Suspension bracket detachment jig and suspension bracket detachment method

Abstract

To provide a metal fitting removing tool capable of easily removing a hanging metal fitting from a construction member.SOLUTION: This fitting removing tool 1 is used for removing a hanging fitting T for hanging a construction member P of a building from the construction member P, and releases an engaging lock part T3 of the hanging fitting T engaged with the construction member P from the side. The metal fitting removing tool 1 includes a first removing member 10 extending in a long length, and a second removing member 20 connected to the first removing member 10 in a relatively movable manner and extending in a long length. A tip part 10a of the first removing member 10 abuts on an engagement lock part T3 of the suspension fitting T, and is formed thinner than a base end part 10b of the first removing member 10. A tip end 20a of the second removing member 20 abuts on a fitting body T1 of the hanging fitting T, and is formed thinner than a base end 20b of the second removing member 20.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a hanging hardware removal jig and a hanging hardware removal method, and more particularly to a hanging hardware removal jig and a hanging hardware removal method used to remove a hanging hardware that lifts a construction member of a building from the construction member. [Background technology]

[0002] To attach a construction member (such as an exterior wall panel) to a building, first a hanging bracket is attached to the upper end of the construction member, and the construction member is then lifted up by a crane via the hanging bracket.The construction member is then lowered to a position near the building frame (such as a beam or pillar) where the construction member will be attached, and the lower end of the construction member is bolted to the frame, and the hanging bracket is then removed from the construction member.

[0003] For example, Patent Document 1 discloses a hanging fitting that can be easily attached to and detached from a construction member by one-side access. The hanging fitting has a shaft that engages with a hole in the construction member and a retaining member (engagement lock) that prevents the shaft from coming out of the hole. A worker can remove the hanging fitting from the construction member by manually pulling up the retaining member to release the engagement with the construction member, and then removing the hanging fitting from the construction member in the released state. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2007-238219 Summary of the Invention [Problem to be solved by the invention]

[0005] Typically, a worker reaches out from inside the building to operate the hanging hardware of a construction member that is suspended on the outdoor side of the building, and removes the hanging hardware from the construction member. However, when removing the hanging hardware from the construction member with its lower end fixed to the frame, it is difficult for the worker to reach the hanging hardware, which can reduce workability. In particular, when the gap between the upper end of the construction member and the frame above the construction member is narrow, it is difficult for the worker to reach the gap, which can make it difficult to remove the hanging hardware.

[0006] The present invention has been made in consideration of the above-mentioned problems, and an object of the present invention is to provide a hanging hardware removal jig and a hanging hardware removal method that can easily remove a hanging hardware from a construction member. [Means for solving the problem]

[0007] The above problem is solved by the hanging hardware removal jig of the present invention, which is used to remove a hanging hardware that hoists a construction member of a building from the construction member, and which releases the engagement lock portion of the hanging hardware that engages with the construction member from the side, and which comprises a first removal member that extends long, and a second removal member that is connected to the first removal member so that it can move relative to the first removal member, and whose tip end abuts the engagement lock portion of the hanging hardware and is formed thinner than the base end of the first removal member, and whose tip end abuts the hardware body of the hanging hardware and is formed thinner than the base end of the second removal member.

[0008] With the above configuration, the long jig with a thin tip allows easy access to the hanging hardware from the side, even in hard-to-reach places. Furthermore, the first detachment member can be used to release the engagement between the installation member and the hanging hardware, and the second detachment member can be used to remove the hanging hardware from the installation member, improving workability. Therefore, the hanging hardware can be easily removed from the construction member.

[0009] In this case, the second removal member extends in the same direction as the first removal member and is rotatably connected to the first removal member, and the hanging hardware removal jig is used to remove the hanging hardware that engages with the construction member suspended on the outdoor side of the building from the indoor side of the building, and with the tip of the first removal member abutting against the engagement lock portion of the hanging hardware to release the engagement lock portion, the second removal member rotates relative to the first removal member, and the tip of the second removal member abuts against the hardware body of the hanging hardware, thereby removing the hanging hardware from the construction member. With this configuration, even if the gap between the construction member and the building frame is narrow, the hanging hardware on the outdoor side of the building can be easily accessed from the indoor side. In addition, because the second detachment member rotates relative to the first detachment member, the hanging hardware can be easily detached from the construction member even in a narrow space.

[0010] In this case, the first removal member and the second removal member may be connected to each other by a connecting member extending in a width direction of the first removal member and the second removal member, the first removal member having a first abutment portion provided at a tip end of the first removal member and a first extending portion connected to the first abutment portion and extending longitudinally from the first abutment portion toward the base end of the first removal member, the second removal member having a second abutment portion provided at a tip end of the second removal member and a second extending portion connected to the second abutment portion and extending longitudinally from the second abutment portion toward the base end of the second removal member, the connecting member connecting the first removal member and the second removal member such that the first extending portion and the second extending portion are aligned in the width direction, and the first abutment portion has an overlapping portion that overlaps the second abutment portion in a vertical direction. With this configuration, the first and second contact portions are arranged to overlap, allowing the removal operation to be performed near the hanging hardware, making it even easier to operate the engagement lock portion.

[0011] In this case, a long hole is formed in the first extension portion or the second extension portion, penetrating in the width direction and extending in the extension direction of the first extension portion and the second extension portion, the connecting member is inserted into the long hole and connects the first removal member and the second removal member so that the first extension portion and the second extension portion are aligned in the width direction, and the second removal member is movable relative to the first removal member in the extension direction by the connecting member moving within the long hole. With the above configuration, the two removal tools can be easily carried because they are connected by the connecting member. Furthermore, the two removal tools can be moved relative to each other in the extension direction due to the long holes while connected, improving workability.

