JP4739592B2 - Rotating multi-layer hanging jig - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a lifting jig for lifting a steel beam or the like, and more particularly to a rotary multi-layer hanging jig suitable for lifting a plurality of steel beams in a multi-layer state by a single crane operation.
[0002]
[Prior art]
As for the suspension work of a steel beam or the like at a construction site, a construction method is generally employed in which the steel beam or the like is lifted in units of one piece, conveyed to the site, and attached. That is, one piece of steel beam is lifted by one crane operation.
[0003]
[Problems to be solved by the invention]
However, when such a construction method is adopted at a construction site such as a high-rise building, the work efficiency is poor, the construction period becomes long, and the construction cost increases. It is possible to lift multiple steel beams in a multi-layered state with a single crane operation. However, with conventional lifting jigs, multiple steel beams are lifted up and down. When removing the beam, there is an upper steel beam above the operator's head, which is very dangerous. Moreover, according to such a prior art, a sling wire rope and a steel beam may interfere, and the safety of work cannot be ensured also from this meaning.
[0004]
[Means for Solving the Problems]
Therefore, the present invention solves the above-described problem, and when lifting a plurality of steel beams in a multi-layered state by a single crane operation, the plurality of steel beams are lifted at positions shifted without being lined up and down. A new state that eliminates the danger of having the upper steel beam directly above the operator during beam removal work, and also eliminates the interference between the sling wire rope and the steel beam, thus ensuring work safety. An object of the present invention is to provide a rotary multi-layer hanging jig having a configuration.
[0005]
To this end, according the present invention in claim 1, together with Tsuwa coupled engagement with crane hook is rotatably connected to the upper apex of the body in front view substantially rhombic, other 3 of the body Shackles are rotatably connected to the vertices, and slack wire ropes that become longer in length from one side to the other in the width direction of the main body are spanned on each shackle, and each shackle is connected via a sling wire rope. The balance of the main body is maintained when a suspended object with a mass is suspended, and the main body moves toward the center of gravity of the remaining suspended objects when it is sequentially removed from the suspended object suspended through the longest sling wire rope. A rotary multi-layer hanging jig configured to rotate around a hanging ring connecting point.
[0006]
The present invention according to claim 2, in rotary communication layer Tutsi device according to claim 1, in place of the shackle, and connecting the pair of omnidirectional rings at both ends of the bolts passing through the body in each of the plurality of points The omnidirectional ring is rotatable about a bolt axis and swingable about an axis orthogonal to the bolt axis.
[0007]
According to a third aspect of the present invention, in the rotary multi-layered hanging jig according to the first or second aspect, a space is provided in the main body, and at least a pair of both sides of the main body are provided as handles for reinforcing and transporting the space. These pipe ribs are provided, and the pair of pipe ribs are connected by at least one horizontal pipe.
[0008]
The present invention according to claim 4 is characterized in that a pair of rotary multi-layer suspension jigs according to any one of claims 1 to 3 is used and these are connected by a structure having an arbitrary length.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
1 and 2 show a rotary multi-layer hanging jig 10 according to an embodiment of the present invention. A hanging ring 12 is rotatably connected to an upper apex of a main body 11 formed in a substantially rhombus shape. Shackles 13a to 13c are rotatably connected to the apex.
[0010]
The suspension ring 12 is engaged and connected to the crane hook. Hanging shackle wire ropes 14a to 14c (FIG. 8) are spanned on the shackles 13a to 13c to enable lifting of objects to be suspended (hereinafter referred to as “steel beams”) such as steel beams.
[0011]
A pair of left and right space portions 15 and 15 are formed in the central portion of the main body 11 for weight reduction, and a pair of left and right pipe ribs 16 and 16 are provided on both sides of the main body 11 in order to compensate for strength reduction due to the formation of these space portions. Is provided.
[0012]
In this embodiment, the pipe ribs 16 and 16 on both sides of the main body 11 each have a semicircular arc shape, and these are integrated to form a ring-shaped pipe rib (FIG. 2). The pair of left and right pipe ribs 16 and 16 are connected by horizontal pipes 17 and 17 and further reinforced. Further, the pipe ribs 16 and 16 also serve as a handle used when the rotary multi-layer hanging jig 10 is transported.
[0013]
Each of the shackles 13a to 13c is rotatable in both directions of an arrow, as typically shown for the shackle 13b in FIG.
