JP3107205B2 - Electa device of shield machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an erector device for taking up a segment and assembling it on a tunnel pit wall to lining a tunnel, and more particularly to an erector body which can be driven to move in a radial direction of the tunnel with a large stroke or a small stroke. About things.

[0002]

2. Description of the Related Art Conventionally, as an excavator for excavating various shield tunnels (water and sewage tunnels, communication cable tunnels, etc.), an erector apparatus for covering a segment of a tunnel tunnel wall is applied. In general, the erector device includes a rotary drum, a rotary drive mechanism for rotating the rotary drum, an erector body mounted on the rotary drum and picking up a segment, and a diameter for moving the erector body relative to the rotary drum in a tunnel radial direction. It has a directional movement drive mechanism and a front-rear direction movement drive mechanism that drives the erector body to move in the tunnel axis direction.

Each time a tunnel for one ring is excavated by the shield machine, the erector apparatus lining the tunnel wall of the ring with a plurality of segments. In this case, pick up the segment with the erector body, move the segment upward, rotate it in the circumferential direction, move the segment to the position where it is to be assembled, and drive it radially outward to assemble it on the inner surface of the tunnel. Then, it is moved a small distance in the circumferential direction and rearward to make contact with the existing segment.

[0004] As the elector device, various devices are put into practical use. For example, in a segment gripping mechanism of a shield excavator described in Japanese Patent Application Laid-Open No. 7-18995, roller members provided on both sides of a support member for supporting a segment are rotated while contacting the inner peripheral surface of the segment. Then, while holding the segment, the segment is rotated by a predetermined angle around the axis in the tunnel radial direction to adjust the angle of the segment.

In the automatic segment assembling apparatus described in Japanese Patent Application Laid-Open No. 8-218792, the posture of a segment gripped by a gripping device around the front-rear axis is corrected by a pressing drive device for correcting the position in the tunnel radial direction. The posture of the segment around the axis in the radial direction of the tunnel is corrected by a front-rear drive unit for correcting the position of the segment in the front-rear direction, and the posture of the segment around the axis in the left-right direction is corrected by a rotary drive unit.

[0006] Recently, a two-stage shield excavator capable of changing the tunnel diameter large or small during the excavation of the tunnel has been put into practical use. In the erector device of such a two-stage shield excavator, when changing the tunnel diameter, the stroke of the radial movement drive mechanism of the erector device is insufficient, so the erector device is replaced or the erector device is modified. Needed. For example, when remodeling an erector device, when excavating a large-diameter tunnel, a distance piece is attached to the erector device, and the erector body having a grip portion is remodeled so that it can be extended to the inner peripheral surface of the large-diameter tunnel. When excavating a small diameter tunnel, the distance piece is removed to provide a radial movement drive mechanism suitable for the small diameter tunnel.

[0007]

SUMMARY OF THE INVENTION In the conventional erector device of a shield excavator, if the erector main body is configured to be able to move and move in a large diameter in a tunnel radial direction, a cylinder or the like for driving in a radial direction becomes longer, and the shield excavator becomes longer. It is impossible to rotate the erector device because the cylinder and the like interfere with the earth discharging facility such as a conveyor and a sludge discharging facility including a water supply pipe and a sludge pipe which are disposed in a penetrating manner through the inside of the cylinder. There was a limit to lengthening. On the other hand, the technique of remodeling the elector device by attaching and detaching the distance piece has a problem that a work load for mounting and removing the distance piece increases.

An object of the present invention is to provide an erector device which can be applied to both the segment assembly of a small-diameter tunnel and the segment assembly of a large-diameter tunnel, and which is excellent in versatility.