[0012] In this case, the connecting member is preferably formed to be longer than the widthwise lengths of the first extension portion and the second extension portion, and the second removal member is preferably movable relative to the first removal member in the widthwise direction. With the above-described configuration, the two removal jigs can be moved relatively in the width direction by the connecting member formed long, which further improves workability.

[0013] In this case, the first abutment portion has a tapered surface that becomes thinner from the base end side toward the tip end side of the first removal member, and a recess that is recessed in the thickness direction is formed on the tapered surface of the first abutment portion, and the recess abuts against the engagement lock portion of the hanging hardware from the thickness direction. With the above configuration, the recessed portion increases the contact surface with the engagement lock portion, making it easy to operate the engagement lock portion.

[0014] The above problem is solved by the hanging hardware removal method of the present invention, which is a method for removing a hanging hardware used to lift a construction member of a building from the construction member using a hanging hardware removal jig equipped with a first removal member and a second removal member, the method including: a first abutment step in which the first removal member, which extends long, releases an engagement lock portion of the hanging hardware that engages with the construction member from the side; and a second abutment step in which, with the engagement lock portion of the hanging hardware disengaged in the first abutment step, the second removal member, which extends long, removes the hanging hardware from the construction member. In the first abutment step, the tip end of the first removal member, which is formed thinner than the base end of the first removal member, abuts against the engagement lock portion of the hanging hardware, and in the second abutment step, the tip end of the second removal member, which is formed thinner than the base end of the second removal member, abuts against the hanging hardware, thereby removing the hanging hardware from the construction member. With the above configuration, the long jig with a thin tip allows easy access to the hanging hardware even in hard-to-reach places. Furthermore, the first detachment member can be used to release the engagement between the installation member and the hanging hardware, and the second detachment member can be used to remove the hanging hardware from the installation member, improving workability. Therefore, the hanging hardware can be easily removed from the construction member. [Effects of the Invention]

[0015] According to the hanging hardware removal jig and hanging hardware removal method of the present invention, the hanging hardware can be easily removed from the construction member. [Brief explanation of the drawings]

[0016] [Figure 1] FIG. 2 is an overall perspective view of the hanging fitting removal jig and hanging fitting of the first embodiment. [Figure 2] FIG. 10 is a diagram for explaining the attachment state of the hanging fitting and the installation member, showing the state in which the hanging fitting and the installation member are engaged with each other. [Figure 3]10 is a diagram for explaining the attachment state of the hanging fitting and the installation member, showing the state in which the engagement between the hanging fitting and the installation member is released. FIG. [Figure 4] FIG. 10 is a diagram illustrating the attachment state of the hanging fitting and the construction member, showing the state in which the hanging fitting has been removed from the construction member. [Figure 5] FIG. [Figure 6] FIG. [Figure 7] FIG. 10 is a top view of the hanging hardware removal jig. [Figure 8] FIG. 10 is a left side view of the hanging hardware removal jig. [Figure 9] FIG. 10 is a right side view of the hanging hardware removal jig. [Figure 10] FIG. 10 is a top view showing the lifting hardware being removed using the lifting hardware removal jig. [Figure 11] FIG. 1 is a process diagram of a method for removing a hanging hardware. [Figure 12A] 10A and 10B are diagrams showing the proximity step of the hanging hardware removal method. [Figure 12B] 10A and 10B are diagrams showing a first contact step of the hanging hardware removal method. [Figure 12C] 10A and 10B are diagrams showing a second contact step of the hanging hardware removal method. [Figure 12D] 10A and 10B are diagrams showing the recovery process of the hanging hardware removal method. [Figure 13] FIG. 10 is a perspective view of a hanging hardware removal jig according to a second embodiment. [Figure 14] FIG. 10 is a top view showing the lifting hardware being removed using the lifting hardware removal jig. [Figure 15A] 10A and 10B are diagrams showing the proximity step of the hanging hardware removal method. [Figure 15B] 10A and 10B are diagrams showing a first contact step of the hanging hardware removal method. [Figure 15C] 10A and 10B are diagrams showing a second contact step of the hanging hardware removal method. [Figure 15D] 10A and 10B are diagrams showing the recovery process of the hanging hardware removal method. DETAILED DESCRIPTION OF THE INVENTION

[0017] A hanging hardware removal jig 1 according to one embodiment of the present invention (hereinafter referred to as this embodiment) will be described below with reference to FIGS. 1 to 15D. In the following description, as indicated by the arrows in Figure 1, the "up-down direction" refers to the vertical direction when the hanging hardware removal jig 1 is used to remove the hanging hardware T from the workpiece P, and coincides with the removal direction of the hanging hardware T. The "front-to-back direction" refers to the direction in which the hanging hardware removal jig 1 approaches the hanging hardware T when the hanging hardware removal jig 1 is used to remove the hanging hardware T from the workpiece P, and coincides with the longitudinal direction of the hanging hardware removal jig 1. The direction toward the hanging hardware T is referred to as the "front direction," and the direction away from the hanging hardware T is referred to as the "rear direction." Furthermore, the "left-right direction" refers to the width direction of the hanging hardware removal jig 1, and is a direction perpendicular to the "up-down direction" and "front-to-back direction."

[0018] <Hanging fitting removal jig of the first embodiment> As shown in Figure 1, the hanging fitting removal jig 1 is used to remove a hanging fitting T that suspends a construction member P of a building from the construction member P, and is a jig for releasing, from the side, the engagement lock portion T3 of the hanging fitting T that engages with the construction member P. Specifically, the hanging fitting removal jig 1 is used to vertically remove, from the indoor side of the building, the hanging fitting T that engages with the construction member P that is suspended on the outdoor side of the building.

