JPH08158797A - Simultaneous driving handling segment assembly device - Google Patents

Abstract

PURPOSE: To make it possible to accurately position an erector to the existing segment during the driving in a simultaneous driving shield and, to enable the erector to follow the driving of an excavator main body. CONSTITUTION: In a shield excavator 1 for making both driving by an excavator main body 2 and assembly of a segment 22 by an erector 21 simultaneously, an inside cylinder 19 is connected to the excavator main body 2 through a pulling bracket 18. A push-up jack 24 bearing load of the inside cylinder is provided to the front thereof, and a reshoring jack 27 developed downward is provided to the rear of the inside cylinder 19. The circumference of the inside cylinder 19 is covered with an outside cylinder 29 in a slidable manner through a following jack 31. The rector 21 is provided to the front of the outside cylinder 29, a round holding jack 45 developed to the radial outside is provided to the rear of the outside cylinder 29 and, an overturning holding jack 49 developed to the radial outside is provided to further backward of the rear thereof.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a simultaneous excavation type segment assembly apparatus for simultaneously excavating a face and assembling a segment.

[0002]

2. Description of the Related Art A shield machine comprises a machine body having a cutter for excavating a face, an erector for assembling a segment on the inner surface of a trench, and a propulsion jack for digging the machine body by using an existing segment as a reaction force. ing. The above-mentioned erector is generally of a type fixed to the excavator main body, but in this type of shield excavator, the erector also advances while the excavator main body is excavating, so that excavation and segment assembly at the same time. could not.

That is, the propulsion jack is one of the segments.
If the excavator body was excavated until the ring progressed, the excavation was stopped and the segment was assembled with the erector stopped. However, if the excavation and the segment assembly are alternately performed in this way, the construction period cannot be shortened. Therefore, a shield machine (so-called simultaneous excavation shield) has been developed in which the erector is separated from the movement of the body of the machine and the excavation and the assembly of the segments can be performed at the same time.

In this type of shield machine, for example, FIG.
As shown in FIG. 6, the erector a is slidable in the axial direction along the holding beam c with respect to the excavator main body b, and the moving cylinder d is extended along with the excavation of the excavator main body b so as to leave the erector a. It is possible to Also,
As shown in FIG. 17, an erector cart e completely separated from the excavator body is provided, and an erector g is provided at the tip of a telescopic cylinder f of the cart e (Japanese Patent Laid-Open No. 58-120).
(See gazette No. 999).

[0005]

However, in the technique of FIG. 16, it is actually extremely difficult to synchronize the excavation of the excavator body b by the propulsion jack h with the slide of the erector a by the moving cylinder d. Actually, the erector a cannot be accurately positioned and held with respect to the existing segment i during the excavation. Further, since the holding beam c is a cantilever lever, the tip of the holding beam c is bent, which also causes a positional shift. Further, when performing the left and right curve excavation, the holding beam c integrated with the excavator body b swings to the left and right, and the positional relationship of the erector a with respect to the existing segment i shifts. For these reasons, the grip segment j cannot be fitted accurately.

In the technique of FIG. 17, the erector cart e
Must stop during the assembly of the segment k and advance to the next assembly position after the assembly of one ring is completed. However, the carriage e is provided with a self-propelled means for on / off control, etc. Then, the device becomes large. That is, it is difficult for the erector g to follow the excavation of the excavator body.
Further, since the erector cart e is arranged in the center of the mine, it becomes difficult to supply the segment k from the rear side to the erector g side. Further, since the telescopic cylinder f is a cantilever lever, the tip of the telescopic cylinder f is bent, which causes a positional deviation. Further, depending on the weight of the segment k, the erector cart e may fall.

The object of the present invention, which was devised in view of the above circumstances, is that in a so-called simultaneous excavation shield, the erector can be accurately aligned with the existing segment even during excavation, and the eclectic body is the main body of the excavator. It is an object of the present invention to provide a segment assembling apparatus capable of simultaneously excavating, which can easily follow the excavation.

