JPH06167200A - Rail construction device of shield tunnel - Google Patents

Abstract

PURPOSE:To reduce a construction period and to promote safety by assembling a rail unit capable of bending widthwise at the outside of a tunnel in advance, and conveying the rail unit in a state to fold it in two parts to the inside of the tunnel. CONSTITUTION:A plurality of rail materials 7 are fixed to sleepers 8 to assemble a rail unit formed of foldable units 10a and 10b at the outside of a tunnel. After that, the rail unit 10 is folded in an angle-shape and is mounted on a conveying truck 3, and the conveying truck 3 is ran to the rear of a shield excavator along a conveying existing rail 4. Then, the units 10a and 10b are clamped by lifting hooks 41 and 42 of a developing device 25 to lift them from the conveying truck 3, and an extension holder 24 is moved in the direction of the excavator along guide rails 23 and is positioned at a specific position. Horizontal platforms 27 and 28 are separated from each other to develop the rail unit 10 in the shape of a straight line, and after it is positioned, the hooks 41 and 42 are lowered to suspend the rail unit 10 on the front sides of the ends of the existing rails 4 and 6 to install.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rail laying device in a shield tunnel.

[0002]

2. Description of the Related Art Conventionally, when constructing a shield tunnel by excavation, a work rail for running a trailing truck such as a controller connected to a rear portion of the shield machine and moving, and avoiding the trailing truck. It is necessary to lay the transportation rails and the like for traveling the transportation vehicle for transporting the segment to the position of the segment assembly device at the rear of the shield machine in accordance with the tunnel excavation.

Conventionally, when laying a rail in a shield tunnel, a plurality of rail materials, sleepers, fastening bolts, etc. are shielded by using a carrier truck for segment transportation that runs on an existing rail for transportation. Carry it to the rear part and use a segment transfer hoist provided at the rear part of the shield machine to hang the sleepers on the carrier truck and place it on the front side of the end of the existing rail. After that, the worker uses the fastening device to fasten with the fastening bolts.

[0004]

However, in the conventional rail laying method in the shield tunneling tunnel described above, the sleepers are arranged in front of the ends of the existing rails, the rail members are arranged on the sleepers, and the fastening bolts are used. Since all the work such as fastening by the work is done in a narrow space at the rear of the shield machine, the workability is poor and it is forced to work for a long time in a place where there is a danger such as flooding. Therefore, there is a problem in safety, and further, there is a problem that it takes a long time to lay the rail and the construction period is extended.

The present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to simplify the work of laying a rail in a shield tunnel to shorten the construction period and improve the safety.

[0006]

According to the present invention, a plurality of rail members having a required length are fixed by sleepers and can be folded in two in the width direction so that they can be transported to the rear part of the shield machine through the equipment loading space. A rail unit consisting of various unit parts, mounted in a folded state and traveling on an existing transportation rail, and a transportation vehicle provided on the existing transportation rail arranged in parallel with the transportation existing rail. A rail extension carriage, an extension mount supported by the rail extension carriage so as to be movable in the shield machine direction, and a pair of traverses on the extension mount whose position in the width direction can be adjusted separately. A rail tunnel laying device for a shield tunnel, wherein each of the traverses is provided with a deploying device having a lifting hook capable of lifting and lowering to separately clamp the unit parts of the rail unit, and The rail member one longitudinal end of the rail unit, in which according to the rail-system, of the shield tunnel, characterized in that it comprises a guide member for positioning in the width direction at the time of laying of the other rail unit.

[0007]

According to the first aspect of the invention, it is possible to fold in the width direction.
A rail unit composed of two unit parts is pre-assembled in a place with good workability outside the tunnel, a large number of rail units thus assembled are prepared, and the rail unit is folded in two behind the tunnel. Place it on the carrier truck and run the carrier truck to the rear of the shield machine.

When the carrier truck moves to the lower part of the rail extension carriage, the traveling is stopped, both unit portions of the rail unit are clamped by the lifting hook of the expansion device and lifted from the carriage carriage, and the extension rack is directed toward the shield machine. Move and position the rail unit above the laying position.

