JPH09151699A - Center pillar member fitting device for tunnel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a center pillar member fitting device applicable to a shield machine having a screw conveyer in the central position in the cross direction on the advance side. SOLUTION: A lifting link mechanism 5 having each pair of lifting side guide rollers 5f, central guide rollers 5e and winch side guide rollers 5g is supported on a link support bracket 2a projected on the outer periphery of a screw conveyer 2 through an oscillating fulcrum shaft 5b, and a winch 6 is provided on the lower position of the lifting link mechanism 5 of the outer periphery of the screw conveyer 2, thereby wrapping a wire rope 7 for suspending a center pillar member 9 round a space ring 5h between the guide rolls. Thus, the center pillar member 9 is lifted avoiding the screw conveyer by winding up the wire rope 9 with the winch 6, and after one end side is fixed, the wire rope 7 is transferred from the center pillar member 9 to the winch side roller support shaft and again winding up to rotate the lifting link mechanism 5, whereby the center pillar member 9 can be lifted horizontally.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for mounting a middle pillar member for a tunnel, which is used for raising a middle pillar member located at a lower position in a tunnel and horizontally arranging the middle pillar member in an upper portion of the tunnel. It belongs to the technical field.

[0002]

2. Description of the Related Art As is well known, in a tunnel shield construction method, in order to reinforce an excavated tunnel, a middle pillar member made of, for example, a section steel is erected at a predetermined interval above the inner wall of the tunnel. To be done. As the one used for the reinforcement work of the tunnel, for example, Japanese Patent Laid-Open No. 7-1392
What is disclosed in Japanese Patent Publication No. 99 is known.

An outline thereof is given below with reference to FIG. 5 (a), which is a vertical sectional side view showing the entire underground equipment including the mobile carrier, and FIG. 5 is an enlarged side view of the upper work carriage in the mobile carrier.
The same name as that used in the specification and the drawings attached to the specification with reference to (b) and FIG. 6 which is a plan cross-sectional view showing the entire underground facility including the mobile carrier. It will be described with reference numerals.

Reference numeral 1 shown in FIG. 5 (a) is a shield machine (hereinafter referred to as a shield machine). Inside the shield machine 1, a first machine is provided in the front-back direction of the shield machine 1. The rail 10 is laid, and the mobile carrier 11 is movably supported by the first rail 10. The mobile transport device 11 includes a traveling frame 12 that travels on the first rail 10 by a drive device 16. An overhead crane 1 in which a segment serving as a tunnel building member is suspended by a load suspending device 20 on a cross beam member of the traveling frame 12.
8 is movably supported. A tension member (hereinafter referred to as a center pillar member) 9 that is a tunnel building member is suspended by an overhead crane (not shown) provided on the rear side of the mobile carrier 11.

Further, a lifting device 22 is supported on a column member on the rear side of the traveling frame 12 so as to be able to rise from a lower position of the traveling frame 12 to an upper position thereof. As shown in FIG. 5 (b), an upper working carriage 25 including a roller conveyor 29 on which the center pillar member 9 suspended by the overhead crane 18 is loaded and a jack 28 for moving the roller conveyor 29 up and down is mounted. Has been done. Then, the upper work carriage 25 lifted by the lifting device 22 is configured so as to be able to move to the fourth rail 24 laid on the lateral beam member of the traveling frame 12. In addition, as shown in FIG. 5 (a), the sloping arrangement, and the imaginary lines shown in FIG. 6 arranged on both sides near the inside of the traveling frame 12 indicate a screw-out unit for carrying out excavated earth and sand. The conveyors 2 and 2.

Therefore, the mobile carrier 1 having the above structure
1 lowers the upper work carriage 25 by the lifting device 22. The middle pillar member 9 is hung by an overhead crane (not shown) provided on the rear side of the mobile carrier 11, and the hung middle pillar member 9 is loaded on the roller conveyor 29 of the upper work carriage 25. Next, the lifting device 2
2 raises the upper work carriage 25 to the upper position of the traveling frame 12 and moves the lifted upper work carriage 25 onto the fourth rail 24. Then, when reaching the predetermined position, the upper work truck 25 is stopped and the jack 28
Thus, the roller conveyor 29 is raised to lift the middle pillar member 9 to a predetermined height position.

