JPH06173600A - Segment conveyer - Google Patents

Abstract

PURPOSE:To make it possible to convey efficiently large-scaled and heavyweight central segments or central studs to a built-up position. CONSTITUTION:In a conveyer A constituted of a conveying platform 2 capable of advancing in the axial direction X of a tunnel in a multi-throw shield excavator having two or more throws and a receiving platform 7 on which wing segments or central studs on the conveying platform 2 are mounted, a falling down prevention guide mechanism G is provided to the conveying platform 2. A revolving mechanism R capable of changing positions of the wing segments or the central studs is provided to the receiving platform 7. The receiving platform 7 can be advanced traversely at right angles to the axial direction X of the tunnel up to a built-up position of the wing segments, and the central studs C can be erected in a raise-able manner.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a multi-shield shield machine having two or more stations, in which upper and lower segments (hereinafter also referred to as "wing segments") where left and right circular portions intersect with each other The present invention relates to a transfer device for intermediate pillars that are mutually connected and supported.

[0002]

2. Description of the Related Art In a shield machine having a composite cross section of two or more reams, the segment where the left and right circular parts intersect differs from the circular shape of the conventional segment, and is convex downward or convex upward. Because I am doing
At the time of assembly, an intermediate column for connecting the segments to each other at the central portion is required. Therefore, the wing segment and the intermediate column cannot be assembled by the functions of the conventional erector such as turning, extending and retracting, and front and rear slide. Originally, there are few records of shield excavators with a compound cross section of two or more stations, so in the past, the erector that assembles the central segment where the left and right circles intersect has been modified by modifying the conventional circular segment erector. is there.

On the other hand, in Japanese Patent Laid-Open No. 3-2499, a circular arc-shaped standard segment in a double shield excavator, vertical key segments (corresponding to wing segments) of a V-shaped cross section and a central portion are erected. A one-armed erector suitable for assembling a pillar segment (corresponding to an intermediate pillar) has been proposed.

[0004]

Since the conventional wing segment is light in weight, it has been possible to carry it to the assembly position and assemble it by expanding or contracting or sliding forward and backward of the conventional erector. In the multi-shield shield machine, the central segment becomes large and heavy, and the work space and function cannot be dealt with by the conventional modified type erector. In the conventional erector, gripping a heavy segment and laterally holding it for a longer span leads to an increase in the size of the machine, and a work space is also lost. Therefore, there is a need for a dedicated transfer device for transferring the wing segments and the like to a predetermined assembly position and an erector for assembling the transfer device.

In the conventional erector disclosed in Japanese Laid-Open Patent Publication No. 3-2499, since the work space is larger than that of the two-arm type because it is of the one-arm type, the handling of the large and heavy central wing segment is strong. It is difficult from a physical viewpoint.

In view of the above conventional problems, it is an object of the present invention to provide a segment transfer device which can efficiently transfer a large-sized and weighted central wing segment or an intermediate column to an assembly position.

[0007]

In order to achieve the above object, the present invention is capable of advancing in the axial direction of a tunnel in a multiple shield digging machine having two or more stations in which a wing segment and an intermediate column are assembled in a central portion. A carrier device comprising a carrier and a cradle on which a wing segment or an intermediate column is placed, the carrier being provided with a tipping prevention guide mechanism, and the wing being provided on the cradle. A rotation mechanism for changing the direction of the segment or the intermediate column is provided, and the pedestal can be traversed to the assembly position of the wing segment in the direction perpendicular to the axial direction of the tunnel, and the intermediate column can be erected upright. In the segment transfer device, the pedestal can be tilted up and down.

[0008]

In the carrying device having the above structure, the wing segment is received on the rear side of the shield machine, the direction of the wing segment is changed, and the wing segment is transferred (advanced) to the machine side in the tunnel axis direction. It can be moved (transverse) in the direction perpendicular to the tunnel axis and positioned at the assembly position, and then the wing segment can be gripped by the separately provided central assembly erector and installed at the upper and lower predetermined positions. .

Further, an intermediate column for connecting the wing segments installed above and below each other is transferred from the rear of the shield machine in a horizontal state in the tunnel axial direction and at a right angle, and the intermediate column is rotated for assembly. It can be moved up to the assembly position, and then moved to the assembly position.After that, the center pillar assembly erector provided separately adjusts the assembly position, and then the intermediate column is fastened to the vertically installed segments for assembly. it can.

