JP2000352300A - Erector device and tunnel excavator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve positioning accuracy of a segment in an erector device and a tunnel excavator. SOLUTION: A segment holding mechanism 29 is installed by swingingly supporting a segment support 28 via a slide member 26 and a spherical bearing 27 by a slide box 23 movably supported in the peripheral direction, the lengthwise direction and the radial direction of a tunnel, a pair of first jacks 31, 32 and a pair of second jacks 33, 34 are installed between the slide box 23 and the segment support 28, and while arranging the second jacks 33, 34 on both side of the spherical bearing 27 so as to cross each other, the first jacks 31, 32 are arranged on one side of the spherical bearing 27 so as to form an almost straight line shape with the second jack 33.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an erector device for assembling a segment carried into a tunnel at a predetermined position on an inner wall surface of a tunnel, and a tunnel excavator such as a tunnel boring machine or a shield excavator equipped with the erector device. About.

[0002]

2. Description of the Related Art For example, in a conventional shield excavator, a cutter head is rotatably mounted on a front portion of a cylindrical excavator body by a driving motor, and a plurality of shields are provided on a rear portion of the excavator body. The jacks are arranged side by side in the circumferential direction, and the erector device is mounted. Accordingly, when each shield jack is extended and the excavator body is advanced by the reaction force against the existing segment while rotating the cutter head by the drive motor, the cutter head excavates the ground in front. Then, the excavated earth and sand are discharged to the outside, and the segments having a predetermined length can be constructed by attaching the segments to the inner wall surface of the existing tunnel in a ring shape by the erector device.

In such a tunnel excavation operation, the erector device moves while holding the segment carried into the existing tunnel, and assembles the segment held at a predetermined position on the inner wall surface of the existing tunnel. In this case, since the held segment is positioned at an appropriate position with respect to the existing segment and both are joined by bolts or the like,
It is necessary to control the erector device with high accuracy.

As a conventional erector device, for example, there is one disclosed in Japanese Utility Model Laid-Open No. 6-40100. The "segment assembling apparatus" disclosed in this publication includes a pivoting portion of a revolving frame rotatably supported by a shield excavator body and a segment operation plate to which a segment gripping mechanism is attached, both ends of which are connected via a universal joint. Are connected by six actuators, and a surface formed by an arbitrarily selected pair of actuators and another arbitrary actuator are arranged so as to be oblique to each other.

[0005] Accordingly, the segment operating plate can be freely moved with six degrees of freedom of turning, sliding, elevating, pitching, rolling, and yawing to the shield excavator to stabilize the segment held by the segment operating plate. Can be assembled at a predetermined position.

[0006]

However, as described above, in the conventional "segment assembling apparatus", the segment operating plate holding the segments is given six degrees of freedom by the expansion and contraction driving of the six actuators. I have. The need for six actuators complicates the structure, and also complicates hydraulic piping for operating a large number of actuators, resulting in an increase in the size of the device. In addition, in order to control the posture of the segment operation plate in accordance with the assembly position of the segment, it is necessary to control the expansion and contraction strokes of each actuator with high accuracy, which complicates the hydraulic control and increases the cost. There's a problem.

Further, since the position and attitude of the segment operation plate are controlled only by the expansion and contraction strokes of the plurality of actuators, the hydraulic supply / discharge source is stopped or
If hydraulic pressure drops due to hydraulic hose breakage,
Segment position and attitude control cannot be performed at all.

An object of the present invention is to solve such a problem, and an object of the present invention is to provide an erector apparatus and a tunnel excavator which improve the positioning accuracy of segments and simplify the structure.

[0009]

According to a first aspect of the present invention, there is provided an erector apparatus for assembling a segment carried into a tunnel on an inner wall surface of the tunnel. Moving member supported movably along the direction, the longitudinal direction and the radial direction, a support member connected to the moving member by a spherical bearing, and a tunnel provided between the moving member and the support member. A pair of first jacks arranged in the circumferential direction, a pair of second jacks installed between the moving body and the support member and arranged in the longitudinal direction of the tunnel, and mounted on the support member; And a holding mechanism capable of holding the segment.

