JP3098475B2 - Segment supply method and segment supply device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to relates to a segment supply method and segment feeding apparatus, and more particularly, to a technique in which the and segment easily <br/> the structure to enhance the segment feed efficiency supplied to erecta .

[0002]

2. Description of the Related Art Recently, while excavating a tunnel with a shield excavator, a segment is attached to a wall surface of the tunnel with an erector, and in a shield construction method for constructing an inner surface of the tunnel, a segment supply efficiency for supplying a segment to an erector is increased. In order to increase the productivity of lining the inner surface of a tunnel, various techniques for automatically supplying segments transported by a hoist or a traveling vehicle from a shaft to an erector have been put to practical use.

[0003] For example, Japanese Utility Model Publication No. 7-48800 discloses a hoist and an erector holding device capable of directly transferring segments in the air. The hoist gripping device includes an engaging pin slidably fitted in an outer cylinder attached to a lower end portion of a wire of the hoist and capable of engaging and disengaging a bolt hole of a segment, and an engaging pin advance / retreat mechanism for driving the engaging pin forward / backward. The outer cylinder is inserted into the concave portion of the segment, the engaging pin is engaged with the bolt hole from inside the concave portion, and the segment is gripped.

[0004] The gripper of the erector includes a swing arm pivotally supported by a sliding frame, a swing arm drive mechanism for swinging the swing arm, and an outer cylinder attached to the tip of the swing arm. An engaging pin that is movably fitted into the bolt hole of the segment, and an engaging pin advance / retreat mechanism that drives the engaging pin forward / backward, and swings into a concave portion of the segment gripped by the hoist gripping device. The outer cylinder at the distal end of the arm is inserted, and the engaging pin is engaged with the bolt hole and another bolt hole from within the concave portion to grip the segment, and then the engaging pin of the hoist is engaged. It is separated from the hole and the delivery of the segment is completed.

Japanese Patent Application Laid-Open No. Hei 5-179898 discloses that a plurality of segments are provided in a support frame on the rear side of an erector so as to be movable up and down (in the axial direction of a tunnel) and to be able to move up and down. A supply table that can be placed and supported on the table, a transport mechanism that integrally transports a plurality of segments on the supply table to the front erector side, a supply table front-rear drive mechanism that drives the supply table back and forth, and a vertical movement of the supply table A segment feeder with a driven feed pedestal elevating mechanism is described.

In this segment supply device, the transport mechanism supports the plurality of segments so as to be transportable on a plurality of roller members provided on the supply table, and causes the segment drive mechanism to advance the plurality of segments integrally. In the front end of the supply table, there is a horizontal centering roller, a horizontal centering device, a front / rear positioning stopper, a front / rear positioning pulling jack, etc., for positioning the first segment to be supplied to the next erector. A device is provided.

When a plurality of segments are integrally transported to the erector side by the transport mechanism, the leading segment is positioned by the positioning device at the front end portion of the supply table, and supplied by the supply table lifting / lowering mechanism and the supply table front-rear drive mechanism. When the height position of the table is adjusted and moved forward, the leading segment is located at a predetermined supply position that can be supplied to the erector, and in this state, the leading segment is gripped by the gripper of the erector and supplied to the erector. Thereafter, the supply table is moved backward by the supply table front-rear drive mechanism, and the segment conveyed by the hoist is loaded into the loading section at the rear end of the supply table. This operation is repeatedly performed, and the plurality of segments on the supply table are sequentially supplied to the erector from the front side.

[0008]

[Problems to be solved by the invention] 7-4880
In the gripping device for the erector of Japanese Patent Publication No. 0, a swing arm,
Since a swing arm drive mechanism, an engagement pin, an engagement pin advance / retreat mechanism, and the like must be provided, there is a problem that the structure becomes very complicated with a large number of parts, and the production cost becomes extremely high. Moreover, when gripping the segment, the outer cylinder at the tip of the swing arm must be positioned and inserted into the concave portion of the segment, and the engaging pin must be positioned and engaged with the bolt hole from within the concave portion. In some cases, the segment cannot be stocked, and there is a problem that the efficiency of supplying the segment to the erector is low.

