JP2002106296A - Tunnel support assembling device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently assemble a ringed tunnel support by means of a support segment holder revolvable along the inner circumference of a skin plate, by smoothly and accurately feeding and introducing a plurality of tunnel support segments successively to a support segment assembly position in the skin plate. SOLUTION: A ring body is arranged within a skin plate, and a support segment holder is mounted for revolution along the ring body. Along the revolution locus of the holder, a plurality of support segment supporting rollers are arranged in an upper half circumference in the skin plate at short intervals. A plurality of support segment carrying rollers are arranged on the inner bottom of the skin plate in an opposed relation to the support segment supporting rollers. The space over and along the carrying rollers is used as an assembly position. Every time a tunnel support segment fed and introduced to the assembly position is held by the holder and moved circumferentially over a constant angle, the next tunnel support segment is successively coupled to the previous tunnel support segment in a trailing relation, which operation is repeated to assemble a ringed tunnel support supported on the support segment supporting roller.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for assembling a tunnel support body for supporting a rock excavation wall surface excavated by a tunnel excavator.

[0002]

2. Description of the Related Art When a tunnel is excavated by a tunnel excavator, the excavated tunnel wall surface may fall off or fall down. A ring-shaped support body is assembled by connecting a plurality of support members made of H-shaped steel along the tunnel, or a plurality of tunnel support members formed of a rectangular frame curved in an arc shape in a skin plate of a tunnel excavator. After assembling a ring-shaped tunnel support body by connecting the tunnel support bodies to each other, the tunnel support body is sent out from the inside of the skin plate to the tunnel wall surface side to expand the diameter, thereby supporting the tunnel wall surface.

[0003] As a device for assembling a tunnel support body as described above, a swivel ring body 31 is rotatably supported in a skin plate 30 of a tunnel excavator as shown in FIG. An erector device is provided in which a support material gripping tool 32 is fixed and a plurality of support material support fittings 33 are erected at predetermined intervals in the circumferential direction on the outer peripheral surface of the revolving ring body 31.

[0004] To assemble the ring-shaped tunnel支保body A by erector apparatus, first, arcuate revolving ring after one pre-supports a ₁ curved were gripped by pre-supports gripping member 32 to the body 31 the circumferentially rotated by a predetermined angle is moved in the circumferential direction along the inner peripheral surface of the skin plate 30 of the pre-supports a _1, then the following pre-supports a ₂ on the side end surface of the pre-supports a ₁ After the connection, the turning ring body 31 is again rotated in the same direction by a fixed angle, and the inner surface of the support material a ₂ is supported by the support material support bracket 33 standing upright on the outer peripheral surface of the turning ring body 31, By repeating this operation and rotating the swivel ring body 31 substantially one turn, a ring-shaped tunnel support body A in which a plurality of support materials a are connected along the outer peripheral surface of the swirl ring body 31 is assembled.

[0005]

However, in the above-described apparatus for assembling the tunnel support body, a plurality of support material support brackets 33 which rotate integrally with the revolving ring body 31 are provided on the outer peripheral surface of the revolving ring body 31. Since the support material a is supplied to the assembling position on the inner bottom surface of the skin plate 31, the support material support bracket 33 located on the lower peripheral side of the revolving ring body 31 faces the inner bottom surface of the skin plate 30. As a result, the supporting member 33 is not protruded, and the assembling material of the supporting member 33 may be prevented from being carried in. There is a problem that it becomes impossible to carry the material a to a predetermined assembly position.

For this reason, the support member support bracket 33 is moved forward and backward in the radial direction of the revolving ring body 31 by a screw mechanism or the like.
It is necessary to provide a means for allowing refraction in the length direction of the tunnel, and when the structure becomes complicated and the inner peripheral surface of the support member a is supported, the support member a is supported on the inner peripheral surface each time. An operation for bringing the metal fitting 33 into contact is required, and there is a possibility that work efficiency may be reduced.

Further, the support member support bracket 33 requires an adjustment operation or the like for supporting the inner peripheral surface of the support member a as described above.
The number of standing members 31 on the outer peripheral surface is made as small as possible, and is usually adjusted to the number of support members a. Therefore, when assembling the ring-shaped tunnel support body A with the plurality of support materials a while rotating the swivel ring body, the support material a on the free end side is used.
Is bent outward from the joining and connecting portions of the support members, and the tip (lower end) of the supporting member strikes the inner peripheral surface of the skin plate 30, which causes a problem that the assembling operation cannot be performed smoothly.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and can smoothly supply and carry a support material to a support material assembling position, and can also efficiently join and connect the support members. It is an object of the present invention to provide a tunnel support body assembling apparatus capable of accurately and efficiently assembling a ring-shaped tunnel support body without causing a body to bend.

[0009]

In order to achieve the above-mentioned object, a tunnel support body assembling apparatus of the present invention provides a ring-shaped tunnel support body by connecting a plurality of circularly curved tunnel support members. A tunnel support body assembling apparatus for assembling, comprising: a ring body, a tunnel support material gripper mounted on the ring body, and the ring body or the tunnel support material gripper mounted on the ring body in a circumferential direction. Turning support means for turning and driving, and support material support means for receiving the inner peripheral surface of the tunnel support material on the upper peripheral side of the tunnel support body assembled in a ring shape, the support material support means comprising The structure is such that it is attached to an immovable part near the body.

[0010] In the above-mentioned tunnel support body assembling apparatus, the support material supporting means comprises a roller rotatably supported on a shaft long in the tunnel axis direction.

Further, the invention according to claim 3 relates to an immovable portion to which the support member supporting means is attached, wherein the immovable portion is an inner peripheral surface of a skin plate of a tunnel excavator or an inner surface of the skin plate. It is characterized in that it is a rib fixed to the peripheral surface or a beam body extending rearward from a support member rotatably supporting a cutter plate of a tunnel excavator.

According to a fourth aspect of the present invention, a support material placing member for placing an outer peripheral surface of a tunnel support material facing a lower portion of the support material support means is provided below the immovable portion. It is characterized by becoming. It is desirable that this support material placing member also be composed of a roller rotatably supported on a shaft that is long in the tunnel axis direction, similarly to the above-mentioned support material supporting means.

[0013]

[Function] A tunnel support material that is curved in an arc shape in a direction along a tunnel excavation wall surface is supplied to an assembling position on an inner bottom surface of a skin plate or a bottom surface of a tunnel near a lower portion of a ring body, and is attached to the ring body. The supporting member gripping tool is moved to a position facing the inner surface of the tunnel supporting material, and a predetermined portion of the inner surface of the tunnel supporting material is gripped by the supporting material gripping tool.

At this time, the support means of the ring-shaped tunnel support body assembled by connecting a plurality of tunnel support materials is fixed to the inner peripheral surface of the skin plate of the tunnel excavator or the inner peripheral surface of the skin plate. A rib or a stationary member such as a beam body extending rearward from a support member rotatably supporting a cutter plate of a tunnel excavator, and disposed above the assembling position to support the tunnel. Since the inner peripheral surface of the tunnel support member on the upper peripheral side of the body is received, the support means is disposed at an immovable point which does not interfere with the assembly position of the tunnel support material. The structure makes it possible to smoothly supply and carry in the tunnel support material to the assembling position.

The above-mentioned tunnel support material gripped by the support material gripper is lifted on the movement locus of the support material gripper by rotating the support material gripper by a predetermined angle in the circumferential direction. At the same time, a part of the inner peripheral surface reaches the support means provided on one side of the immovable portion and is supported by the support means. Next, the next tunnel support material is supplied to the assembling position, the opposite end surfaces of the tunnel support material are joined together and connected integrally by bolts, and then the support material gripper is turned again by a predetermined angle in the same direction. By moving the tunnel support material, the leading-side tunnel support material is moved onto the support means on the upper peripheral side of the immovable portion.

Similarly, each time a plurality of tunnel support members are sequentially connected, the support member gripper is turned by a predetermined angle in the circumferential direction, thereby turning the inner peripheral surface of the skin plate or the inside of the tunnel. Assemble a ring-shaped tunnel support along the peripheral surface.

The support member supporting means fixed to the immovable portion does not support the inner surface of the tunnel support member when the tunnel support member is supplied to the assembling position, but the support member gripper pivots in the circumferential direction. When the tunnel support material moving integrally with the support material gripping tool reaches the position where the support material support means is provided, the tunnel support material is disposed so as to support the downward or obliquely downward inner surface of the tunnel support material. Since it is sufficient to do so, there is no influence on the assembling work of the tunnel support material.

