JP2004204537A - Underground carrying-in device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an underground carrying-in device capable of shortening a construction period by shortening a material charging cycle. <P>SOLUTION: This underground carrying-in device is provided with a vertical conveying device 4 for taking material S down to an underground space 2 from the ground 3; a plurality of material conveying lines L1, L2 formed in the underground space 2; a traverser 5 for moving the material S taken down by the vertical conveying device 4, on either one of the plurality of material conveying lines L1, L2; and a conveying truck 6 for conveying the material S along the material conveying lines L1, L2. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an underground carry-in device for carrying materials into an underground space such as an underground tunnel excavation site.
[0002]
[Prior art]
For example, when performing an underground tunnel excavation work using a shield excavator, each material such as segments, rails, sleepers, piping, etc. is lowered from the ground to an underground space along a shaft, and the material is placed at a predetermined location along a tunnel excavation line. An underground loading device is required to transport to the underground. For example, Non-Patent Documents 1 and 2 disclose examples of underground loading devices.
[0003]
[Non-patent document 1]
Morikita, Kinoshita, Imai, "Construction of the Kasumigaura Headrace Business Naka Headrace", Civil Engineering, Vol. 50, No. 11, p. 33-40
[Non-patent document 2]
Kurokawa, Yoshida, Mukono, Takimoto, "Newly Developed Segment with Improved Lining Quality and Construction Speed-Fourth Section of Outer Floodway in Metropolitan Area-", Tunnel and Underground, June 2002 [0004]
[Problems to be solved by the invention]
By the way, it may not be possible to provide a shaft directly above the tunnel excavation line in the city center or the like. For example, when a main road exists directly above a tunnel excavation line, it is necessary to construct a shaft while avoiding the road due to traffic conditions and the like. In such a case, it is necessary to move the material dropped to the lower part of the shaft to the tunnel excavation line (that is, the material transport line).
[0005]
In recent years, a plurality of tunnels may be excavated from the lower part of one shaft, and in this case, each material lowered to the lower part of the shaft needs to be moved to an excavation line (material conveying line) of each tunnel.
[0006]
In the conventional underground loading apparatus, when the material dropped to the lower part of the shaft is moved to the material transport line, the material is temporarily placed in an underground space using a hoist or the like, and then moved to a predetermined material transport line. As a result, the material input cycle became longer, leading to a longer construction period.
[0007]
As another problem, there is a case where the opening space of the shaft cannot be made large due to various circumstances in a city center or the like. Conventionally, when materials are dropped from the ground to the lower part of the shaft, for example, as described in Non-Patent Document 1, it is common to install an elevator device in the shaft, but if the opening space of the shaft is small, the elevator If the device breaks down, the device blocks the shaft, so that no material can be imported. As a result, until the repair of the elevator device is completed, the tunnel excavation work itself has to be stopped, which has led to a longer construction period.
[0008]
Then, an object of the present invention is to solve the above-mentioned problems, and to provide an underground carry-in device capable of shortening a material charging cycle and shortening a construction period.
[0009]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a vertical transport device for lowering a material from the ground to an underground space, a plurality of material transport lines formed in the underground space, and the material lowered by the vertical transport device. A traverser for moving the material on any one of the plurality of material transport lines; and a transport trolley for transporting the material along the material transport line.
[0010]
Here, the material transport line is formed by branching off the main line and the main line for transporting the material, and when one transport trolley is transporting the material along the main line, the other is It is preferable to provide a standby line on which the transport vehicle waits.
[0011]
Further, it is preferable that the vertical transport device is formed of a crane.
[0012]
Further, the present invention is an underground loading device for loading materials along a plurality of tunnel excavation lines continuous to the lower part of the shaft, a vertical transport device for lowering the materials from the ground side of the shaft to the lower part of the shaft, A material transport line extending along each of the tunnel excavation lines, a traverser for moving the material unloaded by the vertical transport device onto any one of a plurality of material transport lines, and the material A plurality of transport vehicles for transporting the material along the material transport line, wherein the material transport line is formed by branching off the main line for transporting the material and the main line, and one transport vehicle is provided on the main line. And a standby line for another transport trolley to wait while the material is being transported along.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.
