JP2020055655A - Hanging jig, hanging unit and floor construction method - Google Patents

Abstract

To provide a hanging jig capable of simultaneously hanging multiple objects and of easily working to install the multiple objects in their respective desired positions.SOLUTION: A hanging jig 1 in an elongated shape comprises: a body part 2 having a connecting part 5 connected to hanging means W on a base end side of the hanging jig 1; a hooking part 4 attached rotatably to a tip side opposite to the base side; and an operation part 3 coaxially attached to the body part 2 outside the body part 2. The operation part 3 can slide between the base end side and the tip side with respect to the body part 2. When the operation part 3 retracts to the base end side, the hooking part 4 is rotated by its own weight to come into a first state of being aligned coaxially with the body part 2, so as to allow the hooking part 4 to be inserted into a through hole 51 of an object 50. When the operation part 3 advances to the tip side, the hooking part 4 is rotated by the operation part 3 to come into a second state of intersecting the body part 2 so as to prevent the hooking part 4 from coming out of the through hole 51. The hooking part 4 is formed in a planar shape in which a part 4e to be positioned on a lower side in the second state, is cut off.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a suspending jig for suspending an object, a suspending unit, and a method of constructing a floor, and in particular, using a suspending jig, a suspending unit, and a suspending jig used to suspend a plurality of objects simultaneously. The present invention relates to a floor construction method.

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

  Patent Literature 1 discloses a suspension jig used for suspending an object using a hole provided in the object, the suspension jig including a main body including a shaft, a hook portion, and an operating portion. It is described that an ALC floor plate to be suspended is installed between beams using a tool.

  Specifically, the hanging jig of Patent Literature 1 includes a main body provided with a connecting portion connected to the hanging jig on a base end side, and a hook portion rotatably attached to a distal end of the main body. And an operating portion slidably attached to the main body portion, and in a retracted position in which the operating portion is retracted to the base end side, the hook portion rotates by its own weight and becomes coaxial with the main body portion. In the first state, the hooking portion can be inserted into the hole of the ALC floor plate, which is the object, and at the advanced position where the operating portion has advanced to the distal end side, the hooking portion is rotated by the operating portion and the main body is rotated. When the second state intersects the portion, the hook portion is configured to be prevented from falling out of the hole of the ALC floor plate as the object.

  Further, Patent Document 2 discloses a process of arranging a plurality of plate-like members such as PC floor boards having through holes formed therein in a horizontally stacked state while maintaining a vertical interval, and arranging the through holes in a row. The step of inserting a hanging jig (suspension metal fitting) into the inside, and the hook part (cotter) at the lower end of the hanging jig is developed horizontally to raise the plate member to convey the plate member to a predetermined position. A method of transporting a horizontally stacked plate member, which includes a step of folding a hook portion, raising a suspension jig, and separating from the plate member, is described.

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

  Although the suspending jig described in Patent Document 1 has a simple structure, it can only suspend one object, specifically, one floor plate, and cannot suspend a plurality of objects at the same time. Floor plates could not be installed between beams continuously from a state in which a plurality of floor plates were suspended.

  Further, in the technology described in Patent Document 2, a link mechanism, a hydraulic cylinder, and the like are required as a mechanism for rotating and folding the hook portion, and the structure is complicated.

  As described above, it is an issue to improve the workability of the work of lifting a plurality of objects at the same time and installing the plurality of objects at target positions, respectively, while using a jig having a simple configuration.

  The present invention has been made in view of the above problems, and its object is to be able to lift a plurality of objects at the same time, and to install a plurality of objects at respective target positions. Another object of the present invention is to provide a hanging jig having a simple structure.

  According to the hanging jig of the present invention, the object is a long hanging jig used to suspend a plurality of objects by using a through hole formed in the object, A main body portion provided with a connecting portion connected to suspending means on a base end side of the hanging jig, and a hook portion rotatably attached to a distal end side of the main body portion opposite to the base end side. And an operating portion attached to the outside of the main body portion and coaxially with the main body portion, wherein the operating portion is provided between the base end side and the distal end side of the main body portion with respect to the main body portion. When the operating portion is retracted to the base end side of the main body portion, the hook portion is rotated by its own weight to be in the first state on the same axis as the main body portion, The hook portion can be inserted into the through hole of the object, and the operating portion is located on the tip side of the main body. When the hooking portion advances, the hooking portion is rotated by the operating portion to be in the second state crossing the main body portion, so that the hooking portion is prevented from falling out of the through hole, and the hooking portion is The problem is solved by the fact that the lower portion in the second state is cut out and formed in a planar shape.

