JP2004250188A - Hoisting fixture - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent occurrence of damage to plate bodies when the plate bodies with brittleness represented by ALC panels are stacked and transferred. <P>SOLUTION: The hoisting fixture A comprises at least two supporting members 1 that are formed substantially equally to or longer than the cargo width of the plate bodies B, are arranged on the lower surface of the plate bodies B, and support them for hoisting a mountain formed by stacking the plurality of plate bodies B having brittleness. The hoisting fixture A comprises a frame 5 having a locked member 7 to be locked to a hook of a crane and a plurality of engaging sections 8 disposed at predetermined positions that are separated equally to or longer than the cargo width of the plate bodies and along the length direction of the plate bodies, and a plurality of nylon slings 4 for connecting the supporting members 1 to the engaging sections 8 in the frame 5. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to a lifting jig which is advantageous when a plurality of brittle plate-like bodies are stacked or when the stacked ones are further transferred in parallel.
[0002]
[Prior art]
2. Description of the Related Art Lightweight aerated concrete panels (ALC panels) are often used to construct outer walls, floors, or roofs of buildings represented by houses. Although this ALC panel is lightweight and excellent in heat insulation and workability, it is brittle and may be chipped or scratched when some external force including an impact force is applied.
[0003]
ALC panels are cut to the width and length corresponding to the target building at the factory stage, and the ALC panels used for the outer walls are designed on the surface, and are stacked and stored at each site to be carried in. . Then, they are transported from the factory to the construction site. Between the factory and the building site, or after arriving at the building site, the ALC panels are transported as they are stacked.
[0004]
The stacked ALC panels are transferred using a flat string formed by knitting nylon fibers called a nylon sling, or using a jig called a triangular sling. For example, when a nylon sling is used, it is lifted and suspended by passing it through a desired position on the lower surface of an ALC panel in which two nylon slings are stacked and hooking both ends on a hook of a crane. When a triangular sling is used, a hook-shaped holding member constituting the triangular sling is hooked on the lower surface of both ends in the longitudinal direction of the ALC panel, and the center of the sling is hooked on a hook of a crane, thereby being lifted and suspended. Is done.
[0005]
Although it is not intended to lift the ALC panel, as a hanging tool for hanging a pallet in which a plurality of siding boards are stacked, a long steel body with a string body extending at both ends is passed through a gap formed under the pallet, There has been proposed a technique in which both ends of the elongated body are protruded from both sides of the pallet, and the elongated body is lifted by a cord body (for example, see Patent Document 1).
[0006]
[Patent Document 1]
JP 2000-143140 A
[Problems to be solved by the invention]
When a stack of ALC panels is to be transported by a nylon sling, when the crane is hoisted and a load is applied to the nylon sling, the nylon sling is stretched in accordance with the load, and the nylon sling moves relative to the ALC panel. The ALC panel at the top of the mountain is lifted as it moves, and when it is lowered at the destination, the ALC panel falls, causing cracks or chips, or scratches on the ALC panel. There's a problem. Further, there is a problem that the ALC panel is easily chipped at the portion where the nylon sling contacts the corner of the ALC panel at the bottom of the mountain. Furthermore, the fact that the nylon sling scratches the ALC panel means that the nylon sling is also slightly damaged at this time, which leads to a problem that the consumption of the nylon sling progresses.
[0008]
When a triangular sling is used, it is necessary to lock the lower surface of the longitudinal end of the ALC panel with a hook-shaped holding member. However, when the both ends of the ALC panel are placed on the beams or the foundation on the construction site, there is a problem that the holding member is placed on the beams or the foundation and cannot be used.
[0009]
When the length of the nylon sling is increased and the angle of the nylon sling with respect to the hook of the crane is reduced in order to prevent scratches on the ALC panel as described above, from the bottom of the stacked ALC panel to the hook. There is a problem that the distance of the ALC panel becomes large and the operation of the crane becomes difficult, and further, there is a problem that the ALC panels stacked in two rows cannot be lifted.
[0010]
Furthermore, in the lifting device described in Patent Document 1, when the ALC panels are stacked on the pallet and lifted, the siding board at the bottom of the mountain is not damaged, but the width of the pallet and the length of the long body are not damaged. In relation to this, there remains a problem that the string body may come into contact with the siding board at the top. Further, when the ALC panels stacked on the pallet are placed on a beam or a foundation, there is a problem that an operation for removing the pallet between the ALC panel and the beam or the foundation is required.
