JP3765128B2 - Segment transport device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a segment conveying device used for conveying a tunnel lining segment from the ground to a tunnel through a vertical shaft.
[0002]
[Prior art]
When constructing a tunnel by the shield method, the tunnel face is generally cut at the blade edge at the front end of the shield frame, the shield frame is propelled by the thrust of the rear shield jack while holding the face, and the shield frame at the rear of the shield frame. As propelled, the arc-shaped segments are assembled by an erector to complete the lining.
[0003]
In order to efficiently supply the segment to the erector, it is necessary to set a stock yard near the entrance in the tunnel, and transport the segment to the stock yard from the ground through a shaft and stock it.
[0004]
As a conventional segment transport apparatus for transporting a segment from the ground through a shaft to a stock yard in a tunnel, there is one as shown in FIG. 10 (a) and (b) (Japanese Patent Publication No. 7-9156).
[0005]
That is, a lift device d that lifts and lowers the carrier b carrying the carriage a between the ground and the bottom of the shaft c, and a segment transfer device f that is movably provided in the direction of the tunnel e at the bottom of the shaft c, A self-propelled carriage h traveling between the bottom of the shaft c and the stock yard g in the tunnel e is mounted on the carrier b of the lift device d. After being lowered to the bottom of the vertical shaft c, the transport carriage a is lowered from the transporter b and moved to the segment loading position j. In the segment loading apparatus j, the segment i on the transport carriage a is traversed by the segment transfer apparatus f. The segment i is lifted by the trolley l, the segment transfer device f is moved to the segment transfer position k, the segment i that has been lifted is laterally moved and suspended on the self-propelled carriage h, and then the segment i The self-propelled truck h received be run into the tunnel e, it is so as to convey the segment i to stockyard g.
[0006]
[Problems to be solved by the invention]
However, in the case of the conventional segment transport device, the transport carriage a on which the segment i is mounted is a heavy object, so that there is a problem that the lift device d needs to be heavily equipped and expensive. The transport carriage a lowered to the bottom of c is once moved from the transporter b to the segment loading position j, and after it becomes empty, it is placed on the transporter b again and returned to the ground. There is a problem that the cycle time until it is carried into the bottom of the vertical shaft c becomes long. Further, at the bottom of the vertical shaft c, the transport carriage a or the segment transfer device f is moved (including segment lateral movement). Since the segment i cannot be transported unless the self-propelled carriage h is moved, there is a problem that a large transport space for the segment i must be secured.
[0007]
Therefore, the present invention makes it possible to reduce the cost by eliminating the need for a heavy lifting device, and to improve the work efficiency by shortening the cycle time for carrying the segment to the bottom of the shaft. Furthermore, the space for carrying the segments at the bottom of the shaft is made small so that the space can be used effectively.
[0008]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present invention arranges a portal crane so that it can pass over a vertical shaft, and includes the segment crane in the portal crane, and at the bottom of the vertical shaft, A lifting guide that guides the lifting is set up as a height reaching the ground.
[0009]
When transporting a segment through a shaft into a tunnel, hold the segment with the segment gripping machine of the ground portal crane, lower the segment gripping machine along the lifting guide, and wait at the lower end of the lifting guide Deliver the segments directly onto the transport cart.
[0010]
In the above configuration, a shuttle is further provided with a segment temporary table in the tunnel, and the segment received from the segment gripper at the lower end position of the lifting guide is transferred to the segment temporary table. and configured to include a server, a segment is lowered along a lifting guide after hands over to the shuttle server, shuttle server to transfer causes the segments to move to the segment temporary support table position in the tunnel To do .
[0011]
Further, the segment temporary table is configured by arranging a pair of left and right frames in parallel, and the shuttle server is provided with a jack that can be moved up and down by a jack on the cart, and has a width dimension that can enter between the left and right frames. With this configuration, the shuttle server can be inserted between the left and right frame of the segment temporary stand while the base with the segment is raised, and the segment is placed on the segment temporary stand by lowering the base. Can be easily mounted.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0013]
1 to 8 show an embodiment of the present invention, and a portal crane 2 arranged on the ground so that it can pass above a shaft 1 and a segment gripping machine 3 provided in the portal crane 2. Lift guide 4 erected in the shaft 1 so as to guide the ascent and descent of the shaft from the ground to the bottom of the shaft 1, the segment temporary table 6 installed at the entrance in the tunnel 5, the segment temporary table 6 and the above A shuttle server 8 is provided that can move between the lower end position of the elevating guide 4 and that allows the segment 7 received from the segment gripping machine 3 of the portal crane 2 to be transferred onto the temporary segment table 6.