[0019] First, the construction member P and the hanging fitting T will be described. As shown in Fig. 2, the construction member P is a rectangular plate-shaped member that constitutes a building, specifically an exterior wall panel. The construction member P is mainly composed of a rectangular plate-shaped panel frame P1 and a finishing surface material P2 fixed to the surface of the panel frame P1. Note that the construction member P is not particularly limited to an exterior wall panel, and may also be a waist wall panel, roof panel, eave panel, etc.

[0020] The panel frame P1 is attached to a lower beam B1 provided on the lower side of the construction member P and an upper beam B2 provided on the upper side. A first attachment shaft P1a and a second attachment shaft P1b protrude from the lower end of the back surface of the panel frame P1 for detachably attaching to lower fittings B1a and B1b provided on the lower beam B1, respectively. In addition, a fixing nut P1c is provided on the upper end of the back surface of the panel frame P1 for fixing to an upper fitting B2a provided on the upper beam B2.

[0021] To attach a construction member P to a building, first, a hanging bracket T is attached to the upper end of the panel frame P1 of the construction member P, and then the construction member P is lifted up by a crane C via the hanging bracket T. Then, as shown in Figure 2, the construction member P is suspended to a position near the building frame (lower beam B1 and upper beam B2) where the construction member P will be attached. 3, the construction member P is attached to the lower fittings B1a and B1b. When attaching the construction member P, first, the first attachment axis P1a and the second attachment axis P1b of the construction member P are fitted into the holes formed in the lower fittings B1a and B1b. After that, the construction member P is pulled to the indoor side of the building, and the construction member P is fixed with the fixing bolt B3 while the fixing nut P1c of the construction member P is connected to the hole formed in the upper fitting B2a.

[0022] After the construction member P is fixed to the lower beam B1 and the upper beam B2, as shown in FIG. 3, the lifting hardware removal jig 1 is inserted through the gap between the construction member P and the upper beam B2, and the lifting hardware removal jig 1 is brought close to the lifting hardware T. Then, the lifting hardware T is removed from the construction member P. As shown in FIG. 4, the lifting hardware T, which has been removed from the construction member P by the lifting hardware removal jig 1, is lifted up by the crane C. In this way, the hanging fitting removal jig 1 can easily access the hanging fitting T located on the outdoor side of the building from the indoor side, even if the gap between the construction member P and the upper beam B2 is narrow.

[0023] The lifting fitting T is a metal member that, as shown in Fig. 1, is detachably attached to the upper end of a workpiece P and is a jig for lifting the workpiece P with a crane C. More specifically, as shown in Fig. 5, the lifting fitting T includes a fitting main body T1 that connects to the crane C, a shaft T2 that extends downward from the fitting main body T1 and is inserted into an engagement hole formed in the workpiece P, an engagement lock portion T3 that prevents the shaft T2 from coming out of the engagement hole, and a biasing member T4 that biases the engagement lock portion T3 downward.

[0024] The metal fitting body T1 has a bell shape and has a lifting connection part T1a formed at its upper end. A hook member of the crane C is connected to the lifting connection part T1a. The metal fitting body T1 has a plurality of openings formed therein so as to correspond to the three operating pieces (first operating piece T3b, second operating piece T3c, and third operating piece T3d) of the engagement lock part T3. The shaft T2 is inserted into an engaging hole of the work member P, which is a long rod-shaped member. A step T2a that is hooked onto the engaging hole of the work member P is formed on the outer circumferential surface of the lower part of the shaft T2.

[0025] The engagement lock portion T3 is a retaining member that prevents the shaft T2 from coming out of the engagement hole of the construction member P when the step portion T2a of the shaft T2 is hooked into the engagement hole of the construction member P. The engagement lock portion T3 has a lock main body T3a, and a first operating piece T3b, a second operating piece T3c, and a third operating piece T3d that are connected to the upper side of the lock main body T3a. The lock main body portion T3a is disposed so as to cover the outer peripheral surface of the lower portion of the shaft body T2, and is disposed on the opposite side of the stepped portion T2a in the radial direction of the shaft body T2. The first operating piece T3b, the second operating piece T3c, and the third operating piece T3d each extend upward from the lock main body T3a and bend obliquely toward the outside in the radial direction of the shaft T2. The first operating piece T3b, the second operating piece T3c, and the third operating piece T3d serve as operating parts that pull the lock main body T3a upward to release the engagement between the hanging fitting T and the construction workpiece P. The biasing member T4 is a coil spring attached to the upper portion of the shaft T2. The upper end of the biasing member T4 is connected to the metal fitting main body T1, and the lower end is connected to the upper end of the lock main body portion T3a. The biasing force of the biasing member T4 biases the engagement lock portion T3 downward.

[0026] By pulling up one or more of the first operating piece T3b, the second operating piece T3c, and the third operating piece T3d against the biasing force of the biasing member T4, the lock main body T3a is pulled up. Then, when the shaft T2 is tilted with the lock main body T3a pulled up, the caught state of the step portion T2a is released. When the caught state of the step portion T2a is released, the shaft T2 is pulled out of the engagement hole of the construction member P by pulling the metal fitting main body T1 upward. In this way, the engagement between the hanging fitting T and the construction member P can be released by operating the engagement lock portion T3, and the fitting body T1 can be removed in the released state, thereby removing the hanging fitting T from the construction member P.

[0027] As shown in Figure 1, the hanging fitting removal jig 1 is a jig that extends longitudinally in the front-to-rear direction and is configured to allow access from the indoor side to a hanging fitting T located on the outdoor side and to operate the hanging fitting T. The hanging fitting removal jig 1 includes a first removal member 10 that extends longitudinally, a second removal member 20 that extends longitudinally and is connected to the first removal member 10 so as to be movable relative to it, and a connecting member 30 that connects the first removal member 10 and the second removal member 20. The first removal member 10 and the second removal member 20 are arranged side by side on the left and right by the connecting member 30 and are connected to each other so as to be movable relative to each other. Specifically, the second removal member 20 extends in the same direction as the first removal member 10 and is rotatably connected to the first removal member 10 by the connecting member 30.

