JPH0826758B2 - Electa device in 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 provided in a shield machine capable of continuously excavating a tunnel having a cross section other than a circular shape.

[0002]

27 and 28 show an example of a conventional shield machine for excavating a circular tunnel.

This shield machine has a skin plate 10 having a circular cross section, and a cutting plate 14 having a cutter bit 12 on the front surface is rotatably supported at a front end portion of the skin plate 10 via a bearing 16. There is. A ring gear 18 is fixed to the rear end of the cutting plate 14, and a motor 20 is fixed to the skin plate 10 side. The pinion gear 22 fixed to the drive shaft of the motor 20 is meshed with the ring gear 18. The cutting plate 14 is rotationally driven integrally with the ring gear 18 by the operation of the motor 20. The erector device 28 is arranged behind these, and the segment 30 is assembled by the erector device 28. The segment jack 3 is provided just in front of the erector device 28.
2 is provided, and when the rod 33 extends, the shield machine moves forward by taking a reaction force from the segment 30, that is, moves to the left in FIG. 27. By simultaneously moving the shield machine forward and rotating the cutting plate 14, the circular tunnels are continuously excavated.

Reference numeral 26 in the drawing denotes a screw conveyor for conveying the earth and sand which has entered the chamber 24 through the opening 13 (FIG. 28) of the cutting plate 14 at the time of the excavation.

The structure of the above-mentioned elector device 28 is shown in FIGS.
0 is shown. The device 28 includes a motor 36 fixed to the skin plate 10 side, and a ring 38 rotationally driven by the motor 36, more specifically, a ring 38 rotationally driven about an axis parallel to the propulsion direction of the shield machine. Ring 3
The outer peripheral portion of 8 is supported by a number of guide rollers 40 arranged on the inner peripheral surface of skin plate 10.
By disposing the screw conveyor 26 in the central space of the ring 38, interference between the two is prevented.

A segment holding portion 44 is provided at a predetermined position of the ring 38 via a parallel link mechanism 42. The segment holding portion 44 is configured to detachably hold the segment 30. The segment holding portion 44 holds the segment 30 and operates the parallel link mechanism 42 to operate the parallel link mechanism 42. Can be moved to the outside in the radial direction of rotation of the ring 38, and this movement causes each segment 3
It is possible to set 0 at a predetermined position.

[0007]

Conventionally, the excavation shape of a tunnel by a shield machine has been limited to a circle, but in recent years, excavation cross sections other than a circle have been required in sewers, power lines, subway tunnels, etc. Development of a free-section shield machine for excavating a tunnel having such a cross-sectional shape is in progress.

For example, in Japanese Unexamined Patent Publication No. 1-256697, in addition to excavating a central circular portion on the front surface in the propulsion direction with the cutting plate 14 shown in FIG. 27, a guide having a shape corresponding to a desired excavation shape is provided. With a frame,
By revolving a planetary cutter (side cutter) along the guide frame, the outer peripheral portion of the central circular portion is excavated by the planetary cutter to obtain an excavated cross section of a desired shape as a whole. There is.

In the excavation by such a shield machine, it is necessary to assemble the segment 30 into a shape other than a circle as a whole, that is, a shape that substantially matches the excavation cross-sectional shape. Here, when the conventional elector device 28 as described above is used, by appropriately changing the stroke amount of the segment holding portion 44 by the parallel link mechanism 42 according to the rotational angular position of the ring 38, a shape slightly deformed from a circle is obtained. The segment 30 can be assembled. However, since the excavation shape is not circular, the following inconvenience occurs.