Further, the support member supporting means is constituted by a roller rotatably supported on a shaft long in the tunnel axis direction, and this roller supports two or more inner surfaces of one support member. By arranging in such a manner, it becomes possible to join the adjacent tunnel support materials and to support the support material stably without applying an excessive bending force to the connecting portion, and to provide a ring-shaped tunnel support body with high accuracy. Can be assembled.

Further, by placing the mounting member of the tunnel support member below the immovable portion where the support member support means is disposed, that is, at the assembly position of the tunnel support member, the mounting member can be moved to the assembly position. The tunnel support material to be supplied can be supported at a predetermined position in a stable posture, and the work of gripping by the support material gripping tool and the joining and connecting work of the tunnel support materials can be performed efficiently.

The supporting member mounting member is formed of a roller rotatably supported on a shaft long in the tunnel axis direction, similarly to the above-mentioned supporting member supporting means, and the roller is formed along a curved surface of the tunnel supporting member. By arranging them at appropriate intervals in the direction, not only can the outer surface (lower surface) curved in a convex arc shape of the tunnel support material supplied on these rollers be accurately supported, but also the above-mentioned support can be provided. By rotating the material holding tool, the tunnel support material can be smoothly moved in the circumferential direction while rolling the roller, and the ring-shaped tunnel support body can be efficiently assembled. In addition, the support material holding tool may be fixed to the ring body, and may be moved integrally with the ring body by rotating the ring body, or the ring body may be fixed and the fixed ring body may be fixed. The supporting material gripper may be movably mounted on the support member.

[0021]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a first embodiment of the present invention; FIG.
Is a cylindrical skin plate of a tunnel excavator, and a proper position of the inner bottom surface curved in a concave arc shape is used as an assembling position 2 of the tunnel support material a.
An outer peripheral surface of an annular rib 3 is integrally fixed to an inner peripheral surface of the skin plate 1 at a front portion of the ring plate 3. In addition, a support material gripping tool 5 is integrally mounted at an appropriate position on the rear surface of the ring body 4. Furthermore, the ring body 4
A plurality of support material support means 6 are arranged at predetermined intervals in the circumferential direction on the outer periphery concentric with the ring body 4 at a small interval from the outer peripheral surface of.

The ring body 4 is supported by a plurality of guide rollers 8 whose inner peripheral surface is rotatably supported concentrically on the rear surface of the rib 3 so as to be rotatable concentrically. It is configured to pivot on the guide roller 8. The turning drive means 9 includes a drive motor 9a fixed to an appropriate position of the rib 3, a small gear 9b fixed to a rotating shaft of the drive motor 9a, and an inner gear formed on an inner peripheral surface of the ring body 4. And a small gear 9b.
The ring body 4 is rotated by the rotation of the drive motor 9a by meshing with the ring 9c.

The supporting member gripping tool 5 integrally attached to the ring body 4 is attached to a rear end of a fixed length arm member 10 having a front end surface integrally fixed to a rear surface of the ring body 4. , Are attached to the inner peripheral surface side of the skin plate 1. The arm member 10 projects horizontally rearward from the rear surface of the ring body 4 to a position above the support material assembling position 2. Therefore, the support material gripper 5 is attached to the support material assemble position 2. Is configured so as to pivot above. Note that the support material gripping tool 5 includes a plurality of tunnel support materials a ₁ , a ₂ , a _3, ... Assembled on the ring-shaped tunnel support body A.
In, and is configured to grip detachably the first hardware are projected only on the inner central portion of the tunnel pre-supports a ₁ 7 (shown in FIG. 5).

On the other hand, on the outer periphery at a small distance from the outer peripheral surface of the ring body 4, the support material supporting means 6 disposed on the upper peripheral portion on the concentric circle with the ring body 4 is a tunnel assembled in a ring shape. It is configured to support the inner surface of the upper peripheral portion of the support body A, and is an immovable portion near the ring body 4, that is, in FIG.
It is attached to the rear surface of the annular rib 3 which is fixed to the rib.

The support member supporting means 6 is provided on the rear surface of the long shaft 6b fixed to the rear surface of the rib 3 and protruding horizontally from the rear surface in the direction of the tunnel axis. A roller 6a to be supported is rotatably mounted. A plurality of the rollers 6a mounted on the shaft 6b are arranged at regular intervals in a circumferential direction on an arc along the curved inner surface of the ring-shaped tunnel support A. are doing.

Since the roller 6a constituting the support member supporting means 6 has its central axis 6b protruding rearward along the outer peripheral surface of the ring body 4, the tunnel support 6 constituting the ring-shaped tunnel support body A is provided. Even if an attempt is made to support the inner surface on the rear end side from the central portion of the material a, it cannot be supported since it intersects with the turning locus of the support material gripping tool 5, and therefore, the turning locus of the support material gripping tool 5 The inner side of the front end portion of the tunnel support member a is supported on the near side of the above, but the inner side surface of the rear end portion of the tunnel support member a may be supported.

That is, as shown in FIG. 3, the front end of the horizontal portion of the L-shaped bracket 6 c is fixed to the inner peripheral portion of the rear surface of the annular rib 3, and this horizontal portion is Through the inside of the turning trajectory of the support material gripping tool 5 and project rearward to a position reaching the inside of the rear end inner surface of the tunnel support material a, from the rear end of the horizontal portion to the inside of the skin plate 1. A roller 6a that supports the inner surface of the rear end of the tunnel supporter a so as to be pivotable in the circumferential direction is pivotally supported at the tip of the vertical portion of the bracket 6c that is bent toward the peripheral surface. A plurality of rollers 6a supported by the L-shaped bracket 6c are provided along the curved inner surface of the ring-shaped tunnel support body A, similarly to the rollers 6a supporting the inner surface of the front end of the tunnel support material a. They are arranged on the arc at regular intervals in the circumferential direction.

The supporting form of the tunnel support member a may be such that only the inner surface at the rear end is supported by the roller 6a which is supported by the L-shaped bracket 6c, or as described above. The roller 6a may be supported only by the roller 6a attached to the shaft 6b protruding from 3; however, the front and rear rollers 6a, 6a are configured to support the front and rear ends of the inner surface of the tunnel support material a, respectively. You may keep it. In this case, as the roller 6a for supporting the inner surface of the front end of the tunnel support member a, as described above,
Although the center shaft 6b is fixed to the rib 3, the center shaft 6b may be attached to the skin plate 1 side, which is an immovable portion with respect to the ring body 4, as shown in FIG.

The mounting structure of the roller 6a is such that vertical brackets 6c 'are fixed to the upper half of the inner peripheral surface of the skin plate 1 on the outer periphery of the ring body 4 at small intervals in the circumferential direction. A roller 6a for supporting the inner surface of the front end portion of the tunnel support member a is pivotally supported at the tip of the roller.

As described above, the ring-shaped tunnel support A
In order to support the inner surface of the upper peripheral portion, a plurality of rollers 6a are arranged on an arc along the inner surface of the upper peripheral portion. , The assembly position 2 of the tunnel support A
In FIG. 1, as shown in FIGS. 1 and 2, a support material placing member comprising a plurality of rollers 11 for supporting an outer surface (lower surface) of the tunnel support material a that is curved in a convex arc is disposed.

The support material placing roller 11 has a support bracket 12 horizontally protruding rearward from the lower peripheral portion of the lower surface of the annular rib 3 and a tunnel support material a at the rear end of the support bracket 12. A positioning piece 13 consisting of a vertical plate piece for abutting and receiving the front end face of the positioning piece 13 is fixed, and a center axis 14 is protruded rearward at the lower end of the positioning piece 13 to rotate around the center axis 14. It is freely attached. A plurality of support material placing rollers 11 are arranged at small intervals on an arc along the curved outer surface of the tunnel support material a to form a support material placing member. Further, the positioning piece 13 is formed when the tunnel support material a which protrudes the metal piece 7 gripped by the support material gripping tool 5 at the center of the inner surface when its front end face abuts on the positioning piece 13. The hardware 7 is disposed so as to be located at a position facing the support material gripping tool 5 below. In the drawing, the support material placing roller 11 is formed to have a length capable of supporting the front end of the outer surface of the tunnel support material a.
May be formed to have a length that can be supported between the front and rear ends of the outer surface of the tunnel support member a.
Front and rear rollers for supporting the front and rear ends of the outer surface of the tunnel support member a may be attached to the front and rear portions of the center shaft 14. Further, the positioning piece 13 and the support material placing roller 11 may be attached to the inner bottom surface of the skin plate 1.

