition, the segment supply device includes a movable base installed in an existing segment and movable in the longitudinal direction of the tunnel, a swing arm installed in the movable base, a segment attached to the swing arm and gripping the segment Since the swivel arm is constituted by a plurality of links that can be rotated with respect to each other in the swivel plane, the long side segment is gripped by the segment supply device, and one end of the long side segment is It is possible to swivel in the state of being close to the inner wall of the existing tunnel, and it is possible to turn in the tunnel of the long side segment having a length substantially equal to the tunnel width or height.
In addition, since the swivel arm is installed on a movable table that can move in the longitudinal direction of the tunnel, obstacles can be avoided by moving the movable table back and forth during segment handling, and the internal space of the shield machine is effectively utilized. it can. For this reason, the full length of a shield machine can be shortened.

  (Ii) Further, the swivel arm is rotatable about the arm axis, and the segment gripping part is attached so as to be rotatable about an axis parallel to the swivel plane. Increasing the degree, it becomes possible to assemble the segments in the segment supply device.

  (Iii) Since the erector device is installed on the existing segment side, it is not affected by the positioning of the shield digger as in the case where the erector device is installed on the shield digger side. Positioning can be performed reliably.

  (Iv) Since two erector devices are installed at both ends in the tunnel width direction, the two erector devices grip the vicinity of both ends of the long side segment, and the two erector devices move the long side segment. , Positioning can be performed, and delicate movement and positioning of both ends of the long side segment can be performed.

  (V) Further, a moving base installed on the existing segment and movable in the longitudinal direction of the tunnel, a turning arm installed on the moving base, and a segment gripping part attached to the turning arm and gripping the segment are provided. The swivel arm is composed of a plurality of links that can be rotated with respect to each other in the swivel plane, and is configured to be rotatable about an arm axis. The segment gripping portion is rotatable about an axis parallel to the swivel plane. Since it is configured to be attached, it is possible to assemble the segments of all the wall surfaces of the tunnel with a single device.

  The present invention makes it possible to install a segment accurately and easily, and the overall length of a shield machine equipped with the segment can be shortened. Therefore, the present invention can be widely used as a segment assembling apparatus installed in various shield machines. .

It is a front view of the segment made into the installation object of embodiment of this invention. It is a perspective view of the segment shown in FIG. It is explanatory drawing which shows a part in FIG. 2 in detail. It is a longitudinal cross-sectional view of FIG. It is a plane sectional view of a segment assembly device and a shield machine according to Embodiment 1 of the present invention. It is a sectional side view of the segment assembly apparatus and shield machine which concern on Embodiment 1 of this invention. It is AA sectional drawing in FIG. It is the figure which looked at the installation part of the segment assembly apparatus concerning Embodiment 1 of this invention from back. FIG. 6 is a partially enlarged view of FIG. 5. It is the figure which looked at the erector apparatus which concerns on Embodiment 1 of this invention from the front side. It is an enlarged view of the A section in FIG. It is AA sectional drawing of FIG. FIG. 6 is a partially enlarged view of FIG. 5. It is explanatory drawing of the segment holding part 73 of the segment supply apparatus shown in FIG. It is operation | movement explanatory drawing of one embodiment of this invention. It is operation | movement explanatory drawing of one embodiment of this invention. It is operation | movement explanatory drawing of one embodiment of this invention. It is operation | movement explanatory drawing of one embodiment of this invention. It is operation | movement explanatory drawing of one embodiment of this invention. It is operation | movement explanatory drawing of one embodiment of this invention. It is operation | movement explanatory drawing of one embodiment of this invention. It is a plane sectional view of the shield machine according to Embodiment 2 of the present invention. It is a sectional side view of the shield machine which concerns on Embodiment 2 of this invention. It is AA sectional drawing in FIG. It is a plane sectional view of the shield machine according to Embodiment 3 of the present invention. It is a sectional side view of the shield machine which concerns on Embodiment 3 of this invention. It is AA sectional drawing in FIG. It is explanatory drawing of the process of a MMST construction method. It is explanatory drawing of the conventional segment. It is explanatory drawing of the moment distribution which acts on a MMST tunnel.

Explanation of symbols

17 Electa device 19 Segment supply device 55 First moving table 59 Second moving table 63 First link 65 Second link 67 Third link 69 Swivel bearing 71 Fourth link 73 Segment gripping part

Claims (3)

A segment supply device that grips a segment carried into an existing tunnel and supplies it to the rear trunk side of the shield machine, and an erector device that grips the segment supplied from the segment supply device and assembles it to the tunnel inner wall A segment assembly device,
The segment supply device includes a movable base installed in an existing segment and movable in the longitudinal direction of the tunnel, a swing arm installed in the movable base, and a segment gripping unit attached to the swing arm and gripping the segment. Prepared,
The erector device includes first and second erector devices,
In the tunnel width direction or tunnel height direction, the first erector device is located on the end side of the position where the segment gripping portion receives the segment carried into the existing segment, and in the tunnel forward direction of the existing segment. It is installed on the rear trunk side of the shield machine from the segment assembly position,
The second erector device has a segment assembly position in the tunnel width direction or tunnel height direction opposite to the end side where the first erector device is installed, and in the tunnel front direction of the existing segment. A segment assembling apparatus, wherein the segment assembling apparatus is installed on an existing segment side. A segment supply device that grips a segment carried into an existing tunnel and supplies it to the rear trunk side of the shield machine, and an erector device that grips the segment supplied from the segment supply device and assembles it to the tunnel inner wall A segment assembly device,
The segment supply device includes a movable base installed in an existing segment and movable in the longitudinal direction of the tunnel, a swing arm installed in the movable base, and a segment gripping unit attached to the swing arm and gripping the segment. Prepared,
The erector device includes first and second erector devices,
In the tunnel width direction or tunnel height direction, the first erector device is located on the end side of the position where the segment gripping portion receives the segment carried into the existing segment, and in the tunnel forward direction of the existing segment. It is installed on the rear trunk side of the shield machine from the segment assembly position,
The second erector device has a segment assembly position in the tunnel width direction or tunnel height direction opposite to the end side where the first erector device is installed, and in the tunnel front direction of the existing segment. Is installed on the rear trunk side of the shield machine,
The installation position of the second erector device is in front of the tunnel than that of the first erector device, and the holding portion of the second erector device is longer than that of the second erector device. A segment assembling apparatus. The said turning arm is comprised by the some link which can mutually be rotated, and one of these links can be rotated around the link axis | shaft, The 1 or 2 characterized by the above-mentioned. The segment assembling apparatus described.

Images