JPS63284400A - Erector device for assembly of shield segment - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to an erector device for assembling shield segments used for positioning the joint surface of an assembled segment to the joint surface of an existing segment.

<Prior Art> The assembly of shield segments is inefficient because positioning and jointing of adjacent segments is limited to a narrow space. For this,
There is a trend toward fully automatic assembly equipment for shield segments in order to save labor and improve efficiency. Figures 6 and 7 show a conventional shield segment assembly erector.
In the figure, 1 is a shield machine for excavating the earth, and the shield machine 2 moves forward while being supported by the existing segments 3, and constructs the assembly segments 4 one after another at the rear, and then constructs the tunnel lining. It is something to do. On the other hand, 5 is a plurality of support rollers rotatably provided at the rear of the shield machine 1; 6 is a motor that rotates a turning ring 7;
8 is an extending/retracting device for an erector arm 9 provided on the swivel ring 7, and 9 is an erector arm protruding from the extending/retracting device 8 in the radial direction. These constitute the assembly erector device.

In such a conventional assembly erector device, after the shield machine 1 is advanced while the shield jack 2 is supported by the existing segment 3, when constructing the assembly segment 4 at the rear thereof, the motor 6 is driven to support the shield machine 1. A pivot ring 7 is rotated on the roller 5, thereby rotating the erector arm 9, thereby automatically positioning the joint surface of the assembled segment 4 with respect to the joint surface of the existing segment 3.

In this case, if the turning surface of the erector arm 9 and the joint surface of the existing segment 3 are not parallel as shown, the assembled segment 4 may be yawed in the direction of arrow P as shown in FIG. , rolling in the direction of arrow Q, pitching in the direction of arrow R,
Attitude control is performed so that the joint with the existing segment 3 is appropriate.

<Problems to be Solved by the Invention> However, in such a conventional shield segment assembly erector device, the turning surface 7a of the erector
Therefore, it is necessary to position the assembled segment 4 with respect to the joint surface of the existing segment 3 by yawing, rolling, or pitching as described above, and this positioning work and lining work are extremely troublesome. , there was a problem of inefficiency.

This invention has been made by focusing on such conventional problems, and by making it possible to adjust the swivel ring to any angle with respect to the axial direction of the shield machine, the assembled segment can be adjusted to the joint surface of the existing segment. It is an object of the present invention to provide an erector device for assembling shield segments that can arbitrarily set the relative position of the joint surfaces of the shield segments.

<Means for solving the problems> Erector for assembling shield segments according to the present invention
The apparatus is configured such that a plurality of support rollers that rotatably support a turning ring are slidable in the axial direction of the shield machine using at least two telescoping members.

Effect> The telescoping member in the present invention acts to displace the plurality of support rollers in the axial direction of the shield machine with respect to the shield machine main body by its telescoping action, and thereby the rotation surface of the revolving ring The erector turning surface is made to have an arbitrary inclination angle, thereby making it possible to automate the positioning of the assembled segment with respect to the existing segment by the erector arm in an optimal posture state.

<Embodiment of the Invention> An embodiment of the invention will be described below with reference to the drawings. Components that are the same as those shown in FIG. 6 are designated by the same reference numerals, and redundant explanation thereof will be omitted. In FIG. 1, reference numeral 11 denotes a sliding guide that slidably supports each of a plurality of support rollers 5, which are provided on the shield machine 1 side, and these support rollers 5 are supported by at least two elastic members 12. It is adapted to be slidably biased in the axial direction of the shield machine 1.

FIGS. 2 and 3 show details of the vicinity of such a sliding part,
The support roller 5 is rotatably supported around a support shaft 14 on a bracket 13. Further, the telescopic member 12 is made of a hydraulic cylinder or the like, and one end of the cylinder portion 12 a is pivotally supported on the shield machine 1 side, and one end of the piston portion 12 b is pivotally supported on a part of the bracket 13 .