As shown in FIG. 4, the shape of the tunnel support material a is a strip-like shape between the longitudinal ends of the front and rear main girders 21 and 22 which are curved along the inner peripheral surface of the skin plate 1. A rock fall prevention member (not shown) made of a wire mesh is stretched over the outer surface curved in a convex arc shape as necessary, and is formed of a steel rectangular frame integrally fixed by the joint plates 23 and 24. You. Incidentally, the pre-supports gripping member 5 tunnel pre-supports a ₁ odor that is gripping by the before and after the main girder 21 in the lengthwise direction of the central portion between the joint plates 23, 24 parallel reinforcement plate (FIG. Not shown)
The metal member 7 to be gripped by the gripper 5 is erected and fixed to the reinforcing plate.

Using the tunnel support body assembling apparatus configured as described above, a plurality of tunnel support materials a are sequentially
Assemble the ring-shaped tunnel支保body A by joining connecting, first, as shown in FIG. 5, assembled tunnel pre-supports a ₁ that protrude the hardware 7 to the inner surface central portion of the tunnel rearward position 2 And feeds the outer surface curved in a convex arc downward onto the support material placing rollers 11 at the assembling position 2 so that the front end surface thereof contacts the positioning piece 13 and the rollers 11 group. Place on top.

Thereafter, the turning drive motor of the ring body 4
Drives the 9a to rotate the ring body 4, the pre-supports gripping member 5 which is attached to the ring member 4 is moved to on the inner surface of the tunnel pre-supports a _1, the central portion of the tunnel pre-supports a ₁ Is stopped at a position facing the hardware 7 protruding from. And
After holding the hardware 7 with the support material gripper 5, the motor
When the only pivot a predetermined angle again driven to the ring body 4 to 9a in the circumferential direction, the tunnel pre-supports a ₁ is along the inner peripheral surface of the skin plate 1 while rotating the pre-supports mounted roller 11 at its outer surface To move integrally in the rotation direction of the ring body 4.

The tunnel support material a ₁ is used as a skin plate 1
When it is moved to a height position along one side surface, the inner surface of the upper end portion of the tunnel support material a ₁ is located on one side of the support material support means 6 disposed on the upper peripheral side in the skin plate 1. While reaching the support roller 6a and being supported on the support roller 6a, the lower end moves to one side end of the assembling position 2 and the rotation of the ring body 4 is stopped in this state, as shown in FIG. supplies the next tunnel pre-supports a ₂ in assembled position 2 as.

[0036] The tunnel pre-supports a _2, an outer surface curved convexly arcuate in a state of facing downward, positioning pieces the front end surface in the feed to the pre-supports mounted roller 11 groups on the assembled position 2 When brought into contact with 13, placed roller 11 with aligned in a state of parallel exactly in the circumferential direction of the skin plate 1 without displacement in the longitudinal direction relative to the tunnel pre-supports a ₁ has been supplied earlier skin plate Since it is arranged to rotate in the circumferential direction of 1, the supplied tunnel support material
a ₂ one end face, that is, one side joint plate 23,
Is simply and accurately joined to the joint plate 24 on the lower end side of the tunnel support material a ₁ which is lifted by the above, and the center of gravity of the tunnel support material a ₂ supplied in the joined state is the lowest part of the assembly position 2. By supplying them so as to be located slightly on the other side from the center, the joined state can be positively maintained.

Therefore, the two tunnel support members joined to each other
The bolt mounting holes drilled in the joint plates 23 and 24 of a ₁ and a ₂ match exactly by simply supplying the tunnel support material a ₂ in contact with the positioning piece 13. Connection work can be performed smoothly and efficiently.

After the tunnel support members a ₁ and a ₂ are integrally connected to each other in this manner, the ring body 4 is again rotated by a predetermined angle in the same direction by the drive motor 9a and attached to the ring body 4. When the gripper 5 is swiveled integrally with the ring body 4, the tunnel support members a ₁ and a ₂ move upward along the inner peripheral surface of the skin plate 1, as shown in FIG. The assembling position 2 is opened.

Similarly, as shown in FIG. 2, the next tunnel support material a ₃ is placed on the placing roller group at the assembling position 2 as shown in FIG.
After joining the one side joint plate 23 and the other side joint plate 24 of the tunnel support material a ₂ moving to one side of the skin plate 1, the ring body 4 is fixed. Tunnel support materials a ₁回 動 connected by rotating in the same direction by the same angle
The a ₃ is moved along the inner circumferential surface of the skin plate 1 is assembled a ring-shaped tunnel支保body A as shown in FIG. 8 by performing this task to a plurality of the tunnel pre-supports a.

After releasing the assembled tunnel supporting body A by the gripping tool 5, the tunnel supporting body A is sent out from the skin plate 1 to the tunnel excavation wall side by an appropriate sending means such as a jack, and is first sent out to the tunnel excavation wall side. In a state of being joined to the front end face of the tunnel support body supporting the excavated wall surface, a portion of the tunnel support body A, which is not connected to the tunnel support material a, is expanded by jacks or the like to expand the diameter. The outer peripheral surface is brought into close contact with the tunnel excavation wall surface.

The support assembly position 2 of the skin plate 1 is provided on the inner bottom surface of the skin plate 1. The lower peripheral portion of the rear portion of the skin plate 1 is cut off to expose the excavated wall surface of the tunnel excavation. The bottom portion may be set as the support material assembly position 2. In this case, the tunnel support material a is directly provided without the support material placing roller 11 being disposed.
The tunnel support body A, which is supplied to the assembling position 2 which is the bottom surface of the tunnel excavation wall surface, is further assembled with the ring body 4 with its lower peripheral portion supported by the bottom surface of the tunnel excavation wall surface. It is possible to send out relatively rearward according to the excavation of the tunnel excavator without using sending means such as.

In the above embodiment, the annular rib 3 provided in the skin plate 1 and the skin plate 1 are used as an immovable portion, and the roller 6a of the support material supporting means 6 is attached to the immovable portion.
When the tunnel excavator is an excavator having a beam body 17 extending rearward from a support member 16 rotatably supporting a cutter plate 15, as shown in FIGS. In this case, the beam member 17 is used as an immovable part.
Alternatively, a structure may be adopted in which the supporting material supporting roller 6a as the supporting material supporting means is supported.

That is, the inner ends of a plurality of support arms 18 are fixed to the upper half of the rear part of the beam member 17, and these support arms 18 are assembled along a portion near the inner peripheral surface of the skin plate 1. Radially protrudes to a position where the inner peripheral surface of the body A is supported, and a support material supporting roller 6a is rotatably supported at the outer end thereof.

The tunnel excavator has a support member 16 integrally fixed to the front end opening of the cylindrical skin plate 1 and the skin plate 1, and is rotatably supported by the support member 16. The cutter plate 15 is driven to rotate by a drive motor (not shown) mounted in the inside.
A beam member 17 integrally fixed to the rear end of the support member 16 and extending horizontally rearward from the rear end of the skin plate 1 through the central space of the skin plate 1; A retractable front gripper 19 integrally mounted on the upper, lower, left and right sides of the support member 16, a rear support 20 projecting downward from the lower surface of the rear end of the beam body 17 and extending vertically by a jack 20a, and a beam body It comprises a rear gripper 21 slidably disposed along the lower surface of the 17, and a propulsion jack 22 connecting the support member 16 and the rear gripper 21.

In the tunnel excavator thus constructed, the support plate assembling position 2 where the support material placing roller 11 is disposed may be provided on the inner bottom surface of the rear end of the skin plate 1. The bottom lower portion of the rear portion of the plate 1 is cut off, and the bottom surface of the tunnel excavation wall surface exposed at the cut portion is defined as a support material assembly position 2. Further, the ring body 4 for assembling the tunnel supporting material a provided along the rear inner peripheral surface of the skin plate 1 and supplied to the supporting material assembling position 2 is rotated by the turning drive means 9 in the same manner as in the above embodiment. The support member gripper 5 may be fixed to the ring member 4 while being swiveled, but in the figure, the ring member 4A is attached to the beam member 17 near the front side of the support member support roller 6a.
Fixed arm members 23 projecting radially from the outer peripheral surface of
Thus, the support plate 5A is fixed along the inner peripheral surface of the skin plate 1, and the supporting material gripping tool 5A is movably mounted on the fixing ring body 4A. Note that the ring body 4A may be fixed to the inner peripheral surface side of the skin plate 1. Also,
The support material gripping tool 5A that moves along the fixing ring body 4A may be adopted in the above-described embodiment that does not include the beam body 17.

