JP2662581B2 - Automatic material transfer method in shield method - Google Patents

Description

The present invention relates to a method of transporting materials such as segments to the vicinity of a shield machine in a shield construction method, and in particular,
The present invention relates to an automatic material transfer method in a shield method capable of almost automatically transferring materials from a material storage warehouse provided on the ground to a position near a shield machine.

"Prior art" As is well known, the shield method involves excavating the ground with a cutter device provided at the front of a shield machine having an outer cylindrical skin plate, and forming a segment which is a cylindrical divided body inside the shield machine. Assembling, furthermore, by taking the reaction force at the front end of this segment and extending the shield jack inside the shield machine, the entire shield machine is propelled forward,
This is a method of forming a tunnel underground by repeating these steps.

Conventionally, as a means for transporting segments from the ground to the shield machine, a predetermined number of segments from the field piled on the ground is mounted directly on the transport truck at the bottom of the shaft using a Goliath crane or overhead crane, and this transport truck is used. Means are usually used in which an operator carries the battery to the rear of the shield machine while towing the battery car, unloads the segment with a trolley hoist, and then transports the segment to the elector device by the hoist.

"Problems to be Solved by the Invention" However, the conventional segment transport means has the following problems, and the solution has been awaited.

In other words, when storing segments on the ground in an unstacked state, a vast site is required near the shaft, making it difficult to implement in urban areas, and it takes time and effort to manage the inventory of the stored segments, resulting in inefficiency. It is a target. Also,
When this unloaded segment is transported to the bottom of a shaft using a Goliath crane or the like, a large number of operators such as crane operators, auxiliary workers, and receiving workers are required, and a heavy load (one piece of the segment is However, it is difficult to speed up the work to ensure safety. This causes the same problem when unloading the segments from the transport trolley using the trolley hoist and then transporting the segments to the erector device by the hoist. Furthermore, an operator is also required when the transport vehicle is towed by a battery vehicle, and the number of personnel required for the entire transport operation is considerable.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an automatic material transfer in a shield method in which a process from storage of a segment to transfer to a vicinity of a shield machine can be performed almost completely automatically. It is to provide a method.

"Means for solving the problem" The present invention is applied to a shield construction method of starting a shield machine from a shaft excavated in the ground to form a tunnel in the ground, loading materials to be supplied to the shield machine. A method of automatically transporting materials by reciprocating the transport vehicle between the ground and the shield machine through the shaft, using a transport vehicle capable of self-propelling. While storing the materials in the warehouse, the materials stored in the warehouse are loaded onto the transport trolley by the transfer device attached to the warehouse, and the transport trolley is self-propelled toward the shaft, and Allow the vertical transport machine installed in the shaft to directly enter, transport the transport vehicle to the bottom of the vertical shaft by operating the vertical transport device, self-propelled the transport vehicle that reached the bottom of the vertical shaft, and from the vertical transport device take down With self-propelled in the tunnel to reach the vicinity of the shield machine, the transfer device attached to the shield machine to deliver the material loaded on the carrier to the shield machine Is what you do.

In other words, in the present invention, the transport vehicle loaded with the material moves on the vertical transport device as it travels by itself, and when the vertical transport device reaches the bottom of the shaft, the transport vehicle descends from the vertical transport device by itself and remains in the tunnel. The self-propelled to the shield machine. Therefore, according to the present invention, there is no need to perform a material transshipment operation in the middle of the transport route, which was conventionally required. As a result, it is possible to improve the efficiency of the transport operation and achieve automation.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 to FIG. 12 are views showing an automatic material conveying method in a shield method according to an embodiment of the present invention.

First, the shield method to which the present embodiment is applied will be described. A shaft 1 having a depth reaching the tunnel formation depth is formed at a predetermined position in the ground, and a shield machine 2 is formed from the bottom of the shaft 1. Starting in the horizontal direction, the shield machine 2 excavates the ground while assembling the segments 3, 3,..., Which are cylindrical divided bodies, on the excavation wall, thereby forming a tunnel 4 behind the shield machine 2. The automatic material transfer method according to the present embodiment is used for transferring the segments 3, 3,... To the vicinity of the shield machine 2.

In the automatic material transport method according to the present embodiment, a material storage warehouse 6 provided on the ground, a vertical transport machine 7 provided in the shaft 1, a warehouse 6, an upper end of the vertical transport machine 7, and a vertical transport machine 7, a track 8 provided by connecting the lower end of the shield machine 2 to the shield machine 2, a transport vehicle 9 traveling on the track 8 and reciprocating between the warehouse 6 and the shield machine 2, Transfer devices 10 and 11 which are provided in the vicinity and load and unload the segments 3 are used. In this embodiment, since the track 8 is a so-called single-track type, a branch 8a for exchanging the carriage 9 is provided in the tunnel 4.