[0014]
First, an overall configuration of the underground loading device of the present embodiment will be described with reference to FIGS.
[0015]
The underground loading device according to the present embodiment includes a segment, a rail, and a sleeper from the ground 3 side at a tunnel construction site where two tunnels T1 and T2 are excavated by a shield excavator from an underground space 2 formed under one shaft 1. Is transported to a predetermined location along the longitudinal direction (material transport line) of each of the tunnels T1 and T2.
[0016]
The material S is lowered into the underground space 2 from the shaft opening 1a located immediately above the tunnel T1, and then moved in a direction (horizontal direction in FIG. 1) orthogonal to the longitudinal direction of the tunnels T1 and T2. It is located on the transport line.
[0017]
The underground carry-in device includes a vertical transport device 4 for vertically lowering the material S from the ground 3 side along the shaft 1 and carrying the material S into the underground space 2, and a tunnel T1, T2 for transporting the material S carried by the vertical transport device 4. And a transport trolley 6 for transporting the material S to a predetermined location along the material transport line.
[0018]
The vertical transport device 4 will be described with reference to FIGS. FIG. 3 is a front view of the vertical transport device 4, and FIG. 4 is a side view showing only the traveling crane 7 of the vertical transport device 4.
[0019]
The vertical transport device 4 includes a traveling crane 7 movably provided on the ground 3 and an overhead crane 8 provided outside the traveling crane 7. The traveling crane 7 includes a portal frame 10 traveling on a pair of rails 9, 9 provided on both sides of the shaft opening 1 a, a traveling section 11 provided movably on the portal frame 10, and traveling And a gripper 12 that is attached to the part 11 so as to be able to move up and down and that grips the material S. The traveling unit 11 travels in a direction (left-right direction in FIG. 3) orthogonal to the rails 9, 9. The grip 12 is attached to the traveling unit 11 via a reel 13 and a wire 14. The gripper 12 is raised by rotating the reel 13 to wind up the wire 14 by a driving means such as a motor (not shown), and the gripper 12 is lowered by rotating the reel 13 in the reverse direction and releasing the wire 14 from the reel 13. I do.
[0020]
The overhead crane 8 includes a traveling girder 21 provided in a soundproof house 15 provided so as to straddle the traveling crane 7, a traversing part 16 moving on the traveling girder 21, a reel 17 and a wire for the traversing part 16. And a hook 19 that is provided to be able to move up and down through the intermediary 18. The hook 19 can be moved up and down by rotating the reel 17 with a driving device such as a motor (not shown).
[0021]
In the vertical transport device 4, the material S transported by the truck V is transferred to the temporary material storage 20 by the overhead crane 8, and the material S placed in the temporary material storage 20 is gripped by the gripper 12 of the traveling crane 7. It is carried into the underground space 2 from the shaft opening 1a. In this vertical transport device 4, even if the traveling crane 7 breaks down, if the traveling crane 7 is moved, the shaft opening 1a will not be closed. Accordingly, the introduction of the new traveling crane 7 allows the carrying in of the material S to be continued. Therefore, it is not necessary to interrupt the tunnel excavation work itself by the shield machine, and the construction period can be shortened. Further, in this embodiment, since the vertical transport device 4 includes the overhead crane 8, when the traveling crane 7 breaks down, the overhead crane 8 can be used instead.
[0022]
The gripper 12 of the ground traveling crane 7 will be described with reference to FIGS.