  In the hanging jig of the present invention configured as described above, in the second state in which the hook portion is rotated, the lower portion is formed by being cut out in a plane, so that the hook portion has its own weight. When returning to the first state, the hook portion is likely to be coaxial with the main body portion. Therefore, according to the hanging jig of the present invention, a plurality of objects can be lifted at the same time with a simple configuration, and the plurality of objects can be respectively installed at target positions. Furthermore, when the hanging jig is pulled out from the object, the hook provided at the tip of the hanging jig is prevented from being unintentionally hooked on the object.

Further, in the above configuration, a direction support portion that indicates a direction parallel to the hook portion in the second state may be formed on the base end side of the main body portion.
In the above configuration, even when the hook portion cannot be directly viewed, for example, when the hook portion is disposed between the objects, the direction of the hook portion can be determined on the base end side.

Further, in the above configuration, it is preferable that the hook portion includes a magnet that generates an attractive force with respect to the main body portion at a position facing the main body portion above the hook portion in the first state.
In the above configuration, since the suction force is generated such that the hook portion has the same axis as the main body portion in the first state, the return from the second state to the first state is promoted.

Further, in the above configuration, it is preferable that the operating portion is formed with a plurality of markers that are separated by a predetermined distance in the longitudinal direction.
In the above configuration, since the operating portion has a plurality of markers in the longitudinal direction, when the hanging jig is inserted into each hole of the plurality of objects, the operating portion of the hanging jig is applied to the plurality of objects. It is possible to visually recognize which position is located.

In addition, according to the hanging unit of the present invention, the object is to use at least two of the above-described hanging jigs, and to connect a rope connected to the connecting portion of the hanging jig with the adjacent rope. A tensioning member that is arranged and maintains the ends of the adjacent ropes at a predetermined distance from each other.
According to the hanging unit of the present invention configured as described above, when performing one-point hanging, the ropes connected to the connecting portion on the base end side of the hanging jig are inclined in a direction approaching each other, The hanging jig may bend. By maintaining the ends of the adjacent ropes at a predetermined distance from each other by the tension member, it is possible to prevent a force from being applied to the suspension jig at the end of the rope, so that the suspension jig is bent. Deformation is suppressed.

Further, according to the floor construction method of the present invention, the problem is that a floor plate including a step portion formed at both ends in the longitudinal direction of the long floor plate and a through hole formed in the step portion, A preparatory step of overlapping and aligning the through holes in a plurality of stages, and inserting the suspending jig through the through holes of the plurality of floor plates in a state where the hook portion is coaxial with the main body portion. And a first construction step of rotating the hook portion in the gap formed by the step portion and engaging the lower surface of the floor plate to support the plurality of floor plates, and raising the suspending jig. A second construction step of transporting and arranging the floorboard to a predetermined position, and setting the hook portion to be in the same axis as the main body, pulling up the suspending jig, and stacking a plurality of lowermost floorboards by stacking; A third construction step of detaching; A fourth construction step of moving the remaining stacked floor boards to a position adjacent to the floor boards detached in the construction process, and the fourth construction step is repeated from the second construction step to arrange the floor boards. And a step of forming a floor surface by performing the above steps, and further, by repeatedly performing the above-described steps to construct the floor surface at the floor surface forming position.
In the above configuration, a plurality of floorboards can be continuously arranged at a predetermined position, and the floor can be efficiently constructed.

ADVANTAGE OF THE INVENTION According to the hanging jig which concerns on this invention, it becomes possible to raise a several object simultaneously and to improve the workability of the operation | work which installs a several object in the target position each.
According to the hanging unit of the present invention, even when the object is hung at one point, the tension members maintain the ends of the adjacent ropes separated from each other by a predetermined distance. The hanging jig is prevented from being bent and deformed.
Further, according to the floor construction method of the present invention, it is possible to continuously arrange a plurality of floor boards at a predetermined position, and it is possible to construct a floor efficiently.

