JPH1018788A - Segment erector device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To turn and reverse a segment so as to be opposed to the internal wall surface by supporting a segment holding grip so as to be movable in the directions of X-Y axes and to be turnable around an axis in an excavating direction and an orthogonal axis. SOLUTION: An erector device 21 is provided with a grip 47, moved and rotated while gripping a segment G3, at the rear drum of a shield machine. A vertical moving body 25 can be moved in a Y-direction by a hydraulic motor 26. A lateral moving body 29 is movably supported to the vertical moving body 25. A turning body 32 is supported to the lateral moving body 29 so as to be turnable around an axis O in an excavating direction. A first reversing body 40 is supported to the turning body 32 rotatably by a specified angle around an axis orthogonal to the excavating direction. A second reversing body 42 is supported rotatably around an axis T orthogonal to the rotational axis of the first reversing body 40, and the grip 47 for holding the segment is mounted to the second reversing body 42. The grip 47 is therefore moved vertically and horizontally in a tunnel to receive the segment G3 and can be turned to reverse in an erecting position.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a segment erector device for assembling a segment carried into an existing tunnel on an inner wall surface of the tunnel.

[0002]

2. Description of the Related Art Excavation of a tunnel having a predetermined cross-sectional shape is performed, for example, using a shield excavator. That is, by rotating and driving the cutter head mounted on the front part of the excavator body, and by extending the shield jack and pressing it against the existing segment S, the excavator body moves forward while receiving the pressing reaction force, The head excavates the tunnel by excavating the ground in front. Then, the tunnel is constructed by mounting the new segment S in the space between the existing segment S formed by contracting the shield jack and the existing segment S.

[0003] The cross-section of a tunnel formed by excavation varies depending on the purpose of use, and in addition to a circular cross-section, there is an elliptical cross-section, a square cross-section, a rectangular cross-section, a horseshoe cross-section and the like. In this case, for example, in the case of a tunnel having a rectangular vertical section as shown in FIG. 7, the shape of the segment to be assembled on the inner wall surface of the tunnel after excavation is also adapted to this tunnel sectional shape. In addition to the types, a beam I for reinforcement is required. Conventionally, when assembling a segment on the inner wall surface of an existing tunnel, a large number of segments are mounted on a transport trolley, carried into the existing tunnel, and an erector device provided at the rear of the shield excavator holds the segment, It was moving to the position.

[0004]

However, in the above-described tunnel having a rectangular vertical section shown in FIG. 7, the width of the existing tunnel is narrow, while the number of the eight types of segments is small. the length L of has a longer than the width W ₁ in the existing tunnel. Therefore, the segment cannot be carried in a horizontal state so as to match the assembling direction, and the segment must be carried in a horizontal state and the length direction of the segment is taken as the carrying direction. Therefore, when transferring from the segment carrier to the erector device, the operator has to change the direction of the segment to the direction of the assembly by a predetermined device,
There is a problem in that the work is performed in a narrow space, the burden on the operator is large, and the work time is long.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a segment erector device in which the burden on an operator is reduced, safety is improved, and workability is improved. Aim.

[0006]

According to a first aspect of the present invention, there is provided a segment erector device for assembling a segment carried into an existing tunnel to an inner wall surface of a tunnel, the segment erector device being provided at a rear portion of an excavator body. A vertical moving body movably supported in a vertical direction perpendicular to the excavation direction, a horizontal moving body movably supported by the vertical moving body in a horizontal direction perpendicular to the excavation direction, and the horizontal movement A revolving body rotatably supported by the body with an axis parallel to the excavation direction, a first reversing body rotatably supported by the revolving body at a predetermined angle with an axis perpendicular to the excavation direction; A second reversing body supported by the reversing body so as to be rotatable by a predetermined angle with an axis perpendicular to the excavation direction and orthogonal to a rotation axis of the first reversing body; Segment It is characterized in that comprises a holding can grip.

Therefore, the vertical moving body is moved in the horizontal direction perpendicular to the excavation direction or the horizontal moving body is moved in the horizontal direction perpendicular to the excavation direction with respect to the segment carried in the existing tunnel in the horizontal longitudinal direction. Or by turning the revolving body with the axis parallel to the excavation direction to approach the grip, receive this segment, and move the first reversing body and the second reversing body with the axis perpendicular to the excavation direction. By rotating the angle, the held segment is reversed in the assembling direction, and the segment held by the grip is similarly moved again to assemble the segment held at a predetermined position on the inner wall surface of the tunnel.

