JP2948194B1 - Segment feeder - Google Patents

Abstract

Abstract: PROBLEM TO BE SOLVED: To surely transport a segment to a supply position to increase the segment supply efficiency, to simplify the structure and reduce the size, to reduce the manufacturing cost, and to be applicable to a small-diameter shield excavator. Being able to handle tunnels excavated in a curve. A segment feeder (7) is connected to a first transport vehicle (20) having a distal end portion that is towed to a rear work deck (6) and a wheel (26) at a rear end portion, and is connected to the first transport vehicle. A second transport vehicle 21 having a loading portion 23, a segment transport mechanism for transporting a plurality of segments, a positioning mechanism 25 for positioning the segments, and the like are provided. The segment transport mechanism 24 steps the segments on the first and second transport vehicles. Step feed mechanism 3 for feeding
0, 31, a lifter 32 for receiving and lowering the segment by the first transporting cart, a delivery cart 33 for delivering the segment 4 to the erector 5, and the like.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a segment supply device for supplying a segment to an erector of a shield machine, and more particularly to a segment supply device having a simplified structure and improved segment supply efficiency.

[0002]

2. Description of the Related Art Conventionally, in a shield construction method in which a shield excavator is advanced to excavate a tunnel, a segment is attached to a wall surface of the tunnel by an erector, and the inner surface of the tunnel is lining, a segment supply efficiency for supplying a segment to an erector. In order to increase the productivity of lining the inside of the tunnel and increase the productivity, a segment supply device that stocks a plurality of segments transported from traveling shafts and hoists from the shaft and supplies the plurality of segments to the erecta sequentially Various practical applications.

[0003] For example, a segment supply device disclosed in Japanese Patent Application Laid-Open No. H5-179898 discloses a transport vehicle capable of placing and supporting a plurality of segments in series in the front-rear direction, and a plurality of segments on the transport vehicle toward a front erector side. A transport mechanism that integrally transports, a positioning mechanism that positions the leading segment supplied to the erector in the front-rear and left-right directions, a front-rear drive mechanism that drives the transport trolley back and forth, and a lifting drive that drives the transport trolley up and down It has a mechanism and the like.

[0004] In the transport trolley, the front end portion is configured as a transfer portion for transferring the segments to the erector, and the rear end portion is configured as a carry-in portion for carrying the segments conveyed from the shaft, and is provided on the inner surface of the tunnel by a plurality of wheels. It can run on the bottom of the lining segment. The portion behind the transfer part of the transport vehicle is connected to the support frame by a plurality of hydraulic cylinders of the lifting drive mechanism so as to be able to move up and down, and the guide members at the upper ends of these hydraulic cylinders are supported by the support frame in the left and right direction, It is driven back and forth by a hydraulic cylinder of a back and forth drive mechanism.

The transport mechanism supports a plurality of segments so as to be transportable back and forth on a plurality of roller members provided on a transport trolley, and is configured to integrally advance the plurality of segments by a segment drive mechanism. . The positioning mechanism is provided in the transfer section of the transport vehicle, and includes a left-right centering roller, a left-right centering device, a front-rear positioning stopper, a front-rear positioning pulling jack, and the like.

When a plurality of segments are integrally transported to the erector side by the transport mechanism, the leading segment is positioned by the positioning mechanism at the transfer section of the transport trolley, and
When the height position of the carriage is adjusted and moved forward by the lifting drive mechanism and the front-rear drive mechanism, the positioned first segment reaches the supply position, and at this position, the first segment is supplied to the erector. Backward so as not to interfere with the segment assembly work. This operation is repeatedly performed, and a plurality of segments on the carrier are sequentially supplied to the erector from the front side.

[0007]

[Problems to be Solved by the Invention]
In the segment supply device disclosed in JP-A-98-98, when the leading segment is conveyed to the supply position, the rear portion of the transfer unit of the transfer vehicle is raised and supported by the hydraulic cylinder, so that the transfer of the transfer vehicle on which the segment is mounted is performed. The first segment is reliably transported to the supply position despite being positioned by the positioning mechanism due to the fact that the portion is easily deflected downward, and furthermore, the entire transport trolley must be largely moved back and forth and up and down. Can't do it,
There is a problem that the segment supply efficiency is reduced.

Further, in order to move the entire carriage up and down with respect to the erector together with a plurality of segments and to move the carriage forward and backward,
Since a rigid support frame must be provided, and a vertical drive mechanism and a front-rear drive mechanism must be provided, the structure becomes very large, the production cost becomes extremely expensive, and it becomes a small-diameter shield excavator. There is a problem that it becomes difficult to apply.

[0009] Further, in the case of a transport vehicle on which a plurality of (for example, one ring) segments are placed and supported, the front-rear length is long, but in a curved tunnel, the rear end portion of the transport vehicle is in the width direction of the tunnel. Inability to stably place and support multiple segments on the transport trolley because it cannot run in the center and tilts, and the carry-in section of the transport trolley also shifts from the center in the width direction of the tunnel. There are problems that it becomes very difficult to carry in and that the transport vehicle does not curve smoothly with the normal wheels mounted on the transport vehicle.

An object of the present invention is to provide a segment supply device for supplying a segment to an erector of a shield machine, to surely convey the segment to a supply position and to improve the segment supply efficiency, to simplify and reduce the size of the structure, Reduction of manufacturing cost, application to a small-diameter shield excavator, adaptation to a tunnel excavated in a curved shape, and the like.