In the segment feeder disclosed in Japanese Patent Application Laid-Open No. Hei 5-179989, a positioning device having a left-right centering roller, a left-right centering device, a front-rear positioning stopper, a front-rear positioning jack, and the like must be provided. In addition, in order to transport the segment to a predetermined supply position, the entire supply table must be driven up and down by the supply table lifting mechanism, and the entire supply table must be driven back and forth by the supply table front and rear drive mechanism. Also become very large. Therefore, the production cost becomes extremely high, and application to a small-diameter shield excavator becomes difficult.

An object of the present invention is to provide the applicable segments supply method and segment feeding device and can be reduced and manufacturing cost can the structure simplicity and compact small-diameter type shield machine.

[0011]

According to a first aspect of the present invention, there is provided a segment supplying method for supplying a segment to an erector for assembling the segment on a wall surface of a tunnel excavated by a shield machine. When the segment is transported from the loading portion of the supply table to the erector side by the segment transport means, the projection of the segment is guided by the guide rail provided on the supply table. Things.

In this segment supplying method, while the segment is conveyed from the carry-in portion of the supply table to the erector side by the segment conveying means, the projecting tool removably mounted at the center of the segment on the inner surface side of the tunnel is provided. Guided by guide rails provided on the table, segments can be easily
Since the electric power can be supplied to the erector while being reliably centered, the efficiency of segment supply to the erector can be improved.

In addition, when projecting a segment into a shaft, or transporting a segment from a shaft to a shield machine by a hoist, the projection can be used as a part for hanging a wire, and the segment can be transported. This is advantageous, and after the segment has been assembled to the wall of the tunnel, the protrusion can be removed from the segment and attached to the segment before assembly for reuse.

According to a second aspect of the present invention, there is provided a segment supply method.
In one aspect of the present invention, the erector is provided with an engagement portion facing the guide rail, and the projection is engaged with the engagement portion when the segment is transferred to the erector. Therefore, when transferring the segment to the erector, the projection of the centered segment,
Since the segments can be smoothly engaged with the engagement portions of the erector and the segments can be easily and reliably gripped by the erector, the segment supply efficiency can be further improved. Other operations are the same as those of the first aspect .

According to a third aspect of the present invention, there is provided a segment supply device for supplying a segment to an erector for assembling the segment on a wall surface of a tunnel excavated by a shield excavator. A feeder provided at the rear of the erector and integrally mounted with the erector to advance integrally with the erector, capable of mounting and supporting a plurality of segments, and carrying the segments at a rear end thereof. A table, a segment conveying means for feeding a plurality of segments on the supply table to the erector side by a predetermined stroke, and a guide rail provided on the supply table and guiding a projection of the segment conveyed by the segment conveying means. It is provided.

The segment carried into the carry-in section of the supply table, which advances integrally with the erector, is forwarded by a predetermined stroke to the erector side by the segment carrier means, and the step-feed is repeated and carried to the erector side. In the meantime, the protrusions attached to the segments are guided and centered by the guide rails, and are also positioned in the front-rear direction every time a predetermined stroke step feed is repeated.

Each time the segment is fed one step, the segment is carried into the carry-in section of the supply table, and a plurality of segments are placed and supported on the supply table at the predetermined stroke intervals. Therefore, when the plurality of segments placed and supported on the supply table are fed by a predetermined stroke step toward the erector side by the segment transport means, the leading segment is supplied to the erector in a state where it is centered and positioned back and forth. The segment is loaded into the loading section of the supply table. This operation is repeatedly performed, and the plurality of segments on the supply table are sequentially supplied to the erector from the front side.

[0018] 4. Segment supply device according to claim 3
In the invention of the above, the segment conveying means is provided on the supply table, a plurality of roller members for supporting the segments so that they can be conveyed, and provided on the supply table so as to be movable in the axial direction of the tunnel and at the rear end of the plurality of segments. A plurality of dogs each of which is detachably engaged, and an actuator capable of reciprocally driving the plurality of dogs in the direction of the tunnel axis by the predetermined stroke are provided.

