JP2003227300A - Elector device and tunnel excavator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an elector device and a tunnel excavator enabling automation of serial work from holding of a segment to removal of a hanging metal fitting after assembly of the segment for reduction in a load of a worker and a construction time for lowering a construction cost. <P>SOLUTION: An elector device 18 assembling the segments S into a ring form on the inside wall face of an existing tunnel is provided with a rotational ring 19 supported by a supporting wall 16 and a supporting cylinder 17 rotationally along the tunnel circumference direction, a lifting/lowering arm 20 supported by the rotational ring 19 movably along the tunnel radial direction, and a holding grip 21 attached to the lifting/lowering arm 20 and capable of holding the segment S via the hanging metal fitting W. The holding grip 21 is provided with a hydraulic jack 60, by which a hanging pin 62 is attached/ detached to/from the hanging metal fitting W, and a rotating device constructed of a rotary motor 54 capable of turning the hanging metal fitting W, to which the hanging pin 62 is attached by means of the hydraulic jack 60, a driving pinion 55, a ring gear 56, and a key 57 and the like arranged between the ring gear 56 and a rotary shaft 52. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used as an erector device for assembling a lining member such as a segment in a ring shape on an inner wall surface of an existing tunnel, and as a shield excavator or a tunnel boring machine equipped with this erector device. Regarding tunnel excavator.

[0002]

2. Description of the Related Art Generally, in a shield excavator, a cutter head which can be driven and rotated is rotatably mounted on a front portion of a cylindrical excavator body, and a large number of cutter bits are attached to the cutter head, while a rear portion is mounted on the rear portion. Is equipped with a large number of shield jacks for propelling the excavator body, and is equipped with an erector device for assembling segments on the inner wall surface of an existing tunnel. Therefore, when the shield jack is extended while rotating the cutter head, the excavator main body propels the excavator body by receiving the excavation reaction force from the existing segment, while the cutter head excavates the ground in front, while the erector device makes a segment on the tunnel inner wall surface. By assembling
You can build tunnels in succession.

In such a shield excavator, in the erector device, a swivel ring is supported at the rear of the excavator body so as to be swivelable in the tunnel circumferential direction, and an elevating arm is provided in the swivel ring along the tunnel radial direction. Movably supported,
A holding grip capable of holding the segment is attached to the tip of the elevating arm. Therefore, the holding grip first moves up and down to hold the segment carried into the existing tunnel, then turns to a predetermined assembly position, and again moves up and down to install the held segment on the inner wall surface of the tunnel.

[0004]

By the way, in the above-mentioned erector device, when holding the segment by the holding grip, the hanging pin (grasping member) is inserted into the hanging metal fitting screwed into the segment in advance. The segment was held by doing. The hanging metal fitting is removed from the segment after the segment is assembled.

In the conventional erector device, the lifting pins are inserted into and removed from (removed from) the hanging fittings by a hydraulic jack (actuator) or the hanging fittings are rotated by a rotating device in order to remove the hanging fittings from the segments. However, these hydraulic jacks and rotating devices are individually attached to the holding grips, and there is no conventional holding grip that also has the hydraulic jacks and rotating devices.

Therefore, a series of operations from holding the segment to removing the hanging metal fitting after segment assembly cannot be automatically performed by the erector device, resulting in a heavy burden on the operator and an increase in construction cost (delay of construction period, etc.). There was a problem to do.

The present invention solves such a problem and enables automation of a series of operations from the holding of the lining member to the removal of the hanging metal fitting after the lining member is assembled, thereby imposing a burden on the operator. It is an object of the present invention to provide an erector device and a tunnel excavator that can reduce the construction cost by reducing the construction period and the construction period.

[0008]

According to another aspect of the invention, there is provided an eclectic device for assembling a lining member in a ring shape on an inner wall surface of an existing tunnel. Swivel ring supported so as to swivel along the direction, an elevating body supported by the swivel ring so as to be movable along the tunnel radial direction, and a holding member that is attached to the elevating body and can hold the lining member The holding grip includes a gripping member that is attachable to and detachable from the hanging metal fitting screwed into the lining member, an actuator that attaches and detaches the gripping member to the hanging metal fitting, and the gripping member is attached to the hanging metal fitting. In this state, the holding member is rotated to remove the hanging fitting from the lining member.

