JPH0442400Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) This invention is a composite circular shield tunneling machine consisting of, for example, a cocoon-shaped cocoon shape, in which a plurality of circular shield tunneling machine parts are partially overlapped and combined into one body. The present invention relates to a segment erector device, and particularly to a segment erector device to which a segment center column can be assembled.

(Prior Art) Recently, a compound circular shield excavator capable of excavating a double track underground tunnel has been proposed, as described in, for example, Japanese Patent Application Laid-Open No. 57-197395. The tunnel excavated by a machine is
Since the cross-sectional shape is a combination of a plurality of circular shapes partially overlapped, and the width of the tunnel is wide, it is necessary to erect a segment center pillar as a support at the overlapping part of each circular tunnel part. By the way, when erecting such a center column, conventionally, this has been done using a device exclusively for erecting the center column, which is separate from the erector device for assembling segments.

(Problem to be solved by the invention) The erection work of the center pillar using a conventional dedicated device is performed only after the segment assembly work using the erector device. As a result of the time lag, the assembled segment deforms when the center pillar is erected (incorporated into the segment), making it difficult to assemble the center pillar smoothly.

This idea was made in view of the above points, and the aim is to provide a segment erector device for a compound circular shield excavator, which allows for the assembly of segments as well as the incorporation of the center column, and also allows smooth incorporation of the center column. That is.

(Means for Solving the Problems) The gist of this invention to achieve the above-mentioned purpose is that a large number of A guide roller is disposed, a circular guide ring is rotatably disposed on each of the guide rollers with a gap of at least the width of a tunnel mid-column between adjacent guide rings, and a hydraulic cylinder is attached to each circular guide ring. The erector device main body is fixedly provided with a segment piece gripping mechanism that can move in and out in the radial direction through the radial direction, and the erector device main body is configured to fit within the circular guide ring when the hydraulic cylinder is in the most contracted state. be.

(Function) According to the segment erector device of this invention, the guide ring of each circular shield tunneling machine section is rotated, and the erector device main body fixed to this ring is moved to an arbitrary position, and each circular tunnel section is moved. At the same time, the segment pieces supplied near the bottom of each tunnel are transported to a predetermined location and assembled, and at the same time, the center column of the segment is transported and assembled between the segments of each circular tunnel section by the erector device body. .

(Example) Hereinafter, an example of this invention will be described based on the drawings.

Figure 1 is a front view of the rear end of a compound circular shield tunneling machine equipped with the proposed segment erector device.
Figure 2 is a view taken along the - line in Figure 1, and Figure 3 is a view of Figure 1.
FIG. 6 is an operational diagram showing a manner in which the middle column is conveyed by the segment erector device shown in the figure.

In the figure, 1 is a form in which two circular shield tunneling machine parts 2 are partially overlapped and combined into one.
Daruma-shaped shield excavator body seen from the rear, 3
is a shield jacket.

4 is a guide roller, and this guide roller 4 is
They are disposed at intervals in the circumferential direction along the inner circumferential surface of the inner shield wall 2a of each excavator section 2.

Reference numeral 5 denotes a pair of circular guide rings, and each guide ring 5 is rotatably arranged on the guide roller 4 of each excavator section 2. Note that the outer diameter of the guide ring 5 is between the guide rings 5 on both sides.
The gap is set to be slightly wider than the width of the segment center pillar B, which will be described later.

Reference numeral 6 denotes a segment erector device main body having a substantially bow shape. It moves in and out of the guide ring 5 in the radial direction by the expansion and contraction movement of the guide ring 5. Reference numeral 8 denotes a gripping mechanism for the segment piece A and the segment center pillar B arranged in the center of the erector device main body 6, and includes a segment piece gripping tool 9 and steady rest cylinders 10 on both sides of the gripping tool 9.
are configured to be movable in the front-back direction by a sliding cylinder 11.

As shown in FIG. 1, the erector device main body 6 is configured such that the segment piece gripper 9 grips the middle pillar B, and the middle pillar B fits within the segment A when the hydraulic cylinder 7 is in the most contracted state. It is configured. Further, the guide ring 5 is rotated via a drive roller by connecting a part of the guide roller 4 to a drive device (not shown).

Next, the manner of use of the segment erector device of the above-described embodiment will be explained.

With the excavation work of the shield excavator body 1, the shield jack 3 is extended to advance the excavator body 1, and then the shield jack 3 is contracted to form a space between the existing segment A and the shield jack 3. do. Then, the segment piece A supplied near the bottom of each circular tunnel portion is held by the segment piece gripping tool 9, and the steady rest jacks 1 on both sides are held.
With the segment piece A fixed at 0, rotate the guide ring 5 to move the erector device body 6 to a predetermined position, extend the hydraulic cylinder 7,
Depending on the case, the segment piece A is assembled by adjusting the position in the front and back direction using the sliding cylinder 11. In this way, the Erector device main body 6,
Assembling the segments is performed while moving the segment pieces A between the supply position and the assembly position.

Then, when the assembly work of the segments of each circular tunnel part is completed, the segment piece gripping tool 9 of one erector device main body 6 is made to grip the segment center column B, and the hydraulic cylinder 7
Bring it to its most contracted state, rotate it 90 degrees counterclockwise from near the bottom as shown in Figure 3, and in this state,
By extending the hydraulic cylinder 7 and adjusting the position in the longitudinal direction by the sliding cylinder 11 as the case may be, the middle pillar B is assembled and erected between the segment pieces A.

(Effects) As explained above, since the segment erector device of this invention has the above-described configuration, it has the following effects.

In other words, since the erector device body installed at the rear end of each circular shield excavator is used to assemble the segments as well as the middle pillar, the middle pillar can be assembled at the segment assembly position. Since there is almost no time lag between assembling the segments and erecting the center column, there is little deformation of the segments after assembly, and the center column can be assembled smoothly, compared to the conventional method of erecting the center column using specialized equipment. Therefore, the work efficiency is high and the overall work time including the center pillar is shortened, and furthermore, there is no need for special equipment for erecting the center pillar, so the cost of the entire equipment can be reduced.

[Brief explanation of the drawing]

Figure 1 is a front view of the rear end of a compound circular shield tunneling machine equipped with the proposed segment erector device;
Figure 2 is a view taken along the - line in Figure 1, and Figure 3 is a view of Figure 1.
FIG. 6 is an operational diagram showing a manner in which the middle column is conveyed by the segment erector device shown in the figure. 1... Composite circular shield tunneling machine body, 2...
Circular shield tunneling machine section, 4... Guide roller, 5
... Circular guide ring, 6 ... Erector device main body, 7 ... Hydraulic cylinder, 8 ... Segment gripping mechanism, 9 ... Segment piece gripping tool.

Claims (1)

[Scope of Claim for Utility Model Registration] A segment erector device installed at the rear end of a composite circular shield excavator in which a plurality of circular shield excavator parts are partially overlapped and combined into an integral unit, which comprises: A large number of guide rollers are arranged along the inner peripheral wall of the rear end of the shield tunneling machine part, and a gap of at least the width of a tunnel center column is provided between adjacent guide rings, so that each circular guide ring can be freely rotated around the guide roller. An erector device main body equipped with a segment piece gripping mechanism that can be moved in and out radially outward via a hydraulic cylinder is fixed to each circular guide ring, and when the hydraulic cylinder is in its most contracted state, the erector device main body A segment erector device for a compound circular shield excavator, characterized in that the segment erector device is configured such that the segment erector device is configured to fit within the circular guide ring.