JP3879257B2 - Segment assembly equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a segment assembling apparatus.
[0002]
[Prior art]
In the case of building a long underground hole such as a tunnel, a shield method has been conventionally used. In the shield method, a hole formed by a shield machine has an arc shape in a circular shape and a planar shape. However, by attaching a plurality of substantially rectangular segments, the segments are assembled into an annular shape, which is sequentially performed in the direction of travel of the shield machine with the progress of the shield machine to complete the underground hole.
[0003]
As shown in FIGS. 10 to 13, in the segment assembling apparatus for assembling the segment 1, the suspension beam 3 is movably moved in the radial direction of the rotating frame 2 on the rotating frame 2 that can rotate in the circumferential direction. The slide frame 4 is attached to the suspension beam 3 so as to be movable in the axial center direction of the rotary frame 2. The spherical bearing 5 is attached to the spherical bearing 5 that forms a fulcrum provided at a predetermined position of the slide frame 4. A swing frame 6 is attached so as to be swingable in any direction as a center, and a segment gripping means 7 for gripping the segment 1 is disposed on the swing frame 6.
[0004]
The rotary frame 2 is supported by a plurality of support rollers 10 arranged in parallel with the cylindrical frame 9 in the rear end portion of the cylindrical frame 9 of the shield machine 8 and driven by a driving device (not shown). It can be rotated in the circumferential direction.
[0005]
The suspension beam 3 is attached so as to hang over a lower end of a guide rod 12 attached to the front ends of left and right brackets 11 protruding rearward of the rotating frame 2 so as to be movable up and down (advance and retreat). 11, a trunnion-type fluid pressure cylinder 13 is vertically mounted, and the tip of the piston rod 13a of the fluid pressure cylinder 13 is connected to the suspension beam 3, and is suspended by the expansion and contraction operation of the fluid pressure cylinder 13. The beam 3 can be moved up and down (moved in the radial direction of the rotating frame 2) while being guided by the guide rod 12.
[0006]
The slide frame 4 is movably disposed through a slide guide block 15 with respect to a pair of left and right guide rods 14 disposed on the lower surface side of the suspension beam 3 so as to extend in the axial direction of the rotary frame 2. It can be moved in the axial direction of the rotary frame 2 by an expansion / contraction operation of a fluid pressure cylinder (not shown) arranged in parallel with the guide rod 14.
[0007]
The swing frame 6 is attached via a spherical bearing 5 and a pin 17 to the center position of a connecting block 16 that connects the middle portions of the left and right sliding guide blocks 15 of the slide frame 4. The front and rear positions of the bottom surface of each sliding guide block 15 and the four corners of the bottom surface of the swing frame 6 are connected by four connecting jacks 20 via pins 18 and a spherical bearing 19. Thus, the posture is freely corrected by swinging in an arbitrary direction around the spherical bearing 5.
[0008]
The segment gripping means 7 includes a pair of front and rear elevating jacks 21 pivotally attached to the upper end of the swing frame 6, and a rotating frame 2 while being pivotally attached to the distal end of the elevating jack 21 and guided by a guide rod 22. And an elevating block 23 that can be moved up and down (advanced and retracted) in the radial direction. The elevating block 23 has a gripping hole 24 (see FIG. 12) formed in the center of the inner peripheral surface of the segment 1. A gripping shaft 25 that can be inserted into and engaged with the reference shaft 25 is rotatably provided.
[0009]
That is, the gripping hole 24 of the segment 1 has an elongated opening in the axial direction of the rotating frame 2 at the inlet portion, but the inside is widened in the circumferential direction of the rotating frame 2. The lower end portion of the gripping shaft 25 is rotated by about 90 ° after the lower end portion of the gripping shaft 25 having a planar shape substantially equal to the opening shape of the entrance portion of the gripping hole 24 is inserted into the gripping hole 24. The segment 1 can be suspended by being engaged with the gripping hole 24.
