JP3414094B2 - Segment assembly equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a segment assembling apparatus for assembling segments along a peripheral wall of an underground pit excavated by a shield machine, and an axial moving means for moving the segments in parallel with the shield main body in the axial direction. In particular, it belongs to the technical field of a segment assembling apparatus of the type that is attached to the turning portion of the circumferential turning means.

[0002]

2. Description of the Related Art When constructing an underground mine such as a tunnel with a shield machine, after excavating an underground mine with a unit length by a shield machine, an assembly segment as a peripheral wall assembly member is assembled along the peripheral wall of the underground mine. Lining up. That is, an arcuate segment having a length corresponding to a unit excavation length is connected in the circumferential direction inside the shield body while being connected to an already-assembled existing segment to be assembled into a cylindrical shape. When the assembly of the 1-ring segment is completed in this way, the underground mine of 1-ring length is excavated again by the shield machine, the 1-ring segment is assembled in the same manner, and these operations are repeated many times. Continue lining work. As is well known, a segment assembly device called an erector is used to assemble such segments.
When assembling a segment with this erector, hold the segment that has been previously carried in to the specified location with the erector,
The gripped segment is swung in the circumferential direction of the tunnel or translated in the axial direction of the tunnel, and further, the translated segment is moved so as to be pressed in the radial direction to adjoin the assembled segment to be connected. It is necessary to set it in the position. When assembling the segment with the erector, since the segment needs to be gripped and displaced in this way, the erector has at least a gripping means for gripping the segment and a circumferential swiveling means for swirling the segment in the shield body circumferential direction. And axial movement means for moving the segment in parallel with the shield body axial direction, and radial movement means for moving the segment in the shield body radial direction.

Electors equipped with such means are classified into two types depending on the part to which the axial moving means is attached. One is that the axial moving means is attached to the gripping means for gripping the segment, and the grip itself, which is the segment gripping portion, is directly moved in the shield body axial direction by the axial moving means. is there. This former type of erector is of the type shown as a conventional example in FIGS. 1 to 4 of the gazette to be described later, and the axial direction moving means is thus limited in space for holding means. I am trying to install it inside.
Due to such space restrictions, it is not possible to increase the total length of the axial movement means, so that even if the movement distance of the shield main body axial direction by the axial movement means is small, such as when the loading place of the assembly segment is located near the erector. Use when you are done. In the other one, the axial moving means is attached to the turning portion of the circumferential turning means, and the gripping means is moved in the axial direction of the shield body through the radial moving means supported by the turning means. Is. This latter type of erector has almost no space restrictions as seen in the former, and the total length of the axial moving means can be made considerably long, so that the loading place of the assembly segment is one ring before the existing segment. It is used when it is necessary to increase the movement distance in the axial direction of the shield body by the axial movement means, such as when it is located in the vicinity of. Recently, in order to improve work efficiency, a continuous excavation-type shield machine that enables excavation even during segment assembly is being developed. The assembly position moves within the shield body. This continuous excavation type shield machine is equipped with a shield jack having a stroke of about two ring widths of the segment, and when the segment is assembled after the excavation of one ring length, the shield jack is continuously propelled to advance the excavation. , The segment can be continuously assembled in parallel with the assembling of the segments, and therefore, the moving distance in the axial direction of the shield body by the axial moving means needs to be one ring or more. On the other hand, there is also a segment axial direction insertion type segment, and even when such a segment is used, it is necessary to set a large movement distance in the axial direction of the shield body. For example, in the final stage of assembling a segment of one ring into a cylindrical shape, a special segment called a wedge-shaped segment is moved from the rear in the axial direction into the remaining gap between the segments. If it is used, it is necessary to increase the moving distance in the axial direction of the shield body. As the latter type of segment assembling apparatus which can meet the above requirements, for example, Japanese Utility Model Publication No. 53-42
The device described in Japanese Patent No. 990 can be mentioned. The present invention seeks to ameliorate the inherent drawbacks of these types of segment assembly equipment.

Therefore, the device described in the above publication is shown as a conventional technique, and the technical contents related to the present invention will be described with reference to FIGS. 10 and 11. FIG. 10 is a vertical sectional view of a conventional segment assembling apparatus, and FIG. 11 is a sectional view taken along line XI-XI of FIG. In describing the technical contents of this conventional technique, the terms are not used as they are in the above publications, but the specifics thereof should be as specific as possible so as to clarify the correspondence relationship with the embodiment of the present invention described later. I try to match it with the example. For details of this conventional technique, refer to the above publication.