[0009]

According to a first aspect of the present invention, there is provided an erector device for a shield machine including a rotary drum, a rotary drive unit for rotating the rotary drum, and a gripper supported by the rotary drum and picking up a segment. An erector body comprising: an erector body; and a segment, which is mounted on the inner peripheral surface of the tunnel excavated by the shield machine. Two moving drive means are provided,
The first and second movement driving means are connected in series so that the first and second movement driving means can be operated independently, and the first movement driving means is fixed to the erector body.
The left and right pair of first guided members and these first guided members
A pair of left and right guides that can move in the tunnel radial direction
A pair of first guide mechanisms including a first guide member;
A pair of left and right first guided members is set in front of the first guided member of
A pair of left and right first wheels that can be driven to move in the radial direction of the tunnel
Moving means, and the second movement driving means comprises a pair of left and right
Left and right 1 respectively fixed to the first guide member via a connecting member
A pair of second guided members and a tunnel between these second guided members
A pair of left and right second guide members for guiding radially movably
And a pair of left and right fixedly connected to the rotating drum.
A pair of second guide mechanisms including two guide members;
A pair of left and right second guided members is provided for the pair of second guide members.
A pair of left and right second movable units that can be driven to move in the tunnel radial direction.
A driving means, wherein the pair of second guide members are respectively cylindrical.
And a top of the pair of connecting members.
An arch-shaped connecting frame that connects the two fixedly is provided.
It is a thing.

Here, connecting the first and second movement driving means in series means a connection state in which the movement amounts of the two movement driving means can be added and output. Since the first and second movement driving means are connected in series and the first and second movement driving means can be operated independently, one of the first and second movement driving means is stopped. , Only the other can be activated, or both the first and second movement drive means can be activated.

Therefore, when excavating a large-diameter tunnel,
By operating the second movement driving means, the erector body can be moved by a large stroke in the tunnel radial direction, and the segments can be assembled on the inner surface of the large diameter tunnel. Also, when excavating a small-diameter tunnel, one of the first and second movement driving means is held in a stopped state, and the other of the first and second movement driving means is operated to move and drive the erector body in the tunnel radial direction. The erector body can be moved by a small stroke in the radial direction of the tunnel, and the segments can be assembled on the inner surface of the small-diameter tunnel.

When the stroke of the first movement driving means is smaller than the stroke of the second movement driving means, only the first movement driving means is operated when the tunnel diameter is minimum, and only the second movement driving means is operated when the tunnel diameter is medium. , And when the diameter of the tunnel is the maximum, it is possible to switch to three stages, for example, to activate both the first and second movement driving means.

[0013] Then, the first moving drive means, d Lek <br/> first guided member has been both-side fixed to the motor body and these <br/> first the tunnel radially guided member A pair of first guide members including a pair of left and right first guide members for movably guiding the first and second pair of first guided members to the pair of left and right first guide members. Can be driven to move in the direction
A pair of left and right first drive means is provided , and a pair of first guide mechanisms are provided in the first movement drive means, so that the guide can be stably guided when driven by the pair of first drive means, Operational stability and reliability can be ensured .

[0014] Then, the second movement driving means, left and right
Left fixed respectively to the pair of first guide members via a connecting member
Right pair second pair of left and right second movably guided to the guided member and these second guided member to the tunnel radial
Left and right guide members fixedly connected to the rotating drum
A pair of second guide members (whether each second guide member is a cylindrical member)
Ranaru) and a pair of second guide mechanism including: a left and a right pair
And a second driving means a second guided member a pair of left and right movement can be driven right-and-left to the tunnel radially with respect to the second guide member, a pair of the second movement driving means Second
Since the guide mechanism is provided, the guide can be stably provided when the second drive means moves and drives, and operation stability and reliability can be ensured .

In the first movement driving means, a pair of first
With a pair of left and right first drive means while being guided by one guide mechanism
Because it can be driven, the operational stability of the first moving drive mechanism is reliable
Performance and durability. In addition, each first guide mechanism and
And the first drive means can be reduced in size.
Is also advantageous. Similarly, in the second movement driving means, the left and right 1
A pair of left and right second drives while being guided by the pair of second guide mechanisms
Operation of the second movement driving means
Reliability, reliability and durability. Individual second guide mechanism
And the size of the second driving means can be reduced,
But it is advantageous.

The erector apparatus of the shield machine according to claim 2 is the invention of claim 1, the tunnel excavation direction forward, first moving drive means, and the tunnel radius behind the second movement driving means It is arranged to be displaced a predetermined distance outward in the direction.