[0011]

The segment supply device according to claim 1, wherein the segment feeder supplies the segment to an erector for assembling the segment on a wall of a tunnel excavated while advancing a shield machine. , A transport trolley having a loading section capable of placing and supporting a plurality of segments and loading the segments at the rear end thereof, and supplying the plurality of segments loaded from the loading section to the erector. a segment conveying means for conveying to the position, the front end Karase of the conveyance carriage
Lifter that receives and lowers the
The receiving position and the segment to receive the segment from
To move back and forth over the delivery position
Segment transporting means having a delivery trolley, positioning means for positioning the segments transported to the supply position in the front-rear direction and left-right direction, and an erector disposed on the rear side of the erector in accordance with excavation of a tunnel. A rear working deck that moves forward integrally, a coupling mechanism that connects at least the front end of the transport vehicle so as to be able to be pulled, and a bottom portion of a segment that is attached to at least a rear end portion of the transport vehicle and that is covered on the inner surface of the tunnel. And a plurality of rolling wheels.

[0012] At least a front end of the carriage is connected to a rear work deck, which is disposed on the rear side of the erector and is integrally advanced with the erector in accordance with the excavation of the tunnel, by a connecting mechanism so as to be retractable. At the rear end,
A plurality of wheels that roll on the bottom of the lining segment are mounted on the inner surface of the tunnel. Therefore, the height level of at least the front end portion of the transport vehicle with respect to the erector always coincides, the plurality of wheels support a part of the load of the transport vehicle and the plurality of segments mounted thereon and supported, and It is pulled by the deck and moves forward integrally with the erecta.

The plurality of segments carried into the carry-in section of the carrier are transported from the carry-in section to the supply position by the segment carrying means, and positioned in the front-rear direction and the left-right direction by the positioning means and supplied to the erector.

[0014] Plural (for example, for one ring) on the carrier
Is forwarded by a predetermined stroke step forward, and the step feed is repeated and conveyed to the erector side, and is supplied to the erector sequentially from the first segment .

[0015] the beginning of the segment to be supplied to the next erector is, when lowered being received from the front end portion of the conveyance carriage in the lifter, the segment is received in the conveyance carriage located at position receiving the lifter, the delivery truck receiving position When the segment is driven forward to the delivery position, the segment reaches the supply position and is delivered to the erector. It is possible to dispose a delivery truck that is driven to move back and forth between a receiving position and a delivery position below a transporting truck having a plurality of wheels mounted on a rear end portion .

According to a second aspect of the present invention, there is provided a segment supply device.
In the invention of one aspect, the transport vehicle is a first transport vehicle connected to a rear work deck by the connection mechanism, and is disposed in series at a rear side of the first transport vehicle having the carry-in portion. A second carriage connected to the carriage, wherein the plurality of wheels are mounted from a rear end of the first carriage to a rear end of the second carriage. is there.

Even in a curved tunnel, the first and second transport vehicles are positioned at the center in the width direction of the tunnel, and a plurality of (eg, one ring) segments are stably provided on the first and second transport vehicles. Since it can be placed and supported, and the carry-in portion of the second carrier is also located at the center in the width direction of the tunnel, it is easy to carry the segments into the carry-in portion by a hoist or the like. Other operations are the same as those of the first aspect .

According to a third aspect of the present invention, in the first or second aspect of the present invention, the positioning means is provided on the lifter and the delivery cart.
Therefore, when the first segment supplied to the erector is received by the lifter, lowered, and transferred to the delivery trolley, it can be positioned in the front-rear direction and the left-right direction by the positioning means. Other operations are the same as those of the first or second aspect .

According to a fourth aspect of the present invention, there is provided a segment supply device.
3. The invention according to claim 3 , wherein the positioning means includes centering means provided on the lifter for positioning the segments in the left-right direction, and front-rear positioning means provided on the delivery trolley for positioning the segments in the front-rear direction. is there. Therefore, when the leading segment supplied to the erector is transferred from the lifter to the delivery cart, the centering means and the front-rear positioning means can surely position the head segment in the left-right direction and the front-rear direction. Other effects are the same as those of the third aspect .

According to a fifth aspect of the present invention, in the segment supply device according to the first or second aspect , the segment transporting means includes:
A plurality of roller members provided on the transport trolley for supporting the segments so as to be transportable forward; and a plurality of roller members provided on the transport trolley so as to be movable in the front-rear direction and respectively engaged with rear ends of the plurality of segments so as to be disengageable. A dog and an actuator capable of integrally reciprocating the plurality of dogs in a front-rear direction by a predetermined stroke.

When the plurality of dogs are engaged with the rear ends of the segments, respectively, and the plurality of dogs are driven forward by a predetermined stroke by the actuator, the plurality of segments supported on the plurality of roller members become the plurality of segments. When the actuator is driven forward by a predetermined stroke together with the dog and the actuator is driven in the opposite direction, the dogs are disengaged from the rear ends of the segments, respectively, and are driven rearward by a predetermined stroke, and this operation is repeatedly executed. Then, the plurality of segments on the carrier are stepped forward by a predetermined stroke. Other operations are the same as those of the first or second aspect .

According to a sixth aspect of the present invention, there is provided a segment supply device.
In the invention of claim 5 , the plurality of dogs of the first carrier are arranged in two rows on both left and right sides, and the plurality of dogs of the second carrier do not interfere with the dogs of the first carrier in two rows on both sides. It is characterized by being arranged as follows.