The guide mechanism provided on the carrier table has the function of preventing the carrier device from falling due to displacement of the center of gravity due to the transfer of heavy objects when transferring the segments.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a segment conveying device according to the present invention will be described below with reference to the drawings. FIG. 1 is a partially omitted plan view of a double shield excavator equipped with a segment transfer device A of the present invention, FIG. 2 is a front view of the same, and FIGS. 3 to 8 show wing segment transfer steps over time. 9 is a plan view, and FIGS. 9 to 10 are operation explanatory views of the segment transfer device.
(a) ~ (d) is the transfer process diagram of the lower wing segment, Fig. 10 (a) ~ (d) is the transfer process diagram of the upper wing segment, Fig. 11 (a) ~ (g) is the transfer process diagram of the intermediate column Is.

As shown in FIGS. 1 and 2, on a guide rail 1 extending in the tunnel axis direction X, a carrier table 2 formed in a rectangular frame shape is provided. Forwarding actuators 3 are provided on both sides of the carrier table 2, and the carrier table 2 can be moved forward in the tunnel axis direction X by this extension operation. The central wing segment at multiple positions can be assembled by one movement of the forward stroke, and if the forward stroke becomes insufficient, a traction device provided from the shield machine M side when necessary (Fig. It is pulled by a not-shown), moved forward, and repositioned. Thus, the transport device A can be easily moved, and the positioning of the device does not require strict control.

A guide mechanism G is provided on the transfer table 2. That is, a guide arm 4 is additionally provided so as to project from the carrier table 2 to the center, and the guide arm 4 is engaged and gripped by a U-shaped guide bracket 5. The guide bracket 5 is attached to a column 6 standing upright in the center. The guide mechanism G prevents the carrier A from falling due to the displacement of the center of gravity due to the transfer of heavy objects on the carrier 2.

On the other hand, a cradle 7 having a rotating mechanism R is installed at the front of the carrier table 2, and the wing segment W placed on the cradle 2 by the operation of the rotating mechanism R (see FIG. 2) You can change the direction of 2 and the middle pillar.
The rotating mechanism R is composed of an external gear 8 and a drive pinion 9 that meshes with the external gear 8. The pedestal 7 is provided with a traverse actuator 11 so as to be able to traverse along a pair of guide members 10 extending toward the central portion, and
Actuating actuator 12 for erecting the intermediate pillar C
Is equipped with. Reference numeral 13 is a hinge for allowing the pedestal 7 to be tilted up and down. In FIGS. 1 and 2, 14 is a front surface (cutter disk) of the shield machine, 15 is a body part of the shield machine, 16 is a tail part, 17 is an erector for assembling a circular segment, and 18 is a central part assembly. Shows an erector for a car

The operation of the device of the present invention will now be described. 1) Equipment of the guide mechanism G As shown in FIG. 1, a plurality of U-shaped guide brackets 5 that fit into the guide arm 4 of the transfer device A are attached to the columns 6 with bolts. In this case, since the guide bracket 5 is also sequentially attached to the front supporting column 6 as the transporting device A moves forward, the fixing to the supporting column 6 is the minimum necessary and does not have to be permanently fixed. Guide arm 4 with a plurality of guide brackets 5
The guide mechanism G including the guide arm and the guide bracket can easily absorb the tipping moment when the segment moves forward (forward) and moves forward and laterally. 2) Reception and positioning of the upper and lower wing segments at the central intersection The wing segment W carried in by a segment carrying-in device (not shown) provided on the rear equipment side (Fig. 3) is received on the cradle 7 (Fig. 4). , FIG. 9 (a), FIG. 10 (a)
See). At this time, the longitudinal direction of the wing segment is parallel to the tunnel axis. Next, in order to change the direction of the segment, the rotation mechanism R is operated to rotate the pedestal 7 on the transport table 2 by 90 ° (see FIGS. 4, 9 (b) and 10 (b)). This action makes the longitudinal direction of the segment perpendicular to the tunnel axis (Fig. 5). As shown in FIG. 5, the forward movement actuator 3 is extended to a position right next to the wing segment assembly position, and the carrier table 2 is moved.
Forward (forward in the direction parallel to the tunnel axis). Next, the traverse actuator 11 of the pedestal 7 is operated to traverse the wing segment W to the segment assembly position (central portion) (FIG. 6, FIG. 9 (c), FIG. 10 (c)). The wing segment W is gripped by the central assembly erector 18 shown in FIG. 7, and the lower wing segment W is lowered (FIG. 9 (d)) and separately held by the fixed gripping arm. Further, the upper wing segment W is lifted up (FIG. 10 (d)) and similarly fixed by gripping. At this time, the traverse actuator 11 is shortened to return the cradle to its original position (FIG. 8). The lower or upper wing segment W is then gripped in place with the central assembly bracket 18 (FIG. 1).