[0007]

According to the above-mentioned conventional mobile carrier, since the middle pillar member located at the lower position can be lifted up to a predetermined height, the middle pillar member is arranged in the tunnel. Useful to do. However, many shield machines have a configuration in which the screw conveyor is arranged in a slanted manner in the central portion in the width direction of the shield machine. That is, providing two screw conveyors as in the conventional example means that it is necessary to dispose two systems of a belt conveyor that conveys the earth and sand discharged from the screw conveyor and a earth and sand unloading device that carries out the earth and sand, This may be disadvantageous in terms of initial cost and running cost, but above all, one screw conveyor is sufficient unless the shield machine is particularly large.

By the way, the center pillar member is arranged to reduce the bending moment acting on the segment assembled in the tunnel. Therefore, by disposing the middle pillar member inside the segment assembled in the tunnel, it is possible to reduce the girder height and the like of the segment and reduce the weight, thus reducing the tunnel construction cost. Can make a great contribution. However, the mobile carrier device according to the conventional example cannot be applied to the shield machine having one screw conveyor at the center position in the width direction.
That is, since the long middle pillar member comes into contact with the screw conveyor, the upper work carriage cannot be lifted. Therefore, it is inevitable that the middle pillar member has a divided structure, which requires a joining member, an assembling device or a lifting device for the joining member, which makes it difficult to reduce the total tunnel construction cost.

Therefore, an object of the present invention is to provide an inner pillar member mounting device for a tunnel which can be applied to a shield machine having one screw conveyor at a central position in the width direction on the digging direction side. .

[0010]

SUMMARY OF THE INVENTION In view of the above-mentioned circumstances, the present invention is to lift a center pillar member horizontally placed on the lower side through a space outside the screw conveyor so as to avoid the screw conveyor. This is what I thought was good.

Therefore, in order to solve the above-mentioned problems, the main means adopted by the device for mounting a middle pillar member for a tunnel according to the present invention is arranged at a rear position of the erector device on the outer peripheral portion of the screw conveyor of the shield machine. A middle pillar member mounting device for a tunnel, which pulls up a middle pillar member for horizontal arrangement in the upper part of the tunnel, and swings through a horizontal swinging fulcrum shaft in the forward and backward direction of the shield machine. A pair of roller support shafts are movably supported, and roller support shafts are provided at both ends sandwiching the rocking fulcrum shaft. A lifting link mechanism having a guide roller fitted therein, a winch disposed below the lifting link mechanism, and a rewinding reel wound around the winch. Together they are subjected to ring, characterized by comprising the wire rope comprising comprises a hanging bracket for hanging a center post member for tunnel tip.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION A central pillar member mounting device for a tunnel according to an embodiment of the present invention will now be described with reference to FIG. 1 which is a schematic vertical sectional side view showing an entire underground facility including the central pillar member mounting device for a tunnel. 2A of the sectional view taken along the line AA of FIG.
FIG. 2B is an enlarged view of part B of FIG. 3A, FIG. 3A is a view taken along arrow C of FIG. 1, and FIG. 3B is a view taken along arrow D of FIG.
The description will be made with reference to FIG. 4 (a) which is an explanatory view of the lifting state of the middle pillar member and FIG.

Reference numeral 1 shown in FIG. 1 is a shield machine, and inside the tunnel machine side of the shield machine 1 is provided an erector device 3 for assembling a segment in the tunnel, and also this erector device. On the lower side of the screw conveyor 3, a screw conveyor 2 is arranged so as to be inclined. Then, at a position on the rear side of the erector device 3 of the screw conveyor 2, a lifting link mechanism 5 as shown in FIGS. 2 and 3,
Middle pillar member mounting device 4 for tunnel having a configuration described later, which includes a winch 6, a wire rope 7 and a hanging metal fitting 8.
Is provided.

The lifting link mechanism 5 of the middle pillar member mounting device 4 is a vertical path that passes through the rotation center of a screw (not shown) of the screw conveyor 2 on the outer periphery of the screw conveyor 2 at the rear position of the erector device 3 of the shield machine 1. The link support bracket 2a is provided so as to project at a predetermined angle with respect to the line so that it can be swung via a horizontal swing fulcrum shaft 5b in the forward / backward direction of the shield machine 1. It is supported.