[0028] The tip end 10a of the first removal member 10 abuts against the engagement lock portion T3 of the hanging fitting T. Specifically, the tip end 10a of the first removal member 10 is configured to abut against the first operating piece T3b of the engagement lock portion T3 from below, pulling the first operating piece T3b upward and disengaging the hanging fitting T from the construction member P. Furthermore, because the tip end 10a of the first removal member 10 is formed thinner than the base end 10b of the first removal member 10, even in places that are difficult for an operator to reach, the worker can access the hanging fitting T from the side and abut against the first operating piece T3b from below. The tip portion 20a of the second removal member 20 abuts against the fitting body T1 of the hanging fitting T. Specifically, the tip portion 20a of the second removal member 20 abuts against the lower end surface of the fitting body T1 from below, lifting the fitting body T1 upward and enabling the hanging fitting T to be removed from the construction member P. Furthermore, because the tip portion 20a of the second removal member 20 is formed thinner than the base end portion 20b of the second removal member 20, it is possible for an operator to access the hanging fitting T from the side and abut against the fitting body T1 from below, even in places that are difficult for the operator to reach.

[0029] In this way, the hanging fitting removal jig 1 is used to remove, from the indoor side of a building, a hanging fitting T that is engaged with a construction member P that is suspended on the outdoor side of the building. In the hanging fitting removal jig 1, the second removal member 20 rotates relative to the first removal member 10, with the tip portion 10a of the first removal member 10 abutting against the engagement lock portion T3 of the hanging fitting T to release the engagement lock portion T3, and the tip portion 20a of the second removal member 20 abuts against the fitting body T1 of the hanging fitting T, thereby removing the hanging fitting T from the construction member P.

[0030] Therefore, the first detachment member 10 and the second detachment member 20, which are long and have thin tips, allow easy access to the hanging fitting T from the side, even in hard-to-reach places. Additionally, the first detachment member 10 can be used to release the engagement between the installation member P and the hanging fitting T, and the second detachment member 20 can be used to remove the hanging fitting T from the installation member P, improving workability.

[0031] <First removal part> As shown in Figure 1, the first removal member 10 is a member for laterally releasing the engagement lock portion T3 of the hanging fitting T that engages with the construction member P. Specifically, the first removal member 10 is a wooden, scoop-shaped rod-like member that abuts against the first operating piece T3b of the engagement lock portion T3 to pull the lock main body portion T3a upward, thereby releasing the engagement between the hanging fitting T and the construction member P. Note that the first removal member 10 is not limited to being made of wood, and may also be made of steel or resin. As shown in Figures 6 to 9, the first removal member 10 has a first abutment portion 11 that abuts against the engagement lock portion T3 of the hanging fitting T, and a first extension portion 12 that is connected to the first abutment portion 11 and extends longitudinally from the first abutment portion 11 toward the base end portion 10b of the first removal member 10.

[0032] As shown in Fig. 7, the first contact portion 11 has a generally rectangular shape in top view and is provided at the tip end 10a of the first removal member 10. As shown in Figs. 8 and 9, the first contact portion 11 has a tapered surface 11a that becomes thinner from the base end 10b side toward the tip end 10a side of the first removal member 10. In other words, the first contact portion 11 is formed so that its thickness becomes thinner toward the front in side view. Note that the front portions of both widthwise ends of the first contact portion 11 are chamfered so that their thickness becomes thinner.

[0033] 6, a recess 11b recessed in the thickness direction is formed on the tapered surface 11a of the first contact portion 11. The recess 11b is provided in the center in the width direction of the first contact portion 11, and is formed at the front end of the first contact portion 11. In other words, the recess 11b is an abutment surface formed on the tip end portion 10a of the first removal member 10.

[0034] 6, the first contact portion 11 has an overlapping portion 11c that overlaps in the up-down direction with a second contact portion 21 of the second removal member 20, which will be described later. The overlapping portion 11c is formed in a portion of the first contact portion 11 that is on the second removal member 20 side in the width direction (the left portion of the first contact portion 11). In other words, the underside of the left portion of the first contact portion 11 is cut out, and the left portion is formed thinner than the right portion of the first contact portion 11.

[0035] In this way, by cutting out the portions that interfere when the first removal member 10 and the second removal member 20 are connected side by side, the first abutment portion 11 and the second abutment portion 21 can overlap in the vertical direction. Therefore, when the hanging fitting removal jig 1 is brought into contact with the hanging fitting T, the tip ends of both the first removal member 10 and the second removal member 20 can be brought into contact with the hanging fitting T. More specifically, the first removal member 10 can be brought into contact with the first operating piece T3b of the engagement lock portion T3 from below, and the second removal member 20 can be brought into contact with the lower end surface of the fitting main body T1, which is located below the first operating piece T3b, from below.

[0036] 6 to 9, the first extension portion 12 has a rectangular prism shape that is long in the front-to-rear direction, and is provided at the base end portion 10b of the first removal member 10. The first extension portion 12 is connected to the first abutment portion 11, and extends elongatedly from the first abutment portion 11 toward the base end portion 10b of the first removal member 10. First extension portion 12 is a portion that an operator holds when removing hanging fitting T with hanging fitting removal jig 1. First extension portion 12 is formed thicker than the front end of first contact portion 11 (tip end portion 10a of first removal member 10), making it easier for an operator to grip and increasing rigidity.

[0037] In order to access the hanging fitting T from the side, the first detachable member 10 needs to be long, but in order to insert the first detachable member 10 into a place that is difficult for an operator to reach, the first detachable member 10 needs to be thin. Therefore, by making the distal end portion 10a of the first removal member 10 thin and the proximal end portion 10b of the first removal member 10 thick, it is possible to improve workability and rigidity.