FIG. 26 (a) shows how to assemble a segment on an inner peripheral surface G of an elliptical skin plate as an example of a shape other than a circle. In FIG. 26 (a), the segment holding portion 44 and the segment 30 are If it is at a position right next to the point P, the operating direction of the segment holding portion 44 (that is, the radial direction of the ring 38; the arrow AP).
Since the normal direction of the inner peripheral surface G of the skin plate coincides with the normal direction of the skin plate G, the segment 30 can be smoothly assembled even if the segment holding portion 44 is moved and the segment 30 is conveyed to the outside in the radial direction. , The segment holding portion 44 at a position deviating from the point P, for example, a position of the point Q.
If there is, the shape of the inner peripheral surface G of the skin plate is not a circle, and therefore the moving direction of the segment holding portion 44 (direction of arrow AQ) and the normal direction of the inner peripheral surface G of the skin plate (indicated by the two-dot chain line NL). However, even if the segment holder 44 is moved as it is, the segment 30 cannot be smoothly incorporated into the desired assembly position.

In view of the above circumstances, the present invention provides an erector device in a shield machine, which can smoothly assemble the segments in accordance with the excavation of a tunnel having a cross-sectional shape other than a circle. To aim.

[0012]

DISCLOSURE OF THE INVENTION The present invention is an erector device provided in a shield machine for assembling segments along an excavation cross-sectional shape other than a circle, which is substantially parallel to the propulsion direction in the shield machine. A rotary body rotatably supported around a direction axis, a rotary body drive means for rotationally driving the rotary body, a movable body, and a fixed body at an end of the rotary body, the movable body being fixed to the rotary body. A guide member that guides and supports a linear movement in a rotational tangential direction, a moving body driving unit that linearly moves the moving body in the guiding direction of the guide member, and a segment that is connected to the moving body and holds a segment And segment holding means for moving the rotating body in the substantially radial direction of rotation of the rotating body.

[0013]

According to the above apparatus, even if the radial direction of the rotary body at the position corresponding to the desired segment assembly position does not match the normal direction of the segment assembly surface corresponding to the above position, the moving body drive means can be driven. By merely moving the moving body and the segment holding means integrally in the guide direction of the guide member (rotational tangential direction of the rotating body) by operation, the segment holding means can convey the segment and the normal direction of the segment assembly surface. Can be matched.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described with reference to FIGS.

FIG. 1 and FIG. 2 show the entire structure of the erector device in one embodiment of the present invention. In addition,
The overall structure of the shield machine provided with this erector device is such that the cutter on the front surface has a shape other than a circle (here an elliptical shape).
2 except that it has an excavated cross section and that the skin plate 10 also has an oval cross section.
Since it is almost the same as the shield machine shown in 7, 28,
The same components as those shown in the figure are designated by the same reference numerals, and the description thereof will be omitted.

The erector device shown here has a segment 3
A segment holding device 46 for holding 0 is provided, and the segment holding device 46 is connected to an elector ring (rotating body) 48. The erector ring 48 is rotatably supported by an erector ring support (rotor support) 50 about an axis in a direction parallel to the propelling direction of the shield machine (left and right direction in FIG. 2). The support body 50 is an elevating support body 5 fixed to the skin plate 10.
It is supported by 2 so that it can be moved up and down.

The structure of the lifting support 52 is shown in FIGS.
Shown in

The elevating support 52 is provided with a pair of left and right fixed frames 54 extending in the vertical direction.
The upper and lower ends of 4 are skin plates 1 via brackets 56
It is fixed to the inner surface of 0 (see FIG. 1). A bracket 58 is fixed to the inner surface of the lower portion of each fixed frame 54,
A lower end portion of a lifting hydraulic cylinder (electa ring support driving means) 60 is connected to the upper surfaces of both brackets 58. A sprocket 66 is rotatably mounted on the upper ends of the two lifting hydraulic cylinders 60, that is, on the outside of the rod end 62, and a connecting bracket 64 is fixed on the inner side. They are connected at 68. This connecting member 68 avoids interference with the screw conveyor 26 at the center of the shield machine when each lifting hydraulic cylinder 60 is in the most contracted state, that is, in the state where the rod end 62 is most lowered as shown in FIG. The central portion has a shape that bulges upward.

The inner surfaces of both fixed frames 54 are shown in FIGS.
A guide rail 70 extending vertically as shown in FIG.
Are fixed, and the lifting / lowering body 72 is driven up and down along the guide rail 70. As shown in FIG. 3, the elevating body 72 is provided at symmetrical positions, and the erectoring support body 50 is fixed to the elevating body 72.