In FIG. 10 and FIG. 11, 41 is an erector ring as a turning portion of a ring-shaped circumferential turning means whose outer peripheral portion is rotatably supported by a plurality of rollers 42, and 43 is a gear 44. It is a rotary drive device such as a hydraulic motor that drives the elector ring 41 to rotate. The circumferential turning means for turning the segment in the circumferential direction of the shield body is roughly classified into an eclectic ring 41 as a circling part thereof and a rotation drive device 43 as a driving means of the eclectic ring 41.
Is driven by the drive device 43, it is possible to rotate in a desired rotation direction in the forward and reverse directions by a desired angle. Reference numeral 45 designates a pair of guide rods symmetrically projecting from the rear portion of the elector ring 41, 46 a pair of support cylinders slidably fitted in the pair of guide rods 45, and 47 a pair of guide rods 45. A pair of hydraulic cylinders for driving in the axial direction, which are arranged correspondingly, in which the front end of the piston rod portion is attached to the eclectic ring 41, and the front end of the cylinder portion is attached to a hydraulic cylinder for radial drive described later. The axial moving means for moving the segment in parallel with the axial direction of the shield body is roughly divided into a pair of guide rods 45, support cylinders 46, and hydraulic cylinders 47 for driving the axial direction. It is attached to the elector ring 41 as a turning part of the. Reference numeral 48 denotes a pair of radial direction hydraulic cylinders whose cylinders are attached to a pair of axially driven hydraulic cylinders 47 and a pair of support cylinders 46, and 49 denotes a pair of radial end driven hydraulic cylinders 49. The suspension beam is attached to each piston rod portion of the hydraulic cylinder 48 and has a substantially U-shaped cross section. The radial moving means for moving the segments in the shield body radial direction is roughly divided into a pair of radial driving hydraulic cylinders 48 and a suspension beam 49, and is supported by the axial moving means. A grip device 50 as a gripping means for gripping the segment is attached to the suspension beam 49 of the radial direction moving means, and a position indicator 51 including a limit switch and the like is projectingly provided on the rear end surface. Reference numeral 52 denotes a segment pedestal, and a position indicator 53 that comes into contact with the position indicator 51 to operate it is provided at the front end portion so as to project. The segment pedestal 52 is located in the vicinity of an existing segment considerably rearward of the grip device 50, and can be loaded into the segment pedestal 52 to position the assembly segment. The grip device 50 includes the segment pedestal 5
Grasp the assembly segment positioned on 2. As described above, the conventional segment assembling apparatus is of a type that is composed of the circumferential turning means, the axial moving means, and the radial moving means, and the axial moving means is attached to the turning portion of the circumferential turning means. And, the loading place of the segment is located quite backward.

Since the conventional segment assembling apparatus has such a structure, when the segment which is carried in and positioned on the segment receiving base 52 is gripped, the erector ring 41 is appropriately rotated by the drive unit 43. Then, the pair of radial direction hydraulic cylinders 48 are expanded and contracted to adjust the positions of the grip device 50 in the shield body circumferential direction and the shield body radial direction, and the pair of axial direction hydraulic cylinders 47 are extended. Then, the radial direction moving means is moved together with the grip device 50 backward in the axial direction of the shield body. Then, the position indicator 51 also moves rearward as the suspension beam 49 of the radial moving means moves,
The position indicator 51 is the position indicator 5 of the segment cradle 52.
Upon contact with 3, the position indicator 51 operates to stop the driving of the drive device 43, the hydraulic cylinder 47, and the hydraulic cylinder 48, and automatically stops the movement of the grip device 50 at a predetermined position. With the grip device 50 positioned in this manner, the assembly segment positioned on the segment pedestal 52 is pushed forward to push the grip device 5 into position.
When 0 is operated and the necessary operation is performed, the segment can be gripped by the grip device 50. In the conventional segment assembling apparatus, the axial moving means is attached to the turning portion of the circumferential turning means to move the grip device 50 together with the radial moving means. Therefore, the movement distance in the axial direction of the shield body is increased. be able to.

[0007]

By the way, since the segment assembling apparatus can turn 360 ° for gripping the segments or for assembling the gripped segments, the segment assembling device can rotate in the circumferential direction even when it is fully swung. It is necessary to properly arrange the components of the segment assembly device, such as the swivel means, the axial movement means, the radial movement means, the gripping means, etc., in the shield main body in advance so that they do not collide with other equipment. Is. In short, when the segment assembling apparatus is operated, its constituent elements are the elector ring 41, the guide rod 45, the supporting cylinder 46, the hydraulic cylinder 47 for axial drive, the hydraulic cylinder 48 for radial drive, and the suspension beam 49. No equipment such as a screw conveyor, a water supply / drainage pipe, a work deck, a segment carrying hoist beam, or the like is arranged in the area in the shield body through which the grip device 50 and the like swivelly pass. The restrictions on the arrangement of the devices increase as the machine length of the segment assembling device during operation of the axial moving means increases. However, in the above-described conventional segment assembling apparatus, the hydraulic cylinder 47 for axial driving is extended to move the suspension beam 49 to the position indicated by the chain line 49a so that the assembling segment on the segment pedestal 51 can be gripped. When the hydraulic cylinder 47 is moved, the cylinder portion of the hydraulic cylinder 47 is moved further to the position of the chain line 47a further behind the suspension beam 49, so that the machine length L during the operation of the axial moving means is significantly increased, and There are many restrictions on the arrangement of the. In such a case, in order to arrange the devices in the region of the shield body in the section of the captain L, it is necessary to arrange the devices in the region of the cylinder having the diameter D shown in FIG. Depending on the type of equipment to be placed, it becomes impossible to place it inside the shield body. For example, the screw conveyor is installed diagonally with respect to the central axis of the shield body and has a long length. Therefore, if the machine length L during the operation of the segment assembly device becomes long, the screw conveyor cannot be installed. Further, the work deck used as a scaffold for the segment assembly work can be installed only considerably rearward of the assembly site of the segment, so that it cannot be put to practical use even if installed.

