JPH1122396A - Segment transfer device - Google Patents

Abstract

(57) [Summary] [Problem] Even if a segment remains at the front end of the upper surface of the main frame, if there is an empty space in the middle part in the front-rear direction of the main frame, the segment transported from the rear of the tunnel can be removed. Provided is a segment transfer device that can be placed on a rear end portion of an upper surface of a main frame and sequentially packed forward, thereby improving the efficiency of the entire construction. SOLUTION: A front row conveyor 15A divided and formed into three groups.
The intermediate conveyor 15B and the rear row conveyor 15C are disposed rearward from the assembly position of the segment 6 by the erector 14 of the shield machine.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a segment transfer device for transferring 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 large-diameter tunnel.

[0002]

2. Description of the Related Art As this kind of segment conveying device,
Conventionally, for example, there is one described in the specification and drawings of Japanese Utility Model Application No. 4-67643, which is shown in FIG.
As shown in FIGS. 3 to 19, a rail 2 is laid on the inner peripheral bottom of the existing segment 1 already assembled in a circular shape so as to extend in the longitudinal direction of the tunnel.
The main frame 3 on which the segment 6 can be mounted is arranged via a number of wheels 4 so as to be able to advance on the rail 2 with the advance of the shield excavator. An up-down rail frame 8 is provided via a jack 7 so as to be able to move up and down. A segment transport frame 9 on which the segment 6 can be placed on the upper surface 12 is placed on the up-down rail frame 8 by the expansion and contraction operation of the transport jack 11. It has a configuration provided so as to be able to move forward and backward through wheels 10.

[0003] In the drawing, reference numeral 13 denotes a tail frame of a shield machine, and 14 denotes an erector for assembling the segment 6 into a circular shape on the inner periphery of the tunnel.

In the conventional segment transfer apparatus as described above, the lift-up jack 7 is contracted to lower the up-down rail frame 8 and the segment transfer frame 9 as shown in FIG. (Right side of FIG. 3), the segments 6 transported by a segment truck (not shown) are lifted by a hoist or the like (not shown) and suspended from above the main frame 3, and the segment transport frame 9 is lowered, and the segment transport is performed. The upper surface 12 of the frame 9 is the upper surface 5 of the main frame 3
The suspended segment 6 is placed on the upper surface 5 of the main frame 3.

Subsequently, as shown in FIG. 15, when the lift-up jack 7 is extended, the up-down rail frame 8 and the segment transport frame 9 are raised, and the upper surface 12 of the segment transport frame 9 is moved to the upper surface 5 of the main frame 3.
The upper surface 5 of the main frame 3
Are lifted by the upper surface 12 of the segment transport frame 9, and the segment 6 is placed on the upper surface 12 of the segment transport frame 9.

[0006] Next, as shown in FIG.
1 is extended, the segment transport frame 9 moves forward with the segment 6 placed on the upper surface 12, and after the transport jack 11 is in the most extended state, FIG.
When the lift-up jack 7 is contracted to lower the up-down rail frame 8 and the segment transfer frame 9 as shown in FIG.
Since 2 is at a position lower than the upper surface 5 of the main frame 3, the segment 6 is placed on the upper surface 5 of the main frame 3 at the advanced position, and when the transport jack 11 is contracted in this state, While the segment 6 is placed on the upper surface 5 of the main frame 3 at the advanced position, only the segment transport frame 9 retreats.

Then, as shown in FIG. 18, when the next segment 6 is lifted by a hoist or the like (not shown) and lowered from above the main frame 3, two segments 6 and 6 are formed on the upper surface 5 of the main frame 3. Are placed side by side. Here, the lift-up jack 7 is extended again to raise the up-down rail frame 8 and the segment transport frame 9, and then the transport jack 11 is extended. When the lift-up jack 7 is contracted to lower the up-down rail frame 8 and the segment transfer frame 9, the two segments 6 Will be placed on the upper surface 5 of the main frame 3 at the position where the main frame 3 has moved forward while being arranged side by side.

