JP3360103B2 - Elector gripping device and erector using the same - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for assembling a segment, which is arranged behind a shield machine in the direction of propulsion and is carried in, into a tunnel shell, for example, a cylindrical structure according to the cross-sectional shape of the tunnel. The present invention also relates to an erector holding device for detachably holding the segment.

[0002]

2. Description of the Related Art A typical conventional example of an erector is disclosed in Japanese Patent Application Laid-Open No. Sho 62-174500. This erector, an erector ring arranged rotatably around a predetermined rotation axis parallel to the propulsion direction of the shield machine,
Two elector arms mounted on the left and right portions (for example, portions opposing each other across the rotation axis) of the erector ring, a pressing jack mounted on each erector arm, and two pressing jacks, the vertical direction of the erector ring. (A radial direction of the electoring ring), and a slider provided on the hanging beam and moving in parallel with the propulsion direction. In this erector, the segment is gripped by a slider, positioning in the propulsion direction by sliding of the slider and positioning in the circumferential direction of the inner peripheral surface of the tunnel by rotation of the erector ring are performed. The tunnel shell is assembled by pressing against the inner peripheral surface.

[0003] Since this erector is a so-called double-supporting type in which a suspension beam is supported by two pressing jacks,
Its overall configuration tends to be relatively large. Therefore, when the slider (gripping portion) is pulled inward in the radial direction of the erector ring, the hollow portion of the erector surrounded by the erector ring, the erector arm, and the suspension beam becomes narrower, and is used for an earth removal device of a shield excavator or a segment assembler. It is not possible to secure sufficient space for the work deck to pass through. In addition, this erector is most suitable for assembling a tunnel shell in a shield tunnel having a circular cross section, but for example, in a multiple shield tunnel having a cross section in which two or more pseudo circular portions are joined in parallel. When two units are arranged and used in parallel, there are many restrictions on construction or equipment design due to problems such as interference between adjacent erectors when rotating the erector ring.

[0004] In order to solve these problems,
As a second conventional example, a so-called cantilever type erector configured to support a grip portion with one erector arm is disclosed in, for example, Japanese Patent Application Laid-Open No. 9-235999. Although the cantilever type can be used to reduce the size of the gripper, the direction of movement of the gripper is different from the radial direction of the electoring ring, so the gripper can be swingably supported in a plane perpendicular to the propulsion direction. Therefore, it is necessary to perform fine position adjustment. For example, the erector disclosed in the above publication includes an erector ring, an erector arm supported by the erector ring, a pressing beam supported on the erector arm so as to be movable in a substantially tangential direction of the erector ring, and an erector mounted on the erector ring. A swing arm slidably supported in a plane perpendicular to the axial direction of the ring, and a slider (gripping portion) supported by the swing arm movably in the axial direction and detachably holding the segment. And Accordingly, in this erector, the rotation of the erector ring, the movement of the pressing beam, and the rocking of the rocking arm are combined to perform the positioning of the grip portion and the pressing of the segments in a plane perpendicular to the axial direction. I have.

[0005]

As described above, in the cantilever type erector, it is necessary to swing the gripping portion. However, in consideration of the operability at the time of swinging and interference with surrounding structures, etc. The grip is desirably small. However, in the above-mentioned publication which discloses the second conventional example, the slider as the grip portion is guided by a pair of slider guides provided on the swing arm, and is moved by a hydraulic jack mounted on the swing arm. It is configured. Therefore, the number of components is large, the length in the moving direction is long, and the overall configuration is considerably large.

In addition, since the positioning of the gripping portion and the like are performed by combining the three types of operations, ie, rotation of the electoring ring, movement of the pressing beam, and swinging of the swing arm, the control is complicated. In addition, the assembling work is troublesome and the working time is long. In particular, when the cross-sectional shape is rectangular, the control becomes more complicated than when the cross-sectional shape is circular, and work and time are required for the work.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional drawbacks, and an object of the present invention is to provide a gripping device for an erector, which can have a compact structure and can easily assemble a tunnel shell. An object of the present invention is to provide an erector using the same.