[0010] Further, in the elector device according to the second aspect of the present invention, the pair of first jacks are disposed on one side in a longitudinal direction of the tunnel with respect to a connecting portion of the moving body and the support member by the spherical bearing. It is characterized by being established.

According to a third aspect of the present invention, the pair of first jacks and one of the pair of second jacks are arranged substantially in a straight line along the circumferential direction of the tunnel. And

[0012] Further, in the elector apparatus according to the fourth aspect of the present invention, the pair of second jacks are arranged to be inclined so as to cross each other.

Further, in the elector device according to the fifth aspect of the present invention, a slide member is supported by a support member fixed to the movable body so as to be movable along a tunnel radial direction, and the slide member is supported by the slide member by the spherical bearing. Are connected.

According to a sixth aspect of the present invention, the support member is provided with a pair of stoppers for limiting a moving range of the slide member.

Further, in the elector device according to the present invention, a slide member is movably supported along the circumferential direction of the tunnel by a support member fixed to the moving body, and the support member is supported by the slide member by the spherical bearing. Are connected.

The tunnel excavator according to the invention of claim 8 has a cylindrical excavator main body, a propulsion jack for advancing the excavator main body, and a rotatably mounted front part of the excavator main body. A cutter head, cutter head driving means for driving and rotating the cutter head, an erector device for holding the segment carried into the tunnel and assembling it at a predetermined position, and excavating excavated earth and sand generated by excavating the cutter head to the outside. A moving body supported movably along a circumferential direction, a longitudinal direction, and a radial direction of a tunnel at a rear portion of the excavator body; and a spherical bearing mounted on the moving body. A pair of first jacks that are connected between the movable body and the support member and that are arranged side by side in the circumferential direction of the tunnel; It has a pair of second jacks erected between the support member and juxtaposed in the longitudinal direction of the tunnel, and a holding mechanism attached to the support member and capable of holding the segment. is there.

[0017]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 shows a schematic configuration of an erector device according to a first embodiment of the present invention, FIG. 2 shows a front view of the erector device of the embodiment, and FIG. 3 shows a cross section taken along line III-III of FIG.

In the shielded excavator of the present embodiment, the excavator body has a cylindrical shape, a disk-shaped cutter head is rotatably mounted on the front part, and can be driven to rotate by a drive motor. A number of cutter bits are installed. A plurality of shield jacks are arranged in the rear part of the excavator body along the circumferential direction, and an erector device for attaching a segment as a lining member to the inner wall surface of the existing tunnel is mounted.

In the erector device of the present embodiment, as shown in FIGS.
The erector device 11 is provided at a rear portion of the excavator body 12, and assembles a new segment S into a space between the excavator body 12 advanced by the shield jack 13 and the existing segment S.

That is, a rotary ring 15 is rotatably supported by a support ring 14 provided at the rear portion of the excavator body 12, and the rotary ring 15 is rotatable by a plurality of hydraulic motors 16. An elevating table 17 is supported on the outer periphery of the rotating ring 15 by a guide rod 18 so as to be able to move up and down along the radial direction of the existing tunnel.
9 makes it possible to move up and down. A control device 20 and a hydraulic unit 21 are installed on the left and right of the lift 17, and a counterweight 22 is mounted on the upper part.

A slide box 23 as a movable body is movably supported on the lift 17 along the longitudinal direction of the existing tunnel, and can be moved by a movable jack 24. A U-shaped slide guide 25 as a support member is fixed to the slide box 23, and a slide member 26 is movably supported on a horizontal portion of the slide guide 25 along the circumferential direction of the tunnel.
A segment support 28 as a support member is swingably supported on the slide member 26 via a spherical bearing 27. The segment support 28 is provided with a segment holding mechanism 29 for holding the segment S carried into the existing tunnel and a bolt fastening machine 30 for connecting and fixing the segments S together.