On the other hand, the sliding guide 11 has a rail structure having a notched groove 15 extending in the axial direction of the shield machine 1, and a protrusion 13a of the bracket 13 is slidably supported in the notched groove 15.

Next, the operation of this embodiment will be explained. First, the shield machine 1 is advanced while the shield jack 2 is supported by the existing segment 3, and after this advancement, the shield jack 2 is contracted and the assembled segment 4 is constructed so as to be adjacent to the existing segment 3. At this time, if the assembled segment 4 is a standard segment, the expandable member 1 is moved so that the rotation surface of the rotation ring 7, that is, the erector rotation surface 7a, is parallel to the joint surface 3a of the existing segment 3.
2, the bracket 13 is moved onto the sliding guide 11, and the pivot ring 7 is tilted to the position shown in FIG. In this state, the motor 6 is driven to rotate the swing ring 7. Then, the erector arm 9 rotating together with the pivot ring 7 movably holds the joint surface of the assembled segment 4 parallel to the joint surface 3a of the existing segment 3.

In addition, as shown in FIGS. 4 and 5, the assembly segment 4 may be a single taper segment 4A or a double taper segment 4B.
In this case, the inclination of the swivel ring 7 is adjusted by the telescopic member 12 so that the joint surface 4a of the assembled segment 4 is parallel to the joint surface 3a of the existing segment 3 instead of the erector-swivel surface 7a.

The inclination angle of the turning ring 7 is determined by detecting the angle of the joint surface 3a of the existing segment 3 from the stroke of the shield jack 2 and the like. When the assembly segment 4 is a single taper segment 4A or a double taper segment 4B, the inclination angle of the turning ring 7 is determined in consideration of these taper angles and the assembly direction.

By making it possible to arbitrarily set the inclination of the swivel ring 7 in this way, the position of the joint surface of the assembly segment with respect to the joint surface of the existing segment can be automatically and efficiently adjusted, and the shield segment assembly work can be speeded up. In addition to this, curved and meandering parts can also be corrected at will.

In the above embodiment, a case has been described in which a hydraulic cylinder is used as the telescoping member 12, but a pneumatic cylinder can also be used, and the same effects as in the above embodiment can be obtained.

<Effects of the Invention> As described above, according to the present invention, the support roller that rotatably supports the swivel ring is made slidable in the axial direction of the shield machine by using at least two telescopic members. As a result, the inclination of the erector turning surface can be set arbitrarily, and the inclination position of the joint surface of the assembled segment relative to the joint surface of the existing segment can be automatically and easily and reliably adjusted. There is.

[Brief explanation of the drawing]

FIG. 1 is a schematic sectional view of an erector device for assembling shield segments according to the present invention, FIG. 2 is an enlarged sectional view of the main part of FIG. 1, and FIG. 4 and 5 are cross-sectional views illustrating the assembled state of one tapered segment and both tapered segments;
The figure is a schematic sectional view showing a conventional assembly erector device, FIG. 7 is a sectional view taken along line AA in FIG. 6, and FIG. 8 is an explanatory diagram showing a conventional attitude control mode of an assembly segment. 1. Shield machine, 3. Existing segment, 4.
Assembly segment, 5...Support roller, 6...Motor, 7
... Swivel ring, 11. Sliding guide, 12. Telescopic member. Figure 4 Figure 5 4th Figure 7

Claims (1)

[Scope of Claims] 1) An erector arm that positions a joint surface of an assembled segment on a joint surface of an existing segment, a swivel ring that rotates this erector arm, and a plurality of support rollers that rotatably support this swivel ring. , an erector device for assembling shield segments comprising a motor that transmits rotation to the rotating ring, characterized in that at least two telescopic members are provided for sliding the plurality of support rollers in the axial direction of the shield machine. Erector device for assembling shield segments. 2) The erector device for assembling a shield segment according to claim 1, wherein the telescopic member is a hydraulic cylinder.