JPH0481040B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention arbitrarily controls the posture of the segments when assembling the segments as the seal excavator advances and completing the lining, thereby making the segment assembly work easier and faster. The present invention relates to a segment assembly device used to perform the segment assembly.

[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. By the way, the segments are previously divided into a plurality of parts so that they can be easily assembled in a narrow tunnel, and the divided arcuate segments are assembled one by one. A shield tunneling machine is generally equipped with a device for assembling the divided pieces of the segment (hereinafter simply referred to as segments) each weighing one ton or more. As schematically shown in FIG. 7, this segment assembly device includes a swing ring b rotatably provided in a shield frame a along its inner circumferential wall, and a swing ring b.
It mainly consists of an arch-shaped suspension beam c provided on a pair of support arms e provided at the rear end so as to be movable in the radial direction, and a segment gripping fork d provided on this suspension beam c. has been done.
The gripping fork d is generally slidable in the axial direction of the shield frame a.

That is, the shield tunneling machine is configured to be able to transport the segment gripped by the gripping fork d to a desired location on the inner circumferential wall of the tunnel by the interlocking operation of the swing ring b and the suspension beam c.

[Problems to be Solved by the Invention] However, in the conventional segment assembly device, even though the segments can be moved in three directions: the circumferential direction, the radial direction, and the axial direction of the shield frame a,
It was not possible to modify the orientation of the segment or to assemble this transported segment into an already assembled segment. Therefore, if the transported segment is diagonal to the already assembled segment, the segment must be manually fine-tuned many times by two or three people, which is time-consuming and time-consuming. Ta. In addition, since assembling the segments by bolting is done manually, it is not only time-consuming, but also requires heavy labor and danger since the work is carried out with heavy objects in narrow tunnels. Ta. These factors also led to a significant increase in tunnel construction costs.

The present invention was devised to solve the various problems mentioned above, and its purpose is to make it possible to arbitrarily control the posture of the segments and to automatically assemble the segments. The purpose of this invention is to make it easier and faster to assemble the tunnels, to reduce the construction cost of the tunnel, and to facilitate the assembly of segments where the tunnel has sharp curves.

[Means for Solving the Problems] The present invention has a swing ring that rotates along the inner circumferential wall of the shield frame support a suspension beam movably in the radial direction of the shield frame, and the shield is attached to the suspension beam. A base balancer that moves in the axial direction of the frame is provided, and an end balancer is provided outside the base balancer via a ball joint, and the end balancer is swung in the axial direction and circumferential direction of the shield frame with the ball joint as a fulcrum. a posture adjusting cylinder for adjusting the posture by moving the cylinder; a gripping member for removably gripping the segment is provided on the outside of the end balancer; and a segment gripping member movable in the axial direction of the shield frame is provided on the swing ring A separate hanging beam with a mechanism is supported movably in the radial direction of the shield frame, and the end balancer is further provided with a bolt fastening device for bolting the segment to the already assembled segment. composition.

[Operation] When the segment is gripped by the segment gripping member provided on the end balancer, the segment can be set at any position by appropriately displacing the hanging beam in the circumferential direction or radial direction of the shield frame. Next, when the end balancer is swung in the axial direction and circumferential direction of the shield frame using the attitude adjustment cylinder, the attitude of the segment is adjusted. Where the tunnel has sharp curves, a separate conventional hanging beam on the swivel wheel is displaced in the circumferential direction of the shield frame to assemble the segments.

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

As shown in FIGS. 1 and 2, an annular turning ring 2 is rotatably provided in a shield frame 1 of a shield tunneling machine along its inner circumferential wall via a support roller 3. A gear 4 concentric with the front end of the swing wheel 2 is attached, and a pinion 5 for driving the gear 4 is meshed with the gear 4. _M1 is a motor equipped with a pinion 5, and is fixed to the shield frame 1 via a bracket 6.