[0008]

In order to achieve the above object, the present invention provides a simultaneous excavation-compatible segment assembling apparatus that simultaneously excavates the excavator body and assembles segments by the erector. The inner cylinder is connected via a push-up jack that supports the load on the front of the inner cylinder, the refill jack that extends downward at the rear of the inner cylinder, and the outer cylinder that follows the outer cylinder on the outer circumference of the inner cylinder. It is slidably covered via an erector on the front of the outer cylinder, and a perfect circle holding jack that extends outward in the radial direction is provided on the rear of the outer cylinder. It is provided with a falling holding jack.

[0009]

According to the above construction, when the excavator body moves forward,
The inner cylinder connected to the excavator body via the traction bracket and the outer cylinder covered with the inner cylinder try to move forward integrally.

Here, if the perfect circle holding jack and the fall holding jack provided on the rear portion of the outer cylinder are extended and the tips of the jacks are pressed against the existing segments to be fixed, the outer cylinder is left behind and only the inner cylinder is left. Follows the excavation of the excavator body. At this time, sliding of the outer cylinder and the inner cylinder is allowed by expansion and contraction of the follow-up jack. As a result, the inner cylinder is pulled along with the excavation of the excavator main body, but the erector provided in the front part of the outer cylinder is fixed to the existing segment, and the excavation by the excavator main body and the segment by the erector are performed. Can be assembled at the same time.

At this time, the erector provided in the front portion of the outer cylinder is held at two points by the perfect circle holding jack provided in the rear portion of the outer cylinder and the falling holding jack behind it.
It is precisely fixed in position with respect to the existing segment. Also,
The reaction force generated by the segment pushing force during the segment assembly is strongly supported by the two-point holding of the perfect circle holding jack and the falling holding jack. Further, the inner cylinder slides inside the outer cylinder fixed as described above and is pulled by the forward movement of the excavator main body, and the load fluctuation caused thereby is supported by the perfect circle holding jack and the falling holding jack. The segment gripped by the erector is supported at both ends (three-point support) by the push-up jack on the front part of the inner cylinder and the perfect circle holding jack and the fall holding jack on the rear part of the outer cylinder. Therefore, the support rigidity is increased and the bending is significantly reduced as compared with the conventional cantilever support type.

After that, if the inner cylinder advances by one ring of the segment along with the excavation of the excavator body, the excavation is stopped,
The refill jack provided on the rear part of the inner cylinder is extended, and its tip is pressed against the existing segment. Then, the perfect circle holding jack and the fall holding jack can be retracted. Then
The refill jack and push-up jack support the load of the inner cylinder outer cylinder and the erector, and the outer cylinder is load-free. Then, the outer cylinder that has become free is advanced to the initial position by expanding and contracting the tracking jack. After returning to the initial state in this way, extend the perfect circle holding jack and the fall holding jack again and press the tips of the jacks against the existing segments to fix them, leaving the outer cylinder behind and excavating only the inner cylinder. Tow the machine body to dig.

In this way, by causing the outer cylinder to follow the inner cylinder towed by the excavator main body, like an elongate insect, the erector provided on the outer cylinder can easily and accurately follow the excavator main body. it can.

[0014]

An embodiment of the present invention will be described with reference to the accompanying drawings.

FIG. 1 shows a side view of the shield machine 1.
As shown in the figure, a cutter 4 for excavating a face is rotatably provided via a motor 5 and a transmission gear 6 at the front part of a cylindrical shield frame 3 forming an outer shell of the excavator main body 2. The earth and sand excavated by the cutter 4 is taken into the earth and sand intake chamber 8 which is partitioned from the inside of the mine by the partition wall 7. The excavated earth and sand taken into the earth and sand intake chamber 8 is mixed with the muddy water supplied from the mud pipe 9 and fluid-transferred through the mud pipe 10.

That is, in the earth and sand intake chamber 8, the face water pressure
A mud pipe 9 for supplying mud water against the face earth pressure and a mud pipe 10 for transferring and discharging excavated earth and sand in a mud state are connected. The mud sending pipe 9 and the mud discharging pipe 10 have open / close valves 11 and 12, respectively, and are short-circuited by a bypass pipe 13. The bypass pipe 13 is provided with an opening / closing valve 14. By controlling these on-off valves 11, 12, and 14, it is possible to adjust the circulation amount of the mud water by the mud pipes 9 and 10.

