JPH0349357B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to an automatic segment assembly device used to assemble segments and complete a lining as a shield excavator advances, and particularly relates to an automatic segment assembly device used to assemble segments as a shield excavator advances and complete a lining. The present invention relates to an automatic segment assembly device that can be used to assemble segments.

[Prior Art] Segments are assembled on the inner circumferential wall of a tunnel excavated by a shield tunneling machine for water stoppage and reinforcement purposes. The segments are pre-divided into a plurality of parts so that they can be easily assembled inside a narrow tunnel, and the divided arcuate segments are assembled one by one.

Conventionally, a segment assembly device has been used to assemble such divided segments, but it is mainly intended for assembling segments in the straight part of a sinus tract, and its configuration is such that the device is rotatably supported within a shield frame. A hanging beam is supported on the slewing ring so as to be able to reciprocate in the radial direction of the tunnel, and the hanging beam can grip the segment and transport it to a desired location on the inner wall of the excavated tunnel for assembly. be.

[Problems to be Solved by the Invention] However, the above-mentioned conventional segment assembly apparatus is suitable for handling segments of the same shape constructed in a straight section of a tunnel, and is suitable for handling segments attached to a hanging beam. The gripping device does not have a mechanism that can deal with changes in the position of the engaging part provided on segments of the same shape, and it is difficult to properly assemble irregularly shaped segments that are installed in curved parts of tunnels. I couldn't do it.

Therefore, the present invention aims to make it possible to position and easily hold irregularly shaped segments that can be attached not only to straight parts of a sinus but also to curved parts, and to automatically assemble segments in curved parts. It is something to do.

[Means for resolving the problems] The present invention has a support member movably supported in a radial direction of the shield frame by a swing ring provided in the shield frame, and a support member provided on the shield frame side of the support member. A segment gripping mechanism is provided, and a position adjustment device is provided for adjusting the position of the segment supplied to the shield frame side of the gripping mechanism, and the end face of the segment is aligned with the end face of the existing segment on the shield frame side of the support member. The structure is equipped with a bolt tightening machine that performs bolt tightening.

[Operation] When the segment is supplied to the shield frame side of the supporting member, the supply is stopped when the end face of the segment reaches the center of the bolt fastening machine, and then, after positioning the segment with the segment positioning device, The segment is gripped by the gripping mechanism. After that, transport the segment to the designated location,
adjacent to an already assembled segment;
Bolt the segments together using a bolt tightening machine,
Assemble the segments. In the present invention, since a segment position adjustment device is provided, even irregularly shaped segments can be easily positioned, and the present invention is particularly effective in assembling segments into curved portions of sinus passages.

[Example] Hereinafter, an example of the present invention will be described with reference to the drawings.

FIGS. 1 and 2 show an embodiment of the present invention, in which an annular swing ring 2 is provided in a cylindrical shield frame 1 of a shield tunneling machine in a circumferential direction via a support roller 3. A support arm 4 is provided protruding inside the turning ring 2, and the support arm 4 supports a substantially arc-shaped suspension beam 6 as a support member via a telescoping cylinder 5 so as to be movable in the radial direction. In this embodiment, the radial movement of the suspension beam 6 is guided by a guide rod 7 slidably inserted through the support arm 4. , a gripping device 9 for the segment 8, a position adjustment device 18, and a bolt fastening machine 22.

As specifically shown in FIG. 2, the gripping device 9 comprises a hook bar 11 having a T-shaped locking portion 10 (see FIG. 3) at its tip, and the locking portion 10 is shown in FIG. By inserting the locking portion 10 into a hook hole 12 formed at the center of the inner surface of the segment 8 and rotating it, the locking portion 10 engages with the hook hole 12 and the segment 8 can be gripped. Further, as a means for inserting and removing the hook rod 11 into and from the hook hole 12 of the segment 8 and rotating it, a gripping cylinder 1 for insertion and removal is provided at the base end of the hook rod 11.
3, and a gripping/rotating cylinder 15 is connected to a lever 14 provided on the hook rod 11 via a spline so as to be slidable in the axial direction.