As shown in FIGS. 6 to 7, each guide rail 70 has a U-shaped cross section, and a flat sliding surface forming plate 74 is fixed to the inner surface thereof. on the other hand,
The outer surface of each lifting body 72, that is, the guide rail 70.
The main roller 76 is rotatably mounted on the surface facing the shield rotatably about a shaft 75 in the width direction of the shield machine (left and right direction in FIGS. 5 and 6), and via a bracket 78,
The side roller 80 is attached so as to be rotatable about the axis of the shield machine in the propelling direction (vertical direction in FIG. 7).
As shown in FIG.
When the side roller 80 is fitted inside, and the side roller 80 is in contact with the front side surface (sliding surface) of the sliding surface forming plate 74,
2 is guided vertically.

As shown in FIG. 4, one end of a chain 84 is fixed to the back side surface (right side surface in the figure) of each lifting body 72 via a bracket 82, and the middle portion of the chain 84 is the sprocket. The other end in the state of being hung on 66 is fixed to the fixed frame 54 side via a connecting tool 86. That is, here, a structure equivalent to that of a moving pulley is formed, and each lifting / lowering body 72 is doubled in stroke by the expansion / contraction operation of the lifting hydraulic cylinder 60, that is, the lifting / lowering operation of the rod end 62 and the sprocket 66. Also, the electoring support body 50 is driven to move up and down.

The structure of the electret ring support 50 is shown in FIGS. Note that in FIG. 9, a rotary drive motor 96, which will be described later, is depicted with a predetermined angle offset from the actual position for convenience.

The body 88 of the electret ring support 50
8 has a large rectangular through hole 87 in the center as shown in FIG.
It has a front shape having. A large number of guide rollers 90 are rotatably mounted on the peripheral edge of the electret ring support body 88.
The erector ring 48 is rotatably held in a state where the peripheral end portion of the erector ring 48 is in contact with.

In the elector ring 48, about 180 ° from the position where the segment holding device 46 described later is connected.
A balance weight 92 is provided at a distant position, and a ring gear 94 is fixed to the back side surface (the right side surface in FIG. 9) of the elector ring 48. On the other hand, the rotation driving motor 96 is mounted on the inner peripheral surface of the electret ring support body 88 at a predetermined position via the bracket 95.
Is fixed, and a pinion gear 98 fixed to its output shaft is meshed with the ring gear 94. Therefore, the operation of the rotation driving motor 96 causes the erector ring 48 to rotate relative to the erector ring support body 50.

Further, a lock device 100 as shown in FIGS. 10 and 11 is provided on the main body 88 of the electoring support 50. This locking device 100
The above-mentioned electoring support body 50 is divided into the upper, middle and lower stages.
It is for fixing to the elevation support body 52 side at the stage position. Specifically, the device 100 includes a lock cylinder 102, and a lock pin 106 fixed to a rod 104 of the lock cylinder 102 is inserted into a horizontal through hole provided in the erector ring support body 88. And
When the lock pin 106 projects from the back surface (the upper side surface in FIG. 11) of the electret ring support body 88 (the state shown by the chain double-dashed line in FIG. 11), the lock pin 1
As shown in FIGS. 1 and 3, 06 is selectively inserted into the upper and lower three-stage lock holes 99 provided in the fixed frame 54, so that the entire electret ring support body 50 is fixed to the lift support body 52 side. It is supposed to be done.

Next, the connecting structure of the above-mentioned elector ring 48 and the above segment holding device 46 will be described with reference to FIGS.

At a predetermined position of the above-mentioned elector ring 48,
The movable body 112 is supported so as to be slidable in the rotational tangential direction (left and right direction in FIG. 14).
The segment holding device 46 is installed in the.
The segment holding device 46 includes a driving mechanism 114 connected to the moving body 112 and a holding device body 116.