[0010]
Here, the rotation operation of the gripping shaft 25 is performed by rotating a pinion 26 externally fitted to the gripping shaft 25 by a reciprocating operation of a rack 27 meshing with the pinion 26, as shown in FIG. The rack 27 is accommodated in a cylinder cover 28 attached to the elevating block 23 and can be reciprocated by a fluid pressure through piston portions 29 at both ends.
[0011]
Further, two fixed jacks 30 are penetrated and fixed on the left and right sides of the gripping shaft 25 of the segment gripping means 7 on the lower surface side of the swing frame 6, and the segment 1 is attached to the gripping shaft 25 of the segment gripping means 7. In a suspended state, the distal end portion of each fixed jack 30 is stretched and pressed against the concave portion of the inner peripheral surface of the segment 1 so that the segment 1 can be held without wobbling.
[0012]
Furthermore, segment fastening means 31 such as a bolt fastening machine or a cotter driving device for fastening the circumferential end surfaces of the new segment 1 and the existing segment 1 to each other is provided on both the left and right sides of the swing frame 6. Although not shown for convenience of explanation, segment fastening means for fastening the axially end faces of the newly installed segment 1 and the existing segment 1 is also provided as appropriate for the swing frame 6. Is attached in position.
[0013]
10 and 11, 32 is a shield jack of the shield machine 8, and the shield jack 32 is extended, and the block 33 attached to the tip of the rod is pressed against the face side end surface of the segment 1. The reaction force of the shield machine 8 during tunnel excavation is received.
[0014]
When assembling the segment 1 in the hole excavated by the shield machine 8 using the segment assembling apparatus as described above, the segment 1 mounted on the segment supply apparatus (not shown) is moved by the segment gripping means 7 of the swing frame 6. After the suspension, when the fixed jack 30 is stretched and pressed against the inner peripheral surface of the segment 1, the segment 1 is held without wobbling.
[0015]
Subsequently, the rotation of the rotating frame 2 in the circumferential direction, the movement of the slide frame 4 in the front-rear direction, and the movement of the suspension beam 3 in the radial direction of the rotating frame 2 are combined as necessary, thereby The new segment 1 gripped by the gripping means 7 is arranged so as to be adjacent to the existing segment 1.
[0016]
At this time, regarding the segment 1 gripped by the segment gripping means 7, it is necessary to correct the yawing, rolling, and pitching postures with respect to the existing segment 1.
[0017]
The yawing, rolling, and pitching of the segment 1 referred to here means three-way swinging of the segment 1 with respect to the spherical bearing 5, and the yawing is centered on the axis extending in the radial direction of the rotating frame 2. 12 is a swing indicated by an arrow A in FIG. 12, and rolling is a swing indicated by an arrow B in FIG. 12 centering on an axis extending in the axial center line direction of the rotating frame 2. Pitching is a swinging movement indicated by an arrow C in FIG. 12 centering on an axis (axis extending in the tangential direction of the rotating frame 2) perpendicular to both the yawing rocking axis and the rolling rocking axis. That is.
[0018]
The yawing, rolling, and pitching of the segment 1 is allowed by free swinging on the swing frame 6 side with the spherical bearing 5 as a fulcrum with respect to the slide frame 4 side. As for the pitching, the expansion / contraction amount of the connecting jack 20 connecting the slide frame 4 and the swing frame 6 is individually adjusted and corrected, and the yawing of the segment 1 is performed by rolling and pitching the segment 1. After being corrected as appropriate, the slide frame 4 is moved so as to be pushed along the end face of the existing segment 1 for correction.
[0019]
As described above, when the new segment 1 gripped by the segment gripping means 7 is corrected in yawing, rolling and pitching postures with respect to the existing segment 1 and placed at a predetermined mounting position, the segment fastening means 31 What is necessary is just to fasten with respect to the existing segment 1, and the segment 1 will be assembled in cyclic | annular form by repeating the same operation | work with a segment assembly apparatus.