A well-known automatic stock rack is used for the warehouse 6, and as shown in FIGS.
13, ... are arranged in a horizontal direction and a vertical direction in a storage unit 14,
14 are arranged in parallel in the immediate vicinity of the shaft 1.
Each of the shelves 13 of the warehouse 6 stores a predetermined number of segments 3, 3,. The tunnel 4 according to the present embodiment
Means 6 segments 3 ... (including key segments)
Each shelf 13 stores three segments 3,..., That is, half-ring segments 3,... In a stacked state.

The transfer device 10 attached to the warehouse 6 has a gate-shaped frame 15 configured to be able to run along the gap between the storage portions 14 and 14, and a vertically movable movable member with respect to the gate-shaped frame 15. , And a fork 17 which is provided to be able to move left and right with respect to the lifter 16 and supports the segments 3,... From below.

Further, the end of the track 8 extends to near the side end of the one storage section 14, and the transfer device 10 is allowed to run beyond the end of the track 8, that is, the end of the track 8 Are the segments 3,...

Next, as shown in FIG. 5 to FIG. 7, the vertical transfer machine 7 includes a hollow frame 18 made of steel, which is provided over the entire length of the shaft, and a gondola disposed in the frame 18.
19, and a winch 22 which makes the gondola 19 vertically movable via a wire 20 and a pulley 21. Also,
The track 8 extends to the upper end and the lower end of the hollow frame 18, and a connecting track 23 connected to the track 8 is laid in the gondola 19.

As shown in FIG. 8, the transport trolley 9 traveling on the track 8 is provided at the four corners at the lower part of the trolley main body 25 with the loading part 24 of the segments 3,. Are arranged on the track 8, an electric motor 27 for applying a driving force to the traveling wheels 26, and a motor 27.
And a battery 28 as a driving source of the power supply.
In this embodiment, the number of the segments 3,... That can be transported by the transport vehicle 9 is three, and the transport of one ring of segments 3,. 9 is used by being connected to two units via a connector 29. The track 8 is provided with a passage sensor for detecting the passage of the carrier 9 at predetermined intervals, and a command unit (both not shown) for instructing the carrier 9 to run or stop.

Furthermore, a transfer device provided behind the shield machine 2
11, a segment lifter 31 provided at the front end of the temporary floor 30 of the tunnel 4, a segment carrier 33 provided behind the erector device 32 of the shield machine 2, as shown in FIGS. Segment 3 from 31 to carrier 33, ...
And a portal crane 34 for transferring the same.

The segment lifter 31 is provided with a gate-shaped frame 36 configured to be movable on a track 35 laid on the front end of the temporary floor 30, and is provided at one end of the gate-shaped frame 36 so as to be movable up and down. And a fork 37 provided to be able to move forward and backward. The tip of the track 8 is laid inside the portal frame 36, so that the segment 3,
Are arrived in the portal frame 36 of the segment lifter 31.

The transport table 33 has a base 38 having an arc-shaped cross section provided along the lower end of the tunnel 4, and a roller 3 on the base 38.
A movable table 40 provided to be able to move back and forth through 9,...
And an extrusion jack 41 extending downward. Drive rollers 42,... Are provided above the moving table 40.

The portal crane 34 includes a portal frame 43 provided at the rear end of the transfer table 32 and one end of the portal frame 43.
And a trolley hoist 45 that can run along the rail 44, the other end of which is connected to the upper end of the portal frame 36 of the segment lifter 31. Further, the hoist 45 has a traveling portion 46 that travels along the rail 44 while gripping the rail 44, and a turning portion 47 provided at the lower end of the traveling portion 46 so as to be freely pivotable in the horizontal direction.
It comprises a gripper 48 for gripping the segment 3 and a winch 49 for vertically moving the gripper 48 in a suspended state. The method of gripping the segment 3 by the grip portion 48 is arbitrary, and a suitable method is one that fits into a grout hole or a bolt box (not shown) of the segment 3.

The transfer device 11 is connected to the rear end of the shield machine 2, and accordingly, the transfer device 11 is moved with the excavation of the shield machine 2.
11 also moves forward, so that the
The relative positional relationship with 11 is always constant.

Each of these devices can be remotely controlled, and if necessary, the central monitoring device 12 can instruct its operation / stop and also monitor its operation state.

Next, a method of transporting the segments 3,... According to one embodiment of the present invention to the erector device 32 of the shield machine 2 using the transport device 5 having the above configuration will be described.

The transport vehicle 9 is operated according to a diagram as shown in FIG. In this embodiment, for the purpose of cost reduction, only two sets of transfer stand differences 9 are connected on the track 8.