Then, between the slide box 23 and the segment support 28, a pair of first jacks 31, 32 arranged side by side in the circumferential direction of the tunnel and a pair of second jacks 31 arranged in the longitudinal direction of the tunnel. Jacks 33 and 34 are erected. The second jacks 33 and 34 are spherical bearings 27
Are arranged at an angle so as to cross each other when viewed from the front. On the other hand, the first jacks 31, 3
Numeral 2 is located on one side in the longitudinal direction of the tunnel with respect to the spherical bearing 27 and is located on the front side and the rear side of the second jack 33 so as to be substantially linear along the circumferential direction of the tunnel. . In addition, the slide box 23 and the segment support 2 in each jack 31, 32, 33, 34
The connecting portion 8 is a free joint.

Therefore, when the hydraulic motor 16 is driven, the segment support 28 can be moved in the circumferential direction of the tunnel, and when the lifting / lowering jack 19 is extended or contracted, the segment support 28 can be moved in the radial direction of the tunnel. By expanding and contracting, the segment support 28 can be moved in the longitudinal direction of the tunnel. Also, the first
By expanding and contracting the jacks 31, 32 and the second jacks 33, 34, the segment support 28 can swing in the rolling, pitching, and yawing directions, respectively. That is, while the segment holding mechanism 29 holds the segment S, the jacks 31, 32, 33, 34, etc. are driven to expand and contract to adjust the attitude of the held segment S with respect to the existing segment S. It can be moved to a predetermined assembly position. And each jack 3
By controlling the amount of expansion and contraction such as 1, 32, 33, 34, etc., the held segment S can be finely adjusted and moved along the circumferential direction of the tunnel.

As described above, in the elector apparatus according to the present embodiment, the segment support 28 is swingably supported by the slide box 23 via the slide member 26 and the spherical bearing 27, and the segment support 28 is supported by the segment support 28. Is mounted, a pair of first jacks 31, 32 and a pair of second jacks 33, 34 are bridged between the slide box 23 and the segment support 28, and the second jacks 33, 34 are provided on both sides of the spherical bearing 27. The first jacks 31 and 32 are arranged on one side of the spherical bearing 27 so as to be substantially in line with the second jack 33 while being arranged so as to cross each other.

Therefore, the hydraulic motor 16, the lifting jack 1
9. Segment support 28 by moving jack 24
In the circumferential direction of the tunnel, radial movement, and longitudinal movement, and pitching, rolling, and yawing can be performed by the four jacks 31 to 34. As a result, a simple configuration and six degrees of freedom can be obtained. Movement can be given freely.

FIG. 4 is a front view of an elector device according to a second embodiment of the present invention, and FIG. 5 is a sectional view taken along line V-VI of FIG. Note that members having the same functions as those described in the above-described embodiment are denoted by the same reference numerals, and redundant description will be omitted.

As shown in FIGS. 4 and 5, in the erector device 41 of this embodiment, the elevating table 17 supported by the guide rods 18 so as to be able to move up and down in the radial direction of the existing tunnel is provided in the longitudinal direction of the existing tunnel. The slide box 23 is movably supported along. An upper end of a support cylinder 42 is fixed to the slide box 23, and a segment support 28 is swingably supported at a lower end of the support cylinder 42 via a spherical bearing 43. The segment support 28 is provided with a segment holding mechanism 29 for holding the segment S carried into the existing tunnel. The segment holding mechanism 29 is the same as that of the above-described embodiment, and has a central portion of the segment S. The locking portion 45 grips the bolt 44 fixed to the segment, contracts the holding jack 46, and moves the segment S to the segment support 28.
, The segment S can be held.

