JPH1018790A - Segment conveying feeder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve workability by supporting segments in multiple stages on a segment conveying truck in a tunnel, and delivering the segments piece by piece by a delivery roller to feed them to a segment erector device. SOLUTION: A conveying frame 35 is movably supported on a rail in a tunnel. The conveying frame 35 is provided with vertically movable holding claws 36, 37 for supporting segments A-H in multiple stages, and a delivery roller 38 for delivering the segment A-H to an erector device 23. The conveying frame 35 can convey a plurality of segments A-H in the loaded state into the existing tunnel and delivery the loaded segments A-H onto the erector device 23 side. Grip mechanism 52 is mounted to the tip of a rotating arm 46 extended from a supply frame 43 to the erector device 23 side. The segments A-H can thereby be fed being reversed and erected.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a segment transport device for mounting a plurality of segments and carrying them into an existing tunnel, a segment supply device for supplying the segments carried into the existing tunnel to a segment assembling device, and The present invention relates to a segment transport supply device.

[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, while rotating the cutter head mounted on the front part of the excavator body, extending the shield jack and pressing it against the existing segment S, the excavator body moves forward while receiving the pressing reaction force, and 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 a rectangular vertical section tunnel as shown in FIG. 9, the shape of the segment to be assembled on the inner wall surface of the tunnel after excavation also conforms to this tunnel section shape. You need a kind of thing. Generally, when loading a segment into an existing tunnel, the segment is suspended by a hoist and moved in the existing tunnel, or a large number of segments are stacked on a segment carrier and mounted on the existing tunnel. This was done by moving along the laid rails.

[0004]

[0009] However, in the above-described rectangular vertical section tunnel shown in FIG. 9, the width of the existing tunnel is narrow, while the eight types of segments are long because the number of divided segments is small. It has become. for that reason,
The segment cannot be loaded in a horizontal and horizontal state so as to match the assembly direction, and must be loaded in a state parallel to the loading direction. Therefore, when transferring the segment from the segment carrier to the erector device, the operator must change the direction of the segment by using a predetermined device, and the work is performed in a narrow space. There is a problem that it takes a long time.

[0005] In a rectangular vertical section tunnel, the height is not sufficient due to the two beams G and H assembled inside, and a hoist cannot be installed. Cannot be stacked and transported. And in this case, the segments are A ~
The eight types of H have different shapes, and the order of assembly is determined. For this reason, the segment carrier has to carry the segments one by one and is carried in, and the workability is not good.

SUMMARY OF THE INVENTION The present invention has been made to solve such a problem, and a segment transfer device, a segment supply device, and a device for reducing the burden on an operator to improve safety and operability. It is another object of the present invention to provide a segment transport / supply device.

[0007]

According to a first aspect of the present invention, there is provided a segment transporting apparatus for loading a plurality of segments into an existing tunnel. A transport frame movably supported by rails disposed along the longitudinal direction, segment support means provided in the transport frame in multiple stages up and down, supported movably up and down, and capable of supporting the segment, And a segment sending means for sending the segment supported by the segment supporting means to the segment assembling apparatus side.

Therefore, a plurality of segments are mounted on the transport frame in multiple stages by means of segment support means, and the transport frame moves on rails provided along the longitudinal direction in the existing tunnel, so that a plurality of segments are provided. Is carried into the existing tunnel, and then the segment supported by the segment supporting means is moved up and down to be passed to the segment sending means, and the segment is sent out to the segment assembling apparatus side by the segment sending means. .

A segment supply device according to the present invention is a segment supply device for supplying a plurality of segments carried into an existing tunnel by a segment carrier to a segment assembling device one piece at a time in a longitudinal direction of the existing tunnel. A supply frame movably supported by rails disposed along the same; segment sending means for sending the segments sent out from the segment carrier to the segment assembler side by one piece; A rotating arm having a distal end mounted on the frame and extending to the segment assembling apparatus side and supported to be vertically rotatable; and a rotary arm mounted on the distal end of the rotating arm to grip the segment. And segment holding means.

Therefore, the plurality of segments carried into the existing tunnel by the segment transport cart are sent out piece by piece to the segment assembling apparatus side by the segment sending means, and the segment gripping means attached to the tip of the rotary arm is provided. The segment was gripped, and in this state, the supply frame moved on a rail arranged along the longitudinal direction of the existing tunnel, approached the segment assembling device, and gripped by rotating the rotating arm up and down. The segments are erected and supplied to the segment assembling device.