When it is time to transport one ring (ie, six) segments 3, 3,... In accordance with the excavation cycle of the shield machine 2, the central monitoring device 12 sends a 1 to the transfer device 10 laid in the warehouse 6. .. Are instructed to be loaded with the segments 3,... At the same time, the central monitoring device 12 monitors whether one of the sets of transport vehicles 9, 9 has arrived at the warehouse 6, and if it has not arrived, instructs to go to the warehouse 6.

The transfer device 10 is based on a command from the central monitoring device 12,
After moving the portal frame 15 and the lifter 16 to the front of the shelf 13 in which the segments 3 to be transferred are stored, the forks 17 are used to support the segments 3 from below,
After the fork 17 is drawn into the lifter 16, the portal frame 15 is moved to the front of the transport vehicles 9, 9, and the segments 3,... Are loaded on the transport vehicles 9, 9 using the lifter 16 and the forks 17.

When the segments 3,... Are loaded on the transport vehicles 9, 9, the central monitoring device 12 commands the transport vehicles 9, 9 to proceed toward the vertical transport machine 7. At the same time, the central monitoring device 12 controls the gondola 19 of the vertical transfer machine 7.
Monitor if is located at the top of frame 18,
If not, the winch 22 is operated to move the gondola 19 to the upper end of the frame 18.

Based on the command, the transport vehicles 9 and 9 travel on the track 8 toward the vertical transport device 7 and stop at the gondola 19 when they arrive in the gondola 19. Next, the central monitoring device 12
Commands the winch 22 to position the gondola 19 at the lower end of the frame 18, and the winch 22 draws out the wire 20 based on this instruction to lower the gondola 19 to reach the lower end of the frame 18.

Further, the central monitoring device 12 monitors and confirms the position of the other transport vehicles 9, 9, and when the pair of these transport vehicles 9, 9 can be replaced at the branch 8 a of the track 8, the difference between the two transport vehicles 9, 9 is determined. , 9 to proceed.
Alternatively, one of the sets of the transport vehicles 9, 9 may be advanced in advance, and the set of the transport vehicles 9, 9 on the side that has arrived at the branch 8a first may be kept on standby. In this way, two sets of transport vehicles 9, 9 can be replaced in the tunnel 4.

When the carriage differences 9, 9 arrive at the segment lifter 31, the central monitoring device 12 commands the carriages 9, 9 to stop. The carriages 9 and 9 stop in the portal frame 35 of the segment lifter 31 based on this command.

Next, by extending the fork 37 of the segment lifter 31 toward the transport vehicles 9, 9, the segments 3,... Transported by the transport platform differences 9, 9 are supported from below. In this state, the central monitoring device 12 instructs the transport vehicles 9, 9 to move toward the vertical transport device 7, and the transport vehicles 9, 9 move toward the vertical transport device 7 based on this command. The reason that the transport carts 9, 9 are not kept on the segment lifter 31 for a long time in this way is to maximize the transport efficiency of the segments 3,... Then, while supporting the segments 3,... From below by the forks 37 of the segment lifter 31, the forks 37 are lowered so that the segments 3,.
Lower to around 30.

Next, the trolley hoist 45 of the portal crane 34 is
Run along 44 to the top of the segment lifter 31. Further, by operating the winch 49 of the trolley hoist 45, the grip portion 48 is suspended, and one segment 3 is gripped by the grip portion 48. When the segment 3 can be gripped, the grip portion 48 is lifted by operating the winch 49 again.
In this state, by moving the trolley hoist 45 to the upper part of the carriage 33 along the rail 44, the suspended segment 3 is transferred to the carriage 33.

At the stage where the trolley hoist 45 arrives at the upper part of the carrier table 33, the direction of the segment 3 is turned by 90 ° by turning the turning part 47 by 90 °, and then the gripper 48 is lowered by operating the winch 49, The segment 3 is loaded on the moving table 40 of the transfer table 33. The segment 3 is turned by 90 ° because the direction in which the segment 3 is conveyed and the direction when assembled by the erector device 32 are different by 90 °.
The loaded segment 3 is driven by a driving roller
It is transported forward by 42 and reaches the front end of the moving table 40. In this state, the above-described step of transferring the segment 3 to the transfer table 33 may be performed again, or only one segment 3 may be resident on the transfer table 33 at all times.

When the segment 3 has been transferred to the front end of the moving table 40, the extruding jack 41 of the conveying table 33 is extended, whereby the moving table 40 is moved.
The segment 3 at the front end is transported below the erector device 32.

