JPS60261897A - Shield drilling machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a shield tunneling machine, and more particularly to a shield tunneling machine in which the posture of the segments can be arbitrarily controlled, thereby facilitating and speeding up the assembly work of the segments.

Segments are assembled on the inner circumferential wall of the tunnel excavated by the shield tunneling machine for water-stopping 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. The shield tunneling machine is generally equipped with a device for assembling the divided pieces of the segment (hereinafter simply referred to as segments), which weigh more than one ton.

As shown in Fig. 1, this segment assembly device consists of an erector b rotatably mounted on a shield frame, a hanging beam C provided on the erector b so as to be movable in the radial direction, and It mainly consists of a segment gripping mechanism d provided on a hanging beam C. This gripping mechanism d is generally capable of sliding in the axial direction of the shield frame a. □That is, the shield excavator is capable of transporting the segment gripped by the gripping mechanism d to a desired location on the inner peripheral wall of the tunnel by the interlocking operation of the erector b and the hanging beam C.

However, in conventional shield tunneling machines, even if the segments can be moved in the three directions of the circumferential direction, radial direction, and axial direction of the shield frame a, the posture of the segments is corrected 1c, or the transported segments are It could not be assembled into already assembled segments. Therefore, if the transported segment is diagonal to the already assembled segment, two or three people have to manually fine-tune the segment, which is time-consuming. . In addition, the process of attaching the segments by hand with bolts is not only time-consuming, but also involves heavy labor and danger since the work is carried out in narrow tunnels with heavy objects. there were. These factors have led to a significant increase in tunnel construction costs.

The present invention has been devised to solve the various problems described above, and its purpose is to provide segment 0 posture 8 arbitrary 5 control lt6':'!''7''8-.

Easier and faster assembly work of tunnels and IF joints of tunnels 1
It is an object of the present invention to provide a shield excavator capable of reducing strikes.

Another object of the present invention is to provide a shield excavator that can arbitrarily control the posture of the segments and assemble the segments automatically and mechanically, making the assembly work of the segments easier and faster. It is about providing.

A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

As shown in FIGS. 2 and 3, the shield tunneling machine has a cylindrical shield frame 1 forming its outer shell, and an annular turning ring 2 is disposed inside the shield frame 1 along its inner peripheral wall. is rotatably provided 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. Mr is a motor equipped with a pinion 5, and is fixed to the shield frame 1 via four rackets 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. The guide rods 8 are provided at both ends of the suspension beam 7, and are slidably fitted into guide holes 10 of a support arm 9 attached to the swing ring 2. A telescopic cylinder 11 is suspended between each support arm 9 and the suspension beam 7 to displace the suspension beam 7 in the radial direction.

A slightly smaller arch-shaped base balancer 12 is provided on the suspension beam 7 so as to be slidable in the axial direction of the shield frame 1 via a pair of guide bars 13.

The guide bars 13 are attached to the base balancer 12 having a groove-shaped cross section, and are slidably inserted into slide holes 14 formed in the suspension beam 7, respectively. A sliding cylinder 15 is provided on the suspension beam 7 for sliding the base balancer 12 in the axial direction.

An end balancer 17 is provided outside the base balancer 12 via a ball joint 16. The ball joint 16 is attached to the bracket 1 on the outer surface of the base balancer 12 as shown in FIG.
Shaft 2 with ball head 19 mounted horizontally via 8
0 and a spherical bearing 21 slidably fitted to the spherical head 19 of the segment S
The end balancer 1 is formed in an arc shape along the inner surface of the end balancer 1.
It is fixed to the center of the inner surface of 7.

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 at a predetermined distance m from the ball joint 16 to both sides of the shield frame 1 in the circumferential direction. 16 in the axial direction rearward of the shield frame 1 by a predetermined distance n1llll.

Therefore, both posture adjustment cylinders 22 can be expanded and contracted at the same time. ; b k # W /<Ua ga, □81 can be made to tug, and by alternately expanding and contracting, the end balancer 17 can be rolled.

