JPH0220320Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention is a segment supply device that is placed in a mine behind a shield excavator and is used to convey segments for constructing a mine to the shield excavator. It is related to.

[Prior Art] A shield excavator excavates underground, discharges the excavated earth, and excavates while constructing a tunnel by covering the inner wall surface of the tunnel with arc-shaped segments.

The shield frame of this shield tunneling machine is equipped with a segment assembly device for attaching the transported segments to the inner wall surface of the excavation hole. It is then transferred to an assembly device to assemble the segments. However, since there is a sand discharge device and various other equipment in the vicinity of the segment assembly equipment, it is not possible to transport one ring of segments at a time using a transport vehicle, so a hoist or similar device is used to transport the segments. It is necessary to guide the segments one by one to the predetermined position of the segment assembly device, but the
For example, a mine shaft with an outer diameter of 5 m weighs about 2 tons, and it is difficult to suspend the segment in the narrow space inside the mine near the assembly equipment and guide it to the specified position in the assembly equipment. It is dangerous as well.

For this reason, the present applicant has proposed a segment feeding device shown in FIGS. 14 and 15 that can relatively easily and accurately convey segments to predetermined positions in a segment assembly device.

14 and 15, 1 is a shield excavator, a cutter (not shown) for excavating underground is provided in front of the shield frame 2, and a shield excavator is provided behind the shield frame 2. 1
segment assembly device 6 for constructing a mine shaft 5 by covering the inner wall surface of the excavated hole with the segment 4;
is provided.

The segment assembly device 6 is used to assemble the shield frame 2
a swing ring 7 provided in the swing ring 7, a swing base 8 supported by the swing ring 7, a hanging beam 10 movable in the radial direction from the swing base 8 by a hydraulic cylinder 9;
It consists of a holding device 11 that is provided on the suspension beam 10 and that places and holds the segment 4 in a predetermined position.The segment 4 is delivered to the holding device 11 at the position shown in FIG.
The segment 4 is moved to a predetermined turning position by rotating the
By moving the holding device 11 through 0, the segments 4 are arranged one after the other in the circumferential direction to construct the mineshaft 5, as shown in FIG.

Segment supply device 12 that conveys the segments 4 onto the holding device 11 of this segment assembly device 6
However, the tunnel 5 built behind the shield tunneling machine 1
placed within.

This segment supply device 12 is connected to the traveling rail 1.
3, and rollers 1 disposed on the truck 14 to support the segments 4.
5, and a feeding device 17 for sequentially conveying the segments 4 supported by rollers 15 to the segment assembly device 6. Trolley 14
is a bogie frame 1 running on a running rail 13
6, a fixed frame 18 provided on the rear of the truck frame 16, and a delivery frame 19 movably provided in front of the truck frame 16. The rollers 15 are attached at appropriate intervals along the longitudinal direction of the fixed frame 18 and the delivery frame 19 of the trolley 14, and are mounted on both sides of the fixed frame 18 (and the delivery frame 19) as shown in FIG. It is attached and formed in a tapered shape along the concave surface of the segment 4.

The feeding device 17 includes a driven sprocket 20 and a driving sprocket 21 provided on the front and rear of the truck frame 16, an endless chain 22 extending endlessly between the sprockets 20 and 21, and an endless chain 22a above the driven sprocket 20 and the driving sprocket 21. It consists of sending members 23 which are provided at appropriate intervals and push the segments 4.

The endless chain 22, as shown in FIG.
Appropriate rollers 24 are attached to the upper and lower chains 22a and 22b, and the rollers 24 guide the endless chain 22 by sliding along guide rails 25 provided on the fixed frame 18.

Further, as shown in FIG. 13, the feed member 23 is pin-coupled to the link 26 of the upper endless chain 22a, has a feed pawl 27 above it that engages with the segment 4, and has a weight 28 at the bottom.
Furthermore, when the upper endless chain 22a moves in the conveying direction as shown by the arrow in the figure, the weight 28
is engaged with the link 26 to maintain the upright position so that the feed pawl 27 does not fall backward, and when the upper endless chain 22a is moved in the opposite direction to the conveyance direction, the segment located behind it If it hits segment 4, it will fall forward as shown by the two-dot chain line in the figure and be able to pass under the segment 4.

Further, a protrusion 4a is formed on the concave side of the segment 4, and the upper surface on the truck 14 side, that is, on the fixed frame 18 (and delivery frame 19), engages with the protrusion 4a of the segment 4 and is conveyed. Inside, a guide plate 29 that guides the segment 4 so that it does not shift.
is installed.