On the inner circumference of the shield frame 3, a plurality of propulsion jacks 16 are provided, the tip of which abuts against the existing segment 15 and which uses the reaction force to propel the excavator body 2 (see FIG. 3). At the tip of the propulsion jack 16,
A shoe 17 is provided that substantially abuts the existing segment 15. Each propulsion jack 16 has a segment 15
It has a stretching stroke of 2 rings or more. This is for facilitating simultaneous assembly of the segment 15 and assembly.

An inner cylinder 19 is connected to the inside of the excavator main body 2 via a towing bracket 18. Inner cylinder 1
9 is arranged along the longitudinal direction at the center of the tunnel as shown in FIG. 2, and is formed in an octagonal shape as shown in FIGS. Inside the inner cylinder 19, the above-mentioned mud pipes 9 and 10 and the hoist rail 20 are housed. The hoist rail 20 has a hoist (not shown) for supplying the assembly segment 22 to the erector 21.
Is engaged so that it can travel. In addition, inside the inner cylinder 19,
A partition plate 23 for reinforcement is provided.

At the front portion of the inner cylinder 19, two push-up jacks 24 for supporting a part of the load of the inner cylinder 19 are provided. One end of each push-up jack 24 is connected to the side portion of the inner cylinder 19, and the other end thereof is the propulsion jack 16 of the shield frame 3.
Is connected to the cover 25 and is arranged in a V shape as shown in FIG. Each connecting portion 26 at both ends of the push-up jack 24 is movable in a certain range in the axial direction and the radial direction by, for example, providing some play of the connecting pin.
Alternatively, a universal joint or the like may be used. This allows a slight change in the relative postures of the excavator body 2 and the inner cylinder 19.

At the rear portion of the inner cylinder 19, two rearranging jacks 27 that extend downward are provided. As shown in FIG. 5, the refill jacks 27 are vertically arranged with a space on the back surface of the inner cylinder 19. The root portion is fixed to the back surface by a bracket 28 and the tip portion extends downward. So as to abut the existing segment 15. A shoe 28 formed to match the curvature of the segment 15 is provided at the tip of the refill jack 27. The shoe 28 is designed to be lifted at least above the assembly segment 22 being transported so as not to interfere with the transportation of the assembly segment 22 by the hoist to the erector 21 side.

An outer cylinder 29 is slidably fitted around the outer circumference of the inner cylinder 19. The outer cylinder 29 is formed in an octagonal shape to match the shape of the inner cylinder 19 as shown in FIGS. A guide roller 3 that rolls on the surface of the inner cylinder 19 to reduce the resistance of sliding movement is provided between the front and rear portions of the outer cylinder 29.
0 is provided for each. Each guide roller 30 is
As shown in FIG. 4, two are provided on the upper surface of the outer cylinder 29, two on each side surface, and two on the lower surface. These guide rollers 30 support the inner cylinder 19 on the outer cylinder 29 and also perform positioning (centering) of the inner cylinder 19 with respect to the outer cylinder 29.

As shown in FIG. 6, the outer cylinder 29 is connected to the inner cylinder 19 via a follow-up jack 31. The follow-up jack 31 moves the outer cylinder 29 relative to the inner cylinder 19 and has a stretching stroke of one ring or more of the segments 22 and 15. That is, the outer cylinder 29
The relative sliding amount of the inner cylinder 19 is at least one ring of the segments 22 and 15.

At the front portion of the outer cylinder 29, as shown in FIG.
An erector 21 for assembling the segment 22 is provided. The erector 21 includes a revolving ring 32 that is inserted into an outer cylinder 29 and revolves freely (see FIG. 3), an erector beam 33 attached to the rear surface of the revolving ring 32, a guide rod 34 and a lifting jack 35 on the erector beam 33. It is composed of a suspension beam 36 which is hung up and down via a segment grip portion 38 which is provided on the suspension beam 36 via a horizontal sliding jack 37. According to this configuration, the segment 22 gripped by the grip portion 38
Is moved in the axial direction by the sliding jack 37, in the radial direction by the elevating jack 35, and in the circumferential direction by the turning ring 32.