In the case where the segments are mounted and supported on both the first and second carriages, a plurality of dogs in two rows of the first carriage and a plurality of dogs in two rows of the second carriage are: The reciprocating drive is performed synchronously, and the plurality of segments on the first and second transport vehicles are integrally driven forward. When the segment is mounted and supported only on one of the first and second transport vehicles, only the dogs in two rows of the one transport vehicle interfere with the dogs on the other transport vehicle. Reciprocating drive, and a plurality of segments are driven forward. Other operations are the same as those of the fifth aspect .

According to a seventh aspect of the present invention, there is provided a segment supply device.
In the invention according to any one of 1 to 6, the delivery cart is supported by wheels that roll on the bottom of the segment lining the inside of the tunnel, and is mounted on the rear work deck by a plurality of guide rollers in the front-rear direction. It is characterized by being guided. Therefore, the delivery cart is guided in the front-rear direction by the plurality of guide rollers on the rear work deck, and moves smoothly and reliably between the receiving position and the delivery position. Other exhibits the same effect as any one of claims 1-6.

[0025] The segment supply device according to claim 8 is characterized in that:
In the second invention, the plurality of wheels are caster wheels. Therefore, the first and second transport vehicles travel smoothly even in a curved tunnel and are pulled by the erector. Other effects are the same as those of the second aspect .

[0026]

Embodiments of the present invention will be described below with reference to the drawings. The present embodiment is an example in which the present invention is applied to a segment supply device that supplies a segment to an erector that attaches a segment to a wall of a tunnel excavated while advancing a shield machine.
It is assumed that the forward direction of the shield machine is forward.

As shown in FIG. 1, the shield machine 1
A trunk member 2 including a front trunk and a rear trunk, a cutter disk (not shown) mounted on a front end of the trunk member 2, a plurality of shield jacks 3 for moving the shield excavator 1 forward, and an excavated tunnel T The rear work deck 6 which advances integrally with the erector 5 and the segment supply device 7 which supplies the segment 4 to the erector 5 are provided at the rear side of the erector 5. Have been.

A chamber (not shown) into which excavated soil such as earth and sand excavated by a carter disk flows is formed at a front end portion of the inside of the body member 2, and the excavated soil is muddy in the rear of the chamber. A water supply pipe 10 for supplying water to the inside of the chamber and a drain pipe 11 for discharging muddy water in the chamber are provided. A mortar injection device 12 for injecting mortar is provided between the segment 4 assembled by the erector 5 and the tunnel T.

A plurality of shield jacks 3 are arranged at equal intervals along the inner surface of the body member 2, and a plurality of segments 4 are assembled by an erector 5 to cover one ring of the tunnel peripheral wall 13. The shield excavator 1 is driven forward by a reaction force that pushes the front end face of the segment 4 rearward at the output portion 3a of the shield jack 3. In addition, behind the erecta 5,
Roundness holding device 14 for rounding lining segment 4
Is also provided.

The elector 5 has a holding device 15 for holding the segment 4, and the holding device 15 for holding the segment 4.
Is moved in the radial direction of the tunnel and in the front-rear direction, whereby the segment 4 is assembled on the wall surface of the tunnel T. The gripping device 15 includes a plurality of hydraulic jacks 16 and a plurality of engagement protrusions 1 fixed to the distal ends of the plurality of hydraulic jacks 16.
7, the engagement protrusion 17 is inserted into an engagement hole (not shown) of the segment 4 by the hydraulic jack 16 and twisted by 90 degrees so that the segment 4 can be gripped.

The segment supply device 7 will be described.
The segment supply device 7 is disposed behind the erector 5 and has a front end portion connected to the rear work deck 6 by a connecting mechanism 22 so as to be pulled by the connecting mechanism 22. And a plurality of segments 4 loaded from the loading section 23, the loading section 23 having a loading section 23 into which the segments 4 are loaded at the rear end thereof. And a positioning mechanism 25 for positioning the segment 4 conveyed to the supply position in the front-rear direction and the left-right direction.

A plurality of wheels 26, which are caster wheels that roll on the bottom of the segment 4 covered on the inner surface of the tunnel, are mounted on the rear end portion of the first carrier 20.
6 supports a part of the load of the first carrier 20 and the segment 4 mounted and supported thereon. 2nd conveyance trolley 21
A plurality of wheels 27 and 28, which are caster wheels that roll on the bottom of the segment 4 covered with the inner surface of the tunnel, are mounted on both front and rear ends thereof. The load of the placed and supported segment 4 is supported.

Each of the first and second carriages 20 and 21 has 4
On each piece and on the delivery truck 33, one ring of segments 4 of the tunnel peripheral wall 13 of 9 pieces in total can be placed and supported. As shown in FIG. 9, a guide portion 23 a that guides the segment 4 conveyed by the hoist 62 when the segment 4 conveyed by the hoist 62 is carried into the carry-in portion 23 is provided in the carry-in portion 23 of the second carrier cart 21. . Each of the wheels is formed as a pair of left and right double wheels so as not to fit into the concave portion of the inner surface of the assembled segment 4.

The segment transport mechanism 24 is a step feed mechanism 3 for feeding a plurality of segments 4 on the first and second transport carts 20 and 21 forward by a predetermined stroke, respectively.
0, 31 and the step feed mechanism 30 of the first carrier 20
A lifter 32 for receiving and descending the first segment 4 step-forwarded from the front end of the first carrier 20;
Receiving the segment 4 from the lifter 32, the gripping device 1 in the front
The transfer carriage 33 is configured to be moved to a supply position that can be gripped by the transfer tray 5 and transferred to the erector 5.