[0008]

Means and Effects for Solving the Problems Claim 1
Is a tunnel covering the tunnel inner peripheral surface by arranging a plurality of segments 13 side by side along the circumferential direction of the tunnel inner peripheral surface, which is disposed on the rear side in the propulsion direction 42 of the shield machine 41. In the gripping device 1 used for the erector 40 for assembling a shell and gripping the segment 13, the gripper 6 for detachably holding the segment 13, and the gripper 6 parallel to the propulsion direction 42.
And a driving source for supplying a driving force to the propulsion direction moving means 7. The propulsion direction moving means 7 includes a pair of double-acting hydraulic cylinders 12, 12 of a double-sided rod type. And the pair of hydraulic cylinders 1
The piston rods 18, 18 are arranged and fixed in parallel with each other and in parallel with the propulsion direction 42, and the gripping portions 6 are moved as the cylinders 19, 19 move.
Is moved.

According to the gripping device for an erector of the present invention, a pair of piston rods 1 arranged in parallel with each other.
Since the guides 8 and 18 also function as guide members, there is no need to provide a guide member separately from the moving means as in the related art, and the configuration can be reduced in size.

The gripping device for an erector according to claim 2 is driven by a driving force from the driving source, and is disposed in a direction orthogonal to the propulsion direction 42 and in the direction 23 in which the segments 13 are juxtaposed. The moving means 4 is provided with a pair of double-acting hydraulic cylinders 25, 25 of a double-sided rod type, and the piston rods 26, 26 of the pair of hydraulic cylinders 25, 25 are provided. Are fixed in parallel with each other and in a crosswise direction in a direction perpendicular to the piston rod 18 of the hydraulic cylinder 12 of the propulsion direction moving means 7. The gripper 6 is further moved in parallel with a holder 8 for holding the segment 13 and a pressing direction 24 orthogonal to both the propulsion direction 42 and the juxtaposition direction 23. And a movement means 9 pressing is moving, and the moving means 9 characterized in that disposed in the parallel crosses.

According to the gripping device for an elector according to the second aspect, the gripping portion 6 can be moved in a direction orthogonal to the propulsion direction 42 and in the direction 23 in which the segments 13 are arranged. Positioning control is facilitated, and the tunnel shell can be easily assembled.

Further, since a pair of double-acting hydraulic cylinders 25, 25 of a double-sided rod type are used as the moving means 4 for moving the gripping portions 6 in the juxtaposed direction, a separate guide member is not required and a new guide member is required. It is possible to suppress an increase in the size of the configuration due to the addition of the simple moving means 4. Further, since the piston rods 26, 18 of the two moving means 4, 7 are orthogonal to each other and arranged in a cross-girder shape, so to speak, the two moving means 4, 7 are arranged in an overlapping manner. The gripping device can be configured such that the lengths of the propulsion direction 42 and the juxtaposition direction 23 orthogonal thereto are approximately equal to the lengths of the respective piston rods 18 and 26, whereby the size of the configuration can be reduced.

Further, moving means 9 for moving the holder 8
Is arranged in the above-mentioned crossbeam, that is, in the space surrounded by the four piston rods 18, 18, 26, 26, the length of the pressing direction 24 in the gripping device is shortened, and the configuration is downsized. Can be achieved.

The erector of claim 3 further comprises a turning ring 44 rotatably arranged around a predetermined rotation axis 43 parallel to the propulsion direction 42 of the shield machine 41, and a predetermined position of the turning ring 44. An elevating arm (46) supported to be movable in a substantially tangential direction of the swivel ring (44), and the elevating arm (46) is swingably supported on a plane perpendicular to the rotation axis (43) of the swivel ring (44). Item 2
And the gripping device 1 for an erector.

