JPS633120B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a segment erector device in a shield type tunnel machine.

An expansion shield construction method has been proposed in which a tunnel structure c having a larger diameter than the tunnel structure b is constructed within a tunnel structure b constructed from an existing primary segment a.

In this enlarged shield, Figures 1 and 2
As shown in the figure, a rail d is laid in a tunnel structure b, a bogie e is placed on this rail d, a segment erector f is mounted on the bogie e, the bogie e is run, and a secondary segment (circle The circumferential segment) g was being assembled.

However, in the above-mentioned bogie system, it was necessary to lay sleepers and rails d, and when the primary segment a was removed and the secondary segment g was assembled, the rail d had to be extended and removed. etc., were obstacles that made it difficult to transport and remove parts and carry out excavated soil, resulting in poor work efficiency.

The present invention has been made in view of the above circumstances, and its purpose is to eliminate the need for carts and rails, eliminate the need for extending and removing rails during work, and also to eliminate the need for extending and removing rails during work. To provide a segment erector device for a tunnel machine, which reduces the occupied area in the shield cross section of the erector, allows effective use of space, and is easily adaptable to changes in segment diameter, has versatility, and widens the working range.

Hereinafter, the present invention will be explained with reference to FIG. 3 and subsequent figures. 1 in the drawing is a tunnel structure constructed of primary segments 2. Supports 4 and 5 are installed before and after the enlarged shield portion 3 of the tunnel structure 1, and mounting brackets 6 and 7 are attached to the left and right sides of the support supports 4 and 5, respectively. A support beam 9 is installed between the pillars 4 and 5 with its ends connected to the mounting brackets 6 and 7 with pin members 8. The cross section of this support beam 9 is made into a regular square shape. A movable body 10 is provided on the support beam 9 so as to be slidable in the front-rear direction, that is, in the axial direction of the support beam 9.

That is, the movable body 10 has a hole 1 having a regular square shape.
1, and a slide member 12 is fixedly installed at each corner of the hole-shaped portion 11.
are in sliding contact with each corner of the support beam 9. A rack member 13 is attached to the upper surface of the support beam 9 along the axial direction. A traveling motor 14 is fixedly installed on the moving body 10, and a pinion 15 of this traveling motor 14 meshes with a rack 16 of the rack member 13, and these constitute a moving operation mechanism 17 for the sliding body 10. .

The movable body 10 has a plurality of guide rollers 1 located on a circle centered on the center O of the support beam 9.
8 is provided.

A rotating ring body 19 is provided in the outer circumferential direction of the movable body 10, and the guide rollers 18 are in contact with both inner peripheral portions 20 of the rotating ring body 19. An internally toothed ring gear 21 is fixed to the side of the rotating ring body 19.

A support bracket 22 is fixed to the movable body 10, and a swing motor 23 is fixed to the support bracket 22. A pinion 24 of the swing motor 23 is meshed with the ring gear 21. A turning operation mechanism 25 is constructed.

A mounting bracket 26 is fixed to the outer circumferential portion of the swing ring body 19, and a base end portion of an outer boom body 28 of a boom 27 is connected to this mounting bracket 26 by a pin member 29. A lifting boom body 30 is inserted into the outer boom body 28 so as to be movable up and down. A base of a lifting cylinder 31 is connected to the outer boom body 28, and a rod 32 of the lifting cylinder 31 is attached to the lifting boom body 30 with a pin member 33.

A bracket 3 is attached to the outer boom body 28 of the boom 27.
4 is permanently installed.

Further, a holding bracket 35 is fixed to the outer circumferential portion of the rotating ring body 19, and an elevation jack 36 is swingably attached to this holding bracket 35, and a rod 37 of the elevation jack 36 is attached to the bracket 34. They are connected by a pin member 38.

Next, the operation will be explained.

The movable body 10 is moved on the support beam 9 via the pinion 15 and the rack 13 by the rotation of the traveling motor 14.

Further, the rotating ring body 19 is rotated via the pinion 24 and the ring gear 21 by the rotational drive of the rotating motor 23 .

Further, the boom 27 is raised and raised as shown by the arrow in FIG. 6 due to the expansion and contraction movement of the elevation jack 36.

Furthermore, the elevating boom body 28 of the boom 27 moves up and down as the elevating cylinder 31 expands and contracts.

By combining these movements, the existing primary segment 2 is removed and the secondary segment 38 is assembled. That is, the removed portion of the primary segment 2 is excavated by hand, and the enlarged shield 37 is
Attach. The face in front of the expansion shield 37 is excavated and the expansion shield 37 is advanced, and the secondary segment 38 is moved by the elevating boom body 30 of the boom 27.
is assembled into the excavated part to construct an expanded tunnel structure 39, and at the same time, the primary segment 2 located within the expanded shield 37 is removed.

As detailed above, the present invention provides a tunnel structure 1
A support boom 9 is installed between the supports 4 and 5 installed spaced apart from each other, and a movable body 10 is provided on the support boom 9 so as to be movable in the axial direction of the support beam 9. A movement operation mechanism 17 for moving the moving body 10 is provided, a turning ring body 19 for turning around the support beam 9 is provided for the moving body 10, and a turning operation mechanism for operating the turning of the turning ring body 19 for the moving body 10. 25 is provided, and the turning ring body 1
9, a boom 27 for gripping the segment member is swingably attached, and the boom 27 is attached to the rotating ring body 19.
This is a segment erector device for a tunnel machine characterized by being provided with an elevation jack 36 for performing elevation and elevation operations of 7.

Therefore, the segment erector device does not require a trolley or rail, eliminating the need for rail extension and removal during work, and the area occupied by the segment erector device in the shield cross section is reduced, saving space. can be used effectively.

In addition, since the segment erector operates around the support beam 9, it becomes easier to respond to changes in the segment diameter, thereby increasing the versatility of the segment erector device and making it possible to widen the working range.

[Brief explanation of the drawing]

Figure 1 is a side view of the segment erector device in a conventional tunnel machine, and Figure 2 is the same as Figure 1.
3 is a perspective view of one embodiment of the present invention, FIG. 4 is a side view of the same, FIG. 5 is a view taken from the direction of FIG. 4, and FIG. 6 is a view taken along the line of FIG. Figure 7 is a cross-sectional view along the line of Figure 4, Figure 8 is a cross-sectional view along the line
9 is a sectional view taken along the line of FIG. 8, FIG. 10 is a sectional view taken along the line of FIG. 8, and FIG. 11 is a sectional view taken along the line of FIG. 8. - It is a cross-sectional view along the XI line. 4 and 5 are columns, 9 is a support beam, 10 is a moving body, 19 is a rotating ring body, 17 is a moving operation mechanism,
25 is a turning operation mechanism, 27 is a boom, and 36 is an elevation jack.

Claims (1)

[Claims] 1. A support beam 9 is installed between the support beams 4 and 5 installed spaced apart from each other in the tunnel structure 1, and a movable body 10 is provided on the support beam 9 so as to be movable in the axial direction of the support beam 9. 10 is provided with a movement operation mechanism 17 for moving this moving body 10,
The moving body 10 is provided with a rotating ring body 19 that rotates around the support beam 9, the moving body 10 is provided with a rotating operation mechanism 25 that operates the rotating ring body 19, and the rotating ring body 19 is provided with a rotating ring body 19 that rotates around the support beam 9. A segment erector device for a tunnel machine, characterized in that a boom 27 for gripping is swingably mounted, and an elevation jack 36 for raising and lowering the boom 27 is provided on a rotating ring body 19.