JPH1037698A - Segment conveyor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the cost of a segment conveyor, and to improve the efficiency of segment conveyance works. SOLUTION: Segments 7 are gripped by a segment gripper 3 for a portal crane 2 on a ground, and lowered up to the bottom section of a shaft 1. A lifting-lowering guide 4 guiding the lifting and lowering of the segment gripper 3 is disposed in upright onto the bottom section of the shaft 1. A segment temporary base 6 is installed into a tunnel 5. A shuttle server 8 for carrying and shifting the segments 7 directly received from the segment gripper 3 at a place at the lower end section of the lifting-lowering guide 4 up to the temporary base 6 is mounted.

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 used for transporting a tunnel lining segment from the ground through a shaft into a tunnel.

[0002]

2. Description of the Related Art When a tunnel is constructed by a shield method, a tunnel face is generally cut at a cutting edge at a front end of a shield frame, and a shield frame is propelled by a thrust of a rear shield jack while holding the face, and a shield is propelled. As the shield frame is propelled at the rear of the frame, the arc-shaped segments are assembled by an erector to complete the lining.

In order to efficiently supply the segments to the erector, it is necessary to set up a stock yard near the entrance in the tunnel and transport the segments from the ground to the stock yard through a shaft to be stocked. .

As a conventional segment transport device for transporting a segment from the ground through a shaft to a stock yard in a tunnel, there is an example shown in FIGS. 10A and 10B (Japanese Patent Publication No. 7-9156).

[0005] That is, a lift device d for raising and lowering a transporter b carrying a transport vehicle a between the ground and the bottom of a shaft c;
A segment transfer device f provided at the bottom of the shaft c so as to be movable in the direction of the tunnel e, and a self-propelled truck h traveling between the bottom of the shaft c and the stock yard g in the tunnel e are provided on the ground. The transport vehicle a on which the segment i is mounted is placed on the transport device b of the lift device d, and after the transport device b is lowered to the bottom of the shaft c, the transport vehicle a is lowered from the transport device b and moved to the segment loading position j, In the segment loading device j, the segment i on the transport vehicle a is lifted by the traversing trolley l of the segment transfer device f, and the segment transfer device f
Is moved to the segment transfer position k, the lifted segment i is laterally moved to be dropped on the self-propelled vehicle h, and then the self-propelled vehicle h receiving the segment i is driven into the tunnel e. As a result, the segment i is transported to the stockyard g.

[0006]

However, in the case of the above-described conventional segment transport device, the transport vehicle a on which the segment i is mounted is a heavy object, so that the lift device d needs to be provided with heavy equipment and is expensive. In addition, the transport vehicle a which has been lowered to the bottom of the shaft c is once moved from the transporter b to the segment loading position j, and after being emptied, placed again on the transporter b and returned to the ground. Therefore, there is a problem that the cycle time until the next segment i is carried into the bottom of the shaft c becomes long, and further, at the bottom of the shaft c, the transport vehicle a is moved or the segment transfer device f
, Or the self-propelled carriage h must be moved to transport the segment i. Therefore, there is a problem that a large transport space for the segment i must be secured. .

[0007] Accordingly, the present invention is to reduce the cost by eliminating the need for a heavy equipment lift device, and to shorten the cycle time for loading a segment to the bottom of a shaft to improve work efficiency. In addition, the space for carrying the segments at the bottom of the shaft is reduced, so that the space can be effectively used.

[0008]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, according to the present invention, a portal crane is arranged so as to be able to pass over a shaft, and the portal crane is provided with a segment gripper. An elevating guide, which guides the elevating of the segment gripper, is provided upright at the bottom of the device to reach the ground.

When the segment is transported into a tunnel through a shaft, the segment is gripped by a segment gripper of a portal crane on the ground, and the segment gripper is lowered along an elevating guide. Deliver the segment directly onto the waiting underground trolley.

A shuttle server in which a segment temporary placing table is installed in a tunnel, and a segment received from a segment gripping machine is transferred at the lower end position of the lifting guide and transferred onto the segment temporary placing table. In this configuration, after the segments lowered along the elevating guide are transferred to the shuttle server, the shuttle server moves to the position of the temporary segment base in the tunnel to transfer the segments.

Further, the segment temporary placing table is constituted by arranging a pair of left and right underframes in parallel, and a shuttle server is provided on the carriage so that the receiving table can be raised and lowered by a jack, and the shuttle server can be inserted between the left and right underframes. With the dimensions set, the shuttle server can be inserted between the left and right underframes of the segment temporary placing table with the segment loading stand raised, and the segment temporary placing table is lowered by lowering the receiving stand. The segment can be easily mounted on the top.

