JP2625297B2 - Tightening device for bolts and nuts for segment fastening - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tightening device for tightening bolts and nuts of a primary lining segment assembled in an excavated tunnel in a shield method.

[0002]

2. Description of the Related Art Conventionally, a segment assembled by an erector device at the rear of a shield machine is used as a reaction force receiver of a propulsion jack of the shield machine.
The bolts and nuts that fasten the segments are loosened due to compression of the sealing material or other vibrations, resulting in incomplete sealing between the segments. As a measure to ensure the water stopping performance of the segment, bolts and nuts were tightened manually using a hand-held nut runner behind the shield machine. However, an automatic bolt / nut tightening device has been proposed in Japanese Unexamined Patent Publication No. Hei 2-38699 because of its low work efficiency.

[0003]

However, in the above conventional tightening device, the tightening device main body is provided on a beam provided at the rear portion of the shield main body. Therefore, immediately after assembling the segments with the erector, the bolts and nuts for tightening must be tightened. After the tightening, loosening progresses due to vibration, etc., and it is necessary to retighten again at the rear. Was. In particular, the effect of looseness is greater in a large-diameter tunnel than in a small-diameter tunnel.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems and to provide a segment tightening bolt / nut tightening device capable of efficiently tightening a segment tightening bolt / nut.

[0005]

In order to solve the above-mentioned problems, the invention according to claim 1 is directed to a segment segment in which a segment piece divided in a circumferential direction and an axial direction of a tunnel is assembled into a cylindrical shape by bolts and nuts. a Zoshime device preparative concluded bolts and nuts, on the assembled running rail laid along the axial direction in the segment, provided movable traveling truck, provided on the traveling carriage A plurality of elevating rails are arranged on both sides of the bogie frame, and forward and backward rails are arranged over front and rear elevating bases that are guided by the elevating rails, and are guided by the forward / backward rails. Arm bases which can be moved by moving the arm bases, and articulated arms each having a tip end movable along the inner peripheral surface of the segment are provided on the arm bases. It is provided with a rose bolts and nuts tightening machine having a bolt chucker and nut runner capable tighten the instrument fastening bolts and nuts. The invention according to claim 2 is a bolt and nut tightening device for a segment fastening in which segment pieces divided in a tunnel circumferential direction and an axial direction are assembled into a cylindrical shape by bolts and nuts. A movable traveling vehicle is provided on a traveling rail laid along the axial direction inside, and an arc-shaped ring rail having the same axis as the segment is arranged on a bogie frame provided on the traveling vehicle, A plurality of pivotable moving bases movable by being guided by the ring rail are arranged, and the pivoting movable bases are provided with articulated arms each having a tip end movable along the inner peripheral surface of the segment. A bolt / nut tightening machine having a nut runner and a bolt chucker capable of tightening a bolt / nut for fastening a segment is provided in a portion. Further, in the invention according to claim 3, the segment pieces divided in the tunnel circumferential direction and the axial direction are bolted to each other.
A tightening device for fastening bolts and nuts for a segment assembled into a cylindrical shape by a nut, wherein the front view has a portal shape on a traveling rail laid along the axial direction in the assembled segment. only <br/> set the traveling vehicle having a bogie frame, vertical to the segment axis on both sides of this carriage frame
With respectively arranged pivotable rotating gantry about an axis oriented laterally on a straight plane, the pivotable rotating gantry and arranged in a vertical axis around the top of the carriage frame, wherein each rotating gantry, the tip The articulated arm is provided with a multi-joint arm that can move along the inner peripheral surface of the segment.
A nut tightener is provided.

[0006]

According to the above configuration, a traveling bogie equipped with a bolt and nut tightener is provided separately from the shield machine.
The retightening work can be performed a predetermined distance behind the shield excavator where the influence of the propulsion reaction force and vibration of the shield excavator is reduced, and the retightening work can be performed more effectively. Also for raising and lowering both sides of the bogie frame of the traveling bogie
Multiple lift bases movably arranged on rails
The table or the ring rail arranged in the circumferential direction can be moved freely
Multiple pivoting gantry or portal frame
Rotating racks located on both sides and top of the car
Add bolts and nuts to the table via articulated arms.
Since the tightening machine is provided, the bolts and nuts for segment fastening mounted at all angles and mounting positions along the circumferential direction
A ring that fastens a wide range and fastens segment pieces divided circumferentially by a single bolt / nut tightening machine into a ring shape, or a ring that fastens a segment ring into a cylindrical shape The bolts and nuts between the bolts can be re-tightened and their ability is high. Further, the articulated arm can cope with segments having different inner diameters and segments of various shapes, and can be easily reused for other tunnel segments after the completion of the retightening work, and the versatility is high.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of a tightening device for a bolt and nut for fastening a segment according to the present invention will be described below with reference to FIGS.