A gripping member 23 for removably gripping the segment se is provided at the center of the outer surface of the end balunnut 7. This gripping member 23 consists of a rotary engagement hook in which a T-shaped hook portion 25 is formed at the tip of a rotating shaft 24 that protrudes radially outward from the end balancer 17, and is shown in FIG.
As shown in FIG. 6, the segment S is engaged by being rotated by 90 degrees with respect to the engagement hole 26 formed at the center of the inner surface thereof, and is disengaged by returning 906. In order to automate this engagement and disengagement, a tanabata (not shown) for rotating the rotating shaft 24 is connected to the rotating shaft 24.

Further, in order to reliably support the segment S gripped by the gripping member 23, the end balancer 17 includes a support jack 27 that 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 are provided.

Furthermore, the end balancer 17 is provided with a segment S.
An appropriate number of bolt fastening members 28 are provided for connecting bolts to the 8,3□5, 2.4□8A, OL.

By the way, as shown in FIG. 5, the segment S has a flange 29 for bolt connection on the peripheral edge and a flange hole 3 opened in the inner surface of the segment S to form the flange 29.
0 are formed at appropriate intervals, and each flange 29 is formed with a bolt hole 31 through which a bolt is inserted.

In addition, in order to simplify the supply of bolts and nuts to each bolt hole 31, as shown in FIG. The bolts 34 are attached to the other flange 29b so as to be rotatable.
is attached in advance via a holder 35 made of a leaf spring with its tip facing the hole 31. In this case, it is more convenient in relation to the bolt fastening member 28 to attach the nut 33 to the already assembled flange 29a on the segment O side.

The bolt fastening member 28 is inserted into each flange hole 30, engages with the head 34a of the bolt 34, and connects it to the holder 3.
A bolt engaging arm 36 that does not move toward the nut 32 against the spring force of 5, and a nut engaging arm 37 that engages with the nut 32 to rotate it. The proximal end of the bolt engaging arm 36 is slidably mounted on a guide bar 38 which is erected at the proximal end of the bolt engaging arm 36. Further, a jack 39 is provided at the base end of the nut engaging arm 37 for moving the bolt engaging arm 36 toward and away from it, and a jack 39 is provided at the distal end for engaging the nut 32 and rotating it. A rotating tool 40 is rotatably provided.

As means for applying rotational force to the rotating tool 40, a motor M2 is attached to the base end of the nut engaging arm 37, and a sprocket 41 fixed to the rotating shaft and a sprocket 42 fixed to the rotating tool 40 are connected to each other. The chain 4-3 is wrapped around it. Bolt fastening member 28 configured in this way
are arranged on the end balancer 17 in accordance with the portion to be bolted. The bolt fastening member 28 is attached by fixing the tip of the guide bar 38 to the end balancer 17 via a jack 44, and the nut rotating tool 40 is tightened by the expansion and contraction of the jack 44. 3
2 will be engaged and disengaged.

Next, the operation of the above embodiment will be described.

First, the segment S is placed with the engagement hole 26 facing upward.
The end balancer 17 is brought close to IK, and the engagement hook, which is the gripping member 23, is inserted into the engagement hole 26 of the segment S, and the engagement hook is rotated by 90 degrees to bring it into the engaged state. Next, the segment S is lifted up and fixed by pressing the inner surface of the segment S by the extension operation of the support jack 27, and then the segments 1 to S are transported to a predetermined connection position on the already assembled segment 0. do. These operations are performed by the rotation of the swing ring 2, the radial movement of the suspension beam 7, and the automatic axial interlocking operation of the base balancer 12, and the segments S are conveyed to a predetermined connection position. If the posture or position of the segment S is deviated at this predetermined connection position, then the following occurs. In this case, as shown in FIG. 5, the deviation in the X-axis direction is eliminated by the automatic axial movement of the base balancer 12 by the sliding jack 15, the deviation in the Y-axis direction is eliminated by the rotation of the swing ring 2, and the deviation in the Z-axis direction is The displacement is eliminated by the radial movement of the suspension beam 7 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, while rotational deviations around the Y-axis are eliminated by simultaneous activation of both posture adjustment cylinders 22. It is resolved by

Incidentally, the rotational deviation around the Z-axis is resolved by rotating the segment S around the gripping member 23 when the segment S abuts against the end of the existing segment 0. In this way, the posture of the segment S can be adjusted freely, and therefore the assembly of the segment is easier and faster.