[0020]
By the way, the segment 1 has a shape in which the circumference is substantially equally divided into a plurality of parts (nine divisions in the example of FIG. 14, division angle θ = 360 ° / 9 = 40 °) as shown in FIG. Basically, as shown in FIGS. 15 to 17, the shape in the circumferential direction is an arc shape and the planar shape is a rectangular shape, and this segment 1 is referred to as an A segment for convenience. However, if all the segments 1 are composed of A segments, when assembling them in an annular shape, the last segment 1 to be assembled is against the recess formed between the existing segments 1. If the segment 1 is simply moved from the radial center side to the radial outer periphery side with respect to the recess, both end portions in the circumferential direction of the segment 1 interfere with the existing segment 1. To form an annulus When the last one segment 1 is fitted into the recess, the slide frame 4 is moved forward along the guide rod 14 by an amount corresponding to at least the width of the segment 1 (length in the axial direction). After moving to the (face side), the suspension beam 3 is moved to the outer peripheral side in the radial direction of the rotary frame 2 and the slide frame 4 is moved back along the guide rod 14 (toward the wellhead side). The segment 1 must be fitted into the recess between the segments 1.
[0021]
However, as described above, in order to move the segment 1 to the face side by an amount corresponding to the width of the segment 1, it is necessary to increase the dimension indicated by L in FIG. Since the cylindrical frame 9 of the shield machine 8 is extended forward, the overall length of the shield machine 8 is increased, and the entire apparatus is increased in size and cost. Will lead to.
[0022]
For this reason, one end surface in the circumferential direction has the same shape as the A segment, but the other end surface in the circumferential direction has a three-dimensionally inclined so-called B segment (see FIGS. 18 to 20). 2 so that one ring formed from 1 (symmetrical) is prepared, and the so-called K segment (FIG. 21 to FIG. 21) has a shape in which both circumferential end faces can be connected to the other circumferential end face of the B segment. 23) is prepared for one ring formed from a plurality of segments 1, and the last one segment 1 forming the ring is defined as the K segment, and the K segment is formed between the existing B segments. In order to minimize the amount of movement toward the face when the K segment is fitted into the recess, the shape is fitted to the recess.
[0023]
As shown in FIG. 19, the other circumferential end surface of the B segment has an offset angle α with reference to the radial inclination of the circumferential end surface of the A segment, and as shown in FIG. An insertion angle β is given to the line direction. The other B segment has a shape symmetrical to that shown in FIGS. 18 to 20 and is not shown.
[0024]
Further, both end faces in the circumferential direction of the K segment have an offset angle α with reference to the radial inclination of the circumferential end face of the A segment as shown in FIG. 22, and as shown in FIG. An insertion angle β is provided with respect to the axial direction, so as to coincide with the other circumferential end surface of the B segment.
[0025]
On the other hand, two box holes 80 are formed at both ends in the circumferential direction of each segment 1. For fastening the segments 1 adjacent to each other in the circumferential direction in each box hole 80. The hardware 47 is embedded in one piece, and two fastening hardware 47 embedded in the box holes 80 at both ends in the circumferential direction of the A segment are respectively shown in FIGS. Although it is disposed at the same position in the circumferential direction, the joint portion of the B segment and the K segment has an insertion angle β with respect to the axial direction as described above. As shown in FIG. 18 and FIG. 20, the two fastening hardware 47 embedded in the box hole 80 at the other end are disposed with their circumferential positions shifted, and the circumferential direction of the K segment. Two pieces embedded in box holes 80 at both ends One of each even fastening hardware 47, as shown in FIGS. 21 and 23, so that the circumferential position are arranged offset.
[0026]
Therefore, each of the segment fastening means 31 such as a bolt fastening machine or a cotter driving device for fastening the circumferential end surfaces of the segments 1 is circular along the inner peripheral surface of the segment 1 as shown in FIG. The swing frame 6 is disposed so as to be linearly translated in the circumferential direction, and the box hole 80 and the fastening hardware 47 of the joint portion between the B segment and the K segment in accordance with the offset in the axial direction. It is possible to cope with the positional deviation in the circumferential direction.