[0011] Further, the segment transport supply apparatus of the present invention is a segment transport in which a plurality of segments are mounted in upper and lower stages and loaded into an existing tunnel, and the loaded segments are sent out one piece at a time to the segment assembling apparatus side. Means for receiving the segment sent out by the segment conveying means, grasping a predetermined location, inverting the segment from a horizontal state to an upright state, and supplying the segment to the segment assembling apparatus. It is assumed that.

Therefore, a plurality of segments are mounted in the upper and lower tiers by the segment conveying means and are carried into the existing tunnel, and the segments mounted at the predetermined positions are sent out one piece at a time in a horizontal state. The received segment is gripped at a predetermined position, the segment is inverted from a horizontal state to an upright state in this state, and supplied to a segment assembling apparatus.

[0013]

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

FIG. 1 is a longitudinal sectional view of a shield excavator to which a segment transport / supply device according to an embodiment of the present invention is applied.
FIG. 2 is a plan view of the shield excavator, and FIG.
FIG. 4 is a sectional view taken along line IV-IV of FIG. 1, and FIGS.

As shown in FIGS. 1 and 2, in a shielded excavator, an excavator body 11 is formed by fitting a cylindrical front body 12 and a rear body 13 to each other with a seal member 14 so as to be movable back and forth. Have been. The front body 12 is formed of three rectangular cylinders 12a, 12b, and 12c, which are arranged side by side in a vertical direction substantially orthogonal to the excavation direction, and are relatively movable in the excavation left and right directions. It is supported by a guide member 15 fixed to the front part. A fixed jack 16 is provided between each of the front bodies 12a, 12b, and 12c. In addition, cutter heads 17a, 17b, and 17c are respectively rotatably mounted on front portions of the respective bodies 12a, 12b, and 12c of the front body 12, and can be driven and rotated by drive motors. Furthermore, each body 12a, 12
b, 12c and the rear trunk 13, a plurality of attitude jacks 1
8 are erected.

A chamber 19 is formed in the front part of the front body 12 for taking in soil such as earth and sand excavated by the cutter heads 17a, 17b and 17c. The front part of the screw conveyor 20 arranged in the inside 11 is open, and the rear end part of the screw conveyor 20 extends to a soil treatment facility (not shown). A plurality of shield jacks 21 are arranged side by side in the circumferential direction at the rear part of the rear trunk 13 and
An erector device 23 for assembling the segments A to H is provided on a support wall 22 fixed to the rear of the vehicle.

Behind the shield excavator thus constructed in the direction of excavation, rails 24 are provided along a longitudinal direction on a number of beams (G, H) installed in the existing tunnel. A plurality of segments A to H are mounted on the rail 24, and the segments A to H are installed in the existing tunnel.
H, and a plurality of segments A to H, which are carried into the existing tunnel by the segment carrying device 31, one piece at a time.
And a segment supply device 41 for supplying the same to the apparatus.

The segment transport device 31 is shown in FIGS.
As shown in FIG. 2, a pair of front and rear transport vehicles 32, 33 are connected, and each transport vehicle 32, 33 has substantially the same configuration, is equipped with segments A to H for one ring, and is driven by a driving device (not shown). You can run by yourself. That is, each of the transport vehicles 32 and 33 is a transport frame 35 movably supported on the rail 24 by a plurality of wheels 34.
The transport frame 35 has a plurality of upper openings, and both sides are formed by a plurality of vertical fences. A plurality of holding claws 36, 37 as segment support means for holding the front, rear, left and right of each of the segments A to H are provided on the transport frame 35 in two upper and lower stages, and the holding claws 36, 37 of each stage are provided. Is openable and closable by a driving device (not shown), and is movable up and down. The transport frame 35 is provided with a plurality of delivery rollers 38 as segment delivery means for delivering each of the segments A to H forward in the excavation direction. The plurality of delivery rollers 38 are mounted below the plurality of holding claws 36 and 37, can be rotationally driven by a driving device (not shown), and can hold the positions of the segments A to H by the holding projections 39.