In a state where the plurality of dogs are engaged with the rear end of the segment, respectively, when the plurality of dogs are driven forward by a predetermined stroke in the axial direction of the tunnel by the actuator,
The plurality of segments supported on the plurality of roller members are fed to the erector side by a predetermined stroke step. When the actuator is driven in the opposite direction, the plurality of dogs are disengaged from the rear ends of the plurality of segments, respectively, and are driven a predetermined stroke backward in the axial direction of the tunnel, so that the next step feed is possible. . Other effects are the same as those of the third aspect .

According to a fifth aspect of the present invention, there is provided a segment supply device.
In the invention of the fourth aspect , the segment conveying means is capable of reciprocating the predetermined stroke reciprocally at a front end of the supply table over a supply position protruding from the front end toward the erector side and a retreat position retracted on the front end of the supply table. And a supply movable base that is reciprocally driven integrally with the plurality of dogs by the actuator.

In a state where the supply movable base is located at the retracted position and the plurality of dogs are respectively engaged with the rear ends of the segments, the plurality of dogs and the supply movable base are integrally moved forward in the axial direction of the tunnel by the actuator. When a predetermined stroke is driven, a plurality of segments are sent to the erector side by a predetermined stroke step. At this time, the first segment is
It is driven forward together with the supply movable table, and is conveyed to the supply position while being transferred from the roller member onto the supply movable table.
When the plurality of dogs and the supply movable platform are integrally driven backward by a predetermined stroke in the tunnel axis direction by the actuator, the supply movable platform is retracted to the retracted position, and the next step feed is enabled. Other operations are the same as those of the fourth aspect .

According to a sixth aspect of the present invention, there is provided a segment supply device.
The invention according to any one of Items 3 to 5 , wherein the supply table includes a plurality of idler wheels that roll on segments lining the bottom of the tunnel. Therefore, since the cut with the supporting part of the feed table and loading of a plurality of segments placed on it with a plurality of idler wheels, it can be miniaturized to reduce the structural member of the feed table. Other claims
The same operation as any one of the items 3 to 5 is achieved.

[0023] The segment supply device according to the seventh aspect is characterized by the following.
In the invention as set forth in claim 6 , the supply table is connected to a rear work deck provided on a rear side of the erector. By connecting the supply stand to the rear work deck, it is possible to advance forward integrally with the erector,
The height level of at least the front part of the erector and the supply table can be matched to facilitate the segment supply to the erector, and the rear work deck can be supported by the supply table. Other operations are the same as those of the sixth aspect .

[0024]

Embodiments of the present invention will be described below with reference to the drawings. This embodiment is a segment holding device of an erector for assembling a segment on a wall surface of a tunnel excavated by a shield machine, a method of holding a segment with a segment holding device, a segment supply device for supplying a segment to an erector, and a segment supply device. This is an example of a case where the present invention is applied to a method of supplying a segment to an erector. It is assumed that the forward direction of the shield machine is forward.

As shown in FIGS. 1 to 3, a shield machine 1 includes a body member 2 including a front body and a rear body, and a cutter mounted on a front end of the body member 2 and rotationally driven by a cutter motor 10. It has a disc (not shown), a plurality of shield jacks 3 for driving the shield excavator 1 forward, and an erector 5 for assembling the segment 4 on the wall surface of the excavated tunnel T, and the like. , A rear work deck 6 that moves forward integrally with the erector 5, and a segment supply device 7 that supplies the segment 4 to the erector 5.

A chamber (not shown) into which excavated soil such as earth and sand excavated with a carter disk flows is formed at a front end portion inside the body member 2, and the excavated soil is muddy in the rear of the chamber. Pipe 11 for feeding water for cleaning into the chamber, and mud pipe 1 for discharging muddy water in the chamber
2 is plumbed. Although not shown, a mortar injection device for injecting mortar is also provided between the tunnel T and the segment 4 assembled by the erector 5.

