JPH1082296A - Additional tightening device of bolt-nut for clamping segment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To conduct the lower works of a working floor member quickly and easily by moving a travelling truck on the underside of a tunnel and a rotary arm and automatically assembling bolts and nuts for a segment piece by a bolt-nut additional tightening machine. SOLUTION: A lower additional tightening device 50 consists of a travelling truck 51 travelling on the underside of a tunnel 1 in the longitudinal direction of the tunnel 1, a sliding base 53 freely moved in a vertical surface, and a rotary arm 55 freely rotated around a horizontal longitudinal-shaft member 54. A bolt-nut additional tightening machine 62 with a bolt chucker 60 and a nut runner 61 is installed at the front end section of the rotary arm 5 through an articulated mechanism 57. Accordingly additional tightening works are performed automatically even in the lower section of a working floor section 3 in mutual segment pieces 4B by mounting the lower additional tightening device tightening the bolts and the nuts to the lower section of the working floor section 3 set up into the tunnel.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bolt and nut tightening device for assembling segment pieces in a tunnel excavated by, for example, a shield method.

[0002]

2. Description of the Related Art FIG. 3 shows a conventional apparatus for tightening bolts and nuts for fastening segments. This is the work floor 10 attached to the lower part of the tunnel 100 excavated by the shield method.
The self-propelled bogies 103 are mounted on a pair of track rails 102 laid on the floor 101 so as to be able to travel freely, and the self-propelled bogies 103 are erected on these self-propelled bogies 103 in an inclined manner. A guide frame 104, a connecting frame 105 for connecting the guide frames 104, a manipulator 108 having an articulated arm 107 attached to an elevating device 106 provided on each guide frame 104, and each of these manipulators. And a bolt / nut tightening device 110 attached to the arm portion 107 of the vehicle.

According to this configuration, the self-propelled carriage 103 is driven to sequentially move in the front-rear direction of the tunnel 100,
By driving the manipulator 108 up and down by driving 106 and by driving the arm / nut 107 to position and drive the bolt / nut tightener 110 at a predetermined position, the bolt chucker of the bolt / nut tightener 110 and Insert the nut runner into the bolt / nut fastening recess 112
The nut 111 is fastened to tighten the segment pieces 113 together.

[0004]

The conventional tightening device for a bolt and nut for fastening a segment is installed on a work floor 101 attached to a lower portion of the tunnel 100. Upper segment piece 113
Even if you can assemble (retighten) each other, work floor
The lower segment pieces 113 at 101 cannot be assembled.

Accordingly, the segment piece 113 of this portion
The assembly between the two pieces was difficult because the retightening of the lower segment piece 113 had to be performed manually.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a tightening device for a bolt and nut for fastening a segment, which can solve the above-mentioned problems.

[0007]

Means for solving the problems of the present invention include a traveling vehicle that can travel on the lower surface of the tunnel along the axial direction of the tunnel, and a traveling mechanism that slides on the traveling vehicle. A slide member movably mounted in a vertical plane, a rotation arm having a base end rotatably mounted on the slide member about a horizontal shaft member, and a multi-joint mechanism at a distal end of the rotation arm And a bolt and nut tightener attached via the trolley.The traveling truck is moved on the lower surface at any time in the axial direction of the tunnel, and the turning arm is turned to rotate the bolt / nut tightener. Tighten the bolts and nuts of the segment pieces divided in the tunnel circumferential direction and axial direction.

Further, the rotating arm is expanded or contracted according to the diameter of the tunnel or replaced, and the bolt and nut of the segment piece are tightened by the bolt and nut tightening machine.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. In the embodiment according to the present invention, a work floor 3 is constituted by a plurality of pillows 2 arranged at predetermined intervals in the front-rear direction A of the tunnel 1 on the lower side of the tunnel 1. Is used to carry out construction work on the tunnel 1 by, for example, transporting the segment piece 4A to a predetermined place, and for transporting the construction material transport trolley 5 at a predetermined interval in the center thereof in the left-right direction. Are disposed.

Two pairs of traveling rails 8 are disposed at right and left positions with the transporting rail 6 interposed therebetween.
The upper tightening device 7 is supported so as to be able to run freely. The upper tightening device 7 tightens the bolts and nuts 10 on the segment pieces 4A assembled by bolts and nuts 10 by an erector at the rear part of the shield main body (not shown), so that the upper part is higher than the work floor 3. Are fixed to each other.

The upper tightening device 7 includes a plurality of running rails 8.
A traveling body 11 movably provided on the vehicle, and the traveling body 11
, An arc-shaped guide frame 13 attached to the operation unit 12, and a plurality of traveling bases 1 movably attached to the guide frame 13.
4, a mounting arm 15 mounted on each of the traveling bases 14, an articulated arm 16 mounted on each of the mounting arms 15, and a bolt and nut tightener 17 mounted on each of the articulated arms 16. It is composed of

The traveling body 11 has a pair of right and left traveling platforms 20 each having driving wheels 18 (two pairs of front, rear, left and right) rolling on each traveling rail 8 and driving these driving wheels 18. (Not shown), a rail clamp 21 for clamping each traveling rail 8 on the left and right, and a handrail 22 disposed between the traveling tables 20.
And a check deck 25 having a passage portion 24.