The segment 8 is supplied from the rear in the sinus direction with the inner surface facing down to the gripping device 9 of the hanging beam 6 positioned above, and the supplied segment 8 is Gripping device 9
For upward guidance, a guide roller 16 is attached via a bracket 17 to the outer side of the suspension beam 6. A plurality of guide rollers 6 are arranged in the circumferential direction and in the tunnel direction so as to receive the inner surface of the segment 8 and guide it in a stable state.

The position adjusting device 18 for the segment 8 is configured to adjust the position of the segment 8 guided by the guide roller 16.
It consists of a cylinder 20 horizontally attached to the outside of the hanging beam 6 via a bracket 19, and a stopper 21 attached to the tip of the rod of the cylinder 20. Stop at 21,
The segment 8 can be displaced by the expansion and contraction operation of the cylinder 20.

Further, as partially shown in FIG. 3, the bolt fastening machine 22 attaches a bolt connecting flange 23 provided at the peripheral edge of the segment 8 to an opening in the inner surface of the segment 8 to form this flange 23. This is for bolting to the flange of an adjacent segment using the flange hole 24, and is attached to the outside rear end side of the suspension beam 6. As shown in FIG. 4, bolt holes 25 for inserting bolts are formed in the flange 23, and in order to simplify the supply of bolts and nuts to each bolt hole 25, one of the flanges 23a The flanged nut 26 connects its flange portion 26a to the base 2.
7 and is rotatably attached to the other flange 23b, and a bolt 28 is attached in advance to the other flange 23b via a holder 29 made of a plate spring with its tip facing the bolt hole 25. There is. In this case, the already assembled segment 0
It is more convenient in relation to the bolt fastening machine 22 to attach the nut 26 to the side flange 23a.

The bolt fastening machine 22 is inserted into each flange hole 24 of the adjacent segment 8 and the bolt 22 is inserted into each flange hole 24 of the adjacent segment 8.
The bolt 28 is engaged with the head 28a of the holder 2.
It has a bolt engaging arm 30 that pushes toward the nut 26 against the spring force of 9, and a nut engaging arm 31 that engages with the nut 26 and rotates the nut. The base end of the bolt engagement arm 30 is slidably mounted on a guide bar 32a erected at the base end. Further, a jack 33 for moving the bolt engaging arm 30 toward and away from the base end of the nut engaging arm 31 is connected to the base end, and a guide bar 32b connected to the jack 33 is connected to the base end of the nut engaging arm 31. It passes through the nut engaging arm 31 and is fixed to the base end of the bolt engaging arm 30. Nut engaging arm 3
A rotating tool 34 that engages with and rotates the nut 26 is rotatably provided at the tip of the nut 26. As means for applying rotational force to the rotating tool 34, a motor _M2 is attached to the base end of the nut engaging arm 31, a sprocket 35 fixed to the output shaft of the motor M, and a sprocket 36 fixed to the rotating tool 34.
A chain 37 is hung between. In this bolt fastening machine 22, a jack 38 connected to a guide bar 32a is attached to the outside of the hanging beam 6.

In addition, as a device for automatically supplying the segments 8, as shown in FIG.
A pusher 39 is disposed at the rear upper part of the tunnel and supplies the segment 8 onto the hanging beam 6 which is positioned above the tunnel and waits for the segment 8.
9 and a lifter 42 that lifts the segments 8 transported by a truck 41 to the conveyor 40.

When assembling the segments 8, first, the swing wheel 2 is rotated so that the suspension beam 6 is positioned upward, and the suspension beam 6 is positioned upward. At this time, the gripping cylinder 13 is retracted so that the hook bar 11 of the gripping device 9 does not interfere with the segment 8 .