It is the (a) front view and (b) side view of the hanging jig concerning one embodiment of the present invention. It is the (a) front view and the (b) side view which expanded the composition of the base end side of the hanging jig concerning one embodiment of the present invention. It is the (a) front view and the (b) side view which expanded the composition of the tip side of the hanging jig concerning one embodiment of the present invention. It is a typical explanatory view showing movement of a hook part of a hanging jig concerning one embodiment of the present invention. It is (a) front view and (b) top view of the tension member used with the hanging jig which concerns on one Embodiment of this invention. FIG. 6 is a cross-sectional view taken along line AA of FIG. 5, illustrating a lock mechanism provided in the tension member. It is a figure showing the mode of use of the hanging jig concerning one embodiment of the present invention, and is a figure showing the state where four ALC floor boards were hung. It is a figure which shows the state which installed the ALC floor board which is a suspended object between beams. It is a figure which shows the construction procedure of the ALC floorboard using the hanging jig which concerns on one Embodiment of this invention, and is a schematic cross section which shows the state which lifts four ALC floorboards. It is a figure showing the construction procedure of the ALC floor board using the hanging jig concerning one embodiment of the present invention, and is a typical sectional view showing the state where the hanging jig was pulled out from the lowest ALC floor board. It is a figure showing the construction procedure of the ALC floor board using the hanging jig concerning one embodiment of the present invention, and is a typical sectional view showing the state where the ALC floor board was installed between beams. It is a figure showing the construction procedure of the ALC floor board using the hanging jig concerning one embodiment of the present invention, and is a typical sectional view showing the state at the time of pulling out the hanging jig from the last ALC floor board.

  Hereinafter, a configuration of a suspension jig according to an embodiment of the present invention (hereinafter, this embodiment) will be described with reference to FIGS. 1 to 12. FIG. 1 is a (a) front view and (b) a side view of a hanging jig according to the present embodiment. 2A and 2B are an enlarged front view and a side view of the configuration of the hanging jig according to the present embodiment, respectively, and FIG. 3 is a front view of the hanging jig according to the present embodiment. 3A is an enlarged front view and FIG. FIG. 4 is a schematic explanatory view showing the movement of the hooking part of the hanging jig according to the present embodiment. FIG. 5 is a (a) front view and (b) a top view of a tension member used with the hanging jig according to the present embodiment. FIG. 6 is a cross-sectional view taken along the line AA of FIG. 5 and is a view for explaining a lock mechanism included in the tension member. FIG. 7 is a diagram illustrating a use mode of the hanging jig according to the present embodiment, and FIG. 8 is a diagram illustrating a state in which an ALC floor plate to be suspended is installed between beams. FIG. 9 to FIG. 12 are schematic cross-sectional views showing the procedure for constructing the ALC floorboard using the hanging jig according to the present embodiment. In each of the drawings, the front-rear direction, the vertical direction, and the width direction of the hanging jig are illustrated by arrows.

<Hanging jig 1>
First, the use, material, shape, and the like of the hanging jig 1 according to the present embodiment will be described.
The elongate hanging jig 1 (hereinafter simply referred to as a “suspension jig 1”) according to the present embodiment is used for hanging a plurality of objects using a through hole formed in the object. is there. As shown in FIG. 1, a suspension jig 1 includes a main body 2 provided with a connecting portion 5 connected to a suspending means (hereinafter also referred to as a wire W, a cord) on a base end side, and a main body 2. A main part includes a hook part 4 rotatably attached to a distal end part opposite to the base end side, and an operating part 3 mounted on the same axis as the main body part 2 outside the main body part 2. I have. The hanging jig 1 is preferably formed of metal from the viewpoint of strength and durability.

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

(Working part 3)
As shown in FIG. 2, the operating portion 3 is formed of a tubular body having a circular cross section larger than the cross-sectional shape of the main body 2, and when the main body 2 is inserted into the operating portion 3, the operating portion 3 is Is slidably attached to the main body 2 between the base end side and the front end side.

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

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

  The attachment of the hanging jig 1 to the object to be suspended is performed as follows. As shown in FIG. 3A, in a state in which the operating portion 3 is lifted to the proximal end side (retracted state), the main body 2 movably inserted into the operating portion 3 is moved by its own weight. To move downward. In the first state (released state), the hook 4 pivotally attached to the end of the main body 2 by the pin 6 so as to be rotatable is rotated by its own weight so that the central portion 4a is on the lower side (front end side). To rotate. That is, since the center of gravity is closer to the center 4 a than the mounting position of the pin 6, the hook 4 rotates about the pin 6. In the first state (released state), the main body 2 and the hook 4 have the same axis, so that the hanging jig 1 can be inserted into a through hole provided in the object to be hung.