As shown in FIG. 11, the moving means of the support material gripping tool 5A, which moves with the fixing ring body 4A as a guide, is fixed to both sides of the cylindrical moving body 51 on which the gripping tool 5A is mounted. A pair of inner and outer sandwiching rollers 52, 53 rotatably supporting the inner and outer peripheral surfaces of the ring body 4A while being in contact with the inner and outer peripheral surfaces, and rotatably supporting the same. Further, a pulley 56 fixed to the shaft end of the rotary drive roller 55 by rotatably supporting a rotary drive roller 55 that rotates in contact with the inner peripheral surface of the fixed ring body 4A inside the cylindrical moving body 51. A belt 58 is wound endlessly between pulleys 57 fixed to the rotation shaft of the drive motor 54.

In order to assemble the ring-shaped tunnel support A by sequentially joining and connecting a plurality of tunnel support materials a with the tunnel support assembly assembling apparatus constructed as described above, first, the metal member 7 is projected into the center of the inner surface. assembly position 2 the tunnel pre-supports a ₁ that are set by loading a tunnel rear side to the assembled position 2 is exposed bottom of the tunnel boring wall
The upwardly curved outer surface is supplied downward. At this time, the front end face of the tunnel support material may be brought into contact with the rear end face of the cut portion of the skin plate 1 so that the rear end face of the cut portion may be used as a positioning portion of the tunnel support material.

[0048] accordingly after, is moved to the tunnel pre-supports a ₁ on the inner surface of the cylindrical movable body 51 by driving the driving motor 54 fixed ring body 4 as a guide, it is attached to the cylindrical moving member 51支保mixture was allowed to gripping the hardware 7 are projected from the central portion of the tunnel pre-supports a ₁ by wood gripping members 5A, the drive motor 54
When the cylindrical moving body 51 is revolved by a predetermined angle in the circumferential direction along the ring body 4 by re-driving, the tunnel support material a ₁ gripped by the support material gripping tool 5A becomes the skin plate 1 Move in the direction of rotation of the ring body 4 along the inner peripheral surface of the ring.

When the tunnel support material a ₁ moves to a height position along one side surface of the skin plate 1, the tunnel support material a ₁ moves.
While the upper end internal surface of a ₁ is supported skin plate on disposed in the circumferential portion reaches the pre-supports supporting rollers 6a of which one side side this支保support rollers on 6a in 1, the lower end portion It moves to one side end of the assembling position 2. Then, joining the next tunnel pre-supports a ₂ to one side joint plate 23 is supplied to the assembly position 2 on the lower end side of the joint plate 24 of the tunnel pre-supports a ₁ being lifted by pre-supports gripping members 5A Let these joint plates 2
3 and 24 are integrally connected with bolts and nuts.

After the two tunnel support members a ₁ and a ₂ are integrally connected to each other in this way, the next tunnel support member a ₃ is supplied to the assembling position 2 again, and the previously supplied tunnel support members a ₂ and a ₂ are connected. After the connection, the support material gripping tool 5A is pivoted in the same direction by an integral angle, and thereafter, the same assembly operation as in the above embodiment is repeated to assemble the ring-shaped tunnel support body A.

After the assembled tunnel support A is released from being gripped by the gripper 5A, the tunnel excavator is excavated, and the tunnel support A is moved relative to the tunnel excavation wall surface from within the skin plate 1 in accordance with the excavation. In the same manner as in the above-described embodiment, the diameter is increased and integrally connected to the tunnel support body previously sent to the tunnel excavation wall surface. The support member supporting roller 6a may be mounted on the inner peripheral surface side of the skin plate 1 so as to support the inner peripheral surface of the front end portion of the tunnel support member a. The tunnel support A assembled in the skin plate 1 is hung by the support roller 6a, and its lower peripheral surface is located at the assembly position 2.
If it rises from the bottom surface of the tunnel excavation wall surface that is exposed to the outside, it may be forcibly sent out by a suitable sending means such as a jack.

In each of the above embodiments,
Although the roller 6a is employed as the support material supporting means 6, the receiving plate which is curved in a dome shape with the same radius of curvature as the inner surface of the tunnel support body A assembled in a ring shape is the above-mentioned skin plate as an immovable portion. 1, the ribs 3 or the beam member 17 may be provided. In addition to the rollers 6a and the dome-shaped receiving plate, the support member 6 may be constituted by a rod or a curved rail. Is also good.

[0053]

As described above, according to the method for supporting a tunnel excavation wall surface of the present invention, a tunnel support body is assembled into a ring-shaped tunnel support body by connecting a plurality of arc-shaped curved tunnel support materials. An apparatus, comprising: a ring body; a tunnel support material gripping tool mounted on the ring body; and a swing drive for circumferentially driving the ring body or the tunnel support material gripping tool mounted on the ring body. Means, and support material support means for receiving an inner peripheral surface of the tunnel support material on the upper peripheral side of the tunnel support body assembled in a ring shape. The support material support means is immovable near the ring body. The support member support means is disposed on the upper peripheral side at an immovable portion which does not interfere with the assembling position of the tunnel support member. Therefore, there is no possibility of having any influence on the assembling position, so that the supply and carry-in work of the tunnel support material to the assembling position can be smoothly performed, and the joining and connecting work of the tunnel support bodies can be efficiently performed. .

Further, according to the second aspect of the present invention, since the support member supporting means is constituted by a roller rotatably supported on a shaft long in the tunnel axis direction, the structure is extremely simple. Of course, while supporting the inner circumferential surface of the tunnel support material to be assembled, the tunnel support material can be rotated in that direction in accordance with the circumferential movement of the tunnel support material to assemble the tunnel support body smoothly and accurately.
By arranging so that two or more locations on the inner surface of each tunnel support material are supported, it is stable without applying excessive bending force to the joining and connecting portions of adjacent tunnel support materials. Support material can be supported,
An accurate ring-shaped tunnel support body can be assembled.

Further, in the invention according to claim 3, the immovable portion is:
With a rib fixed to the inner peripheral surface of the skin plate of the tunnel excavator or the inner peripheral surface of the skin plate, or a beam extending rearward from a support member rotatably supporting the cutter plate of the tunnel excavator. Therefore, it is possible to easily arrange the front and rear rollers for supporting the front and rear ends of the inner peripheral surface of the tunnel support material, and to stably correct the tunnel support material formed of a rectangular frame curved in an arc shape without distortion. Can be supported in a state.

According to the fourth aspect of the present invention, the support material placing member for placing the outer peripheral surface of the tunnel support material facing below the support material support means is provided below the immovable portion. Therefore, the tunnel support material to be supplied to the assembling position can be supported at a predetermined position in a stable posture, and the holding work by the above-described support material gripper and the joining and connecting work of the tunnel support materials can be efficiently performed. It can be carried out.

Further, in the invention according to claim 4, since the supporting member placing member is constituted by a roller rotatably supported on a shaft long in the tunnel axis direction, the roller is formed by a curved surface of the tunnel supporting member. In this case, the outer surface (lower surface) of the tunnel support material, which is supplied on these rollers, can be accurately supported by arranging them at appropriate intervals in the circumferential direction. In addition, it is possible to smoothly move the tunnel support member in the circumferential direction while rolling the roller by the turning movement of the support member holding tool, and it is possible to efficiently assemble the ring-shaped tunnel support body.

[Brief description of the drawings]

FIG. 1 is a simplified longitudinal side view of a tunnel support body assembling apparatus,

FIG. 2 is a simplified rear view thereof,

FIG. 3 is a longitudinal sectional side view of a main part showing support means for a front and rear portion of an inner peripheral surface of a tunnel support member.

FIG. 4 is a perspective view of a tunnel supporting material,

FIG. 5 is a simplified rear view showing a grip state of the first tunnel support material,

FIG. 6 is a simplified rear view of a state where the next tunnel support material is connected,

FIG. 7 is a simplified rear view of the state in which the connected tunnel support members have been moved in the circumferential direction.

FIG. 8 is a simplified rear view of a state where the ring-shaped tunnel support body is assembled.

FIG. 9 is a simplified longitudinal sectional side view of a tunnel excavator showing another embodiment,

FIG. 10 is a simplified rear view of the tunnel support body assembling device part.

