JPH1144093A - Tool for lifting external wall panel - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the safety by providing a guide means which is attached to a horizontal beam to vertically move the horizontal beam along a vertical pipe of a scaffold. SOLUTION: The position of arms 25 with respect to a horizontal beam 21 of a tool 20 is adjusted corresponding to the intervals of steel pipes of a scaffold formed outside a building frame and the distance between the building frame and the scaffold to fix the arms 25 to the beam 21 by means of bolts 26 and nuts. Next, a jig 23 of the tool 20 is fixed to an anchor nut opened at the upper end of a panel 1 and upper side wires 22 are connected to a hook of a crane using a chain block 1. The hook of the crane is brought close to the scaffold to engage pulleys 27 of the arms 25 with the steel pipes of the scaffold and the panel 1 is lowered along the steel pipes, while the pulleys 27 are caused to roll with respect to the steel pipes. Since the beam 21 is supported by the scaffold through the pulleys 27, even if the panel 1 is lowered, it does not vibrate and safety can be improved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for suspending an exterior wall panel such as a lightweight cellular concrete (ALC) panel or a PC panel from above a skeleton of a building and attaching the panel to the skeleton. It relates to tools for use.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 6, when an outer wall panel 1 such as a wide ALC panel having a width of more than 600 mm is attached to a reinforcing steel frame 2 of a building to form an outer wall, the frame is formed as follows. 2, a mounting bracket (not shown) is fixed, and a scaffold 4 in which an iron pipe is assembled is temporarily provided outside the frame 2. On the other hand, a mounting bracket (not shown) is fixed at a desired position on the back surface of the panel 1, and a panel hanging tool 10 (hereinafter, sometimes simply referred to as a tool) is mounted on a small edge surface at an upper end of the panel 1. The tool 10 is lifted by the crane 3, suspended from above between the skeleton 2 and the scaffold 4, temporarily fixed to the skeleton 2 with a fitting, and then the jig 13 of the tool 10 is fixed.
(See FIG. 5) is detached from the panel 1.

[0003] Various types of hanging tools are used depending on the dimensions of the panel and the mounting structure on the frame. For example, in a tool 10 as shown in FIG. 5, a pair of wires 12 suspended from a crane hook are attached to the center of the upper end of a horizontal beam 11 having an I-shaped cross section.
At the lower end of the horizontal beam 11, a pair of wires 14 that are engaged with the fore-edge surface of the upper end of the panel 1 are attached. When the panel 1 is suspended using the tool 10, the jig 13 of the tool 10 is screwed into the anchor nut 1 a buried in the panel and opened on the upper end small surface. The wire 12 is suspended from the hook of the crane 3.

[0004]

As described above, the suspended panel 1 is sequentially attached to the skeleton from the lower floor, and the gap between the skeleton 2 and the scaffold 4 is usually 300 to 500.
When the panel 1 is hung, the panel 1 swings back and forth like a pendulum and collides with the scaffold 4 and the skeleton 2, damaging the surface of the panel 1 and requiring time and effort to repair it. And there was a safety problem for workers on the scaffold 4.

In order to prevent this swing, a plurality of workers are arranged not only on the scaffold 4 but also on each floor on the side of the frame 2, and the panel 1 is lowered at a low speed to allow the panel 1 to move up and down. There is also a problem that a lot of work time and man-hours are required because workers need to work in cooperation. And, of course, these problems increase as the level of the building increases and as the wind increases.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to suspend an outer wall panel by suspending an outer wall panel from above a skeleton of a building and preventing the panel from swinging when the panel is attached to the skeleton. It is intended to provide a mounting tool.

[0007]

In order to achieve the above-mentioned object, a panel hanging tool according to the present invention comprises a horizontal beam suspended from a hook of a crane at an upper portion and hanging a panel at a lower portion, and the horizontal beam. And a guide means attached to the horizontal beam so as to move the horizontal beam up and down along the vertical pipe of the scaffold.

This tool has a jig at the lower end which is suspended by a pair of wires on the hook of the crane at the upper part and which engages with a locking means such as an anchor bolt provided at the lower end face of the panel at the lower part. Preferably, the panel is configured to be suspended by a pair of wires.

