JPH084496A - Ring shield machine segment assembly equipment - Google Patents

Abstract

PURPOSE:To install the transfer equipment which surely transfers segments in the circumferential direction of the whole of a ring shield machine, from a working pit, even if the working pit exists at one place, and can arrange the segments efficiently in succession, freely from the obstruction for a propulsion jack. CONSTITUTION:As for a ring shield machine consisting of a shield machine equipped with the inside and outside skin plates 11a and 11b through the connection of the unit excavating machines 6a and 6b in a ring form, each propulsion jack 8 is installed vertically, keeping an interval on the unit excavating machines 6a and 6b. A ring shaped guide rail 18 is arranged in the peripheral direction of the whole of the ring shield machine so as to pass through between the propulsion jack 8. On a segment holding body which travels on the guide rail 18, a parallel link arm 23 which catches the segment and is positioned above and below a holding body 19.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a segment assembly device for a ring shield machine used in a ring shield construction method for efficiently constructing a tunnel having a large cross section and an arbitrary shape.

[0002]

2. Description of the Related Art In contrast to the normal shield construction method, in which a tunnel is constructed by excavating the entire cross section in a circular shape, the ring shield construction method excavates only the outer shell portion of an arbitrary shape in a ring shape and This is a method of constructing a lining body at the tail part and then excavating earth and sand inside to complete the tunnel.

FIG. 9 shows an outline of such a ring shield construction method. In the figure, reference numeral 1 is a ring shield machine, in which only a lining body portion is preliminarily excavated, and therefore a ring having a double inner and outer skin plate is used. Excavators are used.

Reference numeral 2 is a work pit incorporated in the shield machine 1, which is a space required for carrying out excavated soil, carrying and assembling segments 3 described later, and placing concrete. This work pit 2 is secured behind the shield machine 1 by a segment 3 as a guide hole communicating to the rear, and is used for a common groove or the like after the completion of the tunnel.

The segment 3 is assembled while being pushed out from the work pit 2 in the ring circumferential direction. Such an assembly is possible because the water pressure acting on the lining from the inside and outside of the ring is almost balanced before the excavation of the internal ground 5 and the generated cross-sectional force is extremely small. Furthermore, before excavating the internal ground 5, the inside of the segment 3 is filled with superfluid concrete 4 or the like to form a synthetic segment.

The excavation of the internal ground 5 is performed after the ring-shaped lining body is completed. Therefore, the excavated soil does not become an industrial waste and is easily treated.

[0007]

The ring shield machine 1 of FIG. 9 is sequentially extruded from the work pit 2 in the ring circumferential direction, but the slide length of the segment 3 is shortened as much as possible to ensure smooth extrusion. Is 4 up, down, left and right
The pieces are arranged at equal intervals. Further, although the slide of the segment 3 is not shown, an engaging groove is provided on the rear end face of one segment 3 and an engaging protrusion formed on the front end face of the other segment 3 in the engaging groove continuous between the rings. Fit the ridge and use the engaging groove as a guide.

As described above, when a plurality of work shafts 2 are provided as in the prior art, it is necessary to provide a carry-in device and a lifter for the segment 3 for each work shaft 2, resulting in a complicated overall structure of the ring shield machine 1. Become.

The object of the present invention is to eliminate the disadvantages of the above-mentioned conventional example, to reliably transfer the segments from one working pit in the circumferential direction of the entire ring shield machine and to arrange them sequentially, and also to obstruct the propulsion jack. It is an object of the present invention to provide a segment assembly device for a ring shield machine which can be provided so as not to be damaged.

[0010]

In order to achieve the above object, the present invention provides a ring shield machine in which unit excavators are connected in a ring shape to form a shield machine having double skin plates inside and outside. Proper jacks are provided at intervals above and below, and ring-shaped guide rails are arranged in the circumferential direction of the entire ring shield machine so as to pass between the propulsion jacks. A parallel link arm for gripping the base plate and positioning the parallel link arm above and below the holder, and the parallel link arm is provided with a turning means of a fastening long bolt internally provided in the segment; Is that a piece is provided for each unit excavator, and when the unit excavators are connected in a ring shape, the pieces are assembled into a ring shape. Is shall.

[0011]

According to the present invention as set forth in claim 1, the segment conveyed in the working pit is lifted by the lifter and is held by the parallel link arm. Then, it is moved as it is in the circumferential direction of the entire ring shield machine along the guide rails, and is conveyed to the assembled position by the segment holder.
At that time, the segments are relatively narrow inside and outside of the unit excavator while maintaining the intermediate position at the same level as the segment holder.
It can be transferred between heavy skin plates in a relaxed manner.

When the segments are moved to the position where they are assembled, the parallel link arms are positioned and assembled on the upper and lower sides. By thus arranging the segments in a double arrangement for the outer and the inner, it is easy to carry the small size. Even with this, the required lining thickness can be secured.

