JP3322696B2 - Electa device of shield shaft machine for shaft - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shaft shield excavator which excavates vertically, and more particularly to an erector device for assembling segments on the inner surface of a vertically formed trench.

[0002]

2. Description of the Related Art In recent years, attempts have been made to form a shaft, which is a starting point and an end point of tunnel construction, by using a shield excavator for a shaft. In this case, as shown in FIG. 4, the excavator a digs vertically to the ground, and stretches a shaft segment b in a pit formed behind the excavator. The segment b substantially constitutes an inner wall of the shaft, and receives a reaction force of a shield jack c (propulsion jack) provided in the excavator a.

Conventionally, the shaft segment b is suspended by a ground crane d, carried into a shaft e, and moved down to an assembly position (between a shield jack c and an existing segment b), and remains suspended. In this state, the mine worker assembled and fastened it with bolts and the like.

[0004]

However, in order to move the segment b to the assembling position by hanging it with the crane d, it is necessary to secure a space for the hanging wire f to move in the shaft e. Therefore, the effective working space in the shaft e becomes narrow. That is, it is necessary to minimize the equipment in the shaft so as not to hinder the assembly of the segment b.

[0005] Further, a fine adjustment operation for matching the suspended segment b to a predetermined assembling position;
Was pushed into the assembly position (between the shield jack c and the existing segment b) by human power. Therefore, the work was complicated, and it took a long time to assemble and fasten the segment b. There are also risk factors.

An object of the present invention, which has been made in view of the above circumstances, is to provide a shaft shield capable of efficiently and safely assembling segments on the inner surface of a vertical pit formed by a shaft shield machine. An object of the present invention is to provide an erector device for an excavator.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention relates to a shaft for a shaft which is lowered by pressing a shield jack provided around a vertically arranged shield frame against a lower end of an existing segment above the shield jack. An elector device for a shield machine, comprising: an annular guide rail provided in the shield frame along a circumferential direction thereof ; and a self-propelled device mounted on the guide rail and running along the guide rail.
And truck circulating in the shield frame, and set to該台car
A metal fitting which is engaged with the central portion of the segment supplied in a state of being erected along the inner peripheral surface of the shaft from above,
Inserted into and removed from the recess formed in the lower end of the segment provided on the cart, and fits above the lower end surface of the segment after insertion
Shaped support claw , the support claw provided on the carriage, and
A radial moving means for moving the segment gripped and fixed by the fixing bracket in the radial direction and an axial moving means for moving the segment in the axial direction are provided .

[0008]

After the segments supplied from above into the shaft are gripped and fixed by the fixing brackets and the supporting claws of the bogie, the bogies self-propelled on the guide rails to orbit within the shield frame, and the desired assembling position is obtained. Moved to Then, the bogie is moved radially outward by the radial moving means, moved upward in the axial direction by the axial moving means, and fitted into the assembly position (between the shield jack and the existing segment). In addition, the seg supplied from above
Do not provide a fixture to hold the center of the
Not inserted into or removed from the recess formed at the lower end of the segment
Since support claws are provided, segment by fixing bracket
Hold the center part of
By inserting into the recess formed in the
Support rigidity can be increased . Also supported in this way
The support claw that exerts the function of increasing rigidity is located at the lower end of the segment
Is pressed into the lower end of the segment.
Does not interfere with the shielded jack. Therefore, the above fixed
At the lower end of the segment gripped and fixed with the bracket and support claws,
Press and lift the
To the existing segment above it.
Can be made .

[0009]

An embodiment of the present invention will be described with reference to the accompanying drawings.

FIG. 1 is a side sectional view of an erector device of a shaft excavator for a shaft, FIG. 2 is a top view thereof, and FIG. 3 is a front view of a bogie as a main part thereof. 2A is a sectional view taken along line AA of FIG. 1, FIG. 2B is a sectional view taken along line BB of FIG. 1, and FIG.
3 (D) is a sectional view taken along a line DD in FIG. 1, and FIG.
FIG. 3 is a sectional view taken along line EE of FIG. 2.

As shown in FIG. 4, the shaft excavating machine for a shaft excavates vertically below the ground to form a shaft T. As shown in the figure, a shield jack 2 for propulsion is provided around an inner peripheral surface of a cylindrical shield frame 1 arranged vertically at a predetermined interval. These shield jacks 2 are composed of a cylinder part 2 a fixed to the shield frame 1 and a rod part 2 b which comes and goes from the cylinder part 2 a by hydraulic pressure and whose tip presses the end of the existing segment 3.