On the other hand, as shown in FIG. 1 and FIG.
4, a supply frame 43 movably supported on the supply frame 43. The supply frame 43 has a gate shape, and a plurality of delivery rollers as segment delivery means for delivering each of the segments A to H forward in the excavation direction. 44 are provided. A moving frame 45 is mounted on the supply frame 43 so as to be movable back and forth. A base end of a rotating arm 46 is pivotally attached to the moving frame 45 by a rotating shaft 47, and is vertically moved by a rotating jack 48. It can rotate. The rotating arm 46 extends forward in the digging direction,
Reversing frame 49 into which segments A to H fit at the tip
Are pivotally connected by a rotation shaft 50 and can be rotated by a reversing jack 51. A gripping mechanism 52 as segment gripping means capable of gripping the segments A to H is mounted on the reversing frame 49,
A stopper 53 that defines the front end positions of the segments A to H to be gripped is attached to the distal end. The stopper 53 can be adjusted in the front-rear position.
Since the sizes of H are different, the segments A to H are always held so that the gripping mechanism 52 can always hold the center of the segments A to H.
Adjust according to the size of H.

Here, a description will be given of a tunnel construction method using the shield excavator of the present embodiment configured as described above. As shown in FIGS. 1 and 2, when all the shield jacks 21 are extended while rotating the cutter heads 17 a, 17 b, and 17 c by the drive motor, the excavator body including the front body 12 and the rear body 13 is formed. Numeral 11 advances by the reaction force from the existing segment S, and the cutter heads 17a, 17b, 17c excavate the ground in front to excavate a tunnel having a rectangular cross section.

On the other hand, in the segment conveying device 31,
Segments A to H for one ring are transport carriers 32 and 33, respectively.
Holding claws 36 and 37 and holding projections 39
Are held at each stage. In this state, the transporting vehicles 32 and 33 move along the rails 24 in the existing tunnel to carry in the loaded segments A to H.
When the carriages 32 and 33 approach the segment supply device 41 on the rail 24, the movement is stopped, a plurality of delivery rollers 38 are operated, and first, the lower segment C is delivered to the segment supply device 41. .

In the segment supply device 41, the transport vehicle 3
The plurality of delivery rollers 44 receive the segment C sent out from 2, and send it forward as it is through the supply frame 43. Then, segment C is inverted frame 4
9, the front and rear positions thereof are defined by contacting the stopper 53,
It is gripped by the gripping mechanism 52. Thereafter, as shown in detail in FIG. 5, the segment supply device 41 moves forward in a segment gripping state and stops at a position slightly before the front end of the rail 24. Here, the segment supply device 41
First, as shown in FIG. 6, by extending the reversing jack 51 by a half stroke, the segment C gripped together with the reversing frame 49 is rotated counterclockwise in FIG.
Incline. Next, as shown in FIG. 7, by extending the rotary jack 48, the segment C is rotated while avoiding contact between the segment C and the beam H via the rotary arm 46. Then, as shown in FIG. 8 again, by extending the reversing jack 51 by the full stroke, the segment C gripped together with the reversing frame 49 is rotated counterclockwise in FIG. Finally, the segment supply device 41 moves forward in the segment standing gripping state,
As shown by a two-dot chain line in FIG. 8, the rail 24 stops at the front end position. As shown in FIG. 1, the erector device 23 receives the segment C held by the segment supply device 41 in an upright gripping state.

In the segment conveying device 31, FIG.
As shown in FIG. 3, after the lower segment C is sent out to the segment supply device 41 by the sending roller 38, the segment B held by the holding claw 37 is then lowered and put on the sending roller 38, The delivery roller 38 delivers the segment B to the segment supply device 41. In this way, the transport vehicles 32 and 33 send the mounted segments A to H to the segment supply device 41 in the order of C, B, A, D, E, F, and GH.

Then, the segment B gripped by the elector device 23 is mounted in a space between the shield jack 21 and the existing segment S formed by contracting one shield jack 21. By this repetition, the tunnel is constructed by assembling the segments A to H grasped on the inner wall surface of the existing tunnel by the erector device 23.

As described above, the transport carts 32 and 33 of the segment transport apparatus 31 can carry the segments A to H on each stage and carry them into the existing tunnel.
To H can be sent to the segment supply device 41 in a predetermined order. On the other hand, the segment supply device 41 can receive the segments A to H one by one in a horizontal state, invert them into a predetermined space, and supply them to the erector device 23 in an upright state. Therefore, when a tunnel is constructed, the erector device 23 can receive and assemble the segments A to H in a predetermined order.

[0026]

As described above in detail in the embodiment, according to the segment transport device of the present invention, the transport frame is movably supported on the rails disposed along the longitudinal direction of the existing tunnel, The transport frame is provided with a plurality of vertical stages, and is provided with a segment supporting means which is supported movably up and down and which can support the segments, and a segment sending means which sends out the segments supported by the segment supporting means to the segment assembling apparatus side. So
The transport frame can be loaded into the existing tunnel with a plurality of segments mounted thereon, and the mounted segments can be sequentially sent out to the segment assembling apparatus side, thereby improving workability.