Therefore, the total height (total length) of the first and second moving driving means can be kept low, and the first and second moving driving means are arranged so as not to interfere with the earth discharging equipment and the mud discharging equipment. Can be. Other operations are the same as those of the first aspect .

[0018]

Embodiments of the present invention will be described below with reference to the drawings. Since the erector device of the shield machine according to the present embodiment is characterized by a mechanism for moving and driving the erector main body in the radial direction of the tunnel, the shield machine itself will be briefly described. In the following description, the direction of excavation will be referred to as forward, and the left and right toward the front will be referred to as left and right.

The shield excavator 1 will be described. As shown in FIGS. 1 and 2, the shield excavator 1 excavates a large-diameter tunnel first, and switches to a small-diameter tunnel at a predetermined position after the excavation is completed. It is a two-stage shield machine that excavates. The shield machine 1 includes a cutter disk (not shown) for excavating a face, a large-diameter front body 2, a large-diameter rear body 3, and a small-diameter front body 4 concentrically arranged inside the large-diameter front body 2. A bent body 5 connected to the rear end of the small-diameter front body, a plurality of shield jacks 8 for generating excavating thrust, an erector device 17 for lining a segment on the inner surface of the tunnel wall, and discharging excavated earth and sand to the outside. And a mud discharging facility (not shown) or the like.

A cutter disk is provided at the front end of the shield machine 1 and a large-diameter front body 2 is provided at the rear side of the cutter disk.
And a small-diameter front body 4 provided at the rear end of the small-diameter front body 4, a center-folding body 5 is connected so as to be able to be folded, and a large-diameter rear body 3 and a small-diameter rear body front end 6 are provided behind the center-folding body 5. Are arranged concentrically. The illustrated shield machine 1 excavates a large-diameter tunnel, and when excavating a small-diameter tunnel, the shield machine 1 is modified for the small-diameter tunnel. In this case, the small-diameter rear body 7 is welded to the small-diameter rear body front end 6 to form a large-diameter front body 2.
Intends line the excavation of the small-diameter tunnel and left behind a large径後cylinder 3 in the ground.

An annular web member 9 is provided on the inner peripheral side of the center folding cylinder 5 over the entire circumference, and a plurality of shield jacks 8 arranged in the front-rear direction are formed in the annular web member 9 in a penetrating manner. It is fixed to. An eccentric fitting 10 is attached to the tip of the piston rod of each shield jack 8, and the eccentric fitting 1
The first and second hemispherical convex portions 11 and 12 having different radial positions with respect to the piston rod are formed on the rear end surface of the piston rod 0.

When excavating a large-diameter tunnel, each eccentric fitting 10 is positioned as shown in FIG. 2, a spreader 13 is loosely bolted to the first hemispherical convex portion 11, and the spreader 13 is connected to the large-diameter tunnel. A plurality of shield jacks 8 to generate excavating thrust. When excavating a small diameter tunnel, each eccentric fitting 10
Is rotated from the position by a predetermined angle, and the second hemispherical convex portion 12 is rotated.
Then, the spreader 13 is loosely bolted to abut the segment S for the small-diameter tunnel, and a plurality of shield jacks 8 generate a digging thrust. In addition, small diameter rear trunk 7
A tail seal 16 is provided at the rear end of the large-diameter rear body 3.

Next, a description will be given of the elector device 17 unique to the present invention. As shown in FIG. 1 to FIG.
Reference numeral 7 denotes a rotary drum 18, a rotary drive mechanism 19 (rotation drive means) for rotating the rotary drum 18, an erector body 20, and a first movement drive for moving the erector body 20 in a common tunnel radial direction. A mechanism 23 (first movement driving means) and a second movement driving mechanism 24 (second movement driving means) are provided.

The rotary drum 18 is for supporting the erector body 20 and the first and second movement driving mechanisms 23 and 24 and rotating them around the axis of the tunnel.
Are rotatably supported from the outside by four support rollers 27 and are rotationally driven by the rotation drive mechanism 19. FIG.
As shown in FIG. 3, a bracket 25 is fixed to the small-diameter rear body front end 6 at a position equally divided into four circumferences, and a support roller 27 is rotatable at the front end of each bracket 25 via a pivot plate 26. , And the rotating drum 18 is rotatably supported by four support rollers 27.

