JPH0631559B2 - Automatic segment feeder - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic segment feeder for supplying a segment to an erector device (segment assembly device) arranged in a shield tail portion of a shield machine.

2. Description of the Related Art Conventionally, when supplying a segment to an erector device of a shield machine, a trolley is used to transport the segment from the rear of the tunnel to the vicinity of the erector device of the shield tail, and then a hoist or the like is used to transport the segment It was placed under the erector device and held by the pushing frame of the erector device.

Problems to be Solved by the Invention However, since the segment is for a tunnel with an outer diameter of about 8 m, the maximum piece weight is about 8 tons, and it is a heavy object, even if a hoist or the like is used, the operator directly The segment had to be dealt with, which was dangerous, and the work efficiency was poor.

The present invention solves the above problems, and an object of the present invention is to provide a segment automatic supply device that allows a worker to directly and safely supply a segment to an erector device without touching it directly.

Means for Solving the Problems In order to solve the above problems, the present invention provides a segment at an appropriate interval in the tunnel length direction on an arcuate upper portion along a tunnel periphery of a portal frame that is long in the tunnel length direction. A roller conveyor device having a supporting roller for supporting the inner peripheral surface of the roller conveyor device, a transfer device arranged at the rear part of the roller conveyor device for supplying segments to the roller conveyor device, and a roller arranged at the front part of the roller conveyor device. And a delivery device for supplying the segment on the conveyor device to the assembling device. A plurality of support rollers of the roller conveyor device are arranged in the circumferential direction of the tunnel, and the central support roller is directed toward the inner peripheral surface of the segment by the urging means. Drive roller that is urged to convey a segment and a step that can hold a small segment between the flanges by forming a flange on both outer ends. The attached rollers are arranged at predetermined intervals in the length direction of the tunnel.

Action In the above configuration, the segment is transferred to the roller conveyor device by the transfer device, is supported by the support roller on the upper portion of the portal frame and is conveyed forward along the tunnel length direction in a posture along the tunnel peripheral portion, The segment sent to the front part of the roller conveyor device is supplied to the segment assembling device by the delivery device.

According to the above configuration, the arc-shaped upper portion of the gate-shaped frame can be used to stably convey the segment along the arc direction, and at the center of the roller conveyor device, the stepped rollers arranged between the drive rollers can be used to make the step. By supporting a small segment between the flange portions of the attaching roller, a small segment can be simultaneously conveyed in addition to the normal segment, and the segment can be supplied very efficiently.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

1 and 2 are a schematic side view and a plan view of the automatic segment feeder. As shown in FIGS. 1 and 2, the automatic segment feeder comprises a transfer device 4 having a segment crane 2 and a segment lifter 3 for transferring the segment 1, and a front portion of the transfer device 4. Of the segment 1 from the transfer device 4 by means of supporting rollers 6, 7 and 8 arranged on the upper part of the portal frames 5A to 5C.
Of the shield machine 12 (FIG. 3) in front of the transfer device 11 and the transfer device 11 for transferring the segment 1 provided at the front of the roller conveyor device 10. The shield 13 includes an erector device (segment assembly device) 14 that is provided at the tail portion of the shield 13 and assembles the segment 1 from the delivery device 11. The delivery device 11, the roller conveyor device 10, and the transfer device 4 are excavated by the shield machine 12. It is configured to move following the movement of the erector device 14 associated with.

The details will be described with reference to FIGS. 1 to 10.

In the lower part of the tunnel 15 lined with a large number of segments 1, 1a, horizontal sleepers 16 are attached in a direction orthogonal to the tunnel length direction at predetermined intervals in the tunnel length direction. Is provided with a pair of left and right first rails 17 along the tunnel length direction and a pair of left and right second rails 18 inside the first rail 17.