In order to transport the segments 4 to the segment assembly device 6 using the segment supply device 12 shown in FIG. 14 and FIG. 13 and hoisted up using a hoist (not shown) as appropriate, the segments 4 are placed on rollers 15 on a trolley 14 and conveyed one by one by a feeding device 17. In this case, by rotating the driving sprocket 21 that moves the endless chain 22 in the forward direction by a predetermined amount and then in the opposite direction, the feeding member 2 of the feeding device 17 is rotated.
3 is moved a predetermined distance toward the segment assembly device 6 and then returned to its original position, the segments 4 are sequentially fed into the feeding member 23 in the transport direction, and one ring of segments 4 is placed on the carriage 14. is placed as shown in FIG. In order to move the segment 4 that has been transferred onto the delivery frame 19 in this state to the segment assembly device 6, the push cylinder 31 attached to the fixed frame 18 is extended to move the delivery frame 19 to the position indicated by the two-dot chain line in the figure. After moving, the segment 4 can be easily guided to the holding device 11 of the segment assembly device 6 by pushing the segment 4 to the holding device 11 of the segment assembly device 6 using the pusher 32 provided on the delivery frame 19. After returning the pusher 32 and the pushing cylinder 31 to their original positions, the next segment 4 is transported to the delivery frame 19.
The segments 4 can be supplied to the assembly device 6 in sequence.

In this segment supply device 12, the supporting position of the segment 4 can match the segment delivery position of the segment assembly device 6, and by pushing the segment 4 with a pusher 32 etc., it can be easily transferred to the assembly device 6, unlike conveyance using a conventional hoist. segment 4
In addition, since the trolley 14 can move freely on the traveling rail 13 and the earth and sand discharge device (screw conveyor) of the shield excavator can be passed through the trolley 14, the assembly device 6 There is an advantage that the segments 4 can be directly conveyed as close as possible.

[Problems to be solved by the invention] However, the segment 4 from the transport vehicle 30
Segment supply device 1 by suspending it with a hoist etc.
When transferring the segment 4 to the carry-in end side of the segment 2, since the upper space is narrow, it is difficult to accurately guide the protrusion 4a of the segment 4 to the guide plate 29.

[Purpose of the invention] The present invention was made in consideration of the above-mentioned circumstances, and it is an object of the present invention to provide a segment feeding device that can easily perform the handing operation when delivering the segments from the carrier to the loading end of the segment feeding device. With the goal.

[Summary of the invention] In order to achieve the above-mentioned object, the present invention provides a device that is arranged in a tunnel behind a shield tunneling machine and transports segments to supply the shield tunneling machine from the rear of the tunnel. A trolley movably provided in the tunnel along its longitudinal direction;
A roller disposed on the upper surface of the trolley to support the segments movably along the trolley, a feeding device for transporting the segments supported by the rollers toward the shield tunneling machine, and a roller that is movably movable up and down at the segment loading end of the trolley. The lifter is provided with a lifter that raises the segment to the supporting height of the roller, and a pusher that is provided with the lifter and moves the segment on the lifter to the roller on the truck. By providing a lifter that raises the segment to the support height of the roller, it is possible to transfer the segment at the lowered position of the lifter, making positioning easier, and after raising the segment, the pusher sends the segment to the roller on the trolley. This makes it possible to easily and accurately feed the segments to the segment assembly device.

[Embodiment] Hereinafter, a preferred embodiment of the segment supply device according to the present invention will be described based on the accompanying drawings.

First, the overall structure of the segment feeding apparatus of the present invention is the same as that of the segment feeding apparatus shown in FIGS. 12 to 15, except for the input end side thereof.

That is, in FIGS. 7 and 8, reference numeral 13 denotes a traveling rail, and a bogie 14 is provided on the traveling rail 13 so as to be freely movable. The truck 14 includes a truck frame 16 that runs on the running rail 13, a fixed frame 18 that is integrally provided on the rear of the truck frame 16, and a delivery frame 19 that is movably provided in front of the truck frame 16. It consists of.
The roller 15 is attached to the fixed frame 18 of the trolley 14.
and are attached at appropriate intervals along the longitudinal direction of the delivery frame 19, and are formed in a tapered shape along the concave surface of the segment 4. Feeding device 17
A driven sprocket 20 and a driving sprocket 21 provided on the front and rear of the truck frame 16, an endless chain 22 extending endlessly between the two sprockets 20 and 21, and an endless chain 22a above the sprocket 22 are provided with appropriate intervals. It consists of a feeding member 23 which is placed one behind the other and pushes the segment 4.

