JP2003306289A - Method for installing long member and sling jig for long member - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method of installing a long member and a sling jig for a long member for safely and efficiently lifting a plurality of long members. <P>SOLUTION: In this method of installing the long members, the plurality of long members 11 are lifted simultaneously, and installed while unloading sequentially. Before the lifting, the gravity center of the sling jig is aligned with the gravity center of each of the lifted long members, a distance for mounting each long member on the sling jig for the long members is varied, and the long members are lifted so as not to interfered with each other and installed by sequentially removing the long members starting at the long member positioned on the lowermost position. As a result, the plurality of long members can be safely and efficiently lifted and installed. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of constructing a long member that can safely and efficiently hang up a plurality of long members and can be unloaded, and a load hanging jig for a long member. .

[0002]

2. Description of the Related Art In recent years, during construction work, there have been many construction methods for precasting concrete structural members such as columns, beams, and floors to shorten the construction period and save labor, etc. When unloading to a high floor with a large number of parts, it takes a lot of time to lay it up at a predetermined place and unload the next part, which impairs the merits of the rationalized construction method. Generally, hoisting machines installed at construction sites are hoisting machines that have a hoisting capacity capable of sufficiently lifting the heaviest pillars and beams, but when hoisting relatively lightweight members such as floor members, As shown, each member 1 was hung by the wire 2 one by one, and was hung by the hook 3 of the lifting machine. This is extremely small relative to the lifting capacity of the lifting machine, resulting in operational loss. This is because there are no effective lifting jigs that can safely lift multiple members at the same time and can be installed safely.

In order to solve this, conventionally, as shown in FIGS. 5 and 6, a plurality of members 1a, 1b and 1c are hung on wires 4, 5 and 6 having different lengths, and the respective wires are hooked on a crane. The method was to hang it up from 7 and lift it up, and install it on the site sequentially from the lowest member 1a.

[0004]

However, in the conventional method shown in FIG. 4, one member (product) is lifted by the lifting device at a time and set (set) at a predetermined position, so that a large number of members (product) are set. ) Requires a lot of time and labor to be installed in a predetermined position, and the assembly work by the precast assembly method in a high-rise building caused a great loss of time in lifting the members.

In order to solve this problem, as shown in FIGS. 5 and 6, when a plurality of members are simultaneously lifted and set at a predetermined position, the wires 4, 5, and 6 are suspended when the plurality of members are lifted. Since the members 1a, 1b, and 1c interfere with each other, the center of gravity of the suspended load is not stable, and the gravity center of the suspended load moves every time the suspended loads are picked up one by one, which is a serious safety problem. . Furthermore, if an attempt is made to set the suspended load in this unstable state, the suspended members 1b and 1c will be set sequentially from the lowest member 1a.
I had to work under and there was a safety issue.
There is also a method of lifting the members to be lifted by changing the height in a direction perpendicular to the horizontal plane.
There was a problem in safety work in high places where the footing was poor because the member had to be rotated around 0 degrees. As described above, since it takes a lot of time to set the members, the construction efficiency of the precast assembly method for shortening the construction period is significantly impaired. For this reason, devising an efficient lifting jig and ensuring work safety are issues.

The present invention has been proposed in view of the above circumstances, and is capable of safely and efficiently hoisting a plurality of long members, and a work method for the long members, and a load suspending / fixing method for the long members. The purpose is to provide ingredients.

[0007]

In order to achieve the above object, the invention according to claim 1 is a method for constructing a long member, in which a plurality of long members are simultaneously lifted up and sequentially unloading. Then, the center of gravity of the load-hanging jig and the center of gravity of each long member to be lifted are made to coincide with each other, and the attachment distance of each long-length member to the load-hanging jig is changed.
Each of the long members is hoisted so as not to interfere with each other, and the members located at the bottom of the long members are sequentially removed and then the long members are constructed.

The invention according to claim 2 is a long member loading jig for lifting a plurality of long members at the same time and unloading them one by one, wherein the plurality of hanging members are substantially horizontal. Each of the pairs of hanging jigs, a plurality of hanging fittings arranged concentrically from the center of gravity of the hanging jig, and a plurality of pairs of hanging ropes attached to the hanging fittings. The center of gravity of the long member hoisted by the hanging rope is the same as the center of gravity of the load hoisting jig.

Further, the invention according to claim 3 is characterized in that the mounting position of the hanging rope member in the load hanging jig and the mounting position of the hanging metal fitting coincide with each other.

Further, in the invention as set forth in claim 4, the plurality of pairs of slings have different lengths for each pair.

Further, in the invention according to claim 5, the hanging rope is arranged at a position where it does not interfere with each of the long members to be lifted.

Further, in the invention according to claim 6, the elongated member is characterized in that an attachment angle with respect to the load-hanging jig is changed by a predetermined angle.

Further, in the invention of claim 7, the load hoisting jig is configured by arranging the same number of main beams as the number of long members to be hoisted on the same plane, and each of the main beams is long. It is characterized in that a hanging rope for lifting members is directly attached.

