JPS6126479Y2 - - Google Patents

Description

[Detailed description of the invention] Most shield-type tunneling machines have circular shields, and the assembly of the circular shield requires three components: a turning movement mechanism, a radial movement mechanism, and a shield forward/backward movement mechanism. The segments around the shield could be assembled by an erector with a segment gripping device equipped with a mechanism. At this time, the rotation center of the erector is always fixed.

However, in the case of a rectangular shield or a horseshoe-shaped shield, it is impossible to assemble the segments using the erector using only the above-mentioned turning movement mechanism, radial movement mechanism, and shield forward/backward movement mechanism.

In order to make it possible to assemble a rectangular shield, in addition to the rotational movement and radial movement mechanism of the segment gripping device and the movement mechanism in the forward and backward direction of the shield, a rotating device of the gripping device is configured to move horizontally and vertically. A new erector has been proposed.

However, in such devices, because the rotating device moves and the amount of movement of the rotating device needs to be large, there is no space in the center of the rotating device for wiring, piping, etc. Therefore, when assembling segments, shielding is required. Wiring and piping connecting the inside of the aircraft and the rear had to be removed.

This proposal was proposed in view of these circumstances, and includes a segment gripping device that is movable in the rectangular or horseshoe-shaped shield main body in the rotation direction, radial direction, tangential direction, and direction of movement of the shield with respect to the rotation ring. at least two sets of segment suspension devices and at least two sets of telescoping segment supports extending over the mounting surface of the suspension device and the plane orthogonal to the mounting surface; The purpose of the segment assembly erector device is to provide an improved segment assembly erector device that eliminates the drawbacks of the conventional erector device and can assemble multiple types of segments with a single device. The point is to provide equipment.

Since the device of the present invention is configured as described above, the segment gripping device is moved via the mechanism for rotating, radially moving, tangentially moving, and moving the shield in forward and backward directions, and the segments attached to the device are moved. After the lifting device is placed in a position where it can lift the segment placed at a specified position and the segment is gripped by the gripping device, the segment support attached to the device is expanded and contracted to prevent the segment from swinging. Thereafter, the segments are assembled in a predetermined position by rotating the gripping device, moving it in a radial direction, moving it in a tangential direction, and moving the shield in a forward and backward direction.

Therefore, in the present invention, the segment gripping device is not only configured to be able to rotate and move in the radial direction with respect to the swivel ring and move in the forward and backward directions of the shield, but also in the tangential direction of the swivel ring. Since it is movable, there is no need for horizontal and vertical movement of the rotation device of the erector device, and a space is provided for wiring and piping at the center of rotation of the erector device, and wiring that connects the inside of the shield machine and the rear when assembling segments. , there is no need to remove the piping, and construction can be carried out smoothly.

In addition, in a circular shield, the segment is composed of a single type of arc-shaped segment, but in a rectangular or horseshoe-shaped shield, the segment is composed of multiple types of segments. In the present invention, the segment gripping device includes at least two sets of segment hanging devices and at least two sets of telescopic segment supports. Since it is attached, it is possible to lift various segments with a single erector device, and there is no need to attach and detach the gripping device each time, simplifying the construction.

The present invention will be described below with reference to the illustrated embodiments.

Reference numeral 1 denotes a turning ring rotatably supported in the shield body 2 by a guide roller 3, and is driven and rotated by a pinion 5 driven by a drive motor 4 meshing with an outer toothed ring portion. It's summery.

A pair of inner cylinders 6 parallel to each other are attached to the swivel ring 1, and an outer cylinder 7 is slidably fitted into the inner cylinder 6, and a hydraulic pressure interposed between the cylinders 6 and 7 is provided. A jack 8 allows the outer cylinder 7 to slide along the inner cylinder 6 and to move within the shield body 2 in the radial direction relative to the pivot ring 1. Note that the inner cylinder 6 is formed to have a rectangular cross section in order to prevent the outer cylinder 7 from twisting.

A second outer cylinder 10 is connected to the tip of each outer cylinder 7 via a connecting piece 9, and an inner cylinder 1 is attached to the outer cylinder 10.
1 is slidably fitted. An arm device 12 is fixed to the tip of the inner cylinder 11.
The inner cylinder 11 slides along the outer cylinder 10 by a hydraulic jack 13 interposed between the outer cylinder 10 and the outer cylinder 10 .
It is designed to expand and contract in the radial direction.