FIG. 11 is a simplified vertical sectional front view showing moving means of the gripper;

FIG. 12 is a simplified front view showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Skin plate 2 Assembling position 3 Rib 4 Ring body 5 Support material gripper 6 Support material support means 6a Support material support roller 9 Rotation drive means 11 Support material placement roller

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[Procedure amendment]

[Submission date] August 3, 2001 (2001.8.3)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] Full text

[Correction method] Change

[Correction contents]

[Document Name] Statement

[Title of the Invention] Tunnel support body assembly device

[Claims]

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for assembling a tunnel support body for supporting a rock excavation wall surface excavated by a tunnel excavator.

[0002]

2. Description of the Related Art When a tunnel is excavated by a tunnel excavator, the excavated tunnel wall surface may fall off or fall down. A ring-shaped support body is assembled by connecting a plurality of support members made of H-shaped steel along the tunnel, or a plurality of tunnel support members formed of a rectangular frame curved in an arc shape in a skin plate of a tunnel excavator. After assembling a ring-shaped tunnel support body by connecting the tunnel support bodies to each other, the tunnel support body is sent out from the inside of the skin plate to the tunnel wall surface side to expand the diameter, thereby supporting the tunnel wall surface.

[0003] As a device for assembling a tunnel support body as described above, a swivel ring body 31 is rotatably supported in a skin plate 30 of a tunnel excavator as shown in FIG. An erector device is provided in which a support material gripping tool 32 is fixed and a plurality of support material support fittings 33 are erected at predetermined intervals in the circumferential direction on the outer peripheral surface of the revolving ring body 31.

[0004] To assemble the ring-shaped tunnel支保body A by erector apparatus, first, arcuate revolving ring after one pre-supports a ₁ curved were gripped by pre-supports gripping member 32 to the body 31 the circumferentially rotated by a predetermined angle is moved in the circumferential direction along the inner peripheral surface of the skin plate 30 of the pre-supports a _1, then the following pre-supports a ₂ on the side end surface of the pre-supports a ₁ After the connection, the turning ring body 31 is again rotated in the same direction by a fixed angle, and the inner surface of the support material a ₂ is supported by the support material support bracket 33 standing upright on the outer peripheral surface of the turning ring body 31, By repeating this operation and rotating the swivel ring body 31 substantially one turn, a ring-shaped tunnel support body A in which a plurality of support materials a are connected along the outer peripheral surface of the swirl ring body 31 is assembled.

[0005]

However, in the above-described apparatus for assembling the tunnel support body, a plurality of support material support brackets 33 which rotate integrally with the revolving ring body 31 are provided on the outer peripheral surface of the revolving ring body 31. Since the support material a is supplied to the assembling position on the inner bottom surface of the skin plate 31, the support material support bracket 33 located on the lower peripheral side of the revolving ring body 31 faces the inner bottom surface of the skin plate 30. As a result, the supporting member 33 is not protruded, and the assembling material of the supporting member 33 may be prevented from being carried in. There is a problem that it becomes impossible to carry the material a to a predetermined assembly position.

For this reason, the support member support bracket 33 is moved forward and backward in the radial direction of the revolving ring body 31 by a screw mechanism or the like.
It is necessary to provide a means for allowing refraction in the length direction of the tunnel, and when the structure becomes complicated and the inner peripheral surface of the support member a is supported, the support member a is supported on the inner peripheral surface each time. An operation for bringing the metal fitting 33 into contact is required, and there is a possibility that work efficiency may be reduced.

Further, the support member support bracket 33 requires an adjustment operation or the like for supporting the inner peripheral surface of the support member a as described above.
The number of standing members 31 on the outer peripheral surface is made as small as possible, and is usually adjusted to the number of support members a. Therefore, when assembling the ring-shaped tunnel support body A with the plurality of support materials a while rotating the swivel ring body, the support material a on the free end side is used.
Is bent outward from the joining and connecting portions of the support members, and the tip (lower end) of the supporting member strikes the inner peripheral surface of the skin plate 30, which causes a problem that the assembling operation cannot be performed smoothly.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and the joining and connecting operations of supports can be performed efficiently, and the ring-shaped tunnel support is assembled without causing the supports to bend. It is an object of the present invention to provide a tunnel support body assembling apparatus capable of accurately and efficiently performing the above.

[0009]

In order to achieve the above object, a tunnel support body assembling apparatus according to the present invention comprises a ring-shaped tunnel support member formed by connecting a plurality of tunnel support members each having a rectangular frame curved in an arc shape. A tunnel support body assembling device for assembling into a tunnel support body, wherein a skin of a tunnel excavator is provided.
A ring body provided at an immovable part in the plate, and a central part of an inner surface of the tunnel support material attached to the ring body;
A tunnel pre-supports gripping tool for gripping and a pivot driving means for pivoting driving the tunnel pre-supports gripping tools in the circumferential direction, not
The roller is rotatably supported on a shaft projecting from the moving part.
And support material supporting means.
The above-mentioned tunnel support body in which the rollers can be assembled in a ring shape
The front end side of the inner peripheral surface of the tunnel support material on the upper peripheral side
Around the rear end and at predetermined intervals in the circumferential direction,
Roller front end inner surface and rear end inner surface
Are respectively received .

[0010] In the tunnel支保assembling apparatus, not
The moving part is, as described in claim 2, an inner peripheral surface of a skin plate of the tunnel excavator or a rib fixed to the inner peripheral surface of the skin plate, or a support rotatably supporting a cutter plate of the tunnel excavator. It is a beam body extending rearward from the member.

[0011]

[Function] A tunnel support material that is curved in an arc shape in a direction along a tunnel excavation wall surface is supplied to an assembling position on an inner bottom surface of a skin plate or a bottom surface of a tunnel near a lower portion of a ring body, and is attached to the ring body. The supporting member gripping tool is moved to a position facing the inner surface of the tunnel supporting material, and a predetermined portion of the inner surface of the tunnel supporting material is gripped by the supporting material gripping tool.

At this time, the support means of the ring-shaped tunnel support body assembled by connecting a plurality of tunnel support materials is fixed to the inner peripheral surface of the skin plate of the tunnel excavator or the inner peripheral surface of the skin plate. A rib or a stationary member such as a beam body extending rearward from a support member rotatably supporting a cutter plate of a tunnel excavator, and disposed above the assembling position to support the tunnel. Since the inner peripheral surface of the tunnel support member on the upper peripheral side of the body is received, the support means is disposed at an immovable point which does not interfere with the assembly position of the tunnel support material. The structure makes it possible to smoothly supply and carry in the tunnel support material to the assembling position.

The above-mentioned tunnel support material gripped by the support material gripper is lifted on the movement locus of the support material gripper by rotating the support material gripper by a predetermined angle in the circumferential direction. At the same time, a part of the inner peripheral surface thereof reaches the support means provided on one side of the immovable portion and is in front of the support means .
The inner surface of the front and rear ends is supported by the rear roller . Then
The next tunnel support material is supplied to the assembling position, and the end surfaces facing the tunnel support material are joined together and integrally connected by bolts, and then the support material gripper is turned again by a predetermined angle in the same direction. As a result, the tunnel supporting material on the leading side is moved onto the support means on the upper peripheral side of the immobile portion.

Similarly, each time a plurality of tunnel support members are successively connected, the support member gripper is turned by a predetermined angle in the circumferential direction, thereby turning the inner peripheral surface of the skin plate or the inside of the tunnel. Assemble a ring-shaped tunnel support along the peripheral surface.

The support member supporting means fixed to the immovable portion does not support the inner surface of the tunnel support member when the tunnel support member is supplied to the assembling position, but the support member gripper pivots in the circumferential direction. When the tunnel support material moving integrally with the support material gripping tool reaches the position where the support material support means is provided, the tunnel support material is disposed so as to support the downward or obliquely downward inner surface of the tunnel support material. Since it is sufficient to do so, there is no influence on the assembling work of the tunnel support material.

Further, the supporting member supporting means is constituted by a roller rotatably supported on a shaft which is long in the tunnel axis direction, and this roller supports two or more inner surfaces of one supporting member. By arranging them in such a manner, it becomes possible to join adjacent tunnel support materials and to support the support material stably without applying an excessive bending force to the connecting portion, and assemble a ring-shaped tunnel support body with high accuracy. be able to.

Further, by placing the mounting member of the tunnel support material below the immovable portion where the support material support means is disposed, that is, at the assembly position of the tunnel support material, the mounting member can be moved to the assembly position. The tunnel support material to be supplied can be supported at a predetermined position in a stable posture, and the work of gripping by the support material gripping tool and the joining and connecting work of the tunnel support materials can be performed efficiently.