[0014]

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail below with reference to the drawings showing one embodiment. FIG. 1 is a front view showing a usage state of a long member load lifting jig according to the present invention, and FIG.
FIG. 4 is a plan view showing a usage state of the long member load lifting jig of the present invention. The long member load lifting jig 10 of the present invention is for lifting a plurality of long members 11 at the same time and sequentially unloading them one by one. The center of gravity G of the jig 13 and the load hanging jig 13
A long member 11 that is provided with a plurality of hanging fittings 15 arranged concentrically from ₀ and a plurality of pairs of hanging ropes 14 attached to the hanging fittings 15 and is hoisted by each pair of hanging ropes 14. Centers of gravity G _{1 to} G ₄ of the same coincide with the center of gravity of the load hanging jig 13.

In the present embodiment, the load-hanging jig 13 has a lower surface of the load-hanging jig 13 so that the mounting position of the hanging rope member 12 in the load-hanging jig 13 and the mounting position of the hanging metal fitting 15 are aligned with each other. Hanging fitting 15 that penetrates from the top to the top
May be In the case of such a configuration, the hanging rope member 12 is connected to the upper end of the hanging fitting 15 and the hanging rope 14 is attached to the lower end of the hanging fitting 15. As the sling member 12, a wire, a chain sling, and the like having the same length are used, and the upper end is connected to the shackle 16.

The loading jig 13 is a long member 1 for lifting.
The same number of main beams 17 as one is arranged on the same plane. In this embodiment, four main beams 17 are arranged at a predetermined angle α. Further, a mounting plate 18 is arranged in the center, and a frame body 19 is mounted on the periphery. Then, a hanging metal member 15 for lifting the long member is directly attached to each of the main beams 17 at a position equidistant from the center of gravity G ₀ . Further, in the present embodiment, the hanging fitting 1
Two suspension ropes 14 are attached to the cable 5. Here, the left and right suspension lines 14a, 14a attached equidistantly about the center of gravity G ₀ are configured to have the same length. Similarly, the hanging ropes 14b and 14b have the same length, and the hanging ropes 14c and 14c and the hanging ropes 14d and 14d have the same length. Further, the lengths are different in the order of the hanging rope 14a> the hanging rope 14b> the hanging rope 14c> the hanging rope 14d.

Next, the present invention constructed as described above
Construction of long members using the long member loading jig 10
The method will be described. First, as shown in FIG.
The material 11 is lifted by the hanging ropes 14, respectively. this
At this time, since the lengths of the hanging ropes 14 are different from each other, the long member
The vertical positions of i, ii, iii, and iv are different.
Also, the center of gravity G of the long member i₁And the center of gravity G of the long member ii₂When
Center of gravity G of long member iii ₃And the center of gravity G of the long member iv_FourIs
Center of gravity G of the lifting jig 13₀Is on the same vertical line as. Change
In addition, as shown in FIG. 2, the long members i, ii, iii, iv.
Is the center of gravity G₀Suspended at a position that is rotated by angle α around
Since it has been lifted, the hanging rope 14 and the long member 11 are dried.
Even if the long members are removed one by one without
My heart never fluctuates.

The long member 1 lifted as described above
1. For example, a floor member is hoisted on a higher floor of a building, and an operator constructs a long member i as shown in FIG. At this time, the other long members ii, iii, i that are simultaneously lifted
Since v does not come over the worker's head, the work can be safely performed. In addition, since the center of gravity G ₁ of the long member i to be removed for construction matches the center of gravity G ₀ of the load hanging jig 13, the work can be performed safely without the center of gravity of the suspended load moving. Therefore, it is safe to work in high places with poor footing.

FIG. 3 shows a case where the long member ii is constructed. The entire suspended load is swung by α in the direction of the arrow, the long member ii is removed, and the long member is arranged next to the long member i. Also in this case, the worker is safe because he / she is not located under the suspended load. Further, even if the long member ii is removed, the work can be performed safely without the center of gravity of the entire suspended load moving.
Such work can be repeated in order to perform work. In addition,
In the present embodiment, the case where four long members are hoisted has been described, but the same can be applied to the case where the number is more than that.

[0020]

Since the present invention has the above-mentioned structure,
The effects described below can be achieved.

According to the first aspect of the present invention, there is provided a method for constructing a long member in which a plurality of long members are simultaneously lifted and sequentially loaded and unloaded. The long member is hoisted so as to coincide with the center of gravity of the long member, and the mounting distance of each long member to the load hanging jig is changed so that each long member is hoisted so as not to interfere with each other. It will be installed by sequentially removing from the one located at.

With such a construction, the method for constructing a long member of the present invention allows a plurality of long members to be safely and efficiently hoisted, and precast assembly work in a high-rise building can be efficiently constructed. it can. In addition, unloading work does not occur during setting of the long member and unloading work.

