JP3060397B2 - Tunnel construction material transport system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transport system for transporting materials such as shield segments through a shaft to a tip end of a tunnel in tunnel construction.

[0002]

2. Description of the Related Art Conventionally, the following are known as a system for transporting shield segments (hereinafter, referred to as segments) in which a segment can be temporarily stocked in a transport route thereof. A stock rack is provided beside the lift in the shaft, and segments are transferred between the lift and the stock rack.
No. 00). A transport conveyor (roller conveyor) is provided at the tip of the shield tunnel during construction, and the segments transported by the transport trolley are transferred onto this transport conveyor one after another and stocked. Then, the segments are sequentially picked up from the transport end segment of the transport conveyor (see JP-A-4-333800).

[0003]

However, according to the above, since the transfer operation between the lift and the stock rack is performed in both directions, it takes a long time for the transfer operation. The space is reduced by the size of the conveyor.

[0004] By the way, while a lift is transported up and down in a shaft, a transport trolley is transported horizontally in a shield tunnel, and transport by a lift and transport by a transport trolley are generally performed independently of each other. When transferring the segments that have been lowered from the shaft to the transport trolley, a state occurs in which one of the lift and the transport trolley waits for the other operation, which often causes a reduction in the transport work efficiency.

Therefore, if a stock portion for stocking a segment is provided in the segment transfer route from the ground to the shield machine, the stock portion is secured between the lift and the transport vehicle as described above. This is advantageous not only from the viewpoint of the transport work efficiency, but also from the viewpoint of the efficiency of processing when a trouble occurs.

[0006] In view of the above, the present invention secures a stock portion between the lift and the transport vehicle, thereby improving the transport operation efficiency and the processing efficiency in the case of occurrence of a trouble as compared with the related art. An object is to enable efficient transfer from a lift to a transport trolley.

[0007]

SUMMARY OF THE INVENTION In a transfer system according to the present invention, an intermediate stock conveyor for transferring materials conveyed by a lift is provided in a lower part of a shaft, and the materials on the intermediate stock conveyor are transferred onto a transfer cart. And a transfer device for transferring the data to the computer. The transfer device includes a traverser, an actuator for moving the traverser forward and backward from within the transfer range of the intermediate stock conveyor to a position above the transfer carriage beyond the transfer end of the intermediate stock conveyor, and a traverser capable of moving up and down. The traverser is mounted and raised when the traverser is within the transfer range of the intermediate stock conveyor, so that the material is lifted and transferred from the intermediate stock conveyor, and is lowered when the traverser is advanced to a position above the transfer cart. Thus, the receiving base is configured to transfer the material to the transporting vehicle, and the actuator is configured to move the receiving base up and down.

[0008] Preferably, the intermediate stock conveyor comprises:
A plurality of sets of roller conveyors in which two rows of rollers are provided in parallel at a predetermined interval are arranged in series, and a transfer device is arranged between the last two rows of rollers.

[0009]

According to the transfer system of the present invention, the segments and the like lowered by the lift in the shaft can be transferred and stocked on the intermediate stock conveyor provided in the lower portion of the shaft. The stocked segments and the like can be transferred to the transport trolley at any time by the transfer device. At this time, since the vertically movable cradle is mounted on the traverser that moves back and forth, materials such as segments can be efficiently transferred from the intermediate stock conveyor onto the transport trolley.

If a roller conveyor composed of two rows of rollers is used as an intermediate stock conveyor, and a plurality of sets are arranged in series, and a transfer device is arranged between the last two rows of rollers, the curving device becomes curved. The plurality of segments can be stocked in a stable state, and even if the segments are curved, they can be efficiently transferred to the carrier by the transfer device.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings. FIG. 1 shows an overall schematic configuration of a transport system of this embodiment having a structure suitable for transporting segments. On the ground, a carry-in conveyor 2 for carrying the segment 1, a ground stock rack 3, and a stacker crane 4 for stacking the segments on the ground stock rack 3 are installed. In the shaft 5, a lift 6 and this lift 6
Are provided, and an intermediate stock conveyor 8 is provided in the lower part of the shaft 5.
A rail 11 for guiding a self-propelled carrier 10 is provided in the shield tunnel 9.
A tunnel tip stock conveyor 12 is provided movably along the rail 11 at the tip inside.