The plurality of shield jacks 3 are arranged on the outer peripheral side of the support frame 15 and the rotating frame 20 of the erector 5, and the erector 5 assembles the plurality of segments 4 to cover one ring of the tunnel peripheral wall 16. Thereafter, the shield excavator 1 is driven forward by a reaction force that pushes the front end surfaces of the segments 4 rearward at the output portions 3a of the plurality of shield jacks 3. In addition, a roundness holding device 17 for rounding the reinforced segment 4 is provided behind the shield machine 1.

The erector 5 will be described. Figure 1,
As shown in FIGS. 2 and 4, the erector 5 includes a rotating frame 20, and a rotation driving mechanism 2 that rotationally drives the rotating frame 20.
1. A radial moving frame 22, which is connected to a rotating frame 20 so as to be movable in the radial direction, a radial moving frame 22
, A hydraulic jack (not shown) for driving the front and rear moving frame 24, and a hydraulic jack (not shown) for driving the front and rear moving frame 24, provided on the front and rear moving frame 24. Segment holding device 25 and the like provided.

The rotating frame 20 is disposed on the rear side of the support frame 15, and a ring-shaped guide portion 26 is provided on the outer peripheral portion of the rotating frame 20. It is rotatably supported through. Opening 20 at the center of rotating frame 20
A water pipe 11 and a drain pipe 12 are inserted through a, and the front end of the rear work deck 6 is connected to the support frame 15.

The rotation drive mechanism 21 includes an endless chain type rack member 3 fixed to the outer peripheral portion of the rotation frame 20.
0, a hydraulic motor 31 fixed to the support frame 15 and a sprocket 32 meshed with the rack member 30 and driven to rotate by the hydraulic motor 31. The hydraulic motor 31 is driven synchronously, and the sprocket 32 and the rack member 30 The rotary frame 20 is driven to rotate.

As shown in FIG. 2, the radial moving frame 2
A pair of guide rods 33 is provided at both end portions of the radially movable frame 22. The guide rods 33 are guided by a pair of guide members 34 fixed to the rotating frame 20. The rotary frame 20 is connected and supported by a hydraulic jack 23. A pair of left and right guide rods 35 extending rearward is provided at the center of the radial direction moving frame 22, and the front / rear moving frame 24 is slidably supported by these guide rods 35.

As shown in FIGS. 4 to 7, the segment holding device 25 includes a projection 40 removably mounted at the center of the segment 4 on the inner side of the tunnel, and a segment holding mechanism 41. 41 is an engaging portion 42 that engages with the projection 40 of the segment 4 in a detachable manner;
There is provided a pair of hydraulic jacks 43 for fixing the segment 4 to the front-rear moving frame 24 in a state where the projection 40 is engaged with the engaging portion 42.

The projections 40 attached to each of the plurality of segments 4 supplied to the erector 5 are formed in the same shape, and include a shaft portion 40a and a head portion 40b having a larger diameter than the shaft portion 40a.
And a tapered portion 40c connected to the shaft portion 40a and the head portion 40b.
And a leg portion 40d, and the leg portion 40d is screwed to a nut member 44 fixed to the segment 4 in a buried state.
Are mounted so as to protrude above the surface of the segment 4.

The segment gripping mechanism 41 is provided with a U-shaped engaging member 45 having an engaging portion 42 having an open rear end. The engaging member 45 is fixed to a lower end portion of the holding plate 46 with a plurality of bolts 46a, and a pair of brackets 47 erected from the holding plate 46 are attached to a support plate 48 fixed to the front-rear moving frame 24 by a spherical bearing 48a. And a connection pin 48b.

The engaging portion 42 of the engaging member 45 is
Engaging recess 4 with which the head portion 40b and the tapered portion 40c can be engaged
2a, an engagement hole 42b with which the shaft 40a of the projection 40 can be engaged, and an introduction hole 42 connected to the rear of the engagement hole 42b.
c, an engagement guide portion 42d formed at a rear portion of the introduction hole portion 42c and extending toward the rear, and a guide surface 42e formed at an upper surface of a rear end portion of the engagement guide portion 42d and lowered toward the rear.
The engagement recess 42a is formed slightly larger than the head 40b of the projection 40, and the front and rear widths of the engagement hole 42b and the introduction hole 42c are slightly larger than the shaft 40a of the projection 40. I have.