With respect to the rotary drive mechanism 19, the rotary drum 1
A drive motor 28 for rotating the drive 8 is mounted on the annular web material 9, a sprocket 29 is mounted on the tip of an output shaft of the drive motor 28, and a rack is provided on the inner circumferential surface of the rotary drum 18 over the entire circumference. Fixed chain 30 as a member
Is fixed, the sprocket 29 is meshed with the fixed chain 30, and the driving drum 28 allows the rotary drum 18 to rotate in the normal rotation direction and the reverse rotation direction via the sprocket 29 and the fixed chain 30.

The erector body 20 will be described. As shown in FIG. 1, FIG. 2, FIG. 5, and FIG.
Is supported by the rotating drum 18 via a first movement driving mechanism 23 and a second movement driving mechanism 24. Electa body 2
At the lower end of 0, there is provided a gripper 51 which engages with a suspending fitting provided in a concave portion at the center of the segment S and picks up the segment S.

The erector main body 20 has an upper main body 21 and a lower main body 22, and the upper main body 21 is provided with the first moving drive mechanism 2.
3 and the lower body 22 is fixed to the upper body 21. The lower body 22 has a pair of front and rear wall members 30 and a connecting plate portion 31, and a front and rear driving cylinder 32 is disposed inside the pair of wall members 30, and a pair of wall members is provided. 30 has a circular hole 3 through which the front and rear drive cylinder 32 can pass.
6, 37 are formed. The cylinder body 33 of the front-rear drive cylinder 32 can move back and forth through the circular holes 36 and 37. At the front end side of the lower body 22, a connecting plate portion 31 is projected, and a pair of left and right brackets 43 is fixed to the upper surface of the connecting plate portion 31, and a connecting bracket 35 at the front end of the piston rod 34 of the front-rear drive cylinder 32. Is a pair of brackets 4
3 is pin-connected with a pin 44. The front-rear drive cylinder 32 is connected to a hydraulic supply device (not shown).

A pair of left and right guide rods 38 are mounted on the pair of wall members 30 in the front-rear direction. A carriage 39 is fixed to the cylinder body 33 of the front-rear drive cylinder 32. The guided portion 40 is slidably fitted to the left and right guide rods 38, and the carriage 39 is a grip portion 51 protruding downward therefrom,
For example, a hook-shaped grip portion 51 for picking up the segment S is provided. In a state in which the holding portion 51 is engaged and connected to the hanging bracket of the segment S, the first and second moving drive mechanisms 23 and 24 raise the erector body 20 to lift the segment S. , The carriage 39 is driven back and forth to move the segment S back and forth.

Next, the first movement driving mechanism 23 will be described. As shown in FIG. 1, FIG. 2, FIG. 4, and FIG. 6, a first movement drive mechanism for moving the left and right ends of the upper body 21 of the erector body 20 in the tunnel radial direction (vertical direction in the figure). 23, and the first movement driving mechanism 23 is
Left and right 1 for guiding the erector body 20 in the tunnel radial direction
A pair of first guide mechanisms 45 and a pair of left and right first drive mechanisms 46 that move and drive the erector body 20 in the guide direction are provided.

With respect to each of the first guide mechanisms 45, a column-shaped first guided member 47 is fixed upright at the front of the upper body 21 of the erector body 20.
A guide member 48 is externally slidably fitted. The first guided member 47 is guided by the first guide member 48 so as to be movable in the vertical direction.

The first driving mechanism 46 corresponding to the first guide mechanism 45 has a predetermined stroke and has a first stroke.
The first cylinder 50 is mainly composed of a hydraulic cylinder parallel to 7. The middle part of the cylinder body of the first cylinder 50 is rotatably and trunnion-connected to the first guide member 48 by a connector 53, and the tip of the piston rod 52 of the first cylinder 50 is pinned to the upper body 21 of the erector body 20. Are linked. When the piston rod 52 of the first cylinder 50 is extended, the erector body 20 is driven to move outward (downward in the case of the drawing) in the tunnel radial direction, and when the piston rod 52 is retracted, the erector body 20 is moved inward in the tunnel radial direction. (In the case shown, it is moved upward).