The link body 5a, which is rockably supported by the rocking fulcrum shaft 5b, is curved so that one end side having the rocking fulcrum shaft 5b as a rocking center has a radius of curvature in the direction of the screw conveyor 2. , A pair of parallel plate members formed in a straight shape on the other end side, and one end side is integrally formed with a hanging roller support shaft 5c and the other end side via a winch side roller support shaft 5d at a predetermined interval. It is assembled to be. A pair of central guide rollers 5e, a pair of upper guide rollers 5f, and a pair of upper guide rollers 5f are provided on each of the swing fulcrum shaft 5b and the lifting / winch side roller support shafts 5c and 5d.
A winch side guide roller 5g and a spacing ring 5 interposed between each pair of guide rollers 5e, 5f, 5g.
h, 5h, 5h are fitted onto each other, and the distance between each pair of guide rollers 5e, 5f, 5g is the same as the distance ring 5h.
Are separated by

Further, the winch 6 is provided on the outer periphery of the screw conveyor 2 at the rear position of the elector device 3 of the shield machine 1 and below the link support bracket 2a for supporting the lifting link mechanism 5. It is mounted downward with a predetermined angle to the vertical line passing through the center of rotation of the screw.

Further, the wire rope 7 is wound around a winch 6, and each spacing ring 5 of the lifting link mechanism 5 is wound.
h. Then, as shown in FIG. 2B, a suspension metal fitting 8 attached to the center pillar member 9 by screwing a nut is connected to the tip of the wire rope 7 which is separated from the spacing ring 5h, and the hoist 6 is used to wind the wire rope. The central pillar member 9 is configured to be lifted by rotating in the direction.

Next, referring to FIGS. 4 (a) and 4 (b), a case will be described in which the center pillar member 9 is horizontally arranged above the tunnel. First, referring to FIG. 4 (a), a method of hoisting the middle pillar member 9 will be described. A position slightly deviated from the longitudinal center of the middle pillar member 9 in the horizontal state at the lower position in the tunnel. When the hanging metal fitting 8 is connected to the position (slightly left of the center in the longitudinal direction in the figure) and the wire rope 7 is wound up by the winch 6, the light weight side on the left side of the connection position is lifted, as shown by the broken line. After gradually inclining, the inclination gradually becomes steep, and then the state becomes vertical, that is, the state becomes vertical. Further, when the wire rope 7 is wound up until the hanging metal fitting 8 reaches the position of the central guide roller of the hoisting link mechanism 5, the entire middle pillar member 9 is hoisted and inverted, and the middle pillar member 9 is lifted to the upper guide. The roller and the central guide roller support it in an inclined state, as shown by the imaginary line.

Next, referring to FIG. 4 (b), how to lift the center pillar member 9 will be described. The middle pillar member 9 is supported in an inclined state by the suspension upper guide roller 5f and the central guide roller 5e. When the wire rope 7 is further wound up from the above state, the middle pillar member 9 moves gradually to be in a state indicated by a broken line while being guided by the suspending upper side guide roller 5f and the central guide roller 5e, while the inclination of the middle pillar member 9 becomes gentle. The middle pillar member 9 is supported in an inclined state by the central guide roller 5e and the winch side guide roller 5g, and the tip on the light weight side is at the attachment position of the middle pillar member 9, that is, the inner wall of the inner upper portion of the assembled segment. Abut.

In the inclined state where the tip on the light weight side is in contact with the mounting position of the center pillar member 9, the winding of the wire rope 7 is temporarily stopped, and the tip on the light weight side is connected by a temporary fixing pin (not shown). Then, after the connection with the temporary fixing pin is completed, the wire rope 7 is hung on the winch-side roller support shaft 5d from the middle pillar member 9 again, and the wire rope 7 is again attached.
When the winding of the intermediate column member 9 is started, one end side of the intermediate column member 9 is connected by the temporary fixing pin, so that the lifting link mechanism 5 swings around the swing fulcrum shaft 5b this time, and the intermediate column member 9 is rotated. Since the large weight side of C is lifted and is in a horizontal state while being supported by the lifting guide roller 5f, the other end side of the lifted middle pillar member 9 may be fixed in a horizontal state.