An arch-shaped suspension beam 7 is provided at the rear end of the swing ring 2 along the circumferential direction of the shield frame 1 so as to be movable in the radial direction via a pair of guide rods 8 and a support arm 9. A separate suspension beam 45 is provided on the opposite side so as to be movable in the radial direction, similar to the conventional system. The guide rods 8 are provided at both ends of the hanging beam 7, and
Guide hole 10 of support arm 9 attached to swing wheel 2
are slidably inserted into each. A telescopic cylinder 1 for displacing the suspension beam 7 in the radial direction is hung between each support arm 9 and the suspension beam 7.

The suspension beam 7 is provided with an arch-shaped base balancer 12 that is slightly smaller than the suspension beam 7 and is slidable in the axial direction of the shield frame 1 via a pair of guide bars 13, and the guide bars 13 have a groove-shaped cross section. are attached to the base balancer 12 of the suspension beam 7, and are slidably inserted into slide holes 14 formed in the suspension beam 7, respectively. A sliding cylinder 15 for sliding the base balancer 12 in the axial direction is provided on the suspension beam 7, and an end balancer 17 is provided outside the base balancer 12 via a ball joint 16. That is, the ball joint 16, as shown in FIG.
A shaft 2 having a spherical head 19 horizontally attached to the outer surface of the base balancer 12 via a bracket 18.
0 and a spherical bearing 21 slidably fitted in the spherical head 19, and the spherical bearing 21 is connected to the inner surface of the end balancer 17 formed in an arc shape along the inner surface of the segment s. An end balancer 17 is provided on the outside of the base balancer 12 so as to be swingable by being fixed to the central portion.

The end balancer 17 is swung in the axial direction (swinging in this direction is called pitching) and circumferential direction (swinging in this direction is called rolling) of the shield frame 1 using the ball joint 16 as a fulcrum. In order to adjust the posture of the shield frame 1, a pair of posture adjustment cylinders 22 are installed between the base balancer 12 and the end balancer 17, each spaced a predetermined distance L ₁ from the ball joint 16 to both sides in the circumferential direction of the shield frame 1, and It is placed at a position a predetermined distance L ₂ away from the joint 16 toward the rear of the shield frame 1 in the axial direction, and
The end balancer 17 can be pitched by simultaneously expanding and contracting both posture adjusting cylinders 22, and the end balancer 17 can be rolled by alternately expanding and contracting.

Furthermore, a gripping member 23 for removably gripping the segment s is provided at the center of the outer surface of the end balancer 17. This gripping part 23 consists of a rotary engagement hook in which a T-shaped hook part 25 is formed at the tip of a rotating shaft 24 that projects radially outward from the end balancer 17, and is shown in FIGS. 4 and 5. As shown in FIG. 2, the segment s is engaged by being rotated 90 degrees with respect to the engagement hole 26 formed in the center of the inner surface of the segment s, and disengaged by being rotated 90 degrees.
In order to automate this engagement and disengagement, a motor (not shown) for rotating the rotating shaft 24 is connected to the rotating shaft 24.

The end balancer 17 also has the gripping member 23
In order to reliably support the segment s gripped by the end balancer 17, a support jack 2 protrudes and retracts from the outer surface of the end balancer 17 and presses the inner surface of the segment s.
A suitable number of 7 are provided.

Furthermore, the end balancer 17 includes a segment s and an already assembled segment (existing segment) o.
A suitable number of bolt fastening devices 28 are provided for connecting the bolts to each other.

By the way, as shown in FIG. 4, the segment s has flanges 29 for bolt connection on the peripheral edge and flange holes 30 opened at appropriate intervals in the inner surface of the segment s to form the flanges 29. A bolt hole 31 for inserting a bolt is formed in the flange 29. In addition, in order to simplify the supply of bolts and nuts to each bolt hole 31, a flanged nut 32 is attached to one of the flanges 29a to be connected as shown in FIG. At the same time, a bolt 34 is previously attached to the other flange 29b via a holder 35 made of a leaf spring with its tip facing the bolt hole 31. . In addition,
In this case, it is more convenient in relation to the bolt fastening device 28 to attach the nut 32 to the already assembled flange 29a on the segment o side.