The fixed frame 18 and the delivery frame 19 include
A protrusion 4a formed at the center of the concave surface of the segment 4
A guide plate 29 is provided which engages with and guides the segment 4 in the transport direction.

Further, the fixed frame 18 is provided with a push cylinder 31 for moving the delivery frame 19, and on the delivery frame 19 is provided a push cylinder 31 for feeding the segment 4 into the segment assembly device 6 shown in FIG.
2 is provided.

Now, in the present invention, a lifter 33 that can be raised and lowered is provided on the carry-in end side of the cart 14. As shown in FIGS. 1 to 3, the lifter 33 includes a lifting platform 34 that is vertically movable along the loading end side of the truck frame 16 of the truck 14 and the fixed frame 18 above the truck frame 16, and the lifting platform 34. It consists of a lifting device 35 for raising and lowering.

As shown in FIG. 1, the elevating table 34 is formed in a U-shape on a plane, with a recess 36 sandwiching the protrusion 18a of the fixed frame 18, and support rollers provided on both sides of the fixed frame 18. A support roller 15a is also provided on the lifting platform 34 so as to be aligned with the roller 15.

As shown in FIGS. 2 and 3, the lifting device 35 is
A frame body 37 is provided on both sides of the carry-in end of the truck frame 16, and a lifting hydraulic cylinder 38 is provided within the frame body 37.
A movable pulley 40 is provided at the rod end 39 of the wire 41, one end of the wire 41 is connected to the lifting platform 34, the center of the wire 41 is hung on the movable pulley 40, and the other end of the wire 41 is connected to the frame 37. The rod end 39 of the lifting hydraulic cylinder 38
By expanding and contracting the wire 41, the lifting platform 3
4, and is designed to be raised and lowered with a length that is twice its telescopic length.

The lifting table 34 is provided with a guide plate 29a that is aligned with the guide plate 29 on the fixed frame 18, and on both sides thereof, the segment 4 on the lifting table 34 is provided.
A pusher 42 is provided for pushing the feed member 23a located on the protrusion 18a of the fixed frame 18 to the rearmost sending member 23a.

As shown in FIGS. 4 to 6, the pusher 42 is composed of a claw member 43 that pushes the segment 4, a guide device 44 that guides the claw member 43, and a moving device 45 that moves the claw member 43. Ru.

The guide device 44 supports the support arm 43a of the claw member 43.
It consists of rollers 46 attached to both sides of the front and rear ends, and a guide beam 47 that guides the claw member 43 by sliding the rollers 46. Further, a traveling nut 48 coupled with a pin is provided at the lower end of the claw member 43, and a feed screw 49 is screwed into the traveling nut 48 and moves the claw member 43 back and forth via the traveling nut 48 by rotating in forward and reverse directions. is provided to constitute the moving device 45. Mobile device 4
5 further includes a feed screw 4 as shown in FIG.
A forward/reverse motor 50 for rotating 9 in the forward and reverse directions.
The forward/reverse motor 50 drives two feed screws 4 through a sprocket 51 and a chain 52.
9 are synchronized to rotate forward and reverse at the same speed.

The movement of the claw member 43 by this moving device 45 is as follows:
The position of the claw member 43 shown in FIG. 1 (rearmost position)
A guide beam 47 and a feed screw 49 are provided so that the feed device 17 can be moved forward from the position of the rearmost feed member 23a.

Next, the operation of the present invention will be explained.

As explained in FIGS. 14 and 15, the segment 4 is moved by the carrier 30 to near the carry-in end of the carrier 14.

In this case, the lifting platform 34 of the lifter 33 is held in the lowered position shown by the solid line in FIG. In this state, one of the segments 4 is placed on the lifting platform 34 using an electric hoist, chain block, etc., as shown in FIG. In this case, the segment 4 is placed so that the protrusion 4a of the segment 4 is positioned between the guide plates 29a of the lifting table 34, and is supported by the support rollers 15a of the lifting table 34, but since the lifting table 34 is in the lowered position. , the segment 4 has a large upper space and can be easily hung with a hoist, etc.
Positioning can be performed by guiding the

Next, when the segment 4 has been placed, the lifting device 35 of the lifter 33, that is, the lifting hydraulic cylinder 38, is extended upward as shown in FIG. 34 will be raised. The lifting height of the lifting table 34 is raised to a position where the support roller 15 on the cart 14 side and the support roller 15a of the lifting table 34 are at the same height, as shown in FIG. After adjusting the height of the lifter 33 in this way, the segment 4 is pushed in from the rearmost position of the claw member 43 of the pusher 42 to the front of the feeding member 23a of the feeding device 17, as shown in FIG. In this case, since the feed member 23 falls forward as explained in FIG. 13, the segment 4 is not caught by the rearmost feed member 23a, and the protrusion 4a is guided by the guide plates 29, 29a. However, it will be pushed all the way to the front.