[0023]
The grip 12 includes a base 22 attached to the lower end of the wire 14, and a pair of forks 23, 23 attached to the lower side of the base 22 for gripping the material S. As shown in FIG. 6, the upper portions of both forks 23 are screwed to a shaft 24 having oppositely threaded threads on both sides, and the fork is rotated by rotating the shaft 24 by a driving device 25 such as a motor. 23, 23 can be changed. By changing the interval between the forks 23, materials S of various sizes and shapes can be gripped. The forks 23, 23 are provided at a substantially central portion of the base 22 so as to be freely rotatable (rotatably). By turning the forks 23, 23, the direction of the material S gripped between the forks 23, 23 can be appropriately changed.
[0024]
Positioning guides 26 that engage with positioning guides 39 of the traversing floor 35 of the traverser 5 to be described later and guide the material S to an appropriate position are provided at four positions on the front, rear, left and right of the base 22.
[0025]
The traverser 5 and the transport vehicle 6 will be described with reference to FIGS.
[0026]
7 and 10, L1 is a first material transfer line extending in the longitudinal direction of the tunnel T1, and L2 is a second material transfer line extending in the longitudinal direction of the tunnel T2. The first and second material transfer lines L1 and L2 have rails 30 and 31 on which the transfer carriage 6 can travel. As will be described in detail later, each of the rails 30 and 31 includes main rails 30a and 31a and standby rails 30b and 31b.
[0027]
As shown in FIG. 7, the traverser 5 extends from the loading position 32 of the material S by the traveling crane 7 of the vertical transport device 4 in a direction orthogonal to the material transport lines L1 and L2, and transports the first and second materials. The vehicle includes a traversing groove 33 connecting the lines L1 and L2, and a traversing floor 35 running along a rail 34 formed on the traversing groove 33 along the longitudinal direction. In the present embodiment, the loading position 32 of the material S by the traveling crane 7 is located on an extension of the main rail 30a of the first material transport line L1.
[0028]
The upper surface of the traversing floor 35 has the same height as the floor surface of the material transport lines L1, L2, and rails 36 having the same shape as the rails 30a, 30b, 31a, 31b of the material transport lines L1, L2 are provided thereon. .
[0029]
The traversing floor 35 is configured to be able to stop at four positions P1, P2, P3, P4 located on the extension of each rail 30a, 30b, 31a, 31b of the first and second material transfer lines L1, L2. . Specifically, positioning pins 37 are provided at both ends in the front-rear direction (vertical direction in FIG. 7) of the traversing floor 35 so as to be freely retractable. A positioning hole 38 that can be engaged with the positioning pin 37 is formed at a corresponding position. The traversing floor 35 can be driven by a driving device such as a motor, and when the traversing floor 35 is located at any of the four positions P1, P2, P3, and P4, the positioning pins 37 advance outward to position the positioning holes 38. Engage with. Thereby, the traversing floor 35 is positioned. When the traversing floor 35 is at a position other than the four positions P1, P2, P3, and P4, the positioning pins 37 are pushed by the side walls of the traversing groove 33 and are retracted.
[0030]
When the material S is carried in by the traveling crane 7, the traversing floor 35 is located at the first position P <b> 1 and receives the material S dropped to the carry-in position 32. As shown in FIG. 8 and FIG. 9, positioning guides 39 are provided at four positions on the traversing floor 35 at front, rear, left and right. When the grip portion 12 of the traveling crane 7 and the material S gripped by the crane 7 are lowered to the carry-in position 32, the positioning guides 26 of the grip portion 12 (see FIGS. 5 and 6) and the positioning guide 39 of the traversing floor 35 engage. In addition, the material S is guided to an appropriate position.
[0031]
When the material S dropped to the loading position 32 by the traveling crane 7 is to be transported along the first material transport line L1, the traversing floor 35 is located at the first position P1 even after receiving the material S. On the other hand, when the material S is to be transported along the second material transport line L2, the traversing floor 35 moves from the first position P1 to the fourth position located on an extension of the main line 31a of the second material transport line L2. Move to P4. The case where the traversing floor 35 moves to the second and third positions P2 and P3 will be described later.
