JPH0893378A - Transferable lining form for vertical shaft - Google Patents

Abstract

PURPOSE: To secure safety on working and reduce the construction period and carry out an efficient construction work, by arranging a transferable form at the outer periphery of posts erected in a vertical shaft and suspending it by a lifting device and assembling the posts as a truss structure to provide ladders. CONSTITUTION: When a transferable form 16 is moved, the transferable form 16 is securely suspended by a winch and after temporary fixing by a stay wire or a safety pin has been confirmed, the wall is contracted and the form is removed. Next, all workers move from the scaffolds of the transferable form 16 to the post 10 side and the temporary fixing by stay wire and the safety pin is released, Then the winch is remotely operated to lift the transferable form 16 up to a specified height. After that, the transferable form 16 is temporarily fixed again to the posts 10 by the stay wire and the safety pin or the like. Subsequently, the workers move from the post 10 side to the scaffolds of the transferable form 16 and then the wall is widened and concrete is placed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vertical shaft moving center for moving a movable formwork in a vertical shaft to repeatedly perform concrete work for lining or the like.

[0002]

2. Description of the Related Art In a conventional shaft moving center, as shown in FIGS. 9 and 10, the entire moving form 1 is moved by a crane or hoist (not shown) outside the shaft 2 (ground) through a wire 3. I just hung it up and moved it as follows. At the time of pouring concrete, while maintaining the suspended state of the movable form 1, the angle member 4 is fastened to the anchor bolt (not shown) fixed to the existing concrete 5 with the C bolt 6 to fix the movable form 1. Temporarily fix. Remove the C bolt 6 from the concrete 5. The jack 7 is operated to shrink the wall 8 of the movable formwork 1 to release the mold. The mobile formwork 1 is hoisted to the next placing span with a crane or the like. Operate the jack 7 to expand the wall 8 of the movable form 1, tighten the C bolt 6 to the anchor bolt (not shown) that was embedded in the concrete 5 at the time of the last pouring, and move the movable form 1 in the same manner as above. Temporarily fix.

[0003]

However, this has the following problems. (1) During the moving work of the mobile formwork, the mobile formwork is suspended in the air by a crane or the like, so not only is it unstable, but there is also a risk of falling, which is a problem for workers on the mobile formwork. It was a very dangerous task. (2) The dummy bolt, which serves as an anchor for temporarily fixing the movable formwork, cannot be used until the concrete is cured (usually 3 days cycle in the past), and the construction period becomes longer or 1 cycle There was a problem that the length of each casting span was limited. (3) Stairs from the shaft entrance to the mobile formwork had to be repeatedly removed and re-installed each time the mobile formwork was moved, and workability was poor. (4) When installing stairs to the bottom of the shaft, the work was difficult and dangerous.

Therefore, the present invention solves such a problem and can ensure the safety of workers at all times, including during the movement of the movable formwork, and in concrete placing in a short time without waiting for curing of the anchor. The purpose is to provide a vertical shaft moving center that can be efficiently constructed.

[0005]

The shaft moving center according to the first aspect of the present invention, as shown in the examples of FIGS. 1 and 2, stands a post 10 in a shaft 11, and at the outer periphery of the post 10,
The movable form 16 is movably arranged along the post 10,
The movable frame 16 is hung by a lifting device 17 so as to be lifted and lowered via the post 10.

The shaft moving center according to the second embodiment, as shown in the example of FIG.
The movable form 16 is arranged on the outer periphery of the post 10 so as to be movable along the post 10, and the movable form 16 can be lifted and lowered by the lifting device 17 provided on the post 10. It is hung on.

In the shaft moving center of the third aspect, as shown in the example of FIG.
And the moving mold 16 is attached to the outer periphery of the post 10.
Is arranged so as to be movable along the post 10, and the movable frame 16 is suspended by the lifting device 17 so as to be lifted and lowered via the post 10.

In the shaft moving center of the fourth aspect, as shown in FIG. 7, a post 10 is erected in a shaft 11, and a movable form 16 is movable along the post 10 on the outer periphery of the post 10. The rack 32 provided on the side of the post 10 and the pinion 33 provided on the side of the movable mold 16 enable the movable mold 16 to move up and down along the post 10.