[0011]
It is an object of the present invention to be able to transport a brittle plate typified by an ALC panel without damaging it, to improve the operability of the crane by shortening the suspension length from the crane, and to stack the crane. The present invention also provides a lifting jig that can be used when directly mounting both ends in the longitudinal direction on a pedestal such as a beam or a foundation in a state where the lifting jig has good workability.
[0012]
[Means for Solving the Problems]
In order to solve the above problems, a lifting jig according to the present invention is a jig for stacking and suspending a plurality of brittle plate-like bodies, and is formed to be substantially equal to or longer than the load width of the plate-like body to be lifted. And at least two supporting members arranged and supported on the lower surface of the plate to be lifted, a locking member to be locked by a hook of a crane, and a load width equal to or larger than the load width of the plate to be lifted. A pedestal having a plurality of engagement portions provided at predetermined positions along the longitudinal direction of the body, and a plurality of cords connecting the support members and the corresponding engagement portions of the gantry. It is configured as follows.
[0013]
In the lifting jig, two support members that are substantially equal to or longer than the load width of the plate to be lifted are disposed on the lower surface of the plate, and the support width is substantially equal to or larger than the load width of the plate. The gantry provided with the engaging portion at a predetermined position in the longitudinal direction of the body was attached to the hook of the crane via the locking member, and the gantry and the support member were connected by a plurality of cords, so that the plate-shaped body was Can be held in a stable state in the state of being placed on the cradle, and when the gantry is lifted by the crane, the gantry and the supporting members are each larger than the load width of the platy body. Therefore, the cord body does not directly contact the plate-shaped body. For this reason, even when the cord body is stretched, the cord body does not rub the plate-like body, and the bottom surface and side surfaces of the plate-like body are not damaged.
[0014]
Since the support member is disposed at a desired position on the lower surface of the stacked plate members, it is possible to set the position of the support member according to the state of the place where the plate member is placed, and If there is a pedestal in the place to put it, you can put it in any place. Furthermore, since the gantry and the support member are formed of a rigid body, handling is easy and workability can be improved.
[0015]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, a preferred embodiment of the lifting jig will be described. The lifting jig of the present invention is capable of maintaining a stable package without damaging the plate-shaped body when the brittle plate-shaped body is transported in a stacked state. Is possible.
[0016]
The plate-shaped body is not particularly limited, and has a brittleness that is easily damaged by rubbing, and an ALC panel is a typical plate-shaped body. The dimensions such as the width, thickness, and length of the plate are not particularly limited.
[0017]
The support member is substantially equal to or longer than the load width of the plate. Here, the load width includes the width of the stacked plate members and the width when the stacked plate members are juxtaposed, and the stacked plate members do not necessarily have to be in one line. For example, when the plate-like body is an ALC panel, since the width dimension of this ALC panel is set to an integral multiple of the module dimension set for the building, ALC panels having twice the width of the module dimension are stacked. The load width of one peak is equal to the load width of two peaks obtained by stacking and juxtaposing two panels having a width equal to the module size. At this time, it is not necessary that the two peaks have the same height, and a smaller ALC panel or another member may be placed on one of the peaks.
[0018]
Since the weight of the stacked plate members acts on the supporting member, it is necessary that the supporting member has a strength that can withstand the weight. In other words, the support member only needs to be able to withstand the weight, and the material and structure are not limited. In consideration of workability, it is preferable that the support member is lightweight, and it is preferable to use a steel pipe having a rectangular cross section or a lip grooved steel having a substantially C-shaped cross section as such a material.
[0019]
As described above, by configuring the support member by a rigid body having sufficient strength, for example, even when a narrow plate is stacked and arranged side by side, the lower surface of the arranged plate is arranged. When lifted through the support member, the package of the plate-like body supported by the support member maintains a stable state, and the parallel plate-like bodies are inverted U-shaped, as when directly lifted by a nylon sling. There is no such thing as becoming. Further, since the nylon sling does not come into contact with the corner of the bottom plate-like body, and no force acts on this corner, there is no possibility of chipping.