[0032]
The transport trolley 6 includes a loading trolley 40 for loading the materials S, and a drive trolley (self-propelled trolley) 41 configured to be connectable to the loading trolley 40 and to make the loading trolley 40 travel. When the material S is carried in by the traveling crane 7, the loading carriage 40 of the transport carriage 6 moves onto the horizontal floor 35 located at the first position P <b> 1 and is located at the carry-in position 32. Therefore, the material S is loaded on the loading cart 40. As shown in FIG. 9, a wheel clasp 42 is provided on the upper surface of the traversing floor 35 so as to be able to move up and down. When the material S is loaded on the loading truck 40, the wheel clasp 42 stands up and the loading truck 40 Can be fixed.
[0033]
When the material S loaded on the loading truck 40 is to be transported along the second material transport line L2, after the material S is loaded on the loading truck 40, the traversing floor 35 of the traverser 5 is moved to the fourth position. It moves to the position P4, but at this time, the connection between the driving trolley 41 and the loading trolley 40 is released. When the traversing floor 35 is located at an appropriate position (the first position P1 or the fourth position P4), the loading truck 40 and the driving truck 41 are connected, and the loading truck 40 and the material S are moved by the driving truck 41 to the first or fourth position. The material is transported to a predetermined location along the main rails 30a and 31a of the second material transport lines L1 and L2. Of course, at this time, the wheel stopper 42 on the traversing floor 35 is lowered.
[0034]
As shown in FIG. 10, each of the material transport lines L1 and L2 includes main rails (main lines) 30a and 31a, and standby rails (standby) that branch off from the main rails 30a and 31a and extend to the transverse grooves 33 of the traverser 5. Line) 30b, 31b, and a plurality (two in this case) of transport carts 6 are provided on each of the material transport lines L1, L2. As a result, the charging cycle of the material S can be shortened. That is, while one of the transport carts 6 receives the material S at the material loading position 32 and travels along the main rails 30a and 31a, the other transport that has transported the previously loaded material S to a predetermined location and returned to the other location. The carriage 6 can wait on the standby rails 30b and 31b. If one of the transport vehicles 6 has loaded the material S and has moved forward (to the left in FIG. 10) from the standby rails 30b and 31b, the other transport vehicle 6 that has been waiting is moved to the main rails 30a and 31a. Return to Therefore, carrying-in by the traveling crane 7 can be executed immediately. In other words, by alternately repeating material reception → material transportation → standby by the two transportation carts 6, the material S loading cycle can be shortened.
[0035]
As shown in FIG. 7, since the traversing floor 35 of the traverser 5 can be stopped at the second and third positions P2 and P3 located on the extension of the standby rails 30b and 31b, it stands by on the standby rails 30b and 31b. The loading vehicle 40 of the transporting vehicle 6 can be moved to the carry-in position 32 by the traversing floor 35. That is, the traversing floor 35 moves to the second or third position P2, P3, and the loading trolley 40 of the transport trolley 6 waiting on the standby rails 30b, 31b is moved to the traversing floor 35. Thereafter, the connection between the loading cart 40 and the driving cart 41 is released, and the traversing floor 35 moves to the first position P1. As a result, the loading cart 40 can be moved to the loading position 32, and preparation for receiving the next material S is completed. The drive cart 41 moves by itself and returns to the main rails 30a and 31a.
[0036]
A method for carrying the material S by the underground carrying device will be described.
[0037]
First, the material S temporarily placed in the temporary material storage area 20 on the ground 3 is gripped by the gripping portion 12 of the traveling crane 7, and lowered from the shaft opening 1 a to the loading position 32 of the underground space 2. At this time, the operator instructs the material transport lines L1 and L2 to transport the material S on the ground 3 by using a panel or the like. In the underground space 2, the loading trucks 40 of the transport vehicles 6 on the material carrying lines L <b> 1 and L <b> 2 instructed by the operator are located at the carrying position 32 together with the traversing floor 35 of the traverser 5.