According to the second aspect of the present invention, in addition to the above-mentioned action, the parallel link arm has a rotating means for a fastening long bolt provided in the segment, so that the segment can be fastened as it is. It is possible to realize further automation.

According to the third aspect of the present invention, the ring shield machine itself can be easily assembled by connecting the unit excavators in a ring shape. Since the pieces are assembled in a ring shape together with the assembly, the number of installation steps can be simplified.

[0015]

Embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 is a vertical sectional front view showing an example of a ring shield machine provided with a segment assembling apparatus of the present invention, FIG. 2 is a vertical sectional side view of the same, and FIG. 3 is a perspective view of the same.

First, the entire ring shield machine 1 will be described. As shown in FIG. 3, the upper half of the ring shield machine 1 has a tubular shape protruding in a hood shape, and this tubular shape has a large number of unit excavators 6a. It was formed by connecting one unit excavator 6b.
The unit excavator 6a has a curved strip shape in which a cylinder is vertically divided in the axial direction, and the unit excavator 6b is located at the top to form the working pit 2 and has a cross-sectional fan shape with a wide excavation area. is there.

Each of the unit excavators 6a and 6b is provided with a deformed cutter head 7 at its front end, and the propulsion jacks 8 are arranged rearward with a space therebetween in the vertical direction. In the figure, 9 is a drive motor for the cutter head 7, and 10 is a segment. In addition, the unit excavators 6a, 6b have outer skin plates 11a,
It has an inner skin plate 11b.

As a drive mechanism for the cutter head 7,
The bearing motor is rotatably supported by the drive motor 9
The first rotating drum 12 driven to rotate by the second rotating drum 14, the second rotating drum 14 eccentrically connected to the first rotating drum 12 by the eccentricity adjusting jack 16, and the second rotating drum 14
And a drive shaft 15 connecting the cutter head 7 with the cutter head 7.

To perform excavation, the drive motor 9 is started, whereby the first rotary drum 12 is rotationally driven. The rotation of the first rotary drum 12 is driven by the second rotary drum.
The second rotary drum 14 is also transmitted to the second rotary drum 14, but the rotation of the second rotary drum 14 is aligned with that of the first rotary drum 12, so that the second rotary drum 14 is Drive shaft of the cutter head 7 which is connected via the bearing 13
The cutter head 7 does not rotate, and the cutter head 7 remains stopped.

Therefore, the eccentricity adjustment jack 16 is extended to eccentrically rotate the second rotary drum 14 with respect to the first rotary drum 12, and the second rotary drum 14 is eccentrically rotated. As a result, the drive shaft 15 of the cutter head 7 is rocked by the amount of eccentricity of the second rotary drum 14, and the cutter head 7 excavates by rocking drive. In addition, each unit excavator 6a,
The cutter heads 7 of the unit excavator 6b are arranged in close contact with each other to form a large ring-shaped large-sized cutter head, and there is no unexcavated portion by swinging in the same direction. Can be drilled at.

A ring-shaped guide rail 18 is arranged in the entire circumferential direction of the ring shield machine 1 so as to pass between the propulsion jacks 8 which are spaced above and below the unit excavators 6a and 6b. The holder 19 is installed so that it can run freely. The piece 18a of the ring-shaped guide rail 18 is incorporated in advance for each unit excavator 6a, 6b, and this piece is used when connecting the unit excavators 6a, 6b.
18a are automatically connected to each other to form a ring-shaped guide rail 18
To form the whole.

The segment holder 19 may be driven by a driving roller as a traveling mechanism, but in this embodiment, the chain 20 is arranged in a ring so as to be aligned with the guide rail 18 as shown in FIGS. The chain 20 is rotated by a sprocket 21 provided as a drive gear on the side of the unit excavators 6a and 6b. Then, the segment holder 19 is pulled by the chain 20. In the figure, 22 is a drive motor for the sprocket 21.

The segment holder 19 is provided with a parallel link arm 23 for gripping the segment 10 so as to be movable back and forth by a cylinder 24.
Further, a driver 26 is attached to the parallel link arm 23 as a turning means of a fastening long bolt 25 provided in the segment 10 also as a grip for the segment 10.

Under the unit excavator 6b, a rail 29 is laid in the length direction of the unit excavator 6b below the guide rail 18, and a truck 28 having a lifter 27 by a lifting jack 27a runs on the rail 29. Arrange as possible.

Reference numeral 30 in the drawing denotes a segment feeding device for receiving the segment 10 from the carrying-in means of the segment (not shown), which is a slide arm 30c which is rotated by a motor 30f with respect to the main body 30a and is moved back and forth by a cylinder 30b. Lifting cylinder 30d provided on the head portion of the slide arm 30c
The segment feeding device 30 is installed corresponding to the truck 28 having the lifter 27.