The present invention is intended to solve these problems found in the prior art, and the technical problems thereof are:
In the segment assembly apparatus of the type in which the axial moving means for moving the segment in parallel with the axial direction of the shield body is attached to the turning portion of the circumferential turning means, the length of the axial moving means during operation is It is an object of the present invention to provide a segment assembling apparatus that can be made shorter than the conventional one.

[0009]

The technical problem of the present invention is to provide a circumferential turning means for turning a segment in the shield body circumferential direction, and a segment attached to the turning part of the circumferential turning means to move the segment in the shield body axial direction. An axial moving means for moving in parallel, a radial moving means supported by the axial moving means for moving the segment in the shield body radial direction, and a gripping means attached to the radial moving means for gripping the segment, When constructing a segment assembling device of the type as described above, which is installed in a shield machine, the axial moving means is particularly referred to as "attached to the turning portion of the circumferential turning means in the axial direction of the shield body. An extending support member and a radial moving means supported by the support member so as to move in the axial direction of the shield body are installed. A slide frame attached to the support member, a screw rod having a male screw rotatably attached to the support member so as to extend in the axial direction of the shield body, and a female screw member having a female screw threaded to the screw rod and having the slide frame attached thereto. , And a screw rod drive device that rotationally drives the screw rod. "

Since the segment assembling apparatus of the present invention is constituted by such technical means, when gripping a segment carried into a predetermined place, the circumferential turning means and the radial moving means are appropriately driven to operate the gripping means. By adjusting each position in the shield body circumferential direction and the shield body radial direction, and by rotating the screw rod with the screw rod drive device, the female screw member is screw-fed and moved, whereby the slide attached to the female screw member is moved. The frame can be moved in the axial direction of the shield body while being supported by the support member, and the radial movement means can be moved in the axial direction of the shield body together with the gripping means. After positioning the grip means in this manner, the segment is gripped by the grip means. Since the device of the present invention thus attaches the support member of the axial moving means to the turning portion of the circumferential turning means and moves the gripping means together with the radial moving means, it is similar to the conventional device. It is possible to increase the moving distance in the axial direction of the shield body. When the shield body axial movement distance is increased in this way, in the conventional device, the axial movement means is configured by using a hydraulic cylinder that expands and contracts, so that the captain of the axial movement means In the apparatus of the present invention, the axial moving means is provided with the screw rod, the female screw member, and the screw rod driving device, whereas the device moves in the axial direction. The PIC's captain is constant and does not increase during operation.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be clarified by describing concrete examples showing how the present invention is actually embodied with reference to FIGS. 1 to 9. To do. FIG. 1 is a front view showing a state in which a segment assembly device of a first embodiment of the present invention is installed in a shield body, FIG. 2 is a sectional view taken along line II-II of FIG. 1, and FIG. 3 is a segment of the present invention. 4 is a sectional view taken along line III-III of FIG. 1 showing only the assembling apparatus.
FIG. 5 is a detailed view of a main part of a segment assembling device according to a first embodiment of the present invention, and FIG. 5 is a detailed view of a main part of a conventional segment assembling device for explaining the effect thereof in comparison with the device of FIG. FIG. 6 is a detailed view of a main part of a segment assembling apparatus according to a second embodiment of the present invention, and FIG. 7 is a detailed view of a main part of a segment assembling apparatus according to a third embodiment of the present invention. 9 is a vertical cross-sectional view showing a state in which the segment assembling apparatus according to the fourth embodiment of the present invention is installed in the shield body, and FIG. 9 is a cross-sectional view taken along line IX-IX of FIG. All of the segment assembling apparatuses of the first to third embodiments of the present invention are, similarly to the above-described conventional segment assembling apparatus, circumferential direction turning means for turning the segment in the circumferential direction of the shield body, and the circumferential direction turning means. An axial moving means attached to the turning part of the direction turning means for moving the segment in parallel with the shield body axial direction; a radial moving means supported by the axial moving means for moving the segment in the shield body radial direction; And a gripping means attached to the directional moving means for gripping the segment, thereby allowing the axial moving means to have a large moving distance. The structure is the same as the conventional device.