The segment supply device 7 will be described. As shown in FIG. 8 to FIG.
Is a projection 4 detachably attached to the segment 4.
0, a plurality of segments 4 disposed behind the erector 5 and integrally advanced with the erector 5 and the rear work deck 6;
Tables 50 and 51 that can support and support
A segment transport mechanism 52 for feeding the upper plurality of segments 4 to the front erector 5 side by a predetermined stroke step;
And guide rails 53 and 54 for guiding the projections 40 of the segment 4 conveyed by.

A central portion in the width direction of the rear end of the supply table 50 and a central portion in the width direction of the front end of the supply table 51 are rotatably connected by a vertical pin member. , Two pairs of left and right idler wheels 55 that roll on the segment 4 lining the bottom of the tunnel T are mounted on the front and rear sides, and the rear supply table 51 is mounted on the bottom of the tunnel T at the bottom. A pair of left and right idler wheels 56 that roll on the engineered segment 4 are mounted at equal intervals in the front and rear directions, and the front end of the supply table 50 is connected to the lower part of the rear work deck 6 at the center in the front and rear direction with a pin. The rear end of the supply table 50 is connected to the rear end of the rear work deck 6 (see FIG. 1), the front end of the rear work deck 6 is connected to the support frame 15, and the rear A part of the load of the work deck 6 is supported via the supply table 50 on the front side.

At the rear end of the rear supply table 51, there is provided a carry-in portion 57 into which the segment 4 carried by a hoist or the like in the tunnel from the rear shaft is carried. Each of the supply carts 50 and 51 is mounted on a support frame 60 curved substantially along the segment 4 at the bottom of the tunnel, a plurality of column members 61 erected on both right and left ends of the support frame 60, and a plurality of column members 61. A space surrounded by the support frame 60, the column members 61, and the beam members 62 becomes the transport passage 63 of the segment 4.

The segment transport mechanism 52 includes a supply table 50,
A plurality of roller members 70 provided on the 51 so as to support the segments 4 so as to be able to be conveyed, are provided on the supply tables 50 and 51 so as to be movable in the front-rear direction, and respectively engage with the rear ends of the plurality of segments 4 in a detachable manner. A plurality of dogs 71, a supply stand 5 on the front side
A movable movable supply 72 provided for reciprocating the predetermined stroke at a front end of the supply table 50 between a supply position protruding from the front end toward the erector 5 side and a retreat position retracted on the front end of the supply table 50; Multiple dogs 71 and movable carriage 72 for supply
And a hydraulic jack 73 and the like for integrally reciprocating the actuator.

The plurality of roller members 70 are provided on the supply tables 50 and 51 as four roller row groups 85 to 88. In each of the roller row groups 85 to 88, the plurality of roller members 70 are provided.
Are arranged alternately on the left and right for each one. Between the roller row groups 86 and 87, a movable member 80 including a pair of I-shaped steel members, which is long in the front-rear direction, is slidably supported by two guide members 85 extending in the front-rear direction on the support frame 60, The movable member 80 is provided with a pair of left and right dogs 71.
Are provided before and after at intervals equal to the predetermined stroke.

The movable member 80 of the front supply table 50 and the movable member 80 of the rear supply table 51 are rotatably connected at the boundary between the supply tables 50 and 51 via vertical pins. Supply carriage 72 is fixedly connected to the distal end portion of the front of the movable member 80 is guided supported on the support frame 60 via a plurality of rollers 81, the feed carriage 72 includes a plurality of receptacle 83 Are provided so as not to interfere with the segments 4 on the roller member 70.

The movable member 80 is reciprocated in the front-rear direction by the hydraulic jack 73, and the plurality of dogs 71 and the supply movable table 80 are reciprocated integrally with the predetermined stroke. The plurality of dogs 71 stand up during forward drive and engage with the rear end of the segment 4 to be able to push the segment 4 forward, and are pushed by the front end of the rear segment 4 during backward drive. And can be driven backward. However, each dog 71 is urged toward the rising side by a spring or a weight.