Then, between the slide box 23 and the segment support 28, a pair of first jacks 31,
32 and a pair of second jacks 33 and 34. The configurations of the first jacks 31 and 32 and the pair of second jacks 33 and 34 are the same as those of the above-described embodiment, and a description thereof will be omitted. Therefore, by expanding and contracting the first jacks 31, 32 and the second jacks 33, 34, the segment support 28 can be swung in the rolling, pitching, and yawing directions, respectively.

As described above, in the elector apparatus of the present embodiment, the segment support 28 is swingably supported on the slide box 23 via the spherical bearing 27, and the segment support mechanism 29 is mounted on the segment support 28. A pair of first jacks 31 and 32 and a pair of second jacks 3 between the slide box 23 and the segment support 28.
3 and 34, and the second jacks 33 and 34 are disposed on both sides of the spherical bearing 27 so as to cross each other, while the first jacks 31 and 32 are provided on one side of the spherical bearing 27 with the second jack 33 and 34. They are arranged in a substantially straight line.

Therefore, the hydraulic motor 16, the lifting jack 1
9. Segment support 28 by moving jack 24
In the circumferential direction of the tunnel, radial movement, and longitudinal movement, and pitching, rolling, and yawing can be performed by the four jacks 31 to 34. As a result, a simple configuration and six degrees of freedom can be obtained. Movement can be given freely. When the segment S is moved in the circumferential direction of the tunnel and brought into close contact with the existing segment S, the seal member C attached around the segment S is pressed. A large force is applied by the hydraulic motor 16 as the pressing force. In addition, this pressing force is received by the slide box 23 via the support tube 46 instead of the jacks 31 to 34, so that it is possible to cope with a construction site having a deep water depth and a large earth pressure.

FIG. 6 shows a front view of an elector device according to a third embodiment of the present invention. Note that members having the same functions as those described in the above-described embodiment are denoted by the same reference numerals, and redundant description will be omitted.

As shown in FIG. 6, in the erector device 51 of this embodiment, the elevator 17 supported by the guide rods 18 so as to be able to move up and down along the radial direction of the existing tunnel extends along the longitudinal direction of the existing tunnel. Slide box 2
3 is movably supported. A slide guide 52 is fixed to the slide box 23, and a slide member 53 is supported on the slide guide 52 so as to be movable along the radial direction of the tunnel.
The segment support 28 is swingably supported at 3 via a spherical bearing 54. Also, the slide guide 52
A pair of stoppers 55 and 56 for restricting the moving range of the slide member 53 are attached to. The segment support 28 is provided with a segment holding mechanism 29 for holding the segment S carried into the existing tunnel.

Then, between the slide box 23 and the segment support 28, a pair of first jacks 31,
32 and a pair of second jacks 33 and 34. The configurations of the first jacks 31 and 32 and the pair of second jacks 33 and 34 are the same as those of the above-described embodiment, and a description thereof will be omitted. Therefore, by expanding and contracting the first jacks 31, 32 and the second jacks 33, 34, the segment support 28 can be swung in the rolling, pitching, and yawing directions, respectively.
Then, by controlling the amount of expansion and contraction of each of the jacks 31, 32, 33, and 34, the held segment S can be finely adjusted and moved along the radial direction of the tunnel.

As described above, in the elector apparatus of this embodiment, the segment support 28 is swingably supported by the slide box 23 via the slide member 53 and the spherical bearing 54, and the segment support 28 is supported by the segment support mechanism 29. Is mounted, a pair of first jacks 31, 32 and a pair of second jacks 33, 34 are bridged between the slide box 23 and the segment support 28, and the second jacks 33, 34 are provided on both sides of the spherical bearing 27. The first jacks 31 and 32 are arranged on one side of the spherical bearing 27 so as to be substantially in line with the second jack 33 while being arranged so as to cross each other.