[0027]
15 to 23 show the fastening hardware 47 for fastening the bolt, and the fastening hardware for driving the cotter is not shown.
[0028]
[Problems to be solved by the invention]
However, in the case of the segment assembling apparatus as described above, the other end in the circumferential direction of the B segment is different from the shape of the fastening hardware 47 embedded in both ends in the circumferential direction of the A segment and one end in the circumferential direction of the B segment. The shape of the fastening hardware 47 embedded in the circumferential direction both ends of the part and the K segment is different, and moreover, the mating surfaces become complicated in shape in a three-dimensional inclination, and the types of parts increase and fastening The hardware 47 is also difficult to design, leading to increased costs.
[0029]
In view of such a situation, the present invention can make the shape of the fastening hardware embedded in each circumferential end of the segment common without complicating, reducing the types of parts and facilitating the design of the fastening hardware. Therefore, an object of the present invention is to provide a segment assembling apparatus that can reduce the cost.
[0030]
[Means for Solving the Problems]
The present invention attaches a suspension beam movably in the radial direction of the rotating frame to a rotating frame arranged so as to be able to rotate in a circumferential direction in a cylindrical frame of a shield machine, and the rotating frame is attached to the hanging beam. A slide frame is attached so as to be movable in the axial direction of the shaft, and a swing frame is attached to the slide frame so as to be swingable in an arbitrary direction around a fulcrum provided at a predetermined position. A segment assembling apparatus provided with segment gripping means for gripping a segment, and provided with segment fastening means for fastening circumferential end surfaces of a newly established segment and an existing segment,
The tilting drive device is configured by tilting the tilting frame with respect to the swing frame so as to be tiltable in accordance with the offset angle with respect to the radial direction of the segment circumferential end surface, and the segment is fastened in the tilting frame of the tilting drive device. Means is configured to turn freely according to the insertion angle of the segment circumferential end surface with respect to the axial direction of the segment, and a turning drive device is configured, and the segment fastening means is operated by the operation of the tilt drive device and the operation of the turn drive device. Configured to tilt and swivel The present invention relates to a segment assembling apparatus.
[0031]
According to the above means, the following operation can be obtained.
[0032]
The segment fastening means is tilted by an angle corresponding to the offset angle at the joining surface of the segment by the operation of the tilt driving device, and the segment fastening means is swung by an angle corresponding to the insertion angle at the joining surface of the segment by the operation of the turning drive device. The segment fastening means is arranged in parallel to the joint surface of the segments.
[0033]
For this reason, even if the joint surface of the segment is inclined three-dimensionally, it becomes possible to embed a fastening hardware in a direction orthogonal to the joint surface, and the shape of the fastening hardware is in a normal segment. This is the same as that used, and it is not necessary to increase the number of parts, and the design of the fastening hardware is not difficult, which is advantageous in terms of cost.
[0034]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described together with illustrated examples.
[0035]
FIGS. 1-9 is an example of the form which implements this invention, Comprising: The part which attached | subjected the code | symbol same as FIGS. 10-23 in FIG. Although the same as the conventional one shown in FIG. 23, the feature of this example is that, as shown in FIG. 1 to FIG. 9, segment fastening is performed in accordance with the offset angle α with respect to the radial direction of the end surface of the segment 1 circumferential direction. A tilt drive device 70 for tilting the means 31 with respect to the swing frame 6 and a swing drive for swinging the segment fastening means 31 with respect to the swing frame 6 in accordance with the insertion angle β with respect to the axial direction of the end surface of the segment 1 in the circumferential direction. The apparatus 71 is provided.