In any of the above embodiments, the post 10
Is a truss structure, and a ladder 19 may be provided on the truss structure.

[0010]

According to the vertical shaft moving center of the present invention, the weight of the movable formwork and the load at the time of placing concrete can be applied to the post so that the movable formwork can be maintained in a stable state at all times, and the post can be used by workers. It can be used as an evacuation site.

[0011]

Embodiments of the present invention will now be described with reference to the drawings. 1 to 4 show a first embodiment of the present invention. In this embodiment, a post 10 having a truss structure is vertically erected on a bottom 12 of a shaft so as to be located at a central portion of a shaft 11, a part of the post 10 is projected from a shaft entrance 13 to the ground, and the projecting upper end is formed. 2 sheaves 14 to 2 attached to two places
The movable formwork 16 is suspended by a wire 15 so that it can be raised and lowered. One of the two wires 15 is wound around a hoisting device installed on the ground, for example, a winch 17, and the other wire is further wound around another winch 17 via a sheave 18. The movable form 16 is moved up and down by simultaneously driving two winches 17. A ladder 19 is provided inside the post 10, and the ladder 19 communicates with the ground through a bridge 20 (FIG. 2) provided at the shaft entrance 13. In addition, the post 10 is fixed by an appropriate fixing means so as not to fall in the vertical shaft 11.

As shown in FIG. 4, the movable mold 16 is arranged on the outer periphery of the post 10 so as to penetrate the post 10 and has a structure in which the wall 21 can be opened and closed by a jack (not shown) as in the conventional case. In the movable formwork 16 in the example of the figure,
There are three upper, middle and lower working scaffolds 23 having a wire netting safety fence 22, and at least one of them, for example, the lower working scaffold 23 is a crossing scaffold for crossing the ladder 19 in the post 10. 23a is provided as an extension. The crossing scaffold 23a is provided with a guide roller 24 for guiding the post 10 when the movable frame 16 is raised and lowered.

A stopper 25 is detachably attached to the post 10 side to prevent the movable form 16 from falling, and a foot portion 26 that abuts the stopper 25 is attached to the movable form 16 at a lower stage. Provided on the scaffold 23. Further, although not shown, since the movable mold 16 is temporarily fixed to the post 10, a temporary fixing member such as a retaining wire or a safety pin that can be easily attached and detached is provided between the movable mold 16 and the post 10. Install.

The vertical shaft moving center of the first embodiment is used as follows. When moving the movable form 16, after confirming that the movable form 16 is securely hung by the hoisting device by the winch 17 and is temporarily fixed by a retaining wire, a safety pin, etc., the wall 21 is contracted. To remove the mold. All the workers move from the work scaffolding 23 of the movable formwork 16 to the post 10 side, and release the temporary fixing by the retaining wire, the safety pin or the like. In this case, the ladder 19 can be used. If you confirm the safety on the post 10 side, post 10
The worker who has moved to the side remotely operates the winch 17 to lift the movable formwork 16 to a predetermined height. The movable frame 16 is temporarily fixed to the post 10 again with a retaining wire, a safety pin or the like. The worker moves from the post 10 side to the work scaffold 23 of the movable form 16, expands the wall 21, and performs a concrete placing work.

Next, FIG. 5 shows a second embodiment of the present invention.
This vertical shaft moving center allows the post 10 to be relocated in the vertical shaft direction. First, the post 10 is erected vertically on the vertical shaft bottom 12 and is fixed to the vertical shaft bottom 12 by a foundation member 27. To move the post 10 upwards,
Lift the post 10 with a crane on the ground (foundation member 2
(7 also moves integrally with the post 10), and the bracket 28 is fixed to the inner surface of the shaft 11 at a predetermined height by an anchor 29. The bracket 28 supports the base member 27 from below to stand the post 10 vertically. In the case of this second embodiment,
A winch 17 for lifting the movable form 16 is installed on the upper end of the post 10. In this way, the length of the post 10 may be shorter than the depth of the shaft 11, which is convenient when the shaft 11 is deep.