First, the first aspect of the present invention will be described with reference to FIGS.
Explaining the segment assembly apparatus of the embodiment, 1
Has a cutter (not shown) in its front part, and its rear part is propelled by a shield jack (not shown) while taking a reaction force with the existing segment 21, and 2 is along the inner circumference of this shield body 1. The ring girders 4 provided to increase the strength of the eclectic ring are erector rings rotatably attached to the ring girder 2 via bearings 3. Similar to the erector ring 41 of the conventional device, the erector ring 4 can be driven by a rotary drive device such as a hydraulic motor (not shown), and the eclectic ring 4 and the rotary drive device rotate in the circumferential direction. Make up. Reference numeral 5 denotes an arm as a supporting member which is attached to the eclectic ring 4 which is a revolving portion of the circumferential revolving means and extends in the axial direction of the shield body, and 6 is supported by the arm 5 so as to be movable in the axial direction of the shield body and moves in a radial direction described later. A slide frame equipped with means, 7 is a front-back drive mechanism which will be described in detail later for moving the slide frame back and forth in the axial direction of the main body, and 8 is attached to the arm 5 and slidably guides the guide portion of the slide frame 6. Is a linear bearing that extends in the axial direction of the shield body. A pair of arms 5 are symmetrically arranged at a rear portion of the elector ring 4 at intervals in the horizontal direction, and a pair of the slide frame 6 and the front-rear drive mechanism 7 are provided so as to correspond to these arms 5. . Each slide frame 6 is driven by each front-rear drive mechanism 7 to drive each arm 5
The arm 5, the slide frame 6, and the front-rear drive mechanism 7 constitute an axial movement means while being supported by the arm 5 and the front-rear drive mechanism 7 via a linear bearing 8 provided on each of them.

Reference numeral 9 is a rod slidably fitted in each slide frame 6 in the radial direction of the shield body, and 10 is a suspension beam having a substantially U-shaped cross section and both ends thereof being attached to each rod 9. 11, the cylinder part is attached to the slide frame 6, and the piston rod part is the hanging beam 10.
A hydraulic cylinder as a radial drive attached to the. A pair of rods 9 are provided corresponding to the pair of slide frames 6, and a pair of hydraulic cylinders 11 are provided corresponding to the pair of rods 9. Each hydraulic cylinder 11 can move the suspension beam 10 in the radial direction of the shield body while sliding each rod 9 with respect to the slide frame 6 by the expansion and contraction thereof.
The suspension beam 10 and the hydraulic cylinder 11 constitute a radial moving means. Reference numeral 12 is a holding frame attached to the suspension beam 10 for holding the segment, and 13 is a linear frame similar to the linear bearing 8 extending in the left-right direction of the shield body 1 so as to slidably guide the holding frame 12. Bearing, 20 is this gripping frame 12
An arc-shaped assembling segment for gripping and assembling at 21 is an existing segment that is already assembled along the peripheral wall of the underground mine. Linear bearing 1
A pair of front and rear parts 3 are attached to the upper surface of the holding frame 12 and slidably fitted to the guide portion on the lower surface of the suspension beam 10. In the present embodiment, the gripping frame 12 is supported by the suspension beam 10 via such linear bearings 13 and can be moved a minute distance in the left-right direction by driving a driving device (not shown). Can be achieved to some extent by the circumferential turning means, and thus the left and right moving means are not always indispensable for the segment assembling apparatus. The gripping frame 12 is, in this embodiment, an assembly segment 20.
An arc-shaped outer peripheral surface abutting portion 14 that abuts the inner peripheral surface of
A known segment gripping mechanism (not shown) for gripping the assembling segment 20 in its abutting portion in abutting state is built therein. The gripping means for gripping the assembling segment 20 has various mechanisms, and an appropriate one may be selected from existing means according to the structure of the assembling segment 20.

Since the segment assembling apparatus of the first embodiment has such a structure, when the assembling segment 20 carried in to a predetermined place is gripped, the electret ring 4 is swiveled as appropriate to the hydraulic cylinder. 11 is expanded and contracted to adjust the positions of the grip frame 12 in the circumferential direction of the shield body and the radial direction of the shield body, and the slide frame 6 is supported by the arms 5 attached to the erector ring 4 by the drive of the front-rear drive mechanism 7. While moving in the axial direction of the shield body, the radial moving means such as the rod 9, the suspension beam 10, the hydraulic cylinder 11 and the like are moved rearward in the axial direction of the shield body together with the gripping frame 12. After positioning the gripping frame 12 in this way, when the necessary operation for gripping the assembly segment 20 is performed, the assembly segment 2
0 can be gripped by the gripping frame 12. In the segment assembling apparatus of this embodiment, the arm 5 of the axial moving means is thus attached to the erector ring 4, which is the turning portion of the circumferential turning means, so that the grip frame 12 is moved together with the radial moving means. Therefore, as in the case of the conventional device, the movement distance in the axial direction of the shield body can be increased. In the segment assembling apparatus of the first embodiment, in the type of apparatus having such characteristics, the axial moving means, in particular, the front-rear drive mechanism 7 described in detail below is used.
The greatest feature is that the machine length when operating the axial moving means can be shortened as compared with the conventional one by using the above.