According to the third aspect of the present invention, the configuration of the erector itself can be reduced in size by using the gripping device 1 in which the configuration described above is downsized.
In addition, the operability when swinging the gripping device 1 is improved, and the occurrence of interference with surrounding structures when the gripping device 1 rotates, moves, and swings can be suppressed.

Further, by using the gripping device 1 of the present invention, the positioning of the gripping portion 6 when the segment 13 is pressed against the inner peripheral surface of the tunnel can be performed by the rotation of the swivel ring 44, the movement by the lifting / lowering arm 46, and the gripping device 1 itself. Three swinging motions and a juxtaposition direction 23 orthogonal to the propulsion direction 42
, The control can be easily performed, the assembling of the tunnel shell can be facilitated, and the working time can be reduced.

[0017]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a gripping device for an erector according to the present invention and an erector using the same. First, Figure 1
An embodiment of the gripping device for an erector will be described with reference to FIG. FIG. 1 is a front view of a gripping device for an erector (hereinafter, simply referred to as a “gripping device”) 1 according to an embodiment of the present invention, and FIG. 2 is a side view as viewed from a direction of an arrow A in FIG. . FIG. 3 is a cross-sectional view taken along line BB of FIG. 1, FIG. 4 is a cross-sectional view taken along line CC of FIG. 1, and FIG. It is sectional drawing seen from the surface line DD. Further, FIG. 6 is a cross-sectional view taken along the line EE of FIG. 5, and FIG. 7 is a cross-sectional view taken along the line FF of FIG.

The gripping device 1 has a main body 2 which is a box-shaped structure with one side open, a sliding portion 3 a part of which is housed in the main body 2, and a gripping device 1 which is mounted in the main body 2. Sliding part 3
Is a direction orthogonal to the propulsion direction (perpendicular to the plane of FIG. 1) 42 of the shield machine 41 and
And a sliding portion moving means (parallel direction moving means) 4 for moving in the side-by-side direction (left-right direction on the paper surface of FIG. 1). Further, the sliding portion 3 is substantially a sliding body 5 which is a substantially box-shaped structure having one side opened, a grip portion 6 for detachably holding the segment 13, and a sliding portion 3 mounted in the sliding body 5. And a gripper moving means (propulsion direction moving means) 7 for moving the gripper 6 in parallel with the propulsion direction 42.

First, the sliding portion 3 will be described. The sliding body 5 has a two-stage structure in which two large and small boxes 5a and 5b each having an open side are connected, and the opening of the small box 5b is formed substantially at the center of the bottom plate of the large box 5a. Communicating with the through hole. In addition, the gripper 6 includes a pair of holders 8, 8 for holding the segment, a shake stopper jack (pressing direction moving means) 9 for moving the holders 8, 8, and a shake stopper jack 9.
The support member 10 (see FIG. 6) to which is mounted, and a pair of segment vibration stoppers 11, 11. Further, the gripper moving means 7 includes a pair of double-acting hydraulic cylinders 12, 12 of a double-sided rod type (see FIG. 3).

As shown in FIG. 7, each of the holders 8 and 8 is a plate having a pin hole 8a at the center thereof.
8a are arranged in parallel at a predetermined interval so as to coincide along the propulsion direction 42, and one end thereof is attached to one end of the cylinder 9a of the anti-vibration jack 9. On the other hand, a hanger 14 is provided at a predetermined position of the segment 13, and a pin hole 14 a is formed in the hanger 14. When the segment 13 is gripped by the holders 8, 8, the hanger 14 is inserted between the holders 8, 8, and the pin holes 8 a, 8 a of the holders 8, 8 and the pin holes 14 a of the hanger 14 are connected. In this state, both pin holes 8a,
The segment 13 is gripped by the gripper 6 by inserting the pin 15 through 14a. In the direction perpendicular to both the propulsion direction 42 and the juxtaposition direction 23, ie, the direction in which the segment 13 is pressed against the inner circumferential surface of the tunnel,
Is moved before and after (up and down in the paper) . Therefore, the holder 8 is pushed backward in the pressing direction 24 (upward in the paper surface).
By moving the segment 13 to the segment resting member 11, the segment 13 is prevented from swinging. The pressing of the segment 13 may be performed using the anti-vibration jack 9 or may be performed by moving the entire gripping device 1 by a configuration described later.