FIG. 6 shows a third embodiment of the present invention. In this vertical shaft moving center, a post 10 is vertically suspended from the ground into a vertical shaft 11 by a suspension member 30 installed at a vertical shaft inlet 13, and a lower end portion of the post 10 is fixed so as not to swing.
It is fixed to the shaft 11 by means of 1 and is otherwise the same as in the first embodiment.

7 and 8 show a fourth embodiment of the present invention. This vertical shaft moving center is rack 3 on the post 10 side.
2 is provided, a pinion 33 that meshes with the rack 32 and a motor 34 with a brake that rotates the pinion 33 are provided on the movable form 16 side.
It is designed to automatically climb along 0. In the fourth embodiment as well, the movable form 16 can be suspended by the suspension structure as described above in order to enhance safety.

[0018]

As described above, according to the present invention, the weight of the movable form and the load at the time of placing concrete can be applied to the post, so that the movable form can be maintained in a stable state at all times. In addition, since the post can be used as an evacuation site for workers regardless of the position of the mobile formwork, safety can always be ensured. Furthermore, concrete can be placed efficiently in a short time without waiting for the anchor to be cured, and in addition to ensuring safety, workability can be improved and the construction period can be shortened.

[Brief description of drawings]

FIG. 1 is an overall front view of a shaft moving center according to a first embodiment of the present invention.

FIG. 2 is a side view of the upper end portion of the above.

FIG. 3 is a plan view of the above.

FIG. 4 is an enlarged side view of the main part of the above.

FIG. 5 is an overall front view of a shaft moving center according to a second embodiment of the present invention.

FIG. 6 is an overall front view of a vertical shaft moving center according to a third embodiment.

FIG. 7 is an overall front view of a vertical shaft moving center according to a fourth embodiment.

FIG. 8 is an enlarged plan view of the main part of the above.

FIG. 9 is a front view of a main part of a conventional example.

FIG. 10 is a plan view of the above.

[Explanation of symbols]

 10 Posts 11 Vertical shafts 16 Mobile formwork 17 Winch (lifting device) 19 Ladder 27 Base member 30 Lifting member 32 Rack 33 Pinion

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Yutaka Ishiga 2-5-8 Kita-Aoyama, Minato-ku, Tokyo Intra-company group (72) Shunsuke Machi, 2-5-8 Kita-Aoyama, Minato-ku, Tokyo Aoyama Incorporated (72) Inventor Shinji Masada, No. 144, 14 Shijo-machi, Motosu-gun, Gifu Gifu Industry Co., Ltd. (72) In-house, Mitsuru Morimoto, 144, Shijo-cho, Motosu-gun, Gifu Gifu Industry Co. (72) Inventor Hiroyuki Misawa 1-10-3 Honcho, Aoba-ku, Sendai City, Miyagi Prefecture Sato Industry Co., Ltd. Tohoku Branch

Claims (5)

[Claims] 1. A post is erected in a vertical shaft, a movable form is arranged around the outer periphery of the post so as to be movable along the post, and the movable form is suspended by a lifting device so as to be lifted and lowered via the post. The vertical shaft moving center that is characterized. 2. A post is erected in a vertical shaft by a foundation member so that it can be moved in the axial direction of the vertical shaft, and a movable form is movably arranged along the post on the outer periphery of the post, and the movable form is provided on the post. A vertical shaft moving center that is lifted up and down by a lifting device. 3. A post is suspended in a vertical shaft by a suspension member,
A vertical shaft moving center, characterized in that a movable form is arranged on the outer periphery of the post so as to be movable along the post, and the movable form is suspended by a lifting device so as to be able to move up and down via the post. 4. A post is erected in a vertical shaft, a movable form is movably arranged along the post on the outer periphery of the post, and a rack provided on the post side and a pinion provided on the movable form side, A vertical shaft moving center that can move a movable form along a post. 5. The vertical shaft moving center according to claim 1, wherein the post has a truss structure and a ladder is provided on the post.