JP2562649Y2 - Segment transfer device - Google Patents

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 for transporting a segment from the rear to a segment assembling position by an erector of a shield excavator in a shield construction method for excavating a tunnel having a large diameter.

[0002]

2. Description of the Related Art In a shield method for excavating a large-diameter tunnel, when a segment assembled around a space excavated by a shield excavator is transported, conventionally, a segment carried on a trolley and carried from behind is hoisted. , The segments are lowered on the roller conveyor provided below the rear part of the shield machine, and the segments on the roller conveyor are grasped by the erector provided at the rear part of the shield machine to assemble the segments.

[0003]

However, since the roller conveyor needs to drive each roller, the driving device becomes large, and when the tunnel has a slope, the segment lowered onto the roller conveyor slides and moves. However, sometimes the direction changed and it could not be grasped by the Elekta.

The present invention eliminates such conventional disadvantages,
It is an object of the present invention to provide a segment conveying device in which a direction does not change by preventing a segment from slipping.

[0005]

According to the present invention, there is provided a segment transport device comprising: a main frame capable of moving forward and backward on an existing segment rearward from a segment assembling position by an erector of a shield machine and mounting the segment on an upper surface; An up-down rail frame provided on the main frame through the upper and lower rails, the upper surface of the up-down rail frame is provided so as to be able to move forward and backward when the lift jack extends, and the upper surface rises above the upper surface of the main frame. When the jack is contracted, the upper surface of the main frame is lower than the upper surface of the main frame, and the segment carrier can be placed on the upper surface of the main frame.

[0006]

When the segment carried from behind is lowered onto the upper surface of the main frame, and the lift jack is extended, the segment carrier is lifted together with the up-down rail frame so that the segment is supported on the upper surface of the segment carrier. Become.

When the segment carrier is advanced on the up-down rail frame, the segment advances while being mounted on the upper surface of the segment carrier, and when the lift jack is contracted, the segment moves to the upper surface of the main frame at the advanced position. Supported.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a side view of an embodiment of the present invention, and FIG. 2 is an enlarged front view of FIG. 1 as viewed from the direction II. A rail 2 is laid in the longitudinal direction of the vehicle, and a number of wheels 4 mounted on a main frame 3 which is long in the longitudinal direction of the tunnel are mounted on the rail 2, and the main frame 3 is on the left side of FIG. The main frame 3 is connected to the rear of the shield machine and advances on the rail 2 with the advance of the shield machine. 2 may be advanced. A material having a high coefficient of friction, such as urethane rubber, is attached to the upper surface 5 of the main frame 3,
1 can be lifted by a hoist (not shown) and placed on the upper surface 5 of the main frame 3.

The center of the main frame 3 is lowered as shown in FIG. 2, and an up-down rail frame 8 is provided here via a number of lift jacks 7.
On the up-down rail frame 8, a segment carrier 9 is provided via wheels 10. Both ends of the propulsion jack 11 are connected by pins between the rear portion of the segment transport vehicle 9 and the rear portion of the main frame 3, and a material having a high friction coefficient such as urethane rubber is used on the upper surface 12 of the segment transport vehicle 9. Affixed.

FIGS. 1 and 2 show a state in which the lift jack 7 is contracted, and the up-down rail frame 8 is at the lowered position, and accordingly, the segment carrier 9 is also lowered together with the up-down rail frame 8. The upper surface 12 of the segment carrier 9 is lower than the upper surface 5 of the main frame 3. When the lift jack 7 is extended, the up-down rail frame 8 is in the raised position, and the segment transport vehicle 9 also rises together with the up-down rail frame 8, and the upper surface 1 of the segment transport vehicle 9
2 is a position higher than the upper surface 5 of the main frame 3.

In FIG. 1, reference numeral 13 denotes a tail frame of a shield machine, and reference numeral 14 denotes an erector for assembling the segment 6 into a circular shape on the inner periphery of the tunnel.

Next, the operation will be described.

As shown in FIG. 1, the lift jack 7 is contracted to bring the up-down rail frame 8 and the segment carrier truck 9 into a lowered state, and are transported from the rear of the right tunnel in FIG. 1 by a truck (not shown). The segment 6 is hoisted by a hoist (not shown) and hung from above the main frame 3. At this time, the segment transport vehicle 9 is lowered, and the upper surface 12 of the segment transport vehicle 9 is located at a position lower than the upper surface 5 of the main frame 3, so that the suspended segment 6 is made of a material having a high friction coefficient. It will be placed on the upper surface 5 of the main frame 3 that has been attached.

