JP7165551B2 - Hanging jig, hanging unit and floor construction method - Google Patents

Description

The present invention relates to a hoisting jig, a hoisting unit, and a floor construction method for hoisting objects, and more particularly, to a hoisting jig, a hoisting unit, and a hoisting jig that are used to simultaneously hang a plurality of objects. It relates to a floor construction method.

In general, when suspending a heavy object that is difficult to lift manually, it is necessary to suspend it using a crane or the like. At that time, it has been proposed to perform the work using a hanging jig for hanging the object.

Patent Document 1 discloses a hoisting jig used for hoisting an object using a hole provided in the object, the hoisting jig comprising a main body portion composed of a shaft, a hook portion, and an operating portion. It is described that an ALC floorboard, which is an object to be hung, is installed between beams using a tool.

Specifically, the hoisting jig of Patent Document 1 includes a main body provided with a connecting portion connected to the hoisting jig on the base end side, and a hook rotatably attached to the distal end of the main body. and an operating part slidably attached to the main body, and in the retracted position where the operating part is retracted to the base end side, the hook rotates by its own weight to become coaxial with the main body. By being in the first state, the hook can be inserted into the hole of the ALC floor plate that is the object, and at the advanced position where the operating part has advanced to the tip side, the hook is rotated by the operating part and the main body The hooking portion is prevented from slipping out of the hole of the ALC floor plate, which is the object, by entering the second state where the hooking portion intersects with the portion.

Further, in Patent Document 2, a step of arranging plate-like members such as PC floorboards having through-holes formed in them in a horizontal stack state in a plurality of stages while maintaining intervals in the vertical direction, and arranging the through-holes in series; A step of inserting a hanging jig (hanging metal fitting) into the inside and a hook portion (cotter) at the lower end of the hanging jig are horizontally expanded to lift the plate-shaped member, thereby conveying the plate-shaped member to a predetermined position. A conveying method for horizontally stacked plate-like members is described, which performs a step of folding hooks, lifting a hanging jig, and detaching from the plate-like members.

JP 2007-302423 A JP-A-5-239924

Although the hanging jig described in Patent Document 1 has a simple structure, it can only hang one object, specifically, one floorboard, so it cannot hang multiple objects at the same time. It was not possible to install floorboards between beams continuously from a state in which multiple floorboards were suspended.

In addition, the technique described in Patent Document 2 requires a link mechanism, a hydraulic cylinder, and the like as a mechanism for rotating and folding the hooking portion, resulting in a complicated structure.

As described above, it is a problem to improve the workability of the work of simultaneously lifting a plurality of objects and installing the plurality of objects at their respective target positions while using a jig with a simple configuration.

The present invention has been made in view of the above problems, and an object of the present invention is to enable simultaneous lifting of a plurality of objects, and installation of the plurality of objects at respective intended positions. To provide a hoisting jig with a simple structure.

The above-mentioned problem is solved by the hanging jig of the present invention, which is a long hanging jig used for hanging a plurality of objects using through holes formed in the objects, and a main body provided with a connecting portion connected to the hanging means on the base end side of the hanging jig; and an operating portion attached to the outside of the main body portion coaxially with the main body portion, wherein the operating portion is positioned between the base end side and the distal end side of the main body portion with respect to the main body portion. When the actuating portion retreats to the base end side of the main body, the hook rotates by its own weight and becomes a first state in which it is coaxial with the main body, When the hook portion can be inserted into the through hole of the object and the operating portion advances to the distal end side of the main body portion, the hook portion is rotated by the operating portion to intersect with the main body portion. In the second state, the hook is prevented from coming out of the through hole, and the hook is formed flat by notching a lower portion of the hook in the second state. , the hooking portion is provided with a magnet that generates an attractive force with respect to the body portion at a position above the hooking portion facing the body portion in the first state .