Next, the second movement driving mechanism 24 will be described.
As shown in FIGS. 1, 3, 4 and 6, the second movement driving mechanism 24 uses the pair of left and right first guide members 48 to rotate the rotary drum 1.
8 and a pair of left and right first guide members 4
8 is moved in a direction parallel to the guide direction (vertical direction in the figure).
Are connected so as to operate in series with the first movement drive mechanism 23.

The second moving drive mechanism 24 includes a pair of left and right second guide mechanisms 54 for guiding a pair of left and right first guide members 48 in a direction parallel to the guide direction thereof, and a pair of left and right first guide members. A pair of left and right second driving mechanisms 55 for driving the member 48 in a direction parallel to the guiding direction thereof, four connecting members 62,
One connection frame 69 and the like are provided. A frame 56 for supporting each of the second guide mechanisms 54 and the corresponding second drive mechanism 55 is fixedly provided on the rotary drum 18, and support portions 57 and 58 are integrally formed on the upper and lower ends of the frame 56, respectively. I have.

With respect to each second guide mechanism 54, a column-shaped second guide member 59 is formed by upper and lower support portions 57, 57 of the frame 56.
A second guided member 60 is slidably fitted to the second guide member 59. Second guided member 60
A guide hole 61 having a circular cross section is formed in a longitudinal direction in the inside thereof, and a second guide member 59 is inserted into the guide hole 61. The second guided member 60 is a second guiding member 59.
Are guided so as to be movable in the guide direction (vertical direction in the illustrated case).

A first guide member 48 is provided on each of the left and right sides.
And the second guided member 60 are integrally connected by a pair of upper and lower connecting members 62 inclined forward by 45 degrees. Thus, the first movement driving mechanism 23 is
4 and is displaced a predetermined distance outward in the radial direction of the tunnel, and the first and second movement driving mechanisms 23,
24 are connected so as to operate in series (that is, they can add and output the amount of movement). Arch-shaped connecting frame 6 for connecting the upper parts of the upper left and right connecting members 62
The lower end portions of the left and right sides of the connecting frame 69 are fixed to brackets 70 fixed to the left and right connecting members 62, respectively.

The middle part of the cylinder body of the second cylinder 63 composed of a hydraulic cylinder as each second drive mechanism 55
It is trunnion-connected to the second guided member 60 via a connection tool 66. Piston rod 65 of second cylinder 63
Is connected to the supporting portion 57 of the frame 56 via connecting members 67 and 68. Left and right pair of second cylinders 6
3 is driven to extend, the second guided member 60 is driven to move outward (downward in the case of the drawing) in the tunnel radial direction, and when the pair of left and right second cylinders 63 is driven to retract, the second guided member 60 is moved. The guide member 60 is driven to move inward (in the illustrated example, upward) in the tunnel radial direction. The left and right first and second cylinders 50 and 63 are connected to a hydraulic pressure supply device.

The operation of the shield machine 1 will be described. As shown in FIGS. 1 and 6 to 8, the shield excavator 1 rotates a cutter disc to excavate a face while generating excavation thrust by a plurality of shield jacks 8 while excavating a predetermined distance (for one ring). The excavation is stopped every time the excavation is performed, and the assembling of the segments S for one ring is performed by the erector device 17. Hereafter, the tunnel is dug by repeating the above. When excavating the large-diameter tunnel and starting excavation of the small-diameter tunnel after completion of the excavation of the large-diameter tunnel, the small-diameter rear trunk 7 is welded to the small-diameter rear trunk front end 6 on the outer periphery of the rear end of the half-folded cylinder 5, The large-diameter front trunk 2 and the large-diameter rear trunk 3 are left in the ground, and the small-diameter front trunk 4, the center-folded trunk 5, and the small-diameter rear trunk front end 6.
A small-diameter tunnel is excavated as a small-diameter shield excavator having a small-diameter rear trunk 7. Incidentally, the cutter disk is also modified into a small-diameter cutter disk.