Front surface of the turning ring 32 (front surface of the tunnel)
An externally toothed gear 39 is provided on each of the gears as shown in FIG. The external gear 39 is supported by a ring frame 40 fixed to the outer cylinder 29 via a bearing 41. That is, the erector 21 including the turning ring 32 is supported by the outer cylinder 29 via the bearing 41. Also,
The external gear 39 is in mesh with the pinion 43 of the motor 42. The motor 42 is attached to the ring frame 40 via a bracket 44, and is fixed to the outer cylinder 29. Therefore, when the motor 42 rotates, the swivel ring 32 also rotates.

At the rear of the outer cylinder 29, as shown in FIG.
Four true circle holding jacks 45 that extend radially outward are provided. As shown in FIG. 4, the perfect circle holding jacks 45 are attached to the left and right sides of the outer cylinder 29, and are provided in a vertical V shape. Each of the perfect circle holding jacks 45 expands and contracts outward in the radial direction, and its tip comes into contact with and separates from the existing segment 15. A shoe 46 formed to match the curvature of the segment 15 is provided at the tip of each perfect circle holding jack 45. The shoe 46 has a branch portion 47 that is bifurcated in the axial direction of the tunnel. This is to disperse the pressing force on the existing segment 15.

Further, each branch portion 47 is located outside the shield frame 3 as shown in FIG. If the perfect circle holding jack 45 is advanced in the shield frame 3, the load from the outside of the segment 15 cannot be expected. Therefore, the load of the perfect circle holding jack 45 and the load of the inner cylinder 19 and the outer cylinder 29 are applied to the joint bolts of the respective segments 15. Is added, and the joint bolt may be damaged. If the perfect circle holding jack 45 is advanced outside the shield frame 3 as in this embodiment, the perfect circle holding jack 4
The load of No. 5 and the load of the inner cylinder 19 and the outer cylinder 29 are segment 1
5 The load on the joint bolt is reduced because it is canceled by the earth pressure from the outside.

An extension member 48 extending rearward is attached to the rear portion of the outer cylinder 29. The extension member 48 is shown in FIG.
As shown in FIG. 5 and FIG. 5, it is made of a beam material having a U-shaped cross section attached to the left and right side surfaces of the outer cylinder 29. As shown in FIG. 2, four extension holding jacks 49 that extend radially outward are provided on the rear portion of the extension member 48. Each fall holding jack 49 has a perfect circle holding jack 45.
Similarly to the above, four are provided in a vertical V shape. Each of these falling holding jacks 49 expands and contracts radially outward,
The tip thereof comes into contact with and separates from the existing segment 15. A shoe 50 formed to match the curvature of the segment 15 is provided at the tip of each falling holding jack 49.

The inner cylinder 19 fitted with the outer cylinder 29 in this manner
As shown in FIG. 2, is connected to the excavator main body 2 via a tow bracket 18 and is towed along with the excavation of the excavator main body 2. Tow bracket 18
As shown in FIG. 6, includes a main body side bracket 51 attached to the shield frame 3 side and an inner cylinder side bracket 52 attached to the inner cylinder 19 side. As shown in FIG. 7, the main body side bracket 51 is made of a flat plate arranged at right angles to the axial direction of the tunnel, the lower end thereof is fixed to the propulsion jack cover 25 of the shield frame 3, and the upper end thereof is the bottom surface of the inner cylinder 19. It is separated from 53 by a predetermined distance 54. That is, the load of the inner cylinder 19 is not supported.

The inner cylinder side bracket 52 comprises a pair of roller members 55 sandwiching the main body side bracket 51 from the front and rear in the tunnel axis direction. As shown in FIGS. 7 and 8, each roller member 55 includes a center rod 56 attached to the bottom surface 53 of the inner cylinder, a sleeve 57 rotatably fitted to the center rod 56, and right and left sides of the sleeve 57. The roller 5 rotatably supported by the holding bracket 58 on the roller 5.
It consists of 9. An extremely small gap 60 is formed between each roller 59 and the main body side bracket 51.

According to this structure, the excavator body 2 and the inner cylinder 1
9, the flat plate of the main body side bracket 51 is changed to the roller member 55 of the inner cylinder side bracket 52.
Is absorbed by rotating around the center rod 56. Further, the relative vertical changes in posture between the excavator main body 2 and the inner cylinder 19 are caused by the gap 60 between the flat plate of the main body side bracket 51 and the roller member 55 of the inner cylinder side bracket 52, and the flat plate of the main body side bracket 51. Is absorbed by the distance 54 between the upper end of the and the bottom surface 53 of the inner cylinder 19.