As described above, according to the center pillar member attaching apparatus of the present invention, the middle pillar member 9 in the horizontal position at the lower position in the tunnel is screwed to the screw conveyor 2 only by winding the wire rope 7 with the winch 6. In addition to hoisting, the wire rope 7 can be wound by the winch 6 and the hoisting link mechanism 5 can be swung to horizontally lift the hoisted middle pillar member 9 to the upper part of the tunnel. Therefore, it is not necessary to dispose two systems of two screw conveyors, belt conveyors, and earth and sand discharging devices in the shield machine as in the mobile carrier device according to the conventional example, and the mobile carrier device according to the conventional example. In the structural comparison with
Since the structure of this middle pillar member mounting device is extremely simple,
There is an excellent effect that it is advantageous in terms of initial cost and running cost of the shield machine 1.

Further, according to the center pillar member mounting device of the present invention, since the middle pillar member 9 is hung by the wire rope 7 and has a high degree of freedom, the position for mounting the middle pillar member 9 can be improved. There is also an effect of improving the arrangement work efficiency that the middle pillar member 9 can be arranged with high efficiency because the alignment can be easily performed.

[0023]

As described above, according to the center pillar member mounting device of the present invention, the middle pillar member in the horizontal position at the lower position in the tunnel is lifted while avoiding the screw conveyor. Since the center pillar member can be lifted horizontally above the tunnel, it is not necessary to provide two screw conveyors in the shield machine as in the conventional example, and it is necessary to install two systems of belt conveyors and earth and sand discharging devices. Therefore, it is advantageous in terms of initial cost and running cost of the shield machine.

[Brief description of the drawings]

FIG. 1 is a schematic vertical cross-sectional side view showing an entire downhole facility including an inner pillar member attaching device for a tunnel, of an inner pillar member attaching device for a tunnel according to an embodiment of the present invention.

2 (a) is a sectional view taken along line AA of FIG.
FIG. 2B is an enlarged view of a portion B in FIG.

3 (a) is a view taken in the direction of arrow C in FIG. 1, and FIG. 3 (b) is a view taken in the direction of arrow D in FIG. 3 (a).

FIG. 4 (a) is an explanatory view of a lifting state of a middle pillar member, and FIG. 4 (b) is an explanatory view of a lifting state of a middle pillar member.

FIG. 5 relates to a conventional example, FIG. 5 (a) is a vertical sectional side view showing an entire underground facility including a mobile carrier, and FIG. 5 (b) is an enlarged side view of an upper work carriage in the mobile carrier. .

FIG. 6 is a plan cross-sectional view showing an entire downhole facility including a mobile carrier according to a conventional example.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Shield excavator, 2 ... Screw conveyor, 2a ... Link support bracket, 3 ... Erector device, 4 ... Middle pillar member mounting device, 5 ... Lifting link mechanism, 5a ... Link body, 5
b ... rocking fulcrum shaft, 5c ... suspension upper roller support shaft, 5d ... winch side roller support shaft, 5e ... central guide roller, 5f
... Suspended guide roller, 5g ... Winch side guide roller, 5h ... Spacer ring, 6 ... Winch, 7 ... Wire rope,
8 ... Hanging metal fittings, 9 ... Middle pillar member.

Claims (1)

[Claims] 1. A device for attaching a middle pillar member for a tunnel, which is arranged at a rear position of an erector device on an outer peripheral portion of a screw conveyor of a shield machine and which pulls up a middle pillar member to be horizontally arranged at an upper portion in a tunnel. In addition, the shield machine is swingably supported via a horizontal swinging fulcrum shaft in the forward and backward directions, and roller supporting shafts are provided at both ends sandwiching the swinging fulcrum shaft. A lifting link mechanism in which a pair of guide rollers are externally fitted to each of the dynamic fulcrum shaft and the roller support shaft while maintaining a distance with a distance ring, and the lifting link mechanism is disposed below the lifting link mechanism. A winch and a wire rope that is wound around the winch, wound up and rewound, hung on the spacing ring of the lifting link mechanism, and equipped with a hanging metal fitting for hanging the middle pillar member for the tunnel at the tip. Empty An intermediate pillar member mounting device for a tunnel, which is characterized in that