  When the hand holding the operating unit 3 is again held on the main unit 2 or the connecting unit 5 in a state where the hooking unit 4 has passed through the through-hole of the object to be suspended, the operating unit 3 has its own weight as shown in FIG. As a result, the slope 4 c provided at the end of the hook 4 is urged toward the tip 3 a of the operating section 3, so that the hook 4 rotates around the pin 6. Move.

  As shown in FIG. 4, in the second state (fixed state) in which the operating unit 3 is completely lowered, the hooking unit 4 is substantially horizontal (in other words, the hooking unit 4 is connected to the main body 2 and the operating unit 3). Axes are orthogonal to each other). In the second state (fixed state), the hook portion 4 is prevented from falling out of the through-hole, so that the wire W (corrugation) as a suspending means is connected to the ring-shaped connecting portion 5 of the suspending jig 1. Then, an object such as an ALC floor plate can be lifted by a crane or the like.

  Here, the suspending jig 1 is used to suspend a plurality of objects, for example, floorboards in a state of being stacked in a plurality of layers in a horizontally stacked state. As described later, a gap (space) between the floorboards is used. ), It is necessary to rotate the hook portion 4. Therefore, when the length of the central portion 4a of the hook portion 4 is long, the hook portion interferes with the floor plate and cannot rotate, so that it is necessary to reduce the length of the central portion 4a. However, when the central portion 4a is shortened, the rotation force is weakened by its own weight, so that the hook portion 4 may be slightly inclined with respect to the main body portion 2. In order to solve such a problem, the hook 4 of the hanging jig 1 is designed to be coaxial with the main body 2 as described below.

  Specifically, as shown in FIGS. 3 and 4, in the second state (fixed state) in which the hook portion 4 is rotated, the lower portion, that is, the lower surface 4 e is formed by being cut out in a plane. I have. According to such a configuration, the center of gravity of the central portion 4a is located closer to the upper surface 4d than to the lower surface 4e. Therefore, when the hook 4 returns to the first state (released state, FIG. 3) by its own weight in the second state (fixed state, FIG. 4), the hook 4 tends to be coaxial with the main body 2. Therefore, when the hanging jig 1 is pulled out from the object, it is possible to prevent the hook 4 provided at the tip of the hanging jig 1 from being unintentionally hooked on the hanging object.

  Further, as shown in FIG. 3, the hook 4 includes a magnet M. Specifically, the magnet M is configured to generate an attractive force in the first state (released state, FIG. 3) such that the hook 4 is coaxial with the main body 2. Specifically, the hook 4 includes a magnet M that generates an attractive force on the main body 2 at a position facing the main body 2 above the hook 4 in the first state (released state, FIG. 3). I have. Since the magnet M is arranged so as to generate an attractive force so that the hook portion 4 has the same axis as the main body portion 2, the magnet M is shifted from the second state (fixed state, FIG. 4) to the first state (released state, FIG. 3). ) Is promoted. Therefore, when the hanging jig 1 is pulled out from the object, it is possible to prevent the hook 4 provided at the tip of the hanging jig 1 from being unintentionally hooked on the hanging object.

(Direction indicator 7)
As shown in FIGS. 1 and 2, a direction indicating portion 7 for indicating a direction parallel to the hook portion 4 in the second state is formed on the base end side of the main body 2. Even when the hook 4 is not directly visible, such as when the hook 4 on the distal end is placed between the objects to be hung, the direction of the hook 4 is determined by the presence of the direction indicator 7 on the base end. Can be determined on the base end side (hand side).

(Marker 8)
As shown in FIG. 1, a plurality of markers 8 are formed on the operating section 3 at predetermined intervals in the longitudinal direction. Since the operating unit 3 includes the plurality of markers 8 in the longitudinal direction, when the hanging jig 1 is inserted into each hole of the plurality of objects, the operating unit 3 is located at any position with respect to the plurality of objects. Can be visually grasped. Specifically, as shown in FIG. 9, each marker 8 is formed such that each marker 8 is located on the upper surface of each object when the hanging jig 1 hangs the object. In other words, the distance between the markers 8 adjacent to each other in the longitudinal direction of the operation unit 3 is substantially equal to the distance between the upper surface and the lowermost surface of the object (for example, an ALC floor plate 50 described later) (that is, the maximum thickness of the object). It is formed to match.