The operating section 12 is disposed between the traveling cradle 20 and has a gate-shaped operating section main body 26 having a driver's seat (not shown) at an upper portion and a pair of front and rear operating sections. And a plurality of connecting plates 32 for connecting the operating unit main body 26 and the installing unit 31 in the front-back direction A.

The guide frame 13 is disposed between the operation section 12 and the installation section 31 and is formed concentrically with the tunnel 1. The outer rack-shaped tooth section 33 is disposed inside the tooth section 33. It comprises a pair of guide rails 34 in an arc shape, and an arc-shaped mounting plate 35 disposed on the inner diameter side of the guide rails 34. The mounting plate 35 is mounted in the middle of the connecting plate 32 of the operating unit 12. It is gripped back and forth by the gripping member 36 and is configured integrally with the driving unit 12.

Each of the traveling bases 14 is provided with a guide frame 13.
A holding member 37 for holding the guide rail 34 and a drive motor 40 having a drive pinion 38 for meshing with the teeth 33 are provided, and each of the mounting arms 15 is The base end of a gripping cylinder member 41 attached to the front surface of the traveling base 14 is arranged in the radial direction of the tunnel 1 by a cylinder device.

The articulated arms 16 which can be bent by driving a bending motor 43 via an arm base 42 are mounted on the distal end of the mounting arm 15. Each of the bolt and nut tighteners 17 is provided with an articulated arm 16.
Attached to the tip of the segment piece 4A
A bolt chucker 45 and a nut runner 46 which are inserted into the mounting recesses 44A.

According to this configuration, by driving the traveling drive motor, the entire apparatus can travel in the front-rear direction A of the tunnel 1. Each traveling rail 8 is clamped by the rail clamp 21 and the traveling body 11 Perform the tightening work while the is securely fixed.

The tightening operation of the upper tightening device 7 includes:
After moving the traveling body 11 to the position to be worked and fixing it, the bolt chucker 45 and the nut runner 46 of the bolt / nut tightener 17 are inserted into the opposed mounting recesses 44A and stopped, respectively. The segment pieces 4A arranged in the front-rear direction A and the circumferential direction of the tunnel 1 are fixed by holding the bolt with the chucker 45 and rotating the nut with the nut runner 46.

The bolt / nut 10 at a predetermined position
When the bolt / nut tightening machine 17 is moved in the circumferential direction of the tunnel to tighten another bolt / nut 10 after tightening, the drive motor 40 is driven to rotate the drive pinion 38. Then, since the traveling base 14 moves along the guide rail 34, when the traveling base 14 moves to a predetermined position, the driving of the drive motor 40 is stopped, and the bolt chucker 45 and the nut runner 46 are moved to the target mounting recesses 44A. And tighten the bolts and nuts 10.

In this way, the traveling base 14 is sequentially moved in the circumferential direction of the tunnel, and when the retightening operation at a predetermined cross section is completed, the traveling drive motor is driven to move the entire apparatus in the forward direction of the tunnel 1. Then, the segment pieces 4A in the next cross section are fixed in the same manner as described above.

In the embodiment of the present invention, bolts and bolts are attached to the segment piece 4B below the work floor 3.
A lower tightening device 50 for tightening the nut 10 is provided.

As shown in FIG. 1, the lower tightening device 50 includes a pair of front and rear traveling vehicles 51 that can travel on the lower surface of the tunnel 1 along the front and rear direction of the tunnel 1 and between the traveling vehicles 51. A slide base 53 movably mounted in a vertical plane via a slide mechanism 52, a rotation arm 55 having a base end rotatably mounted on the slide base 53 about a horizontal front and rear shaft member 54, A bolt chucker 60 and a nut runner 61 which are attached to the distal end of the rotating arm 55 via a multi-joint mechanism 57 which can be bent by driving a bending motor 56 and which are inserted into the mounting recesses 44B formed in the segment piece 4B. And a bolt / nut tightening device 62.

Each of the traveling vehicles 51 has two pairs of front and rear driving wheels 63 which roll directly in contact with the segment piece 4B, a pair of front and rear steering wheels 64 arranged on the central rear surface, and an outrigger. The traveling carts 51 are connected to each other by connecting plates 66 extending in the front-rear direction at left and right ends.

