JPS61237800A - Segment automatic feeder - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a novel segment automatic supply device that automatically supplies segments to a segment assembly device of a shield tunneling machine.

C. Prior Art] Generally, a segment assembly device for assembling segments along the inner wall surface of an excavation pit is provided at the rear of a shield excavator so as to be freely rotatable in the circumferential direction.

Therefore, as long as the segments are supplied to the assembly device, the segments can be easily transported and assembled to the desired location on the wall surface of the excavation pit.

[Problems to be solved and attempted by the invention] However, the segments are very heavy (e.g. with an outer diameter of 5
m segments weighs about 2 tons), so it is not easy to feed the above segment assembly equipment.

For this reason, in the past, a truck was used to transport the segment from the rear of the excavation shaft to the vicinity of the segment assembly device, and then a hoist or the like was used to lower the segment from the truck and transport it below the segment assembly device. was positioned and gripped by the segment assembly device.

However, even if a hoist or the like was used, workers had to handle the segments directly, which had the disadvantage of poor work efficiency and a long time required to assemble the segments, as well as being dangerous. .

[Object of the Invention] The present invention has been made to solve the above-mentioned problems of the prior art, and its purpose is to be able to quickly and accurately supply segments to a segment assembly device, thereby improving work efficiency and safety. An object of the present invention is to provide an automatic segment feeding device that can improve the performance.

[Summary of the Invention] In order to achieve the above object, the present invention does not simply provide a segment conveying device for carrying and conveying a plurality of segments in close proximity to a segment assembly device, but if it were done in this way, the segment assembly device would rotate. Based on the knowledge that it is necessary to move the heavy segment transport device backwards and forwards each time to avoid interference with the device, the segment transport device is placed behind the segment assembly device with a predetermined gap to prevent further interference. A segment transfer device is provided at the discharge end of the segment transfer device for reciprocating from the segment transfer device to the pigment receiving portion provided at the upper periphery of the segment assembly device to control the position and deliver the single segment. It was established.

[Example] An example of the present invention will be described below in detail based on the accompanying drawings.

As shown in FIG. 1, a segment assembly device 3 is provided at the rear part of the shield frame 2 of the shield tunneling machine 1 so as to be able to freely rotate along the circumferential direction thereof. This segment assembly device 3 includes an annular swing ring 4 rotatably supported within a shield frame 2, a hanging beam 5 provided on the swing ring 4 so as to be movable in the radial direction, and It is mainly composed of a segment mounting table 6 provided therein. In particular, the segment assembly device 13 is configured to receive the segment S with the segment mounting table 6 in the uppermost pivoted position, and the segment mounting table 6 at that position
constitutes the receiving section 7 of the segment S. The segment mounting table 6 is configured to receive a single arcuate segment S with its concave surface facing down, and further includes a holding mechanism 8 for holding the received segment S.

The segment automatic supply device according to the present invention has the above-mentioned receiving section 7.
In contrast, there is provided a segment conveyance device 10 that conveys the segment S from the rear of the excavation shaft 9 in advance with the concave surface facing down.

The inner wall surface of the excavation shaft 9 excavated by the shield excavation l11 is covered with segments S assembled by the segment assembly device 3, and the inside of the excavation shaft (shaft) 9 divided by the segments S is filled with materials and excavated soil. Rails 11 for transporting items such as those on a trolley are laid through cross members 12. The segment conveyance unit [10 is mainly composed of a long running carriage 13 that runs on the rails 11, and a segment conveyance unit 14 that is provided on the running carriage 13 along its longitudinal direction. As shown in FIG. 2, the traveling truck 13 includes a truck frame 15 having an opening 100 through which an excavated soil transport conveyor or the like can pass through approximately the center of the excavation shaft 9. Transferring wheels 1
6 is provided.

The segment conveyance section 14 has an underframe 17 formed on the trolley frame 15 continuously and substantially horizontally from its rear end to near the front end on the shield tunneling machine 1 side, and at a height substantially equal to that of the receiving section 7. As shown in FIGS. 3 and 5, rollers 18 are disposed at appropriate intervals in the longitudinal direction on both sides of the upper part of the underframe 17 to receive the segments S and move them smoothly.

These rollers 18 are made of a soft material such as synthetic resin so as not to damage the segments S.

In addition, a pair of left and right guide plates that are continuous in the longitudinal direction are protruded from the upper central part of the underframe 17, and the segment S is guided by being engaged between the guide plates 19 at the concave central part of the segment S. The engaging portion 20 is formed in a convex shape.

The engaging portion 2o of the segment S may be formed into a concave shape that is engaged with and guided by both guide plates 19 instead of being convex.

As shown in FIG. 3, the center portion of the front end of the underframe 17 extends forward, and a delivery frame 32 in the shape of a planar entrance, which constitutes a frame of a segment delivery device 22 to be described later, can be freely engaged and detached from this extension portion 21. is engaged with.