Therefore, when the rotating device is operated, the actuator is rotated regardless of whether the actuator is operated or not. However, the damage due to the entanglement of wirings or pipes for supplying fluid pressure such as electric or hydraulic to the actuator is prevented. Therefore, it is preferable to provide a slip ring or a rotary joint between the rotating portion and the non-rotating portion.

According to a second aspect of the invention, the actuator is a hydraulic jack in which the actuator is supported together with the grip member on a rotation shaft rotated by the rotation device.
Hydraulic pressure is supplied to and discharged from the hydraulic jack through a rotary joint wound around the rotary shaft.

According to a third aspect of the present invention, the eclectic device is characterized in that the rotary shaft is retractably accommodated in a casing supporting the rotary shaft and is constantly urged toward the extension side.

Further, in the tunnel excavator according to the invention of claim 4, a tubular excavator main body, a propulsion jack for advancing the excavator main body, and a front portion of the excavator main body are rotatably mounted in a drive manner. In a tunnel excavator equipped with a cutter head and an erector device supported by a rear portion of the excavator body and assembled with a lining member on an inner wall surface of an existing tunnel, the erector device is a tunnel circumferential direction at a rear portion of the excavator body. Swivel ring supported along the swivel ring, an elevating body supported by the swivel ring so as to be movable in the tunnel radial direction, and a holding grip attached to the elevating body and capable of holding the lining member. The holding grip includes: a holding member that is attachable to and detachable from a hanging fitting screwed into the lining member; an actuator that attaches and detaches the holding member to the hanging fitting; The gripping member is rotated by the same gripping member while wearing and characterized by having a rotating device to remove the hanger and the lining member.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an erector device and a tunnel excavator according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a schematic side sectional view of a shield excavator showing an embodiment of the present invention, FIG. 2 is a sectional view taken along the line II--II of FIG. 1, FIG. 3 is a front view of a holding grip in an erector device, and FIG.
3 is a sectional view taken along line IV-IV of FIG. 3, FIG. 5 is a sectional view taken along line VV of FIG. 3, FIG. 6 is an enlarged sectional view of a segment suspender in a holding grip, FIG. 7 is a side view of a segment supply device, and FIG. FIG. 4 is an operation explanatory view of the segment supply device.

As shown in FIG. 1, a cutter head 3 is rotatably mounted on the front of a cylindrical excavator main body 2 of a muddy water shield excavator 1.
A large number of cutter bits 4 are attached to the front surface of the and the copy cutter 5 is attached to the peripheral surface. On the other hand, a ring gear 6 is fixed to the rear portion of the cutter head 3, and a cutter turning motor 7 is attached to the excavator body 2, and a drive gear 8 of the cutter turning motor 7 meshes with the ring gear 6. There is. Therefore, when the cutter turning motor 7 is driven to drive the drive gear 8 to rotate, the cutter head 3 can be rotated via the ring gear 6.

A bulkhead 9 is attached to the excavator main body 2 at a position behind the cutter head 3,
A chamber 10 is formed between the cutter head 3 and the bulkhead 9. Further, the chamber 10 is provided with the other end of the mud-sending pipe 11 and the sludge-draining pipe 12 which have one end extended to the outside of the shield excavator, and the other end of which is opened.
An agitator 13 for stirring and mixing excavated soil and muddy water is provided near the opening of the.

On the other hand, a plurality of shield jacks 14 are juxtaposed along the circumferential direction around the inside of the rear portion of the excavator main body 2. The shield jacks 14 extend rearward in the excavation direction and the spreader 15 is attached to the existing segment S. By pressing, the excavator main body 2 can be moved forward by the reaction force.