In the hoisting jig of the present invention configured as described above, in the second state in which the hook is rotated, the lower portion is cut out in a planar shape, so that the hook can be lifted by its own weight. When returning to the first state, the hook is likely to be coaxial with the main body. Therefore, according to the lifting jig of the present invention, it is possible to lift a plurality of objects at the same time and install the plurality of objects at their respective target positions, although the structure is simple. Furthermore, when the hoisting jig is pulled out from the object, the hook provided at the tip of the hoisting jig is prevented from being unintentionally caught on the object.
In addition, according to the above-mentioned problem, according to the hanging jig of the present invention, a long hanging jig used for hanging a plurality of objects using through holes formed in the objects, A main body part provided with a connection part connected to a hanging means on the base end side of the scale-shaped hanging jig, and a rotatably attached to the front end side opposite to the base end side of the main body part A hook portion and an operating portion attached to the outside of the main body portion coaxially with the main body portion, wherein the operating portion is positioned between the base end side and the distal end side of the main body portion. and when the operating portion retreats to the base end side of the main body, the hook rotates due to its own weight and becomes a first state in which it is coaxial with the main body. Then, when the hook portion can be inserted into the through hole of the object, and the operating portion advances to the distal end side of the main body portion, the hook portion is rotated by the operating portion to the main body portion. By being in the second state intersecting with, the hooking portion is prevented from coming off from the through hole, and the hooking portion is formed in a planar shape by notching a portion that is the lower side in the second state. and the working part is solved by forming a plurality of markers spaced apart in the longitudinal direction.

Further, in the above configuration, it is preferable that a direction support portion is formed on the base end side of the main body portion to indicate a direction parallel to the hook portion in the second state.
With the above configuration, the direction of the hook can be determined from the base end side even when the hook is placed between objects and the hook cannot be directly viewed.

Further, in the above configuration, the hook may be provided with a magnet that generates an attractive force with respect to the main body at a position above the hook that faces the main body in the first state.
In the above configuration, a suction force is generated so that the hook is on the same axis as the main body in the first state, so the return from the second state to the first state is facilitated.

Further, in the above configuration, it is preferable that the actuating portion is formed with a plurality of markers spaced apart at predetermined intervals in the longitudinal direction.
In the above configuration, since the working part has a plurality of markers in the longitudinal direction, when the hanging jig is inserted into each hole of the plurality of objects, the working part of the hanging jig can be applied to the plurality of objects. It is possible to visually grasp the position of the target.

In addition, according to the suspension unit of the present invention, at least two of the suspension jigs are used, and between the cable connected to the connection portion of the suspension jig and the adjacent cable. tensioning members arranged to maintain the ends of adjacent said strands at a predetermined distance from each other.
According to the hoisting unit of the present invention configured as described above, when one-point hoisting is performed, the ropes connected to the connecting portion on the base end side of the hoisting jig incline in a direction approaching each other. The hanging jig may bend. The tensioning member maintains the ends of adjacent ropes at a predetermined distance from one another, thereby preventing the lifting jig from being subjected to forces at the ends of the ropes, thereby preventing bending of the lifting jig. Deformation is suppressed.

Further, according to the floor construction method of the present invention, a floor plate having stepped portions formed at both ends in the longitudinal direction of a long floor plate and through-holes formed in the stepped portions, a preparation step of stacking and arranging the through-holes in multiple stages so as to be aligned; a first construction step of supporting a plurality of the floorboards by rotating the hooking portion in the gap formed by the stepped portion and engaging with the lower surface of the floorboard; and lifting the hanging jig. a second construction step of transporting and arranging the floorboards to a predetermined position; and with the hook portion coaxial with the main body portion, the hanging jig is pulled up to lift the bottom floorboard of the multi-tiered stack. a third construction step of detaching; a fourth construction step of moving the remaining stacked floorboards to a position adjacent to the floorboards detached in the third construction step; The problem is solved by repeating the steps to form a floor surface by arranging the floorboards, and repeating the above steps to construct the floor surface at the floor surface forming position.
With the above configuration, it is possible to continuously arrange a plurality of floorboards at predetermined positions, and to construct floors efficiently.

According to the hoisting jig of the present invention, it is possible to simultaneously lift a plurality of objects and improve the workability of the work of installing the plurality of objects at their respective target positions.
Further, according to the suspension unit according to the present invention, even when an object is suspended by one-point suspension, by maintaining the ends of the adjacent ropes at a predetermined distance from each other by the tension member, This suppresses bending and deformation of the hanging jig.
Further, according to the floor construction method according to the present invention, a plurality of floor boards can be continuously arranged at predetermined positions, and the floor can be constructed efficiently.