As described above, the segments 6 are suspended from above the main frame 3, the lift-up jacks 7 are extended, the transport jacks 11 are extended, and the lift-up jacks 7 are extended.
By repeating the contraction of the main frame 3 and the contraction of the transport jack 11 as shown in FIG.
A large number of segments 6 are arranged side by side, and these many segments 6 can be sequentially conveyed toward the erector 14, and the segments 6 arranged side by side on the upper surface 5 of the main frame 3 as shown in FIG. 19 is passed to the erector 14 by a device (not shown) that is closest to the erector 14 (leftward in FIG. 19).

[0009]

However, in the above-described conventional segment transport apparatus, one long segment transport frame 9 extending in the front-rear direction is driven to advance the segments 6 by one pitch. Therefore, for example, in the case where the segment 6 remains at the front end of the upper surface 5 of the main frame 3, even if there is an empty portion in the front-rear direction intermediate portion of the main frame 3, a segment not shown It is possible to lift the segment 6 transported by the cart with a hoist or the like (not shown) and place it on the rear end of the upper surface 5 of the main frame 3.
Cannot be forwarded, and therefore cannot be delivered even if the next segment 6 is carried by the segment truck, and the segment truck is forced to stop and wait, hindering the entire construction. Had the disadvantage that

[0010] In view of such circumstances, the present invention conveys from the rear of the tunnel even if a segment remains at the front end of the upper surface of the main frame as long as there is an empty space in the front-rear middle part of the main frame. An object of the present invention is to provide a segment transport device that can put the completed segments on the rear end portion of the upper surface of the main frame and sequentially pack the segments forward, thereby improving the efficiency of the entire construction.

[0011]

SUMMARY OF THE INVENTION The present invention provides a main frame on which a required number of segments can be mounted on an upper surface, an up-down rail frame provided on the main frame via a lift-up jack, and an up-down rail frame. While the upper surface is provided so as to be able to move forward and backward on the down rail frame, and when the lift-up jack is extended, the upper surface can rise above the upper surface of the main frame to mount the segment,
When the lift-up jack is contracted, a plurality of conveyors having a segment conveying frame whose upper surface is lower than the upper surface of the main frame are provided rearward from a segment assembly position by an erector of a shield machine, The segment mounted on the front end of the upper surface of the main frame of the conveyor can be transferred to the rear end of the upper surface of the main frame of the conveyor located on the front side by operating the segment transport frame. It relates to a segment transport device.

According to the above means, the following effects can be obtained.

[0013] After the segments transported by the segment truck from the rear of the tunnel are placed on the rear end of the upper surface of the main frame of the conveyor located in the last row, the lift-up jacks of the conveyor located in the last row are extended. The segment transport frame rises with the up-down rail frame and the segment is supported on its upper surface,
In this state, when the segment transport frame is advanced on the up-down rail frame, the segment advances while being mounted on the upper surface of the segment transport frame, and subsequently, when the lift-up jack is contracted, the segment moves in the advanced position. The required number of segments are placed on the upper surface of the main frame of the conveyor positioned in the last row by repeating the above-described operation while being supported on the upper surface of the main frame of the conveyor positioned in the last row.

Thereafter, as described above, the lift-up jack of the conveyor located in the last row is extended, the segment transport frame is advanced on the up-down rail frame, and the lift-up jack is contracted. The segment placed on the front end of the upper surface of the main frame of the located conveyor is transferred to the rear end of the upper surface of the main frame of the conveyor located on the front side.

[0015] Hereinafter, by repeating the same operation as in the case of the conveyor positioned in the last row in each conveyor, the segments can be sequentially conveyed to the erector.

On the other hand, it is assumed that a segment remains at the front end of the upper surface of the main frame of the conveyor positioned in the front row, and that the main frame of each conveyor positioned behind the conveyor positioned in the front row has an empty space. In this case, the segments conveyed by the segment truck from the rear of the tunnel are placed on the rear end of the upper surface of the main frame of the conveyor positioned in the last row, and then the conveyors other than the conveyor positioned in the front row are driven in the same manner as described above. Then, the segments are sequentially packed forward by one pitch at a time, and are transported to the rear end of the upper surface of the main frame of the conveyor located in the front row.