Therefore, the front-rear drive mechanism 7, which is the main part of the apparatus of this embodiment, will be described in detail with reference to FIGS. 4 and 5. In these drawings, 22 is a screw rod driving device such as a hydraulic motor or an electric motor for rotating a screw rod 25, which will be described later.
Is a coupling for transmitting the rotational force of the screw rod drive device 22 to the screw rod 25, 24 is a bearing attached to the above-mentioned arm 5, 25 is a bearing rod supported by the bearing 24 and having a male screw engraved on the outer periphery. Reference numerals 26 and 26 are ball screws as female screw members on which the slide frame 6 is attached by engraving a female screw to be screwed on the screw rod 25. Screw rod drive device 2
2 is attached to a portion that is swivel-displaced by the drive of the circumferential swiveling means, such as the erector ring 4 or the arm 5.
In this specific example, it is arranged coaxially with the screw rod 25 via the coupling 23. The bearing 24 is a pair of arms 5.
Two inside each of them are attached at front and back intervals,
Both ends of the screw rod 25 are supported. The screw rod 25 is rotatably attached to the inside of each arm 5 so as to extend in the axial direction of the shield body via the bearing 24. The ball screw 26 is a threaded rod 2 that is in a threaded relationship with the ball screw 26.
The slide frame 6 is non-rotatably attached to the slide frame 6 so as not to rotate together with the rotation of the rotation 5. Since the front-rear drive mechanism 7 according to this embodiment has such a structure, the screw rod drive device 22 drives the screw rod 25.
When is driven to rotate, the non-rotatable ball screw 26 is screw-fed by the rotation of the screw rod 25 to move forward and backward, and the slide frame 6 can be moved forward and backward accordingly. That is, the front-back drive mechanism 7 includes the screw rod 25.
The slide frame 6 is configured to move along the screw rod 25 in parallel with the axis of the shield body by a so-called screw feed mechanism including a ball screw 26 and a ball screw 26.

A front-rear drive mechanism 7 relating to the first embodiment.
4 and FIG. 5, the total length of is compared with the total length of the hydraulic cylinder 47 for axial drive in the conventional segment assembly apparatus, and its effect is clarified. First, the overall length of the front-rear drive mechanism 7 will be described with reference to FIG.
As shown in FIG. 4, when the sliding distance of the slide frame 6, that is, the moving stroke of the ball screw 26 is S and the machine length of the screw rod drive device 22 is U, the total length L _A of the front-rear drive mechanism 7 is given by the following equation. Can be represented. L _A = S + U + α In the above equation, α is a small-length addition such as a coupling 23 and a bearing 24 which are additionally provided with the installation of the screw rod drive device 22 and the screw rod 25, which are the main components. The total length α is the total length of the target parts, and the ratio of the length α to the total length L _A is extremely small unless the moving stroke S is small.

Next, the overall length of the hydraulic cylinder 47 for axial drive in the conventional segment assembly apparatus will be described with reference to FIG. 5. Now, as shown in FIG.
If the sliding distance of 6 or the moving stroke of the hydraulic cylinder 47 is S, the hydraulic cylinder 47 requires at least a length of S for both the piston rod portion 47a and the cylinder portion 47b. The total length L _B can be expressed by the following equation. L _B = 2 × S + β In the above equation, β is the total length of the portions of the piston rod portion 47a and the cylinder portion 47b of the hydraulic cylinder 47 other than the portion directly required to secure S. That is, the total length β is extremely small like the ratio α of the length to the total length L _B unless the moving stroke S is very small.

Overall length L when the hydraulic cylinder 47 extends
_B is when the moving stroke S is shorter than the total length L _A of the front-back drive mechanism 7 (depending on the required moving thrust, about 500 m
However, since the total length L _B of the hydraulic cylinder 47 is approximately twice the movement stroke S as is clear from the above equation, if the movement stroke S is increased, According to the total length L of the front-rear drive mechanism 7
It is significantly longer than _A. Therefore, according to this embodiment, the axial moving means is attached to the turning portion of the circumferential turning means so that the axial moving means increases the axial movement distance of the shield body. In the above, there is provided a segment assembling apparatus capable of shortening the machine length when operating the axial moving means as compared with the conventional apparatus. As a result, when other devices such as a screw conveyor and a work deck are installed in the shield body, the arrangement of the devices is not significantly restricted as in the conventional device.