The operation of this embodiment having the above configuration will be described.

When the excavator body 2 is advanced, first the cutter 4 shown in FIG. 1 is rotated by the motor 5 and the propulsion jack 16 is advanced. Then propulsion jack 1
The shoe 17 at the tip of 6 is pressed against the end of the existing segment 15, and the cutter 4 is pressed against the face by using it as a reaction force. As a result, the excavator body 2 advances while excavating the face. Then, the tow bracket 18 is attached to the excavator main body 2.
The inner cylinder 19 and the outer cylinder 29, which are connected to each other through the inner cylinder 19 and the outer cylinder 29, are about to integrally move forward as the excavator body 2 moves forward.

Here, as shown in FIG. 9, the perfect circle holding jack 45 and the falling holding jack 49 provided at the rear portion of the outer cylinder 29 are extended to extend the branch portions 47 and the shoes 50 at the tips of the jacks 45, 49. Is pressed against the existing segment 15 and fixed. As a result, the outer cylinder 29 is left behind (fixed to the existing segment 15) and only the inner cylinder 19 follows the excavation of the excavator body 2 as shown in FIG. At this time, the sliding of the outer cylinder 29 and the inner cylinder 19 is allowed as the follow-up jack 31 advances. The follow-up jack 31 is pressure-free (circulation control) at this time.

As described above, the inner cylinder 19 is pulled along with the excavation of the excavator main body 2, but the outer cylinder 29 is fixed to the existing segment 15 by the perfect circle holding jack 45 and the overturning holding jack 49. The erector 21 provided in the front portion of the outer cylinder 29 maintains a constant relative positional relationship with the existing segment 15 regardless of the excavation of the excavator body 2. Therefore, the excavation by the excavator main body 2 and the assembly of the segment 22 by the erector 21 can be performed at the same time.

At this time, the erector 21 provided in the front portion of the outer cylinder 29 includes a perfect circle holding jack 45 provided in the rear portion of the outer cylinder 29 and a fall holding jack provided behind the perfect circular holding jack 45 via an extension member 48. 49 and two points are held and accurately positioned. At this time, the push-up jack 24 provided on the front portion of the inner cylinder 19 does not contribute to the positioning of the erector 21. Because the push-up jack 24 is
This is because the stroke control for fixing the position of the inner cylinder 19 is not performed, but the pressure control for lifting the inner cylinder 19 at a predetermined pressure is performed, and the front portion of the inner cylinder 19 is floating-supported at a predetermined pressure. is there.

As described above, since the position of the erector 21 is accurately held with respect to the existing segment 15 by being held at two points by the perfect circle holding jack 45 and the overturning holding jack 49, the suspended segment 22 can be accurately positioned. Can be fitted into a predetermined assembly space. Further, the reaction force generated by the segment pushing force during the segment assembly is strongly supported by the two-point holding of the perfect circle holding jack 45 and the overturning holding jack 49. Also, the inner cylinder 19
Slides inside the outer cylinder 29 fixed as described above and is towed by the forward movement of the excavator main body 2. Due to the load fluctuation caused thereby, the perfect circle holding jack 45 and the falling holding jack 49 are provided.
Supported by and.

On the other hand, the load of the erector 21 and the segment 22 suspended by the erector 21 is applied to the lower side A of the perfect circle holding jack 45 and the fall holding jack 49 as shown by the arrow in FIG.
Upper side B and lower side C of the push-up jack 24 on the front part of the inner cylinder 19
And will join. This is because the push-up jack 24 is pressure-controlled and does not position the inner cylinder 19, but pushes up the inner cylinder 19 with a predetermined pressure. If the push-up jack 24 is not provided, the erector 2
The load of 1 and the hanging segment 22 will be concentrated on the lower side A of the perfect circle holding jack 45 and the upper side B of the overturn holding jack 49, and the load on the existing segment 15 will be excessive, which is not preferable.

On the other hand, according to this embodiment, the erector 2
The load of 1 and the hanging segment 22 is the push-up jack 24
Since both ends are supported (three-point support) by the perfect circle holding jack 45 and the fall holding jack 49, the existing segment 1
The load on 5 is distributed and reduced. In addition, the support rigidity is increased and the conventional cantilever support type (see FIGS. 16 and 17).
Deflection is drastically reduced compared to.