In the shield frame 1, a donut disk-shaped support plate 26 is horizontally mounted at the upper end of the cylinder portion 2a of the shield jack 2. On the support plate 26, two annular guide rails 4 (the inner guide rail 4 and the outer guide rail 4) are provided concentrically. A carriage 5 is provided on the guide rail 4 and runs along the guide rail 4 and circulates horizontally in the shield frame 1.

The bogie 5 comprises a traveling body 6 which runs substantially on the guide rail 4 and a slide body 7 which moves on the traveling body 6 in the radial direction of the shield frame 1.
The traveling body 6 has a frame 8 provided by bridging the inner / outer guide rails 4, and the frame 8 is provided with two wheels 9 rolling on each guide rail 4, each of which is rotatably mounted in total of four wheels 9. Have been. Of these wheels 9, wheels 9 rolling on the outer guide rail 4 are provided with a traveling motor 10.
Are connected, and the traveling motor 10
Is to be self-propelled.

Two guide rails 11 are laid on the frame 8 in the radial direction of the shield frame 1 at front and rear ends in the running direction. The slide body 7 is engaged with the guide rail 11 so as to hang them. The slide body 7 includes a screw feed mechanism 12
As a result, it moves in the radial direction with respect to the traveling body 6. The screw feed mechanism 12 is screwed to the screw rod 13 arranged along the radial direction, a slide motor 14 for rotating the screw rod 13, screwed to the screw rod 13, connected to the slide body 7, and its rotation is restricted. It comprises a nut 15.

Both ends of the screw rod 13 are rotatably supported by the frame 8 of the traveling body 6 and a slide motor 14 is provided.
Is mounted on the traveling body 6, the rotation axis of which is connected to the screw rod 13 via a belt / gear or the like, and the nut portion 15 screwed to the screw rod 13 is pin-connected 16 to the slide body 7. According to this configuration, by driving the slide motor 14 and rotating the screw rod 13, the nut portion 15 screwed to the screw rod 13 is screw-fed, and the slide body 7 connected thereto is moved to the guide rail 11. Along the radial direction of the shield frame 1.

On the other hand, the slide body 7 has two guide columns 17 that are vertically erected, and these guide columns 17
The elevating part 18 is inserted through the lower part. The lifting section 18 is moved up and down by a lifting jack 19. One end of the lifting jack 19 is connected to the lifting section 18 and the other end is connected to the slide body 7, and two jacks are arranged, one each at the front and rear ends in the traveling direction of the carriage 5.

The elevating section 18 is provided with a fixture 21 for gripping and fixing the segment 3a supplied into the shaft T from above by the suspension device 20. The fixing bracket 21 is composed of a key stick inserted into a key hole formed at the center of the segment 3a, and these are locked by inserting the key stick into the key hole and rotating it by 90 degrees. I have. Further, the elevating portion 18 is provided with a supporting claw 23 for supporting the concave portion 22 at the lower end of the segment 3a. The support claws 23 are provided in a fan shape and provided in two pieces, and are protruded and retracted toward the recess 22 by the hydraulic cylinder 24.

The operation of this embodiment having the above configuration will be described.

In the segment 3a supplied into the shaft T from above by the suspension device 20, the key rod of the fixture 21 provided on the slide body 7 of the truck 5 is inserted into the keyhole thereof, and the segment 3a engages with the truck 5. Fixed. And segment 3a
The support claw 23 provided on the slide body 7 is inserted into the concave portion 22 at the lower end, thereby supporting the segment 3a. In this way, the center part of the segment is
And a concave formed at the lower end of the segment.
By inserting the support claw into the portion, the segment 3a
Is gripped and fixed with high rigidity. Thus segment 3
After “a” is gripped and fixed to the slide body 7 of the cart 5, the hook 25 of the suspension device 20 is opened upward and the segment 3 a is detached from the suspension device 20 (see the left drawings in FIGS. 1 and 2). ).

Thereafter, the traveling motor 10 provided on the traveling body 6 of the carriage 5 is driven to rotate the carriage 5 horizontally in the shield frame 1 along the guide rails 4, and the grasped segment 3a is moved to a desired assembly position. (Shield Jack 2
And between the existing segment 3). When the carriage 5 is moved to the position before the segment assembling position, the slide motor 14 provided on the carriage 5 is driven to move the slide body 7 holding the segment 3a radially outward with respect to the traveling body 6. The screw feed movement is performed (see the figure on the right side of FIG. 1 and FIG. 2).