The segment 1 carried in from the ground carrying conveyor 2 is lowered in the shaft 5 by the lift 6 and can be stocked in an arbitrary stage of the shaft 7 in the shaft, and the stock for intermediate stock from the lift 6 can be stored. It can be reprinted on the conveyor 8 and stocked on the intermediate stock conveyor 8 as well.

FIG. 2 shows the side structure of the intermediate stock conveyor 8, and FIG. 3 shows the plan structure. Intermediate stock conveyor 8
Has a plurality of roller conveyors 13 arranged in series in the transport direction. Each set of roller conveyors 13
The roller rows 14 are arranged in parallel at a predetermined interval, and the segment 1 is placed in a state of straddling the roller rows 14.
To (D), the right set of roller conveyors 13
The rollers are sequentially transferred to and transported to the roller conveyor 13 on the left-hand side. The roller conveyor 1 at the left end in the figure is placed between the two roller rows 14 of the intermediate stock conveyor 8.
A transfer device 15 is provided for transferring the segment 1 on the carrier 3 onto the carrier 10. The roller conveyor 13 and the transfer device 15 are mounted on the same frame 16. In FIG. 4, reference numeral 17 denotes a pallet for transporting materials other than segments.

FIGS. 5 to 7 show a part of the roller conveyor 13 and the transfer device 15 in detail. Two roller rows 14
In order to match the curvature of the segment 1, 14 is mounted on a conveyor table 18, the upper surfaces of which are inclined in opposite directions, and the conveying surface of the two roller rows 14 is V-shaped. Each set of roller conveyors 13 is individually driven by a conveyor drive motor 19.

As shown in FIG. 5, the transfer device 15 includes two rails 2 provided between two rows of conveyor bases 18.
A traverser (traversing trolley) 21 running on 0.20;
This traverser 21 is advanced along the rails 20
Hydraulic cylinder 22 as an actuator for retracting
And a cradle 23 movably mounted on the traverser 21
And a plurality of hydraulic cylinders 24 which are actuators for moving the receiving table 23 up and down. Cradle 2
3 has a concave surface conforming to the curvature of the segment 1.

The transfer operation by the transfer device 15 is performed as follows. The traverser 21, as shown by a solid line in FIGS.
To the position retracted from the transfer end of
As shown in FIG. 6, reference numeral 3 is lower than the mounting surface of the roller conveyors 13 of the final set of conveyance by the two roller rows 14. In this state, when the pedestal 23 is raised by the plurality of hydraulic cylinders 24, the segments 1 on the roller conveyor 13 of the final set of conveyance are separated by the pedestal 23 into two roller rows 14, 14, as shown in FIG. It is lifted upward and transferred to the receiving stand 23. Therefore, when the traverser 21 is advanced by the fluid pressure cylinder 22 until the traverser 21 exceeds the transport end of the roller conveyor 13 of the final transport set as shown in a chain line in FIG. 3 and FIG. The traverser 21 is placed on the transporting carriage 10 that is waiting. At this time,
As shown in FIG. 8, the traverser 21 enters the concave portion of the carrier 10 from the side,
Is in a state of floating with respect to the raised segment base 10a on both sides of the concave portion of the transport vehicle 10. When the receiving table 23 is lowered from this state, the segments 1 are transferred from the receiving table 23 onto the segment bases 10 a on both sides of the transport vehicle 10. Thereafter, when the traverser 21 is retracted by the hydraulic cylinder 22, the traverser 21 returns to the original position.