Further, as shown in FIG. 2, the excavator body 2
A support cylinder 17 is formed by the support wall 16 at the rear part,
An erector device 18 for assembling the segment S on the support cylinder 17 is provided. The erector device 18 includes a swivel ring 19 supported by the support cylinder 17 so as to swivel in the tunnel circumferential direction, and an elevating and lowering body supported by the swivel ring 19 so as to be movable in the tunnel radial direction. The arm 20 and the holding grip 21 that is attached to the elevating arm 20 and can hold the segment S via a suspending metal W are generally configured.

The turning ring 19 is supported by a guide roller group 22 in which a plurality of sets (four sets in the illustrated example) of the outer peripheral surface portion are arranged on the inner peripheral surface of the support cylinder 17 at predetermined intervals in the circumferential direction. It A pair of front and rear rollers is provided in each guide roller group 22, and a ring gear 23 is attached to the outer peripheral surface of the turning ring 19 between the pair of front and rear rollers. The drive gears 2 of the two drive motors 24 fixed to the ring gear 23 at the point symmetrical positions of the support cylinder 17.
5 meshed with each other. Therefore, when the two drive motors 24 are synchronously driven and their drive gears 25 are rotationally driven, the swivel ring 19 can be swung (rotated) via the ring gear 23.

A pair of left and right outer cylinders (guide cylinders) 26 are substantially parallel to the swivel ring 19, and the bracket 2
The inner cylinders (guide rods) 28 are movably supported by the outer cylinders 26, respectively, and the lower ends of the inner cylinders 28 are located at the center thereof via the elevating arms 20 described above. It is connected to the holding grip 21 located.
A lifting jack 29 is attached to each outer cylinder 26, and the tip of the rod is connected to each lifting arm 20. Therefore, when the elevating jack 29 is driven to expand and contract, the holding grip 21 can be moved along the tunnel radial direction via the elevating arms 20.

As shown in FIGS. 3 to 5, the holding grip 21 includes a second grip box 32 in a first grip box 31 attached to the elevating arm 30.
Is supported by a pitching jack 33 so as to be vertically swingable, and a third grip box 34 is supported in the second grip box 32 by a slide jack 35 and a slide guide 36 so as to be movable along the tunnel longitudinal direction. . Then, the third grip box 34
A segment suspender 37 is supported in the center of the shaft so that it can be finely adjusted so as to swing horizontally, and support jacks 39 having segment supports 38 attached to the rod ends on both sides thereof are supported by a support outer cylinder 40 and a support inner cylinder 41. It is attached so that it can expand and contract. Reference numeral 42 in FIGS. 3 and 4 is a segment lifting tool guide, and reference numeral 43 in FIG. 5 is a swing fulcrum pin of the second grip box 32.

As shown in FIG. 6, the segment hanging device 37 has a cylindrical casing 51 whose upper end is supported by a pin 46 on a support bracket 45 of the third grip box 34 via a spherical bearing 44. Tubular casing 51
The upper half of the rotary shaft 52 is retractably accommodated therein, and is normally urged toward the extension side by a tension spring 53, and a rotary motor 54, a drive pinion 55, which are assembled to the tubular casing 51, It is rotatably accommodated by a rotating device including a ring gear 56 and a key 57 provided between the ring gear 56 and the rotary shaft 52. A rotary joint 58 is fitted to the upper half of the lower half of the rotary shaft 52, but the rotary joint 58 is fitted in a non-rotating state, and a pipe block 59 is attached to the lower half of the rotary shaft 52.
Is fitted. A hydraulic pin (actuator) 60 is driven by a hydraulic jack (actuator) 60 via a connecting rod 61, and a suspending pin (grasping member) 62 that can be inserted / removed from the lateral direction is attached to the engaging hole Wa of the suspending metal W.

In the hydraulic jack 60, the oil passages 52a and 52b inside the rotary shaft 52 from the supply / exhaust ports Pa and Pb of the rotary joint 58 and the piping block 59.
The hydraulic pressure from a hydraulic pressure supply source (not shown) is supplied and discharged through the supply / discharge ports Ta and Tb and the hydraulic hoses Ha and Hb.