As shown in FIG. 13, the moving body 11 is
The outer block 11 includes an outer block 118, an inner block 120, and a connecting plate 122.
8 and the inner block 120 form a pair of upper and lower guided grooves 124 extending in the tangential direction. On the other hand, a mounting plate 126 and a pair of upper and lower guide rails 1 fixed to the mounting plate 126 and extending in the tangential direction are provided on the front side surface (right side surface in FIG. 13) of the elector ring 48.
28 is fixed, and the guide rail 128 of the guide member 130 is fitted into the guided groove 124, so that the movable body 112 is slidably supported on the erector ring 48 side. It is in a state of

Further, a slide drive cylinder 132 for sliding the moving body 112 penetrates through the central portion of the inner block 120 of the moving body 112. The end portion of the rod 134 of the slide driving cylinder 132 is connected to a bracket 138 fixed to the erector ring 48 side via a pin 136, and the base end portion of the cylinder 132 is shown in FIGS. Is also connected to the connecting plate 122 of the moving body 112 by a structure as shown in FIG.

Specifically, a pair of upper and lower fixing plates 140 extending in the horizontal direction are fixed to the back side surface (left side surface in FIGS. 15 and 16 (b)) of the connecting plate 122, and the pin 1 is attached to the end thereof.
The support plate 144 is fixed by 42. On the other hand, a bracket 146 as shown in FIG. 16B is fixed to the base end side of the slide driving cylinder 132, and the pins 148 protruding from the upper and lower surfaces of the bracket 146 are the above-mentioned. The slide drive cylinder 1 is fitted into a through hole provided in the support plate 144.
The base end of 32 is fixed to the connecting plate 122 side. Therefore, the rod 134 of the slide driving cylinder 132 is
As the mobile body 112 expands and contracts, the moving body 112 moves toward the guide rail 1.
It will be slid along 28.

Drive mechanism 1 for the segment holding device 46
14 includes six parallel links 150, which are three rows on the left and right (three rows on the upper and lower sides in FIG. 12) and two rows on the upper and lower sides. It is operably connected to the connecting plate 122 of the moving body 112, and the other end of each link 150 has a pin 15 in the horizontal direction.
4 is rotatably connected to the holding device main body 116. That is, each of the links 150 corresponds to the moving body 1
A parallel movement mechanism that supports the holding device main body 116 so as to be vertically movable with respect to the holding device main body 116 is configured.

Further, a base end portion of a link driving cylinder 158 is rotatably connected to the back surfaces of the left and right links 150 via a horizontal pin 156, and the rod of the link driving cylinder 158 is connected. 160 is connected to the connecting plate 122 of the moving body 112 via a horizontal pin 162. Therefore, when the rod 160 of the driving cylinder 158 expands and contracts, the links 150 rotate while keeping their relative positions constant, and the holding device main body 116 moves up and down while maintaining the horizontal state. (See the solid line and the chain double-dashed line in FIG. 13).

The structure of the holding device body 116 is shown in FIGS.
It shows in FIG.

The holding device main body 116 is provided with a housing 164 that opens downward, and a pair of left and right support shafts 166 as shown in FIG. 19 are fixed in the housing 164 in a horizontal state. Thus, the holding member 168 is supported slidably along the support shafts 166 (movable in the front-rear direction).

A holding member driving cylinder 170 is fixed to the central portion of the holding member 168 so as to penetrate therethrough. The direction of the cylinder 170 is set so that the tip of the rod 172 projects to the outside of the housing 164 and faces the side where the moving body 112 is located (left side in FIGS. 19 and 20). On the other hand, a rod support portion 176 extends from the housing 164 to a position corresponding to the tip of the rod 172, and a pair of left and right connecting plates 178 provided on the rod support portion 176 connects the rod 172 with the rod 172. The ends are connected via pins 174. Therefore, due to the expansion and contraction of the rod 172, the holding member 168 is integrated with the main body of the holding member driving cylinder 170.
Slides in the front-back direction (the left-right direction in FIGS. 19 and 20) (see the chain double-dashed line in FIG. 20).