Thereafter, the inner cylinder 1 is moved along with the excavation of the excavator body 2.
When 9 has moved forward by one ring of the segment 15, the propulsion jack 16 is stopped to stop the excavation, and as shown in FIG. 11, the refill jack 27 provided at the rear part of the inner cylinder 19 is extended and its tip end is extended. The shoe 28 of is pressed against the existing segment 15. Then, the push-up jack 24 is switched from the pressure control to the stroke control. Stroke control means holding the push-up jack 24 at a constant extension stroke. Then, the perfect circle holding jack 45 and the fall holding jack 49 can be retracted. Then, the transfer jack 27 and the push-up jack 24 support the load of the outer cylinder 29 of the inner cylinder 19 and the erector 21, and the outer cylinder 29 becomes load-free.

The outer cylinder 29 which has become free is shown in FIG.
As shown in FIG. 2, the follow-up jack 31 is expanded and contracted to advance to the initial position. After that, as shown in FIG. 13, the perfect circle holding jack 45 and the fall holding jack 49 are extended again, and the branch portion 47 and the shoe 50 at the tip of each jack are pressed and fixed to the existing segment 15 to be in the initial state (FIG. 9 and FIG. 10), the outer cylinder 29 is left behind and only the inner cylinder 19 is pulled to the excavation of the excavator main body 2.

In this way, the outer cylinder 29 is made to follow the inner cylinder 19 pulled by the excavator main body 2 like a worm, so that the erector 21 provided on the outer cylinder 29 is moved.
Can be easily and accurately followed.

By the way, as shown in FIG. 14 and FIG.
In some cases, the excavator body 2 makes a curve excavation into an existing tunnel (existing segment 15). In this case, the outer cylinder 29 and the inner cylinder 19 which are positionally fixed to the existing tunnel side (the existing segment 15 side) by the perfect circle holding jack 45 and the fall holding jack 49 and the excavator body 2 which is deflected in the curve direction are twisted. Will occur. This is because the curve direction and the existing tunnel direction are different. This kojiri is resolved as follows.

First, at this time (from FIG. 9 to FIG. 10), the push-up jack 24 is pressure-controlled so that the push-up pressure is constant, and floatingly supports the front portion of the inner cylinder 19 at a constant pressure. Therefore, as shown in FIG. 15, the push-up jacks 24 are absorbed by the push-up jacks 24 losing the bend force and expanding and contracting. That is, the pressure for controlling the pressure of the push-up jack 24 is set to be smaller than the bending force, and the push-up jack 24 is adapted to expand and contract appropriately according to the bending.

Further, the pulling bracket 18 connecting the inner cylinder 19 and the excavator main body 2 is also twisted. That is, between the main body side bracket 51 that is deflected in the curve direction and the inner cylinder side bracket 52 positioned in the existing tunnel,
There is a twist. This twist is absorbed by rotating the inner cylinder side bracket 52 shown in FIGS. 6 to 8 around the center rod 56 with respect to the main body side bracket 51 (flat plate) which is deflected in the curve direction.

Further, as shown in FIG. 14, the push-up jack 2
The connecting portion 26 on the side of the excavator body 2 and the connecting portion 26 on the side of the inner cylinder 19 of No. 4 freely tilt within a predetermined range, respectively, and the above-mentioned twist is absorbed. In addition, a gap 60 provided between the main body side bracket 51 and the inner cylinder side bracket 52 shown in FIG.
Also, the warp is absorbed also by the distance 54 provided between the upper end of the main body side bracket 51 and the bottom surface 53 of the inner cylinder 19 shown in FIG.

As for the inner cylinder 19 and the outer cylinder 29, which are displaced from the tunnel axis as shown in FIG. 15, the stroke of the push-up jack 24 after the outer cylinder 29 is pulled forward as shown in FIG. Is adjusted (matches the tunnel axis) by adjusting the zero point. That is, such a shift is corrected for each slide of the outer cylinder.

[0047]

As described above, according to the present invention, the erector can be accurately aligned with the existing segment even during excavation, and the erector can easily and accurately follow the excavation of the excavator body. Can be made.