Next, the operation and effects of the elector device 17 will be described. As shown in FIGS. 1 and 6 to 8, when excavating a large diameter tunnel and lining the inner surface of the tunnel with the erector device 17, the first and second movement driving mechanisms 23 and 2 are used.
4 is operated so that the erector body 20 can be approached to the inner surface of the tunnel, and the segments S are assembled. In this case, since the segment S is carried into the tunnel bottom,
The erector main body 20 of the erector device 17 is directed downward, and the left and right first and second cylinders 50 and 63 of the first and second movement driving mechanisms 23 and 24 are extended and driven as shown in FIG. 20 is brought close to the segment S, and the grip portion 51 is engaged with the hanging metal fitting on the segment S so that the segment S can be lifted.

Next, for example, as shown in FIG. 8, the left and right first cylinders 50 are driven to retract to raise the segment S by a predetermined distance, and then the rotary drum 18 is rotated to rotate the segment S around the circumference. To the assembling position, and then the left and right first cylinders 50 are extended and driven to move the erector body 20 and the segment S a small distance in the circumferential direction while pressing the segment S against the inner surface of the tunnel. Is brought into contact with one end in the circumferential direction of the existing segment, and the erector main body 20 and the segment S are moved backward by a small distance by the front-rear drive cylinder 32 so that the segment S comes into contact with the front end of the existing segment. afterwards,
The segment S is bolted to the existing segment so as to be continuous therewith. Thereafter, the left and right first cylinders 50 are expanded and contracted while the left and right second cylinders 63 are held in the extended state, and the next segment S
Are sequentially repeated to assemble the segments S for one ring. Thereafter, tunnel excavation is resumed.

When lining the inner surface of the small-diameter tunnel, as shown in FIG. 6, the left and right piston rods of the second cylinders 63 of the second moving drive mechanism 24 are held in a retracted and stopped state. The first moving drive mechanism 23 moves and drives the erector body 20 in the tunnel radial direction. Therefore, if necessary, a temporary fixing piece 72 is provided in the gap 71 between the second guided member 60 and the support portion 58 on each of the left and right sides.
And fix the second guided member 60 to the frame 56. In this state, the segment S is assembled by the erector device 17 in substantially the same manner as in the case of the large-diameter tunnel.

According to the above-described erector device 17 of the shield machine, the first and second moving drive mechanisms 23 and 24 for driving the erector body 20 to move in the common tunnel radial direction with respect to the rotating drum 18 are provided. Since the first and second movement driving mechanisms 23 and 24 are connected in series and can be operated independently, the first and second movement driving mechanisms 23 and 2 can be operated independently.
4 is operated to increase the moving stroke of the erector body 20 in the radial direction of the tunnel, to make the erector body 20 accessible to the inner surface of the large-diameter tunnel, and to assemble the segment S in the large-diameter tunnel. 1, Only one of the second movement drive mechanisms 23 and 24 is operated to reduce the moving stroke of the erector body 20 in the tunnel radial direction, and the erector body 20 can be made closer to the inner surface of the small diameter tunnel, so that the The segment S can be assembled, and the versatility is excellent.

The switching between the activation and deactivation of the first and second movement driving mechanisms 23 and 24 can be performed only by operating the valve of the hydraulic pressure supply device, and can be switched without modifying the elector device 17. Work load is low, and productivity of tunnel excavation can be increased. A first guide mechanism 45 including a first guided member 47 in which the first movement drive mechanism 23 is fixed to the erector body 20 and a first guide member 48 for guiding the first guided member 47 so as to be movable in a tunnel radial direction. And the first guided member 47 with respect to the first guiding member 48.
Drive mechanism 46 that can move and drive the motor in the tunnel radial direction.
Since it is possible to stably guide the first drive mechanism 46 with the first guide mechanism 45 when driving the first drive mechanism 46, operation stability and operation reliability can be ensured.

The second moving drive mechanism 24 is connected to the first guide member 48.
A second guide mechanism 54 including a second guided member 60 fixed to the second guide member 59 and a second guide member 59 for guiding the second guide member 59 movably in the tunnel radial direction;
And a second drive mechanism 55 that can move and drive the second guided member 60 in the tunnel radial direction.
When driven by the drive mechanism 55, the guide can be stably provided by the second guide mechanism 54, so that operation stability and operation reliability can be ensured.