The anti-vibration jack 9 is, as shown in FIG.
For example, the piston rod 9b is realized by a double-acting hydraulic cylinder of a one-side rod type.
By fixing the cylinder 9a, the cylinder 9a is movably arranged. The supporting member 10 is a small box 5b of the sliding body 5.
A connecting member 16 connected to a pipe 17 for supplying hydraulic oil supplied from a hydraulic pump as a driving source is attached to the outside of the bottom 10a. Connecting member 16
Are passed through the through holes formed in the bottom plate of the small box 5b and the through holes formed in the bottom plate of the main body 2. Hydraulic oil from the pipe 17 is supplied to the anti-vibration jack 9 .

On the other hand, a pair of hydraulic cylinders 12 constituting the gripper moving means 7 are provided with piston rods 18, 1 respectively.
8 are arranged in the large box 5 a of the sliding body 5 in parallel with each other and in parallel with the propulsion direction 42. Piston rod 18
Are fixed to the inner surfaces of a pair of side plates facing each other of the large box 5a, respectively.
8. The outer peripheral shape of the cross section of the cylinder 19 is rectangular, and between the opposing side surfaces,
Bearing 22 on which cylinder 9a of anti-vibration jack 9 is supported
Is interposed. A mounting member 20 is attached to the side surface of the cylinder 19 facing the bottom plate of the sliding main body 5,
The attachment piece 10b of the support member 10 is fixed to the attachment member 20 with bolts. Further, a mounting member 21 is attached to a side surface of the cylinder 19 facing the opening of the sliding main body 5, and the segment vibration stopper 11 is attached to the mounting member 21.

As described above, the holder 8, the vibration-reducing jack 9, the support member 10, the connecting member 16, and the pipe 17 are integrally connected to each other. Move with. The segment stoppers 11 are also moved by the gripper moving means 7. Therefore, the gripper 6 is moved back and forth along the propulsion direction 42 by the gripper moving means 7.

Next, a mechanism for moving the sliding portion 3 itself will be described. The sliding portion moving means 4 includes a pair of double-acting hydraulic cylinders 25 of a double-sided rod type. The pair of hydraulic cylinders 25, 25 are such that the piston rods 26, 26 are parallel to each other and the hydraulic cylinder 1
2 in a direction orthogonal to the piston rod 18 (that is,
(Direction orthogonal to the propulsion direction 42).
Are arranged in the main body 2 so as to form a cross-girder.
Both ends of the piston rod 26 are fixed to the inner surfaces of a pair of opposed side plates of the main body 2, respectively, so that the cylinder 27 moves along the piston rod 26.

As shown in FIG. 7, the outer peripheral shape of the cross section of the cylinder 27 is rectangular, and the small box 5b of the sliding body 5 is interposed between the opposing side surfaces of the pair of cylinders 27, 27. Thus, the side surface of the cylinder 27 and the outer surface of the side plate of the small box 5b are connected by a connecting member 28. Further, the side surface of the cylinder 27 facing the opening of the main body 2 and the outer surface of the bottom plate of the large box body 5 a are connected by a connection member 29. Therefore, by operating the hydraulic cylinder 25 to move the cylinder 27, the sliding portion 3 moves in the juxtaposed direction 23 orthogonal to the propulsion direction 42.