[Brief description of drawings]

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

FIG. 2 is an enlarged view of a main part of FIG.

FIG. 3 is a sectional view taken along the line III-III of FIG.

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

5 is a cross-sectional view taken along the line VV of FIG.

FIG. 6 is a partially enlarged view of FIG.

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

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

FIG. 9 is a diagram showing how the shield machine according to the present embodiment operates.

FIG. 10 is a diagram showing an operation state of the shield machine.

FIG. 11 is a view showing an operation state of the shield machine.

FIG. 12 is a diagram showing an operation state of the shield machine.

FIG. 13 is a view showing an operation state of the shield machine.

FIG. 14 is a diagram showing a state in which the shield machine has excavated a curve.

15 is a sectional view taken along the line XV-XV in FIG.

FIG. 16 is a side view of a shield machine (erector portion) showing a conventional example.

FIG. 17 is a side view of an erector portion showing another conventional example.

[Explanation of symbols]

 1 Shield Excavator 2 Excavator Main Body 18 Traction Bracket 19 Inner Cylinder 21 Electa 22 Segment 24 Push-up Jack 27 Reassembling Jack 29 Outer Cylinder 31 Follow-up Jack 45 True Circular Hold Jack 49 Overturn Hold Jack

 ─────────────────────────────────────────────────── ─── Continuation of the front page (71) Applicant 000000974 Kawasaki Heavy Industries, Ltd. 3-1-1 Higashikawasaki-cho, Chuo-ku, Kobe-shi, Hyogo (71) Applicant 000001236 Komatsu Ltd. 2-3-3 Akasaka, Minato-ku, Tokyo No. 6 (71) Applicant 000005522 Hitachi Construction Machinery Co., Ltd. 2-6-2 Otemachi, Chiyoda-ku, Tokyo (71) Applicant 000005119 Hitachi Shipbuilding Co., Ltd. 5-28 Nishikujo, Konohana-ku, Osaka-shi, Osaka ( 71) Applicant 000006208 Mitsubishi Heavy Industries, Ltd. 2-5-1, Marunouchi, Chiyoda-ku, Tokyo (72) Inventor Yoshitaka Yamana 2-3-1, Shimotakatsu, Tsuchiura-shi, Ibaraki Kasumigaura Conduit Works Office (72) Invention Katsuhiko Kato 2-10-2 Otowa, Bunkyo-ku, Tokyo Foundation Lawyer, Center for Advanced Construction Technology (72) Inventor Shigeo Fujii Chita, Aichi Prefecture 11-1 Kitahamacho Ishikawajima Harima Heavy Industries Co., Ltd. Aichi Factory (72) Inventor Susumu Sadada 2-4-1 Hamamatsucho, Minato-ku, Tokyo Kawasaki Heavy Industries Ltd. Tokyo Head Office (72) Norio Mitsuya Tokyo 2-3-6 Akasaka, Minato-ku, Komatsu Ltd. (72) Inventor Nobuyuki Maehara 2--6-2, Otemachi, Chiyoda-ku, Tokyo Hiratsukki Co., Ltd. (72) Inventor Shoji Nishida Osaka, Osaka Hitachi Shipbuilding Co., Ltd. 3-5-28 Nishikujo, Konohana-ku, Yokohama (72) Inventor Akira Hata Koshi 1-1-1 Wadasakicho, Hyogo-ku, Kobe, Hyogo Mitsubishi Heavy Industries Ltd. Kobe Shipyard

Claims (1)

[Claims] 1. A segment assembling apparatus for simultaneous excavation that simultaneously excavates the excavator main body and assembles segments by an erector, wherein an inner cylinder is connected to the excavator main body through a traction bracket, and a front portion of the inner cylinder is connected. A push-up jack for supporting the load is provided on the rear side of the inner cylinder, and a rearrangement jack that extends downward is provided on the rear part of the inner cylinder.The outer cylinder is slidably covered on the outer circumference of the inner cylinder through the follow-up jack. Simultaneously characterized in that an erector is provided in the front part, a perfect circle holding jack that extends radially outward is provided in the rear part of the outer cylinder, and a fall holding jack that extends radially outward is provided further behind it. Excavation-compatible segment assembly equipment.