JPH0427360B2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a shield segment erector,
In particular, it relates to a shielded segment erector that allows segments to be supplied smoothly and quickly in a narrow space.

[Technical background of the invention and its problems] Generally, a shield excavator is provided with an erector for assembling segments. This erector has a hanging beam that is provided to be able to reciprocate in the radial direction of the tunnel with respect to a turning ring that is rotatably supported by the shield body, and the segment gripped by the hanging beam is attached to the inner wall of the excavated tunnel. , and can be transported to the desired location and assembled.

However, in the case of conventional erectors, after manually attaching the hanging piece, the gripping part of the hanging beam is positioned with respect to the segment supplied by an electric hoist to the lower surface of the tunnel directly below the erector, and the segment is gripped. However, this method required a large space for supplying the segments and had the disadvantage that it took a lot of effort to grasp the segments. Incidentally, an erector is known that is provided with a guide roller that guides the segment to the gripping part (Japanese Patent Publication No. 14859/1983).
This erector has difficulty in positioning the segment in the gripping portion, and is unstable because it grips the segment by floating it from the guide roller.

[Object of the Invention] The present invention has been devised to eliminate the drawbacks of the prior art as described above, and its purpose is to smoothly and quickly supply segments to the segment gripping portion on the hanging beam in a narrow space, thereby ensuring reliability. The object of the present invention is to provide a shielded segment erector that can be gripped by a shielded segment erector, thereby speeding up the segment assembly work.

[Summary of the Invention] In order to achieve the above object, the present invention provides a shield segment erector in which a swing ring provided on a shield body is provided with a hanging beam that grips a segment and moves in the radial direction of a tunnel. , a plurality of guide rollers that support and guide the inner surface of the segment supplied from behind on a hanging beam positioned above the tunnel, a stopper that positions the segment, and a hook hole provided at the center of the inner surface of the segment. and a gripping portion that engages and presses the segment against the guide roller.

[Embodiments of the Invention] A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

In FIGS. 1 and 2, 1 is a cylindrical tail plate of a shield tunneling machine, and inside this tail plate 1, an annular turning ring 2 is turned along the circumferential direction via a support roller 3. It is set freely. A rotational drive device (not shown) is connected to the turning ring 2, and a hanging beam 6 having a gripping portion 5 for gripping the segment 4 is provided so as to be able to reciprocate in the radial direction. The hanging beam 6 is formed in a substantially arc shape, and has a hook-type grip portion 5 at the center of the outside.
A pair of guide rods 7 are formed at both ends to form a U-shape. These guide rods 7 are slidably supported by a pedestal 8 formed on the swing ring 2, and support the suspension beam 6 so as to be movable back and forth in the radial direction. Further, as a means for moving the hanging beam 6 in the radial direction, the above-mentioned mount 8 and the hanging beam 6 are used.
A telescopic cylinder 9 is interposed between both ends of the cylinder. The gripping portion 5 has a T-shaped locking portion 10 at its tip.
The locking portion 10 is inserted into the hook hole 12 formed at the center of the inner surface of the segment 4 as shown in FIG. It is adapted to engage and grip the segment 4. As a means for inserting and removing the hook rod 11 into and out of the hook hole 12 of the segment 4, a gripping cylinder 13 for insertion and removal is provided at the base end of the hook rod 11, and a grip cylinder 13 is provided on the hook rod 11 via a spline. A gripping and rotating cylinder 15 is connected to a lever 14 that is slidably provided in the axial direction.

Then, the segment 4 is supplied from the rear in the sinus direction with the inner surface facing down to the gripping part 5 of the hanging beam 6 located above, and the supplied segment 4 is A guide roller 16 is provided on the outer side of the suspension beam 6 via a bracket 17 for guiding it onto the gripper 5 . A plurality of guide rollers 16 are arranged in the circumferential direction and in the tunnel direction so as to receive the inner surface of the segment 4 and guide it in a stable state. Further, at the rear end of the hanging beam 6, a hook hole 12 is provided for the segment 4 guided by the guide roller 16 to the hook rod 1.
A stopper 18 is provided for stopping the camera so as to be located on the top.

The segment supply device 19 includes a pusher 20 that is disposed at the rear upper part of the tail plate 1 and supplies the segment 4 onto the hanging beam 6 that is positioned above the tunnel and waits for the segment 4;
It is mainly composed of a conveyor 21 which is provided at the rear of the vehicle 0 and supplies the segments 4 to the pusher 20, and a pantograph type lifter 23 which ascends and conveys the segments 4 carried by a truck 22 to the conveyor 21.

Next, the operation of the present invention constructed as described above will be described.

When receiving the segment 4, the hanging beam 6 is first positioned upward by the rotation of the turning wheel 2, and is on standby with the hook bar 11 of the gripping part 5 being retracted. Pusher 20 of segment supply device 19
pushes out segment 4, that segment 4
is supported by guide rollers 16 and guided onto the suspension beam 6, and is positioned against a stopper 18. Next, the hook rod 11 is attached to the gripping cylinder 13 for insertion and removal.
The locking portion 10 is inserted into the hook hole 12 of the segment 4. Once the locking portion 10 of the hook bar 11 is inserted into the hook hole 12 of the segment 4, the hook rod 11 is rotated by 90° via the grip rotation cylinder 15 and the lever 14 to engage the lock portion 10 with the hook hole 12. be done. Further, the insertion/removal holding cylinder 13 is moved back to strongly press the segment 4 against the guide roller 16. As a result, gripping of the segment 4 is completed, and the segment 4 is positioned at a desired location on the inner wall of the excavated tunnel by the rotation of the turning ring 2 and the movement of the hanging beam 6 in the radial direction, and is assembled into a ring shape. It turns out.

[Effects of the Invention] In summary, the present invention exhibits the following excellent effects.

(1) Guide rollers are installed on the outside of the suspension beam to guide the segments supplied from the rear of the upper part of the tunnel to the gripping part of the suspension beam positioned above the tunnel. The segment assembly can be smoothly and quickly fed to the gripping portion and gripped, thereby speeding up the segment assembly work.

(2) In particular, the stopper allows the segment to be quickly and easily positioned on the suspension beam, and the gripping portion engages with a hook hole provided in the center of the inner surface of the segment to force the segment onto the plurality of guide rollers. Therefore, gripping of the segment becomes stable and reliable.

[Brief explanation of drawings]

The drawings show an embodiment of the shield segment erector according to the present invention, in which FIG. 1 is a rear front view, FIG. 2 is a longitudinal sectional view thereof, and FIG. 3 is a view showing the inner surface of the segment. In the figure, 1 is the tail plate of the shield tunneling machine,
4 is a segment, 5 is a gripping part, 6 is a hanging beam,
16 is a guide roller.

Claims (1)

[Claims] 1. In a shield segment erector equipped with a hanging beam that grips the segment on a turning ring provided on the shield body and moves in the radial direction of the tunnel, the hanging beam is placed on the hanging beam positioned above the tunnel from behind. A plurality of guide rollers that support and guide the inner surface of the supplied segment, a stopper that positions the segment, and a grip that engages with a hook hole provided at the center of the inner surface of the segment and presses the segment against the guide roller. A shield segment erector characterized by the provision of a shield segment erector.