Assuming that the shield machine according to the first embodiment is a continuous machine shield machine, for example, in the case of assembling segments at the position indicated by reference numeral 20b in FIG. After digging the width of one ring of the segment to secure the assembly space so that the assembly can be performed, the shield jack at the position where the segment is to be assembled is contracted and the segment is assembled there while the segment is not assembled. The shield jack is pushed against the existing segment to continue the propulsion. After assembling the segment in this way, the shield jack is also pressed against the newly assembled segment to continue the propulsion. Since the shield machine of the continuous excavation method advances the excavation with such a method,
The assembly of the segment by the erector first starts at the position of the frontmost working space 20b, but the assembly position shifts backward relative to the shield body 1 as the excavation proceeds, and finally, In the relative relationship with the shield main body 1, it may come to a position indicated by a chain line 20a. For this reason, the erector needs to be able to move in the axial direction of the shield body by the width of one ring of the segment, and as a result, the moving distance thereof is more than twice that used in a normal shield machine. . Therefore, when the segment assembling apparatus according to the first embodiment is used in such a shield excavator of the continuous excavation system, the machine length at the time of operating the axial moving means can be remarkably shortened as compared with the conventional apparatus, which is extremely advantageous. You can say that. Also,
It is also advantageous over the conventional device when using an axially moving type segment such as the aforementioned wedge-shaped segment which requires a large moving distance in the axial direction of the shield body.

Next, the segment assembling devices of the second and third embodiments of the present invention will be described with reference to FIGS. 6 and 7. Both of the devices of both embodiments are screw rods. Two
5, the arrangement of the screw rod drive device 22 in the device of the first embodiment is changed so that the screw rod drive device 22 is separated from the screw rod 25 via a transmission mechanism. The upper and lower drive mechanisms 7
The total length of the above can be shortened as compared with the case where the screw rod driving device 22 is arranged on the same axis as the screw rod 25. That is, in the device of the second embodiment, a drive spur gear 31a is provided on the output side of the screw rod drive device 22, and a driven spur gear 31b meshing with the spur gear 31a is provided at the front end of the screw rod 25. The screw rod drive device 22 is arranged on the front end side of the screw rod drive device 22 in parallel with the screw rod 25. With such an arrangement, the screw rod drive device 22 can be prevented from projecting forward from the front end portion of the screw rod 25, and the entire length of the front-rear drive mechanism 7 can be set to be larger than that of the device of the first embodiment by a screw. It can be shortened by the length of the rod driving device 22. In the device of the third embodiment, a drive bevel gear 32a is provided on the output side of the screw rod drive device 22, and the bevel gear 32a is provided at the front end of the screw rod 25.
A driven bevel gear 32b that meshes with is provided, and the screw rod drive device 22 is arranged obliquely from the screw rod 25 side toward the front end side thereof. With this arrangement, like the device of the second embodiment, the screw rod drive device 22 can be prevented from protruding from the front end portion of the screw rod 25, and the overall length of the front-rear drive mechanism 7 can be shortened. You can Therefore, according to the second specific example and the third specific example, it is possible to obtain the segment assembling apparatus having a great effect of shortening the machine length when the axial moving means is operated. In the device of the second embodiment, the screw rod drive device 22 is arranged obliquely from the side of the screw rod 25, but the screw rod drive device 22 is attached to the screw rod 25 via an appropriate transmission mechanism. You may make it orthogonally cross, and the point is, the screw rod drive device 22,
The entire length of the front-rear drive mechanism 7 may be shortened as compared with the device of the first embodiment by disposing the screw rod 25 on a separate shaft via the transmission mechanism.

The segment assembling apparatus of the fourth embodiment of the present invention will be described with reference to FIGS. 8 and 9. The apparatus of the present embodiment is a pair of supporting members as the supporting members in the apparatus of the first embodiment. The arm 5 is changed to a single arm having a ring-shaped cross section arranged at the center of the shield body. That is, an arm that is attached to the erector ring 4 and that supports the slide frame 6 is formed by a ring arm 35 having a diameter similar to the inner diameter of the erector ring 4, and the front end thereof is formed.
I am trying to attach it to. In that case, unlike the arm 5 of the first embodiment, the ring arm 35 is arranged inside the pair of slide frames 6,
Each slide frame 6 moves back and forth while being supported by one ring arm 35 via a linear bearing 8 provided on each slide frame 6. Along with this, both ends of the hydraulic cylinder 11 for attaching the cylinder portion to the slide frame 6 and the both ends of the suspension beam 10 attached to the piston rod portion of the hydraulic cylinder 11 are arranged so as to come to the outside of the slide frame 6. ing. Of course, the front-rear drive mechanism 7 has the same structure as that described in detail in the first embodiment.
In this specific example, a scaffold for performing backfilling work into a segment, additional work such as tightening work, and the like is formed.
As shown in, the work deck 33 is installed immediately behind the segment assembling apparatus. In addition, the assembly segment 20
Is positioned with respect to the existing segment 21 and the bolt holes of both segments 20 and 21 are aligned with each other, and then a bolt fastening device 34 is attached to the holding frame 12 so that bolts can be inserted into both bolt holes and fastened. It is attached. The apparatus according to the present embodiment includes an assembly segment 2 which is gripped by a grip frame 12 by an assembling segment 20, a circumferential turning means, an axial moving means, and a radial moving means.
A segment automatic assembly apparatus capable of automatically assembling segments by performing positioning of 0 to the existing segment 21 and bolt connection of both segments 20 and 21 by the bolt fastening device 34 by automatically controlling by a control mechanism (not shown). Is.