Guide rails 53, 54 provided on the supply tables 50, 51 are fixed to lower ends of stays 62a which are suspended from the center of the span of the beam member 62, and are provided at the center in the left-right direction of the transport passage 63. And extend back and forth. As shown in FIG. 9, the guide rail 54 of the rear supply table 51 is provided.
Is disposed on the front side of the carry-in portion 57, and a guide portion 54a that widens rearward is formed at the rear end thereof. The front end of the guide rail 54 and the rear end of the guide rail 53 are close to each other, and the rear end of the guide rail 53 is formed with a guide portion 53a that slightly extends rearward.

Next, the operation of the segment supply device 7 and the segment gripping device 25 will be described. First, the segment 4 conveyed from the shaft by a hoist or the like is carried into the carrying-in portion 57 of the supply table 51 on the rear side. At this time, precise positioning of the segment 4 is not required, and the protrusion 40
May unload the segment 4 to a position where it can be guided by the guide portion 54 of the guide rail 54.

The segment 4 loaded into the loading section 57 of the supply table 51 is transported by the segment transport mechanism 52 to the
Side, a predetermined stroke step feed is performed, and the step feed is repeated and conveyed to the erector 5 side, during which the protrusion 40 attached to the segment 4 is guided and centered by the guide rails 54, 53. And a pair of left and right dogs 71 provided on both left and right sides below the guide rails 53 and 54 are segmented.
The segment 4 is carried into the carry-in portion 57 of the supply table 51 every time the segment 4 is fed one step by engaging with the rear end portion of the supply table 51, and a plurality of segments 4 are fed into the supply tables 50 and 51. The segments 4 are placed and supported at the predetermined stroke intervals, and the foremost segment 4 reaches the front end of the front supply table 50. In addition, the supply tables 50 and 5
On top 1 is 7 for lining one ring on the inner surface of tunnel T
The number of segments 4 can be placed.

When the leading segment 4 located at the front end of the front supply table 50 is fed by a predetermined stroke step toward the erector 5 by the segment transport mechanism 42, it is driven forward with the supply movable table 72, and the roller member 70 is moved.
While being transferred onto the plurality of receiving members 83 of the supply movable table 72 from above, it is transported to a predetermined supply position where it can be supplied to the erector 5. In this way, when the plurality of segments 4 mounted and supported on the supply tables 50 and 51 are fed by a predetermined stroke step toward the erector 5 by the segment transport mechanism 52, the leading segment 4 is centered and positioned forward and backward. The plurality of segments 4 on the supply tables 50 and 51 are sequentially supplied from the front side to the erector 5 while being supplied to the erector 5 and repeating the import of the segments 4 into the import section 57 of the supply table 51.

On the other hand, the segment gripping device 2 for the
In 5, before the segment 4 is transported to the predetermined supply position by the segment supply device 7, the segment 4 is made to stand by at a predetermined grip position where the segment 4 can be gripped. Is transported to the first segment 4, the protrusion 40 of the first segment 4 is guided by the engaging member 45 of the segment gripping device 25,
2 and the segment 4 is transferred to the segment gripping device 25. Thereafter, the segment 4 is pressed downward by a pair of hydraulic jacks 43 and is held by the segment holding device 25 in a state where the posture is adjusted. The shield machine 3 contracts the shield jack 3 and advances the body member 2 every time the shield machine 1 excavates the length equal to the front-rear length of the segment 4. Moves forward.

As described above, when the segment supply device 7 conveys the segment 4 from the carry-in portion 57 to the erector 5 side by the segment conveyance mechanism 52, the projections 40 of the segment 4 are provided on the supply tables 50 and 51. Since the segment 4 is guided by the guide rails 53 and 54, the segment 4 can be supplied to the erector 5 while being centered and positioned forward and backward. And the segment 4 can be easily and reliably gripped, so that the efficiency of supplying the segment to the erector 5 can be increased, and the productivity of lining the tunnel peripheral wall 16 can be increased.

Further, the structure of the segment gripping device 25 can be simplified, and the segment supply device 7 does not require a separate segment positioning device for centering the segment 4 or positioning the segment 4 in the front-rear direction. Since it is not necessary to drive the whole 50, 51 up and down or to move back and forth, the structure is very simple and small, so that the manufacturing cost can be remarkably reduced, and it can be applied to a small-diameter shield excavator. .