Since the small box 5b of the sliding body 5 is interposed between the pair of hydraulic cylinders 25, 25, the tip end of the piston rod 9b of the anti-vibration jack 9 arranged inside the small cylinder 5b Between the piston rods 26, 26, and the tip end of the cylinder 9a of the anti-vibration jack 9 is a pair of hydraulic cylinders 12,
It will be interposed between the twelve piston rods 18. As a result, the anti-vibration jack 9 is
It is arranged in a cross-girder structure composed of 2, 12, 25, 25.

On the outer surfaces of a pair of side plates of the main body 2 located in a direction perpendicular to the propulsion direction 42, bearing portions 30, 30 for supporting a shaft portion 54 of a swing support portion 47 described later are formed. On the outer surface of one side plate of the main body 2 located parallel to the propulsion direction 42, mounting members 31, 31 to which the tip of the bent jack 55 of the swing support portion 47 is mounted are formed.

As described above, according to the gripping device 1 according to one embodiment of the present invention, a pair of double-acting hydraulic cylinders 12 of a double-sided rod type are used to move the gripper 6 in parallel with the propulsion direction 42. Since the piston 12 is used, the pair of piston rods 18 arranged in parallel with each other also functions as a guide member, and it is not necessary to provide a guide member separately from the moving means as in the related art. Thereby, downsizing of the gripping device 1 can be achieved.

Further, since the grip 6 can be moved in the juxtaposition direction 23 orthogonal to the propulsion direction 42, the positioning of the grip 6 can be easily controlled, and the tunnel shell can be easily assembled. .

Further, as the sliding portion moving means 4 for moving the grip portion 6, ie, the sliding portion 3 in the juxtaposed direction 23 orthogonal to the propulsion direction 42, a pair of double-acting hydraulic cylinders 25, 25 of a double-sided rod type. As described above, a separate guide member is not required similarly to the above, and it is possible to suppress an increase in the size of the configuration due to the addition of a new moving unit. Further, since the piston rods 18 of the hydraulic cylinders 12 and 12 and the piston rods 26 of the hydraulic cylinders 25 and 25 are arranged orthogonally to each other in a grid pattern, so to speak, the two moving means 4 and 7 are overlapped. As a result, the respective lengths of the propulsion direction 42 and the juxtaposition direction 23 orthogonal thereto can be approximately equal to the length of each of the piston rods 18 and 26, so that the configuration can be downsized. .

Further, by arranging the anti-vibration jack 9 for moving the holding tool 8 in a cross-girder structure formed of four hydraulic cylinders 12, 12, 25, 25, The length occupied by the vibration-reducing jack 9 in the moving direction can be shortened, and the size of the configuration can be reduced.

Next, as another embodiment of the present invention, an erector 40 using the above-described gripping device 1 will be described.
The erector 40 is, as shown in FIG.
A swivel ring 44 rotatably arranged around a predetermined rotation axis 43 parallel to the thrust direction 42.
, An elevator arm 45 supported by the erector arm 45 so as to be movable in a substantially tangential direction of the swivel ring 44, and a swing support portion 47 mounted on the tip of the elevator arm 46. And the gripping device 1 swingably supported by the swing support portion 47.

The turning ring 44 is guided by a plurality of guide rollers (not shown) arranged along the inner periphery of the shield body 48, and is rotated by driving a turning motor (not shown). The erector arm 45 is provided at one of two portions facing each other across the rotation axis 43 on the swivel ring 44 so as to protrude rearward in the propulsion direction 42. A weight is attached to the other of the two parts so that the balance can be maintained when the swivel ring 44 rotates.

As shown in FIG. 9, the lifting arm 46 comprises a lifting member 49 and two guide rods 50, 50 attached to the lifting member 49.
50 is slidably supported by the erector arm 45. Thus, the elevating member 49 is connected to the guide rod 5.
Guided by 0, 50 and detented.
The cylinder side of the lifting jack 51 is attached to the elector arm 45, and the rod side is attached to the lifting member 49. The lifting member 49 is slid substantially tangentially with respect to the circumference of the swivel ring 44 by the lifting jack 51.