[0038] 7, a through hole 12a is formed in the first extending portion 12, penetrating the first extending portion 12 in the width direction. A connecting member 30 is inserted into the through hole 12a. By inserting the connecting member 30 into the through hole 12a, the first detachment member 10 and the second detachment member 20 are connected to each other.

[0039] 10 is a top view of the state when the hanging fitting T is being removed with the hanging fitting removal jig 1. The tip 10a of the first removal member 10 abuts against the engagement lock portion T3 of the hanging fitting T. Specifically, the recess 11b formed in the first abutment portion 11 of the first removal member 10 abuts against the first operating piece T3b from below. In this state, when the tip 10a of the first removal member 10 is lifted upward, the first operating piece T3b moves upward relative to the fitting body T1, and the engagement between the hanging fitting T and the construction member P can be released.

[0040] <Second removal member> As shown in Figure 1, the second removal member 20 is a member for laterally releasing the fitting body T1 of the hanging fitting T that is engaged with the construction member P. Specifically, the second removal member 20 is a wooden rod-like member that has a triangular shape in side view, and it abuts against the lower end surface of the fitting body T1 to remove the shaft body T2 from the engagement hole in the construction member P, thereby removing the hanging fitting T from the construction member P. Note that the second removal member 20 is not limited to being made of wood, and may also be made of steel or resin. As shown in Figures 6 to 9, the second removal member 20 has a second abutment portion 21 that abuts against the fitting body T1 of the hanging fitting T, and a second extension portion 22 that is connected to the second abutment portion 21 and extends longitudinally from the second abutment portion 21 toward the base end portion 20b of the second removal member 20.

[0041] As shown in Fig. 7, the second abutment portion 21 has a generally rectangular shape in a top view, and is provided on the tip end 20a of the second removal member 20. As shown in Figs. 8 and 9, the second abutment portion 21 has an inclined surface 21a that becomes thinner from the base end 20b side toward the tip end 20a side of the second removal member 20. In other words, the second abutment portion 21 and the second extending portion 22 are formed continuously, and the second abutment portion 21 and the second extending portion 22 are formed so that their thicknesses become thinner toward the front in a side view.

[0042] 6, the second contact portion 21 overlaps with the overlapping portion 11c of the first contact portion 11 of the first removal member 10 in the up-down direction. The second contact portion 21 is disposed below the overlapping portion 11c. In other words, the second contact portion 21 is disposed so as to fit into the notch portion of the first contact portion 11.

[0043] As described above, by cutting out the portions that interfere when the first detachable member 10 and the second detachable member 20 are connected side by side, the first abutment portion 11 and the second abutment portion 21 can overlap in the vertical direction. In this way, when the hanging fitting removal jig 1 is brought into contact with the hanging fitting T, the second removal member 20 can be brought into contact with the lower end surface of the fitting main body T1 from below, lifting the fitting main body T1 upward, while the first removal member 10 keeps the hanging fitting T disengaged from the construction member P. Therefore, because the first abutment portion 11 and the second abutment portion 21 are arranged so as to overlap one another vertically, the hanging fitting removal jig 1 can be removed near the hanging fitting T.

[0044] As shown in Figures 6 to 9, the second extending portion 22 is provided on the base end portion 20b of the second removal member 20. The second extending portion 22 is connected to the second abutting portion 21 and extends longitudinally from the second abutting portion 21 toward the base end portion 20b of the second removal member 20. An elongated hole 22a is formed in the second extending portion 22. In addition, the rear portion 22b of the second extending portion 22 has a notched bottom surface. Rear portion 22b is a portion that an operator holds when removing hanging fitting T with hanging fitting removal jig 1. Rear portion 22b of second extension portion 22 is formed thicker than the front end of second abutment portion 21 (tip end portion 20a of second removal member 20) and is cut out, making it easier for an operator to grip and increasing rigidity.

[0045] In order to access the hanging fitting T from the side, the second detachment member 20 needs to be long, but in order to insert the second detachment member 20 into a place that is difficult for an operator to reach, the second detachment member 20 needs to be thin. Therefore, by making the tip end 20a of the second removal member 20 thin, while making the base end 20b of the second removal member 20 thick, and further cutting out the portion that will become the handle, it is possible to improve workability and rigidity.

[0046] 7, the second extending portion 22 has an elongated hole 22a formed therein, which penetrates the second extending portion 22 in the width direction and extends in the extending direction (front-rear direction) of the second extending portion 22. A connecting member 30 is inserted into the elongated hole 22a. By inserting the connecting member 30 into the elongated hole 22a, the first detachment member 10 and the second detachment member 20 are connected to each other.

[0047] 10 is a top view of the state when the hanging fitting T is being removed using the hanging fitting removal jig 1. The tip 20a of the second removal member 20 abuts against the fitting body T1 of the hanging fitting T. Specifically, the flat front end of the second abutment portion 21 of the second removal member 20 abuts against the lower end surface of the fitting body T1 from below. In this state, when the tip 20a of the second removal member 20 is lifted upward, the fitting body T1 moves upward relative to the construction member P, and the hanging fitting T can be removed from the construction member P.

[0048] <Connecting member> 6 to 9, the connecting member 30 is a member that connects the first detachment member 10 and the second detachment member 20. Specifically, the connecting member 30 is a long rod-shaped member that extends in the width direction of the first detachment member 10 and the second detachment member 20. As shown in FIG. 7, the connecting member 30 is inserted into the through hole 12a of the first detachment member 10 and the elongated hole 22a of the second detachment member 20, and connects the first detachment member 10 and the second detachment member 20 so that the first extension portion 12 and the second extension portion 22 are aligned in the width direction. The first removal member 10 and the second removal member 20 are connected by the connecting member 30 through the elongated hole 22a so as to be movable relative to each other in the front-to-rear direction. In other words, the second removal member 20 is movable relative to the first removal member 10 in the extension direction (front-to-rear direction) as the connecting member 30 moves within the elongated hole 22a.