Further, in the segment elector apparatus of the present invention, the revolving body supports an auxiliary moving body which is movable by a predetermined distance along a direction orthogonal to the excavation direction, and the first reversing body is mounted on the auxiliary moving body. It is characterized by being rotatably supported.

Therefore, when assembling the segment held by the grip at a predetermined position on the inner wall surface of the tunnel, the auxiliary moving body is moved by a small distance along the direction perpendicular to the excavation direction, so that the segment can be moved with respect to the inner wall surface of the tunnel. Fine adjustment of the assembly position is performed.

[0010] In the segment elector apparatus of the present invention, a rotary joint as a hydraulic connection source of a hydraulic control circuit is provided between the vertical moving body and the revolving body.

Therefore, even when the revolving unit turns with respect to the vertical moving body, the hydraulic supply hose and the like are not twisted, and a predetermined amount of pressure oil is supplied from the hydraulic supply source to each hydraulic drive device via the rotary joint. Supplied.

[0012]

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

FIG. 1 is a plan view of a segment elector device according to an embodiment of the present invention, FIG. 2 is a side view of the segment elector device, FIG.
4 is a cross-sectional view of a shield excavator to which the segment erector device is applied, and FIG.

As shown in FIG. 6, in the shielded excavator, the excavator body 11 is formed by fitting a cylindrical front body 12 and a rear body 13 with a seal member 14 so as to be movable back and forth. A plurality of attitude jacks 15 are provided between the front body 12 and the rear body 13. And
Two cutter heads 16a and 16b are provided at the front of the front torso 12.
Are rotatably mounted, respectively, and drive motors 17a,
17b enables driving rotation.

In the front part of the front body 12, a chamber chamber 18 is formed in the inside of the excavator main body 11 in which the cutter heads 16a and 16b take in the excavated soil, drunk, etc. The front part of the screw conveyor 19 disposed in the screw conveyor 19 is opened.
Is extended to a soil treatment facility (not shown).
A plurality of shield jacks 20 are arranged side by side in the circumferential direction at the rear part of the rear trunk 13, and an erector device 21 for assembling the segments A to H is provided at the rear part of the rear trunk 13.

As shown in FIGS. 1 to 5, a support wall 22 is formed at the rear of the rear trunk 13 of the excavator main body 11, and the support wall 22 extends vertically. A pair of left and right upper and lower guides 23 is fixed. A vertical moving body 25 is movably supported by the pair of vertical guides 23 by a plurality of guide members 24, and can be moved in the Y direction by a vertical driving device (hydraulic motor) 26. Further, a pair of upper and lower left and right guides 27 is formed on the vertical moving body 25 along the left and right direction, and the left and right moving bodies 29 are movably supported by a plurality of guide members 28 on the pair of left and right guides 27. X by the left and right driving device (hydraulic cylinder) 30
Can move in any direction.

A revolving body 32 is supported on the left and right moving body 29 by a bearing 31 so as to be freely rotatable about an axis O along the excavation direction, and is driven by two turning drive motors 33 mounted on the left and right moving body 29. The gear meshes with a ring gear 34 fixed to the revolving unit 32, and the revolving unit 32 can be turned by the turning drive motor 33.
A rotary joint 34 as a hydraulic connection source of a hydraulic control circuit is provided between the left and right moving body 29 and the revolving body 32.
Is interposed.

An auxiliary guide 35 is formed on the revolving body 32 along a direction orthogonal to the excavation direction. The auxiliary guide 35 is provided with a plurality of guide members 36 so that an auxiliary moving body 37 is moved by a predetermined distance in the P direction. It is movably supported along and can be moved by an auxiliary drive device (hydraulic motor) 38. That is, this P direction is selectively Y
The auxiliary driving device 38 is driven in a state where the revolving body 32 is turned by the turning drive motor 33 and the moving direction of the auxiliary moving body 37 is set to the up-down direction or the left-right direction. The moving body 37 can be moved along the Y direction or the X direction.