The segment 1 thus transferred to the transport vehicle 10 is transported by the transport vehicle 10 to a position immediately before the conveyor 12 for stock at the end of the tunnel, and the hoist 2
5 and is transferred to the tunnel tip stock conveyor 12 and stocked on this conveyor 12. The tunnel tip stock conveyor 12 also has a plurality of sets of roller conveyors arranged in series similarly to the intermediate stock conveyor 8, and the segment 1 is moved to the left set of roller conveyors from the right set of roller conveyors in FIG. Are sequentially transferred and transported. Then, it is picked up and assembled by the automatic segment assembling device 26 from the roller conveyor of the final set of conveyance.

Although the case of transporting the segment 1 has been described, it goes without saying that the transport system according to the present invention can also transport materials other than the segment.

[0019]

As described above, according to the transport system of the present invention, the segments and the like lowered by the lift in the shaft are transferred to the intermediate stock conveyor provided in the lower part of the shaft and stocked. Therefore, the transfer work efficiency and the processing efficiency when a trouble occurs are improved as compared with the case of stocking on a stock rack beside a lift or a transfer conveyor at the tip of a tunnel. As a transfer device,
Since a traverser that moves back and forth and a receiving table that moves up and down is used, a curved segment can be efficiently transferred onto a transport trolley.

According to a second aspect of the present invention, a roller conveyor having two rows of rollers is used as an intermediate stock conveyor, and a plurality of sets are arranged in series, and a transfer device is provided between the last two rows of rollers. Is arranged, the curved segments can be stocked in a stable state, and even if the segments are curved, the segments can be efficiently transferred to the transport trolley by the transfer device.

According to the third aspect, in addition to the above-described effects, materials can be stocked in multiple stages in the shaft and on the ground.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of an entire transport system according to the present invention.

FIG. 2 is a side view of an intermediate stock conveyor and a transfer device in the transport system.

FIG. 3 is a plan view of the same.

FIG. 4 is a side view for explaining the transfer operation of the intermediate stock conveyor and the transfer operation of the transfer device.

FIG. 5 is an enlarged sectional view of a part of the intermediate stock conveyor and the transfer device.

FIG. 6 is a cross-sectional view when the transfer device is in a lift-down state.

FIG. 7 is a cross-sectional view when the transfer device is in a lift-up state.

FIG. 8 is a side view of the transport vehicle.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Segment 2 Carry-in conveyor 3 Above-ground stock rack 4 Stacker crane 5 Vertical shaft 6 Lift 7 Vertical shaft rack 8 Intermediate stock conveyor 9 Shield tunnel 10 Conveyor truck 11 Rail 12 Tunnel tip stock conveyor 13 Roller conveyor 14 Roller train 15 Transfer device 16 Frame 17 Pallet 18 Conveyor base 19 Conveyor drive motor 20 Rail 21 Traverser 22 Fluid pressure cylinder 23 Receiving stand 24 Fluid pressure cylinder 25 Hoist 26 Segment automatic assembly device

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) E21F 13/00 E21D 11/40

Claims (3)

(57) [Claims] 1. A tunneling material transport system for transporting materials such as shield segments by a lift provided in a shaft and a transport vehicle traveling in a tunnel, wherein the lift is transported to a lower portion of the shaft by the lift. An intermediate stock conveyor that transfers the material that has been transferred, and a transfer device that transfers the material on the intermediate stock conveyor onto the transport trolley. The transfer device includes a traverser and an intermediate traverser. An actuator that moves forward and backward from within the transport range of the stock conveyor to the position above the transport trolley beyond the transport end of the intermediate stock conveyor, and is mounted on the traverser so as to be vertically movable, and the traverser is transported by the intermediate stock conveyor. Lifted when it is inside, lifts the material from the intermediate stock conveyor and reprints it A tunnel configured to lower the traverser when the traverser is advanced to a position above the carrier, to transfer the material to the carrier, and an actuator for moving the carrier up and down. Construction material transport system. 2. The intermediate stock conveyor is constituted by arranging a plurality of sets of roller conveyors in which two rows of rollers are provided in parallel at a predetermined interval in series. 2. The transport system for tunnel construction materials according to claim 1, wherein a transfer device is disposed between the tunnel construction materials. 3. The transport system for tunnel construction materials according to claim 1, wherein racks for stocking the materials are arranged in the shaft and on the ground, respectively.