As a result, the segments transported by the segment truck can be sequentially delivered to the conveyor positioned in the last row, so that the segment truck does not need to stop and wait, and work can be performed smoothly. This will not hinder the entire construction.

[0018]

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

FIGS. 1 to 9 show an embodiment of the present invention. In the drawings, the portions denoted by the same reference numerals as those in FIGS. 13 to 19 represent the same components. FIG.
19 is similar to the conventional one shown in FIG. 19, but the feature of the illustrated example is that, as shown in FIGS. 1 to 9, a front row conveyor 15A, an intermediate conveyor 15B, and a rear row conveyor 15C divided and formed into three groups. To the shield machine erector 14
In that it is arranged rearward from the segment assembly position.

Each of the conveyors 15A, 15B and 15C is installed by a support member (not shown) at the upper part in the tunnel, and a required number (three in the illustrated example) of the segments 6 are provided on the upper surface 5 of the inner peripheral surface thereof. Frame 3, which can be placed downward, an up-down rail frame 8 provided on the main frame 3 via a lift-up jack 7, and the expansion / contraction of the transport jack 11 on the up-down rail frame 8. When the lift-up jack 7 is extended, the upper surface 12 can be raised above the upper surface 5 of the main frame 3 to mount the segment 6 when the lift-up jack 7 is extended. When the up jack 7 is contracted, the upper surface 12 is moved downward from the upper surface 5 of the main frame 3. Has Ete consisting configuration, each main frame 3, are connected by a connecting member 16.

The front end of the up-down rail frame 8 of the rear row conveyor 15C projects so as to be inserted into the rear end of the intermediate conveyor 15B.
The front end of the 5B up-down rail frame 8 projects so as to be inserted into the rear end of the front row conveyor 15A, and the segment 6 placed on the front end of the upper surface 5 of the main frame 3 of the rear row conveyor 15C is moved. The intermediate conveyor 15B located on the front side can be transferred to the rear end of the upper surface 5 of the main frame 3 by the operation of the segment transport frame 9 and the front end of the intermediate conveyor 15B on the upper surface 5 of the main frame 3 Can be transferred to the rear end of the upper surface 5 of the main frame 3 of the front row conveyor 15A located on the front side by the operation of the segment transport frame 9.

As shown in FIG. 2, the interval between the up-down rail frame 8 and the segment transport frame 9 of the intermediate conveyor 15B in the width direction is set to the up-down rail frame 8 and the segment transport of the front row and rear row conveyors 15A and 15C. Since the width of the frame 9 is wider than the width of the frame 9, the up-down rail frame 8 and the segment transport frame 9 of the intermediate conveyor 15B and the up-down rail frame 8 of the front and rear conveyors 15A and 15C.
And the segment transport frame 9 does not interfere.

Next, the operation of the illustrated example will be described.

As shown in FIG. 1, the lift-up jack 7 of the rear row conveyor 15C is contracted to lower the up-down rail frame 8 and the segment transport frame 9, and is shown from the rear of the tunnel (right side in FIG. 1). When the segment 6 transported by the unsegmented truck is lifted by a lifter or the like (not shown) and passed above the rear part of the main frame 3 of the rear row conveyor 15C, the segment transport frame 9 is lowered, and the segment transport frame 9 The upper surface 12 of the main frame 3 is lower than the upper surface 5 of the main frame 3, and thus the transferred segments 6 are placed on the rear end of the upper surface 5 of the main frame 3 of the rear row conveyor 15C.

Subsequently, when the lift-up jack 7 of the rear row conveyor 15C is extended, the up-down rail frame 8 and the segment transport frame 9 rise, and the upper surface 12 of the segment transport frame 9 is higher than the upper surface 5 of the main frame 3. 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 frame 9 because of the high position, and the segment 6 is placed on the upper surface 12 of the segment transport frame 9. become.