[0014]
The portal crane 2 is normally used for carrying materials and the like accompanying tunnel construction. As shown in an enlarged view in FIG. 3, the crane 2 is equipped with a traverse trolley 10 on the girder 9, and on the traverse trolley 10. The segment gripper 3 can be wound up and down by the installed winch 11, and a guide roller 12 for engaging with the lift guide 4 is attached to the corner of the main body frame of the segment gripper 3.
[0015]
As shown in the enlarged view of FIG. 4, the elevating guide 4 has four struts 13 made of angle members standing at a required distance at a position facing the tunnel 5, and the struts 13 are connected by connecting members 14. Then, the side wall of the shaft 1 is supported via the support member 15, and the segment delivery space 16 for delivering the segment 7 to the shuttle server 8 is formed at the lower end, and the upper end is further expanded upward. In this way, the segment gripping machine 3 is made easy to drop.
[0016]
As shown in the enlarged view of FIG. 5, the segment temporary placing table 6 has left and right base frames 17 that are taller than the shuttle server 8 and wider than the shuttle server 8 along the axis of the tunnel 5. The segment 7 is placed between the upper surfaces of the left and right underframes 17.
[0017]
As shown in FIGS. 6 to 8, the shuttle server 8 has a left and right side along the inner side of the frame 17 of the temporary table 6 between the segment delivery space 16 and the rear end position of the temporary table 6. A pedestal 31 having an upper surface corresponding to the outer shape of the segment 7 is mounted on a carriage 30 laid by a pair of rails 18 via wheels 29 on the rails 18 by a hydraulic jack 32. A rubber rubber 33 is attached to the upper surface of the pedestal 31 so as to be movable up and down.
[0018]
The drive mechanism of the shuttle server 8 has the following configuration. That is, a bracket 19 is fixed to one end portion of the pair of left and right rails 18 so as to rotatably support the drum 20 disposed in the left and right direction between the brackets 19, and the bracket is attached to the other end portion of the pair of left and right rails 18. 21 is fixed and the drum 22 is rotatably supported between the brackets 21, and a large-diameter gear 23 is attached to the end of the one drum 20, and a pinion gear 24 meshing with the gear 23 is output. A motor 25 attached to the shaft is installed on the bracket 19, and a pusher dog 26 is fixed to the lower surface of the carriage 30 of the shuttle server 8, and one end of the cord-like body 27 is connected to the pusher dog 26. The other end is wound around one drum 20 an appropriate number of times, and then wound around the other drum 22 an appropriate number of times, and then connected to the pusher dog 26 to reversibly drive the motor 25. More, it is the shuttle server 8 to be moved back and forth through the movement of the wick members 27.
[0019]
In FIG. 1, reference numeral 28 denotes a segment transfer apparatus for transporting the segment 7 placed on the segment temporary placing table 6 to the stock yard 34.
[0020]
In the present invention, the operation of transporting the segment 7 prepared on the ground through the shaft 1 into the tunnel 5 is performed automatically.
[0021]
First, the portal crane 2 on the ground is operated, and one piece of the segment 7 is gripped by the segment gripping machine 3 and positioned right above the lifting guide 4. Next, the segment gripping machine 3 is lowered by the winch 11 so as to be dropped into the lifting guide 4, the segment 7 gripped by the segment gripping machine 3 is lowered to the lower end position of the lifting guide 4, and lifted The segment 7 is delivered so as to be directly placed on the shuttle server 8 that has been waiting in the segment delivery space 16 formed at the lower end of the guide 4. The segment gripping machine 3 that has delivered the segment 7 immediately winds it up and returns it to the ground to grip the next segment 7.
[0022]
On the other hand, the shuttle server 8 that has received the segment 7 transports the segment 7 to the designated position of the temporary segment 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 frames 17 of the segment temporary 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 temporary segment table 6.
[0023]
The shuttle server 8 with the segment 7 placed on the temporary segment table 6 returns to the segment delivery space 16 at the lower end of the lifting guide 4 again, receives the next segment 7, and receives at least one ring segment according to the procedure described above. 7 is stocked on the temporary segment table 6. Further, the temporary placing table 6 and the stock yard 34 are combined to stock the segment 7 of about 5 rings.