[0036]
As shown in FIGS. 1 to 4, the tilt drive device 70 is a circle formed on a support frame 72 protruding from the swing frame 6, with a base point O offset from the radial direction of the end surface of the segment 1 circumferential direction as a center. An arcuate guide rail 73 is attached, and a tilting frame 74 is tiltably disposed along the arcuate guide rail 73 via a guide block 75, and the tilting frame 74 is interposed between the tilting frame 74 and the swinging frame 6. 1 to 4, the turning drive device 71 has a segment 1 at a substantially central portion in the tilting frame 74 as shown in FIGS. A pivot support shaft 77 extending in the radial direction of the pivot support shaft 77 is attached so that the base point O is positioned on an extension of the axial center line of the pivot support shaft 77, and a segment is attached to the pivot support shaft 77. A swivel frame 78 on which the connecting means 31 is disposed is pivotably attached, and a swivel cylinder 79 for swiveling the swivel frame 78 is attached between the swivel frame 78 and the tilting frame 74. The tilt cylinder 76 is extended to tilt the tilt frame 74 along the arcuate guide rail 73 by an angle corresponding to the offset angle α, and the swing cylinder 79 is contracted to swing the swing frame 78 to the swing support shaft. The segment fastening means 31 can be arranged in parallel with the joint surface of the B segment and the K segment by turning about 77 at an angle corresponding to the insertion angle β.
[0037]
In the illustrated example, a cotter driving device is used instead of a bolt fastening machine as the segment fastening means 31 of the segment assembling device. Accordingly, the fastening hardware 47 of the segment 1 is not for bolt fastening. A cotter driving device is shown, and a cotter driving device used in the illustrated example will be described below.
[0038]
In the cotter driving device 48 as the segment fastening means 31 shown in FIGS. 5 and 6, the piston rod 49 is provided at the tip of a cylinder 51 of a driving jack 50 provided with a piston rod 49 for driving the cotter 36 so as to be extendable. 49 is slidably inserted, and a holder 52 having a front shape that protrudes downward is mounted. The front and rear positions of the lower part of the holder 52 (left and right positions in FIG. 6) The center portions in the longitudinal direction of the pair of front and rear links 53 extending in the joint direction (left and right direction in FIG. 5) are swingably attached via pins 54, and both ends of both links 53 are connected by a connecting shaft 55. Thus, the base end portions of the pair of left and right levers 56 are pivotally attached to the intermediate portion of each connecting shaft 55.
[0039]
Here, on the outer side of the distal end portion of each lever 56, a hook that can be hooked on an overhang portion 47 a at the entrance edge of the fastening groove 35 formed at the boundary between the existing segment 1 and the new segment 1 is possible. A pawl 57 is formed, and a gripping pawl 58 capable of hooking a neck portion 36 c formed at the upper end portion of the cotter 36 is formed inside the front end portion of each lever 56.
[0040]
Further, both ends of the links 53 are also connected by an inverted U-shaped bracket 59 (see FIG. 6) which is disposed outside the connecting shafts 55 and detours upward so as not to interfere with the levers 56. Opening / closing jacks 60 for swinging the levers 56 so that their distal ends approach and separate from each other are pivotally attached to the upper intermediate portions of the brackets 59 via pins 61, respectively. A front end portion of the piston rod 62 of the 60 and a bracket 63 protruding outside the base end portion of each lever 56 are connected via a pin 64.
[0041]
5 and 6, R is an elastic member interposed in the swing clearance portion of both links 53 so as to prevent the backlash of both links 53.
[0042]
The cotter driving device 48 configured in this manner is fixed to the base plate 65 disposed on the back side of the cotter driving device 48 via the holder 52, and the base plate 65 is previously described with reference to FIGS. A bracket 67 slidably attached via a guide block 68 to a guide rail 66 disposed on a swivel frame 78 in the swivel drive device 71 of the segment assembling apparatus, and projecting from the bottom lower end of the base plate 65, The fluid pressure cylinder 69 (see FIGS. 2 and 4) arranged in parallel with the guide rail 66 can be moved in the radial direction of the segment 1 by an expansion / contraction operation.