As shown in FIG. 20, the lower end of the holding member 168 has a U-shaped cross section having a space 180 that opens downward, and a through hole 182 is provided in the front-rear direction. ing. Brackets 18 on both sides
4 is fixed, and the base end of the pressing arm 188 is rotatably attached to the lower end of the bracket 184 via a pin 186. Further, the bracket 192 and the pin 19 are provided on both left and right wings of the holding member 168.
A vertical arm drive cylinder 196 is attached rotatably via the pin 4, and the lower end of the rod 198 of the cylinder 196 is connected to the rotary end of the pressing arm 188 via a pin 200. There is. Further, a downward arcuate pressing member 190 is provided at the rotating end of the pressing arm 188.

In such a structure, the holding member 1
As shown in FIG. 20, the lifting jig 202 fixed to the upper surface of the segment 30 is inserted into the lower end space 180 of the 68, and the through hole 204 provided in the lifting jig 202 is inserted.
And the through hole 182 on the holding member 168 side are aligned with each other and the pin 206 is inserted into both of them, so that the holding member 16
8, the segment 30 can be suspended, and from this state, the arm driving cylinder 196
The rod 2 of the pressing arm 188 and the pressing member 190 at the rotating end of the pressing arm 188 is pressed against the upper surface of the segment 30 (two-dot chain line in FIG. 18).
It is possible to prevent the segment 30 around 06 from swinging. Next, segment 3 using this erector device
The assembling procedure of 0 will be described. Here, as an example, FIG.
1 and the pair of lower segments 301 shown in FIG. 1, the pair of left and right side segments 302 shown in FIG.
A pair of left and right upper segments 303, and finally FIG.
The process of assembling the key segment 304 shown in FIG. 5 will be described. However, in the present invention, the specific shape and number of segments to be assembled may be set as appropriate regardless of the specific shape or number of the segments.

(1) Assembly of the lower segment 301 (see FIG. 2)
1 (a) (b)) First, the rod of the lifting hydraulic cylinder 60 is contracted to move the erector ring 48 and the elector ring support body 50 together with the elevating body 72 to the lowermost position, and at this position, the locking device 100 is moved. By extending the rod 104 of the lock cylinder 102 and engaging the lock pin 106 with the lock hole 99 on the fixed frame 54 side, the erector ring 48 and its support 50 are fixed at the above position. Further, the rotation driving motor 96 is operated to rotate the elector ring 48 with respect to the support 50 thereof, and the segment gripping device 46 is set to the lowest position as shown in FIGS. 1 and 21 (a). At the same time, the movable body 112 and the segment holding device 46 are set at the center position of the guide rail 128 by sliding the movable body 112 by the operation of the slide driving cylinder 132.
By this adjustment, the radial direction of the elector ring 48 and the operating direction of the segment holding device 46 (that is, the moving direction of the holding device main body 116) match.

Next, the segment gripping device 4 is operated as described above.
The lower segment 301 is attached to the holding member 168 of No. 6 via the pin 206 in a suspended state, and the drive mechanism 114 is operated from this state to integrally integrate the lower segment 301 and the holding device 116 in the inner radius of rotation of the elector ring 48. (Upward in this state). Then, the elector ring 48 is rotated again to set the lower segment 301 to the position corresponding to the desired assembly position, and then the drive mechanism 114 is operated again to move the lower segment 301 in the outward direction of the radius of gyration. This allows the lower segment 301 to be set at a desired assembly position (FIG. 21 (b)).
reference). Here, since the center of the arc drawn by the erector ring 48 and the center of the arc drawn by the inner peripheral surface of the skin plate 10 (the assembly surface of the lower segment 301) substantially match,
The operating direction of the segment holding device 46 (that is, the conveying direction of the lower segment 301) and the direction of the normal line of the inner peripheral surface of the skin plate 10 are also substantially the same, and therefore the lower segment 3 is operated by the operation of the segment holding device 46.
01 can be smoothly set on the inner peripheral surface of the skin plate 10.

After setting, the above segment holding device 46
By removing the lower segment 301 from the holding member 168 and further repeating the same operation as described above, the other lower segment 301 can be set at a predetermined assembly position.