The first transport vehicle 20 and the step feed mechanism 30 provided on the first transport vehicle 20 are shown in FIGS.
This will be described with reference to FIG. Most of the first transport vehicle 20 is disposed between the pair of left and right legs 9 of the rear work deck 6 and below the beam member 9a attached to the legs 9, The worktable 6a is connected substantially integrally to the left and right sides of the rear end portion 20.

The connecting mechanism 22 connects the support portion 35 at the center in the left-right direction of the front end portion of the first carrier 20 to a connecting portion 9 b having both ends connected to the lower ends of a pair of legs 9. The support plates 36 at the left and right ends of the front end portion of the first transport carriage 20 are slid on the pair of receiving portions 9c fixed to the lower end portions of the pair of leg portions 9 while being rotatably connected to each other. The first work vehicle 20 and a part of the load of the segment 4 mounted and supported thereon are supported by the rear work deck 6 via the connection plate 36 and the connection member 9c. You.

The step feed mechanism 30 includes a plurality of roller members 40 in two rows for supporting the segment 4 so that the segment 4 can be transported forward.
A plurality of dogs 41 in two rows, which are provided between the two rows of roller members 40 so as to be movable in the front-rear direction, and respectively engage with rear ends of the plurality of segments 4 in a detachable manner;
A plurality of dogs 41 are provided with a hydraulic jack 42 or the like capable of integrally reciprocating a predetermined stroke in the front-rear direction. The plurality of roller members 40 It is provided in a slightly inclined state so as to abut against. A guide portion 9 for guiding the left and right ends of the segment 4 is provided on the inner surface of the pair of leg portions 9.
d is provided.

As shown in FIGS. 5 and 6, the four dogs 41 in each row are attached to a movable bar 43 having a concave cross section which is long in the front and rear direction and is supported by the first carriage 20 so as to be movable back and forth. They are worn at equal intervals. Movable bar 4
A guide member 44 is fixed to the lower end of the third carrier 3 over its front and rear length, and the guide member 44 slidably engages with an engagement member 45 fixedly provided on the first carrier 20. Guide supported movably back and forth.

As shown in FIGS. 7 and 8, each of the dogs 41 is formed in a portal type when viewed from the front, and is pivotally supported by a movable bar 43 via a pivot shaft 46 oriented in the left-right direction. A plate member 47 is fixed to the bottom surface of the movable bar 43.
A notch hole 47a located below the dog 41 is formed.

An engagement portion 41a for engaging the rear end of the segment 4 and a contact portion 41a for contacting the front end of the rear segment 4 are formed at the front end of the dog 41. The part is provided with a locked part 41c which is locked by a locking part 47b at the front end of the notch hole 47a. Further, each dog 41 is urged to rotate by a tension coil spring 48. Normally, the locked portion 41c is locked by the locking portion 47b by the rotation biasing force of the tension coil spring 48, and each dog 41 is It is standing upright.

A pair of movable bars 43 each having a plurality of dogs 41 provided in a row are connected by a connecting member 49, and one end of a hydraulic jack 42 is connected to the center of the connecting member 49 in the left-right direction. By driving the hydraulic jack 42, a plurality of dogs 41 provided in two rows are provided.
Are integrally reciprocated in the front-rear direction.

The second transport vehicle 21 and the step feed mechanism 31 provided on the second transport vehicle 21 will be described with reference to FIGS.
This will be described with reference to FIG. The second transport trolley 21 is
The work platform 19 is arranged in series behind the transport vehicle 20 and is connected to the first transport vehicle 20 so as to be rotatable around a vertical axis. Are linked.

The step feed mechanism 31 includes a plurality of roller members 50 in two rows for supporting the segment 4 so as to be able to be transported forward.
A plurality of dogs 51 in two rows, which are provided movably in the front-rear direction between the two rows of roller members 50 and are respectively removably engaged with rear ends of the plurality of segments 4;
A plurality of dogs 51 are provided with a hydraulic jack 52 or the like capable of integrally reciprocating a predetermined stroke in the front-rear direction. The plurality of roller members 50 are provided on the upper surfaces of the left and right ends of the second transport vehicle 21 at the curved surfaces of the segments 4. It is provided in a slightly inclined state so as to abut against. A guide portion 19b for guiding both ends of the segment 4 is provided on the inner surface side of the pair of left and right legs 19a of the work table 19.

The four dogs 51 in each row, like the four dogs 41 in each row of the first carrier 20, are supported by the second carrier 21 so as to be movable back and forth as shown in FIGS. It is mounted on the movable bar 53 having a concave cross section long before and after, at intervals equal to the predetermined stroke. The dogs 51 have the same structure as the dogs 41 of the first transport trolley 20, as shown in FIGS.

A pair of movable bars 53 are connected by a connecting member 59, and one end of a hydraulic jack 52 is connected to a central portion in the left-right direction of the connecting member 59, and is provided in two rows by driving the hydraulic jack 52. The plurality of dogs 51
It is integrally reciprocated in the front-rear direction. 2nd conveyance trolley 21
Are disposed outside the pair of movable bars 43 of the first transport trolley 20, and a plurality of dogs 41 of the first transport trolley 20 and a plurality of dogs 5 of the second transport trolley 21 are provided.
1 are arranged such that they do not interfere with each other even when driven independently.