[0038]
When the gripper 12 descends to the carry-in position 32, the positioning guide 26 of the gripper 12 and the positioning guide 39 of the traversing floor 35 of the traverser 5 engage to guide the material S onto the loading cart 40 on the traversing floor 35. I do. When the material S is loaded on the loading cart 40, the distance between the forks 23 of the gripper 12 is increased and only the gripper 12 is raised.
[0039]
Next, the traversing floor 35 is located at the first position P1 or the fourth position P4 according to the instruction of the operator. Thus, the material S is located on an appropriate material transport line. Thereafter, the drive truck 41 is connected to the transport truck 40, and the material S is transported to a predetermined location along the main rails 30a, 31a.
[0040]
When the material S has been delivered to a predetermined place, the transport trolley 6 moves backward on the main rails 30a and 31a and is positioned on the standby rails 30b and 31b.
[0041]
As described above, in the underground loading device of the present embodiment, the material S is dropped from the ground 3 into the underground space 2, and the material S is moved to one of the material transport lines L1 and L2, and then the material S Since a series of material loading operations such as transporting to a predetermined location along the transport lines L1 and L2 can be automatically performed, the material S can be loaded in a short cycle, and the construction period can be shortened.
[0042]
Further, even if the vertical transport device 4 fails, it is not necessary to interrupt the tunnel excavation work, so that the construction period can be shortened.
[0043]
Further, the structures of the vertical transport device 4 and the traverser 5 are simple and can be manufactured at low cost.
[0044]
It should be noted that the present invention is not limited to the above embodiment, and various modifications can be considered.
[0045]
【The invention's effect】
In short, according to the present invention, the following excellent effects are exhibited.
1) The material input cycle is short.
2) The construction period can be shortened.
[Brief description of the drawings]
FIG. 1 is a schematic front view of an underground loading device according to an embodiment of the present invention.
FIG. 2 is a schematic side view of the underground loading device of FIG.
FIG. 3 is a front view of the vertical transport device.
FIG. 4 is a side view of the traveling crane.
FIG. 5 is a side view of the grip portion.
FIG. 6 is a front view of a grip.
FIG. 7 is a top view of the traverser.
FIG. 8 is a partial front view of the traverser.
FIG. 9 is a side view of the traverser.
FIG. 10 is a top view of a material transfer line and a traverser.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Vertical shaft 2 Underground space 4 Vertical transportation device 5 Traverser 6 Transporting trolley 7 Traveling crane 8 Overhead crane 30a, 31a Main rail (main line)
30b, 31b Standby rail (standby line)
S Material T1, T2 Tunnel L1, L2 Material transfer line

Claims (4)

Any one of a vertical transport device for lowering the material from the ground to the underground space, a plurality of material transport lines formed in the underground space, and the plurality of material transport lines for transferring the material unloaded by the vertical transport device; An underground loading device, comprising: a traverser for moving the material upward, and a transport cart that transports the material along the material transport line. The material transport line is formed by branching off the main line and the main line for transporting the material, and when one transport vehicle is transporting the material along the main line, the other transport vehicle is The underground loading device according to claim 1, further comprising a standby line for waiting. 3. The underground loading device according to claim 1, wherein the vertical transport device comprises a crane. An underground loading device for loading materials along a plurality of tunnel excavation lines continuous below a shaft,
A vertical transport device for lowering the material from the ground side of the shaft to the lower part of the shaft, a material transport line extending along each of the tunnel excavation lines, and a plurality of material transport lines for transferring the material unloaded by the vertical transport device. Traverser for moving on any one of the above, comprising a plurality of transport vehicles transporting the material along the material transport line, the material transport line, a main line for transporting the material, And a standby line formed so as to branch off from the main line so that when one transport vehicle is transporting the material along the main line, another transport vehicle is on standby. Underground loading device.

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