[0014]
3 and 4 show a rotary multi-layer hanging jig 10 'according to another embodiment of the present invention. The difference from the embodiment shown in FIGS. 1 and 2 is that the omni-direction is replaced with the shackles 13a to 13c. The ring 18 (18a, 18a to 18c, 18c) is used. That is, the bolts 19 (19a to 19c) are passed through three vertices other than the upper vertex of the rhombus body 10, and the omnidirectional rings 18a, 18a to 18c and 18c are fixed to both ends of the bolts (both sides of the main body 10). ing.
[0015]
5 shows the omnidirectional ring 18 on an enlarged scale, and the axis of the bolt 19 is typically shown for the omnidirectional ring 18c in FIG. 3 and as indicated by arrows in FIG. 5 (b). 4 is representative of the omnidirectional ring 18a (18c) in FIG. 4, and as shown by the arrows in FIG. 5 (a), the axis 21 orthogonal to the bolt axis. Is swingable in both directions around the center.
[0016]
According to this embodiment, the omnidirectional ring 18 employed in place of the shackle can rotate smoothly in all directions, and in particular can be swung in the directions as shown in FIGS. 4 and 5 (a). Since the direction ring 18 is attached to both sides of the main body 11, the sling wire ropes 14 a to 14 c (FIG. 8) can be attached to different directions on both sides of the main body 11, so that it can be adapted to various lifting states. Has the advantage of being able to.
[0017]
6 and 7 show a rotary multi-layer hanging jig 20 according to still another embodiment of the present invention, in which a pair of rotary multi-layer hanging jigs are connected by a structure having an arbitrary length. In this embodiment, a long pipe 22 having a rectangular cross section is used as a structure, substantially rhombus-shaped main bodies 23 and 23 are fixed to both ends thereof, and a hanging ring 24 is rotatably connected to an upper apex of each main body 23. Shackles 25a to 25c are rotatably connected to the other three vertices. As described in the embodiment of FIGS. 3 and 4, an omnidirectional ring may be used instead of the shackle. Reference numerals 26 and 27 denote horizontal reinforcing ribs and vertical reinforcing ribs for increasing the fixing strength between the long pipe 22 and the main bodies 23 and 23.
[0018]
In the embodiment shown in FIG. 6 and FIG. 7, a pair of rotary multi-layer suspension jigs are arranged at predetermined intervals by the long pipe 22, so that a plurality of large steel beams are in a multi-layer state simultaneously. Suitable for lifting with.
[0019]
FIG. 8 shows the operation of the rotary multi-layer hanging jig of the present invention. In this figure, the rotary multi-layer hanging jig 10 shown in FIGS. 1 and 2 is shown, but another embodiment is shown. The operation when using the above-described rotary multi-layer hanging jig is substantially the same.
[0020]
FIG. 8A shows a state in which steel beams 28a to 28c having the same mass are suspended from the shackles 13a to 13c via sling wire ropes 14a to 14c. Since the shackles 13a and 13c are in a symmetrical position around the central shackle 13b, and the steel beams 28a to 28c have the same mass, in this state, the balance of the rotary multi-layer hanging jig 10 is maintained. As is clear from the figure, the lengths of the sling wire ropes 14a to 14c are sequentially increased.
[0021]
When the steel beam 28c suspended from the longest sling wire rope 14c is removed and transported to the construction site in this state, the main body 11 has the remaining two steel beams 28a and 28b centered on the connection point with the suspension ring 12. It rotates counterclockwise in the figure toward the center of gravity, and the state shown in FIG. 8B is obtained. Since the suspension ring 12 and the shackles 13a to 13c are both rotatably connected to the main body 11, the state movement from FIG. 8 (a) to FIG. 8 (b) is performed smoothly.
[0022]
Next, when the steel beam 28b suspended from the central sling wire rope 14b is removed, the main body 11 is directed counterclockwise in the figure toward the center of gravity of the remaining steel beam 28a with the connection point with the suspension ring 12 as the center. It further rotates and it will be in the state shown in FIG.8 (c). In this state, when the steel beam 28a suspended from the sling wire rope 14a is removed, all the suspended loads are released, so that the main body 11 rotates in the clockwise direction around the connection point with the suspension ring 12. Then, it returns to the state shown in FIG.