Here, the transport means for transporting the segment 4 from the shaft in the back of the tunnel to the loading section 23 of the second transport vehicle 21 will be briefly described.
A delivery station 60 is provided at the rear of the vehicle, and the segment 4 is transported from the shaft to the delivery station 60 by a traveling vehicle 64. A beam 61 extends from the delivery station 60 to the rear work deck 6, and the segment 4 on the traveling carriage 64 of the delivery station 60 is transported to the front side by the hoist 62 that is driven and moved along the beam 61, and is loaded into the loading section 23. You.

The lifter 32 and the delivery truck 33 will be described. As shown in FIGS. 2, 12, and 13, the lifter 32 includes a lift frame 70 guided by the legs 9 of the rear work deck 6 so as to be able to move up and down, and a pair of right and left hydraulic cylinders 71 that drives the lift frame 70 to move up and down. , A plurality of roller members 72 for supporting the segments 4 so as to be able to be transported forward. The plurality of roller members 72 are disposed in two rows on the left and right with substantially the same width as the plurality of roller members 40 in the two rows on the left and right of the first transporting trolley 20. 30 is open for insertion.

When the elevating frame 70 is located at the ascending position, the plurality of roller members 72 are at the same height level as the plurality of roller members 40 of the first carrier 20. In this state,
The leading segment 4 on the first transport trolley 20 is step-advanced by the step feed mechanism 30 and is transferred from the front end of the first transport trolley 20 to the elevating frame 70. In addition, lifter 3
A stopper 74 is provided on the rear work deck 6 on the front side of 2 for the segment 4 conveyed to the lifting frame 70.

On the other hand, the delivery cart 33 is shown in FIGS.
As shown in FIG. 14, a plurality of guide rollers 9e provided on the legs 9 of the rear work deck 6 are supported so as to be able to run on the rolling wheels 75 at the bottom of the segments 4 covered on the inner surface of the tunnel. , And is reciprocated back and forth by the driving force of the hydraulic cylinder 76.

A plurality of roller members 96 are provided at the front end of the delivery truck 33 to support the segments 4 so as to be able to move back and forth. When the lift frame 70 is located at the lowered position, a plurality of rows of lift frames 70 are arranged. The delivery cart 33 is inserted between the roller members 72, and the plurality of roller members 72
Has a slightly lower height level than the plurality of roller members 96 of the delivery cart 33, and the segment 4 is received from the lifter 32 to the delivery cart 33.

The rear end of the hydraulic cylinder 76 is connected to the rear work deck 6, and the piston rod 7 of the hydraulic cylinder 76 is
Two sprockets 77 are mounted on the tip of 8a, and a pair of chains 78, 79 is engaged with the two sprockets 77. Both ends of the chain 78 are connected to the connecting portions 33a of the first carrier 20 and the delivery vehicle 33 on the rear side of the sprocket 77, respectively.
On the front side of the sprocket 77, the sprocket 77 is connected to the connecting portion 33b of the first transporting vehicle 20 and the delivery vehicle 33, respectively.

When the hydraulic cylinder 76 is driven and the piston rod 78a is extended, the delivery carriage 33 is moved by the piston rod 7 via the sprocket 77 and the chain member 78.
It is driven forward by twice the stroke of 8a. When the hydraulic cylinder 76 is driven and the piston rod 78a retreats,
Via the sprocket 77 and the chain member 79, the delivery cart 33 is driven backward by a stroke twice as long as the piston rod 78a.

FIGS. 12 to 1 show the positioning mechanism 25.
This will be described with reference to FIG. The positioning mechanism 25 includes the lifter 3
2, a centering mechanism 80 for positioning the segment 4 in the left-right direction, and a front-rear positioning mechanism 9 for the delivery truck 33 for positioning the segment 4 in the front-rear direction.
0.

The centering mechanism 80 includes a pair of left and right centering rollers 81 capable of pressing and rolling the left and right end surfaces of the segment 4 and a pair of right and left centering rollers 81.
A pair of hydraulic jacks 83 for driving the object in the left-right direction via a link mechanism 82, a total of four roller members 84 provided two each for the left and right for movably supporting the segment 4 left and right, And a pair of left and right hydraulic jacks 86 for driving the roller member 84 up and down by a small stroke via a link mechanism 85.

On the other hand, the front / rear positioning mechanism 90 comprises a total of four positioning rollers 91 provided for each of the two front and rear rollers capable of pressing and rolling the front and rear end faces of the segment 4 and two front positioning rollers 91 for front and rear. A pair of left and right hydraulic jacks 92 for reciprocating driving, a pair of left and right rotary actuators 93 for driving the two front positioning rollers 92 up and down around the horizontal axis in the front-rear direction, and the like.

When the lifter 32 that has received the segment 4 descends to the lowered position, the segment 4 is supported movably back and forth on the roller member 96 of the delivery vehicle 33. The positioning roller 91 on the front side is driven rearward by the jack 92, and the segment 4 is sandwiched and positioned forward and backward by two positioning rollers 91 at the front and rear.