Accordingly, the hydraulic motor 16, the lifting jack 1
9. Segment support 28 by moving jack 24
In the circumferential direction of the tunnel, radial movement, and longitudinal movement, and pitching, rolling, and yawing can be performed by the four jacks 31 to 34. As a result, a simple configuration and six degrees of freedom can be obtained. Movement can be given freely. When the segment S is moved in the circumferential direction of the tunnel and brought into close contact with the existing segment S, the seal member C attached around the segment S is pressed. A large force is applied by the hydraulic motor 16 as the pressing force. In addition, the pressing force is received by the slide box 23 via the slide guide 52 instead of the jacks 31 to 34, so that it is possible to cope with a construction site having a deep water depth and a large earth pressure.

A pair of upper and lower stoppers 55 and 5 for restricting the moving range of the slide member 53 are provided on the slide guide 52.
The jacks 31 to 34 are attached when the hydraulic supply / discharge source is stopped or the hydraulic hose is damaged, for example.
Even if the hydraulic pressure of
As a result, there is no danger that the segment S will fall down.

[0038]

As described in detail in the above embodiment, according to the erector device of the first aspect of the present invention, the movable body movably supported along the circumferential, longitudinal and radial directions of the tunnel. A support member is connected by a spherical bearing, and a pair of first jacks juxtaposed in the circumferential direction of the tunnel between the moving body and the support member and a pair of second jacks juxtaposed in the longitudinal direction of the tunnel are erected. Since the support member is equipped with a holding mechanism capable of holding the segments, the four jacks can move the pitching, rolling, and yawing of the support member, and can freely give six degrees of freedom. , While improving the positioning accuracy of the segment,
By reducing the number of jacks, the structure can be simplified and the control can be facilitated.

According to the second aspect of the present invention, the pair of first jacks is disposed on one side in the longitudinal direction of the tunnel with respect to the connection between the moving body and the support member by the spherical bearing. In addition, the expansion and contraction control of the jack can be easily performed.

According to the third aspect of the present invention, the pair of first jacks and one of the pair of second jacks are disposed substantially in a straight line along the circumferential direction of the tunnel. Expansion and contraction control can be easily performed.

According to the fourth aspect of the present invention, since the pair of second jacks are disposed obliquely so as to cross each other, the position and orientation of the support member can be easily adjusted, and the expansion and contraction of the jack can be controlled. Can be easily performed.

According to the fifth aspect of the present invention, the slide member is supported by the support member fixed to the moving body so as to be movable along the tunnel radial direction, and the slide member is supported on the slide member by a spherical bearing. Was linked,
Fine adjustment movement of the segment in the radial direction of the tunnel becomes possible, and the positioning accuracy of the segment can be improved.

According to the elector device of the sixth aspect of the present invention, the support member is provided with the pair of stoppers for limiting the range of movement of the slide member.
Even if the hydraulic pressure of the jack decreases due to the breakage of the hydraulic hose, the slide member abuts the stopper and is prevented from moving, so that there is no danger of the segment dropping, and safety can be improved. .

According to the elector device of the present invention, the slide member is movably supported along the circumferential direction of the tunnel by the support member fixed to the moving body, and the support member is supported on the slide member by the spherical bearing. Because of the connection, fine adjustment movement of the segment in the circumferential direction of the tunnel is possible,
The accuracy of segment positioning can be improved.

According to the tunnel excavator of the present invention, the cutter head is mounted on the front portion of the excavator body so that the cutter head can be driven and rotated by the cutter head driving means.
A propulsion jack enables advancement, an erector device holds the lining member, adjusts the posture, and can be assembled to the existing lining member. In this erector device, the support member is connected to a moving body movably supported in the circumferential direction, the longitudinal direction, and the radial direction of the tunnel by a spherical bearing, and the tunnel is moved between the moving body and the support member. A pair of first jacks arranged side by side in the circumferential direction and a pair of second jacks arranged side by side in the longitudinal direction of the tunnel were erected, and the support member was equipped with a holding mechanism capable of holding the segment. The jack enables pitching, rolling and yawing movement of the support member, giving a total of six degrees of freedom. Can, it is possible to improve the segment positioning accuracy, by reducing the number of jacks, it is possible to facilitate the simplification and control structures. As a result, the accuracy of segment positioning and the workability can be improved, and the tunnel excavation work efficiency can be improved.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of an elector apparatus according to a first embodiment of the present invention.