(2) Assembly of Side Segment 302 (FIGS. 22 (a) to 22 (f)) First, the electret ring 48 is rotated from the state shown in FIG. Turn up. Then, from this state, the lifting hydraulic cylinder 60
The erector ring 48 and its support 50 are raised by extending the rod. At this time, between the ends 91 of the elector ring 48 and the elector ring support 5
By passing the screw conveyor 26 between the ends of 0, the electoring ring 48 and its support 50 can be raised without interfering with the screw conveyor 26.

Due to this rise, the elector ring 48 is moved to
2 (a) to 2 (f), the lock device 100 is operated to position the lock pin 1 at the middle position.
By engaging 06 with the middle lock hole 99 on the fixed frame 54 side, the erector ring 48 and its support 50 are fixed at this position. In this position, FIG.
As shown in (a) to (f), the screw conveyor 2
6 is located completely inside the electoring ring 48,
The elector ring 48 can freely rotate without interfering with the screw conveyor 26. On the other hand, a segment receiving beam 208 is installed inside the shield machine, and the elector ring 48 is provided to receive the side segment 302.
The side segment 302 is placed by the segment receiving beam 208 at a position one step higher than that of the lower segment 301 so that the side segment 302 does not have to be lowered (FIG. 22A).

In this state, the side segment 302 on the segment receiving beam 208 is hung and fixed to the lower end portion of the holding member 168 in the same manner as described above, and the erector ring 48 is rotated from this state so that the side segment 302 is rotated. Orient segment 302 to the desired assembly position (FIG. 22).
(B)).

Here, if the segment holding device 46 and the side segment 302 are located at the sideways positions as shown by point P in FIG. 26B, the operating direction of the segment holding device 46 (that is, the electret ring 48 Since the radial direction; arrow AP) and the normal direction of the inner peripheral surface G of the skin plate 10 coincide with each other, the segment holding device 46 does not change.
The side segment 302 can be assembled smoothly even if the segment 302 is conveyed to the outside in the radial direction by operating the above, but the position deviates from the point P, for example, the position of the point Q in FIG. 26B. 22 (b) and the segment holding device 46 is located at the position shown in FIG. 22 (b), since the shape of the inner peripheral surface G of the skin plate 10 is not circular, the operating direction of the segment holding device 46 (direction of arrow AQ) is The normal direction of the inner peripheral surface G of the skin plate 10 (the direction indicated by the chain double-dashed line NL in FIG. 26A) does not match, and the side segment 302 can be smoothly moved even if the segment holding device 46 is operated. It cannot be installed in the desired assembly position.

Then, by operating the slide driving cylinder 132 from this state, the segment holding device 46 is slid in the rotational tangential direction of the eclectic ring 48 integrally with the moving body 112, as shown in FIG. 26 (b). By positioning at the position of the point Q ′, the operating direction of the segment holding device 46 (the direction of arrow AQ ′ in FIG. 26B) and the normal direction of the inner peripheral surface G of the skin plate 10 are matched. From this state, the segment holding device 46 is actually operated to move the side segment 302 toward the outer side of the radius of rotation of the elector ring 48, so that the side segment 302 is the same as the lower segment 301.
Can be incorporated smoothly.

After that, the side segment 302 is removed from the holding member 168, and the same procedure as described above is performed as shown in FIG.
Another side segment 302 can be incorporated by performing a series of operations of (a) → (d) → (e) → (f).

(3) Assembly of the upper segment 303 and the key segment 304 (FIGS. 23A to 23D, FIG. 24)
(A) to (d), and FIG. 25) First, similarly to when assembling the side segment 302, the upper segment 303 on the segment receiving beam 208.
Is received at the middle position by the segment holding device 46 (FIG. 23 (a)). Then, this segment holding device 4
6 and the elector ring 48 are integrally rotated to a predetermined angle ((b) in the figure), and the lifting hydraulic cylinder 6
The rod of No. 0 is further extended so that the erector ring 48 and its supporting body are integrally moved to the upper position, and the erector ring 48 and its supporting body 50 are fixed to the fixed frame 54 side by the locking device 100 at this position. Then, as in the case of assembling the side segment 302,
By moving the moving body 122 and the segment holding device 46 integrally by the operation of the slide driving cylinder 132, the operating direction of the segment holding device 46 and the normal direction of the inner peripheral surface G of the skin plate 10 are matched (see FIG. Two
3 (c)), from this state, the segment holding device 46 is operated to move the upper segment 303 to the outer side in the radial direction of the elector ring rotation.
03 can be smoothly incorporated ((d) in the same figure).