As a means for conveying the segment S supported on the underframe 17 via the O-ra 18, a portion is provided between the guide plates 17 at the tip end of the extending portion 21 and the rear end of the underframe 17, respectively. A driven sprocket 23 and a driving sprocket 24 are provided at the same position, and the upper chain portion of the endless chain 25, which is stretched between these two sprockets 23 and 24, is provided with a driven sprocket 23 and a driving sprocket 24, as shown in FIGS. 1, 5, and 6. (Feeding members 26 that come into contact with the rear end of the segment S and push it forward (in the direction of the shield tunnel machine) are provided at appropriate intervals. In particular, the feeding members 26 swing into the bin 27 of the chain 25. A weight 28 is provided at the proximal end of the feed member 26 for urging the distal end into an upright state.When the feeding member 26 pushes the rear end of the segment S, the weight 28 is attached to the chain. Although it does not engage with the lower surface of 25 and fall down, if it is pushed by the tip of the succeeding segment S, as shown in FIG. 6, it falls forward to allow that segment S to pass. There is.

Incidentally, the row arms 29 are provided at appropriate intervals on both sides of the chain, and are supported by the guide grooves 30 on both sides.

The chain 25 is intermittently rotated back and forth, so that the forward movement of the sending member 26 sends the segment S forward, and the backward movement passes under and behind the following segment S, leading to the next forward movement. The segment S is then sent forward. Ml is drive sprocket 24
This is the motor that drives the.

The traveling carriage 13, which is the segment transport device 10 configured as described above, is placed at a predetermined gap from the segment assembly device 3 so as not to interfere with the turning and assembly operations of the segment assembly device 3. Then, from the unloading end of the segment transport device e10, the segment assembly device @
In order to deliver a single segment S to the receiving section 7 of No. 3 while regulating its position, a segment delivery device 22 is provided at the front end of the traveling carriage 13.

The segment delivery device 22 consists of a truck with wheels 33 attached to the lower part of a delivery frame 32, and these wheels 33 are supported on a rail 34 provided between the front end of the traveling truck 13 and the underframe 17. There is. In particular, the front end of the delivery frame 32 extends further forward than the front wheels 33, so that when the delivery frame 32 moves to the frontmost position, it crosses the distance gAL and approaches the receiving section 7. .

In addition, 1 in front of rail 34! & A stopper 35 is formed at the end.

The delivery frame 32 is formed to have approximately the same width and height as the underframe 17, and has rollers 38, which are the same as the rollers 18, provided at appropriate intervals on both sides of its upper part, and is connected to the guide plate 19 in the center. Guide plate 39 with the same configuration
is provided.

Further, as a means for reciprocating the delivery frame 32,
A cylinder 36 is provided on the underframe 17, and the tip of a piston rod 36a of the cylinder 36 is connected to the delivery frame 32. Furthermore, the transfer frame 32 has rollers 38 thereof.
A button 40 is provided for transferring the segment S placed thereon to the receiving section 7, and a stopper 41 is provided at the front end of the delivery frame 32 to prevent the segment S from falling during transportation. It is set up so that you can come and go as you like.

As shown in FIGS. 4 and 7, the bushing 4o has a running section 43 which is located inside the rollers 38 on both sides and is movable along the longitudinal direction of the delivery frame 32. It is mainly composed of a push rod 45 provided upwardly via a parallel link 44 so as to be freely retractable.

The push rod 45 is supported on and parallel to the delivery frame 32 and extends forward from the running section 43.

A spring 46 for pulling the parallel link 44 rearward is attached to the traveling portion 43, and a stopper 47 is provided for resisting the spring force and abutting and holding the parallel link 44 in an upright state. When pushed by S, the parallel link 44 falls forward against the spring force, and the pushbutton 45 is lowered to allow the segment S to pass. The running portion 43 has rows 550 on both sides, and these rows 550 are movably engaged with guide grooves 51 provided in the delivery frame 32. As a means for reciprocating the running section 43, screw rods 52 are disposed on the delivery frame 32 in parallel to and below the guide groove 51, and the running section 43 has a nut section that is screwed onto the screw rod 52. 53 are provided. Both screw rods 5 are installed at the front end of the delivery frame 32.
The motor M2 and both screw rods 52 are connected via a chain 54.

On the other hand, the segment mounting table 6 is provided with a roller 48 made of the same material as the row 518 that movably supports the segment S pushed out by the busher 40.
A guide plate 49 that engages and guides the engagement groove 20 of the segment S is provided. Further, the segment mounting table 6 is provided with a stopper 55 for stopping the segment S pushed out by the pusher 40 at a fixed position.

Next, we will discuss the effect.

The segment transport device 10 follows the propulsion of the shield excavator 1 and travels from the segment assembly device 3 with a predetermined gap. The segment conveyance section 14 is driven by a motor M.
1, the chain 25 is intermittently rotated back and forth, thereby reciprocating the sending member 26 back and forth. In this state, when the segment S is placed on the upper rear end of the underframe 17, which is the carry-in end 14a of the segment conveyor 14, the feeding member 26 moves forward to send the segment S forward, and the next feeding member 26 moves backward. By repeating the cycle of passing through the lower part of the segment S, going around the rear part of the segment S, and moving forward again, the segments S are sequentially sent forward.