[0008] As shown in FIG.
It is composed of a plurality of segment pieces 2 divided in a circumferential direction, and the segment pieces 2 are fastened by a plurality of inter-piece bolts / nuts 3 to form a ring-shaped segment ring 4. The cylindrical segment 1 fastened by the bolts and nuts 5 and fitted in the tunnel is assembled. In the segment 1, a pair of traveling rails 7 are laid along the axial direction of the segment 1 via a sleeper 6.

As shown in FIGS. 1 to 3, the segment tightening bolt / nut tightening device comprises a self-propelled traveling vehicle 11 movable on the traveling rail 7, the tip of which is the inner periphery of the segment 1. A multi-joint arm 12 movable along the surface is provided, and a bolt chuck having a bolt chucker 13 and a nut runner 14 capable of tightening a bolt-nut 3 between pieces and a bolt-nut 5 between rings is provided at the tip of the multi-joint arm 12. A nut tightener 15 is provided.

The traveling cart 11 has traveling wheels 22 and 23 guided by the traveling rail 7 at the front and rear of a cart frame 21 having a gate-shaped front view, and a traveling motor 24 interlocked with the rear wheels. They are connected to each other to form drive wheels.

The articulated arms 12 are provided on both sides of the bogie frame 21 of the traveling bogie 11 so as to be movable in the vertical direction and the front-rear direction, respectively. That is, a pair of front and rear elevating rails 3 is provided on the side surface of the bogie frame 21.
1 is provided, and an elevating base 32 is arranged on an elevating rail 31 so as to be able to move up and down. An elevating female screw member 35 provided on the elevating base 32 is screwed to an elevating ball screw shaft 34 which is disposed on the bogie frame 21 in parallel with the elevating rail 31 and to which an elevating motor 33 is connected, The lifting base 32 can be moved up and down along the lifting rail 31 by rotating the lifting ball screw shaft 34 by the lifting motor 33.

On the elevating base 32, a pair of upper and lower forward / reverse rails 36 is disposed in the front / rear direction.
6, an arm base 37 for supporting the articulated arm 12 is movably supported. The arm base 3 is mounted on a forward / backward moving ball screw shaft 39 which is disposed on the elevating base 32 in parallel with the forward / backward moving rail 36 and to which a forward / backward moving motor 38 is connected.
7 is screwed with the forward / backward moving female screw member 40. The forward / backward moving motor 38 drives the forward / backward moving ball screw shaft 39 to rotate the arm base 37 along the forward / backward moving rail 36. To move it back and forth.

On the arm base 37, the first arm motor 41 is provided with imaginary lines a to b in the directions of arrows A and B around a first support shaft 42 parallel to the segment axis direction.
The first arm 43 rotatable in the range b is attached,
A second arm motor 44 is provided at the tip of the first arm 43.
Thus, the second arm 46 is attached, which is rotatable around the second support shaft 45 parallel to the first support shaft 42 in the directions of arrows C and D in the range of c to d indicated by the virtual line. Further, a third arm motor 4 is provided at the distal end of the second arm 46.
7, the arm bracket 4 is rotatable in the directions of arrows E and F around a third support shaft 48 parallel to the first support shaft 42.
9 is provided, and a bolt / nut tightener 15 that is rotatable in the directions of arrows G and H by a fourth arm motor 50 around a rotation axis orthogonal to the third support shaft 47 is provided on the arm bracket 49. I have.

The bolt chucker 13 and the nut runner 14 provided on the bolt / nut tightener 15 are attached to the tightener main body 51 so that they can be approached and separated from each other, and the distal end thereof is mounted with the bolt / nut of the segment piece 2. Work arms 52 and 53 which can be inserted into the recesses 8 for use, and chucks which can hold the heads of bolts and nuts at positions opposed to the tips of the work arms 52 and 53, and the nut runner 14 side is a tightener. The inter-piece bolts / nuts 3 and the inter-ring bolts / nuts 5 can be further tightened with a predetermined torque by being rotationally driven by a tightening motor 55 provided on the main body 51 side.

In the above construction, when the tunnel is excavated by the shield machine and the segment 1 is assembled by the erector at the rear part of the shield body with the bolt-nut 3 between pieces and the bolt-nut 5 between the rings, a predetermined distance of the shield machine is obtained. This bolt / nut tightening device is used at the rear, that is, at a position, for example, approximately 20 m behind where the influence of the propulsion reaction force or vibration of the shield machine is small and the bolts and nuts 3 and 5 for segment fastening are not easily loosened.