Moreover, the segment 4 is loaded from the shaft,
In the case of transporting the shaft 40 from the shaft to the shield machine 1 by a hoist or the like, the protrusion 40 can be used as a portion for hanging the wire, which is advantageous in transporting the segment 4 and tunneling the segment 4. After assembling to the wall surface of T, the protrusion 40 is removed from the segment 4,
It can be attached to the segment 4 before assembly and reused.

Further, the idler wheel 55 is provided only at the rear of the supply table 50.
And the front end of the supply table 50 is connected to the rear work deck 6 by the pin connecting portion 59, so that the height levels of the guide rail 53 and the engaging portion 42 can always be matched, and the protrusion 40 The joint 42 can be smoothly introduced and engaged.

A modification of the above embodiment will be described. 1) The supply table 51 may be omitted, and the carry-in section 57 may be provided at the rear end of the supply table 50. 2] The front end of the guide rail 53 may be extended to near the rear side of the engaging portion 42. 3) An idler wheel may also be provided at the front of the supply table 50 at a variable height position, and the idler wheel may be biased downward by a spring member.

[0054] 4] engagement Rousset segment supply method to the present invention, the segment feeder adds the various changes without departing from the gist of the present invention is not limited to the muddy water type shield machine of the embodiment, It can be applied to various types and sizes of shield machines.

[0055]

According to the segment supply method of the first aspect , the projection is removably mounted in the center of the segment on the inner surface side of the tunnel, and the segment is moved from the loading portion of the supply table to the erector side by the segment transport means. When the segments are guided by the guide rails provided on the supply table, the segments are centered and supplied to the erector while the segments are transported from the loading section of the supply table to the erector side by the segment transport means. Therefore, the efficiency of segment supply to the erector can be increased, and the productivity of lining the inner surface of the tunnel can be increased.

According to the segment supply method of the second aspect ,
The same effect as that of claim 1 is obtained, but an engaging portion facing the guide rail is provided on the erector, and the projection is engaged with the engaging portion when the segment is delivered to the erector. Therefore, the segment supply efficiency can be further increased since the segment supply efficiency can be easily and reliably gripped.

According to the third aspect of the present invention,
While the segment is conveyed from the loading section of the supply table to the erector side by the segment conveyance means, a protrusion that is removably attached to the center of the segment on the inner surface side of the tunnel is guided by a guide rail provided on the supply table, Since the segments can be supplied to the erector while being centered simply and reliably, the efficiency of supplying the eleectors to the segments can be greatly improved, and there is no need to provide a separate segment positioning device, and the entire supply table can be driven up and down. Since it does not need to be driven back and forth, the structure is very simple and small. Therefore, the productivity of lining the inner surface of the tunnel can be increased, the production cost can be significantly reduced, and the invention can be applied to a small-diameter shield excavator.

According to the fourth aspect of the present invention, the same effect as in the third aspect is obtained, but the segment transport means includes a plurality of roller members provided on the supply table and supporting the segments so as to be capable of transporting the segments. A plurality of dogs movably provided in the tunnel axis direction and removably engaged with rear ends of the plurality of segments, respectively; and an actuator capable of reciprocating the plurality of dogs in the tunnel axis direction by the predetermined stroke. When a plurality of dogs are driven by a predetermined stroke forward in the axial direction of the tunnel with an actuator in a state where the plurality of dogs are engaged with the rear end of the segment, a plurality of Can be fed to the erector side by a predetermined stroke step.

According to the segment supply device of the fifth aspect ,
The same effect as that of the fourth aspect of the invention can be obtained, but the segment conveying means extends over a supply position protruding from the front end of the supply table toward the erector side and a retreat position retracted on the front end of the supply table. The supply movable table is provided so as to be reciprocally movable in the predetermined stroke and is reciprocally driven integrally with the plurality of dogs by the actuator.
Even if the plurality of dogs and the supply movable base are integrally driven forward by the actuator without driving the entire supply base forward, the leading segment is driven forward along with the supply movable base from the roller member. It can be transferred onto a movable table and transported to a supply position.