In the segment crane 2 of the transfer device 4, a crane main body 21 is arranged on an upper portion of a carriage 20 having a gate shape and traveling wheels 19 capable of traveling on the first rail 17 on the bottom surface. Wheels 22 provided at the bottom of the carriage 20 make it possible to move on rails 23 parallel to the first rails 17 above the carriage 20. A boom 24 is rotatably attached to the crane body 21, and an arm 25 is attached to the tip of the boom 24.
Is rotatably attached and is operated by a boom jack 26 and an arm jack 27. A suction device 29 having a suction pad connected to a vacuum pump (not shown) is attached to the tip of the arm 25 via a rotation shaft 28 in a curved shape along the outer peripheral surface of the segment 1 and is rotated. The device 30 can rotate the rotary shaft 28 to rotate the adsorption device 29. The segment crane 2 includes a segment truck 31 traveling on the second rail 18 and a segment truck 1 loaded with the segment 1 loaded in such a manner that the peripheral axis is orthogonal to the transport direction and the outer peripheral surface faces upward. After the outer peripheral surface of the segment is adsorbed and held by the adsorbing pad of the adsorbing device 29, the segment 1 is rotated by 90 ° about the rotating shaft 28 and transferred onto the lift 32 of the segment lifter 3. This segment lifter 3 forms a roller conveyor device 10 from the first to the first.
Of the third gate-shaped frames 5A to 5C, a lift 32, which is disposed at the rear of the rear third gate-shaped frame 5C and has rollers 33 to 36 on the upper surface along the tunnel circumferential direction, has four corners on the lower surface thereof. Cylinder for elevating and erected on the gate-shaped frame 5C of 3
It is mounted so that it can be moved up and down while being supported by the operation of 37. That is, as shown in FIGS. 2 and 4, on the upper surface of the lift table 32, a driving device is installed in the central portion and is biased upward by a spring 33a so that the peripheral surface is segment 1.
With a drum-shaped drive roller 33 that is pressed against the inner peripheral surface of the roller, and a pair of left and right idler steps that are arranged between the drive rollers 33 and are biased upward by a spring 34c and that have a flange 34a at the outer end. The drive roller 33 includes a roller 34, a drum-shaped idle rotation support roller 35 arranged on both sides of the drive roller 33 and the stepped roller 34, and a guide roller 36 arranged between outer sides of the support roller 35. Stepped roller 34, support roller
Reference numerals 35 respectively guide and support the inner peripheral surface of the segment 1, and guide rollers 36 guide and support the end surface of the segment 1 along the axial direction. The elevator table 32 receives the segment 1 from the segment crane 2 at the lowered position shown in FIG. 1 is transferred.

First to third portal frames 5A of the roller conveyor device 10
~ 5C, the traveling wheel 40 provided on the bottom is on the first rail
The portal frames 5A to 5C are movable by traveling 17 and are connected to each other via a connection 41. An upper portion of each of the gate-shaped frames 5A to 5C is formed in an arc shape along the tunnel circumferential direction and, as shown in FIGS. 2 and 5, is arranged in the center and has a built-in drive device and a spring. 6a, a drum-shaped drive roller 6 whose peripheral surface is pressed against the inner peripheral surface of the segment 1, and a drum-shaped drive roller 6 disposed alternately with the drive roller 6 at the central portion, and biased upward by a spring 7c. In addition, a pair of left and right idle step rollers 7 having a flange portion 7a at the outer end, and drum-like idle support rollers 8 arranged on both sides of the drive roller 6 and the step roller 7.
And a guide roller 9 disposed between the outer sides of the support roller 8, the drive roller 6, the stepped roller 7,
The support rollers 8 guide and support the inner peripheral surface of the segment 1, and the guide rollers 9 guide and support the end surface of the segment 1 along the axial direction. In the stepped roller 7, the width between the collar portions 7a is set to be slightly larger than the width of the key segment 1a, and the spring force of the spring 7c is set to a predetermined value.
As shown in (a) and (b), when the large segment 1 is conveyed, the large weight of the segment 1 pushes it down to support the inner peripheral surface of the segment 1 with the peripheral surface of the collar portion 7a, and the small key. When transporting the segment 1a, as shown in FIG. 6 (c), the small-diameter roller portion 7b is lifted up to the transport surface of the drive roller 6 by the spring 7c to support the inner peripheral surface of the key segment 1a, The part 7a is configured to prevent the key segment 1a from shifting. This roller conveyor device
A stopper device 42 for stopping the segment to be conveyed is provided at the front part of the first gate-shaped frame 5A of 10, and the stopper device 42 has a pair of left and right stoppers in the central part as shown in FIG. The stopper claw 44 attached to the operation of the elevator cylinder is projected above the transport surface above the drive roller 6 to stop the movement of the segment 1.

The delivery device 11 comprises a segment feeder 45 and a fork 46 provided in the front part of the first portal frame 5A, and this segment feeder 45 is similar to the lift table 32 of the segment lifter 3 in that the drive roller 47 and the stepped roller. Lifting frame 51 having 48, support roller 49, and guide roller 50
Can be lifted and lowered by being supported by the operation of the lifting cylinder 52 standing on the first portal frame 5A at the four corners of its lower surface. Further, the fork 46 is a roller conveyor device 10 and drive rollers 6 and 47 of the elevating frame 51 and stepped rollers 7 and 48.
A pair of left and right are arranged in the front-rear direction along the outer side of the guide roller 53 provided on the outer side of the guide rail 54, which is attached to the upper portion of the first portal frame 5A in the front-rear direction, and The rear end of the first portal frame 5A is connected to the operation of a moving-out cylinder 55 attached to the first portal frame 5A so that the moving-out cylinder 55 can move forward and backward. Reference numeral 56 is a locking claw that projects from the tip of the fork 46 and locks the segment 1. In the delivery device 11, the segment 1 conveyed by the roller conveyor device 10 is conveyed onto the elevating frame 52 located at the upper position, abuts against the locking claw 56 of the fork 46, and is stopped, and the elevating frame 51 is lowered. Then fork segment 1
After mounting on 46, activate the exit cylinder 55 and fork
46 is projected forward and the segment 1 is the erector device 14
Hand over to.