Then, the lifting jack 19 of the carriage 5 is extended, and the grasped segment 3a is pressed against the existing segment 3 above. At this time, the shield jack 2 is also used, and the lower end of the grip segment 3a is connected to the shield jack.
By pushing up with 2, the gripping segment 3a is already
The segments are in close contact and the assembly accuracy is improved. With this operation, the segment 3 a is fitted between the shield jack 2 and the existing segment 3. Then, by connecting the segments 3 and 3a with each other with bolts,
Assembly of segment 3 is achieved. At this time, the donut plate-shaped support plate 26 on which the guide rails 4 are laid becomes a work table for an underground worker who performs bolt fastening.

According to the erector apparatus of this embodiment, as shown in FIG. 4, the safety is remarkably compared with the case where an underground worker manually pushes the segment b suspended by the crane d into the assembling position. And the segment assembling time is greatly reduced, and in addition, labor saving can be promoted. Further, as shown in FIG. 4, in order to move the segment b with the crane d and move it in the shaft e, it is necessary to secure a space for the hanging wire f to move in the shaft e. Although the effective working space is reduced, in the present erector device, it is sufficient to secure a space in which the cart 5 orbits inside the shield frame 1.
Effective use of the space in the shaft T can be achieved.

[0023]

As described above, according to the present invention, the following excellent effects can be exhibited.

(1) Safety is improved.

(2) The segment assembling time can be reduced , and the assembling accuracy of the segments can be improved .

(3) Automated bogies, suspension cradle, and traverse device
If this is the case, labor saving in segment supply can be promoted.

(4) The effective working space in the shaft is widened.

[Brief description of the drawings]

FIG. 1 is a side sectional view of an erector device of a shield shaft machine for a shaft as one embodiment of the present invention (a sectional view taken along line EE in FIG. 2).

FIG. 2 is a top view of the above-mentioned elector device, and FIG.
1B is a sectional view taken along line AA, and FIG. 2B is a sectional view taken along line BB in FIG.

FIG. 3 is a front view of a bogie, which is a main part of the erector device, wherein (C) is a cross-sectional view taken along line CC of FIG. 1, and (D) is a sectional view taken along line D-C of FIG.
The sectional view along the line D is shown.

FIG. 4 is an explanatory diagram showing a state of a conventional segment assembly.

[Description of Signs] 1 shield frame 2 shield jack 3 existing segment 3a segment 4 guide rail 5 carriage 6 running body 7 slide body 12 screw feed mechanism 19 as radial moving means 19 lifting jack 21 as axial moving means 21 fixing bracket 23 Supporting claw T shaft

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Shigeru Sakuma 2-4-1, Nishi-Atsujigaoka, Chofu-shi, Tokyo Inside Tokyo Electric Power Company (72) Inventor Toshihiko Bessho 1-25, Nishishinjuku, Shinjuku-ku, Tokyo No. 1 Inside Taisei Corporation (72) Inventor Nobuaki Kobayashi 1-25-1, Nishi-Shinjuku, Shinjuku-ku, Tokyo Inside Taisei Corporation (72) Inventor Ken-ichi Kaneko 1-1-25, Nishi-Shinjuku, Shinjuku-ku, Tokyo No. 1 Taisei Corporation (72) Inventor Hiroyuki Ito 111-1 Kitahama-cho, Chita-shi, Aichi Prefecture Ishikawajima-Hari Ma Heavy Industries Co., Ltd. Aichi Factory (72) Inventor Kazuyuki Tobita 11-1 Kitahama-cho, Chita-shi, Aichi Prefecture No. Ishikawajima-Hari Ma Heavy Industries Co., Ltd. Aichi Works (56) References JP-A-2-18591 (JP, U) JP-A-3-128798 (JP, U) JP 2-48559 (JP, Y2) (58 )査the field (Int.Cl. ^7, DB name) E21D 1/08 E21D 5/04 E21D 11/40

Claims (1)

(57) [Claims] 1. An erection device for a shaft excavator for a shaft, wherein a shield jack provided in a vertically arranged shield frame is pressed against a lower end of an existing segment above the shield jack and descends. An annular guide rail provided along the circumferential direction ; and a self- contained guide rail mounted on the guide rail and along the guide rail.
And truck circulating in the shield frame to run, to該台car
A fixing bracket which engages the provided above the central portion of the segment being subjected <br/> sheet in a standing state along the inner circumferential surface of the vertical shaft, the upper
It is inserted into and removed from the recess formed at the lower end of the segment provided on the trolley and fits above the lower end surface of the segment after insertion.
And supporting pawls shape that, Oyo said support pawls provided in the carriage
Erector device vertical shaft for the shield machine characterized by comprising an axial moving means for moving the gripping radial movement means to the fixed segment is moved in the radial direction and axial direction in the fine fixing bracket.