It is the (a) front view and (b) side view of the hanging jig which concerns on one Embodiment of this invention. It is the (a) front view and (b) side view which expanded the structure by the side of the proximal end of the hanging jig which concerns on one Embodiment of this invention. It is the (a) front view and (b) side view which expanded the structure by the side of the front-end|tip of the hanging jig which concerns on one Embodiment of this invention. FIG. 4 is a schematic explanatory diagram showing the movement of the hook portion of the hanging jig according to the embodiment of the present invention; It is (a) front view and (b) top view of the tension member used with the suspension jig|tool which concerns on one Embodiment of this invention. FIG. 6 is a cross-sectional view taken along line AA of FIG. 5 for explaining a lock mechanism provided in the tension member; It is a figure which shows the usage aspect of the hanging jig|tool which concerns on one Embodiment of this invention, and is a figure which shows the state which hung the ALC floorboard of 4 sheets. It is a figure which shows the state which installed the ALC floor board which is a hanging object between beams. It is a figure which shows the construction procedure of ALC floorboards using the lifting jig which concerns on one Embodiment of this invention, and is typical sectional drawing which shows the state which lifts four ALC floorboards. FIG. 4 is a diagram showing a procedure for constructing an ALC floorboard using a hanging jig according to one embodiment of the present invention, and is a schematic cross-sectional view showing a state in which the hanging jig is pulled out from the lowermost ALC floorboard. FIG. 4 is a diagram showing a construction procedure of an ALC floorboard using a hanging jig according to one embodiment of the present invention, and is a schematic cross-sectional view showing a state in which the ALC floorboard is installed between beams. FIG. 4 is a diagram showing a procedure for constructing an ALC floorboard using a hanging jig according to one embodiment of the present invention, and is a schematic cross-sectional view showing a state when the hanging jig is pulled out from the final ALC floorboard.

1 to 12, the configuration of a hanging jig according to one embodiment (hereinafter referred to as the present embodiment) of the present invention will be described below. FIG. 1 is (a) a front view and (b) a side view of a hanging jig according to this embodiment. FIG. 2 is (a) a front view and (b) a side view enlarging the structure of the base end side of the suspension jig according to the present embodiment, and FIG. It is the (a) front view and (b) side view which expanded the structure of. 4A and 4B are schematic explanatory diagrams showing the movement of the hook portion of the hanging jig according to the present embodiment. FIG. 5 is (a) a front view and (b) a top view of the tension member used together with the suspension jig according to this embodiment. FIG. 6 is a cross-sectional view taken along line AA of FIG. 5, and is a diagram for explaining a lock mechanism provided in the tension member. FIG. 7 is a diagram showing how the hanging jig according to the present embodiment is used, and FIG. 8 is a diagram showing a state in which the ALC floorboard, which is the object to be hung, is installed between the beams. 9 to 12 are schematic cross-sectional views showing the procedure for constructing ALC floorboards using the hanging jig according to this embodiment. In each figure, arrows indicate the front-back direction, the up-down direction, and the width direction of the hanging jig.

<Hanging jig 1>
First, the application, material, shape, etc. of the hanging jig 1 according to the present embodiment will be described.
The elongated hanging jig 1 (hereinafter simply called the hanging jig 1) according to the present embodiment is used to hang a plurality of objects using through holes formed in the objects. be. As shown in FIG. 1, the hoisting jig 1 includes a body portion 2 provided with a connecting portion 5 connected to a hoisting means (also referred to as a wire W or a rope, which will be described later) on the base end side, and a main body portion 2. Main components include a hook 4 rotatably attached to the distal end on the side opposite to the base end, and an operating part 3 attached to the outside of the main body 2 on the same axis as the main body 2. there is The hanging jig 1 is preferably made of metal from the viewpoint of strength and durability.

The hanging jig 1 shown can be used, for example, to hang an ALC floorboard using a through hole provided in the floorboard (for example, an ALC floorboard) as described later, and as shown in FIG. A ring-shaped connecting portion 5 is provided at the proximal end portion of the portion 2 . The body portion 2 is formed of a shaft body having a circular cross section, and a hook portion 4 is rotatably attached by a pin 6 to the end portion opposite to the base end portion, as shown in FIG.