The guide means preferably comprises a pair of arms attached to both ends of the horizontal beam, and a rotatable pulley attached to a tip of the arm. Also,
Preferably, the pair of arms are configured such that the distance between them is adjustable and the length of protrusion relative to the horizontal beam is adjustable.

The pulley is preferably magnetized so as to be movable by being attracted to an iron pipe of the scaffold.

[0011]

Next, embodiments of the present invention will be described. FIG. 1 is a perspective view showing a state in which a panel is hung by a panel hanging tool of the present invention, and FIG. 2 is a side view for explaining a state in which a panel is hung by using a panel hanging tool. FIG. 3 is an enlarged side view of the portion (A) of FIG. 2, and FIG. 4 is a plan view showing only the pulley shown in FIG.

The panel hanging tool 20 of the present invention has a horizontal beam 21 having an I-shaped cross section, similarly to the conventional tool 10.
And the horizontal beam 21 comprises a central web, an upper flange and a lower flange. At the center of the upper end of the web of the horizontal beam 21, a pair of wires 22 suspended from a hook of a crane is attached.
At the lower end of the web 1, a pair of wires 24 are attached to suspend the jig 23 locked on an anchor nut (not shown) of the panel 1 on the upper edge of the panel 1.

As shown in FIG. 3, a plurality of holes 21c are formed at both ends of the upper flange of the horizontal beam 21 at appropriate intervals. A pair of L-shaped arms 25 are fixed to the horizontal beam at their horizontal parts by bolts 26 and nuts 26a (FIG. 3) in a direction perpendicular to the longitudinal direction of the horizontal beam. A pulley 27 is attached to the tip of the arm 25. The pulley 27 is, as shown in FIG. 4, a support frame 27c having a U-shaped cross section fixed to the tip of the arm 25.
And a horizontal shaft 27b attached to the support frame 27c
And a roller 2 rotatably mounted on a horizontal shaft 27b.
7a.

The roller 27a is formed with a concave portion in the circumferential direction, and the cross-sectional shape of the concave portion matches the circular shape of the cross-section of the vertically arranged iron pipe 4a of the scaffold 4.
The cross section is formed in a semicircular shape. Therefore, the roller 27a can move up and down along the iron pipe 4a, and guides the horizontal beam 21 along the iron pipe 4a of the scaffold 4. The roller 27a is preferably magnetized so as not to be attracted to the iron pipe 4a and come off. This magnetization direction may be a plane direction or an axial direction.

The horizontal portion of the arm 25 is formed with a plurality of holes 25a for fixing to the upper flange of the horizontal beam 21 using at least one of them.
By fixing one of the holes 25a of the arm 25 and one of the holes 21c of the upper flange of the horizontal beam 21 in combination, the distance between the pair of pulleys 27 and the protruding length from the horizontal beam 21 can be adjusted. Has become. Therefore, the distance between the scaffold 4 and the horizontal beam 21 and thus the distance between the panel 1 and the scaffold 4 can be appropriately selected.

A pair of holes 21a for attaching the wire 22 to the shackle 22a are formed at the upper end of the web of the horizontal beam 21 at the same distance from the center. A plurality of holes 21b are formed at the lower end of the web of the horizontal beam 21 at equal intervals from the center. Therefore, the interval between the wires 24 can be appropriately selected according to the width of the suspended panel.

Next, how to use the tool 20 of the present invention will be described. First, a mounting bracket (not shown) is attached to the skeleton 2, and a scaffold 4 constructed by assembling an iron pipe 4a outside the skeleton 2 is temporarily provided to a position slightly higher than the upper end of the skeleton 2. On the other hand, the distance between the iron pipes 4a of the scaffold 4 and
The position of the arm 25 is adjusted with respect to the horizontal beam 21 of the tool 20 according to the distance between the scaffold 4 and the frame 2, and the arm 25 is fixed to the horizontal beam 21 by bolts 26 and nuts 26 a.

A mounting bracket (not shown) fixed to the mounting bracket mounted on the frame 2 is attached to the back surface of the panel 1. An anchor nut 1a, which is open at the upper edge surface of the panel 1, is embedded in advance, and the jig 23 of the tool 20 is fixed to the anchor nut 1a. The wire 22 on the upper part of the tool 20 is suspended from the hook of the crane 4 using the chain block 7. The jig 23 is supported by a combination of two ring fittings 23a and 23b (FIG. 1) so as to be rotatable about two orthogonal horizontal axes, and a bolt for fixing the jig 23 to the panel 1 is provided. 23c (FIG. 1) and the anchor nut 1a of the panel 1 are not subjected to excessive stress.