The supporting member mounting member is formed of a roller rotatably supported on a shaft long in the tunnel axis direction in the same manner as the above-mentioned supporting member supporting means, and the roller extends along the curved surface of the tunnel supporting member. By arranging them at appropriate intervals in the direction, not only can the outer surface (lower surface) curved in a convex arc shape of the tunnel support material supplied on these rollers be accurately supported, but also the above-mentioned support can be provided. By rotating the material holding tool, the tunnel support material can be smoothly moved in the circumferential direction while rolling the roller, and the ring-shaped tunnel support body can be efficiently assembled. In addition, the support material holding tool may be fixed to the ring body, and may be moved integrally with the ring body by rotating the ring body, or the ring body may be fixed and the fixed ring body may be fixed. The supporting material gripper may be movably mounted on the support member.

[0019]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a first embodiment of the present invention; FIG.
Is a cylindrical skin plate of a tunnel excavator, and a proper position of the inner bottom surface curved in a concave arc shape is used as an assembling position 2 of the tunnel support material a.
An outer peripheral surface of an annular rib 3 is integrally fixed to an inner peripheral surface of the skin plate 1 at a front portion of the ring plate 3, and a ring body 4 is pivotably disposed on the assembly position 2 on a rear surface side of the rib 3. In addition, a support material gripping tool 5 is integrally mounted at an appropriate position on the rear surface of the ring body 4. Furthermore, the ring body 4
A plurality of support material support means 6 are arranged at predetermined intervals in the circumferential direction on the outer periphery concentric with the ring body 4 at a small interval from the outer peripheral surface of.

The ring body 4 is supported by a plurality of guide rollers 8 rotatably supporting the inner peripheral surface of the ring 3 on the rear surface of the rib 3 concentrically and rotatably. It is configured to pivot on the guide roller 8. The turning drive means 9 includes a drive motor 9a fixed to an appropriate position of the rib 3, a small gear 9b fixed to a rotating shaft of the drive motor 9a, and an inner gear formed on an inner peripheral surface of the ring body 4. And a small gear 9b.
The ring body 4 is rotated by the rotation of the drive motor 9a by meshing with the ring 9c.

The supporting member gripping tool 5 integrally attached to the ring body 4 has a front end face integrally fixed to a rear face of the ring body 4 at a rear end portion of an arm member 10 having a fixed length. , Are attached to the inner peripheral surface side of the skin plate 1. The arm member 10 projects horizontally rearward from the rear surface of the ring body 4 to a position above the support material assembling position 2. Therefore, the support material gripper 5 is attached to the support material assemble position 2. Is configured so as to pivot above. Note that the support material gripping tool 5 includes a plurality of tunnel support materials a ₁ , a ₂ , a _3, ... Assembled on the ring-shaped tunnel support body A.
In, and is configured to grip detachably the first hardware are projected only on the inner central portion of the tunnel pre-supports a ₁ 7 (shown in FIG. 5).

On the other hand, on the outer periphery at a small distance from the outer peripheral surface of the ring body 4, the support material supporting means 6 arranged on the upper peripheral part on the concentric circle with the ring body 4 is a tunnel assembled in a ring shape. It is configured to support the inner surface of the upper peripheral portion of the support body A, and is an immovable portion near the ring body 4, that is, in FIG.
It is attached to the rear surface of the annular rib 3 which is fixed to the rib.

The support member supporting means 6 is provided at the rear of a long shaft 6b which is fixed to the rear surface of the rib 3 and protrudes horizontally from the rear surface in the tunnel axis direction. A roller 6a to be supported is rotatably mounted. A plurality of the rollers 6a mounted on the shaft 6b are arranged at regular intervals in a circumferential direction on an arc along the curved inner surface of the ring-shaped tunnel support A. are doing.

Since the roller 6a constituting the supporting member supporting means 6 has its center axis 6b projecting rearward along the outer peripheral surface of the ring body 4, the tunnel supporting member A constituting the ring-shaped tunnel supporting body A is provided. Even if an attempt is made to support the inner surface on the rear end side from the central portion of the material a, it cannot be supported since it intersects with the turning locus of the support material gripping tool 5, and therefore, the turning locus of the support material gripping tool 5 the While so as to support the front end inner surface of the tunnel pre-supports a in front, are configured to be supported rear end inner surface of the tunnel pre-supports a
You .

That is, as shown in FIG. 3, the front end of the horizontal portion of the L-shaped bracket 6c is fixed to the inner peripheral portion of the rear surface of the annular rib 3 and the horizontal portion is formed in the central space of the ring body 4. Through the inside of the turning trajectory of the support material gripping tool 5 and project rearward to a position reaching the inside of the rear end inner surface of the tunnel support material a, from the rear end of the horizontal portion to the inside of the skin plate 1. A roller 6a that supports the inner surface of the rear end of the tunnel supporter a so as to be pivotable in the circumferential direction is pivotally supported at the tip of the vertical portion of the bracket 6c that is bent toward the peripheral surface. A plurality of rollers 6a supported by the L-shaped bracket 6c are provided along the curved inner surface of the ring-shaped tunnel support body A, similarly to the rollers 6a supporting the inner surface of the front end of the tunnel support material a. They are arranged on the arc at regular intervals in the circumferential direction.

As described above, the roller 6a for supporting the inner surface of the front end portion of the tunnel support member a has its central axis.
6b is fixed to the rib 3, but as shown in FIG.
It may be attached to the side. The mounting structure of the roller 6a is such that a vertical bracket 6c 'is provided on the upper half of the inner peripheral surface of the skin plate 1 on the outer periphery of the ring body 4 at small intervals in the circumferential direction.
And a roller 6a for supporting the inner surface of the front end of the tunnel support member a is pivotally supported at the tip of each vertical bracket 6c '.

Thus, the ring-shaped tunnel support A
In order to support the inner surface of the upper peripheral portion, a plurality of rollers 6a are arranged on an arc along the inner surface of the upper peripheral portion. , The assembly position 2 of the tunnel support A
In FIG. 1, as shown in FIGS. 1 and 2, a support material placing member comprising a plurality of rollers 11 for supporting an outer surface (lower surface) of the tunnel support material a that is curved in a convex arc is disposed.

The support material placing roller 11 has a support bracket 12 horizontally protruding rearward from the lower surface of the lower peripheral portion of the annular rib 3 and a tunnel support material a at the rear end of the support bracket 12. A positioning piece 13 consisting of a vertical plate piece for abutting and receiving the front end face of the positioning piece 13 is fixed, and a center axis 14 is protruded rearward at the lower end of the positioning piece 13 to rotate around the center axis 14. It is freely attached. A plurality of support material placing rollers 11 are arranged at small intervals on an arc along the curved outer surface of the tunnel support material a to form a support material placing member. Further, the positioning piece 13 is formed when the tunnel support material a which protrudes the metal piece 7 gripped by the support material gripping tool 5 at the center of the inner surface when its front end face abuts on the positioning piece 13. The hardware 7 is disposed so as to be located at a position facing the support material gripping tool 5 below. In the drawing, the support material placing roller 11 is formed to have a length capable of supporting the front end of the outer surface of the tunnel support material a.
May be formed to have a length that can be supported between the front and rear ends of the outer surface of the tunnel support member a.
Front and rear rollers for supporting the front and rear ends of the outer surface of the tunnel support member a may be attached to the front and rear portions of the center shaft 14. Further, the positioning piece 13 and the support material placing roller 11 may be attached to the inner bottom surface of the skin plate 1.

As shown in FIG. 4, the shape of the tunnel support material a is such that the longitudinal ends of the front and rear main girders 21 and 22 which are curved in an arc along the inner peripheral surface of the skin plate 1 have a strip shape. A rock fall prevention member (not shown) made of a wire mesh is stretched over the outer surface curved in a convex arc shape as necessary, and is formed of a steel rectangular frame integrally fixed by the joint plates 23 and 24. You. Incidentally, the pre-supports gripping member 5 tunnel pre-supports a ₁ odor that is gripping by the before and after the main girder 21 in the lengthwise direction of the central portion between the joint plates 23, 24 parallel reinforcement plate (FIG. Not shown)
The metal member 7 to be gripped by the gripper 5 is erected and fixed to the reinforcing plate.

Using the tunnel support body assembling apparatus configured as described above, a plurality of tunnel support materials a are sequentially placed.
Assemble the ring-shaped tunnel支保body A by joining connecting, first, as shown in FIG. 5, assembled tunnel pre-supports a ₁ that protrude the hardware 7 to the inner surface central portion of the tunnel rearward position 2 And feeds the outer surface curved in a convex arc downward onto the support material placing rollers 11 at the assembling position 2 so that the front end surface thereof contacts the positioning piece 13 and the rollers 11 group. Place on top.