Next, as shown in FIG. 3, when the lift jack 7 is extended, the up-down rail frame 8 and the segment carrier 4 are raised, and the upper surface 1 of the segment carrier 4 is moved upward.
2 is a position higher than the upper surface 5 of the main frame 3.
For this reason, the segment 6 placed on the upper surface 5 of the main frame 3 is lifted by the upper surface 12 of the segment transport vehicle 9, and the segment 6 is placed on the upper surface 12 of the segment transport vehicle 9 to which a material having a high coefficient of friction is adhered. Is placed.

Next, when the propulsion jack 11 is extended as shown in FIG.
The wheel 10 is rotated forward on the up-down rail frame 8 by being pushed forward by the
The vehicle advances forward with the segment 6 placed on the second.

After the propulsion jack 11 is in the most extended state, the lift jack 7 is contracted as shown in FIG.
Is moved downward, the upper surface 12 of the segment transport cart 9 is at a position lower than the upper surface 5 of the main frame 3, so that the segment 6 is moved forward to the upper surface 5 of the main frame 3.
Will be placed on the In this state, the propulsion jack 11
Is contracted, only the segment carrier 9 moves backward while the segment 6 is placed on the upper surface 5 of the main frame 3 at the advanced position.

Subsequently, as shown in FIG.
Is lifted up by a hoist (not shown) and suspended from above the main frame 3, two segments 6, 6 are placed side by side on the upper surface 5 of the main frame 3. Here, when the lift jack 7 is extended again to raise the up-down rail frame 8 and the segment transport vehicle 9 and then the propulsion jack 11 is extended, the two segments 6 and 6 are arranged side by side by the upper surface 12 of the segment transport vehicle 9. When being conveyed forward and the lift jack 7 is contracted to lower the up-down rail frame 8 and the segment carrier 4, the two segments 6 are placed on the upper surface 5 of the main frame 3 at the advanced position while being arranged side by side. Will be.

As described above, the operation of suspending the segment 6 from above the main frame 3, extending the lift jack 7, extending the propulsion jack 11, contracting the lift jack 7, and contracting the propulsion jack 11 is repeated.
As shown in (1), a large number of segments 6 can be placed side by side on the upper surface 5 of the main frame 3 and these large numbers of segments 6 can be sequentially conveyed to the erector 14. The main frame 3 on which the segment 6 is placed during the transport
The upper surface 5 and the upper surface 12 of the segment transport cart 9 are different from the conventional roller conveyor in that the direction of the segment 6 does not change due to sliding movement of the segment 6. In addition, the lift jack 7 and the propulsion jack 11 that operate to transport the segment 6 are driven only by hydraulic pressure and do not require electric wiring, so that they can withstand water discharge.

As shown in FIG. 7, the segments 6 placed side by side on the upper surface 5 of the main frame 3 are transferred to the erector 14 by a device (not shown) which is closest to the erector 14 (left side in FIG. 7). Each time, the segment 6 is suspended from above the main frame 3, the lift jack 7 is extended, the propulsion jack 11 is extended, the lift jack 7 is contracted, and the propulsion jack 11 is contracted to supply the segment 6 from behind. If the projecting portion is provided at the front of the segment transporting cart 9 as shown by a two-dot chain line in FIG. 7, the segment 6 can be directly grasped by the elector 14. Can be.

[0021]

According to the present invention, there is an effect that the orientation of the segment with respect to the erector can be reliably controlled without the direction of the segment changing as the segment slides during conveyance as in a roller conveyor.

[Brief description of the drawings]

FIG. 1 is a side view of an embodiment of the present invention.

FIG. 2 is an enlarged front view of FIG. 1 viewed from a direction II.

FIG. 3 is a side view showing a next operation state of FIG. 1;

FIG. 4 is a side view showing the next operation state of FIG. 3;

FIG. 5 is a side view showing a next operation state of FIG. 4;

FIG. 6 is a side view showing the next operation state of FIG. 5;

FIG. 7 is a side view showing a further operation state of FIG. 6;

[Explanation of symbols]

 3 Main frame 5 Upper surface 6 Segment 7 Lift jack 8 Up / down rail frame 9 Segment carrier 12 Upper surface

Claims (1)

(57) [Scope of request for utility model registration] 1. A main frame capable of moving forward and backward on an existing segment rearward from a segment assembly position by an erector of a shield machine and mounting a segment on an upper surface, and an up-lift provided on the main frame via a lift jack. A down rail frame, and an upper surface is provided on the up / down rail frame so as to be able to move forward and backward, when the lift jack is extended, the upper surface rises above the upper surface of the main frame, and when the lift jack contracts, the upper surface is the upper surface of the main frame. And a segment carrier having a lower surface than the lower surface and capable of mounting segments on the upper surface.