Further, as shown in FIG. 1, a segment supply device 70 is installed in the existing tunnel behind the excavator body 2, and a hoist (not shown) moving on a hoist beam 71 is installed on the device. The transported segment S can be supplied to the above-described elector device 18. The hoist has a hoisting tool for hoisting the segment S, and the segment S carried into and accumulated in the segment storage area in the existing tunnel can be transported to the segment supply device 70 by a transport vehicle (not shown). Further, in this case, the above-mentioned hanging metal fitting W is detachably attached to the segment S by screw connection, and the hoist can lift and support the segment S via the hanging metal fitting W, and the erector device 18 can operate the segment. The segment S can be received from the supply device 70.

As shown in FIG. 7, the segment supply device 70 includes a pair of left and right linear guides 7 on the pedestal 72.
A front / rear frame 75 that can be moved in the front-rear direction (excavation direction) by a pair of left and right supply jacks 74 via a three-way structure, and a lock jack 77 that traverses in the left-right direction on the front-rear frame 75 via a pair of front-rear traverse linear guides 76. A traverse frame 78 capable of being provided, and a pair of left and right yawing steady rest jacks 80 which are installed on the traverse frame 78 and prevent the yawing of the segment S mounted on the traverse frame 78 in cooperation with the stopper 79. Therefore, the segment S carried into the traverse frame 78 by the hoist is moved in the front-rear direction by the stopper 79 and the yawing steadying jack 80, and in the lock jack before being supplied to the elector device 18 by the supply jack 74. The position is fixed in the left-right direction by 77.

A suspending metal collecting box 90 is attached to the front ends of the front and rear frames 75 of the segment supplying device 70 via a bracket 81, and the suspending metal W is automatically transferred from the assembled segment S by the erector device 18. It is supposed to be collected at. That is, the hanging metal fitting W removed by the rotation of the rotary shaft 52 of the segment hanging equipment 37 described above is located at the position of the front and rear frame 75 shown in FIG. 8 (the hanging fitting collection box 90 is located immediately below the segment hanging equipment 37). ), The lifting pin 62 is pulled out from the engaging hole Wa of the metal fitting W by the extension operation of the hydraulic jack 60 in the segment metal fitting 37.
Are automatically dropped and collected in the hanging fitting collection box 90.

Reference numeral 82 in FIG. 1 denotes a support jack for supporting the front end portion of the front and rear frame 75 when it moves forward. Further, although not shown, a work scaffold for fastening the ring-shaped assembled segments S to each other, such as being supported by the support cylinder 17 via a frame, is provided at the rear of the excavator main body 2, and a ring. The segment S in a predetermined shape (for example,
A shape-retaining device that corrects the shape into a perfect circle and holds it is provided.

Here, the tunnel excavation work by the muddy water type shield excavator of the present embodiment thus constructed will be described.

As shown in FIG. 1, first, while the cutter head 3 is rotated by the cutter turning motor 7, a plurality of shield jacks 14 are extended to press the spreader 15 against the existing segment S, and the reaction force of the spreader 15 causes the excavator body 2 to move. To move forward. Then, the cutter bit 4 of the cutter head 3
Excavates the ground in front, and the excavated soil is taken into the chamber 10 and discharged from the mud pipe 12 to the outside, while the erector device 18 continues to assemble the segment S.

The segment S formed by this elector device 18
In the assembling work, the hoist (not shown) suspends the segment S from the segment storage and conveys it to the segment supply device 70. Next, the segment supply device 7
0 fixes the segment S in the front-rear direction and the left-right direction as described above, and then supplies the segment S directly below the holding grip 21 of the erector device 18 at the standby position (segment gripping position). That is, the front / rear frame 75 is moved forward by the extension operation of the supply jack 74, and the front end portion thereof is supported by the support jack 82.