Next, when the transport jack 11 of the rear row conveyor 15C is extended, the segment transport frame 9 is moved.
Moves forward while the segment 6 is placed on the upper surface 12, and after the transport jack 11 is in the most extended state, the lift-up jack 7 is contracted to move the up-down rail frame 8 and the segment transport frame 9. When lowered, the upper surface 12 of the segment transport frame 9 is lower than the upper surface 5 of the main frame 3, so that the segment 6 is placed on the upper surface 5 of the main frame 3 at the advanced position. And the transport jack 11
Is contracted, only the segment transport frame 9 retreats while the segment 6 is placed on the upper surface 5 of the main frame 3 at the advanced position.

Thereafter, the next segment 6 is lifted by a lifter or the like (not shown) and passed over the rear portion of the main frame 3 of the rear row conveyor 15C, and the two segments are placed on the upper surface 5 of the main frame 3 of the rear row conveyor 15C. 6 and 6 are placed side by side. Here, the lift-up jack 7 is extended again to raise the up-down rail frame 8 and the segment transport frame 9, and then the transport jack 11 is extended. Two segments 6, 6
Are transported forward by the upper surface 12 of the segment transport frame 9 while being lined up. Subsequently, when the lift-up jack 7 is contracted to lower the up-down rail frame 8 and the segment transport frame 9, the two segments 6 are aligned. It is placed on the upper surface 5 of the main frame 3 at a position where the main frame 3 has moved forward.

Thus, the operation of receiving the segment 6 above the rear portion of the main frame 3 of the rear row conveyor 15C, extending the lift-up jack 7, extending the transport jack 11, contracting the lift-up jack 7, and contracting the transport jack 11 is performed. By repeating, a required number (three in the example in the figure) of the segments 6 are placed on the upper surface 5 of the main frame 3 of the rear row conveyor 15C as shown in FIG.

Thereafter, similarly to the above, the rear row conveyor 15
C lift-up jack 7 is extended (see FIG. 7),
When the transport jack 11 is extended (see FIG. 8) and the lift-up jack 7 is contracted (see FIG. 9), the segment 6 placed on the front end portion of the upper surface 5 of the main frame 3 of the rear row conveyor 15C becomes It is transferred to the rear end of the upper surface 5 of the main frame 3 of the intermediate conveyor 15B located on the front side.

Thereafter, by repeating the same operation as in the case of the rear row conveyor 15C in the intermediate conveyor 15B and the front row conveyor 15A, the segments 6 can be sequentially conveyed to the erector 14.

On the other hand, if the segment 6 remains at the front end of the upper surface 5 of the main frame 3 of the front row conveyor 15A and the intermediate frame 15B or the main frame 3 of the rear row conveyor 15C is vacant, the tunnel 6 The segment 6 transported from behind by a segment truck (not shown) is lifted by a lifter (not shown) or the like and placed on the rear end of the upper surface 5 of the main frame 3 of the rear conveyor 15C. When the intermediate conveyor 15C and the intermediate conveyor 15B are driven, the segments 6 are successively packed forward by one pitch, and the front conveyor 1
5A is transferred to the rear end of the upper surface 5 of the main frame 3.

As a result, the segments 6 carried by the segment truck can be sequentially transferred to the rear row conveyor 15C, and the segment truck does not need to stop and wait, and the work can be performed smoothly. In addition, it will not hinder the entire construction.

Thus, even if the segment 6 remains at the front end of the upper surface 5 of the main frame 3 of the front row conveyor 15A, if there is a vacancy in the intermediate frame 15B or the main frame 3 of the rear row conveyor 15C, the tunnel The segments 6 transported from the rear can be placed on the rear end of the upper surface 5 of the main frame 3 of the rear row conveyor 15C and sequentially packed forward, so that the efficiency of the entire construction can be improved.

In the illustrated example, the front conveyor 15A, the intermediate conveyor 15B, and the rear conveyor 15C, which are divided into three parts, are disposed above the tunnel, so that various truck sleepers are provided below the tunnel. Although the work of laying the rails and the rails becomes easy and leads to the improvement of the work efficiency, the conveyors 15A, 15B and 15C are not shown in FIG.
19 as in the conventional example shown in FIG.
May be arranged on rails 2 laid on the bottom of the inner circumference via wheels 4. In this case, a structure is adopted in which the outer surface of the segment 6 is placed on the main frame 3 with the outer surface facing downward. Needless to say.