By the pusher 39 of the segment supply device,
When the segment 8 that has been conveyed is pushed out above the suspension beam 6, the segment 8 is supported by the guide roller 16 and positioned on the suspension beam 6, and the stopper provided at the tip of the cylinder 20 of the position adjustment device 18 At 21 the segment 8 is positioned. At this time, in the straight part of the tunnel, the shapes of the segments 8 are the same, and each segment 8
Since the position of the hook hole 12 is also constant, the hook hole 1
By positioning the stopper 21 to stop the segment 8 at a position such that the segment 8 corresponds to the hook bar 11 of the gripping device 9, the segment 8 is
Segment 8 hits the stopper 21.
This means that the positioning has been performed. Therefore,
When the segment 8 is positioned against the stopper 21, the insertion/removal holding cylinder 13 is extended and the locking portion 10 at the tip of the hook rod 11 is inserted into the hook hole 12 of the segment 8. Next, the hook bar 11 is rotated 90 degrees via the grip rotation cylinder 15 and the lever 14, and the locking portion 10 is engaged with the hook bar 12. Thereafter, the insertion/removal gripping cylinder 13 is operated to shorten the length, and the segment 8 is strongly pressed against the guide roller 16, thereby completing the gripping of the segment. When gripping is completed, the swing ring 2 is rotated and the suspension beam 6 is moved in the radial direction to set the segment 8 on the inner wall of the sinus in the straight section. When the setting is completed, bolts are automatically tightened between the flanges of the segments 8 that have already been attached using a bolt tightening machine 22 shown in FIG.

In the curved portion of the tunnel, the segment 8 is deformed to match the curve shown in FIG. 5, so when handling such an irregularly shaped segment 8, a position adjustment operation is performed each time. First, when the irregularly shaped segment 8 is fed by the automatic feeding device, the segment 8 is fed by the pusher 39 until the rear end surface of the segment comes to the center of the bolt tightening machine 22. When the end face of the segment is fed until it reaches the center of the bolt fastening machine 22 as described above, a proximity switch or the like attached to the bracket 17 or the like detects the pusher 39 and the pusher 39 is moved.
9 stops. Next, the cylinder 20 of the position adjustment device 18 is actuated to move the stopper 21 forward to clamp the irregularly shaped segment 8 between the stopper 21 and the pusher 39, and then the irregularly shaped segment 8 is gripped by the gripping device 9, It is carried to the assembly location and bolted using the bolt fastening machine 22.

6 and 7 show another embodiment of the present invention, in which a balancer functioning as a support member is attached to a hanging beam 6 as a support member, and a gripping device 9, a position adjustment device 18, and a bolt are attached to the outside of the balancer. It is equipped with a fastening machine 22. That is, an arch-shaped base balancer 43 that is slightly smaller than the hanging beam 6 is attached to the hanging beam 6 supported by the swing ring 2 so as to be movable in the radial direction of the shield frame 1 through a pair of guide bars 44. frame 1
The base balancer 4 is provided so as to be slidable in the axial direction of the base balancer 4.
An end balancer 4 is connected to the outside of 3 via a ball joint 47.
8 is attached to the shield frame 1 so as to be swingable in the axial and circumferential directions. The guide bar 44 is
It is attached to a base balancer 43 having a groove-shaped cross section, and is slidably inserted into each slide hole 45 formed in the suspension beam 6. Also, on the suspension beam 6, the base balancer 43 is slidably inserted in the axial direction. A sliding cylinder 46 is provided for this purpose. Between the base balancer 43 and the end balancer 48, the end balancer 48 is used as a fulcrum for the shield frame 1 in the axial direction (swinging in this direction is called pitching) and in the circumferential direction (swinging in this direction is called pitching). The end balancer 48
In order to adjust the posture of the shield frame 1, a pair of posture adjustment cylinders 49 are spaced a predetermined distance m from the ball joint 47 to both sides of the shield frame 1 in the circumferential direction and a predetermined distance n to the rear of the shield frame 1 from the ball joint 47 in the axial direction. They are placed in separate locations and hung over each other.
Therefore, when both posture adjustment cylinders 49 are expanded and contracted at the same time, the end balancer 48 can be pitted, and when they are expanded and contracted alternately, the end balancer 48 can be pitched.
You can roll an 8.