Further, according to the segment supply device of the present invention, the supply frame is movably supported by the rails arranged along the longitudinal direction of the existing tunnel, and the segments sent out from the segment carrier are separated by one piece. A segment sending means for sending out to the segment assembling device side is provided, and a turning arm extending from the supply frame to the segment assembling device side and rotatable up and down is provided, and a segment is gripped at the tip of the turning arm. Since a possible segment gripping means is mounted, a plurality of segments carried into the existing tunnel are gripped one by one and approached to the segment assembling apparatus, where the segments are turned upside down and supplied to the segment assembling apparatus. Therefore, the burden on the worker can be reduced and safety can be improved.

Further, according to the segment conveying / supplying device of the present invention, a plurality of segments are mounted in the upper and lower stages and carried into the existing tunnel, and the mounted segments are sent out one piece at a time to the segment assembling device side. Since the segment conveying means and the segment feeding means for receiving the segment sent out by the segment conveying means, grasping a predetermined location, inverting the segment from the horizontal state to the upright state, and supplying the segment to the segment assembling apparatus are provided, A plurality of segments are carried into the existing tunnel, and the segments are sent out one piece at a predetermined position in a horizontal state, and the sent out segments are inverted from a horizontal state to an upright state and supplied to a segment assembling apparatus.
The burden on the worker can be reduced, safety can be improved, and workability can be improved.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a shield excavator to which a segment transport / supply device according to an embodiment of the present invention is applied.

FIG. 2 is a plan view of the shield excavator.

FIG. 3 is a sectional view taken along the line III-III of FIG. 1;

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

FIG. 5 is an operation explanatory view of the segment supply device.

FIG. 6 is an operation explanatory view of the segment supply device.

FIG. 7 is a diagram illustrating the operation of the segment supply device.

FIG. 8 is a diagram illustrating the operation of the segment supply device.

FIG. 9 is a schematic view of a rectangular longitudinal section tunnel.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Excavator main body 12 Front trunk 13 Rear trunk 17a, 17b, 17c Cutter head 21 Shield jack 23 Electr device 31 Segment transport device 32, 33 Transport truck 35 Transport frame 36, 37 Holding claw (segment support means) 38 Sending roller ( Segment sending means) 41 segment supply device 43 supply frame 44 sending roller (segment sending means) 46 rotating arm 49 reversing frame 52 holding mechanism (segment holding means) 53 stopper A to H segment

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Michio Furui 1-1-1, Wadasaki-cho, Hyogo-ku, Kobe-shi, Hyogo Mitsubishi Heavy Industries, Ltd. No. 25-1, Taisei Construction Co., Ltd. (72) Inventor Osamu Mochizuki 1-25-1, Nishi-Shinjuku, Shinjuku-ku, Tokyo Inside Taisei Construction Co., Ltd. No. 1 Taisei Construction Co., Ltd.

Claims (3)

[Claims] 1. A segment transport device for loading a plurality of segments into an existing tunnel and loading the segments into an existing tunnel, comprising: a transport frame movably supported by rails disposed along a longitudinal direction of the existing tunnel. Segment support means which is provided on the transport frame in upper and lower stages so as to be vertically movable and capable of supporting the segment, and segment sending means for sending the segment supported by the segment support means to the segment assembling apparatus side A segment transport device comprising: 2. A segment supply device for supplying a plurality of segments carried into an existing tunnel by a segment transport vehicle to a segment assembling device one piece at a time, wherein a rail provided along a longitudinal direction of the existing tunnel is provided. A supply frame movably supported, segment sending means for sending out the segments sent from the segment carrier to the segment assembling apparatus side by piece, and a tip end having a base end attached to the supply frame. A rotating arm extending to the segment assembling apparatus and supported to be rotatable up and down; and a segment gripping means mounted on a tip end of the rotating arm and capable of gripping the segment. A segment supply device characterized by the above-mentioned. 3. A segment conveying means for loading a plurality of segments in upper and lower stages and carrying them into an existing tunnel, and sending the mounted segments one piece at a time in a horizontal state to a segment assembling apparatus side; A segment feeding means for receiving the segment, gripping a predetermined portion, inverting the segment from a horizontal state to an upright state, and supplying the segment to the segment assembling apparatus.