[0020]
The gantry has a dimension substantially equal to or larger than the load width of the plate-like body, and has a plurality of engagement portions for connecting the string at a predetermined position along the length of the plate-like body. I have. For this reason, the gantry only needs to have a shape in which the engaging portion can be arranged, and examples of the shape include a quadrangle or an I-shaped plane. In particular, when lifting a plurality of types of plate-like bodies having different lengths, it is preferable to provide engaging portions at several places in the longitudinal direction of the gantry.
[0021]
It is preferable that the interval between the engagement portions provided in the load width direction of the plate-like body of the gantry is substantially equal to the length of the support member. In this way, by making the interval between the engaging portions in the load width direction of the gantry substantially equal to the length of the support member, the string body connecting the support member and the gantry when the plate-shaped body supported by the support member is lifted. Are substantially vertical and do not come into contact with the plate. Therefore, it is possible to prevent the string from scratching the plate-like body when the plate-like body is lifted or suspended.
[0022]
The gantry has a locking member that is locked to the hook of the crane. The shape of the locking member is not limited as long as it can withstand the load to be lifted. As such a locking member, a member obtained by bending a steel material into a circular shape, a member using a thimble, or the like can be used.
[0023]
The member connecting the locking member and the gantry is not particularly limited, and a wire rope, a steel round bar, a square bar, or the like can be used. When round bars or square bars are used, it is necessary to weld the gantry and the locking member with these bars. When a wire rope is used, it is possible to attach shackles to both ends of the wire rope and connect the gantry and the locking member via the wire rope. Considering the ease of handling and the problem of transportation, it is preferable to connect the locking member and the gantry via a wire rope.
[0024]
The cord body needs to have strength enough to withstand the load to be lifted, and any cord may be used as long as this condition is satisfied. Nylon slings and wire ropes can be used as such a cord. In consideration of ease of handling, a nylon sling having high flexibility is preferable.
[0025]
When connecting the support member and the gantry via the cord body, it is possible to fix the end of the cord body to the support member, and to engage the other end with the engaging portion of the gantry. is there. In this case, the support member and the cord body are integrated, and it is possible to hold the support member horizontally when suspended from the gantry. It is possible and the workability can be improved. When the supporting member is made of a steel pipe, it is possible to insert the cord into the steel pipe for use. Even in this case, since the support member and the cord body are integrated, it is possible to maintain the stability of the package and improve the workability.
[0026]
Next, a preferred embodiment of the lifting jig will be described with reference to the drawings. FIG. 1 is a perspective view illustrating a state in which a pile of plate bodies stacked by a lifting jig A is lifted. FIG. 2 is a side view of FIG. FIG. 3 is a diagram illustrating the configuration of the support member. FIG. 4 is a three-view drawing illustrating the configuration of the gantry. FIG. 5 is a perspective view illustrating the configuration of the gantry. FIG. 6 is a diagram illustrating an example of a connection structure between a support member and a cord.
[0027]
In this embodiment, an ALC panel B constituting an outer wall, a floor, a roof, or the like of a building is used as a plate-like body. The width of the ALC panel B is set to an integral multiple of the module size set for the target building, for example, 610 mm (twice the module size) or 305 mm (one time the module size).
[0028]
In the figure, a lifting jig A includes at least two support members 1 arranged on the lower surface of a stacked ALC panel B to support the load of the ALC panel B, and a crane such as an overhead traveling crane or a truck crane. It comprises a frame 5 to be hooked on a hook, and a nylon sling 4 which is arranged for each support member 1 and serves as a cord connecting the support member 1 and the frame 2.
[0029]
The support member 1 has a length set to approximately 630 mm, which is substantially equal to or larger than the width dimension of the ALC panel B, and is formed of a steel pipe having a rectangular cross section. The cross-sectional dimensions and wall thickness of the support member 1 are such that the ALC panel B to be lifted at a time can exhibit strength sufficient to satisfy the burden weight. The inner diameter of the support member 1 is set to be larger than the width of the nylon sling 4.
[0030]
An elastic body 2 having appropriate elasticity and a coefficient of friction is attached to the outer peripheral surface of the support member 1 on which the ALC panel B is to be mounted. This prevents the ALC panel B from being scratched.
[0031]
Further, a rubber leg 3b is attached to the surface of the support member 1 opposite to the surface on which the elastic body 2 is adhered by a bolt 3a. The bolt 3a has a function of fixing the nylon sling 4 inserted into the steel pipe constituting the supporting member 1. By tightening the nylon sling 4 with the bolt 3a, the nylon sling from both sides of the supporting member 1 is formed. 4 can be kept constant.