[0012]

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

FIGS. 1 to 8 show an embodiment of the present invention, in which a portal crane 2 is arranged on the ground so that it can pass above a shaft 1, and a segment provided in the portal crane 2. FIG. An elevating guide 4 erected in the shaft 1 so as to guide the elevating of the gripper 3 from the ground to the bottom of the shaft 1,
Temporary segment base 6 installed at the entrance of tunnel 5
And the segment 7 received from the segment holding machine 3 of the portal crane 2 so that the segment 7 can be moved between the segment temporary placing table 6 and the lower end position of the lifting guide 4. Shuttle server 8
And

The portal crane 2 is normally used for carrying materials and the like accompanying tunnel construction.
As shown in an enlarged view, a trolley 10 is provided on the girder 9 so that the winch 11 installed on the trolley 10 can lift and lower the segment gripper 3. A guide roller 12 for engaging with the elevating guide 4 is attached to the portion.

The lifting guide 4 is made of an angle material 4 at a position facing the tunnel 5 as shown in an enlarged view in FIG.
The columns 13 are set up at required intervals, and
The space between the shafts is connected by a connecting member 14, the side wall portion of the shaft 1 is supported via a supporting member 15, and a segment transfer space 16 for transferring the segment 7 to the shuttle server 8 is formed at a lower end portion, Furthermore, the upper end is expanded upward so that the segment gripper 3 can be easily dropped.

As shown in the enlarged view of FIG. 5, the segment temporary placing table 6 has left and right underframes 17 taller than the shuttle server 8 formed wider than the shuttle server 8 at the axis of the tunnel 5. Install along the left and right underframe 1
The segments 7 can be placed between the upper surfaces of the segments 7.

As shown in FIGS. 6 to 8, the shuttle server 8 is provided with a frame 17 of the temporary placing table 6 between the segment delivery space 16 and the end of the temporary placing table 6.
A pair of left and right rails 18 are laid along the inside of the vehicle, and on a carriage 30 mounted on the rails 18 via wheels 29,
A receiving table 31 having an upper surface portion corresponding to the outer shape of the segment 7 is provided so as to be movable up and down by a hydraulic jack 32,
A rubber 33 made of urethane rubber is provided on the upper surface of the receiving table 31.
Is attached.

The drive mechanism of the shuttle server 8 has the following configuration. That is, a bracket 19 is fixed to one end of a pair of left and right rails 18 to rotatably support a drum 20 disposed in the left and right direction between the brackets 19, and a bracket is attached to the other end of the pair of left and right rails 18. 21 and a drum 22 is rotatably supported between the brackets 21. A large-diameter gear 23 is attached to an end of the one drum 20.
A motor 25 having a pinion gear 24 meshing with the output shaft is mounted on a bracket 19, and further, a pusher dog 26 is mounted on the lower surface of the carriage 30 of the shuttle server 8.
After the other end of the cord-like body 27 having one end connected to the pusher dog 26 is wound around the one drum 20 an appropriate number of times and then around the other drum 22 an appropriate number of times, the pusher dog 26 And the shuttle server 8 can be reciprocated via the movement of the cord 27 by reversible driving of the motor 25.

In FIG. 1, reference numeral 28 denotes a segment transfer device for transporting the segments 7 placed on the segment temporary placing table 6 to the stock yard 34.

In the present invention, the operation of transporting the segments 7 prepared on the ground to the inside of the tunnel 5 through the shaft 1 is performed automatically.

First, the portal crane 2 on the ground is operated, the segment 7 is gripped by the segment gripper 3 for one piece, and the segment 7 is positioned directly above the elevating guide 4. Next, the segment gripper 3 is lowered by the winch 11 and dropped into the elevating guide 4, and the segment 7 gripped by the segment gripper 3 is lowered to the lower end position of the elevating guide 4, and the lifting / lowering is performed. The segments 7 are transferred so as to be directly placed on the shuttle server 8 which is waiting in the segment transfer space 16 formed at the lower end of the guide 4. The segment gripping machine 3 that has delivered the segment 7 immediately rolls it up and returns it to the ground, and grips the next segment 7.

On the other hand, the shuttle server 8 having received the segment 7 transports the segment 7 to the designated position of the segment temporary placing table 6 set at the entrance of the tunnel 5 and temporarily places it. In this case, as shown in FIG. 6, the shuttle server 8 enters the space between the left and right underframes 17 of the temporary segment placing table 6 with the receiving table 31 slightly lifted by the jack 32, and lowers the receiving table 31 at the designated position. By doing so, the segment 7 can be easily placed on the segment temporary placing table 6.

The shuttle server 8 having the segments 7 placed on the segment temporary placing table 6 returns to the segment transfer space 16 at the lower end of the elevating guide 4 again, receives the next segment 7 and receives at least one ring in the above-described procedure. The minute segment 7 is stocked on the segment temporary placing table 6. In addition, temporary table 6 and stockyard 3
4 so that about 7 rings of the segment 7 are stocked.