[0049] The connecting member 30 is formed to be longer than the widthwise lengths of the first extending portion 12 and the second extending portion 22, and passes through the through-hole 12a and the elongated hole 22a. In other words, the total length of the width of the first extending portion 12 and the width of the second extending portion 22 is configured to be shorter than the length of the connecting member 30. Therefore, the first removal member 10 and the second removal member 20 are connected by the connecting member 30 so as to be movable relative to each other in the left-right direction. In other words, the second removal member 20 is movable relative to the first removal member 10 in the width direction.

[0050] Furthermore, the connecting member 30 connects a portion of the first detachment member 10 and a portion of the second detachment member 20 so that they overlap in the vertical direction. Specifically, the connecting member 30 connects the first detachment member 10 and the second detachment member 20 so that the overlapping portion 11c of the first abutting portion 11 of the first detachment member 10 is positioned above the second abutting portion 21 of the second detachment member 20. Therefore, when the hanging fitting detachment jig 1 is brought into contact with the hanging fitting T, the tip ends of both the first detachment member 10 and the second detachment member 20 can be brought into contact with the hanging fitting T.

[0051] The second removal member 20 is movable in the front-rear and left-right directions relative to the first removal member 10 via the connecting member 30. The second removal member 20 is also connected to the first removal member 10 so as to be rotatable around the connecting member 30 as an axis. In this way, the first removal member 10 and the second removal member 20 are movable relative to each other while being connected, improving workability. Furthermore, the first removal member 10 and the second removal member 20 are connected by the connecting member 30, making them easy to carry.

[0052] A first stopper member 31 and a second stopper member 32 are provided on both ends of the connecting member 30. The first stopper member 31 is fixed to the end of the connecting member 30 on the first extension portion 12 side. The second stopper member 32 is fixed to the end of the connecting member 30 on the second extension portion 22 side. The first stopper member 31 and the second stopper member 32 prevent the connecting member 30 from falling off the first detachment member 10 and the second detachment member 20. In this embodiment, the first detachment member 10 and the second detachment member 20 are connected by a rod-shaped connecting member 30, but they may also be connected by a string-shaped member. Furthermore, although the elongated hole 22a is formed in the second detachment member 20, an elongated through-hole 12a may be formed in the first detachment member 10, or both the first detachment member 10 and the second detachment member 20 may be elongated holes. Furthermore, the connecting member 30 passes through both the first detachment member 10 and the second detachment member 20, but the connecting member 30 may be fixed to either the first detachment member 10 or the second detachment member 20.

[0053] <How to remove the hanging bracket> Here, a description will be given of a hanging fitting removal method for removing a hanging fitting T, which suspends a construction member P of a building, from the construction member P using the hanging fitting removal jig 1. As shown in FIG. 11 , the hanging fitting removal method includes an “approaching step (S1)” in which the hanging fitting removal jig 1 is brought close to the hanging fitting T; a “first abutting step (S2)” in which the engagement lock portion T3 of the hanging fitting T engaged with the construction member P is released from the side using the elongated first removal member 10; a “second abutting step (S3)” in which, with the engagement lock portion T3 of the hanging fitting T disengaged in the first abutting step, the hanging fitting T is removed from the construction member P using the elongated second removal member 20; and a “recovery step (S4)” in which the hanging fitting T is removed from the construction member P and lifted up. Note that a description of construction steps other than those described above in constructing the construction member P will be omitted.

[0054] In the "approaching step (S1)," as shown in Fig. 12A, the worker grasps the lifting fitting removal jig 1 and brings it close to the lifting fitting T from the side. Specifically, the worker grasps the base end 10b of the first removal member 10 and the base end 20b of the second removal member 20, moves them from the indoor side of the building to the outdoor side, and brings the lifting fitting removal jig 1 close to the lifting fitting T through the gap between the construction member P and the skeleton (specifically, the upper beam B2 shown in Fig. 3). At this time, the shaft T2 of the hanging fitting T is inserted into the engagement hole of the construction member P together with the lock main body T3a, and the stepped portion T2a is hooked onto the engagement hole.

[0055] In the "first abutment step (S2)," as shown in FIG. 12B, the worker abuts the tip end 10a of the first removal member 10, which is formed thinner than the base end 10b of the first removal member 10, against the engagement lock portion T3 of the hanging fitting T. Specifically, the worker presses the tip end 10a of the first removal member 10 against the underside of the first operating piece T3b and pulls the first operating piece T3b upward. By pulling the first operating piece T3b up against the biasing force of the biasing member T4, the lock main body portion T3a is pulled upward. At this time, the first operating piece T3b can be stably pulled upward by bringing the tip portion 20a of the second removal member 20 into contact with the metal fitting main body T1 or the installation member P and rotating the first removal member 10 upward relative to the second removal member 20. Note that the principle of leverage may also be used to bring the first removal member 10 into contact with the installation member P and rotate the tip portion 10a of the first removal member 10 upward.

[0056] In the "second abutment step (S3)," as shown in FIG. 12C , the worker abuts the tip end 20a of the second removal member 20, which is formed thinner than the base end 20b of the second removal member 20, against the hanging fitting T, and removes the hanging fitting T from the installation member P. Specifically, the worker moves the second removal member 20 forward relative to the first removal member 10 and inserts the tip end 20a of the second removal member 20 into the gap between the lower end surface of the fitting main body T1 and the upper end surface of the installation member P. Then, the tip end 20a of the second removal member 20 is pressed against the lower end surface of the fitting main body T1, pushing the fitting main body T1 upward. When the shaft T2 is tilted by the second removal member 20 with the lock main body portion T3a pulled upward by the first removal member 10, the caught state of the step portion T2a is released, and the fitting main body T1 can be removed upward. At this time, by using the principle of leverage, the second removal member 20 is brought into contact with the construction member P and the tip portion 20a of the second removal member 20 is rotated upward, the metal fitting main body T1 can be stably pushed upward.