<Tension member 10>
FIG. 5 shows a tension member 10 used in combination with the suspending jig 1 and a cord (for example, a wire W). The suspending jig 1 and the tension member 10 constitute a suspending unit in the present embodiment. As will be described later, the tension members 10 are arranged between the ropes connected to the adjacent hanging jigs 1, and move the ends of the adjacent ropes (the ends Wa of the wires W to be described later) a predetermined distance from each other. This is for maintaining the separated state.

  The tension member 10 has a first member 11 having a first wire receiving portion 11a at one end thereof, and a slidably provided outside of the first member 11 at the other end opposite to the first wire receiving portion 11a. And a second member having a second wire receiving portion 12a. As shown in FIGS. 5 and 6, the first member 11 has a plurality of first through holes 11b formed in the longitudinal direction thereof, and the second member 20 has a plurality of second through holes 11 formed in the longitudinal direction thereof. A hole 12b is formed. The first member 11 and the second member 20 are in a state in which the first member 11 and the second member 20 cannot slide with each other by inserting the lock pin 13 constituting the lock mechanism into the first through hole 11b and the second through hole 12b. It is locked (FIG. 6A).

  A plate 14 is attached to a lower portion of the lock pin. 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 releasing the lock, the lock between the first member 11 and the second member 20 is released. When the lock is released, 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 inserted in a state where the tension member 10 has a desired length. Are locked so that they cannot slide with each other. In this manner, by making the length of the tension member 10 adjustable in the longitudinal direction, it is possible to adjust the distance by which the tension member 10 separates the ends of the adjacent cords from each other. The tension member 10 can be applied to an object having a size.

  FIG. 7: is a figure which shows the use aspect of the hanging jig 1, the tension member 10, and the wire W as a rope, and the state which suspended four ALC floor boards 50A-50D by a crane not shown at one point. Is shown. As described above, when performing the one-point hanging, the hanging jig 1 may be bent by inclining the wires W connected to the connecting portion 5 on the base end side of the hanging jig 1 so as to approach each other. There is. Here, the tension members 10 keep the ends Wa of the adjacent wires W apart from each other by a predetermined distance (that is, the distance between two adjacent hanging jigs 1), and at the ends Wa of the wires W Since a force is prevented from being applied to the hanging jig 1 (specifically, the connecting portion 5 of the hanging jig 1), the hanging jig 1 is suppressed from being bent and deformed.

<Construction method of floor using hanging jig 1>
Next, a method of constructing a floor using the hanging jig 1 will be described with reference to FIGS. Hereinafter, an example in which the object to be suspended is the ALC floor plate 50 (plate-like member) having a step on the lower surface will be described. Here, ALC is an abbreviation for Autoclave Lightweight Concrete, and is also called lightweight cellular concrete. Generally, an ALC floorboard is a building flooring material in which lightweight cellular concrete having a myriad of cells is formed into a predetermined panel shape, and reinforcing steel is buried therein. ALC floorboards are known for being able to easily construct a first floor or a second floor excellent in sound insulation, heat insulation, creaking resistance and the like.

  FIG. 8 is a diagram showing a state in which an ALC floor plate to be suspended is installed between beams. As shown in FIG. 8, when installing the ALC floor boards 50 on the plurality of beams H arranged side by side, the plurality of ALC floor boards 50 are simultaneously suspended, and the ALC floor boards 50 are sequentially installed one by one from the lower ALC floor board 50. It is efficient.

(Preparation process)
As shown in FIG. 9, in the preparation step, the ALC floor boards 50 are arranged in a four-tiered state in a horizontal stacking state, and the respective through holes 51 are aligned in tandem. The long ALC floor plate 50 has a step 52 on the lower surface at both ends in the longitudinal direction, and a through hole 51 is formed in the step 52. Then, as shown in FIG. 9, a gap 53 is formed by the step portion 52. In addition, the through-hole 51 is a hole used when the ALC floor panel 50 is attached to a building frame.