3 and 4, after the pitching jack 33 and the slide jack 35 are expanded and contracted, the segment suspending tool 37 is positioned in the front-rear direction with respect to the suspending metal fitting W screwed into the segment S. By the extension operation of the lifting jack 29, the lifting arm 30 is extended and the holding grip 21 is lowered. After that, when the hydraulic jack 60 of the segment suspension 37 is contracted, the suspension pin 62 is suspended.
Is inserted into the engaging hole Wa of the hanging fitting W (see FIG. 4B), and the segment support 38 is pressed against the segment S by the extension operation of the support jack 39 to hold the segment S (see FIG. 3). .

Next, after the raising / lowering jack 29 is contracted, the raising / lowering arm 30 is contracted to raise the holding grip 21, and then the drive motor 24 is driven to turn the turning ring 19, and the segment S held by the holding grip 21. Once the is transferred to the specified assembly position in the tunnel, lift jack 2
The extension operation of 9 extends the elevating arm 30 to extend the segment S.
Assemble.

After the assembly of the segment S is completed, the rotary motor 54 in the segment suspender 37 is driven to rotate the rotary shaft 52 and the piping block 59 to remove the suspending fitting W from the segment S ((a) in FIG. 4). reference). At this time, since the rotating shaft 52 is retractably accommodated in the cylindrical casing 51 that supports the rotating shaft and is constantly biased toward the extension side by the tension spring 53, the hanging metal fitting W is rotated. It is possible to effectively allow the backward movement (contraction) of the rotary shaft 52 and the like when loosening with a simple structure. After that, the lifting arm 30 is contracted and the support jack 39 is contracted to pivot the pivot ring 19 to return the holding grip 21 to the standby position.

At this standby position, as shown in FIG. 8, the front and rear frames 75 of the segment supply device 70 preliminarily loaded with the segment S to be assembled next move forward during the assembling work of the segment S, The hanging fitting collection box 90 is prepositioned so that it can be located directly below the holding grip 21.

Here, when the hanging pin 62 is pulled out from the engaging hole Wa of the hanging metal fitting W by the extension operation of the hydraulic jack 60 of the segment hanging equipment 37, the hanging metal fitting W falls into the hanging metal fitting collection box 90. It is stored. After that, front and rear frames 7
If the hanging metal fitting W of the segment S to be assembled next is positioned immediately below the holding grip 21 by moving 5 further forward, the assembly of the segment S is continued. On the other hand, the hanging metal fitting W in the hanging metal fitting collection box 90 is the segment feeding device 70.
After the rearward movement (retraction) of the front and rear frames 75, the worker appropriately takes out the hoisting metal collecting box 90 and collects it. Further, it may be possible to replace it with an empty hanging fitting collection box 90 when a plurality of them are stored. A hoist may be used for the recovery.

As described above, in this embodiment, the elector device 1
In the holding grip 21 of FIG.
In addition to being able to automatically insert / remove (attach / detach) the suspending pin 62 of the suspending pin 62 into the segment S screwed into the segment S by expanding / contracting the hydraulic jack 60, it was assembled to the tubular casing 51 after the segment assembly. The hanging pin 62 can be automatically removed from the segment S by a rotating device including the rotary motor 54, the drive pinion 55, the ring gear 56, and the key 57 provided between the ring gear 56 and the rotary shaft 52. Therefore, the segment S
A series of operations from the holding of the to the removal of the hanging metal fitting W after the segment assembly can be performed completely automatically by the erector device 18, and the burden on the operator can be reduced and the construction cost can be reduced by shortening the construction period. Can be reduced.

In the segment suspension 37, the rotary joint 58 is used to supply and discharge the hydraulic pressure from the hydraulic supply source which is the non-rotating part to the hydraulic jack 60 which is assembled to the piping block 59 which is the rotating part. Therefore, the entanglement of the hydraulic pipe and the like can be avoided, and the damage can be prevented in advance.