[0023]
Although FIG. 8 shows a case of three-stage suspension in which steel beams 28a to 28c of equal mass are suspended on the shackles 13a to 13c via sling wire ropes 14a to 14c, this embodiment is applied to two-stage suspension. In order to do so, it is only necessary to suspend the steel beams 28a and 28c of equal mass from the shackles 13a and 13c at both ends via the sling wire ropes 14a and 14c without using the central shackle. In this case, when the steel beam 28c suspended from the longer sling wire rope 14c is removed, the main body 11 is centered on the connection point with the suspension ring 12 toward the center of gravity of the remaining steel beam 28a. It will rotate counterclockwise and it will be in the state shown in FIG.8 (c).
[0024]
When used in two-stage suspension, when the steel beam 28c is removed, the remaining steel beam 28a approaches the removal position of the steel beam 28c all at once, so that the difference in the length of the sling wire ropes 14a, 14c is increased. It is preferable to take.
[0025]
【The invention's effect】
According to the rotary multi-layer suspension jig of the present invention, when lifting a plurality of steel beams in a multi-layer state by a single crane operation, the plurality of steel beams are lifted at positions shifted without being lined up and down, When the lower steel beam is removed, a dangerous situation in which the upper steel beam is present right above the operator is avoided. In addition, the work safety can be ensured by eliminating the interference between the sling wire rope and the steel beam.
[0026]
[Brief description of the drawings]
FIG. 1 is a front view of a rotary multi-layer hanging jig according to an embodiment of the present invention.
2 is a side view of the rotary multi-layer hanging jig of FIG. 1. FIG.
FIG. 3 is a front view of a rotary multi-layer hanging jig according to another embodiment of the present invention.
4 is a side view of the rotary multi-layer hanging jig in FIG. 3. FIG.
5 is an enlarged view showing an omnidirectional ring used in the rotary multi-layer hanging jig shown in FIGS. 3 and 4. FIG.
FIG. 6 is a front view showing another embodiment of the present invention in which a pair of rotary multi-layer hanging jigs are connected by a structure having an arbitrary length.
7 is a side view of the rotary multi-layer hanging jig in FIG. 6. FIG.
FIG. 8 is a state diagram in which three steel beams are lifted in a multi-layered state using the rotary multi-layer hanging jig shown in FIGS. 1 and 2, and the longest sling wire rope from the state of (a). It is the state figure (b) which removed the suspended steel beam, and the state figure (c) which removed the steel beam suspended with the center sling wire rope from the state of (b).
[0027]
[Explanation of symbols]
10, 10 ', 20 Rotating multi-layer hanging jig 11 Main body 12 Suspension rings 13a to 13c Shackles 14a to 14c Sling wire rope 15 Space portion 16 Pipe rib 17 Horizontal pipe 18 (18a to 18c) Omnidirectional ring 19 Bolt 21 Bolt shaft and Orthogonal shaft 22 Long pipe 23 Main body 24 Suspension ring 25a-25c Shackle 26 Horizontal reinforcing rib 27 Vertical reinforcing rib 28a-28c Steel beam

Claims (4)

A suspension ring engaged with and connected to the crane hook is rotatably connected to the upper apex of the main body having a generally rhombic shape when viewed from the front, and shackles are rotatably connected to the other three apexes of the main body. A slinging wire rope that increases in length sequentially from one to the other in the width direction of the main body is spanned, and the balance of the main body is maintained when an equal mass suspended object is hung on each shackle via the slinging wire rope. The main body is configured to rotate about the suspension ring connection point toward the center of gravity of the remaining suspended object when sequentially removed from the suspended object suspended through the longest sling wire rope. A rotating multi-layer hanging jig. Instead of the shackle, a pair of omnidirectional rings are connected to both ends of the bolt that penetrates the main body at each of the plurality of points, and the omnidirectional ring is rotatable about the bolt axis and orthogonal to the bolt axis. The rotary multi-layer hanging jig according to claim 1, wherein the jig is swingable about an axis. A space portion is provided in the main body, and at least a pair of pipe ribs are provided on both sides of the main body as handles for reinforcing and transporting the space portion, and the pair of pipe ribs are connected by at least one horizontal pipe. The rotary multi-layer hanging jig according to claim 1 or 2 . A hanging jig characterized by using a pair of rotary multi-layer hanging jigs according to any one of claims 1 to 3 and connecting them with a structure having an arbitrary length.

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