Subsequently, the rail unit supported by the lifting hooks is linearly expanded by moving the traverse stand of the expansion device away from each other, and after the rail units are positioned in the width direction, the lifting hooks are moved. By lowering, the rail unit is hung and installed in front of the end of the existing rail.

According to the second aspect of the present invention, since one end of the rail unit in the longitudinal direction of the rail member is provided with a guide member for positioning the other rail unit in the width direction, the rail unit is lowered. Positioning in the width direction at the time of suspending and installing on the front side of the end of the existing rail can be performed easily and accurately.

[0011]

Embodiments of the present invention will be described below with reference to the drawings.

1 to 6 show that a rail is added to a front side of an end of an existing rail in a shield tunnel to install the rail.
FIG. 2 shows an embodiment of the invention of FIG. 1 in which two existing transportation rails 4 on which a transportation vehicle 3 of a segment 2 travels, and one of the existing transportation rails 4 are provided at the rear portion of the shield machine 1. There are three existing rails 6 for work, one of which is arranged on the other side and two of which are arranged on the other side so that the succeeding dolly 5 such as a controller may travel.

As shown in FIGS. 3, 4 and 7, the existing rails 4 and 6 have a plurality of rail members 7 each having a required length.
The rail unit 10 preassembled by fixing the rails to the sleepers 8 arranged at required intervals with the fastening bolts 9.
It is constructed by sequentially adding.

The rail unit 10 has a transportable length and a widthwise intermediate portion so that the rail unit 10 can be transported to a rear portion of the shield machine 1 through an equipment loading space 11 (see FIG. 3) avoiding a trailing carriage. The unit part 1 in which the sleepers 8 are foldably connected to each other through the pin joints 12
It is composed of 0a and 10b. Further, a clamp member 13 made of an angle member or a rod member for lifting is provided at an intermediate position in the width direction of each unit 10a, 10b, and the lower surface of each unit 10a, 10b has a shape when folded. A stopper 14 for holding is attached.

The carrier truck 3 traveling on the existing carrier rails 4 is provided with a positioning tool 15 for positioning and mounting the rail unit 10 in a mountain-shaped folded state. Although the segment carriage can be used as it is as the carriage 3 as a matter of course, a new carriage for rail transport may be provided.

Further, at the rear portion of the shield machine 1 (for example, between the shield machine 1 and the succeeding carriage 5), a gate which can also serve as the outermost existing work rail 6 on which the succeeding carriage 5 travels can be used. A rail extension cart 18 of a mold is provided. The rail extension cart 18 has a rear leg 19 and a front leg 20 having a gate shape, and further, on the upper portions of the rear leg 19 and the front leg 20,
A guide beam 21 is provided extending from the rail-extended carriage 18 toward the shield machine 1 and onto the tunnel 16 assembled by the segment 2. In the case of FIG. 2, the segment conveyor 1 is provided on the upper surface of the guide beam 21.
7 is provided so that the segment 2 can be conveyed from the rear toward the erector 22.

The guide beam 2 of the rail extension cart 18
1, an extension frame 24 is installed via a guide rail 23 so as to be movable in the front-rear direction A. The extension base 24 is provided with a deployment device 25 shown in FIGS.

The unfolding device 25 straddles a traverse rail 26 such as a linear guide which is provided to extend in the width direction (horizontal direction) at the front and rear of the lower surface of the extension frame 24 and to extend across the front and rear traverse rails 26. And a pair of pedestals 27 that move in the width direction B,
Equipped with 28. As shown in FIG. 5, the traverse bases 27 and 28 are arranged in parallel with the front and rear traverse rails 26 and are separately driven to rotate by a traverse motor 29. Are engaged with each other, and the position in the width direction B can be separately adjusted by the operation of the traverse motor 29.