(Operating part 3)
As shown in FIG. 2, the operating part 3 is formed of a tubular body having a circular cross section larger than that of the body part 2. By inserting the main body part 2 into the operating part 3, the operating part 3 can is slidably attached to the body portion 2 between the proximal end side and the distal end side of the.

(hook part 4)
The hook portion 4, as shown in FIG. 3, consists of a central portion 4a and engaging portions 4b connected to both ends thereof. The engaging portion 4b is rotatably attached to the main body portion 2 by a pin 6 so as to sandwich the end portion of the main body portion 2, and the position of the center of gravity of the hook portion 4 is closer to the hook portion than the pin 6 is attached. It is located on the central portion 4a side (in other words, the hook portion 4 is pivotally attached to the main body portion 2 by a pin 6 with its center of gravity shifted downward). At the end opposite to the central portion 4a of the hook portion 4, an inclined surface 4c is formed which is inclined outward toward the central portion 4a.

The hanging jig 1 shown in FIGS. 1 to 3 is in the first state in which the hook portion 4 is rotated by its own weight to become coaxial with the main body portion 2 . Here, as shown in FIGS. 3 and 4 , the hooking portion 4 can be rotated by the operating portion 3 to transition to the second state in which it intersects with the main body portion 2 . The upper surface (base end side) of the hook 4 in the second state is defined as an upper surface 4d, and the lower surface (distal end side) of the hook 4 is defined as a lower surface 4e.

Attachment of the hanging jig 1 to the object to be hung is performed as follows. As shown in FIG. 3(a), when the operating portion 3 is lifted toward the proximal end (retracted state), the main body portion 2 movably inserted into the operating portion 3 is moved by its own weight. move downwards relative to In this first state (released state), the hook portion 4 rotatably attached to the end portion of the main body portion 2 by the pin 6 rotates by its own weight so that the central portion 4a faces downward (front end side). to rotate. That is, since the center of gravity is closer to the central portion 4a than the mounting position of the pin 6, the hook portion 4 rotates around the pin 6. As shown in FIG. In the first state (released state), the main body portion 2 and the hook portion 4 are on the same axis, so that the hanging jig 1 can be inserted through the through hole provided in the object to be hung.

When the hook 4 has passed through the through-hole of the object to be hung and the hand holding the operating part 3 is returned to the main body part 2 or the connecting part 5, the operating part 3 is lifted by its own weight as shown in FIG. 3(a). , and the slope 4c provided at the end of the hooking portion 4 is urged by the tip portion 3a of the operating portion 3, so that the hooking portion 4 rotates around the pin 6. move.

As shown in FIG. 4, in the second state (fixed state) in which the operating portion 3 is completely lowered, the hook portion 4 is substantially horizontal (in other words, the hook portion 4 is positioned between the main body portion 2 and the operating portion 3). axes are perpendicular to each other). In this second state (fixed state), the hook portion 4 is prevented from coming out of the through-hole, so that the wire W (rope) as the hanging means is connected to the ring-shaped connecting portion 5 of the hanging jig 1. Then, an object such as an ALC floorboard can be lifted by a crane or the like.

Here, the hoisting jig 1 is used to hang a plurality of objects, for example, floorboards, in a state in which they are stacked horizontally in a plurality of tiers. ) to rotate the hook 4 . Therefore, if the length of the center portion 4a of the hook portion 4 is long, the hook portion interferes with the floor plate and cannot be rotated, so it is necessary to shorten the length of the center portion 4a. However, if the center portion 4a is shortened, the force of rotation due to its own weight is weakened, so the hook portion 4 may be slightly inclined with respect to the main body portion 2. As shown in FIG. In order to solve such problems, the hook portion 4 of the hanging jig 1 is designed to be coaxial with the main body portion 2 as described below.