Next, the usage and operation will be described. The segment 10 is carried from the rear of the work pit 2 by a segment loading means such as a truck, not shown, and placed on the segment feeding device 30 to grip the segment. It is locked at part 30e.

The segment 10 locked by the segment grip portion 30e is moved forward and backward and up and down by the slide arm 30c and the elevating cylinder 30d, and is passed to the lifter 27 of the carriage 28.

When the lifter 27 is raised to bring the segment 10 close to the segment holder 19, the segment holder 19 is moved.
Then, the parallel link arm 23 moves back and forth in the cylinder 24, and the driver 26 at the tip is fitted to the end of the fastening long bolt 25 provided in the segment 10 to lock the segment 10. FIG.
At that time, the set pin 31 may be interposed as shown in FIG.

The segment holder 19 which holds the segment 10 by the parallel link arm 23 as described above is dragged by the chain rock 20 which is rotated by the drive motor 22 when the chain 20 is pulled by the sprocket 21, and is guided along the guide rail 18. After moving, the ring shield machine 1 is moved in the circumferential direction from the unit excavator 6b to the unit excavator 6a at the place where the segment 10 should be assembled.

At this time, since the parallel link arm 23 maintains the intermediate position, the segment 10 comes to the intermediate position at the same level as the segment holder 19, and the outer skin plates 11a of the unit excavator 6a having a relatively narrow inner and outer double. Inner skin plate
It can be transferred between 11b with plenty of space.

Once the segment 10 has been transferred to the position where it is assembled, whether the segment 10 is for outer or inner use and the segment 10 is positioned above or below, and the driver 26 is driven as it is, the segment 10 Reference numeral 10 is a joint between the long bolts 25 for fastening the rings.

[0032]

As described above, the segment assembling device for the ring shield machine according to the present invention has
It is possible to reliably transfer the segments from the work pit in the circumferential direction of the entire ring shield machine and efficiently arrange them sequentially, and also to provide a transfer facility so as not to interfere with the propulsion jack.

[Brief description of drawings]

FIG. 1 is a vertical sectional front view showing an example of a ring shield machine provided with a segment assembling apparatus of the present invention.

FIG. 2 is a vertical sectional side view showing an example of a ring shield machine provided with the segment assembling apparatus of the present invention.

FIG. 3 is a perspective view showing an example of a ring shield machine provided with the segment assembly device of the present invention.

FIG. 4 is a vertical cross-sectional rear view showing the assembled state of the outer segment of the segment assembly device of the present invention.

FIG. 5 is a vertical cross-sectional rear view showing the assembled state of the inner segment of the segment assembly device of the present invention.

FIG. 6 is a vertical sectional side view of the segment assembling apparatus of the present invention.

FIG. 7 is a plan view of the segment assembly device of the present invention.

FIG. 8 is a partially cutaway plan view of the segment assembling apparatus of the present invention in a state in which a segment is gripped.

FIG. 9 is a perspective view showing an example of a ring shield method.

[Explanation of symbols]

1 ... Ring shield machine 2 ... Work pit 3 ... Segment 4 ... Concrete 5 ... Internal ground 6a, 6b ... Unit excavator 7 ... Cutter head 8 ... Propulsion jack 9 ... Drive motor 10 ... Segment 11a, 11b ... Skin plate 12 ... 1st rotary drum 13 ... Bearing bearing 14 ... 2nd rotary drum 15 ... Drive shaft 16 ... Eccentricity adjustment jack 18 ... Guide rail 18a ... Piece 19 ... Segment holder 20 ... Chain 21 ... Sprocket 22 ... Drive motor 23 ... Parallel link arm 24 ... Cylinder 25 ... Fastening bolt 26 ... Driver 27 ... Lifter 27a ... Lifting jack 28 ... Truck 29 ... Rail 30 ... Segment feeding device 30a ... Main body 30b ... Cylinder 30c ... Slide arm 30d ... Lifting cylinder 30e ... Segment Gripping part 30f ... Motor 31 ... Set pin

Claims (3)

[Claims] 1. A unit excavator is connected in a ring shape to form an inside and an outside 2.
In a ring shield machine with a heavy skin plate, the unit excavator is provided with vertical jacks at intervals, and a ring-shaped ring is formed in the circumferential direction of the entire ring shield machine so as to pass between the jacks. A segment assembly device for a ring shield machine, in which a guide rail is provided, and a parallel link arm that grips the segment and is positioned above and below the support body is provided on a segment holder that runs on the guide rail. . 2. A segment assembling apparatus for a ring shield machine according to claim 1, wherein the parallel link arm includes a rotating means for a fastening long bolt provided in the segment. 3. The ring-shaped guide rail is provided with a piece thereof for each unit excavator, and when the unit excavators are connected in a ring shape, the pieces are assembled in a ring shape with each other. Ring shield machine segment assembly equipment.