Since the first movement drive mechanism 23 is disposed behind the second movement drive mechanism 24 and displaced outward by a predetermined distance in the radial direction of the tunnel, the first and second movement drive mechanisms 2 are provided.
The total height (total length) of the first and second movable driving mechanisms 23 and 24 can be reduced so that the first and second moving driving mechanisms 23 and 24 do not interfere with the earth discharging facility or the mud discharging facility. And
The first movement drive mechanism 23 has a pair of left and right first guide mechanisms 45 and a first drive mechanism 46, and the second movement drive mechanism 24 has a pair of left and right second guide mechanisms 54 and a second drive mechanism 55. Therefore, in the first movement driving mechanism 23, a pair of left and right first
Since it can be driven by the pair of left and right first drive mechanisms 46 while being guided by the guide mechanism 45, operation stability, reliability and durability of the first movement drive mechanism 23 can be ensured.

Since each of the first guide mechanism 45 and the first drive mechanism 46 can be reduced in size, it is advantageous in terms of their arrangement. Similarly, the second movement drive mechanism 24 can be driven by the pair of left and right second drive mechanisms 55 while being guided by the pair of left and right second guide mechanisms 54. Certainty and durability can be secured. Since each of the second guide mechanism 54 and the second drive mechanism 55 can be reduced in size, it is advantageous in terms of their arrangement.

As an example of partially changing the above embodiment, the moving stroke A of the first moving driving mechanism 23 and the moving stroke B of the second moving driving mechanism 24 are set to be different from each other, and A <B When only the first movement drive mechanism 23 is operated, the movement stroke is A, and when only the second movement drive mechanism 24 is operated, the movement stroke is B. The first and second movement drive mechanisms 23, By operating 24, the movement stroke can be set to A + B,
Applicable to segment assembly during excavation of small, medium and large diameter tunnels. In addition, various other changes may be made without departing from the spirit of the present invention.
Can of course be implemented.

[0047]

According to the erector device of the shield machine according to the first aspect, the first and second movement driving means for moving and driving the erector body in the common tunnel radial direction with respect to the rotary drum are serially provided. The first and second moving driving means are connected to each other so that they can be operated independently.
One of the moving driving means can be stopped and only the other can be operated, or both the first and second moving driving means can be operated.

Therefore, when excavating a large-diameter tunnel,
By operating the second movement driving means, the erector body can be moved by a large stroke in the tunnel radial direction, and the segments can be assembled on the inner surface of the large diameter tunnel. Also, when excavating a small-diameter tunnel, one of the first and second movement driving means is held in a stopped state, and the other of the first and second movement driving means is operated to move and drive the erector body in the tunnel radial direction. The erector body can be moved by a small stroke in the radial direction of the tunnel, and the segments can be assembled on the inner surface of the small-diameter tunnel. Also, depending on the arrangement of the first and second moving driving means, the total length thereof can be made small, so that the first and second moving driving means can be provided so as not to interfere with the earth discharging equipment, the mud discharging equipment and the like. . Also, when excavating a tunnel having an elliptical cross section or an elliptical cross section, the segments can be covered by appropriately operating the first and second movement driving means.

[0049] Then, right and left first movable driving means movably guiding the first guided member and these first guided member a pair of left and right fixed to Elekta body into the tunnel radially
A pair first guide mechanism comprising a first guide member of a pair, the left
A pair of left and right first guide members capable of driving a pair of left and right first guided members in a tunnel radial direction with respect to a pair of right first guide members.
E Bei and drive means, for providing a first guide mechanism of one to the first movement driving means can be stably guided when moving driven by the first drive means a pair of operational stability, reliability Can be secured .

Further , the left and right pair of second moving driving means are fixed to the pair of left and right first guide members via connecting members, respectively .
And a second guided member and a pair of right and left second guide member movably guided to these second guided member to the tunnel radial (the second guide member is made of a cylindrical member)
A pair of second guide mechanism, e Bei and second driving means of the second moving drivable right and left pair of guided member to the tunnel radially pair of left and right relative to the second guide member a pair of left and right Since a pair of second guide mechanisms are provided in the second movement driving means, stable guidance can be provided when the pair of second driving means move and drive, and operation stability and reliability can be ensured .