Specifically, as shown in FIGS. 3 and 4, in the second state (fixed state) in which the hook 4 is rotated, the lower portion, that is, the lower surface 4e is formed by notching in a planar shape. there is With such a configuration, the center of gravity of the central portion 4a is positioned closer to the upper surface 4d than to the lower surface 4e. Therefore, when the hook 4 returns to the second state (fixed state, FIG. 4) and the first state (released state, FIG. 3) by its own weight, the hook 4 is likely to be coaxial with the main body 2. As shown in FIG. Therefore, when the hanging jig 1 is pulled out from the object, the hook portion 4 provided at the tip of the hanging jig 1 is prevented from being unintentionally caught on the object to be hung.

Furthermore, as shown in FIG. 3, the hook 4 has a magnet M. As shown in FIG. Specifically, the magnet M is configured to generate an attractive force so that the hook portion 4 is coaxial with the main body portion 2 in the first state (released state, FIG. 3). Specifically, the hook 4 is provided with a magnet M that generates an attractive force with respect to the main body 2 at a position facing the main body 2 above the hook 4 in the first state (released state, FIG. 3). there is Since the magnet M is arranged so as to generate an attractive force so that the hook portion 4 is coaxial with the main body portion 2, the second state (fixed state, FIG. 4) changes to the first state (released state, FIG. 3). ) is promoted. Therefore, when the hanging jig 1 is pulled out from the object, the hook portion 4 provided at the tip of the hanging jig 1 is prevented from being unintentionally caught on the object to be hung.

(Direction indicator 7)
As shown in FIGS. 1 and 2, a direction indicating portion 7 is formed on the base end side of the body portion 2 to indicate a direction parallel to the hook portion 4 in the second state. Even if the hook 4 on the distal end side is placed between objects to be hung, or when the hook 4 cannot be seen directly, the direction indicator 7 on the proximal side makes it possible to detect the direction of the hook 4. can be determined on the proximal side (hand side).

(Marker 8)
As shown in FIG. 1, the operating portion 3 is formed with a plurality of markers 8 spaced at predetermined intervals in the longitudinal direction. Since the operating part 3 has a plurality of markers 8 in the longitudinal direction, it is possible to determine the position of the operating part 3 with respect to the plurality of objects when the hanging jig 1 is inserted into each hole of the plurality of objects. It is possible to visually grasp whether or not. Specifically, as shown in FIG. 9, each marker 8 is formed so that each marker 8 is positioned on the upper surface of each object when the object is hung by the hanging jig 1 . In other words, the distance between the markers 8 adjacent in the longitudinal direction of the operating portion 3 is approximately the distance between the top surface and the bottom surface of the object (for example, the ALC floor plate 50 described later) (that is, the maximum thickness of the object). formed to match.

<Tension member 10>
FIG. 5 shows a tensioning member 10 used in combination with a suspension jig 1 and a rope (for example, a wire W). The suspension jig 1 and the tension member 10 constitute a suspension unit in this embodiment. As will be described later, the tension members 10 are arranged between the ropes connected to the adjacent hanging jigs 1, and the ends of the adjacent ropes (ends Wa of the wires W to be described later) are spaced apart from each other by a predetermined distance. It is for keeping them apart.

The tension member 10 includes a first member 11 having a first wire receiving portion 11a on one end thereof, and a slidable outer side of the first member 11, the other end opposite to the first wire receiving portion 11a. and a second member having a second wire receiving portion 12a in the second member. 5 and 6, the first member 11 has a plurality of first through holes 11b formed in its longitudinal direction, and the second member 20 has a plurality of second through holes 11b formed in its longitudinal direction. A hole 12b is formed. A lock pin 13 constituting a lock mechanism is inserted into the first through hole 11b and the second through hole 12b, so that the first member 11 and the second member 20 cannot slide relative to each other. It is locked (FIG. 6(a)).

A plate 14 is attached to the lower portion of the lock pin, and as shown in FIG. 6A, the lock pin 13 is removed from the first through hole 11b and the second through hole 12b by lifting the plate 14 upward. By separating, the lock of the first member 11 and the second member 20 is released. In the unlocked state, the lengths of the first member 11 and the second member 20 are adjusted. Then, by inserting the lock pin 13 at an appropriate position where the first through-hole 11b and the second through-hole 12b overlap, the first member 11 and the second member 20 are separated while the tension member 10 has a desired length. are locked against each other. Thus, by being able to adjust the length of the tensioning member 10 in its longitudinal direction, it is possible to adjust the distance that the tensioning member 10 separates the ends of adjacent strands from each other, so that different It is possible to apply the tension member 10 also to objects of any size.