The bolt fastening device 28 has each flange hole 30
is inserted into the nut 3 by engaging the head 34a of the bolt 34 against the spring force of the holder 35.
The bolt engaging arm 36 and the nut 32 are pushed toward the 2nd side.
The bolt engaging arm 36 has a nut engaging arm 37 that engages with and rotates the nut engaging arm 37, and the base end of the bolt engaging arm 36 can freely slide on a guide bar 38a attached to the base end of the nut engaging arm 37. Also, the bolt engaging arm 36 attached to
A guide bar 38b fixed to the base end of the nut engaging arm 37 is connected to a jack 39 attached to the base end of the nut engaging arm 37. It is designed to let you do so. A rotating tool 40 for engaging with the nut 32 and rotating the nut 32 is rotatably provided at the tip of the nut engaging arm 37. As a means for applying rotational force to the rotating tool 40, a rotating tool 40 is rotatably provided. A motor _M2 is attached to the base end of the engaging arm 37, and the motor
A chain 43 is endlessly stretched between the sprocket 42 fixed to the rotating shaft of _M2 , and the rotary tool 40 is rotated by the drive of the motor _M2 .
The bolt fastening device 28 configured in this manner is disposed on the end balancer 17 in accordance with the portion to be bolted. The bolt fastening device 28 is attached by fixing the tip of the guide bar 38a to the end balancer 17 via a jack 44, and the nut rotating tool 40 is moved relative to the nut 32 by the expansion and contraction of the jack 44. It is designed so that it can be engaged and disengaged.

Further, a segment gripping fork 46 is provided on the outside of the central portion of the suspension beam 45, so that segments can be assembled in the same manner as in the conventional segment assembly apparatus.

Now, when assembling the segment s, if the tunnel is a straight part, the end balancer 17 is brought close to the segment s placed with the engagement hole 26 facing upward, and the engagement hook, which is the gripping member 23, is into the engagement hole 26 of the segment s, and turn the engagement hook 90 degrees to bring it into engagement. Next, lift segment s and use support jack 2.
After fixing the inner surface of the segment s by pressing it with the extension action of step 7, this segment s
is transported to a predetermined connection position on the already assembled segment o. These operations involve rotation of the swing wheel 2,
Radial movement of hanging beam 7 and base balancer 12
The segment s is conveyed to a predetermined connection position. The posture or position of the segment s may be deviated at this predetermined connection position. In this case, as shown in FIG. 4, the deviation in the X-axis direction is eliminated by moving the base balancer 12 in the axial direction by the sliding cylinder 15.
The displacement in the Y-axis direction is eliminated by rotation of the turning ring 2, and the displacement in the Z-axis direction is eliminated by moving the suspension beam 7 in the radial direction by the telescopic cylinder 11. Furthermore, rotational deviations around the X-axis are resolved by extending one of the posture adjustment cylinders 22 and retracting the other, and rotational deviations around the Y-axis are resolved by simultaneously operating both posture adjustment cylinders 22. It will be resolved accordingly. Incidentally, the rotational deviation about the Z-axis is eliminated by the segment s rotating about the gripping member 23 when the segment s abuts against the end of the existing segment o. In this way, the attitude of the segment s can be adjusted freely, which facilitates and speeds up the work of assembling the segments.

Once the segment s has been positioned in this manner, the bolt connection work is performed. In this case, since the bolt engaging arm 36 and the nut engaging arm 37 of the bolt fastening device 28 are inserted into the flange hole 30 when positioning the segment s, both jacks 3
9 and 44, the nut rotating tool 40 is engaged with the nut 32 and the bolt engaging arm 36 is engaged with the head 34a of the bolt 34, and in this state, the nut 32 is pushed while pushing the bolt 34 toward the nut 32. Just rotate it. The bolt 34 is pushed through the bolt engagement arm 37 by the retracting action of the jack 44, and the nut 32 is rotated by rotating the nut rotating tool 40 by the motor _M2 . Note that the pushing movement of the bolt 34 may be stopped once the bolt 34 is screwed into the nut 32. In this way, the bolt connection work can be performed safely and quickly without manual intervention, and the segment assembly work can be made even faster and easier.