[0043]
On the other hand, the fastening groove 35 is formed by fastening hardware 47 embedded in each end face portion of the segments 1 to be fastened, and the fastening hardware 47 is mainly opened to the end face side of the segment 1. It has a C-shaped flat cross-sectional shape (see FIG. 7A), and when the end surfaces of the segments 1 are brought into contact with each other, a fastening groove 35 having a substantially H-shaped planar shape is formed by the fastening hardware 47 of both. The width dimensions of the portions 47b of the respective fastening hardware 47 that are brought into contact with each other are gradually reduced toward the counter driving direction of the cotter 36. Further, the cotter 36 driven into the fastening groove 35 has a substantially H-shaped planar shape (see FIG. 7B) in which thick portions 36a are formed on both sides thereof, and is sandwiched between the thick portions 36a. The width dimension of the thin wall portion 36b is gradually increased in the driving direction of the cotter 36. When the cotter 36 is driven into the fastening groove 35, the respective fastening hardwares 47 are attracted to each other by a wedge action. Thus, the segments 1 are brought into close contact with each other to be fastened together.
[0044]
Thus, each lever 56 is closed by the open / close jack 60 so that the tip end portions are close to each other, whereby the neck portion 36c of the cotter 36 is hooked and held by the holding claws 58, and then the cotter driving device 48 is mounted on the base plate. When the cotter 36 and the tip of each lever 56 are inserted into the fastening groove 35 and moved to the segment 1 side together with the fastening groove 35 and each lever 56 is opened by the opening / closing jack 60 so that the tip part is separated from each other, A latching claw 57 of each lever 56 is latched by an overhang portion 47 a at the entrance edge of the fastening groove 35, and the gripping by the gripping claw 58 of the cotter 36 is released, and the latching claw 57 of each lever 56 is released. It is possible to drive the cotter 36 with the piston rod 49 by taking a reaction force by engaging with the fastening groove 35. At this time, even if the relative position and driving angle of the cotter driving device 48 with respect to the fastening groove 35 are slightly deviated, the link 53 swings due to the reaction force acting on one of the latching claws 57. Since the reaction force is distributed to the other latching claw 57 by the swing of the link 53 and the reaction force acting on both the latching claws 57 is balanced, the reaction force is applied to the latching claw 57 of each lever 56. It is possible to share evenly.
[0045]
As described above, the example in which the cotter driving device 48 is adopted as the segment fastening means 31 of the segment assembling apparatus has been shown. However, a bolt that is conventionally known for the base plate 65 instead of the cotter driving device 48 is shown. Needless to say, a fastening machine may be attached.
[0046]
Next, the operation of the illustrated example will be described.
[0047]
The tilt cylinder 76 of the tilt drive device 70 is extended to tilt the tilt frame 74 along the arcuate guide rail 73 by an angle corresponding to the offset angle α, and the swing cylinder 79 of the swing drive device 71 is contracted to turn the swing frame. When 78 is swiveled around the swivel support shaft 77 by an angle corresponding to the insertion angle β, the cotter driving device 48 as the segment fastening means 31 is arranged in parallel to the joint surface of the B segment and the K segment. .
[0048]
For this reason, even if the joint surface of the B segment and the K segment is inclined three-dimensionally, the fastening hardware 47 can be embedded in a direction orthogonal to the joint surface as shown in FIGS. Therefore, the shape of the fastening hardware 47 is the same as that used for the A segment, and it is not necessary to increase the number of parts, and the design of the fastening hardware 47 is not difficult, which is advantageous in terms of cost.
[0049]
In this way, the shape of the fastening hardware 47 respectively embedded in both ends in the circumferential direction of the segment 1 can be made common without complicating, and the types of parts can be reduced and the design of the fastening hardware 47 can be facilitated. , Leading to cost reduction.
[0050]
The segment assembling apparatus of the present invention is not limited to the above-described illustrated examples, and various modifications can be made without departing from the scope of the present invention.