Thereafter, when the roller member 84 is driven upward by the hydraulic jack 86 by the centering mechanism 80,
The roller member 84 is at a slightly higher level than the roller member 96 of the delivery cart 33, and the segment 4 is supported on the roller member 84 so as to be movable left and right.
A pair of centering rollers 81 with the left and right hydraulic jacks 83
Are driven in the direction in which they approach each other, and the centering roller 81 centers the segment 4 therebetween. Thereafter, the roller member 84 is driven downward by the hydraulic jack 86, and the segment 4 is again supported by the delivery cart 33.

The operation and effect of the segment supply device 7 will be described. With the hoist 62, the segments 4 transported from the shaft by the traveling vehicle 64 are transported from the delivery station 60 and loaded into the loading section 23 of the transporting vehicle 21. Usually, while excavating with shield excavator 1, 1
The 9-piece segment 4 for the ring is carried in from the carry-in section 23, and the first and second carry-in trolleys 20, 21 and the delivery trolley 3
After the tunnel T corresponding to one ring is excavated by the shield excavator 1, the 9-piece segments 4 are sequentially supplied to the erector 5.

When the nine-piece segment 4 is stocked on the first and second carrying vehicles 20 and 21 and the delivery vehicle 33, the segment 4 carried into the carrying section 23 of the second carrying vehicle 21 is moved by the step feed mechanism 31. , The next segment 4 is carried into the carry-in section 23. This operation is repeatedly performed, and when the leading segment 4 is transferred from the second transport vehicle 21 to the first transport 20, next, the first and second carry-in vehicles 20, 21 are moved by the step feed mechanisms 30, 31. The upper plurality of segments 4 are integrally moved forward one step.

In this way, the 8-piece segment 4
Is loaded and supported on the first and second carry-in carriages 20 and 21, and then, the step feed mechanisms 30 and 31 cause the first segment 4 at the front end of the first transport carriage 20 to move forward.
Is transferred to the lifter 32, and then the segment 4 is lowered together with the lifting frame 70, and the delivery truck 3 at the receiving position is moved.
Transferred to 3 and stocked. Segment 4 is lifter 3
When it is transferred from 2 to the delivery cart 33, it is positioned in the left-right direction and the front-rear direction by the centering mechanism 80 of the positioning mechanism 25 and the front-rear positioning mechanism 90. When the positioning roller 91 on the front side of the front / rear positioning mechanism 90 is tilted, the delivery cart 33 can be moved backward without interfering with the segment 4 immediately after the segment 4 is delivered to the erector 5.

When the segment 4 is supplied to the erector 5, the delivery cart 33 is driven forward from the receiving position to the delivery position, and the segment 4 is conveyed to the supply position. And then assembled on the inner surface of the tunnel T. When the delivery cart 33 is driven forward from the receiving position, the lifting frame 70 of the lifter 32 is driven up to receive the next segment 4.

This operation is repeatedly performed, and the segments 4 on the first and second carriages 20 and 21 are sequentially transported from the front side to the supply position and supplied to the erector 5. When the segment 4 is supplied to the erector 5 and the segment 4 is placed and supported only on the first carrier 20, only the step feed mechanism 30 of the first carrier 20 is driven, and the plurality of segments are driven. 4 is stepped forward.

According to this segment supply device 7, the rear working deck 6 on the rear side of the
Then, the front end of the first carrier 20 is connected so as to be towable, and the wheel 26 that rolls the bottom of the segment 4 covered with the inner surface of the tunnel is attached to the rear end of the first carrier 20. The height level of the front end portion of the first carrier 20 and the height of the erector 5 can be matched.

Therefore, the segments 4 can be smoothly transferred from the front end portion of the first transport carriage 20 to the lifter 32, and transferred from the lifter 32 to the delivery carriage 33, and the positioning mechanism 25.
Segment 4 positioned in the front-back direction and left-right direction with
Can be reliably transported to the supply position by the delivery cart 33.
And the productivity of lining the inner surface of the tunnel can be increased.

Further, the lifter 32 receives the segment 4 from the front end of the first transporting trolley 20 and lowers it, a receiving position for receiving the segment 4 from the lifter 32, and a transferring position for transferring the segment 4 to the erector 5. By providing the delivery truck 33 that is driven to move back and forth,
The segment 4 can be transported to the supply position without driving the first and second transport vehicles 20, 21 up and down or moving back and forth, so that the structure is extremely simplified and downsized, and the production cost is significantly reduced. And can be applied to small-diameter shield excavators.

Further, the nine-piece segments 4 for one ring can be placed and supported on the first and second transport vehicles 20, 21 and the delivery vehicle 33.
28 are caster wheels, the first and second transport carts 20 and 21 can be smoothly run in a curved tunnel and towed by the erector 5, and the first transport cart 2
Since the loading portion 23 of the second transport vehicle 21 connected to the first transport vehicle 20 can be positioned at the center in the width direction of the tunnel T, the plurality of segments 4 can be stably mounted on the first and second transport vehicles 20 and 21. The loading section 23 can be placed in the tunnel T
Is located at the center in the width direction, so that the segment 4 can be easily carried into the carry-in portion 23 by the hoist 62.

A modification of the above embodiment will be described. 1) In the above embodiment, the first and second carriages 20 and 21 capable of placing and supporting the eight-piece segments 4 by four pieces at a time.
However, the first and second transport vehicles 20 and 21 may be configured such that the segments 4 for one ring can be placed and supported in accordance with the diameter of the tunnel T and the like. 2] The second transporting cart 21 may be omitted, and a loading section 23 may be provided at the rear end of the first transporting cart 20. 3) Wheels may also be provided at the front of the first transport carriage 20 so as to be variable in height, and the wheels may be biased downward by a spring member or the like.