Further , the first movement driving means is a pair of left and right
1st guide mechanism and 1st drive means, 2nd movement drive means
Has a pair of left and right second guide mechanisms and second drive means
Therefore, in the first moving drive means, a pair of left and right first guide mechanisms is provided.
Can be driven by a pair of left and right first driving means in the state guided by
From the operating stability, reliability and durability of the first moving drive means
Can be secured. Each of the first guide mechanism and the first drive means
Since they can be miniaturized, they are also advantageous in terms of their arrangement.

[0052] The pair of second guide members is a columnar member.
However, the upper portions of the connection members are fixedly connected to each other.
An arch-shaped connecting frame is provided, and as described above,
In the second movement driving means, guidance is provided by a pair of left and right second guide mechanisms.
Can be driven by a pair of left and right second driving means in the
Ensuring operational stability, reliability and durability of the second moving drive means
it can. Individual second guide mechanism and second drive means are downsized
This is advantageous in terms of their arrangement. Also,
Can space be provided in the center of the lector device?
In addition, it is also advantageous in terms of the arrangement of earth removal equipment and sludge equipment.

According to the second aspect of the present invention, since the first moving driving means is disposed behind the second moving driving means and displaced outward by a predetermined distance in the radial direction of the tunnel, the first and second moving driving means are disposed. The total height (total length) of the driving means can be kept low, and the first and second moving driving means can be arranged so as not to interfere with the earth discharging equipment or the mud discharging equipment. Other claim 1
It has the same effect as.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a two-stage shield machine according to an embodiment of the present invention.

FIG. 2 is a rear view of the shield machine.

FIG. 3 is a sectional view taken along line AA of the shield machine.

FIG. 4 is a plan view of the erector device.

FIG. 5 is an enlarged sectional view of a lower main body of the erector main body.

FIG. 6 is a side view of the erector device.

FIG. 7 is a view corresponding to FIG. 6 in a state where the first and second cylinders are extended.

FIG. 8 is a view corresponding to FIG. 6 with the second cylinder extended.

[Explanation of symbols]

S segment 1 shield excavator 8 shield jack 17 elector device 18 rotary drum 19 rotation drive mechanism 20 elector body 23 first movement drive mechanism 24 second movement drive mechanism 27 support roller 28 drive motor 45 first guide mechanism 46 first drive mechanism 54 second guide mechanism 55 second drive mechanism 62 connecting member 69 connecting frame

Claims (2)

(57) [Claims] 1. A rotating drum, a rotating drive means for rotating the rotating drum, and an erector body supported by the rotating drum and including a gripper for picking up a segment, wherein a segment is formed on an inner surface of a tunnel excavated by a shield machine. The first and second movement driving means for moving and driving the erector body in the common tunnel radial direction with respect to the rotary drum are provided, and these first and second movement driving means are connected in series. And the first and second movement driving means can be operated independently, and the first movement driving means is connected to the left
The right pair of first guided members and the first guided members are
A pair of left and right first guides that can move in the tunnel radial direction
A pair of first guide mechanisms including a guide member;
The pair of left and right first guided members is
A pair of left and right first driving hands that can be driven to move in the radial direction of the channel
And the second movement driving means is connected to a pair of left and right first guide members.
A pair of left and right second guided portions each fixed via a binding member
Material and these second guided members can be moved in the tunnel radial direction
A pair of left and right second guide members for guiding
A pair of left and right second guide members fixedly connected to the
A pair of second guide members, and the left and right pair of second guide members.
A pair of second guided members on the left and right with respect to the tunnel radius
A pair of left and right second driving means that can be driven to move in
The pair of second guide members are each formed of a columnar member.
At the same time, the upper portions of the pair of connecting members are fixedly connected to each other.
An erector device for a shield machine, wherein an arch-shaped connecting frame is provided . 2. The apparatus according to claim 1, wherein the first movement driving means is disposed behind the second movement driving means and displaced by a predetermined distance outward in the tunnel radial direction, with the tunnel excavation direction being the front. Item 2. An elector device for a shield machine according to item 1 .