The traveling vehicle 11 is driven forward by the traveling wheels 23 being rotationally driven by the traveling motor 24, and is stopped at a fixed position where a retightening operation is performed. Next, the elevating motor 33
To move the elevating base 32 to the upper limit, drive the forward / backward moving motor 38 to position the arm base 37, and perform the first to fourth arm motors 41, 44, 4
7 and 50, respectively, to drive the first and second arms 43 and 4 respectively.
6 are rotated, and the tightening operation is started from the bolt-nut 5 between the top rings of the segment 1 as shown by the phantom line on the right side of FIG.

In this tightening operation, the bolt / nut tightening machine 15 is stopped facing the concave portion 6 for mounting the bolt / nut, and the work arms 52, 53 of the bolt chucker 13 and the nut runner 14 are moved in the radial direction of the segment 1. Then, the chucks at the tips are moved to face the bolts and nuts 5 between the rings. Then, the work arms 52 and 53 are brought close to each other, the heads of the bolts and the nuts are gripped by the respective chucks, and the chucks on the nut runner 14 side are rotationally driven by the tightening motor 55 and tightened with an appropriate torque. Then, the chucks are released and the working arms 52 and 53 are opened.
And move on to the next operation.

Next, in order to retighten the bolts and nuts 3 between the adjacent pieces, the main body 51 of the tightener may be turned by the fourth arm motor 50 by 90 degrees. Then, the work is performed by appropriately moving the elevating base 32 and the arm base 37,
One bolt / nut tightener 15 is moved from the top to the bottom, and the other bolt / nut tightener 15 is moved from the bottom to the top, so that the bolts and nuts 3, 3 Re-tighten 5.

Next, a second embodiment will be described with reference to FIG. The same members as in the first embodiment are denoted by the same reference numerals,
Description is omitted.

In this tightening device, a ring rail 61 concentric with the segment 1 is used instead of the lifting rail.
The ring rail 61 is provided with a plurality of (two in the drawing) self-propelled revolving gantry 62, and the revolving gantry 62 is provided with an arm base 37. As a result, the operations of the arms 43 and 46 can be reduced and simplified as compared with the first embodiment, and the lengths of the arms 43 and 46 can be sufficiently reduced.

Next, a third embodiment will be described with reference to FIG. The same members as in the first embodiment are denoted by the same reference numerals,
Description is omitted. Instead of a rail for guiding the arm base, a trolley provided on the traveling trolley 11 and having a gate-shaped front view
On both sides of the frame 21, perpendicular to the axis of the segment 2
Rotate around the horizontal axis in the plane and move back and forth
Each of the rotatable mounts 71 is provided, and
Swivel around the vertical axis at the top of the frame 21 and move it back and forth.
The movable gantry 71 is disposed, and the arm pedestals 37 are provided on the gantry 71, respectively. The articulated arms 12 each having the bolt / nut tightening device 15 are provided. By turning and rotating the rotary base 71 forward and backward, the retightening work range can be covered, and the work time can be shortened by the three bolt / nut tighteners 15.

[0022]

As described above, according to the present invention, since the traveling bogie equipped with the bolt and nut tightener is provided separately from the shield excavator, the influence of the propulsion reaction force and vibration of the shield excavator is provided. The retightening work can be performed behind the shield excavator by a predetermined distance, which reduces the number of pieces, and the retightening work can be performed more effectively. The configuration according to claim 1
Then, the lifting rails provided on both sides of the bogie frame
Through multiple articulated arms to multiple movable lifting bases
A bolt and nut tightener is provided, so it can respond to a wide range and quickly of bolts and nuts for segment fastening mounted at all angles and mounting positions in the circumferential direction. The bolts and nuts between pieces for fastening the segment pieces divided in the circumferential direction in a ring shape and the bolts and nuts between rings for fastening the segment ring in a cylindrical shape can be further tightened, and the ability is high. According to the second aspect of the present invention, the bogie frame is provided.
Multiple swing movements that can move the ring rail provided in
Bolt / nut tightener via a multi-joint arm
Provided, so that the
For a wide range and quickly.
With one bolt and nut tightening machine
The segment pieces divided in the same direction into a ring shape
Piece-to-piece bolts and nuts and segment rings are made cylindrical.
Tighten the bolts and nuts between the rings to be fastened.
The ability is high. Further according to claim 3
According to the configuration, on both sides and the top of the gate-shaped bogie frame
The multi-spindle mounts, each rotatably provided,
Since the bolt and nut tightening machine was provided via the joint arm,
Segment fastening mounted at all angles and mounting positions
Wide range and quick response to bolts and nuts
Can be divided by one bolt and nut tightener in the circumferential direction.
Between the pieces to fasten the segment pieces
And nuts and the ring that fastens the segment ring
Bolts and nuts can be retightened.
The ability is high. Each articulated arm can cope with segments having different inner diameters and segments of various shapes, and can be easily applied to other tunnel segments after the retightening operation, and suitable for reuse.