[0032]
Projections 1a are formed at both ends in the longitudinal direction of the support member 1. When the projection 1a is arranged on the lower surface of the ALC panel B on which the support member 1 is stacked, the projection 1a engages with the side surface of the ALC panel B to define the position, and the nylon sling 4 passed through the inside of the support member 1 is mounted on the base. It serves as a guide when bending in the direction of 5, and has a function of preventing the nylon sling 4 from being rubbed against the end face of the steel pipe constituting the support member 1 and causing damage.
[0033]
As the string member, a wire rope or a sling can be used. However, it is preferable to use a material that is easy to handle, does not have a large volume, and has little possibility of causing a scratch or the like on the ALC panel B. In this embodiment, a nylon sling 4 is used as suitable for such a condition.
[0034]
When the nylon sling 4 is passed through the support member 1 and fixed by the bolts 3a, the load acting when lifting the ALC panel B is concentrated on this fixing portion, and an excessive force acts to break the nylon sling 4. There is a fear. Therefore, as shown in FIG. 6, a loop 4a is formed by sewing a string of the same material into a loop at a predetermined position of the nylon sling 4, and the loop 4a is attached to the side of the support member 1 in the lateral direction. It is preferable to attach the nylon sling 4 to the support member 4 by inserting the bolt 3c.
[0035]
With the above configuration, the support member 1 and the nylon sling 4 do not come off, and the load acting when lifting the stacked ALC panels B does not concentrate on one point. Further, even if the nylon sling 4 is stretched, the stretching occurs equally over the entire length of the nylon sling 4 and is not consumed in a short time.
[0036]
The gantry 5 includes a rectangular frame 6, a locking member 7 that is locked to a hook of a crane (not shown), and an engaging portion 8 for attaching and detaching the nylon sling 4.
[0037]
The frame 6 has a pair of vertical members 6a along the longitudinal direction of the ALC panel B and a pair of horizontal members 6b along the width direction of the ALC panel B, and fastens both members 6a, 6b with bolts 6c. Thereby, it is formed in a square frame shape. In particular, the vertical member 6a and the horizontal member 6b are configured so that they can be easily assembled and disassembled by bolts 6c, and can be disassembled and transported as four bar-shaped members when transporting the gantry to the building site. Is configured.
[0038]
On the upper surface of the vertical member 6a constituting the frame 6, a bracket 6d is provided at a position distributed from the center in the longitudinal direction. A hole 6e is formed in the bracket 6d, and a shackle (not shown) is attached to the end of the wire rope 9 inserted through the locking member 7, and the shackle is attached to the hole 6e. The frame 6 and the locking member 7 are connected. By removing the shackle, the locking member 7 and the rope 9 can be removed from the frame 6.
[0039]
A plurality of engaging portions 8 are provided on both side surfaces of the frame 6 along the longitudinal direction. The engaging portions 8 are provided on both sides of the frame 6 at positions separated from the center in the longitudinal direction and opposed to each other. In particular, the interval between the engaging portions 8 along the width direction of the ALC panel B is configured to have a length substantially equal to the length of the support member 1.
[0040]
The engaging portion 8 includes a hook 8a fixed by welding to the side surface of the vertical member 6a and the end surface of the horizontal member constituting the frame 6, and a bar 8b for opening and closing the mouth of the hook 8a. In particular, the bar 8b has a function of preventing the nylon sling 4 engaged with the hook 8a from coming off the hook 8a.
[0041]
The locking member 7 is configured as a ring obtained by bending a steel bar into an oblong shape. The frame is connected to the frame 6 by two wire ropes 9, and the ring is hooked on a hook of the crane so that the lifting jig A can be locked to the crane.
[0042]
Therefore, the nylon sling 4 is inserted into the support member 1 in advance, and the lengths of the portions extending from both ends are equalized and fixed by the bolts 3a. While passing through the lower surface of the pile of the stacked ALC panels b placed on the sleepers, the end of the nylon sling 4 is engaged with the hook 8a of the engaging portion 8 provided on the frame 6 constituting the gantry 5, Thereafter, by operating the crane by hooking the locking member 7 on a hook of the crane, the mountain of the ALC panel B can be lifted.