The auxiliary moving body 37 is integrally formed with a bifurcated support frame 39 extending rearward in the digging direction.
A first reversing body 40 is supported by the support frame 39 so as to be rotatable substantially by 90 degrees with an axis S orthogonal to the excavation direction, and can be reversed by a first reversing motor 41. Further, the second reversing member 42 is supported by the first reversing member 40 so as to be rotatable by approximately 90 degrees with an axis T perpendicular to the excavation direction and perpendicular to the rotation axis S of the first reversing member 40. And can be inverted by the second inversion motor 43. A grip plate 45 is movably attached to the second reversing body 42 by a pair of guide rods 44, and can be moved by a fine adjustment driving device (hydraulic motor) 46. A pair of gripping jacks 47 as grips capable of holding the segments A to H are mounted on the grip plate 45.

In addition, a rail (not shown) is laid in the existing tunnel behind the shield excavator configured as described above, and a segment carrier is movable on the rail. The segments A to H are carried into the existing tunnel by the segment carrier.

Here, a method of constructing a tunnel using the shield excavator of the present embodiment configured as described above will be described. As shown in FIG. 6, drive motors 17a, 17
When all the shield jacks 20 are extended while rotating the cutter heads 16a and 16b by b,
The excavator body 11 composed of the front trunk 12 and the rear trunk 13 moves forward by the reaction force from the existing segment S, and the cutter head 1
6a and 16b excavate the ground in front to excavate a tunnel having a rectangular cross section.

On the other hand, a plurality of segments A to H are carried into the existing tunnel by the segment carrier. At this time, the segments A to H are carried in the longitudinal direction along the front-rear direction of the existing tunnel, and the erector device 21 receives the carried segments A to H. Then, the segments A to H gripped by the elector device 21 are sequentially mounted in a space between the shield segment 21 and the existing segment S formed by contracting one shield jack 21.

That is, as shown in FIGS. 1 to 5, first, the vertical moving body 25 is moved in the Y direction by the vertical driving device 26, and the left and right moving body 29 is moved by the left and right driving device 30. By moving in the X direction, the grip plate 45 (the second reversing body 42) having the gripping jack 47 is opposed to each of the loaded segments A to H. Next, the revolving body 32 is revolved by the revolving drive motor 33 so that the orientation of the auxiliary guide 35 is positioned in the up-down direction or the left-right direction, and the auxiliary driving device 38 is driven to thereby make the gripping jack 47 (grip plate 45 ) Is slightly moved along the Y direction or the X direction, and the gripping jack 47 is moved.
And the positions of the segments A to H are adjusted. Then, in this state, the segments A to H are held by the holding jack 47.

When the erector device 21 holds the segments A to H in this manner, by rotating the reversing bodies 40 and 42, the grasped segments to H are opposed to the inner wall surface of the existing tunnel. Then, the segments A to H held by the vertical drive unit 26, the left and right drive unit 30, and the turning drive motor 33 are moved to the predetermined assembly position again. here,
After adjusting the position of the segments A to H held in the Y direction or the X direction using the turning drive motor 33 and the auxiliary drive device 38, the segments A to H are assembled on the inner wall surface of the existing tunnel.

At this time, depending on the type, the loading direction, the assembling direction, and the like of the segments H loaded into the existing tunnel,
The segments to H are efficiently assembled by selectively using the revolving operation of the revolving unit 32 and the reversing operation of the reversing units 40 and 42. For example, as shown in FIG. 5, the segment G is carried in the state of G _1, erector apparatus 21, as shown in FIGS. 1 to 3, first, grip received in a state of the segment G _2. Then, the shaft center T is driven by the second reversing motor 43.
The second reversing member 42 approximately 90 degrees rotated upward around, the inverted state of the segment G _3. Next, the first reversing body 40 is driven by the first reversing motor 41 around the axis S.
Pivots approximately 90 degrees side, and inverted inverted state of the segment G _4. In this state, the segment G is assembled at a predetermined assembly position while the position is adjusted by the auxiliary drive device 38. In the case of the segment H to be assembled on the upper wall surface of the tunnel, the inverted state (segment G)
_4), by a second reverse motor 43 rotates the second reversing member 42 about the axis T substantially 90 degrees upward and horizontal inversion state of the segment H _5, in the same manner as described above, the position with a given set Assemble to.