In the illustrated example, the front conveyor 15A, the intermediate conveyor 15B, and the rear conveyor 15C, which are divided and formed into three units, are disposed substantially straight in the front-rear direction as shown in FIG. , The conveyors 15A, 15
It is also possible to arrange the B and 15C at a required angle in plan view, and in this case, in the construction of a curved tunnel, a straight and long segment as in the related art is used. Even if it is difficult to arrange the conveyors, the conveyors 15A, 15B and 15C can be arranged according to the curve of the tunnel, which is effective.

However, as described above, the conveyors 15A, 15A
In the case where B and 15C are arranged at a required angle in plan view, the segment 6 transferred from a lifter or the like to the rear end of the upper surface 5 of the main frame 3 of the rear row conveyor 15C, Main frame 3 of back row conveyor 15C
The segment 6 transferred from the front end of the upper surface 5 of the main frame 3 of the intermediate conveyor 15B to the rear end of the main frame 3 of the intermediate conveyor 15B, and the main body of the front row conveyor 15A from the front end of the upper surface 5 of the main frame 3 of the intermediate conveyor 15B. It is necessary to correct the position of each of the segments 6 transferred to the rear end of the upper surface 5 of the frame 3.

For this reason, when the conveyors 15A, 15B and 15C are arranged in accordance with the curve of the tunnel, as shown in FIGS. 10 to 12, the rollers 17 for supporting the segments 6 slidably in the front-rear direction. The yaw centering unit 18 for correcting yawing of the segment 6 about the vertical axis by pushing a required position of the front and rear end surfaces of the segment 6 while the segment 6 is supported on the rollers 17, and the lifting jack 19. An elevating roller 20 that is arranged to be able to move up and down by an expansion and contraction operation and supports the segment 6 so as to be slidable in the circumferential direction thereof, and the both width end faces of the segment 6 with the segment 6 being supported on the elevating roller 20. Pressing segment 6
And a rolling centering unit 21 for correcting rolling centered on the center axis of the arc of each of the conveyors 15.
A, 15B, and 15C are respectively provided at required rear end positions.

The yawing centering unit 18
Is a yawing pressing member 18b pivotally attached to the yawing supporting bracket 18a, and a yawing pressing member 18b connected to the yawing pressing member 18b.
and a yaw jack 18c for pressing the front end of the segment b against the front end face or the rear end face of the segment 6 to correct the yawing of the segment 6.

The rolling centering unit 21 includes a rolling pressing member 21b pivotally attached to the rolling support bracket 21a and a segment connected to the rolling pressing member 21b and a tip end of the rolling pressing member 21b. And a rolling jack 21c for pressing the left or right width end face of the segment 6 to correct the rolling of the segment 6.

FIGS. 10 to 12 show a back row conveyor 1.
5C shows an example in which the roller 17, the yawing centering unit 18, the elevating roller 20, and the rolling centering unit 21 are disposed at the rear end, but the intermediate frame 15B and the front row conveyor 15A are also provided with the main frame 3, Up-down rail frame 8
The roller 17, the yawing centering unit 18, the elevating roller 20, and the rolling centering unit 21 may be provided so as not to interfere with the segment transport frame 9.

When correcting the position of the segment 6 transferred to the rear end of each of the conveyors 15A, 15B, 15C, first, with the segment 6 supported on the rollers 17, each yawing centering unit 18 When the yawing jack 18c is extended, the leading end of the yawing pressing member 18b is pressed against the front end surface or the rear end surface of the segment 6, and the segment 6 slides on the roller 17 in the direction of turning around the vertical axis. After the segment 6 is corrected for yawing, the lifting jack 19 is extended, the lifting roller 20 is raised by a required amount, and the segment 6 is supported on the lifting roller 20. When the rolling jack 21c is extended, the tip of the rolling pressing member 21b is Pressed against the width edge of the left and right segment 6, slides in the direction of the segment 6 is swung about the central axis of the arc of the segment 6 on the lift roller 20, rolling correction of the segment 6 is performed.