[0057] In the "recovery step (S4)," as shown in Figure 12D, a worker lifts and recovers the lifting fitting T that has been detached from the construction member P. Specifically, the lifting fitting T, with the shaft body T2 pulled out of the engagement hole of the construction member P, is lifted by a crane C and completely separated from the construction member P. At this time, the engaging lock portion T3 of the lifting fitting T moves downward relative to the fitting body T1 due to the biasing force of the biasing member T4, and the lifting fitting T returns to its original state.

[0058] In this way, the first removal member 10 and the second removal member 20, which are long and have thin tips, allow easy access to the hanging fitting T from the side, even in hard-to-reach places. Additionally, the first removal member 10 can be used to release the engagement between the installation member P and the hanging fitting T, and the second removal member 20 can be used to remove the hanging fitting T from the installation member P, improving workability.

[0059] <Hanging hardware removal jig of second embodiment> Next, a hanging fitting removal jig 101 according to a second embodiment will be described with reference to FIGS. The explanation of the same content as that of the hanging fitting removal jig 1 described above will be omitted.

[0060] 13, the hanging fitting removal jig 101 is a jig that extends longitudinally in the front-to-rear direction and is configured to allow access from the indoor side to the hanging fitting T located on the outdoor side and to operate the hanging fitting T. The hanging fitting removal jig 101 includes a first removal part 110 that extends longitudinally, and a second removal part 120 that is connected to the first removal part 110 and also extends longitudinally.

[0061] 14, the tip 110a of the first detachment part 110 abuts against the engagement lock part T3 of the suspending fitting T. Specifically, the tip 110a of the first detachment part 110 abuts against the second operating piece T3c of the engagement lock part T3 from below, and is configured to be able to pull the second operating piece T3c upward and release the engagement between the suspending fitting T and the construction member P. The tip 120a of the second detachment part 120 abuts against the engagement lock part T3 of the suspending fitting T. Specifically, the tip 120a of the second detachment part 120 abuts against the third operating piece T3d of the engagement lock part T3 from below, and is configured to be able to pull the third operating piece T3d upward and release the engagement between the suspending fitting T and the construction member P.

[0062] The tip 110a of the first detachment part 110 and the tip 120a of the second detachment part 120 have a tapered shape that becomes thinner toward the front, as shown in Fig. 13. In other words, the tip portion of the hanging hardware removal jig 101 is formed so that its thickness becomes thinner toward the front in a side view. Because the tip end 110a of the first detachable portion 110 is formed thinner than the base end 110b of the first detachable portion 110, even in places that are difficult for an operator to reach, the operator can access the suspending fitting T from the side and abut against the second operating piece T3c from below. Furthermore, because the tip end 120a of the second detachable portion 120 is formed thinner than the base end 120b of the second detachable portion 120, even in places that are difficult for an operator to reach, the operator can access the suspending fitting T from the side and abut against the third operating piece T3d from below.

[0063] In this way, first detachment part 110 and second detachment part 120, which are long and have thin tips, allow easy access to the hanging fitting T from the side, even in hard-to-reach places. Furthermore, first detachment part 110 and second detachment part 120 make it easy to release the engagement between the construction member P and the hanging fitting T, improving workability. In other words, since both the tip 110a of the first detachment portion 110 and the tip 120a of the second detachment portion 120 abut against the engagement lock portion T3, the engagement between the construction member P and the hanging fitting T is easily released, and the hanging fitting T can be easily removed from the construction member P.

[0064] <How to remove the hanging bracket> Here, a method for removing a hoisting fitting T that hoists a construction member P of a building from the construction member P using the hoisting fitting removal jig 101 will be described.

[0065] In the "approaching step (S1)," as shown in Fig. 15A, the worker grasps the lifting fitting removal jig 101 and brings it close to the lifting fitting T from the side. Specifically, the worker grasps the base end 110b of the first removal section 110 and the base end 120b of the second removal section 120, moves them from the indoor side of the building to the outdoor side, and brings the lifting fitting removal jig 1 close to the lifting fitting T through the gap between the construction member P and the frame (specifically, the upper beam B2 shown in Fig. 3).

[0066] 15B, in the "first abutment step (S2)," the worker abuts the tip end 110a of the first detachable portion 110, which is formed thinner than the base end 110b of the first detachable portion 110, against the engagement lock portion T3 of the hanging fitting T. Specifically, the worker presses the tip end 110a of the first detachable portion 110 against the underside of the second operating piece T3c, and pulls the second operating piece T3c upward.

[0067] In the "second abutment step (S3)," as shown in FIG. 15C, the worker abuts the tip end 120a of the second detachment portion 120, which is formed thinner than the base end 120b of the second detachment portion 120, against the hanging fitting T, and removes the hanging fitting T from the construction workpiece P. Specifically, the worker presses the tip end 110a of the first detachment portion 110 against the underside of the second operating piece T3c, and simultaneously presses the tip end 120a of the second detachment portion 120 against the underside of the third operating piece T3d. With the lock main body portion T3a pulled upward by the hanging fitting removal jig 101, shaking the fitting main body T1 tilts the shaft T2. The caught state of the step portion T2a is then released, and the fitting main body T1 can be removed upward. At this time, using the principle of leverage, the hanging fitting removal jig 101 is abutted against the construction member P, and the tip 110a of the first removal portion 110 and the tip 120a of the second removal portion 120 are rotated upward, allowing the fitting body T1 to be stably pushed upward while the engagement lock portion T3 is unlocked.