FIG. 7 is a view showing the manner of use of the hoisting jig 1, the tension member 10, and the wire W as the rope, in which the four ALC floorboards 50A to 50D are hung at one point by a crane (not shown). is shown. In this way, when one-point suspension is performed, the wires W connected to the connecting portions 5 on the base end side of the suspension jig 1 are inclined so that they approach each other, and the suspension jig 1 may be bent. There is Here, the ends Wa of the adjacent wires W are kept apart from each other by a predetermined distance (that is, the distance between the two adjacent hanging jigs 1) by the tension member 10, and the ends Wa of the wires W are Since force is prevented from being applied to the hanging jig 1 (more specifically, the connection portion 5 of the hanging jig 1), the bending and deformation of the hanging jig 1 is suppressed.

<Floor construction method using hanging jig 1>
Next, a floor construction method using the hanging jig 1 will be described with reference to FIGS. 8 to 12. FIG. In the following, the case where the object to be hung is the ALC floorboard 50 (plate-shaped member) having a stepped portion on the lower surface will be described as an example. Here, ALC is an abbreviation for Autoclaved Lightweight Concrete, and is also called lightweight cellular concrete. In general, ALC flooring is a flooring material for construction in which lightweight cellular concrete having numerous cells is molded into a predetermined panel shape, and reinforcement reinforcing bars are embedded in the panel. ALC floorboards are known for their ability to easily construct first and second floors with excellent sound insulation, heat insulation, and creaking resistance.

FIG. 8 is a diagram showing a state in which an ALC floorboard, which is an object to be hung, is installed between beams. As shown in FIG. 8, when installing the ALC floorboards 50 on the beams H arranged side by side, the plurality of ALC floorboards 50 are suspended at the same time, and sequentially installed one by one from the lower ALC floorboard 50. is efficient.

(Preparation process)
As shown in FIG. 9, in the preparatory step, four ALC floorboards 50 are arranged in a horizontally stacked state, and the respective through holes 51 are aligned in series. The elongated ALC floor plate 50 has stepped portions 52 formed on the lower surface at both ends in the longitudinal direction, and through holes 51 are formed in the stepped portions 52 . Then, as shown in FIG. 9 , a gap 53 is formed by the step portion 52 . The through holes 51 are holes used when attaching the ALC floorboard 50 to the frame of the building.

(Putting process)
Next, in the insertion step, the hanging jig 1 is attached to the four stacked ALC floorboards 50 . Specifically, the hanging jig 1 is inserted through the through holes 51 of the plurality of ALC floorboards 50 in a state (first state) in which the hook portion 4 is coaxial with the main body portion 2 . Specifically, as shown in FIG. 1, the operating portion 3 is lifted by hand to move the main body portion 2 downward by its own weight, thereby establishing a first state (released state). In the first state (released state), the body portion 2 and the hook portion 4 are on the same axis, so as shown in FIG. can be inserted.

(First construction process)
Next, in the first construction step, the hooking portion 4 is rotated in the gap 53 formed by the stepped portion 52 and engaged with the lower surface of the lowest ALC floor plate 50A to support the four ALC floor plates 50. Specifically, as shown in FIG. 9, when the hook 4 has passed through the through holes 51 of all the ALC floorboards 50, the hand holding the operating part 3 is returned to the main body 2 or the connecting part 5. Then, the operating part 3 is lowered by its own weight, and the hook part 4 rotates about the pin 6. - 特許庁As shown in FIG. 4, in the second state (fixed state) in which the operating portion 3 is completely lowered, the hook portion 4 is substantially horizontal, and the upper surface 4d of the bottom surface of the ALC floor plate 50A near the step portion 52 is attached to the lower surface. abuts. In this second state (fixed state), by connecting the end Wa of the wire W as the hanging means to the ring-shaped connecting portion 5 of the hanging jig 1, the wire W is supported by the hanging jig 1 by a crane or the like. Four ALC floorboards 50 can be lifted at the same time. In this manner, the hook portion 4 of the hanging jig 1 can rotate in the gap 53 formed by the stepped portion 52 . As shown in FIG. 9, the distance between the adjacent markers 8 is formed so as to substantially match the maximum thickness of the ALC floorboards 50, so each marker 8 can be positioned on the upper surface of each of the ALC floorboards 50A to 50D. become.