Next, in sharp curves of the tunnel, it becomes difficult to assemble the segment s using the above-mentioned robot, and manual assembly is required. The segment s is manually assembled using the beam 45 and the segment gripping fork 46 provided on the hanging beam 45.

This makes it easy to perform segment construction on curves, and when a straight section is reached, the lining can be completed by switching to automatic assembly while adjusting the posture.

[Effects of the Invention] As described above, according to the segment assembly device of the present invention, the following excellent effects can be achieved.

(i) A base balancer is provided on the suspension beam so as to be movable in the width direction, and an end balancer serving as a holding base for the segment is provided on this base balancer via a ball joint, and this end balancer is connected to the ball joint by an attitude adjustment cylinder. Since the fulcrum is swing-adjusted in the circumferential and axial directions, the posture of the segment can be arbitrarily controlled via the end balancer, which facilitates and speeds up segment assembly work and reduces tunnel construction costs. It is possible to reduce the

(ii) In addition to the above configuration, a bolt fastening device is provided on the end balancer, so the segment assembly can be performed automatically and mechanically while controlling the orientation of the segment as desired. can be made easier and faster, and
It is possible to reduce labor and increase safety.

(iii) With such a configuration, segment assembly control can be automated by providing a position detector for the existing segment.

(iv) When the tunnel changes from a straight section to a sharp curve, segment construction at the curved section can be done using hand-assembled hanging beams, so it is easier to assemble segments at the curved section than at the straight section. Can be done continuously with segment assembly,
Segments can be assembled efficiently.

[Brief explanation of drawings]

FIG. 1 is a rear view showing an embodiment of the segment assembly device of the present invention, FIG. 2 is a sectional view taken from FIG. 1,
FIG. 3 is an enlarged sectional view of a ball joint in the device of the present invention, FIG. 4 is a perspective view of a segment assembled with the device of the present invention, and FIG. 5 shows the relationship between the engagement hole formed in the segment and the gripping member. The figure shown in FIG. 6 is a side view of a bolt connection device that connects segments,
FIG. 7 is a diagram of a conventional segment assembly device. 1 is a shield frame, 2 is a turning ring, 7 is a hanging beam, 11 is a telescopic cylinder, 12 is a base balancer, 13 is a guide bar, 15 is a sliding cylinder, 1
6 is a ball joint, 17 is an end balancer, 22 is a posture adjustment cylinder, 23 is a gripping member, 26 is an engagement hole, 2
8 is a bolt fastening device, 32 is a nut with a flange,
34 is a bolt, 36 is a bolt engaging arm, 37 is a nut engaging arm, 38a, 38b are guide bars, 45 is a hanging beam, and s is a segment.

Claims (1)

[Scope of Claims] 1. A hanging beam is supported by a swing ring that rotates along the inner circumferential wall of the shield frame so as to be movable in the radial direction of the shield frame, and the hanging beam is moved in the axial direction of the shield frame. A base balancer is provided, and an end balancer is provided outside the base balancer via a ball joint, and the end balancer is swung in the axial direction and circumferential direction of the shield frame using the ball joint as a fulcrum to adjust its posture. and a gripping member for removably gripping the segment is provided on the outside of the end balancer,
A segment assembly device characterized in that the swing ring supports a separate suspension beam having a segment gripping mechanism movable in the axial direction of the shield frame so as to be movable in the radial direction of the shield frame. 2. A hanging beam is supported on a swing ring that rotates along the inner circumferential wall of the shield frame so as to be movable in the radial direction of the shield frame, and a base balancer that moves in the axial direction of the shield frame is provided on the hanging beam. An end balancer is provided outside the base balancer via a ball joint, and a posture adjustment cylinder is provided for adjusting the posture by swinging the end balancer in the axial direction and circumferential direction of the shield frame using the ball joint as a fulcrum. a gripping member for removably gripping the segment is provided on the outside of the end balancer, and a bolt fastening member for bolting the segment to an already assembled segment;
A segment assembly device characterized in that the swing ring supports a separate hanging beam having a segment gripping mechanism movable in the axial direction of the shield frame so as to be movable in the radial direction of the shield frame.