In this state, the panel 1 is suspended from above from between the frame 2 and the scaffold 4. At this time, the hook 7 of the crane 4 is brought closer to the scaffold 4, and the pulley 27 of the arm 25 of the tool 20 is moved to the scaffold. 4 and the pulley 27 is rolled with respect to the iron pipe 4a.
The panel 1 is lowered along (see FIG. 2). afterwards,
The above operation is repeated, and the panel 1 is sequentially attached to the skeleton 2 from the lower layer of the skeleton 2.

At this time, since the horizontal beam 21 of the tool 20 is supported on the scaffold 4 by the pulley 27, it does not swing even if the panel 1 is lowered. Therefore, the worker 5 may be arranged only on the roof and the floor where the panel 1 is mounted, and need not be arranged on each floor. In addition, since it can be lowered at a high speed and finely adjusted by the chain block 7, the number of workers for mounting the panel can be reduced, and the working time can be shortened. Work efficiency and safety are improved, and panel damage can be prevented.

The horizontal beam 2 to which the arm 25 is fixed
1 may be used, but the distance between the arms and the horizontal beam 2
It is desirable to make the length of the protrusion from 1 adjustable so that it can be easily adapted to the situation at the construction site. Although the pulley 27 does not necessarily need to be magnetized, the magnetized one is safe and efficient because the pulley 27 does not come off the scaffold pipe 4a when the panel 1 is removed and the tool 20 is pulled up.

[0022]

As described above, in the panel hanging tool of the present invention, when the panel is hung by a tool, the pulley at the end of the arm is lowered along the pipe of the scaffold, and the panel is moved in the plane direction. There is no swing. Therefore, not only the safety of the worker is improved, but also it is not necessary to arrange the worker on each floor, and the worker can descend at a high speed.
Work efficiency is improved, and damage to the panel can be prevented.

If the distance between the arms and the protruding length of the arms can be adjusted, even if the width between the pipes constituting the scaffold or the distance between the scaffold and the frame at the construction site is different, it is possible to easily cope with the difference. It is convenient because you can do it. In addition, if the pulley is magnetized, the pulley moves while adsorbing to the iron pipe of the scaffold, so when removing the panel and pulling up the tool, you can work smoothly without detaching from the pipe. It is convenient.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a state in which a panel is suspended by a panel hanging tool of the present invention.

FIG. 2 is a side view for explaining a state in which a panel is hung using a panel hanger.

FIG. 3 is an enlarged side view of a part (A) of FIG. 2;

FIG. 4 is a plan view showing only the pulley shown in FIG. 3;

FIG. 5 is a perspective view showing a state where a panel is suspended by a conventional tool.

FIG. 6 is a side view for explaining a state in which a panel is hung using a conventional tool.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Panel 2 Body 3 Crane 4 Scaffold 4a Iron pipe 20 Tool 21 Horizontal beam 22, 24 Wire 23 Jig 25 Arm 27 Pulley

Claims (5)

[Claims] 1. A horizontal beam suspended at an upper portion from a hook of a crane and hanging a panel at a lower portion, the horizontal beam being attached to the horizontal beam so as to move the horizontal beam up and down along a pipe of a scaffold. A tool for hanging a panel for an outer wall, comprising a guide means attached to the panel. 2. The panel hanging tool according to claim 1, wherein the horizontal beam is suspended by a pair of wires on a hook of a crane at an upper part, and is engaged with a locking means provided on an upper edge surface of the panel. A panel hanging tool, wherein a panel having a jig at a lower end thereof is hung by a pair of wires. 3. The panel hanging tool according to claim 1, wherein the guide means comprises a pair of arms attached to both ends of the horizontal beam, and a rotatable pulley attached to a tip of the arm. A tool for hanging a panel, comprising: 4. The panel hanging tool according to claim 3, wherein a distance between the pair of arms is adjustable, and a length of the arm protruding with respect to the horizontal beam is adjustable. A panel hanging tool attached to the horizontal beam. 5. The panel hanging tool according to claim 3, wherein the pulley is magnetized so as to be movable by being attracted to an iron pipe of a scaffold. .