In the above description, the portal crane 2 for carrying the segment 7 from the ground to the bottom of the shaft 1 is not only used for carrying the segment 7 but is indispensable for carrying materials and the like accompanying shield work. It is something
In addition, when the segment 7 is loaded, stable work can be performed by using only the elevating guide 4 alone, so that a conventional heavy equipment lifting device can be dispensed with, and the cost can be reduced accordingly. Can be achieved.

Further, since the segment grasper 3 for grasping the segment 7 can return the segment 7 to the ground immediately after delivering the segment 7 to the shuttle server 8, the cycle time for carrying in the segment 7 is shorter than that in the related art. Can be shortened. Further, the segment transport space required at the bottom of the shaft 1 includes a shuttle server 8
Needs only to have a space that can move linearly between the segment transfer space 16 and the tunnel 5, so that other spaces can be used effectively.

Next, FIG. 9 shows another embodiment of the present invention.
In place of the above, the underground transport vehicle 35 can be moved to the position of the segment delivery space 16 at the lower end of the lifting guide 4. The elevating guide 4 is turned 90 ° in the horizontal direction with respect to FIG.

As shown in FIG. 9, the segment 7 suspended to the lower end of the elevating guide 4 is transferred to the underground transport vehicle 35.
The segment gripper 3 can be returned directly to the ground, as in the case of the above embodiment.

In the above-described embodiment, the case where the segment gripper 3 of the portal crane 2 grips one piece of the segment 7 has been described. Alternatively, three pieces may be overlapped and gripped, and a mechanism other than the illustrated one may be employed as the drive mechanism of the shuttle server 8. It goes without saying that various changes can be made in.

[0029]

As described above, according to the segment conveying device of the present invention, the following excellent effects are exhibited. (1) A portal crane is arranged so that it can pass above the shaft, and the portal crane is provided with a segment gripper,
A vertical guide, which guides the vertical movement of the segment gripper, is provided at the bottom of the shaft so as to stand up to the ground, so that the conventional heavy equipment is used to carry the segments to the bottom of the shaft. The cost can be reduced without the use of a lift device, and the segment gripper can return to the ground immediately after the segment is lowered, so that the cycle time for loading the segment can be shortened and the work efficiency can be reduced. Can be improved. (2) Equipped with a shuttle server that installs a segment temporary placing table in the tunnel and transports the segment received from the segment gripper at the lower end position of the elevating guide and transfers it to the segment temporary placing table. With this configuration, as in the case of (1) above, the cycle time for carrying in the segments can be shortened, and the shuttle server moves to the location of the segment temporary storage table in the tunnel to efficiently move the segments. Can be transferred. (3) The only space required for the segment transport space at the bottom of the shaft is a space in which the underground transport vehicle or the shuttle server 8 can move linearly, so that other spaces can be used effectively. (4) The segment temporary placing base is configured by arranging a pair of left and right underframes in parallel, and a shuttle server is provided on the carriage so that the receiving stand can be raised and lowered by jacks, and a width dimension that can enter between the left and right underframes. With this configuration, the shuttle server is inserted into the frame of the segment temporary placing table with the segment-mounted receiving stand raised, and the segment is lowered at that position to move the segment to the temporary placing table. It can be easily transferred to the top.

[Brief description of the drawings]

FIG. 1 is a schematic side view showing an embodiment of a segment transport device of the present invention.

FIG. 2 is a view taken in the direction of arrows II-II in FIG.

FIG. 3 is an enlarged view of a portal crane.

FIG. 4 is an enlarged view in the direction of arrows IV-IV in FIG. 2;

FIG. 5 is an enlarged view in the direction of arrows VV in FIG. 1;

FIG. 6 is an enlarged view of the shuttle server.

FIG. 7 is a side view of FIG. 6;

FIG. 8 is a plan view of FIG. 7;

FIG. 9 is a schematic side view showing another embodiment of the present invention.

FIGS. 10A and 10B show an example of a conventional segment transport device, wherein FIG. 10A is a schematic side view, and FIG. 10B is a partially enlarged plan view of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Vertical shaft 2 Gate crane 3 Segment grasper 4 Elevating guide 5 Tunnel 6 Segment temporary placing stand 7 Segment 8 Shuttle server 17 Stand frame 30 Truck 31 Receiving stand 32 Jack

Claims (3)

[Claims] 1. A portal crane is arranged so that it can pass above a shaft, and the portal crane is provided with a segment gripper, and the bottom of the shaft guides the lifting and lowering of the segment gripper. A segment conveying device having a configuration in which a lifting guide is erected at a height reaching the ground. 2. A shuttle server in which a segment temporary placing table is installed in a tunnel, and a segment received from a segment gripper is transferred at the lower end position of the lifting guide and transferred onto the segment temporary placing table. The segment conveying device according to claim 1, further comprising: 3. The segment temporary placing table is constituted by arranging a pair of left and right underframes in parallel, and a shuttle server is provided on the carriage so that the receiving table can be raised and lowered by a jack, and the shuttle server can enter between the left and right underframes. 3. The segment conveying device according to claim 2, which has dimensions.