Each driving wheel 63 has a predetermined inclination along the lower part of the tunnel 1. The slide mechanism 52 includes leg members 67 erected on both sides on the rear upper surface of the front traveling vehicle 51 and on both sides on the front upper surface of the traveling vehicle 51 on the rear side.
A slide rail 68 fixed between the upper portions of the leg members 67 of the traveling carriages 51;
8, a sliding rod 71 (horizontal front-rear axis) slidable left and right in the front-rear direction between the long sliding grooves 70 in the left-right direction.
The slide rod 71 is attached to the slide holder 1 via a slide table 53 and is configured to be extendable and retractable by a cylinder device. The slide rod 71 is configured to move in the left-right direction by a rack and pinion mechanism (not shown).

A rotation drive motor 72 for rotating the slide rod 71 about its axis is provided by each traveling carriage 5.
These rotation drive motors 72 are mounted on a horizontal rail member 73 on the traveling carriage 51 via a sliding member 74 so as to be slidable.

In the lower tightening device 50 constructed as described above, the driving device 63 is driven to drive the entire device into the tunnel 1.
To stop at a predetermined place. Then, the outrigger 65 is driven to fix the traveling carriage 51 to the place. Subsequently, when the rack and pinion mechanism is driven, the slide table 53 slides in the slide long groove 70 in the left-right direction, so that the bolt / nut tightener 62 is brought closer to the target mounting recess 44B.

When the rotation drive motor 72 is driven, the slide rod 71 rotates about its axis, and the rotation arm 55 follows the rotation of the slide rod 71. 55 is expanded and contracted in accordance with the inner diameter of the tunnel 1, and the bending motor 56 is driven to insert the bolt chucker 60 and the nut runner 61 of the bolt and nut tightener 62 into the intended mounting recess 44 </ b> B. Tighten the nut 10.

When the tightening work on the predetermined cross section is completed in this manner, the drive wheels 63 are driven to move the entire apparatus in the forward direction of the tunnel 1 and, similarly to the above, beneath the work floor 3. Segment piece 4 in the next section
B are sequentially fixed.

As described above, according to the embodiment of the present invention,
Bolts and nuts 10 for fixing the segment pieces 4B to each other below the work floor 3 installed in the tunnel 1
Since the lower tightening device 50 for tightening the work floor is provided,
Can be automatically tightened below the work floor 3 in parallel with the upper tightening device for tightening the bolts and nuts 10 for fixing the segment pieces 4B above each other,
Therefore, the tightening operation can be performed quickly and easily.

According to the lower tightening device 50 as described above, the tightening work of the segment pieces 4B is performed below the work floor 3 irrespective of the work above the work floor 3. The additional tightening work can be performed without being affected by the work above the floor 3.

In the above embodiment, the rotating arm 55
Is configured to be expandable and contractible so as to correspond to the inner diameter of the tunnel 1. However, it is also possible to correspond to the tunnel 1 having a different inner diameter by replacing the rotating arm 55.

[0032]

As is apparent from the above description, according to the present invention, the segment pieces divided in the circumferential direction and the axial direction of the tunnel are bolted below the work floor member for performing the construction work on the tunnel. Since the tightening device for assembling with the nut is provided, the segment piece below the work floor member can be automatically assembled without manual operation as in the related art, thus reducing the burden on the operator. In addition, the time required for the tightening operation can be shortened, and the operation can be performed quickly and easily.

Further, by configuring the rotating arm so as to be extendable or replaceable so as to be compatible with tunnels having different inner diameters, it is possible to achieve versatility and improve economy.

[Brief description of the drawings]

FIG. 1 is a front view showing the overall configuration of a tightening device according to an embodiment of the present invention.

FIG. 2 is a side view of the same.

FIG. 3 is a front view showing the entire configuration of a conventional tightening device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tunnel 4A Segment piece 7 Upper tightening device 8 Running rail 10 Bolt / nut 11 Running body 13 Guide frame 14 Running base 17 Bolt / nut tightening machine 21 Rail clamp 34 Guide rail 38 Drive pinion 40 Drive motor 44A Mounting recess 44B Mounting recess 45 Bolt chucker 46 Nut runner 50 Lower tightening device 51 Traveling trolley 53 Slide table 55 Rotating arm 56 Bending motor 60 Bolt chucker 61 Nut runner 62 Bolt / nut tightener 63 Drive wheel 65 Outrigger 70 For slide Long groove 71 Slide rod 72 Rotating drive motor A Front and back direction of tunnel

Claims (2)

[Claims] 1. A tightening device which is disposed below a work floor member for performing a construction work on a tunnel and assembles a segment piece divided in a circumferential direction and an axial direction with a bolt and a nut. A traveling vehicle that can travel on the lower surface of the tunnel along the axial direction of the tunnel, a slide member movably mounted on the traveling vehicle in a vertical plane via a slide mechanism, and a horizontal It is characterized by comprising a rotating arm whose base end is rotatably mounted around a shaft member, and a bolt and nut fastening machine mounted via a multi-joint mechanism to a distal end of the rotating arm. Tightening device for bolts and nuts for segment fastening. 2. The tightening device for bolts and nuts for segment fastening according to claim 1, wherein the rotating arm is attached to the slide member so as to be able to expand and contract or to be exchangeable.