24 (a) to 24 (d) in the same manner.
By performing the operation of another upper segment 3
No. 03 can be incorporated, and by further performing the operation shown in FIG. 25, the key segment 304 can be press-fitted to complete the one-step segment assembling process.

As described above, in this erector device, the segment holding device 46 is not directly connected to the erector ring 48, but the movable body 112 is provided slidably on the erector ring 48 and the segment holding device is held on the movable body 112. Since the device 46 is connected, even if the radial direction of rotation of the elector ring 48 does not match the normal direction of the inner peripheral surface of the skin plate 10 due to the fact that the excavation shape is not a circle, the moving body 112 and the segment holder are held. By sliding the device 46, the operating direction of the segment holding device 46 can be aligned with the normal direction, and by operating the segment holding device 46 in this state, a smooth segment assembling operation can be performed as in the case of a circle. Can be realized.

In addition, in this embodiment, since the erector ring support 50 itself can be moved up and down, even if the excavation shape is far from the circle, the erector ring 48 relative to the erector ring support 50. By combining the rotational movement of 1 and the translational movement of the above-mentioned electret ring support body 50, the segment 30 can be assembled smoothly without any inconvenience.

Further, in the apparatus of this embodiment, the shape of the elector ring 48 is obtained by removing a part of the complete ring,
That is, since the shape has the terminal end 91, even when an obstacle such as the screw conveyor 26 exists at the center of the shield machine, the erector ring 48 can be raised and lowered and rotated without inconvenience while avoiding the obstacle.

The present invention is not limited to such an embodiment, and the following modes can be adopted as an example.

(1) In the above-described embodiment, the erector ring support 50 that supports the erector ring 48, which is a rotating body, is shown to be translatable. However, the inner peripheral surface of the skin plate 10 slightly deviates from the circle. In the case where the segment 30 is assembled with respect to the segment 30, the above-mentioned electoring support 50 may be fixed to the shield machine main body side. In this case, the stroke of the segment holding device 46 in the radial direction of rotation is changed in accordance with the rotation angle of the elector ring 48, and the moving body 112 is similar to the above embodiment.
By sliding to match the operating direction of the segment holding device 46 and the normal direction of the inner peripheral surface G of the skin plate 10, the smooth segment 30 can be assembled similarly to the above.

(2) In the present invention, regardless of the specific means for driving the moving body 112, for example, the driving force of the motor is converted into a linear motion by a rack and pinion mechanism, etc.
12 may be driven to slide.

(3) As the segment holding means in the present invention, any conventionally known means can be widely applied as long as it moves the segment in the substantially radial direction of rotation of the rotating body.

(4) The present invention can be applied regardless of the specific structure and type of the shield machine itself (open type, closed type, earth pressure type, mud type, etc.).

[0057]

As described above, according to the present invention, the guide member is fixed to the end portion of the rotating body which rotates about the axis substantially parallel to the propelling direction of the shield machine, and the moving member is rotated by the guide member. Since the guide is supported so as to be linearly movable in the rotational tangential direction and the segment holding device is connected to this moving body,
Even if the radial direction of rotation of the rotating body does not coincide with the normal direction of the segment assembly surface, the moving body and the segment holding device are simply moved linearly in the guide direction of the guide member (rotational tangential direction of the rotating body). With the configuration, the operating direction of the segment holding means can be matched with the normal direction, and thus, there is an effect that the segment can be smoothly assembled into a shape other than a circle.

[Brief description of drawings]

FIG. 1 is a cross-sectional front view of a shield machine including an erector device 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 front view of an elevating / lowering support body in the above-described elector device.