As shown in FIG. 10, the swing support portion 47
A main body 52 having a flat plate shape is provided, and a pair of support plates 5 opposed to each other is provided near one longitudinal end of one surface of the main body 52.
3, 53 are formed to extend in a direction perpendicular to the one surface. The supporting plates 53 are provided with the gripping device 1.
The shaft portions 54, 54 to which the bearing portions 30, 30 are fitted are provided so as to protrude in directions facing each other. At one end surface in the width direction of the main body 52 and substantially at the center in the longitudinal direction, a pair of mounting members 57 for supporting the bent jack 55 so as to be rotatable around the rotation shaft 56 is provided with a support plate. 53 is formed to extend in a direction opposite to the extending direction. The cylinder side of the bent jack 55 is pivotally supported by the mounting members 57, 57, and the mounting members 31, 31 of the gripper 1 are attached to the tip of the rod.
Is formed.

As shown in FIG. 11, the swing support portion 47
The other surface of the main body 52 (the surface on which the support plate 53 is not formed) is attached to the elevating member 49, so that the main body 52 is mounted on the elevating arm 46. The shaft 54 of the support plate 53 is fitted to the bearing 30 of the gripping device 1, and the pivot shaft 58 at the tip of the rod 55 b of the bent jack 55 is fitted to the mounting member 31 of the gripping device 1. Rod 55 of bent jack 55
By expanding and contracting b, the gripping device 1 swings around the shaft portion 54.

As described above, according to the erector 40 according to another embodiment of the present invention, the configuration of the erector 40 itself can be reduced in size by using the gripping device 1 having a reduced configuration. . In addition, the operability when swinging the gripping device 1 is improved, and rotation /
It is possible to suppress the occurrence of interference with surrounding structures when the lifting / lowering arm 46 swings by the movement / swinging support portion 47.

When the segment 13 is pressed toward the inner peripheral surface of the tunnel, the positioning of the gripping portion 6 is determined by the three movements of rotation, movement, and rocking described above, and the juxtaposition direction 23 orthogonal to the propulsion direction 42. Control can be easily performed by combining the four movements,
The assembling of the tunnel shell is facilitated, and the working time can be reduced.

Further, the erector 40 is not limited to a tunnel shell having a circular cross section as shown in FIG.
It can also be used for assembling a tunnel shell having a rectangular cross section as shown in FIG. Also, a tunnel shell having a cross-sectional shape in which pseudo circular portions are joined in parallel as shown in FIG. 12C or a tunnel shell having a cross-sectional shape in which square portions are joined in parallel as shown in FIG. It can also be used for assembly. In particular, in the present invention, the operability at the time of swinging of the gripping device 1 is improved, and the gripper 6 holding the segment 13 is improved.
Can be moved in the juxtaposition direction 23 orthogonal to the propulsion direction 42 of the shield machine 41, which is effective when assembling a tunnel shell having a rectangular cross section as shown in FIGS. 12B and 12D.

[Brief description of the drawings]

FIG. 1 is a front view of a gripping device according to an embodiment of the present invention.

FIG. 2 is a side view as seen from the direction of arrow A in FIG.

FIG. 3 is a sectional view taken along line BB of FIG. 1;

FIG. 4 is a cross-sectional view taken along the line CC of FIG. 1;

FIG. 5 is a cross-sectional view taken along the section line DD of FIG. 1;

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

FIG. 7 is a cross-sectional view taken along the line FF of FIG. 5;

FIG. 8 is a side view of an erector according to another embodiment of the present invention.

FIG. 9 is a side view of a lifting arm constituting the erector.

FIG. 10 is a side view of a swing support portion constituting the erector.

FIG. 11 is a front view for explaining the operation of the swing support portion.