Below the traverses 27 and 28,
Vertically extending guide guide 32 such as linear guide
Are fixed to the front and rear, and the up-and-down guide guides 32 at the front and rear
Elevating stands 33, 34 are provided so as to be able to move up and down. Each of the lifts 33, 34 has a front and rear lift guide 32.
And a lifting motor 35 arranged in parallel with
Of the nut 39 on the lifting drive shaft 38 that is simultaneously driven to rotate by the operation of the
, And the up-and-down movement C is performed by the operation of the up-and-down motor 35.

Each of the left and right lifts 33, 34 has
Lifting hooks 41, 42 having engaging portions 40 on the front and rear sides and capable of separately clamping the clamp members 13 of the unit portions 10a, 10b of the rail unit 10 are provided by an elevating cylinder 43 so as to be vertically movable. There is. Further, the lifting hooks 41 and 42 have a deeper engagement depth of the engaging portion so that they do not come off when the clamp member 13 is clamped, or a retaining stopper 44 is provided as shown in FIG. A double hook or the like may be used, and the lifting hooks 41 and 42 may be provided with a drive device 45 to automatically open and close a stopper for preventing the clamp member 13 from coming off. Reference numeral 46 in FIG. 1 denotes a power unit of the rail extension cart 18.

Next, the procedure for laying the rail unit 10 on the front side of the ends of the existing rails 4 and 6 will be described.

The rail unit 10 has a plurality of rail members 7 having a required length as shown in FIG.
The rail unit 10 is assembled by fixing it to the sleeper 8 having the pin joint 12 through the fastening bolts 9, and a large number of the rail units 10 thus assembled are prepared.

The rail unit 10 is connected to the tunnel 16
As shown in FIG. 3, it is folded into a mountain shape by a pin joint 12 and placed on the carrier 3 in this state, and in this state, the carrier 3 is shielded along the existing rail 4 for transportation. 1 Transport to the rear. At this time, since the rail unit 10 is folded, it can be easily transported through the equipment loading space 11. Further, at this time, as shown in FIG. 3, the lifting hooks 41, 3 of the expansion device 25 provided on the extension base 24 of the rail extension carriage 18 are provided.
1 is placed on the left and right positions in standby so as not to interfere with the rail unit 10 which is placed on the carriage 3 and enters.

When the carriage 3 moves to the lower part of the unfolding device 25, the traveling is stopped, and the lifting hooks 41 and 42 are moved up and down and the traverse stands 27 and 28 are traversed to lift the hoisting hook 4.
1, 42 to clamp the clamp member 13 of the rail unit 10, and subsequently, as shown in FIG.
1, 42 are lifted and the rail unit 10 is moved by the carriage 3
Lift from above.

Subsequently, the extension mount 24 is attached to the shield machine 1
The rail unit 10 is moved in the direction, and the front-rear direction position is determined so as to be directly above the position where the rail unit 10 is laid.

Next, while adjusting the position of the lifting hooks 41, 42 in the width direction, the traverse stands 27, 28 are moved in a direction in which the lifting hooks 41, 42 are separated from each other. As a result, the rail unit 10 supported by the lifting hooks 41 and 42 is pulled so that the clamp members 13 of the unit portions 10a and 10b are separated from each other.
The position in the width direction is determined at the same time as being developed in a straight line like 0. At this time, the mounting position of the clamp member 13 provided on each of the unit portions 10a and 10b of the rail unit 10 is set to be located at the position of the center of gravity of each of the unit portions 10a and 10b or outside (on the side opposite the pin joint 12). In this case, the expansion can be easily performed with a small force.

Subsequently, the lifting hooks 41, 42 are lowered via the lifting drive shaft 38, and the lifting cylinder 43 is further extended to lower the rail unit 10 to the front side of the ends of the existing rails 4, 6. It is installed on the inner surface of the tunnel 16 by unloading and then releasing the clamps of the lifting hooks 41 and 42. At this time, an elevating cylinder 43 is provided to make up for the shortage of the movement stroke of the elevating drive shaft 38. However, when the stroke of the elevating drive shaft 38 is sufficient, the elevating cylinder 43 is provided.
Can be omitted.