[0051]
【The invention's effect】
As described above, according to the segment assembling apparatus of the present invention, the shape of the fastening hardware embedded in each circumferential end of the segment can be made common without complicating, reducing the types of parts and fastening It is possible to facilitate the design of hardware and to achieve an excellent effect that leads to cost reduction.
[Brief description of the drawings]
FIG. 1 is a front view of an example of an embodiment for carrying out the present invention.
2 is a plan view showing a tilting drive device and a turning drive device in an example of an embodiment of the present invention, and is a view corresponding to II-II in FIG.
3 is a front sectional view showing a tilting drive device and a turning drive device in an example of an embodiment of the present invention, and is a cross-sectional view corresponding to III-III section of FIG.
4 is a side cross-sectional view showing a tilting drive device and a turning drive device in an example of an embodiment of the present invention, and is a cross-sectional view corresponding to the IV-IV cross section of FIG.
FIG. 5 is an enlarged view showing details of a cotter driving device used as segment fastening means in an example of an embodiment of the present invention.
6 is a side view of FIG. 5. FIG.
7A is a cross-sectional view of the fastening hardware viewed from the VII-VII direction in FIG. 5, and FIG. 7B is an arrow view of the cotter viewed from the VII-VII direction in FIG.
FIG. 8 is a plan view of a B segment used in an example of an embodiment of the present invention.
FIG. 9 is a plan view of a K segment used in an example of an embodiment of the present invention.
FIG. 10 is a front view showing an example of a segment assembling apparatus.
11 is a side view of FIG.
12 is an enlarged view of a main part of FIG.
13 is a cross-sectional view taken along the line XIII-XIII of FIG.
FIG. 14 is a view of a segment assembled in an annular shape when viewed from the wellhead side.
FIG. 15 is a perspective view of an A segment.
FIG. 16 is a side view of an A segment.
17 is a plan view of the A segment, and is a view taken along arrow XVII-XVII in FIG. 16;
FIG. 18 is a perspective view of a B segment.
FIG. 19 is a side view of the B segment.
20 is a plan view of the B segment, and is a view taken in the direction of arrows XX-XX in FIG. 19;
FIG. 21 is a perspective view of a K segment.
FIG. 22 is a side view of the K segment.
23 is a plan view of the K segment, and is a view taken in the direction of arrows XXIII-XXIII in FIG. 22;
FIG. 24 is a plan view showing an example in which segment fastening means is slidably arranged in an example of a segment assembling apparatus.
[Explanation of symbols]
1 segment
2 rotating frame
3 Hanging beam
4 Slide frame
5 Spherical bearing
6 Swing frame
7 Segment gripping means
8 shield machine
9 Cylindrical frame
31 Segment fastening means
47 Fastening hardware
48 cotter driving device
70 Tilt drive device
71 Swiveling drive

Claims (1)

A hanging beam is attached to a rotating frame disposed in a cylindrical frame of the shield machine so as to be able to rotate in a circumferential direction, and is movable in the radial direction of the rotating frame. A slide frame is attached so as to be movable in a direction, and a swing frame is attached to the slide frame so as to be swingable in an arbitrary direction around a fulcrum provided at a predetermined position, and a segment is gripped by the swing frame. A segment assembling apparatus that is provided with segment gripping means and is provided with segment fastening means for fastening circumferential end surfaces of a newly established segment and an existing segment,
A tilting drive device is constructed by disposing the tilting frame with respect to the swing frame so as to be freely tiltable in accordance with the offset angle with respect to the radial direction of the segment circumferential end surface, and the segment is fastened in the tilting frame of the tilting drive device. Means is configured to turn freely according to the insertion angle of the segment circumferential end face with respect to the axial direction of the segment, and a turning drive device is configured, and the operation of the tilting drive device and the action of the turning drive device are used to form the segment fastening means. A segment assembling apparatus characterized in that it can be tilted and swiveled .

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