(Insertion process)
Next, in the insertion step, the hanging jig 1 is attached to the four ALC floor boards 50 that are stacked. Specifically, the hanging jig 1 is inserted into the through-holes 51 of the plurality of ALC floor boards 50 in a state where the hook 4 is coaxial with the main body 2 (first state). Specifically, as shown in FIG. 1, the operating section 3 is lifted by hand, and the main body 2 is moved downward by its own weight to be in the first state (released state). In the first state (released state), since the main body 2 and the hooking part 4 have the same axis, as shown in FIG. 9, the hanging jig 1 is inserted into the through hole 51 provided in the ALC floor plate 50 to be hung. Can be penetrated.

(First construction process)
Next, in the first construction step, the hook portion 4 is rotated in the gap 53 formed by the step portion 52, and is engaged with the lower surface of the lowermost ALC floor plate 50A to support the four ALC floor plates 50. Specifically, as shown in FIG. 9, in a state where the hook portion 4 has passed through the through holes 51 of all the ALC floor boards 50, the hand holding the operating portion 3 is returned to the main body portion 2 or the connecting portion 5. Then, the operating part 3 is lowered by its own weight, and the hook part 4 is rotated about the pin 6. As shown in FIG. 4, in the second state (fixed state) in which the operating section 3 is completely lowered, the hooking section 4 is substantially horizontal, and the lower surface of the lowermost ALC floor panel 50A near the step 52 has an upper surface 4d. Abuts. In this second state (fixed state), by connecting the end Wa of the wire W as a suspending means to the ring-shaped connecting portion 5 of the suspending jig 1, the suspending jig 1 is supported by a crane or the like. Four ALC floor boards 50 can be lifted simultaneously. Thus, the hook 4 of the suspension jig 1 is rotatable in the gap 53 formed by the step 52. As shown in FIG. 9, since the distance between the adjacent markers 8 is formed so as to substantially match the maximum thickness of the ALC floor panel 50, each marker 8 is located on the upper surface of each of the ALC floor panels 50A to 50D. become.

(2nd construction process)
Next, in the second construction step, the ALC floor plate 50 is transported and arranged at a predetermined position with the hanging jig 1 raised. Specifically, the lifting jig 1 is raised from the state shown in FIG. 9, the ALC floor plate 50 is transported onto the beam H, and the first (lowest) ALC floor plate 50A is placed on the beam H. I do.

(3rd construction process)
Next, in the third construction step, the hanging jig 1 is pulled up and separated from the ALC floor plate 50A at the lowermost stage, with the hook portion 4 having the same axis as the main body portion 2 (first state). Specifically, when the wire W (not shown) is lowered in a state where the ALC floor panel 50A is disposed on the beam H, the hanging jig 1 is lowered by its own weight in the second state (fixed state). Thereafter, when the operating portion 3 is lifted, the operating portion 3 moves upward with respect to the main body portion 2, so that the hook portion 4 rotates about the pin 6 by its own weight as the second state (fixed state) is released. Then, in the first state (the released state) in which the operating section 3 is retracted to the base end side, the main body section 2 and the hook section 4 are coaxial.

  In this state, the hanging jig 1 is pulled up and detached from the ALC floor plate 50A at the lowermost stage, and the hook portion 4 is arranged in the gap 53 between the ALC floor plate 50A and the ALC floor plate 50B. At this time, the position of the hook 4 can be estimated by visually checking the marker 8. In the gap 53 between the ALC floor plate 50A and the ALC floor plate 50B, the operating portion 3 is operated to set the hook portion 4 to the second state (fixed state) in which the hook portion 4 is rotated substantially horizontally. By directly lifting the hanging jig 1 upward, the hook portion 4 abuts on the lower surface of the second ALC floor plate 50B, and the three ALC floor plates 50B to 50D are lifted.

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

  Then, the second construction step to the fourth construction step are repeatedly performed, and the second ALC floor plate 50B is arranged on the beam H (FIG. 11). Then, the hook 4 of the hanging jig 1 is arranged in the gap 53 between the ALC floor plate 50B and the ALC floor plate 50C. Thereafter, by repeating the same procedure, the ALC floor plate 50C and the ALC floor plate 50D are arranged on the beam H.

  As described above, the work of suspending the plurality of ALC floor boards 50 simultaneously and installing them on the beam H one by one sequentially from the lower ALC floor board 50 is performed. As described above, the floor is constructed by repeating the above steps to construct the floor at the floor-forming position.