FIG. 11 and FIG. 12 show an embodiment of the invention of claim 2, which is the rail member 7 of the rail unit 10.
A guide member 47 that guides the position in the width direction when the other rail unit 10 is laid is attached to one end portion in the longitudinal direction (end portion on the shield machine 1 side).

According to the second aspect of the present invention, one end of the rail unit 10 in the longitudinal direction of the rail member 7 is provided with a guide member for guiding the position in the width direction when the other rail unit 10 is laid. , The rail unit 10
Is lowered to the front of the ends of the existing rails 4 and 6 to facilitate positioning in the width direction when installing and
Installation accuracy can be easily increased. In addition, the rail member 7 of the rail unit 10 is guided by the guide member 47.
It is also possible to eliminate the need to connect the members together or use the guide member 47 as a connecting member.

Further, in the above-described embodiment, the rail extension carriage 18 is provided immediately after the shield machine 1, but the rail extension carriage 18 is made to follow the trailing carriage 5 and the like by running the tires. The rail unit 10 may be installed in the rear part of the trolley 5 in the rear part of the trolley 5.

[0031]

According to the first aspect of the present invention, the rail unit that can be folded in two in the width direction is provided in the rear portion of the shield machine and the transport carriage that conveys the folded rail unit to the rear portion of the shield machine. An extension platform provided so as to be movable in the shield machine direction along the rail extension vehicle, and a deployment device provided with a lifting hook capable of ascending and descending to each of a pair of traverses attached to the installation vehicle Therefore, by moving the left and right lifting hooks up and down and left and right, it is possible to easily lift and deploy the rail unit that has been transported to the rear part of the shield machine by the transport carriage, and position it at the installation position to easily install it. Therefore, the laying work of the rail can be simplified and the construction period can be shortened, and the excellent effect of improving the safety of the laying work can be obtained.

According to the invention of claim 2, a guide member for guiding the position in the width direction when another rail unit is laid is provided at one end of the rail unit in the longitudinal direction of the rail member. The positioning in the width direction at the time of descending and suspending to the front side of the end of the existing rail for installation can be facilitated, and the installation accuracy can be easily enhanced.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of the invention of claim 1;

FIG. 2 is a detailed view of the rail-extending carriage portion of FIG.

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

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

5 is a view taken in the direction of the arrows VV in FIG.

FIG. 6 is a detailed plan view of a VI portion of FIG.

FIG. 7 is a plan view of a rail unit.

FIG. 8 is a side view showing a detailed example of a lifting hook.

FIG. 9 is a front view showing the rail unit in the middle of development.

FIG. 10 is a front view showing a state in which the rail unit is unfolded and installed.

FIG. 11 is a plan view showing an embodiment of the invention of claim 2;

12 is a view taken in the direction of arrow XII-XII in FIG.

[Explanation of symbols]

 1 shield machine 3 carrier truck 4 existing rail for transport 6 existing rail for work 7 rail material 8 sleepers 10a unit part 10b unit part 10 rail unit 11 equipment carry-in space 18 rail extension trolley 24 extension mount 25 deployment device 27 traverse stand 28 Traverse stand 41 Lifting hook 42 Lifting hook 47 Guide member

Claims (2)

[Claims] 1. A rail unit comprising a plurality of rail members each having a required length fixed by a sleeper and comprising a unit portion capable of being folded in half in a width direction so as to be transported to a rear portion of a shield machine through an equipment loading space. A transportation carriage that is placed in a folded state and travels on an existing transportation rail, and a rail extension carriage that is provided so as to travel on the existing transportation rail that is installed in parallel with the transportation existing rail, An extension pedestal supported by a rail extension trolley so as to be movable in the shield machine direction, and a pair of traverses whose position in the width direction can be separately adjusted are arranged on each of the traverses. A rail laying device for a shield tunnel, comprising: a deploying device having a lifting hook capable of lifting and lowering, which can separately clamp the unit parts of the rail unit. 2. The rail laying of the shield tunnel according to claim 1, wherein a guide member for positioning in the width direction when laying another rail unit is provided at one end of the rail unit in the longitudinal direction of the rail material. apparatus.