[0024]
In the above, the gate-type 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 etc. accompanying shield construction. Moreover, when the segment 7 is carried in, it is possible to perform stable work by using only the lifting guide 4, so that the conventional heavy equipment lifting device can be dispensed with, and the cost is reduced accordingly. Can be achieved.
[0025]
In addition, since the segment gripping machine 3 that grips 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 the segment 7 is shortened compared to the conventional case. be able to. Furthermore, as the segment transport space required at the bottom of the shaft 1, it is sufficient that the shuttle server 8 has a space for moving the shuttle server 8 linearly between the segment delivery space 16 and the tunnel 5, so that other spaces are effective. Can be used.
[0026]
Next, FIG. 9 shows another embodiment of the present invention. Instead of providing the segment temporary table 6 and the shuttle server 8, the underground transport cart 35 is transferred to the lower end of the lifting guide 4 by the segment delivery. It is configured to be able to move to the position of the space 16. In addition, the raising / lowering guide 4 is turned 90 degrees in the horizontal direction with respect to FIG.
[0027]
As shown in FIG. 9, the segment 7 suspended to the lower end of the lifting guide 4 can be directly transferred onto the underground transport carriage 35, and the segment gripping machine 3 can be immediately used as in the case of the above embodiment. It can be returned to the ground.
[0028]
In the above embodiment, the segment gripping machine 3 of the portal crane 2 is shown to grip the segment 7 for one piece. However, depending on the structure of the segment gripping machine 3, two pieces or three pieces are used. It is also possible to hold the parts in piles, and as the drive mechanism of the shuttle server 8, it is possible to adopt a mechanism other than that shown in the figure, and various other modifications within the scope not departing from the gist of the present invention. Of course, can be added.
[0029]
【The invention's effect】
As described above, according to the segment conveying apparatus of the present invention, the following excellent effects are exhibited.
(1) A lift-type guide in which a portal crane is arranged so that it can pass above the shaft, the gate crane is provided with a segment gripping machine, and the vertical movement of the segment gripping machine is guided at the bottom of the shaft. Is placed at a height up to the ground, and a segment temporary table is installed in the tunnel, and the segment received from the segment gripper is transported at the lower end position of the lifting guide to move the segment on the segment temporary table. Since it has a configuration including a shuttle server to be transferred to the bottom of the shaft, it is possible to reduce the cost without using a conventional heavy equipment lift device to transport the segment to the bottom of the shaft. Because the segment gripper can return to the ground immediately after unloading the segment, the cycle time for carrying in the segment can be shortened. Working efficiency can be improved, further, the shuttle server can efficiently transfer causes the segments to move to the segment temporary support table position in the tunnel.
(2) As the segment conveying space required at the bottom of the vertical shaft so downhole conveyance carriage or shuttle server may if only space to move linearly, it is possible to effectively utilize the other space.
(3) The segment temporary table is configured by arranging a pair of left and right frames in parallel, and the shuttle server is provided with a jack that can be moved up and down by a jack on the cart, and has a width dimension that can enter between the left and right frames. With this configuration, the segment is temporarily placed by moving the shuttle server between the frame of the segment temporary placement stand with the stand carrying the segment raised, and lowering the stand at that position. It can be easily transferred up.
[Brief description of the drawings]
FIG. 1 is a schematic side view showing an embodiment of a segment conveying apparatus 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.
4 is an enlarged view in the direction of arrows IV-IV in FIG. 2;
FIG. 5 is an enlarged view in the VV direction of FIG.
FIG. 6 is an enlarged view of the shuttle server.
7 is a side view of FIG. 6. FIG.
8 is a plan view of FIG. 7. FIG.
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, where 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 type crane 3 Segment gripping machine 4 Lifting guide 5 Tunnel 6 Segment temporary stand 7 Segment 8 Shuttle server 17 Frame 30 Bogie 31 Receiving base 32 Jack

Claims (2)

A portal crane is arranged so that it can pass above the shaft, the portal crane is equipped with a segment gripper, and a lift guide that guides the lift of the segment gripper at the bottom of the shaft is Further, a segment temporary table is installed in the tunnel, the segment temporary table can be moved between the lower end position of the lifting guide and the segment received from the segment gripping machine. A segment transporting apparatus comprising a shuttle server that transports the transported part to the segment temporary placement table . Segment temporary base, a pair of right and left base frame and parallel side by side comprising configuration, claims the shuttle server, and the width dimension Hairikomeru between underframe of vertically movably provided and said right and left the cradle by a jack on the truck The segment conveying apparatus of 1 .

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