After the upper and lower wing segments W are gripped at predetermined positions, the next intermediate pillar C is assembled between the upper and lower wing segments W in order to support and connect the upper and lower wing segments. 3) Receipt and positioning of the central intermediate column (see FIG. 11) The intermediate column C is received by the cradle 7 of the carrier A from the carry-in device provided on the rear equipment side (see (a)). At this time, the longitudinal direction of the intermediate column C is parallel to the tunnel axis. Next, the direction of the intermediate column C is set to 90 by operating the rotating mechanism R.
° Change so that the longitudinal direction of the intermediate column C is at right angles to the tunnel axis (Fig. (B)). Then, the advance actuator 3 (FIG. 5) is extended to advance the cradle 7 on which the intermediate column C is placed. Then, the raising / lowering actuator 12 (FIG. 1) is actuated to raise the receiving stand 7 by 90 ° on the conveying device A (FIG. (C)). By this operation, the intermediate column C is in the upright state which is the same as the assembled state. Next, the traverse actuator 11 (FIG. 1) is actuated to traverse the pedestal 7 to insert the intermediate column C between the existing upper and lower wing segments W, and bring it to the central assembly position (( d) Figure). After fastening the intermediate pillar C to the wing segment W at the center upper portion ((e) figure), the weight of the upper wing segment W and the intermediate pillar C is supported by the central assembly erector 18 (FIG. 1),
The cradle 7 is retracted (Fig. (F)). Then, the intermediate column C and the lower wing segment W are aligned and fastened ((g) figure).

4) Advancement of device When the forward stroke of the carrier device A becomes short of the segment assembly position after the wing segment W is assembled, the entire device is towed by a towing device to move forward, and the above 1) to Repeat 3).

[0018]

EFFECTS OF THE INVENTION In the conventional erector, gripping a heavy weight segment and laterally holding it for a longer span leads to an increase in the size of the machine and a working space is lost. By providing a transfer device for transferring the wing segment and the intermediate pillar to the erector, the work space becomes simpler and the working space becomes wider.

The transfer causes the displacement of the center of gravity of the upper object, and the installation and removal of the machine is prevented by providing a detachable guide on the existing intermediate column in order to prevent the displacement and the overturn of the mechanical device. It is possible to deal with the progress of excavation by moving the guide.

Since there is a segment receiving facility having functions of transfer and turning (direction change), conventionally, a hoist or the like can manually bring in to the central erector,
Dangerous work can be eliminated by eliminating the work of turning in the assembly direction.

Depending on the forward stroke of the carrier device, it is possible to assemble the central wing segment at a plurality of positions in a single movement of the device body. If the forward stroke of the transfer device becomes insufficient, it can be easily moved and repositioned by being pulled by the pulling device provided from the shield machine side to move forward and repositioned. No management required.

[Brief description of drawings]

FIG. 1 is a partially omitted plan view of a double shield excavator equipped with a segment transfer device of the present invention.

FIG. 2 is a front view seen from the rear.

FIG. 3 is a plan view (reception of segments) of the transport device showing the transport operation of the wing segments.

FIG. 4 is a plan view of the same (before changing the direction of a segment).

FIG. 5 is a plan view of the same (forward movement of the transport device).

FIG. 6 is a plan view (transverse movement of the pedestal).

FIG. 7 is a plan view of the same (holding by an erector for central assembly)
Is.

FIG. 8 is a plan view of the same (retraction of the pedestal).

9 (a) to 9 (d) are diagrams showing a process of transporting a lower wing segment.

10 (a) to 10 (d) are conveyance process diagrams of the upper wing segment.

11 (a) to 11 (g) are diagrams showing a process of transporting the intermediate column.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Guide rail 2 ... Conveyor stand 3 ... Forward movement actuator 4 ... Guide arm 5 ... Guide bracket 6 ... Strut 7 ... Receiving stand 11 ... Traverse actuator 12 ... Tilt-up actuator A ... Conveyor G ... Guide mechanism R ... Rotation mechanism W ... Wing segment C ... Intermediate pillar

Claims (1)

[Claims] 1. In a shielded excavator having two or more stations in which a wing segment and an intermediate column are assembled in the central portion, a carrier that can advance in the axial direction of the tunnel and a wing segment or an intermediate provided on the carrier. A carrier device having a pedestal on which a pillar is placed, and the carrier table is provided with a tipping prevention guide mechanism, and the pedestal is provided with a rotation mechanism capable of changing the direction of a wing segment or an intermediate pillar. It is characterized in that the pedestal can be traversed to the assembly position of the wing segment in the direction perpendicular to the axial direction of the tunnel, and the pedestal can be raised and lowered so that the intermediate column can be erected. Segment transfer device.