4] The plurality of dogs 41, 51 of the first and second transport carriages 20, 21 may be integrally driven by a common actuator. 5] The lifter 32 may be provided with the centering mechanism 80 of the positioning mechanism 25 and the front-rear positioning mechanism 90, or the delivery truck 33 may be provided with the centering mechanism 80 and the front-rear positioning mechanism 90 of the positioning mechanism 25.

6] The segment supply device according to the present invention
The present invention can be applied not only to the muddy shield excavator of the embodiment but also to various types and sizes of shield excavator by adding various changes without departing from the spirit of the present invention.

[0070]

According to the segment supply device of the present invention, at least the transfer carriage is provided to the rear work deck disposed on the rear side of the erector and integrally advanced with the erector according to the excavation of the tunnel by the connecting mechanism. The front end portion is connected to be able to be pulled, and a plurality of wheels for rolling the bottom of the segment covered on the inner surface of the tunnel are mounted on at least the rear end portion of the transport vehicle, so that at least the front end portion of the transport vehicle and the erector Can be matched, and the segments positioned in the front-rear direction and the left-right direction by the positioning means can be reliably transported to the supply position by the transport means. Therefore, the segment supply efficiency can be increased, and the productivity of lining the inner surface of the tunnel can be increased. Further, since it is not necessary to drive the entire carriage up and down or to move the carriage back and forth, the structure is extremely simplified and downsized, the manufacturing cost can be significantly reduced, and the invention can be applied to a small-diameter shield excavator.

Then, the segment transport means receives a segment from the front end of the transport carriage and lowers the lifter, a receiving position for receiving the segment from the lifter, and a transferring position for transferring the segment to the erector. Is provided, the segments on the transport trolley can be reliably transported to the supply position without having to drive the transport trolley up or down or to drive the transport trolley back and forth.

According to the segment supply device of the second aspect ,
The same effect as that of claim 1 is obtained, but the transport trolley has a first transport trolley connected to a rear work deck by the connection mechanism, and the loading section, and the transport trolley is arranged in series at the rear side of the first transport trolley. A second transport vehicle that is disposed and connected to the first transport vehicle, and the plurality of wheels are mounted from a rear end of the first transport vehicle to a rear end of the second transport vehicle. Even in a curved tunnel, the first and second transport vehicles are positioned at the center in the width direction of the tunnel, and a plurality of (eg, one ring) segments are stably placed and supported on the first and second transport vehicles. In addition, since the loading section of the second transport vehicle is also located at the central portion in the width direction of the tunnel, it is easy to load the segments into the loading section with a hoist or the like.

According to the third aspect of the present invention,
The same effect as that of claim 1 or 2 is obtained, but since the positioning means is provided on the lifter and the delivery truck, when the leading segment supplied to the erector is transferred from the lifter to the carrier truck, the front and rear directions and Positioning in the left-right direction can be ensured.

According to the segment supply device of the fourth aspect ,
The same effect as in claim 3 is obtained, but the positioning means has centering means provided on the lifter for positioning the segments in the left-right direction, and front-rear positioning means provided on the delivery truck for positioning the segments in the front-rear direction. Therefore, by these centering means and front-back positioning means, the leading segment supplied to the erector is
When transferring from the lifter to the carrier, positioning can be reliably performed in the front-rear direction and the left-right direction.

According to the segment supply device of the fifth aspect ,
The same effect as that of claim 1 or 2 is obtained, but the segment transport means is provided on the transport trolley and is provided with a plurality of roller members for supporting the segments so as to be able to transport the segment forward, and movably provided on the transport trolley in the front-rear direction. In addition, since a plurality of dogs are engaged with the rear ends of the plurality of segments so as to be disengageable, respectively, and an actuator capable of reciprocally driving the plurality of dogs in a predetermined stroke in the front-rear direction, the plurality of dogs are provided. By repeatedly performing an operation of driving a predetermined stroke forward and a predetermined stroke backward, a plurality of segments supported on a plurality of roller members can be stepped forward by a predetermined stroke.

According to the segment supply device of claim 6 ,
The same effect as that of the fifth embodiment is obtained, but a plurality of dogs of the first carriage are arranged in two rows on both left and right sides, and a plurality of dogs of the second carriage are arranged in two rows on both sides on the first carriage. Since it is arranged so as not to interfere with the dog of the cart, when the segment is mounted and supported on both the first and second transport carts,
The plurality of dogs of the first carrier and the plurality of dogs of the second carrier are reciprocally driven synchronously to drive the plurality of segments on the first and second carriers integrally forward, When the segment is mounted and supported on only one of the first and second transport vehicles, only the plurality of dogs of the one transport vehicle reciprocate without interfering with the plurality of dogs of the other transport vehicle. Driving can drive a plurality of segments forward.

According to the segment supply device of claim 7 ,
The same operation as in any one of claims 1 to 6 , wherein the delivery truck is supported by wheels rolling on the bottom of the segment lining the inside of the tunnel, and a plurality of guides are provided on the rear work deck. Since the delivery cart is guided in the front-rear direction by the rollers, the delivery cart can be smoothly and reliably moved between the delivery position and the delivery position.

According to the segment supply device of the eighth aspect ,
An effect similar to that of the second aspect is obtained, but since the plurality of wheels are caster wheels, the first and second transport vehicles can be smoothly run in a curved tunnel and towed by an erector.