The segments A to H carried into the existing tunnel as described above are sequentially received and held by the erector device 21, and the held segments A to H are moved in the vertical direction, the left and right direction, and the front and rear direction in the existing tunnel. By doing so, the segments A to H face the inner wall surface of the existing tunnel and can be easily assembled at a predetermined assembly position.

[0027]

As described in detail in the above embodiment, according to the segment elector device of the present invention, the vertical movable body can be freely moved along the vertical direction perpendicular to the excavation direction at the rear of the excavator body. Support, movably support the horizontal moving body along a horizontal direction orthogonal to the excavation direction on the vertical moving body, and swingably support the revolving body with an axis parallel to the excavation direction on the horizontal moving body, The first reversing body is rotatably supported on the revolving body with an axis perpendicular to the excavation direction by a predetermined angle. The first reversing body is perpendicular to the excavation direction and perpendicular to the rotation axis of the first reversing body. Since the second reversing body is rotatably supported at a predetermined angle with the axis, and a grip capable of holding the segment is mounted on the second reversing body, the grip moves vertically and horizontally in the existing tunnel to move the segment. Receive The received segment can be turned and inverted in accordance with the assembling position to be opposed to the inner wall surface of the existing tunnel, so that the segment can be easily assembled, and as a result, the burden on the operator can be reduced. Safety and workability can be improved.

Further, according to the segment elector device of the present invention, the revolving body supports the auxiliary moving body which is movable by a predetermined distance along the direction orthogonal to the excavation direction, and the first reversing body is mounted on the auxiliary moving body. Since it is rotatably supported, it is possible to easily and accurately align the segment with the inner wall surface of the existing tunnel.

Further, according to the segment elector apparatus of the present invention, since the rotary joint as the hydraulic connection source of the hydraulic control circuit is provided between the vertical moving body and the revolving body,
Even when the revolving unit turns with respect to the vertical moving body, a predetermined amount of hydraulic oil can be supplied from the hydraulic supply source to each hydraulic drive device via the rotary joint without twisting the hydraulic supply hose and the like. .

[Brief description of the drawings]

FIG. 1 is a plan view of a segment erector device according to an embodiment of the present invention.

FIG. 2 is a side view of the segment erector device.

FIG. 3 is a front view of the segment erector device.

FIG. 4 is a sectional view taken along line IV-IV of FIG. 1;

FIG. 5 is a sectional view taken along line VV of FIG. 1;

FIG. 6 is a schematic sectional view of a shield excavator to which the segment erector device is applied.

FIG. 7 is a schematic view of a rectangular longitudinal section tunnel.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Excavator main body 12 Front torso 13 Rear torso 16a, 16b Cutter head 17a, 17b Drive motor 20 Shield jack 21 Elector device 25 Vertical moving body 29 Left and right moving body 32 Revolving body 37 Auxiliary moving body 40 First reversing body 43 Second reversing body 43 Body 47 Gripping jack (grip) A to H segment S Existing segment

Claims (3)

[Claims] 1. A segment erector device for assembling a segment carried into an existing tunnel to an inner wall surface of a tunnel, comprising: a vertical moving body movably supported at a rear portion of an excavator body along a vertical direction orthogonal to a digging direction. A horizontal moving body movably supported on the vertical moving body along a horizontal direction orthogonal to the excavation direction, and a revolving body rotatably supported on the horizontal moving body with an axis parallel to the excavation direction,
A first reversing body rotatably supported by the revolving body at a predetermined angle with an axis perpendicular to the excavation direction; and a first reversing body orthogonal to the excavation direction and at the rotation axis of the first reversing body. A segment elector device comprising: a second reversing body supported rotatably at a predetermined angle with an orthogonal axis; and a grip mounted on the second reversing body and capable of holding the segment. 2. The segment erector apparatus according to claim 1, wherein the revolving unit supports an auxiliary moving unit that is movable by a predetermined distance along a direction orthogonal to a digging direction, and the first reversing unit is supported by the auxiliary moving unit. A segment erector device wherein the body is rotatably supported. 3. The segment erector device according to claim 1, wherein a rotary joint as a hydraulic connection source of a hydraulic control circuit is provided between the vertical moving body and the revolving body. apparatus.