Further, in the invention according to claim 2, there is provided a long member loading jig for hoisting a plurality of long members at the same time and sequentially unloading them one by one, wherein the plurality of hoisting members are substantially horizontal. Each of the pairs of hanging jigs, a plurality of hanging fittings arranged concentrically from the center of gravity of the hanging jig, and a plurality of pairs of hanging ropes attached to the hanging fittings. The center of gravity of the long member lifted by the hanging rope of
Since it coincides with the center of gravity of the load hoisting jig, the whole balance will not be lost even if a plurality of long members that have been hoisted are removed from below, and the work of unloading at high places can be performed safely.

In the invention according to claim 3, since the mounting position of the hanging rope member in the load hanging jig and the mounting position of the hanging metal fitting coincide with each other, bending stress is generated in the load hanging jig. Therefore, the structure of the load lifting jig can be reduced in weight.

Further, in the invention according to claim 4, since the plurality of pairs of hanging ropes have different lengths for each pair, a plurality of long members can be unloaded in order from the bottom. The efficiency and safety of can be achieved.

Further, in the invention according to claim 5, since the hanging rope is arranged at a position where it does not interfere with each of the long members to be lifted, it affects other long members when removing the long member. Unloading work can be done without

Further, in the invention according to claim 6, since the mounting angle of the long member with respect to the load hanging jig is changed by a predetermined angle, the long member is hung at the same time when the loading work and the unloading work are performed. It is possible to work safely without being unloaded from the long member that is on top. Moreover, more long members can be suspended without interfering with each other.

Further, in the invention according to claim 7, the load hoisting jig is configured by arranging the same number of main beams as the number of long members to be lifted on the same plane, and each of the main beams is long. Since the hanging rope for lifting the member is directly attached, the structure of the load hanging jig can be made simple and strong.

[Brief description of drawings]

FIG. 1 is a front view showing a usage state of a long member load lifting jig according to the present invention.

FIG. 2 is a plan view showing a usage state of the load suspending jig for the long member.

FIG. 3 is a plan view showing a usage state of the load hanging jig for the long member.

FIG. 4 is an explanatory diagram illustrating a conventional method for suspending a load for a long member.

FIG. 5 is a front view showing a case where a plurality of conventional long members are suspended.

FIG. 6 is a side view of FIG.

[Explanation of symbols]

G center of gravity 10 Loading jig for long members 11 Long member 12 Hanging rope members 13 Loading jig 14 hanging rope 15 Hanging bracket 16 shackles 17 Main beams 18 Mounting plate 19 frame

[Procedure amendment]

[Submission date] April 24, 2002 (2002.4.2)
4)

[Procedure Amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0018

[Correction method] Change

[Correction content]

The long member 1 lifted as described above
1. For example, a floor member is hoisted on a higher floor of a building, and an operator constructs a long member i as shown in FIG. At this time, the other long members ii, iii, i that are simultaneously lifted
Since v does not come over the worker's head, the work can be safely carried out. In addition, since the center of gravity G ₁ of the long member i to be removed for construction matches the center of gravity G ₀ of the load hanging jig 13, the work can be performed safely without the center of gravity of the suspended load moving. Therefore, it is safe to work in high places with poor footing.

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Akira Hashimoto             4-24-8 Shimbashi, Minato-ku, Tokyo Fuji Co., Ltd.             PS Tokyo Branch F-term (reference) 2E174 AA01 BA03 CA03 CA38                 3F004 EA04 KA01

Claims (7)

[Claims] 1. A method for constructing a long member in which a plurality of long members are simultaneously lifted and sequentially loaded and unloaded, wherein the center of gravity of a load-hanging jig and the center of gravity of each long member to be hoisted are matched. And lifting, changing the attachment distance of each long member to the load hanging jig, each long member,
A method for constructing a long member, characterized in that the long members are lifted so that they do not interfere with each other, and the ones located at the bottom of the long members are sequentially removed for construction. 2. A loading jig for a long member for simultaneously lifting a plurality of long members and unloading them one by one, wherein the loading jig is hoisted substantially horizontally by a plurality of hoisting members. A plurality of hanging fittings arranged concentrically from the center of gravity of the load hanging jig and a plurality of pairs of hanging ropes attached to the hanging fittings, and a long piece that is hoisted by the hanging ropes of each pair. The load-carrying jig for a long member, wherein the center of gravity of the member coincides with the center of gravity of the load-carrying jig. 3. The load-hanging jig for a long member according to claim 2, wherein a mounting position of the hanging rope member in the load-hanging jig and a mounting position of the hanging metal fitting coincide with each other. 4. The load hanging jig for a long member according to claim 2, wherein the plurality of pairs of hanging ropes have different lengths for each pair. 5. The hanging rope is arranged at a position where it does not interfere with each of the long members to be hoisted.
The load-hanging jig for a long member according to any one of 1 to 4. 6. The load-fixing jig for a long member according to claim 2, wherein an attachment angle of the long member with respect to a load-hanging jig is changed by a predetermined angle. Ingredient 7. The load hoisting jig is configured by arranging the same number of main beams as the number of long members to be hoisted on the same plane, and a hanging metal fitting for hoisting long members is directly attached to each of the main beams. The load-hanging jig for a long member according to any one of claims 1 to 6, characterized in that.