The arm device 12 has a box-shaped cross section with one side open at the center, and has plain bearings 14, 15, 16, 17,
18, 19, 20 as guides, the arm device 12
A lateral slide device 21 having a similar cross-sectional shape to the same device 2
1 and the arm device 12, the swing ring 1 is moved in a tangential direction with respect to the swing ring 1 by a hydraulic jack 22 interposed between the swing ring 1 and the arm device 12.

Reference numeral 23 denotes a gripping device, which is slid by a hydraulic jack 25 interposed between the gripping device 23 and the lateral slide device 21 along a pair of mutually parallel guide rods 24 fixed to the lateral slide device 21. The gripping device 24 is thus adapted to move in the direction of advancement and retraction of the shield. In the figure, 26 is a plate for preventing the guide rod 24 from slipping out.

The gripping device 23 has segment suspension devices 27 and 28 protruding from the vicinity of the ends and the center thereof, and segment supports 29 and 30 on both sides of the gripping device 23, which are perpendicular to each other, sandwiching the segment suspension device 27.
A pair of segments 31 and 32 are arranged on both sides of the segment hanging device 28. Each segment support 29, 30, 3
1 and 32 are each of the screw-jack type.

In addition, 33 in the figure is a shield propulsion jack.

Next, the operation of assembling segments in a rectangular shield using the above-mentioned apparatus will be explained.

In this case, the segments used are roughly divided into three types: L-shaped segment A, segment B which is flat and long, and segment C which is flat and short.

The L-shaped segment A is attached to the segment suspension device 27 by a segment suspension fitting 35 connected via a pin 34, and the segment supports 29 and 30 prevent the segment from swinging. Further, the flat plate type segments B and C are attached to the segment suspension device 28 in the same manner as described above, and the segment supports 31 and 32 prevent the segments from swinging.

Since the illustrated embodiment is constructed as described above, after placing the segments in the prescribed positions, the hydraulic motor 4 is driven to rotate the swivel ring 1, and the hydraulic jacks 8 and 13 are operated to rotate the arm device. 12 in the radial direction of the turning ring 1, actuating the hydraulic jack 20 to move the lateral slide device 21 in the tangential direction of the turning ring 1, and actuating the hydraulic jack 25 to move the gripping device 23 in the direction of movement of the shield. The gripping device 23 is moved to a position where the segment can be lifted. After the segment is gripped by the same device 23, the segment support prevents the segment from swinging, and then the gripping device 23 again
The segments are assembled at prescribed positions by moving in the rotating direction, radially, and tangentially with respect to the rotating ring 1 of No. 3, and moving the shield in the forward and backward directions.

Note that when assembling the segments, the swivel ring 1 is moved in the direction of the arrow x in FIG.
The segments can be assembled by simply moving in the direction of the arrow y in FIG. The parallelism of the outer and inner surfaces of the segments is determined by expansion and contraction of the segment supports.

As described above, according to this embodiment, an effective space is provided at the center of rotation of the erector device, as shown by R in FIG. 2, and wiring and piping can be installed. Furthermore, by arranging a plurality of sets of segment hanging devices and segment supports on the gripping device, a plurality of types of segments can be assembled by a single erector device.

[Brief explanation of the drawing]

FIG. 1 is a vertical cross-sectional side view showing an embodiment of the segment assembly erector device according to the present invention, and FIG.
3, 4, and 5 are a view in the direction of the arrows, a view in the direction of the arrows, and a view in the direction of the arrows in FIG. 2. 1...Swivel ring, 4...Hydraulic motor, 5...
Pinion, 6...Inner cylinder, 7...Outer cylinder, 8...Hydraulic jack, 10...Outer cylinder, 11...Inner cylinder, 12...
...Arm device, 21... Lateral slide device, 22...
...Hydraulic jack, 23... Gripping device, 24... Guide rod, 25... Hydraulic jack, 27, 28...
Segment hanging device, 29, 30, 31, 32...
…Segment support.

Claims (1)

[Scope of utility model registration request] A segment gripping device is disposed within the rectangular and horseshoe-shaped shield body so as to be movable in the rotational direction, radial direction, tangential direction, and direction of advancing and retracting the shield with respect to the swivel ring, and at least two sets of segment hanging devices are attached to the gripping device. and at least two sets of telescopic segment supports are attached to the mounting surface of the hanging device and a surface orthogonal to the mounting surface.