By repeating the above steps, the shield machine 2
Can be transported from the warehouse 6 to the erector device 32 in accordance with the excavation process. Here, in this embodiment, the segments 3,... Mounted in the warehouse 6 are transported to the erector device 32 by the single transport trolley 9 via the vertical transport device 7, and The loading and unloading of the segments 3,... Is also carried out by the transfer devices 10, 11, and since they are under the control of the central monitoring device 12, they are almost fully automatic, ie, with little human intervention. Can be transported, and the transport operation of the segments 3,... Can be performed safely and reliably. In particular, the transport trolley 9 is capable of self-traveling, and the transport trolley 9 loaded with the segment 3 travels on its own and gets into the vertical transport 7, and descends from the vertical transport 7 by itself to the shield machine 2 as it is. Since the vehicle runs, it is not necessary to perform a transshipment operation of the segment 3 in the middle of the transport path, so that the operation can be performed more efficiently and at a higher speed.

Further, in the present embodiment, since a so-called automatic stock rack is used for the warehouse, the land area can be reduced as compared with the case where the stock is stored in the open pile as in the conventional case,
It also has the effect of being very suitable for enforcement in urban areas.

The details of the automatic material transfer method in the shield method according to the present invention are not limited to the above-described embodiment, and various modifications are possible. As an example, the number of transported segments 3,... And the number of transported trolleys 9,... Are arbitrary and are not limited to the above embodiment. Further, it can be suitably used not only for transporting the segments 3,... But also for transporting other materials.

[Effects of the Invention] As described in detail above, according to the present invention, materials mounted in a warehouse can be transported to a vicinity of a shield machine by a transport trolley via a vertical transport machine, and near a warehouse and a shield machine. Also, the loading and unloading of the materials is performed by the transfer device, so that the materials can be transported automatically, that is, without any human power, and the material can be transported safely and reliably. In particular, since the transport vehicle can be loaded on the vertical transport device by itself using the self-propelled transport device difference, and descends from the vertical transport device by itself and travels on its own to the shield machine, the transport vehicle cannot move along the transport route. It is not necessary to transship materials, so that the efficiency and speed of the work can be improved.

[Brief description of the drawings]

1 to 12 are views showing an automatic material transport method in a shield method according to an embodiment of the present invention,
FIG. 1 is a schematic perspective view showing the overall configuration, FIG. 2 is a plan view showing the arrangement of the equipment on the ground, and FIGS. 3 and 4 are views showing only the warehouse taken out. FIG. Plan view, fourth
FIGS. 5 to 7 show only the vertical transporter taken out. FIG. 5 is a front view, FIG. 6 is a side view, FIG. 7 is a plan view, and FIG. FIG. 8 is a front view showing only the transfer cart, and FIGS. 9 to 12 are diagrams showing only the transfer device provided near the shield machine. FIG. 9 is a front view. FIG. 10 is a front view, FIG. 11 is a cross-sectional view taken along the line XI-XI ′ of FIG. 10, and FIG.
FIG. 13 is a cross-sectional view taken along the line XII ′ of FIG. 1… shaft 2… shield machine 3… segment (material) 4… tunnel 4… material storage warehouse 7… vertical transport machine 8… track 9… transport trolley 10 , 11 ... Transfer equipment.

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Hideki Hagiwara 2-16-1, Kyobashi, Chuo-ku, Tokyo Shimizu Construction Co., Ltd. (72) Inventor Yasumasa Suzuki 2-161 Kyobashi, Chuo-ku, Tokyo Shimizu Construction Inside (72) Inventor Souichi Makino 2-16-1, Kyobashi, Chuo-ku, Tokyo Shimizu Construction Co., Ltd. (72) Inventor Sato, etc. 2-161 Kyobashi, Chuo-ku, Tokyo Shimizu Construction Co., Ltd. (56) References JP-A-63-110399 (JP, A) JP-A-63-71299 (JP, U)

Claims (1)

(57) [Claims] The present invention is applied to a shield construction method in which a shield machine is started from a shaft excavated in the ground to form a tunnel in the ground, and is capable of carrying materials to be supplied to the shield machine and capable of self-propelling. Is a method of automatically transporting materials by reciprocating the transport cart between the ground and the shield machine through the shaft, and storing the materials in a material storage warehouse installed on the ground. In addition, the materials stored in the warehouse are loaded onto the transport trolley by the transfer device attached to the warehouse, and the transport trolley is self-propelled toward the pit, and the vertical is installed in the pit. Operate the vertical transporter, transport the transport vehicle to the bottom of the shaft, move the transport vehicle that has reached the bottom of the shaft by itself, unload it from the vertical transport, and leave the tunnel as it is. In which the material loaded on the carrier is transferred to the shield machine by a transfer device attached to the shield machine by self-propelling inside the shield machine and reaching the vicinity of the shield machine. Automatic material transport method in Japan.