Thereafter, the turning drive motor of the ring body 4
Drives the 9a to rotate the ring body 4, the pre-supports gripping member 5 which is attached to the ring member 4 is moved to on the inner surface of the tunnel pre-supports a _1, the central portion of the tunnel pre-supports a ₁ Is stopped at a position facing the hardware 7 protruding from. And
After holding the hardware 7 with the support material gripper 5, the motor
When the only pivot a predetermined angle again driven to the ring body 4 to 9a in the circumferential direction, the tunnel pre-supports a ₁ is along the inner peripheral surface of the skin plate 1 while rotating the pre-supports mounted roller 11 at its outer surface To move integrally in the rotation direction of the ring body 4.

This tunnel support material a ₁ is used as a skin plate 1
When it is moved to a height position along one side surface, the inner surface of the upper end portion of the tunnel support material a ₁ is located on one side of the support material support means 6 disposed on the upper peripheral side in the skin plate 1. While reaching the support roller 6a and being supported on the support roller 6a, the lower end moves to one side end of the assembling position 2 and the rotation of the ring body 4 is stopped in this state, as shown in FIG. supplies the next tunnel pre-supports a ₂ in assembled position 2 as.

[0033] The tunnel pre-supports a _2, an outer surface curved convexly arcuate in a state of facing downward, positioning pieces the front end surface in the feed to the pre-supports mounted roller 11 groups on the assembled position 2 When brought into contact with 13, placed roller 11 with aligned in a state of parallel exactly in the circumferential direction of the skin plate 1 without displacement in the longitudinal direction relative to the tunnel pre-supports a ₁ has been supplied earlier skin plate Since it is arranged to rotate in the circumferential direction of 1, the supplied tunnel support material
a ₂ one end face, that is, one side joint plate 23,
Is simply and accurately joined to the joint plate 24 on the lower end side of the tunnel support material a ₁ which is lifted by the above, and the center of gravity of the tunnel support material a ₂ supplied in the joined state is the lowest part of the assembly position 2. By supplying them so as to be located slightly on the other side from the center, the joined state can be positively maintained.

Therefore, the two tunnel support materials joined to each other
The bolt mounting holes drilled in the joint plates 23 and 24 of a ₁ and a ₂ match exactly by simply supplying the tunnel support material a ₂ in contact with the positioning piece 13. Connection work can be performed smoothly and efficiently.

After the tunnel support members a ₁ and a ₂ are integrally connected to each other in this manner, the ring body 4 is again rotated by a predetermined angle in the same direction by the drive motor 9a and mounted on the ring body 4. When the gripper 5 is swiveled integrally with the ring body 4, the tunnel support members a ₁ and a ₂ move upward along the inner peripheral surface of the skin plate 1, as shown in FIG. The assembling position 2 is opened.

Similarly, the next tunnel support member a ₃ is placed on the placing roller group at the assembling position 2 as shown in FIG.
After joining the one side joint plate 23 and the other side joint plate 24 of the tunnel support material a ₂ moving to one side of the skin plate 1, the ring body 4 is fixed. Tunnel support materials a ₁回 動 connected by rotating in the same direction by the same angle
The a ₃ is moved along the inner circumferential surface of the skin plate 1 is assembled a ring-shaped tunnel支保body A as shown in FIG. 8 by performing this task to a plurality of the tunnel pre-supports a.

After releasing the assembled tunnel supporter A by the gripper 5, the tunnel support body A is sent out from the skin plate 1 to the tunnel excavation wall surface by a suitable sending means such as a jack, and is first sent out to the tunnel excavation wall surface. In a state of being joined to the front end face of the tunnel support body supporting the excavated wall surface, a portion of the tunnel support body A, which is not connected to the tunnel support material a, is expanded by jacks or the like to expand the diameter. The outer peripheral surface is brought into close contact with the tunnel excavation wall surface.

Although the support assembly position 2 of the skin plate 1 is provided on the inner bottom surface of the skin plate 1, the lower extremity of the rear portion of the skin plate 1 is cut off to expose the excavated wall surface of the tunnel excavation. The bottom portion may be set as the support material assembly position 2. In this case, the tunnel support material a is directly provided without the support material placing roller 11 being disposed.
The tunnel support body A, which is supplied to the assembling position 2 which is the bottom surface of the tunnel excavation wall surface, is further assembled with the ring body 4 with its lower peripheral portion supported by the bottom surface of the tunnel excavation wall surface. It is possible to send out relatively rearward according to the excavation of the tunnel excavator without using sending means such as.

In the above embodiment, the annular rib 3 provided in the skin plate 1 or the skin plate 1 is used as an immovable portion, and the roller 6a of the support material supporting means 6 is attached to the immovable portion.
When the tunnel excavator is an excavator having a beam body 17 extending rearward from a support member 16 rotatably supporting a cutter plate 15, as shown in FIGS. In this case, the beam member 17 is used as an immovable part.
Alternatively, a structure may be adopted in which the supporting material supporting roller 6a as the supporting material supporting means is supported.

That is, the inner ends of a plurality of support arms 18 are fixed to the upper half of the rear part of the beam member 17 and these support arms 18 are assembled along the vicinity of the inner peripheral surface of the skin plate 1. Radially protrudes to a position where the inner peripheral surface of the body A is supported, and a support material supporting roller 6a is rotatably supported at the outer end thereof.

The tunnel excavator has a support member 16 integrally fixed to the front end opening of the cylindrical skin plate 1 and the skin plate 1, and is rotatably supported by the support member 16. The cutter plate 15 is driven to rotate by a drive motor (not shown) mounted in the inside.
A beam member 17 integrally fixed to the rear end of the support member 16 and extending horizontally rearward from the rear end of the skin plate 1 through the central space of the skin plate 1; A retractable front gripper 19 integrally mounted on the upper, lower, left and right sides of the support member 16, a rear support 20 projecting downward from the lower surface of the rear end of the beam body 17 and extending vertically by a jack 20a, and a beam body It comprises a rear gripper 21 slidably disposed along the lower surface of the 17, and a propulsion jack 22 connecting the support member 16 and the rear gripper 21.

In the tunnel excavator constructed as described above, the support plate assembling position 2 in which the support material placing roller 11 is disposed may be provided on the inner bottom surface of the rear end portion of the skin plate 1. The bottom lower portion of the rear portion of the plate 1 is cut off, and the bottom surface of the tunnel excavation wall surface exposed at the cut portion is defined as a support material assembly position 2. Further, the ring body 4 for assembling the tunnel supporting material a provided along the rear inner peripheral surface of the skin plate 1 and supplied to the supporting material assembling position 2 is rotated by the turning drive means 9 in the same manner as in the above embodiment. The support member gripper 5 may be fixed to the ring member 4 while being swiveled, but in the figure, the ring member 4A is attached to the beam member 17 near the front side of the support member support roller 6a.
Fixed arm members 23 projecting radially from the outer peripheral surface of
Thus, the support plate 5A is fixed along the inner peripheral surface of the skin plate 1, and the supporting material gripping tool 5A is movably mounted on the fixing ring body 4A. Note that the ring body 4A may be fixed to the inner peripheral surface side of the skin plate 1. Also,
The support material gripping tool 5A that moves along the fixing ring body 4A may be adopted in the above-described embodiment that does not include the beam body 17.

As shown in FIG. 11, the moving means of the support material gripper 5A, which moves with the fixing ring body 4A as a guide, is fixed to both sides of a cylindrical moving body 51 on which the gripper 5A is mounted. A pair of inner and outer sandwiching rollers 52, 53 rotatably supporting the inner and outer peripheral surfaces of the ring body 4A while being in contact with the inner and outer peripheral surfaces, and rotatably supporting the same. Further, a pulley 56 fixed to the shaft end of the rotary drive roller 55 by rotatably supporting a rotary drive roller 55 that rotates in contact with the inner peripheral surface of the fixed ring body 4A inside the cylindrical moving body 51. A belt 58 is wound endlessly between pulleys 57 fixed to the rotation shaft of the drive motor 54.