Further, in this embodiment, the hanging metal fitting W removed from the segment S can be automatically dropped and stored in the hanging metal fitting collection box 90 attached to the segment supply device 70, so that it can be collected. Removed hanging bracket W
There is no need for a special transport means for transporting the hanging metal fittings to the hanging metal fitting collection box 90, which simplifies the device and automatically moves the hanging metal fittings W dropped and stored in the hanging metal fitting collection box 90 to an appropriate place. It is possible to reduce the burden on the operator.

Needless to say, the present invention is not limited to the above embodiments, and various changes can be made without departing from the scope of the present invention. For example, an air cylinder, an electric motor, or the like may be used instead of the hydraulic jack as the actuator that drives the hanging pin. Further, the tunnel excavator of the present invention may be a mud pressure shield excavator,
In this case, a screw conveyor may be used instead of the water supply pipe, the drainage pipe, and the agitator. Furthermore, the tunnel excavator of the present invention can be applied to a tunnel boring machine.

[0040]

As described above in detail, according to the erector device of the first aspect of the invention, in the erector device in which the lining member is assembled in a ring shape on the inner wall surface of the existing tunnel,
A swivel ring supported by a support member so as to swivel along the tunnel circumferential direction, an elevating body supported by the swivel ring so as to be movable along the tunnel radial direction, and the lining member attached to the elevating body. And a holding member that can be attached to and detached from a hanging fitting screwed into the lining member, an actuator that attaches and detaches the holding member to the hanging fitting, and the hanging fitting. Since it has a rotating device for rotating the gripping member with the gripping member attached thereto and removing the hanging metal fitting from the lining member, from holding the covering material to removing the hanging metal fitting after the covering material is assembled. It is possible to automate the series of operations, to reduce the burden on the operator and reduce the construction cost by shortening the construction period.

According to the erector device of the invention of claim 2,
The actuator is a hydraulic jack supported together with the gripping member on a rotary shaft rotated by the rotating device, and hydraulic pressure is supplied to and discharged from the hydraulic jack via a rotary joint wound on the rotary shaft. Therefore, the entanglement of the hydraulic pipe or the like between the rotating portion and the non-rotating portion can be avoided, and the damage can be prevented in advance.

According to the erector device of the invention of claim 3,
Since the rotating shaft is retractably accommodated in the casing supporting the rotating shaft and is always urged toward the extension side,
It is possible to effectively allow the backward movement of the rotating portion when the hanging metal fitting is rotated and loosened with a simple structure.

According to the tunnel excavator of the fourth aspect of the present invention, the tubular excavator main body, the propulsion jack for advancing the excavator main body, and the front part of the excavator main body are rotatably mounted on the excavator main body. In a tunnel excavator equipped with a cutter head and an erector device supported by a rear portion of the excavator body and assembled with a lining member on an inner wall surface of an existing tunnel, the erector device is a tunnel circumferential direction at a rear portion of the excavator body. Swivel ring supported along the swivel ring, an elevating body supported by the swivel ring so as to be movable in the tunnel radial direction, and a holding grip attached to the elevating body and capable of holding the lining member. The holding grip includes: a holding member that is attachable to and detachable from a hanging fitting screwed into the lining member; an actuator that attaches and detaches the holding member to the hanging fitting; Since it has a rotating device for rotating the gripping member with the gripping member attached thereto and removing the hanging metal fitting from the lining member, from holding the covering material to removing the hanging metal fitting after the covering material is assembled. It is possible to automate the series of operations, to reduce the burden on the operator and reduce the construction cost by shortening the construction period. As a result, excavation workability and reliability of the tunnel excavator can be improved.

[Brief description of drawings]

FIG. 1 is a schematic side sectional view of a shield excavator showing an embodiment of the present invention.

FIG. 2 is a sectional view taken along line II-II in FIG.

FIG. 3 is a front view of a holding grip in the erector device.

4 is a sectional view taken along line IV-IV in FIG.

5 is a sectional view taken along line VV of FIG.

FIG. 6 is an enlarged cross-sectional view of a segment suspender in the holding grip.

FIG. 7 is a side view of the segment supply device.

FIG. 8 is an explanatory view of the operation of the segment supply device.