FIG. 2 is a front view of the erector device of the embodiment.

FIG. 3 is a sectional view taken along the line III-III of FIG. 2;

FIG. 4 is a front view of an elector device according to a second embodiment of the present invention.

FIG. 5 is a sectional view taken along line V-VI of FIG. 4;

FIG. 6 is a front view of an elector device according to a third embodiment of the present invention. DESCRIPTION OF SYMBOLS 11 Electa apparatus 12 Excavator main body 13 Shield jack 17 Elevating stand 19 Elevating jack 23 Slide box (moving body) 24 Moving jack 25 Slide guide 26 Slide member 27 Spherical bearing 28 Segment support (support member) 29 Segment holding mechanism 30 Bolt fastening machine 31, 32 First jack 33, 34 Second jack 41 Electa device 42 Support cylinder 43 Spherical bearing 51 Elector device 52 Slide guide 53 Slide member 54 Spherical bearing 55, 56 Stopper

Continuation of the front page (72) Inventor Yoshimitsu Kumano 1-1-1 Wadazakicho, Hyogo-ku, Kobe-shi, Hyogo F-term in Mitsubishi Heavy Industries, Ltd. Kobe Shipyard 2D055 BA01 BB01 GB04 GB05 GB07 GB07 GB08

Claims (8)

[Claims] 1. An erector device for assembling a segment carried into a tunnel to an inner wall surface of a tunnel, wherein a moving body supported movably in a circumferential direction, a longitudinal direction, and a radial direction of the tunnel by a device body; A support member connected to the body by a spherical bearing, a pair of first jacks installed between the moving body and the support member, and arranged in parallel in the circumferential direction of the tunnel; and the moving body and the support member. And a pair of second jacks arranged in the longitudinal direction of the tunnel, and a holding mechanism mounted on the support member and capable of holding the segment. 2. The elector device according to claim 1, wherein
The erector device, wherein the pair of first jacks is disposed on one side in a longitudinal direction of the tunnel with respect to a connection portion of the moving body and the support member by the spherical bearing. 3. The elector device according to claim 2, wherein
An elector apparatus wherein the pair of first jacks and one of the pair of second jacks are arranged substantially in a straight line along the circumferential direction of the tunnel. 4. The erector device according to claim 1, wherein
The pair of second jacks are disposed so as to be inclined so as to intersect with each other. 5. The erector device according to claim 1, wherein
An erector device, wherein a slide member is movably supported along a tunnel radial direction by a support member fixed to the moving body, and a support member is connected to the slide member by the spherical bearing. 6. The elector device according to claim 5, wherein
An elector device wherein the support member is provided with a pair of stoppers for limiting a moving range of the slide member. 7. The erector device according to claim 1, wherein
An erector device, wherein a slide member is movably supported along a circumferential direction of the tunnel by a support member fixed to the moving body, and a support member is connected to the slide member by the spherical bearing. 8. An excavator body having a cylindrical shape, a propulsion jack for advancing the excavator body, a cutter head rotatably mounted on a front portion of the excavator body, and driving and rotating the cutter head. The erector, comprising: a cutter head driving means, an erector device for holding a segment carried into the tunnel and assembling it in a predetermined position, and an earth discharging means for discharging excavated earth and sand generated by excavating the cutter head, The apparatus comprises: a moving body movably supported at a rear portion of the excavator body along a circumferential direction, a longitudinal direction, and a radial direction of a tunnel; a support member connected to the moving body by a spherical bearing; A pair of first jacks installed between the movable body and the support member, and a pair of first jacks installed between the movable body and the support member. Of a pair of second
A tunnel excavator comprising: a jack; and a holding mechanism mounted on the moving body and capable of holding the segment.