By the way, in the segment assembling apparatus of the type in which the axial moving means is attached to the turning portion of the circumferential turning means, the moving distance in the axial direction of the shield body by the axial moving means is increased. Therefore, if the arm is as shown in the first embodiment, the arm bends when the slide frame 6 is moved backward and the moving distance is increased, and the hanging beam 10 and the gripping frame 12 are provided. The position of may shift from the planned position. That is, even if the turning position of the elector ring 4 and the amount of expansion and contraction of the hydraulic cylinder 11 are the same, the radial position and posture of the suspension beam 10 and the gripping frame 12 are determined depending on whether the slide frame 6 is largely moved rearward or not. There is a subtle difference. As a result, it becomes difficult to perform operations such as gripping, positioning, and bolt fastening of the assembly segment 20 by the segment assembly device, and in particular, the device of the present embodiment, which requires accurate control of the position and posture of the assembly segment 20. In such a segment automatic assembly apparatus, its operation is hindered. For this reason, in the device of this embodiment, the ring arm 35 is adopted as an arm as a support member for supporting the slide frame 6,
This enhances the rigidity and reduces the deflection of the arm. In addition, by constructing the axial direction moving means by using the same front-back drive mechanism 7 as already described in detail in the first embodiment, as shown in FIG. The work deck 33 can be segmented by placing the work deck 33 on the top and carrying the grip frame 12 backward by a large amount by moving more than one ring and gripping it, and shortening the machine length when operating the axial moving means as compared with the conventional one. It can be installed near the assembly site. Therefore, according to the fourth embodiment, the axial movement means is attached to the turning portion of the circumferential turning means,
In the segment assembly device of the type in which the moving distance in the axial direction of the shield body by the axial moving means is increased,
It is possible to obtain the segment assembling apparatus that exhibits the same effect as that of the first embodiment and that can accurately grasp and position the assembling segment 20. Further, in this specific example, since the ring arm 35 has the same diameter as the inner diameter of the elector ring 4, the region in which the devices can be arranged in the shield body 1 is different from the first specific example. Even when the screw conveyor is installed in the shield body 1, the arrangement is not significantly restricted as in the conventional device.

In the segment assembling apparatus of the first embodiment and the fourth embodiment, a pair of slide frames 6 are provided on the left and right, and a pair of front and rear drive mechanisms 7 are provided on the left and right corresponding to each of them.
Therefore, both front-rear drive mechanisms 7 need to be driven so that the left and right slide frames 6 are moved in the same amount. Therefore, in these embodiments, a servomotor is used as the screw rod drive device 22, and the servomotor controls the rotation speed of the servomotor so that the left and right slide frames 6 are moved by the same amount. Also,
In the case where the segment assembling apparatus is an automatic assembling apparatus as in the fourth embodiment, it is necessary to control the position when moving the slide frame 6 in the axial direction of the shield body. When a mechanism using a servo motor is used, the position of the slide frame 6 can be controlled by controlling the number of revolutions of the servo motor by the servo mechanism, and a multifaceted effect can be exhibited. A pair of arms 5 and a ring arm 35 are used in the first and fourth specific examples as a supporting member attached to the elector ring 4 and extending in the axial direction of the shield body. The role of this supporting member is important. Is to support the slide frame 6 to which the radial direction moving means is attached so as to be movable in the axial direction of the shield body, so that the structure and type thereof are not limited as long as they are suitable for this. In the first embodiment and the fourth embodiment, the rod 9 is used as a guide for the radial movement by the radial movement means.
It may be a linear bearing, and its structure or type does not matter.