At this time, the delivery frame 32 of the segment delivery device 22 is connected to the discharge end 14b of the segment transport section 14 and is on standby, and the busher 40 is in a waiting state where it has been sent to the rearmost position. In this state, when the segment S is sent, the bushing 40 first succumbs to the pushing force of the segment S and falls down, allowing the segment S to pass, and the segment S
0 and is sent forward by the sending member 26. At this time, a stopper 41 at the front end of the delivery frame 32 is projected to prevent the segment S from falling. Once the segment transport section 14 supplies a single segment S to the delivery frame 32, it stops operating until the delivery frame 32 delivers the segment S to the receiving section 7 and returns.

Once the segment S is placed on the delivery frame 32,
The bushing 40 is moved forward by the rotation of the screw rod 52, and the segment S is clamped and fixed between the bushing 40 and the stopper 41. The segment delivery device 22 waits in this state until the segment mounting table 6 of the segment assembly device 3 completes the assembly of the preceding segment and returns to the receiving section 7.

When the segment mounting table 6 returns to the receiving section 7, the segment transfer device 22 moves forward by the drive of the cylinder 36, fills the 1 m gap between the segment assembly device W13 and the segment transport device 10, and transfers the segment S to the segment assembly device. 3 so that it can be easily delivered to the receiving section 7. Next, the stopper 41
After retracting, the button 40 is advanced to push out the segment S until it comes into contact with the stopper 55 of the receiving section 7, as shown in FIG. 8, thereby completing the delivery of the segment S. When the delivery of the segment S is completed, the pusher 40 and the segment delivery device 22 are moved backward, the stopper 41 is protruded, and returned to the original standby position, the segment conveyance section 14 is restarted, and the same procedure is repeated sequentially. The segments S can be accurately supplied to the segment assembly device 3 for continuous segment assembly work.

Note that when excavating a curved excavation shaft, the axes of the guide plate 49 of the receiving section 7 and the guide plate 39 on the delivery frame 32 are misaligned. It may be configured so that the position can be freely changed on the trolley 13.

In the embodiment, the feed member 26 is attached only to the upper side of the chain 25 to rotate the chain reciprocally, but the feed member 26 is attached to the entire chain 25 to rotate the chain 25 in a reciprocating manner.
The segments may be rotated in the same direction. In this case, it is preferable to reduce the height of the segment conveying section 14 by folding the feeding member 26 at the lower side of the chain 25. Further, the height of the segment conveying section 14 can be further reduced by using a linear chain instead of an endless chain and connecting cylinders to both ends of the chain to cause the chain to reciprocate.

In the embodiment, the bushing 40 is made to protrude and retract by means of a parallel link 44, but as shown in FIG. 9, the bushing 40 is constituted by a swinging link 60 and a weight 61 is provided at the rear end, so that the front end part can be made to protrude and retract. It may be configured as follows.

[Effects of the Invention] In summary, the present invention exhibits the following excellent effects.

(1) A segment transport device is arranged at the rear of the segment assembly device with a predetermined gap that does not interfere with the segment transport device, and the segment transfer device is reciprocated from this to the segment receiving section provided at the upper peripheral edge of the segment assembly device at the delivery end of the segment transportation device. Since a segment delivery device is provided to control the position of a single segment and deliver it, segments can be quickly and accurately fed to the segment assembly device with a simple operation of reciprocating the segment delivery device. can do.

(2) Therefore, it is possible to automate segment assembly, and it is possible to improve safety, improve segment assembly accuracy, reduce the number of workers required, and improve work ability.

[Brief explanation of drawings]

FIG. 1 is a side view of an automatic segment feeding device showing an embodiment of the present invention, FIG. 2 is a front view of the same, FIG. 3 is a plan view of the same, FIG. 4 is an enlarged front view of a segment delivery device, and FIG. The figure is an enlarged front view of the segment conveyance unit, Figure 6 is a side view of the same main part, Figure 7 is a side view of the pusher of the segment delivery device, Figure 8 is a side view showing the segment delivery situation, and Figure 9 is a side view of the segment transfer unit. It is a side view which shows the modification of a segment feeding member. In the figure, 1 is a shield excavator, 3 is a segment assembly device,
7 is a receiving part, 9 is an excavation pit, 10 is a segment conveyance device,
22 is a segment delivery device. Patent Applicant: Tokyo Electric Power Company, Inc. Ishikawajima Har*ti Industry Co., Ltd. Representative Patent Attorney: Nobuo Kinuya Figure 2 Figure 3 Figure 4 Figure 5

Claims (1)

[Claims] A segment assembly device that is rotatably provided at the rear of the shield tunneling machine along its circumferential direction and has a segment receiving portion along its upper peripheral edge; A segment conveying device is provided at the discharging end of the segment conveying device to convey the segments from the rear of the excavation shaft, and the segment conveying device is provided at the unloading end of the segment conveying device, and is reciprocated from this to the receiving section to regulate the position of the single segment. An automatic segment supply device comprising: a segment delivery device for delivery to a receiving section.