(Second construction process)
Next, in the second construction step, the ALC floorboard 50 is conveyed and placed at a predetermined position with the lifting jig 1 raised. Specifically, the hanging jig 1 is lifted from the state shown in FIG. do.

(Third construction process)
Next, in the third construction step, the hanging jig 1 is pulled up to separate from the lowermost ALC floor plate 50A in a state where the hook portion 4 is coaxial with the main body portion 2 (first state). Specifically, when the wire W (not shown) is lowered while the ALC floor plate 50A is placed on the beam H, the hanging jig 1 is lowered by its own weight while remaining in the second state (fixed state). After that, when the operating part 3 is lifted, the operating part 3 moves upward with respect to the main body part 2. Therefore, as the second state (fixed state) is released, the hooking part 4 rotates around the pin 6 by its own weight. Then, in the first state (released state) in which the operating portion 3 is retracted toward the base end side, the main body portion 2 and the hook portion 4 are on the same axis.

In this state, the hanging jig 1 is pulled up to separate from the lowest ALC floorboard 50A, and the hook 4 is placed in the gap 53 between the ALC floorboards 50A and 50B. At this time, the position of the hook portion 4 can be estimated by visually confirming the marker 8 . In the gap 53 between the ALC floor plate 50A and the ALC floor plate 50B, the operation part 3 is operated to turn the hook part 4 substantially horizontally to the second state (fixed state). By lifting up the hoisting jig 1 as it is, the hook 4 comes into contact with the lower surface of the second ALC floor board 50B, and the three ALC floor boards 50B to 50D are lifted.

(4th construction process)
Next, in the fourth construction process, the remaining three stacked ALC floor boards 50B to 50D are moved to a predetermined position adjacent to the ALC floor board 50A removed in the third construction process.

Then, the second construction process to the fourth construction process are repeated to arrange the second ALC floor board 50B on the beam H (FIG. 11). Then, the hook portion 4 of the hanging jig 1 is arranged in the gap 53 between the ALC floorboard 50B and the ALC floorboard 50C. After that, the ALC floorboard 50C and the ALC floorboard 50D are arranged on the beam H by repeating the same procedure.

As described above, a plurality of ALC floorboards 50 are hung at the same time, and the ALC floorboards 50 are successively installed on the beams H one by one in order from the lower ALC floorboards 50 . In this way, the floor is constructed by repeating the above steps for constructing the floor at the floor formation position.

The hook 4 can be rotated in a space between adjacent objects (for example, a gap 53 between the ALC floorboard 50A and the ALC floorboard 50B) while being inserted into the through hole 51 of the ALC floorboard 50. Therefore, it is possible to easily perform the work of continuously installing a plurality of ALC floorboards 50 at their respective target positions.

<Modification>
Although the configuration of the hanging jig 1 according to one embodiment of the present invention has been described above, the above embodiment is merely an example for facilitating understanding of the present invention, and limits the present invention. not a thing That is, the present invention can be modified and improved without departing from its spirit, and the present invention includes equivalents thereof.

In particular, the structure, material, shape, dimensions, etc. of the hanging jig 1 are not limited to those described in the above embodiments, and can be arbitrarily designed without departing from the gist of the present invention. be.

Moreover, there is no particular limitation on the specific forms of the body portion 2, the operating portion 3, the hook portion 4, the connecting portion 5, etc., and the cross-sectional shapes of the body portion 2 and the operating portion 3 may be rectangular. In the above embodiment, the case where the object to be hung is the ALC floorboard 50 is shown. There may be.