[0024]

As is apparent from the above description, according to the present invention, the axial moving means for supporting the radial moving means and translating the segment in the axial direction of the shield body is provided in the turning portion of the circumferential turning means. In the case of constructing a segment assembling device of the type to be attached, "a supporting member which is attached to the turning portion of the circumferential turning means and extends in the axial direction of the shield body, and a radius which is supported by the supporting member so as to be movable in the axial direction of the shield body are provided. A slide frame having a direction moving means attached, a screw rod having a male screw attached to a support member so as to be rotatable so as to extend in the shield body axial direction, and a slide frame having a female screw screwed to the screw rod are attached. By providing a female screw member and a screw rod drive device for rotationally driving the screw rod, the axial direction moving means is configured. " The captain during operation of the line-direction moving means, the segment assembly device is obtained which can be shorter than the prior art. When the present invention is carried out, if the structure of claim 3 is adopted, even if the machine length at the time of operating the axial moving means is shortened from the conventional one,
A segment assembling apparatus having a more remarkable shortening effect can be obtained. When implementing the present invention, if the structure of claim 5 is adopted, at least the effect of adopting the structure of claim 1 of the claim is exhibited, and the assembling segment is It is possible to obtain a segment assembly device capable of accurately grasping, positioning, and the like. When the present invention is carried out, if the structure of claim 6 is adopted, at least the effect obtained when the structure of claim 1 is adopted is obtained. It is possible to obtain a segment assembling device that can be provided with a pair and can be moved so that the moving amounts of the respective slide frames are equalized.

[Brief description of drawings]

FIG. 1 is a front view showing a state in which a segment assembling apparatus according to a first embodiment of the present invention is installed on a shield body.

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

3 is a view of FIG. 1 showing only the segment assembling apparatus of the present invention;
It is a III-III sectional view taken on the line.

FIG. 4 is a detailed view of a main part of the segment assembling apparatus according to the first embodiment of the present invention.

FIG. 5 is a detailed view of a main part of a conventional segment assembly device for explaining the effect compared with the device of FIG.

FIG. 6 is a detailed view of a main part of a segment assembling apparatus according to a second embodiment of the present invention.

FIG. 7 is a detailed view of essential parts of a segment assembly device according to a third embodiment of the present invention.

FIG. 8 is a vertical cross-sectional view showing a state in which a segment assembling apparatus according to a fourth embodiment of the present invention is installed in a shield body.

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

FIG. 10 is a vertical cross-sectional view of a conventional segment assembly device.

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

[Explanation of symbols]

1 Shield body 4 Erectoring 5 arms 6 slide frames 7 Front-back drive 8 linear bearings 9 rod 10 hanging beam 11 hydraulic cylinder 12 gripping frame 20 Assembly segment 21 Existing segment 22 Screw rod drive 23 Coupling 24 bearing 25 screw rod 26 ball screw 31a, 31b Spur gears 32a, 32b bevel gears 35 ring arm

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Ken Kamei 650 Jinrachi-cho, Tsuchiura-shi, Ibaraki Hitachi Construction Machinery Co., Ltd. Tsuchiura factory (72) Inventor Takami Kusagi 650, Kintate-cho, Tsuchiura-shi, Ibaraki Hitachi Construction Machinery Co., Ltd. Company Tsuchiura factory (56) References JP-A-4-327699 (JP, A) Actual opening 3-58400 (JP, U) Actual opening 6-60698 (JP, U) Actual opening Sho 50-15526 (JP , U) Jitsuko Sho 53-42990 (JP, Y2) (58) Fields investigated (Int.Cl. ⁷ , DB name) E21D 11/40

Claims (6)

(57) [Claims] 1. A circumferential direction turning means for turning a segment in a circumferential direction of a shield body, an axial moving means attached to a turning part of the circumferential turning means for moving a segment in parallel with an axial direction of the shield body, and the axial direction. In a segment assembly device installed in a shield machine, comprising a radial moving means supported by the moving means for moving the segment in the shield body radial direction, and a gripping means attached to the radial moving means for gripping the segment, A support member attached to the turning portion of the circumferential turning means and extending in the axial direction of the shield body, a slide frame supported by the support member so as to be movable in the axial direction of the shield body and having a radial moving means attached, and a shield having a male screw A screw rod rotatably attached to the support member so as to extend in the axial direction of the main body; An internal thread member having an internal thread to be screwed into the threaded rod and having a slide frame attached thereto, and a threaded rod drive device for rotationally driving the threaded rod are provided to constitute an axial direction moving means. Segment assembly equipment. 2. A screw rod drive device for rotationally driving the screw rod is arranged on the same axis as the screw rod.
Segment assembly equipment. 3. A screw rod driving device for rotating the screw rod is arranged on a different shaft from the screw rod through a transmission mechanism, so that the screw rod driving device is arranged on the same shaft as the screw rod. 2. The segment assembling apparatus according to claim 1, wherein the total length of the axial moving means is shortened. 4. The segment assembly device according to claim 1, wherein the support member is a pair of arms arranged at intervals in the radial direction of the shield body. 5. The segment assembling apparatus according to claim 1, wherein the support member is one arm having a ring-shaped cross section and arranged at the center of the shield body. 6. A pair of slide frames are provided, and a pair of screw rods, a female screw member and a screw rod drive device are provided correspondingly thereto, and a servo motor is used for the screw rod drive device to control the number of revolutions thereof, thereby providing both slides. The segment assembly device according to claim 1, claim 2, claim 3, claim 4, or claim 5, wherein the movement amounts of the frames are made equal.