In order to assemble the ring-shaped tunnel support A by sequentially joining and connecting a plurality of tunnel support materials a by the tunnel support body assembling apparatus configured as described above, first, the metal member 7 is projected into the center of the inner surface. assembly position 2 the tunnel pre-supports a ₁ that are set by loading a tunnel rear side to the assembled position 2 is exposed bottom of the tunnel boring wall
The upwardly curved outer surface is supplied downward. At this time, the front end face of the tunnel support material may be brought into contact with the rear end face of the cut portion of the skin plate 1 so that the rear end face of the cut portion may be used as a positioning portion of the tunnel support material.

[0045] accordingly after, is moved to the tunnel pre-supports a ₁ on the inner surface of the cylindrical movable body 51 by driving the driving motor 54 fixed ring body 4 as a guide, it is attached to the cylindrical moving member 51支保mixture was allowed to gripping the hardware 7 are projected from the central portion of the tunnel pre-supports a ₁ by wood gripping members 5A, the drive motor 54
When the cylindrical moving body 51 is revolved by a predetermined angle in the circumferential direction along the ring body 4 by re-driving, the tunnel support material a ₁ gripped by the support material gripping tool 5A becomes the skin plate 1 Move in the direction of rotation of the ring body 4 along the inner peripheral surface of the ring.

When the tunnel support material a ₁ moves to a height position along one side surface of the skin plate 1, the tunnel support material a ₁
While the upper end internal surface of a ₁ is supported skin plate on disposed in the circumferential portion reaches the pre-supports supporting rollers 6a of which one side side this支保support rollers on 6a in 1, the lower end portion It moves to one side end of the assembling position 2. Then, joining the next tunnel pre-supports a ₂ to one side joint plate 23 is supplied to the assembly position 2 on the lower end side of the joint plate 24 of the tunnel pre-supports a ₁ being lifted by pre-supports gripping members 5A Let these joint plates 2
3 and 24 are integrally connected with bolts and nuts.

After the two tunnel support members a ₁ and a ₂ are integrally connected to each other, the next tunnel support member a ₃ is supplied to the assembling position 2 again, and the previously supplied tunnel support members a ₂ and a ₂ are connected to each other. After the connection, the support material gripping tool 5A is pivoted in the same direction by an integral angle, and thereafter, the same assembly operation as in the above embodiment is repeated to assemble the ring-shaped tunnel support body A.

After releasing the assembled tunnel supporter A by the gripper 5A, the tunnel excavator is excavated, and the tunnel supporter A is moved relative to the tunnel excavation wall surface from within the skin plate 1 in accordance with the excavation. In the same manner as in the above-described embodiment, the diameter is increased and integrally connected to the tunnel support body previously sent to the tunnel excavation wall surface. The support member supporting roller 6a may be mounted on the inner peripheral surface side of the skin plate 1 so as to support the inner peripheral surface of the front end portion of the tunnel support member a. The tunnel support A assembled in the skin plate 1 is hung by the support roller 6a, and its lower peripheral surface is located at the assembly position 2.
If it rises from the bottom surface of the tunnel excavation wall surface that is exposed to the outside, it may be forcibly sent out by a suitable sending means such as a jack.

[0049]

As described above, according to the method for supporting a tunnel excavation wall surface according to the present invention, a ring-shaped tunnel is formed by connecting a plurality of tunnel support materials formed of a rectangular frame curved in an arc shape. A tunnel support body assembling device to be mounted on a support body , wherein an immovable portion in a skin plate of a tunnel excavator is provided.
A ring member disposed on the, is mounted on the ring member
A tunnel pre-supports gripping tool for gripping the inner surface central portion of the tunnel pre-supports Te, a turning driving means for turning drive the tunnel pre-supports gripping tools in the circumferential direction, are protruded from the stationary unit
Support means for supporting a roller rotatably on a shaft which is rotatable. The rollers of the support material support means are formed in a ring shape.
The tunnel on the upper peripheral side of the tunnel support body assembled in
Around the front end and rear end of the inner peripheral surface of
These rollers are arranged at predetermined intervals and the front and rear rollers
The inner surface of the front end and the inner surface of the rear end of the
Since the configuration so that, since the said supporting coercive material supporting means are disposed in the upper peripheral portion of the stationary location which is not in any way, disturb the relative assembled positions of the tunnel pre-supports with respect to the assembly position There is no possibility of having any influence, and the operation of supplying and carrying in the tunnel support material to the assembly position can be performed smoothly, and the operation of joining and connecting the tunnel support members can be performed efficiently.

Further , the support member supporting means may be an immovable part.
Since it is composed of rollers rotatably supported on a protruding shaft, the structure is extremely simple, and of course, while supporting the inner peripheral surface of the assembled tunnel support material, The tunnel support can be smoothly and accurately assembled by rotating in that direction according to the movement in the direction, and furthermore, this roller is arranged so as to support two or more places on its inner surface with respect to one tunnel support. By doing so, it becomes possible to join the adjacent tunnel support materials and to support the support material stably without applying an excessive bending force to the connecting portion, and it is possible to assemble a highly accurate ring-shaped tunnel support body. it can.

According to the second aspect of the present invention, the inner peripheral surface of the skin plate of the tunnel excavator, the rib fixed to the inner peripheral surface of the skin plate, or the cutter plate of the tunnel excavator can be freely rotated. Since the beam body extends rearward from the supporting member, the front and rear rollers that support the front and rear ends on the inner peripheral surface of the tunnel support material can be easily arranged, and the rectangular shape curved in an arc shape It is possible to support the tunnel support member composed of the frame in a stable and accurate state without distortion.

[Brief description of the drawings]

FIG. 1 is a simplified longitudinal side view of a tunnel support body assembling apparatus,

FIG. 2 is a simplified rear view thereof,

FIG. 3 is a longitudinal sectional side view of a main part showing support means for a front and rear portion of an inner peripheral surface of a tunnel support member.

FIG. 4 is a perspective view of a tunnel supporting material,

FIG. 5 is a simplified rear view showing a grip state of the first tunnel support material,

FIG. 6 is a simplified rear view of a state where the next tunnel support material is connected,

FIG. 7 is a simplified rear view of the state in which the connected tunnel support members have been moved in the circumferential direction.

FIG. 8 is a simplified rear view of a state where the ring-shaped tunnel support body is assembled.

FIG. 9 is a simplified longitudinal sectional side view of a tunnel excavator showing another embodiment,

FIG. 10 is a simplified rear view of the tunnel support body assembling device part.

FIG. 11 is a simplified vertical sectional front view showing moving means of the gripper;

FIG. 12 is a simplified front view showing a conventional example.

[Description of Signs] 1 Skin plate 2 Assembly position 3 Rib 4 Ring body 5 Supporting material gripper 6 Supporting material supporting means 6a Supporting material supporting roller 9 Rotating driving means 11 Supporting material placing roller

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Shoji Inoue 2-2-2 Matsuzaki-cho, Abeno-ku, Osaka-shi, Osaka Prefecture Inside Okumura Gumi Co., Ltd. Matsumatsu Komatsu Plant (72) Inventor Masaru Nakamura 5 Yokaichi Town, Komatsu City, Ishikawa Prefecture Komatsu Plant Komatsu Plant F-term (reference) 2D055 BB01 GB04 GB07

Claims (5)

[Claims] 1. A tunnel support body assembling device for assembling a ring-shaped tunnel support body by connecting a plurality of arcuately curved tunnel support materials, comprising: a ring body; and a tunnel support mounted on the ring body. A material gripper,
Turning drive means for turning the ring body or the tunnel support material gripping tool mounted on the ring body in a circumferential direction,
A support member for receiving an inner peripheral surface of the tunnel support member on the upper peripheral side of the tunnel support member assembled in a ring shape; and the support member support means is attached to an immovable portion near the ring body. An assembling apparatus for a tunnel support body, wherein 2. The tunnel supporting body assembling apparatus according to claim 1, wherein the supporting member supporting means is a roller rotatably supported on a shaft that is long in the tunnel axis direction. 3. The fixed portion is a rear surface from an inner peripheral surface of a skin plate of the tunnel excavator, a rib fixed to an inner peripheral surface of the skin plate, or a support member rotatably supporting a cutter plate of the tunnel excavator. The tunnel support body assembling apparatus according to claim 1, wherein the beam body is a beam body extending to the tunnel support body. 4. A supporting member placing member for placing an outer peripheral surface of a tunnel supporting member facing a lower portion of the supporting member supporting means and disposed below the immovable portion. 2. A device for assembling a tunnel support according to claim 1. 5. The tunnel supporting body assembling apparatus according to claim 4, wherein the supporting material placing member is a roller rotatably supported on a shaft that is long in the tunnel axis direction.