As shown in FIGS. 3 and 10, the erector device 14 is provided with a pair of left and right rear decks 58 on the support 57 provided on the shield machine 12 so as to project rearward. A slide frame 62 that travels through a wheel 60 on a slide rail 59 arranged in the front-rear direction is provided on the lower surface, and a ring-shaped slewing bearing 61 is provided on the slide frame 62.
Fixed to the slewing bearing 61.
63 and an arc-shaped pushing frame 65 provided with a suction device 64 having a suction pad on the outer surface, which is connected between the operation tip of the pushing jack 63, and is configured to be rotatable.
The pushing jack 63 and the pushing frame 65 are swung by a rack 66 provided on the inner peripheral surface of the swivel bearing 61, and a pinion 68 of an output shaft of a swiveling motor 67 connected and fixed to the pushing jack 63 meshes with each other. Further, a slide cylinder 69 is arranged on the slide frame 62, and its operation is connected to the support 57 to reciprocate the slide frame 62 in the front-rear direction. On the outer peripheral surface of the pushing frame 65, the fork 46 of the delivery device 11 is formed in the front and rear direction of the fitting groove 70 that can be inserted and removed from above and from the rear, and the fork 46 protruding forward is raised by the pushing jack 63. Fitting groove of pushing frame 65
After fitting the segment 1 on the fork 46 by fitting it to the 70 and holding the segment 1 by the suction device 64, the fork 46 is retracted and pulled out from the fitting groove 70,
The segment 1 on the fork 46 is received on the pushing frame 65. And the pushing frame 65 holding the segment 1
Is moved forward along the rear deck 58 via the slide frame 62 and is turned at a predetermined angle, and then the pushing jack 63 is operated to make the segment 1 correspond to the required segment installation position.

Rear deck 58 of erector device 14 and roller conveyor device
The first gate-shaped frame 5A of 10 is connected by a connecting member 71A, and the third gate-shaped frame 5C of the roller conveyor device 10 and the carriage 20 on which the segment crane 2 is arranged are connected by a connecting member 71B. The first to third portal frames 5A to 5C and the carriage 20 follow the movement of the shield machine 12 associated with the excavation and move on the first rail 17. Further, in the first to third gate-shaped frames 5A to 5B, an earth discharging conveyor device 73 for discharging the earth discharged from the earth discharging device 72 of the shield machine 12 is arranged, and a second rail. A dump truck 74 running on 18 is arranged.

Next, the operation of this device will be described.

The segment 1 conveyed by the segment truck 31 traveling on the second rail 18 is held by the suction device 29 of the segment crane 2 and turned 90 °, and is placed on the lift table 32 at the lowered position of the segment lifter 3. . Then, when the lifting cylinder 37 is operated to raise the lifting table 32 to the raised position, the driving roller 33 of the lifting table 32 is driven and transferred to the roller conveyor device 10. In the roller conveyor device 10, the large segment 1 is conveyed forward by being driven while the driving roller 6 is pressed against the inner peripheral surface thereof. At this time, the inner peripheral surface of the segment 1 is supported by the drive roller 6, the stepped roller 7, and the support roller 8, and the end surface in the axial direction of the segment is locked by the guide roller 9. The small key segment 1a has an inner peripheral surface supported by the driving roller 6 and the small diameter portion 7b of the stepped roller 7, and the stepped roller 7
It is conveyed by being fixed by the collar portion 7a.

The segment 1 transferred from the roller conveyor device 10 onto the elevating frame 51 of the segment feeder 45 is decelerated by the brake built in the drive roller 47 of the elevating frame 51 and abuts on the locking claw 56 at the tip of the fork 46. Stop. At this time, the driving roller 47 of the roller conveyor device 10 is stopped to make the segment 1 on the roller conveyor device 10 stand by, and at the same time, the stopper lifting cylinder 43 is operated to cause the stopper claw 44 to project onto the conveyor conveying surface. , Surely stop the movement of segment 1. Next, the lifting cylinder 52 of the segment feeder 45 is operated to lower the lifting frame, the segment 1 is passed over the fork 46 in the retracted position, and then the retracting cylinder 55 is operated to project the fork 46 forward. Let After that, the segment 1 is placed on the pushing frame 65 of the erector device 14 which is raised from the lower side to the receiving position.
Holding the fork 46 and retracting the fork 46,
65 is moved forward along the rear deck 58 by the sliding cylinder 69, and the pushing frame 65 is swung around the swivel bearing 61 to extend the pushing jack 63 and make the segment 1 correspond to the required segment mounting position.