Reference Signs List 1 Hanging jig 2 Main body 3 Actuating part 3a Tip part 4 Hook part 4a Central part 4b Engaging part 4c Slope 4d Upper surface 4e Lower surface 5 Connecting part 6 Pin 7 Direction support part 8 Marker M Magnet 10 Tensioning member 11 First member 11a First wire receiving portion 11b First through hole 12 Second member 12a Second wire receiving portion 12b Second through hole 13 Lock pin 14 Plate W Wire (hanging means, cable)
Wa end 50, 50A, 50B, 50C, 50D ALC floor plate (object)
51 through hole 52 stepped portion 53 gap H beam

Claims (7)

A long hanging jig used for hanging a plurality of objects using through holes formed in the objects,
a body portion provided with a connection portion connected to a suspension means on the base end side of the elongated suspension jig;
a hook portion rotatably attached to the distal end side opposite to the proximal end side of the main body;
an actuating portion attached to the outside of the body portion coaxially with the body portion,
the operating portion is slidable with respect to the body portion between the base end side and the distal end side of the body portion;
When the operating portion retreats to the base end side of the main body, the hook rotates due to its own weight to be in a first state in which it is coaxial with the main body, so that the hook moves toward the object. can be inserted into the through-hole of
When the operating portion advances to the distal end side of the main body portion, the hooking portion is rotated by the operating portion to enter a second state in which it intersects with the main body portion, whereby the hooking portion extends from the through hole. prevented from exiting
The hook portion is formed in a planar shape by notching a lower portion in the second state ,
The hanging jig , wherein the hook is provided with a magnet that generates an attractive force with respect to the main body at a position above the hook that faces the main body in the first state . A long hanging jig used for hanging a plurality of objects using through holes formed in the objects,
a body portion provided with a connection portion connected to a suspension means on the base end side of the elongated suspension jig;
a hook portion rotatably attached to the distal end side opposite to the proximal end side of the main body;
an actuating portion attached to the outside of the body portion coaxially with the body portion,
the operating portion is slidable with respect to the body portion between the base end side and the distal end side of the body portion;
When the operating portion retreats to the base end side of the body portion, the hook portion rotates by its own weight and becomes a first state in which it is coaxial with the body portion, so that the hook portion moves toward the object. can be inserted into the through-hole of
When the operating portion advances to the distal end side of the main body portion, the hooking portion is rotated by the operating portion to enter a second state in which it intersects with the main body portion, whereby the hooking portion extends from the through hole. prevented from exiting
The hook portion is formed in a planar shape by notching a lower portion in the second state,
A hanging jig, wherein the operating portion is formed with a plurality of markers spaced apart at predetermined intervals in the longitudinal direction. 3. The hanging jig according to claim 1, wherein a direction support portion is formed on the base end side of the body portion to indicate a direction parallel to the hook portion in the second state. equipment. 3. The hooking portion according to claim 2 , wherein the hooking portion is provided with a magnet that generates an attractive force with respect to the body portion at a position above the hooking portion facing the body portion in the first state. hanging jig. 2. The hoisting jig according to claim 1, wherein a plurality of markers are formed at predetermined intervals in the longitudinal direction of the operating portion. A rope using at least two hanging jigs according to any one of claims 1 to 5 and connected to the connection portion of the hanging jig;
and a tensioning member disposed between adjacent said ropes for maintaining the ends of said adjacent ropes at a predetermined distance from each other. A floor construction method using the hanging jig according to any one of claims 1 to 5 ,
a preparation step of stacking and arranging floorboards having stepped portions formed at both ends in the longitudinal direction of a long floorboard and through holes formed in the stepped portions in a plurality of stages so that the through holes are aligned; ,
an inserting step of inserting the hanging jig through the through-holes of the plurality of floorboards in a state where the hook portion is on the same axis as the main body portion;
a first construction step of rotating the hooking portion in the gap formed by the stepped portion to engage with the lower surface of the floorboard to support the plurality of floorboards;
a second construction step of raising the hanging jig to transport and arrange the floorboard at a predetermined position;
a third construction step of pulling up the hanging jig in a state in which the hook portion is coaxial with the main body portion, and removing the bottom floorboard from the plurality of stacked floorboards;
a fourth construction step of moving the remaining stacked floorboards to a position adjacent to the floorboards removed in the third construction step;
Repeating the second construction step to the fourth construction step to form a floor surface by arranging the floorboards,
Further, a method for constructing a floor, wherein the above steps are repeated to construct the floor at the floor forming position.

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