[0068] In the "recovery step (S4)," as shown in Figure 15D, a worker lifts up the hoisting fitting T that has been removed from the construction member P. Specifically, the hoisting fitting T, with the shaft body T2 pulled out of the engagement hole of the construction member P, is lifted up by a crane C and completely separated from the construction member P. At this time, the urging force of the urging member T4 causes the engagement lock portion T3 to move downward relative to the fitting body T1, returning the hoisting fitting T to its original state.

[0069] In this way, first detachment part 110 and second detachment part 120, which are long and have thin tips, allow easy access to the hanging fitting T from the side, even in places that are hard to reach. Furthermore, first detachment part 110 and second detachment part 120 make it easy to release the engagement between the construction member P and the hanging fitting T, while also allowing the hanging fitting T to be removed from the construction member P, improving workability.

[0070] In the above embodiment, the hanging hardware removal jig according to the present invention has been mainly described. However, the above embodiment is merely an example for facilitating understanding of the present invention, and does not limit the present invention. The present invention can be modified and improved without departing from the spirit thereof, and the present invention naturally includes equivalents thereof. In particular, the above-described embodiments are merely examples and do not limit the present invention. [Explanation of symbols]

[0071] 1 Hanging hardware removal jig 10 First removal member 10a Tip 10b Base end 11 First contact part 11a Tapered surface 11b Recess 11c Overlap 12 First extension part 12a Through hole 20 Second removal member 20a Tip 20b Base end 21 Second contact part 21a Slope 22 Second extension part 22a long hole 22b rear part 30 Connecting member 31 First stopper member 32 second stopper member 101 Hanging hardware removal jig 110 First detachable portion (first detachable member) 110a Tip 110b Proximal end 120 Second detachment portion (second detachment member) 120a tip 120b Proximal end T-hanging bracket T1 metal fittings body T1a Hanging connection T2 shaft body T2a Step T3 Engagement lock part T3a lock body T3b First operation piece T3c second operation piece T3d third operation piece T4 biasing member P construction parts P1 Panel Frame P1a First mounting axis P1b Second mounting shaft P1c Fixing nut P2 Finishing Surface Material B1 lower beam B1a Lower bracket B2 upper beam B2a Upper bracket B3 Fixing bolt C Crane

Claims

1. A metal fitting removal jig used to remove a hoisting metal fitting for lifting a construction member of a building from the construction member, which releases an engagement lock portion of the hoisting metal fitting engaged with the construction member from the side, a first elongated detachment member; a second detachment member connected to the first detachment member so as to be movable relative to the first detachment member and extending longitudinally; a tip end portion of the first detachment member abuts against the engagement lock portion of the hanging hardware and is formed thinner than a base end portion of the first detachment member; A hanging hardware removal jig characterized in that the tip end of the second removal member abuts against the hardware body of the hanging hardware and is formed thinner than the base end of the second removal member.

2. the second removal member extends in the same direction as the first removal member and is pivotally connected to the first removal member; The hanging hardware removal jig is The hanging hardware is used to remove, from the indoor side of the building, the hanging hardware that engages with the construction member that is hung on the outdoor side of the building, A hanging hardware removal jig as described in claim 1, characterized in that when the tip of the first removal member abuts against the engagement lock portion of the hanging hardware to release the engagement lock portion, the second removal member rotates relative to the first removal member, and the tip of the second removal member abuts against the hardware body of the hanging hardware to remove the hanging hardware from the construction member.

3. a connecting member that connects the first detaching member and the second detaching member and extends in a width direction of the first detaching member and the second detaching member; The first removal member is a first contact portion provided at a tip end of the first removal member; a first extension portion connected to the first abutment portion and extending longitudinally from the first abutment portion toward the base end portion of the first removal member, The second removal member is a second abutment portion provided at a tip end portion of the second removal member; a second extending portion connected to the second abutting portion and extending longitudinally from the second abutting portion toward the base end portion of the second removal member, the connecting member connects the first detaching member and the second detaching member such that the first extending portion and the second extending portion are aligned in the width direction, The hanging hardware removal jig according to claim 1 or 2, wherein the first contact portion has an overlapping portion that overlaps the second contact portion in the vertical direction.

4. a long hole penetrating the first extending portion or the second extending portion in the width direction and extending in the extending direction of the first extending portion or the second extending portion is formed in the first extending portion or the second extending portion; the connecting member is inserted into the elongated hole and connects the first detaching member and the second detaching member such that the first extending portion and the second extending portion are aligned in the width direction; The hanging hardware removal jig according to claim 3, characterized in that the second removal member is movable relative to the first removal member in the extension direction by the connecting member moving within the elongated hole.

5. The connecting member is formed to be longer than the lengths of the first extending portion and the second extending portion in the width direction, The hanging hardware removal jig according to claim 4, wherein the second removal member is movable in the width direction relative to the first removal member.

6. the first abutment portion has a tapered surface that becomes thinner from a base end side toward a tip end side of the first removal member, a recess recessed in a thickness direction is formed on the tapered surface of the first contact portion, The hanging hardware removal jig according to claim 3, wherein the recess abuts against the engagement lock portion of the hanging hardware in the thickness direction.

7. A method for removing a hanging hardware that lifts a construction member of a building from the construction member using a hanging hardware removal jig that includes a first removal member and a second removal member, a first abutment step in which the first detachment member, extending longitudinally, releases the engagement lock portion of the hanging hardware engaged with the installation member from the side; a second contact step of removing the hanging hardware from the installation member by the elongated second removal member while the engagement of the engagement lock portion of the hanging hardware is released in the first contact step, In the first abutting step, a tip end portion of the first detaching member, which is formed thinner than a base end portion of the first detaching member, is abutted against the engagement lock portion of the hanging hardware, In the second abutment process, the tip end of the second removal member, which is formed thinner than the base end of the second removal member, is abutted against the hanging hardware, thereby removing the hanging hardware from the construction member.

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