According to the segment supply device of claim 6 ,
The same effect as in any one of claims 3 to 5 is achieved, but the supply table is provided with a plurality of idler wheels rolling on the lining segment at the bottom of the tunnel, so that the supply table is located at the rear. By connecting to the work deck, it is possible to advance integrally with the erector, the height level of at least the front part of the erector and the supply table can be matched, the segment supply to the erector can be smoothed, and the rear work deck Can be supported by the supply stand.

According to the segment supply device of claim 7 ,
The same effect as that of claim 6 is obtained, but since the supply table is connected to the rear work deck provided on the rear side of the erector, it is possible to advance the erector integrally with the erector, and the At least match the height level at the front,
The supply of segments to the erector can be facilitated, and the rear work deck can be supported by the supply stand.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a rear end portion of a shield machine according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is a sectional view taken along line III-III in FIG. 1;

FIG. 4 is a view of a main part of an erector and a segment supply device.

FIG. 5 is a vertical sectional view of a segment gripping device for an erector.

FIG. 6 is a sectional view taken along line VI-VI of FIG. 5;

FIG. 7 is a sectional view taken along line VII-VII of FIG. 5;

FIG. 8 is a side view of the segment supply device.

FIG. 9 is a plan view of the segment supply device.

FIG. 10 is a front view of the segment supply device.

[Explanation of symbols]

 1 shield excavator 4 segment 5 erector 7 segment supply device. 25 Segment gripping device 40 Projection tool 41 Segment gripping mechanism 42 Engagement part 50, 51 Supply stand 52 Segment transport mechanism 53, 54 Guide rail 55, 56 Idling wheel 57 Loading part 70 Roller member 71 Dog 72 Supply movable base 73 Hydraulic pressure jack

────────────────────────────────────────────────── (5) References JP-A-8-199995 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) E21D 11/40

Claims (7)

(57) [Claims] 1. A segment supply method for supplying a segment to an erector for assembling the segment on a wall surface of a tunnel excavated by a shield machine, wherein a detachable projection is previously mounted on a central portion of the segment on the inner surface side of the tunnel. A segment supply method, wherein when the segment is conveyed from the loading section of the supply table to the erector side by the segment conveyance means, the projection of the segment is guided by a guide rail provided on the supply table. 2. The method according to claim 3, wherein an engaging portion facing the guide rail is provided on the erector, and a projection is engaged with the engaging portion when the segment is transferred to the erector. Segment supply method. 3. A segment supply device for supplying a segment to an erector for assembling the segment on a wall surface of a tunnel excavated by a shield machine, comprising: a projecting tool removably mounted at a central portion of the segment on the inner surface side of the tunnel; A supply table disposed behind the erector and integrally advanced with the erector, and having a carry-in portion capable of placing and supporting a plurality of segments and carrying the segments at a rear end thereof; A segment conveying means for feeding the plurality of segments to the erector side by a predetermined stroke step; and a guide rail provided on the supply table and guiding a projection of the segment conveyed by the segment conveying means. Segment feeder. 4. A plurality of roller members provided on a supply table and supporting a segment so as to be capable of transporting the segment, and a rear end portion of the plurality of segments provided on the supply table so as to be movable in a tunnel axial direction. 4. The segment supply device according to claim 3 , further comprising: a plurality of dogs each of which is detachably engaged with each other, and an actuator capable of driving the plurality of dogs to reciprocate the predetermined stroke in a tunnel axis direction. . 5. The predetermined stroke reciprocatingly movable between a supply position protruding from the front end of the supply table toward the erector side and a retreat position retracted on the front end of the supply table. 5. The segment supply device according to claim 4 , further comprising: a supply movable base that is equipped with the plurality of dogs and is reciprocally driven integrally with the plurality of dogs by the actuator. 6. Wherein said supply block, according to any one of claims 3-5, characterized in that it comprises a plurality of idler wheels rolling on the segments lining the bottom of the tunnel Segment feeder. 7. The segment supply device according to claim 6 , wherein the supply table is connected to a rear work deck disposed on a rear side of the erector.