In this embodiment, the swingable end balancer 48 is equipped with the segment gripping device 9 provided on the hanging beam 6 in the embodiment shown in FIGS. 1 to 5, the position adjustment device 18, and the bolts. The configuration includes a fastening machine 22.

The segment gripping device 9 is connected to the end balancer 4.
It consists of a rotating shaft 50 projecting radially from the segment 8 and a T-shaped locking part 10 provided at its tip, and is inserted into a hook hole 12 formed in the center of the inner surface of the segment 8 as shown in FIG. The locking portion 10 is engaged by rotating the rotary shaft 50 by 90° using a motor (not shown), and can be disengaged by rotating the rotating shaft 50 by 90°.

Moreover, the position adjustment device 18 of the segment 8
The structure is the same as that in the embodiment shown in the figure, and the same components are given the same reference numerals.
Similarly, the bolt fastening machine 22 has the same configuration as that described in the above embodiment, and 51 is a bolt engaging arm;
Numeral 52 is a nut engaging arm, which corresponds to the symbols 30 and 31 in the above embodiment. In FIG. 7, 53 is a gear attached to the front end of the turning wheel 2, 54 is a pinion that drives the gear 53, and _M1 is a motor.

In this embodiment as well, the segment 8 is moved to the position adjusting device 1.
After positioning with 8, segment 8 is held with gripping device 9.
, and then turning the turning wheel 2 to move the segment 8 to a predetermined assembly position is the same as in the embodiment shown in FIGS. 1 and 2, but in the embodiment shown in FIGS. In the embodiment shown in FIG. 7, the posture and position of the segment 8 after being gripped by the gripping device 9 can be controlled as desired. That is, the balancer 43 can move in the axial direction of the shield frame 1 with respect to the hanging beam 6, and the balancer 48 can perform pitching and rolling with respect to the balancer 43, so the posture of the segment 8 can be freely adjusted. Even in cases where the segment cannot be properly set simply by moving the segment 8 in the radial direction, there is an advantage that the segment assembly work can be performed easily and quickly.

[Effects of the Invention] As described above, according to the device of the present invention, in addition to the segment gripping device, the support member that can rotate in the circumferential direction of the sinus tract and move in the radial direction is provided with a segment gripping device. A position adjustment device and a bolt fastening machine are attached so that the segments supplied to the shield frame side of the supporting member can be positioned with respect to the gripping device and the bolt fastening machine, so that the irregularly shaped segments used for the curved part of the tunnel can be positioned. It can be properly set to existing segments, bolted automatically, and segments can be automatically assembled at curved sections.

[Brief explanation of drawings]

Fig. 1 is a rear view showing one embodiment of the device of the present invention, Fig. 2 is a sectional view showing a state in which a segment is being gripped supplied from a segment supply device, and Fig. 3 is a part of the inner surface of the segment. 4 is a partial sectional view showing an example of a bolt fastening machine, FIG. 5 is an explanatory view showing a segment of a tunnel curve, and FIG.
The figure is a rear view showing another embodiment of the present invention, and FIG. 7 is a view taken along the - arrow in FIG. 6. 1 is a shield frame, 2 is a turning wheel, 6 is a hanging beam, 8 is a segment, 9 is a gripping device, 16 is a guide roller, 18 is a position adjustment device, 20 is a cylinder, 21 is a stopper, 22 is a bolt fastening machine, 43
indicates a base balancer, and 44 indicates an end balancer.

Claims (1)

[Claims] 1. A support member is movably supported in the radial direction of the shield frame by a swing ring provided in the shield frame, and a segment gripping mechanism is provided on the shield frame side of the support member,
A position adjustment device is provided for adjusting the position of the segment supplied to the shield frame side of the gripping mechanism,
An automatic segment assembly apparatus characterized in that a bolt fastening machine is provided on the shield frame side of the support member for bolting an end face of a segment to an end face of an existing segment.