[Explanation of symbols]

1 Muddy water type shield excavator 2 excavator body 3 cutter head 4 Catterbid 5 Copy cutter 6 ring gear 7 Cutter rotation motor 8 drive gear 9 bulkheads 10 chambers 11 mud pipe 12 Drainage pipe 13 Agitator 14 Shield jack 15 spreader 16 Support wall 17 Support tube 18 Electa device 19 swivel ring 20 Lifting arm 21 holding grip 22 Guide roller group 23 ring gear 24 drive motor 25 drive gear 26 Outer cylinder (guide cylinder) 27 bracket 28 Inner cylinder (guide rod) 29 Lifting jack 30 Lifting arm (lifting body) 31 first grip box 32 Second grip box 33 pitching jack 34 Third Grip Box 35 slide jack 36 Slide guide 37 segment hanging 38 segment support 39 Support jack 40 Support outer cylinder 41 Support inner cylinder 42 segment sling guide 43 Swing fulcrum pin 44 spherical bearing 45 Support bracket 46 pin 51 Cylindrical casing 52 rotation axis 52a, 52b Oil passage 53 tension spring 54 rotation motor 55 Drive Pinion 56 ring gear 57 key 58 rotary joint 59 Piping block 60 hydraulic jack (actuator) 61 connecting rod 62 Hanging pins (holding members) 70 segment feeder 71 Hoist Beam 72 mount 73 Front and rear linear guide 74 supply jack 75 front and rear frame 76 Traverse linear guide 77 lock jack 78 transverse frame 79 stops 80 yawing steady rest jack 81 bracket 90 Hanging metal box S segment W hanging bracket Pa, Pb supply, discharge port Ta, Tb supply, discharge port Ha, Hb hydraulic hose

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Shigeru Tanaka             7-14 Wadamiyadori, Hyogo-ku, Kobe-shi, Hyogo             Issue Nishiryo Engineering Co., Ltd. F-term (reference) 2D055 BA01 BB01 GB03 GB07

Claims (4)

[Claims] 1. An erector device for assembling a lining member in a ring shape on an inner wall surface of an existing tunnel, wherein a swivel ring supported by a support member so as to be swivelable along a tunnel circumferential direction, and the swivel ring in a radial direction of the tunnel. An elevating body that is movably supported along the elevating body, and a holding grip that is attached to the elevating body and that can hold the lining member, the holding grip with respect to the hanging metal fitting screwed into the lining member. A detachable gripping member, an actuator that attaches and detaches the gripping member to and from the hanging fitting, and a rotating device that removes the hanging fitting from the lining member by rotating the gripping member with the gripping member attached to the hanging fitting. An erector device characterized by having. 2. The erector device according to claim 1,
The actuator is a hydraulic jack supported together with the gripping member on a rotary shaft rotated by the rotating device, and hydraulic pressure is supplied to and discharged from the hydraulic jack via a rotary joint wound on the rotary shaft. An elector device characterized by the following. 3. The erector device according to claim 2,
The eclectic device, wherein the rotary shaft is accommodated in a casing that supports the rotary shaft so as to be able to expand and contract, and is constantly urged toward the extension side. 4. A tubular excavator body, a propulsion jack for advancing the excavator body, a cutter head rotatably mounted on the front portion of the excavator body, and a rear portion of the excavator body. In a tunnel excavator equipped with an erector device that is supported and assembles a lining member to an inner wall surface of an existing tunnel, the eclectic device is a swivel ring supported at a rear portion of an excavator body so as to be swivelable along a tunnel circumferential direction. When,
An elevating body that is supported by the swivel ring so as to be movable in the radial direction of the tunnel, and a holding grip that is attached to the elevating body and can hold the lining member, and the holding grip is the lining member. The gripping member that is attachable to and detachable from the hanging metal fitting screwed in, the actuator that attaches and detaches the gripping member to the hanging metal fitting, and the gripping member attached to the hanging metal fitting is rotated to cover the hanging metal fitting. A tunnel excavator, comprising: a rotating device that is detached from a work member.