FIG. 12 is a sectional view showing a shape of a tunnel shell.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Grasping device 2 Main body 3 Sliding part 4 Sliding part moving means 5 Sliding main body 6 Gripping part 7 Grasping part moving means 8 Holder 9 Skew jack 11 Segment damper 12 Hydraulic cylinder 13 Segment 18 Piston rod 19 Cylinder 23 Side-by-side direction 24 Pressing direction 25 Hydraulic cylinder 26 Piston rod 27 Cylinder 40 Elector 41 Shield excavator 42 Propulsion direction 43 Rotation axis 44 Swivel ring 45 Elector arm 46 Lifting arm 47 Swing support

──────────────────────────────────────────────────続 き Continued on the front page (72) Katsuji Ikezoe 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Kashima Construction Co., Ltd. (72) Hideo Kambayashi 3-1-1 Ueno, Hirakata-shi, Osaka (72) Inventor Masayuki Konishi 3-1-1, Ueno, Hirakata-shi, Osaka Prefecture Incorporated Komatsu Ltd., Osaka Factory (72) Naoki Sekiyama 3-1-1, Ueno, Hirakata-shi, Osaka Komatsu Ltd. Osaka Plant (72) Inventor Masahiro Hattori 3-1-1-1 Ueno, Hirakata City, Osaka Komatsu Ltd. Osaka Plant (56) References JP-A-9-235999 (JP, A) JP 62-174500 (JP, A) JP-A-5-59899 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) E21D 11/40

Claims (3)

(57) [Claims] The propulsion direction (4) of a shield machine (41)
A plurality of segments (13) arranged behind the 2)
Are used in an erector (40) for assembling a tunnel shell that covers the inner circumferential surface of the tunnel by arranging the segments in parallel along the circumferential direction of the inner circumferential surface of the tunnel. Segment (13)
(6) for detachably holding the gripper, propulsion direction moving means (7) for moving the gripper (6) in parallel with the propulsion direction (42), and driving by the propulsion direction movement means (7) And a driving source for supplying a force. The propulsion direction moving means (7) includes a pair of double-acting hydraulic cylinders (12) (12) of a double-sided rod type, and the pair of hydraulic cylinders (12) (12). ) Each piston rod (18) (18)
Are arranged so as to be parallel to each other and parallel to the propulsion direction (42), and the gripping portion (6) is moved with the movement of each cylinder (19) (19). Elector gripping device. 2. The grip portion (6) is driven by a driving force from the driving source and is orthogonal to the propulsion direction (42) and in the direction (23) in which the segments (13) are arranged side by side.
The moving means (4) includes a pair of double-acting hydraulic cylinders (25) (25) of a double-sided rod type, and the pair of hydraulic cylinders (25). (25) Each piston rod (26) (2
6) parallel to each other and the propulsion direction moving means (7)
The hydraulic cylinder (12) is arranged and fixed in a cross-shaped manner in a direction orthogonal to the piston rod (18) of the hydraulic cylinder (12), and the gripping part (6) is moved with the movement of each cylinder (27) (27). Further, the gripper (6) is connected to the segment (1).
3) a holding tool (8) for holding, and pressing direction moving means for moving the holding tool (8) in parallel with a pressing direction (24) orthogonal to both the propulsion direction (42) and the juxtaposition direction (23). The gripping device for an erector according to claim 1, wherein (9) is provided, and the moving means (9) is arranged in the crossbeam. 3. The propulsion direction (4) of the shield machine (41).
A turning ring (44) rotatably arranged around a predetermined rotation axis (43) parallel to 2), and the turning ring (4);
An elevating arm (46) supported at a predetermined position of (4) so as to be movable in a substantially tangential direction of the swivel ring (44), and the elevating arm (46) is provided with a rotation axis (43) of the swivel ring (44). An erector, comprising: the gripper (1) for an erector according to claim 1 or 2, which is supported so as to be swingable in a plane perpendicular to the erector.