According to the above embodiment, the roller conveyor device 10, the lift 32 of the segment lifter 3, and the drive rollers 6, 33, 47 of the segment feeder 45 are pressed against the inner peripheral surface of the segment 1 by the springs 6a, 33a, 47a. , The segment 1 can be reliably transported, and the drive rollers 6, 33, 47 of the roller conveyor device 10 and the lift 32 of the segment lifter 3 and the lift frame 51 of the segment feeder 45 can be transported.
The large segment 1 is supported by the peripheral surfaces of the flanges 7a, 34a, 48a by the stepped rollers 7, 34, 48 arranged between the guide rollers 9, 34, 48, and is prevented from being displaced by the guide rollers 9, 36, 50, and is small in size. The key segment 1a is supported by the small-diameter roller portions 7b, 34b, 48b and is prevented from slipping by the collar portions 7a, 34a, 48a, so that the large-sized segment 1 and the small-sized key segment 1a
Can be reliably transported, and other irregularly shaped segments can also be transported.

As described above, according to the present invention, the segment transferred on the roller conveyor device is transported forward by the transfer device disposed at the rear part, and the segment transported by the roller conveyor device is delivered. Since the device is held by the pushing frame of the segment assembling device, a heavy segment can be safely and efficiently supplied to the assembling device without human touch.

Further, a roller conveyor device for transporting the segments is formed by forming an upper portion of the gate-shaped frame in an arc shape along the tunnel circumferential direction and providing a support roller on the upper surface of the portal frame. Since it is transported in the axial direction, the space of the portal frame can be used to the maximum extent, and an earth unloading device that extends to the rear of the segment assembly device, an earth unloading conveyor, an unloading truck, etc. can be easily installed. it can.

Further, since the stepped roller is arranged between the driving rollers at the center of the roller conveyor device, the small segment is supported between the flanges of the stepped roller, and the small segment is conveyed simultaneously with the normal segment. It is possible to supply the segment very efficiently.

[Brief description of drawings]

The drawings show one embodiment of the present invention, FIG. 1 is a schematic side view of an automatic segment feeder, FIG. 2 is a plan view thereof, and FIG. 3 is a side view showing a shield machine and an erector device.
4 and 5 are views taken along the line I-I shown in FIG.
II-II arrow view, FIG. 6 (a) (b) (c) is a cross-sectional view of the roller conveyor device showing the segment conveying state, FIG. 7 and FIG. 8 are III-III arrow shown in FIG. 9 is a view for explaining the operation of FIG. 8, and FIG. 10 is a sectional view taken along line VV shown in FIG. 1 ... Segment, 2 ... Segment crane, 3 ... Segment lifter, 4 ... Transfer device, 5A-5C ... 1st-3rd
Gate-shaped frame, 6 ... drive roller, 7 ... stepped roller, 8
... Support rollers, 9 ... Guide rollers, 10 ... Roller conveyor devices, 11 ... Delivery devices, 14 ... Erector devices (segment assembly devices), 15 ... Tunnels, 45 ... Segment feeders, 46 ... Forks.

Front page continued (72) Inventor Taiji Hanaoka 1-6-14 Edobori, Nishi-ku, Osaka City, Osaka Prefecture Hitachi Shipbuilding Co., Ltd. (72) Tomohiro Abe 1-6-14 Edobori, Nishi-ku, Osaka City, Osaka Prefecture Hitachi Zosen Corporation In-house (56) References JP-A-61-237800 (JP, A)

Claims (1)

[Claims] 1. A roller conveyor device having a supporting roller for supporting an inner peripheral surface of a segment at an appropriate interval in the tunnel length direction at an arcuate upper portion along a tunnel peripheral portion of a portal frame long in the tunnel length direction. , A transfer device arranged at the rear of the roller conveyor device to supply the segment to the roller conveyor device, and a transfer device arranged at the front of the roller conveyor device to supply the segment on the roller conveyor device to the assembly device. A plurality of support rollers of the roller conveyor device are arranged in the circumferential direction of the tunnel, and a central support roller is a drive roller that is urged toward the inner peripheral surface of the segment by an urging means to convey the segment. A stepped roller that has a collar formed on the outer end and can support small segments between the collars at regular intervals in the length direction of the tunnel. The automatic segment feeder is characterized by being arranged in the