  The hook portion 4 can be rotated in a space between adjacent objects (for example, a gap 53 between the ALC floor plate 50A and the ALC floor plate 50B) while being inserted into the through hole 51 of the ALC floor plate 50. Since it is possible, it is possible to easily perform the work of successively installing a plurality of ALC floor boards 50 at target positions.

<Modification>
The configuration of the hanging jig 1 according to an embodiment of the present invention has been described above, but the above embodiment is merely an example for facilitating understanding of the present invention, and limits the present invention. Not something. That is, the present invention can be changed and improved without departing from the spirit thereof, and the present invention naturally includes equivalents thereof.

  In particular, the structure, material, shape, dimensions, and the like of the hanging jig 1 are not limited to the contents described in the above embodiment, and can be arbitrarily designed without departing from the gist of the present invention. is there.

  Further, there is no particular limitation on the specific form of the main body 2, the operating portion 3, the hook portion 4, the connecting portion 5, etc., and the cross-sectional shape of the main body 2 or the operating portion 3 may be square. In the above embodiment, the case in which the object to be suspended is the ALC floor panel 50 is shown. However, the present invention is not limited to this, and various types of objects to be suspended, such as a floor panel such as a PC floor panel and a plate member provided with through holes, may be used. There may be.

DESCRIPTION OF SYMBOLS 1 Suspension jig 2 Main part 3 Working 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 Tension member 11 First member 11a 1st wire receiving part 11b 1st through-hole 12 2nd member 12a 2nd wire receiving part 12b 2nd through-hole 13 Lock pin 14 Plate W Wire (hanging means, cable)
Wa end 50, 50A, 50B, 50C, 50D ALC floorboard (object)
51 through hole 52 step 53 gap H beam

Claims (6)

A long hanging jig used to suspend a plurality of the objects using a through hole formed in the object,
A main body portion provided with a connecting portion connected to a suspending means on a base end side of the elongated suspending jig,
A hook portion rotatably attached to a distal end side of the main body portion opposite to the base end side,
An operating portion attached to the outside of the main body portion and coaxially with the main body portion,
The operating portion is slidable with respect to the main body portion between the base end side and the distal end side of the main body portion,
When the operating portion is retracted to the base end side of the main body portion, the hooking portion is rotated by its own weight to be in the first state in which the main body portion is coaxial with the hooking portion. Can be inserted into the through hole of
When the operating portion advances to the distal end side of the main body portion, the hook portion is rotated by the operating portion to be in a second state crossing the main body portion, so that the hook portion is moved from the through hole. Is prevented from exiting,
The hanging jig is characterized in that the hook portion is formed in a flat shape by cutting out a lower portion in the second state.   2. The hanging jig according to claim 1, wherein a direction support portion that indicates a direction parallel to the hook portion in the second state is formed on the base end side of the main body portion. 3.   The said hook part is provided with the magnet which produces | generates an attraction force with respect to the said main-body part in the position which opposes the said main-body part above the said hook part in the said 1st state, The said Claim 1 or 2 characterized by the above-mentioned. The hanging jig described in.   The hanging jig according to any one of claims 1 to 3, wherein the operating portion is formed with a plurality of markers separated by a predetermined distance in a longitudinal direction. A cable connected to the connecting portion of the hanging jig using at least two hanging jigs according to any one of claims 1 to 4,
A tensioning member disposed between the adjacent ropes and a tension member for maintaining ends of the 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 4,
A step of preparing a floor plate having a step formed at both ends in the longitudinal direction of a long floor plate and through holes formed in the step, stacking a plurality of steps so as to align the through holes, and ,
An insertion step of inserting the hanging jig into the through holes of the plurality of floorboards in a state where the hook portion is coaxial with the main body portion,
A first construction step of rotating the hook portion in a gap formed by the step portion and engaging a lower surface of the floor plate to support a plurality of the floor plates;
A second construction step of raising the suspending jig and transporting and disposing the floorboard to a predetermined position;
A third construction step in which the hook portion is coaxial with the main body portion, the lifting jig is pulled up, and the lowermost floor plate of a plurality of stacked layers is detached,
A fourth construction step of moving the remaining stacked floor boards to an adjacent position of the floor boards detached in the third construction step,
Repeating the fourth construction step from the second construction step, arranging the floorboard and forming a floor surface,
Further, a floor construction method characterized by repeating the above steps in order to construct a floor surface at a floor surface formation position.

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