FIG. 4 is a sectional view taken along line IV-IV in FIG. 3;

FIG. 5 is a sectional front view showing an elevating body and a guide mechanism thereof in the erector device.

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

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

FIG. 8 is a front view of an erector ring and its support in the erector device.

9 is a sectional view taken along line IX-IX in FIG.

FIG. 10 is a front view of a lock device provided on the elector ring support body.

11 is a sectional view taken along line XI-XI in FIG.

FIG. 12 is a plan view of a segment holding device provided on the elector ring.

FIG. 13 is a side view of the segment holding device.

FIG. 14 is a front view of the segment holding device.

FIG. 15 is a plan view showing a connecting structure of a rod end portion and a connecting plate in the segment holding device.

16 (a) is a view obtained by rotating the view taken in the direction of arrow A in FIG. 15 counterclockwise, and FIG. 16 (b) is a sectional view taken along line BB of FIG.

FIG. 17 is a partial cross-sectional front view of the main body of the segment holding device, which is a cross-sectional view taken along line XVII-XVII in FIG.
It is a figure rotated by °.

FIG. 18 is a rear view of the main body of the holding device and is XV of FIG.
FIG. 3 is a view obtained by rotating the view taken along arrow III by 90 °.

FIG. 19 is a cross-sectional plan view of the holding device body.

FIG. 20 is a cross-sectional side view of the holding device body.

21 (a) and 21 (b) are explanatory views showing a process of assembling a lower segment by using the above erector device.

22 (a), (b), (c), (d), (e), and (f) are explanatory views showing a process of assembling a side segment by using the above erector device.

23 (a), (b), (c) and (d) are explanatory views showing a step of assembling one upper segment using the above-mentioned erector device.

FIGS. 24 (a), (b), (c), and (d) are explanatory views showing a process of assembling the other upper segment by using the above erector device.

FIG. 25 is an explanatory diagram showing a step of assembling a key segment by using the above erector device.

26 (a) is an explanatory view showing a state in which the moving direction of the conventional segment holding portion and the normal direction of the inner peripheral surface of the skin plate do not match, and FIG. 26 (b) slides the segment holding device in the device of the present invention. It is explanatory drawing for demonstrating that the said direction corresponds by this.

FIG. 27 is a sectional side view showing an example of a conventional shield machine.

FIG. 28 is a front view of the shield machine.

FIG. 29 is a sectional side view showing an erector device provided in the shield machine.

FIG. 30 is a front view of the elector device.

[Explanation of symbols]

 46 Segment Holding Device (Segment Holding Means) 48 Erector Ring (Rotating Body) 50 Elector Ring Support (Rotating Body Support) 96 Rotation Drive Motor (Rotating Body Drive Means) 112 Moving Body 130 Guide Member 132 Slide Driving Cylinder ( Moving body driving means)

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Shohei Senda 1-7-2 Taito, Taito-ku, Tokyo Within the Civil Engineering Research Center (72) Inventor Masaru Akiyama 2-3148, Kogasaki, Matsudo-shi, Chiba (72) Invention Person Masaki Kozaki 7-30, Tsumon Omagacho, Nishinomiya-shi, Hyogo Prefecture (72) Inventor Toshinori Asahi 8-10 Hananomine, Nishinomiya-shi, Hyogo Examiner Toshihiko Fujita (56) Reference JP-A-2-171498 (JP, A) JP-A-2-171499 (JP, A)

Claims (1)

[Claims] 1. An erector device provided in a shield machine for assembling a segment along an excavation cross-sectional shape other than a circle, wherein the shield machine is rotatable about an axis in a direction substantially parallel to a propulsion direction thereof. and supported rotating body, a rotating body driving means for rotationally driving the rotation body, and the moving body,
Fixed to the end of the rotating body, the moving body
Guide part that guides and supports linear movement in the rotation tangential direction of
And wood, and the movable body drive means for linear phase <br/> moving in the guiding direction of the guide member the moving body is coupled to the moving body, substantial rotation of the rotating body segment while holding the segments An erector device in a shield machine, comprising: segment holding means for moving in a radial direction.