[Brief description of the drawings]

FIG. 1 is a vertical sectional side view of a shield machine according to an embodiment of the present invention.

FIG. 2 is a vertical cross-sectional side view of a first transport vehicle, a lifter, and a delivery vehicle.

FIG. 3 is a partial cross-sectional plan view of a first transport cart, a lifter, and a delivery cart.

FIG. 4 is a sectional view taken along line IV-IV of FIG. 2;

FIG. 5 is a left side view of a plurality of dogs attached to a movable bar.

FIG. 6 is a plan view of a plurality of dogs attached to a movable bar.

FIG. 7 is an enlarged view of the dog of FIG. 5;

8 is a sectional view taken along line VIII-VIII in FIG.

FIG. 9 is a vertical cross-sectional side view of a second transport vehicle.

FIG. 10 is a partial cross-sectional plan view of a second transport vehicle.

FIG. 11 is a front view of a second transport vehicle.

FIG. 12 is a vertical sectional front view of a lifter, a delivery truck, and a positioning mechanism.

FIG. 13 is a cross-sectional plan view of a lifter, a delivery truck, and a positioning mechanism.

FIG. 14 is a vertical sectional side view of the delivery cart.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 shield excavator 4 segment 5 erector 6 rear work deck 7 segment supply device 9 e guide roller 20, 21 first and second transport trolleys 22 coupling mechanism 23 loading section 24 segment transport mechanism 25 positioning mechanism 26, 27, 28, 75 wheels 30, 31 Step feed mechanism 32 Lifter 33 Delivery cart 40, 50 Roller member 41, 51 Dog 42, 52 Hydraulic jack 80 Centering mechanism 90 Front-back positioning mechanism

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Akira Tokushige 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Kashima Construction Co., Ltd. (72) Inventor Susumu Uchiyama 1-3-1 Higashikawasaki-cho, Chuo-ku, Kobe-shi Kawasaki Heavy Industries, Ltd.Kobe Head Office (72) Inventor Hiroyoshi Iwata 1-3-1, Higashi Kawasaki-cho, Chuo-ku, Kobe City Kawasaki Heavy Industries, Ltd.Kobe Head Office (72) Inventor Koichi Tanaami 1-1, Higashi-Kawasaki-cho, Chuo-ku, Kobe City No. 3 Kawasaki Heavy Industries, Ltd. Kobe Head Office (56) References JP-A-5-179898 (JP, A) JP-A-8-312297 (JP, A) (58) Fields studied (Int. Cl. ⁶ , (DB name) E21D 11/40

Claims (8)

(57) [Claims] 1. An erector for assembling a segment on a wall of a tunnel excavated while advancing a shield machine,
In a segment supply device for supplying a segment, a transporting trolley disposed behind the erector, capable of placing and supporting a plurality of segments, and having a loading portion into which the segment is loaded at a rear end thereof, loading from the loading portion, segment conveying means der for transporting a plurality of segments to a supply position for supplying the erecta
Receiving the segment from the front end of the carrier and descending
Lifter and a receiver that receives segments from this lifter.
Picking position and delivery position for transferring the segment to the erecta
And a delivery trolley that is driven to move back and forth across the
Segment conveying means, positioning means for positioning the segments conveyed to the supply position in the front-rear direction and left-right direction, and a rear portion provided behind the erector and integrally advanced with the erector in accordance with excavation of a tunnel A connection mechanism for connecting at least a front end portion of the transport vehicle to the work deck so as to be able to tow, and a plurality of wheels mounted on at least a rear end portion of the transport vehicle and rolling on a bottom portion of a segment covered on a tunnel inner surface. A segment supply device comprising: 2. The vehicle according to claim 1, further comprising: a first transport vehicle connected to a rear work deck by the connecting mechanism; and a first transport vehicle having the loading portion, which is disposed in series at a rear side of the first transport vehicle. A second carriage connected to the carriage, wherein the plurality of wheels are mounted from a rear end of the first carriage to a rear end of the second carriage. 2. The segment supply device according to 1. Wherein said positioning means segments supply apparatus according to claim 1 or 2, characterized in that provided on the lifter and the transfer carriage. 4. The positioning device according to claim 1, wherein the positioning device includes a centering device provided on the lifter for positioning the segment in the left-right direction, and a front-rear positioning device provided on the delivery truck for positioning the segment in the front-rear direction. 4. The segment supply device according to 3 . 5. A plurality of roller members provided on a transport trolley for supporting a segment so as to be able to transport the segment forward, and a rear end of the plurality of segments provided on the transport trolley so as to be movable in the front-rear direction. The segment according to claim 1 or 2 , further comprising: a plurality of dogs each of which is removably engaged with each other; and an actuator capable of integrally reciprocating the plurality of dogs in a front-rear direction by a predetermined stroke. Feeding device. 6. The plurality of dogs of the first transport vehicle are arranged in two rows on both left and right sides, and the plurality of dogs of the second transport vehicle do not interfere with the dogs of the first transport vehicle in two rows on both left and right sides. The segment supply device according to claim 5 , wherein the segment supply device is arranged as follows. 7. The delivery cart is supported by wheels that roll on the bottom of the segment lining the inside of the tunnel, and is guided in the front-rear direction by a plurality of guide rollers on a rear work deck. segment supply device according to any one of claims 1 to 6. 8. The segment supply device according to claim 2 , wherein the plurality of wheels are caster wheels.