[0043]
At this time, since the length of the support member 1 is substantially equal to the distance between the engaging portions 8 provided on the frame 6 along the width direction of the ALC panel B, when viewed from the end of the ALC panel B in the length direction. The nylon sling 4 keeps a substantially vertical posture between the end of the support member 1 and the engaging portion 8, and in this state, the nylon sling 4 keeps a slight gap without contacting the stacked ALC panels B. are doing.
[0044]
It is preferable that the end of the nylon sling 4 to be engaged with one of the engaging portions 8 provided on the frame 6 is appropriately selected according to the length of the ALC panel B to be lifted.
[0045]
Further, when lifting the mountain of the ALC panel B, the support member 1 can be passed through a desired position on the lower surface of the mountain, so that the sleeper can be avoided and the mountain can be placed on the beam of the building frame. In the case of mounting, it is possible to avoid the position of the beam in advance, and it is possible to easily perform loading and unloading operations.
[0046]
When transferring an ALC panel having a width approximately half the length of the support member 1, the piles of the ALC panels are arranged in two rows in parallel, and the support member 1 is lifted through the lower surface in this state. However, since the supporting member 1 has sufficient rigidity, the piles of the ALC panels arranged in two rows are not inverted C-shaped and do not come into contact with each other. It is possible.
[0047]
In this embodiment, a square steel pipe is used as the support member 1. However, the present invention is not limited to this configuration, and it is obvious that a simple square bar or a C-shaped steel may be used.
[0048]
Further, since the nylon sling 4 is connected to the frame 6 constituting the gantry 5 and the frame 6 and the locking member 7 are connected by the wire rope 9, even if the distance between the frame 6 and the locking member 7 is narrowed, the nylon 6 Since the inclination angle of the sling 4 is not affected, it is possible to increase the inclination angle of the wire rope 9 and reduce the distance from the locking member to the top of the ALC panel B. For example, in the conventional method of hooking the end of a nylon sling directly on a hook of a crane, the inclination angle between the top of the stacked ALC panel and the hook of the nylon sling reaching the hook of the crane is increased. Since a force is applied to squeeze the ALC panel, it is difficult to increase the inclination. On the other hand, in this embodiment, even if the angle of the wire rope 9 is increased, this effect is not exerted on the ALC panel B. Therefore, it is possible to reduce the height of the stacked ALC panels B at the time of lifting.
[0049]
【The invention's effect】
As described in detail above, in the lifting jig according to the present invention, the support member is disposed on the lower surface of the plate-like body, and the support member and the gantry are connected by a plurality of strings, so that the plate-like body is supported by the support member. It can be transported while maintaining a stable package when placed on top. In particular, since the gantry and the support member are each larger than the load width of the plate-shaped body, when the lifting jig is lifted by the crane, the string body contacts the plate-shaped body while maintaining a position separated from the side surface of the plate-shaped body. And the plate-like body is not damaged.
[Brief description of the drawings]
FIG. 1 is a perspective view illustrating a state in which a pile of plate-like bodies stacked by a lifting jig A is lifted.
FIG. 2 is a side view of FIG.
FIG. 3 is a diagram illustrating a configuration of a support member.
FIG. 4 is a three-view drawing illustrating the configuration of the gantry.
FIG. 5 is a perspective view illustrating a configuration of a gantry.
FIG. 6 is a diagram illustrating an example of a connection structure between a support member and a cord.
[Explanation of symbols]
A Lifting jig B ALC panel 1 Support member 1a Projection 2 Elastic body 3a, 3c Bolt 3b Rubber leg 4 Nylon sling 4a Loop 5 Mount 6 Frame 6a Vertical member 6b Horizontal member 6c Bolt 6d Bracket 6e Hole 7 Locking member 8 Engagement Part 8a hook 8b bar 9 wire rope

Claims (1)

A jig for stacking and suspending a plurality of brittle plate-like bodies, wherein the jig is formed to be substantially equal to or longer than the load width of the plate-like body to be lifted, and is arranged and supported on the lower surface of the plate-like body to be lifted. A plurality of support members, a plurality of locking members that are locked to hooks of the crane, and a plurality of locking members provided at predetermined positions along the length direction of the plate-like body that are equal to or larger than the load width of the plate-like body to be lifted A lifting jig comprising: a gantry having an engaging portion; and a plurality of cords connecting each of the support members and a corresponding engaging portion of the gantry.

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