By doing so, the conveyors 15A, 15A
Even when B and 15C are arranged with a required angle when viewed in a plane, the segment 6 can be connected to each of the conveyors 15A and 15C.
In B and 15C, the segment 6 is conveyed while maintaining the correct posture, so that the segment 6 can be conveyed smoothly. In addition, there is always a curve in the shield tunnel, but if you place each conveyor on a separate bogie that goes along a sharp curve, you can build a system that can automatically transport segments following the curve. it can.

The segment conveying device of the present invention is not limited to the above-described example, and the number of conveyors to be divided and formed may be two or three or more. The number of segments placed on the frame may be two or three or more,
In addition, it goes without saying that various changes can be made without departing from the spirit of the present invention.

[0044]

As described above, according to the segment conveying apparatus of the present invention, even if a segment remains at the front end of the upper surface of the main frame of the conveyor located in the front row, If there is a vacancy in the main frame of the conveyor located behind the conveyor located at the end, the segments conveyed from the rear of the tunnel are placed on the rear end of the upper surface of the main frame of the conveyor located at the last row, and sequentially packed forward. This can provide an excellent effect that the efficiency of the entire construction can be improved.

[Brief description of the drawings]

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

FIG. 2 is a plan view of an example of an embodiment of the present invention.

FIG. 3 is a view taken in the direction of arrows III-III in FIG. 1;

FIG. 4 is a view taken in the direction of arrows IV-IV in FIG. 1;

FIG. 5 is a view taken in the direction of arrows VV in FIG. 1;

FIG. 6 is a side view of a first stage showing an operation state when a segment is transferred from a rear row conveyor to an intermediate conveyor in an example of an embodiment of the present invention.

FIG. 7 is a side view of a second stage showing an operating state when a segment is transferred from a rear conveyor to an intermediate conveyor in an example of an embodiment of the present invention.

FIG. 8 is a side view of a third stage showing an operation state when a segment is transferred from a rear row conveyor to an intermediate conveyor in an example of an embodiment of the present invention.

FIG. 9 is a side view of a fourth stage showing an operating state when the segments are transferred from the rear row conveyor to the intermediate conveyor in an example of the embodiment of the present invention.

FIG. 10 is a side view showing an apparatus for correcting a segment position provided at a rear end of a conveyor in an example of an embodiment of the present invention.

FIG. 11 is a view as viewed in the direction of arrows XI-XI in FIG. 10;

12 is a view taken in the direction of arrows XII-XII in FIG. 10;

FIG. 13 is a side view of a conventional example.

FIG. 14 is a view taken in the direction of arrows XIV-XIV in FIG. 13;

FIG. 15 is a side view showing the next operation state of FIG. 13 when a segment is transferred in the conventional example shown in FIG.

FIG. 16 is a side view showing the next operation state of FIG. 15;

FIG. 17 is a side view showing the next operation state of FIG. 16;

FIG. 18 is a side view showing the next operation state of FIG. 17;

FIG. 19 is a side view showing the operation state further continued from FIG. 18;

[Explanation of symbols]

 3 Main frame 5 Upper surface 6 Segment 7 Lift-up jack 8 Up-down rail frame 9 Segment transport frame 12 Upper surface 14 Elector 15A Front row conveyor (conveyor) 15B Intermediate conveyor (conveyor) 15C Rear row conveyor (conveyor)

Claims (1)

[Claims] A main frame on which a required number of segments can be placed; an up / down rail frame provided on the main frame via a lift-up jack; And when the lift-up jack is extended, the upper surface can rise above the upper surface of the main frame to mount the segment, while when the lift-up jack contracts, the upper surface is higher than the upper surface of the main frame. A plurality of conveyors having a descending segment transport frame are arranged rearward from a segment assembling position by an erector of a shield excavator, and a segment mounted on a front end of an upper surface of a main frame of the conveyor, The conveyor main frame located on the front side by the operation of the segment transport frame A segment transport device configured to be transferable to a rear end portion on an upper surface of a frame.