[Brief description of the drawings]

FIG. 1 is a front sectional view showing a first embodiment of a segment tightening bolt / nut tightening device according to the present invention.

FIG. 2 is a side view of the tightening device.

FIG. 3 is an enlarged front view of the articulated arm of the tightening device.

FIG. 4 is a cutaway perspective view illustrating a segment.

FIG. 5 is a front sectional view showing a second embodiment of the tightening device for bolts and nuts for segment fastening.

FIG. 6 is a front sectional view showing a third embodiment of a tightening device for a segment fastening bolt / nut.

[Explanation of symbols]

 1 segment 2 segment piece 3 bolt and nut between pieces 4 segment ring 5 bolt and nut between rings 7 traveling rail 11 traveling cart 12 articulated arm 13 bolt chucker 14 nut runner 15 bolt and nut tightener 21 bogie frame 22,23 traveling Wheels 24 Running motors 32 Elevating base 34 Ball screw shaft for elevating 37 Arm base 43 First arm 46 Second arm 61 Ring rail 62 Swivel gantry 71 Rotary gantry

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Akihiro Higashide 2-3 Kandajicho, Chiyoda-ku, Tokyo Obayashi Corporation Tokyo head office (72) Inventor Susumu Numura 5-3-1 Nishikujo, Konohana-ku, Osaka-shi, Osaka No. 28 Inside Hitachi Zosen Corporation (72) Inventor Taiji Hanaoka 5-28 Nishikujo, Konohana-ku, Osaka-shi, Osaka Inside Hitachi Zosen Corporation (56) References JP-A-2-38699 (JP, A) JP-A-63-107699 (JP, A)

Claims (3)

(57) [Claims] 1. A Zoshime apparatus tunnel circumferential direction and segments concluded bolts and nuts assembled in a cylindrical shape by bolts and nuts the divided segment pieces in the axial direction, in the assembled segments A movable traveling carriage is provided on a traveling rail laid along the axial direction, and both sides of a carriage frame provided on the traveling carriage are provided.
A plurality of elevating rails are arranged on the surface, and the
Move forward and backward across the front and back elevation bases that are guided and can be raised and lowered
Rails for transfer, guided by the forward / backward travel rails.
A movable arm base is provided for each of these arm bases.
To, respectively tip the articulated arm movable along the segment inner peripheral surface, the distal end of the articulated arm, bolt having a bolt chucker and nut runner capable tightening segments fastening bolts and nuts A tightening device for bolts and nuts for segment fastening, comprising a nut tightening machine. 2. It is divided into a tunnel circumferential direction and an axial center direction.
Assembled segment pieces into a tubular shape with bolts and nuts
Only erected segment fastening bolts and nuts of Zoshime instrumentation
And axially within the assembled segment
A traveling carriage that can be moved on traveling rails laid along
And a seg is attached to the bogie frame provided on this traveling bogie.
And an arc-shaped ring rail coaxial with the
Multiple swinging movements guided by the ring rail
Arrange the gantry, and attach the seg
Each articulated arm that can move along the inner peripheral surface of the
At the end of this joint arm.
Bolt chuck and nut that can tighten
Bolt and nut tightening machine with runner installed
Additional tightening of bolts and nuts for segment fastening
Place. 3. A tightening device for a bolt and nut for fastening a segment piece assembled into a cylindrical shape using bolts and nuts, the segment piece being divided in a tunnel circumferential direction and an axial direction. on the travel rails which are laid along the axial direction, a traveling carriage that viewed from the front has a portal-like carriage frame provided laterally on a plane perpendicular to the segment axis on both sides of the bogie frame of this Direction
As well as arranged a pivotable rotating gantry in Ku axis around the pivotable rotating gantry and arranged in a vertical axis around the top of the carriage frame, wherein each rotating gantry, tip along the segment inner peripheral surface The articulated arm is provided with a bolt chucker and a nut runner having a nut runner and a bolt chucker capable of tightening a segment fastening bolt / nut. For tightening bolts and nuts for segment fastening.