Once the segment S has been positioned in this way, the bolt connection work is performed. In this case, since the bolt engaging arm 36 and nut engaging arm 37 of the bolt fastening member 28 are inserted into the registration hole 30 when positioning the segment S, the nut rotating tool 40 is engaged with the nut 32, the bolt engaging arm 36 is engaged with the head 34a of the bolt 34, and in this state, the nut 32 is rotated while pushing the bolt 34 toward the nut 32. Pol] -34 push movement is jack 4
4 through the bolt engagement arm 37,
The nut 32 is rotated by the nut rotating tool 40 by the motor M2.
This is done by rotating. In addition, bolt 3
The pushing movement of step 4 can also 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.

In summary, the present invention exhibits the following excellent effects.

(1) A base balancer is provided on the suspension beam so as to be movable in the axial direction, and a base balancer that serves as a holding plate for the segments is provided on this base balancer via a ball joint, and this end balancer is connected to the ball joint using an attitude adjustment cylinder. Since the fulcrum is swing-adjusted in the circumferential and axial directions, the posture of the segment can be controlled arbitrarily through the end balnch, which makes assembly of the segment easier and faster, and reduces tunnel construction costs. It is possible to reduce the

(2) In addition to the above configuration, since a bolt fastening member is provided on the end balancer, it is possible to assemble the segments automatically and mechanically while controlling the orientation of the segments as desired. It is possible to make the process easier and faster, and also to reduce labor and increase safety.

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

[Brief explanation of the drawing]

FIG. 1 is a rear view of a shield tunneling machine showing a conventional example, FIG. 2 is a rear view of a shield tunneling machine showing an embodiment of the present invention, FIG. 3 is a sectional view taken along the line 1-1 in FIG. The figure is an enlarged sectional view of the ball joint, FIG. 5 is a perspective view of a segment used in this shield tunneling machine, FIG. 6 is a diagram showing the relationship between the engagement hole formed in the segment and the gripping member, and FIG. The figure is an enlarged view of the bolt fastening member. In the figure, 1 is a shield frame, 2 is a turning ring, 7 is a suspension beam, 12 is a base balancer, 16 is a ball joint, 17 is an end balancer, 22 is an attitude adjustment cylinder, 23 is a gripping member,
28 is a bolt fastening member. Patent Applicant Tokyo Electric Power Co., Ltd. Ishikawajima-Harima Heavy Industries Co., Ltd. Representative Patent Attorney Nobuo Kinutani Engraving of the drawing (Contents: 'No changes) Figure 1 Figure 3 Procedures Ishi-Shijuku I. (Method) Manabu Shiga, Commissioner of the Japan Patent Office, October 4, 1980 1. Indication of matter 11: Japanese Patent Application No. 115559/1982 2. Name of the invention: Shield tunneling machine 3. Relationship with the amended person's case: Patent application Person (36B) Tokyo Electric Power Company, Inc. 1 other person 4 Agent postal code 105 1-6-7-5 Atago, Minato-ku, Tokyo Date of amendment order September 25, 1980 (Date of dispatch) 6. Amendment order Subject drawing 7, details of amendment (1) Submit appropriate drawings as shown in the attached sheet. (However, the contents will not be changed.) 8. List of attached documents (1) Drawings 1 copy 525-

Claims (2)

[Claims] (1) A shield tunneling machine having a swing ring that rotates along the inner wall of the shield frame and a hanging beam that moves from the swing ring in the radial direction of the shield frame in order to convey the segment to the inner wall of the tunnel. A base balancer that moves in the axial direction of the shield frame is provided on the suspension beam, an end balancer is provided outside the base balancer via a ball joint, and the end balancer is attached to the shield frame with the ball joint as a fulcrum. The shield ll1i! is provided with an attitude adjustment cylinder for adjusting the attitude by swinging in the axial and circumferential directions, and a gripping member for detachably holding the segment is provided on the outside of the end balancer. Advance. (2) A shield tunneling machine having a swing ring that rotates along the inner wall of the shield frame in order to convey the segment to the inner wall of the tunnel, and a hanging beam that moves from the swing ring in the radial direction thereof. 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; A posture adjustment cylinder for adjusting the posture by swinging in the axial and circumferential directions of the shield frame is provided at the stage number, a gripping member for detachably gripping the segment is provided on the outside of the end balancer, and the segment is already assembled. A shield excavator characterized in that a bolt fastening member is provided for connecting bolted segments with bolts.