After the segment 4 is transferred to the sending member 23a by the pusher 42 in this manner, the claw member 43 is returned to its original rearmost position. The forward and backward movement of the pawl member 43 is achieved by driving the forward/reverse motor 50 shown in FIG. The traveling nut 48 moves and moves the claw member 43. Also, this claw member 43
The roller 46 of the support arm 43a can smoothly move the segment 4 for moving along the guide beam 47.

Next, after returning the claw member 43 of the pusher 42 to the rearmost position, the segment 4 is moved to the rearmost feeding member 2 of the feeding device 17 as shown in FIG.
3a, by returning the feeding member 23a to its original position after moving it a predetermined distance, the segment 4 is transferred to the next feeding member 23. At the same time, the lifter 33 is lowered to the lowered position, and the above-mentioned Repeat the operation.

As described above, the segment 4 is placed on the lifter 33 and the pusher 42 at the lowered position of the lifter 33, the lifter 33 is raised, and the pusher 42 sends the segment 4 to the support roller 15 of the truck 14, thereby increasing the efficiency of the segment 4. It becomes possible to supply
As explained in FIGS. 14 and 15, the segment 4 is delivered to the segment assembly device 6.

Note that segment 4 is 6 as shown in FIG.
When assembling one ring of divided segments 4, the three A segments 4A located below
, a key segment 4K located at the top, and a B segment 4B whose end face is formed to engage with the key segment 4K and the A segment 4A.First, the A segment 4A is assembled, and then the B segment 4B is assembled. Segment 4B is assembled, and finally key segment 4K is assembled. Therefore, the order in which the segments 4 are sent to the segment supply device of the present invention is to send them in the above-mentioned assembly order, and also to
Now, sequentially from key segment 4K to A segment 4.
Stack it with A.

Although the key segment 4K is smaller than the other segments 4, as shown in FIG.
The spacing is formed so that this key segment 4K can also be supported.

[Effects of the Invention] As is clear from what has been described in detail above, the present invention provides the following excellent effects.

(1) A roller to support the segment is provided on the cart in line with the segment delivery position of the segment assembly device, and a lifter is provided at the carry-in end of the cart to raise the segment to the supporting height of the roller. The provision of a pusher for movement to the upper rollers allows the segments to be easily transported and assembled.

(2) Segments can be delivered at the lowered position of the lifter, improving work efficiency and safety, and facilitating automatic assembly of segments.

[Brief explanation of the drawing]

FIG. 1 is a plan view of essential parts showing an embodiment of the segment feeding device of the present invention, FIG. 2 is a front view of FIG. 1,
3 is a right side view of FIG. 2, FIG. 4 is a front sectional view showing details of the pusher in the present invention, FIG. 5 is a sectional view taken along the - line in FIG. 4, and FIG. 6 is a - - line arrow view, FIG. 7 is an overall front view of the segment feeding device of the present invention, FIG. 8 is a plan view of FIG. 7,
Figures 9, 10, and 11 are shown in the present invention.
A plan view illustrating the process of transferring segments from a lifter onto a cart; FIGS. 12 and 13 are detailed views of the feeding device of the segment feeding device of the present invention and the earlier application; FIG. 14 is a diagram of the segment feeding device of the earlier application. and an overall view of the shield tunneling machine, and FIG. 15 is a sectional view taken along the line -- in FIG. 14. In the figure, 1 is a shield tunneling machine, 4 is a segment,
5 is a pit, 14 is a truck, 15 is a roller, 17 is a feeding device, 33 is a lifter, and 42 is a pusher.

Claims (1)

[Scope of utility model registration request] It is placed in the tunnel behind the shield tunneling machine,
A device for transporting segments to supply the shield tunneling machine from the rear of the tunnel includes a truck movably provided in the tunnel along the longitudinal direction thereof, and a truck disposed on the upper surface of the truck and configured to move along the truck. A roller that movably supports the segment, a feeding device that transports the segment supported by the roller toward the shield excavator, and a feeder that is movably installed at the segment loading end of the truck to raise the segment to the support height above. 1. A segment feeding device comprising: a lifter that moves the segment on the lifter; and a pusher that is provided on the lifter and moves the segment on the lifter to a roller on a truck.