JP5609066B2 - Hanging jig - Google Patents

Description

The present invention relates to a hanging jig , and particularly relates to a hanging jig effective for lifting a concrete member.

  When dismantling and removing concrete foundations in buildings, the foundations to be demolished can be transported with a dump truck etc. using a cutting machine etc. It is cut into sizes and weights, transported from the site to a disposal site by a dump truck, etc., and pulverized using a pulverizer at the disposal site.

  When placing the cut concrete member on the dump truck, for example, as shown in FIGS. 15 and 16, anchor bolts 20 are placed on the top and bottom of the side surface 18 of the concrete member 17, and the hanging jig 25 is secured by the anchor bolt 20. Is fixed, and a sling wire 23 is attached between the lifting jig 25 and a hook of a lifting machine such as a crane truck, and the concrete member 17 is lifted by the lifting machine.

  In this case, the hanging jig 25 is composed of, for example, a rectangular plate-shaped base portion 26 and an I-shaped hanging portion 27 integrally provided at the center of the surface of the base portion 26, and each of the hanging jigs 25 provided at the four corners of the base portion 26. By inserting the heads of the anchor bolts 20 placed on the side surface 18 of the concrete member 17 into the bolt insertion holes, and tightening the nuts on the heads of the anchor bolts 20 protruding from the surface of the base 26, It is fixed to the side surface 18 of the concrete member 17. Further, a concrete member is obtained by attaching one end of a sling wire 23 to a pin insertion hole of a suspension portion 27 of the hanging jig 25 through a shackle and attaching the other end of the sling wire 23 to a hook of a hoist such as a crane truck. A slinging wire 23 is hooked between a side surface 17 of 17 and a hook of a hoist such as a crane truck.

By the way, when the concrete member 17 is lifted using the suspension jig 25 and the sling wire 23 having the above-described configuration, the suspension point of the suspension portion 27 of the suspension jig 25 is separated from the side surface 18 of the concrete member 17 by a distance a. As a result, the moment M around the suspension point is generated. That is, the tension of the sling wire 23 T, a T _V vertical component force _and a horizontal force component and T _H, the moment _{M (M = T V · a} ) around Tsuten occurs under this moment M A tensile force acts on the anchor bolt 20 on the side, and this tensile force may cause a cone-shaped fracture on the side surface 18 of the concrete member 17. This cone-shaped fracture causes the anchor bolt 20 to be damaged by the internal reinforcement of the concrete member 17. It is difficult to prevent it from being cast deeper than the cover thickness.

  An example of this type of hanging jig is described in Patent Document 1. The suspension jig includes a bearing portion, a bolt that is rotatably supported by the bearing portion, an engagement portion that is fixed to the outer peripheral side of the bearing portion by welding, and a peripheral surface of the bolt on the tip side of the bearing portion. And a disk portion provided so as to be tiltable.

  In this suspension jig, a bolt is screwed into an insert embedded in a concrete product in advance, and a disk portion is interposed between the tip of the bearing portion and the surface of the concrete product. A concrete product can be lifted through a slinging wire and a hanging jig by a lifting machine such as a crane by hooking the slinging wire in the hole via a shackle.

  In the hanging jig having such a configuration, since the engaging portion is inclined, there is no possibility that the slinging wire comes into contact with the concrete product even if the upper portion of the concrete product projects outward. In addition, when the concrete product is lifted, the surface of the concrete product is pressed through the disk portion, so that the force acting on the insert can be reduced, and the concrete around the insert can cause shear failure. Can be prevented.

JP 2000-255972 A

  However, depending on the embedding depth of the insert in the concrete product, as described above, a moment around the insert is generated, and the concrete around the insert may cause cone-like fracture due to this moment.

The present invention has been made in view of the conventional problems as described above, and provides a hanging jig that does not cause a cone-like fracture in a concrete member when a heavy concrete member is lifted. The purpose is to do.

In order to solve the above problems, the present invention employs the following means.
That is, the present invention is a concrete member suspension jig having a side surface and an upper surface that is substantially perpendicular to the side surface, and is provided with an arm portion provided so as to extend in the lateral direction and a vertical portion at the center portion of the arm portion. Leg portions provided so as to extend in the direction, the arm portions and the back side of the leg portions abut on the side surface of the concrete member, and the upper end portion of the leg portion is from the upper edge of the side surface of the concrete member also arranged so as to project upward, a first contact portion which opposite ends of the transverse direction of the arm portion by Da設by a plurality of anchor bolts on the side surface of the concrete member is fixed to the side surface of the concrete member A second contact portion that is integrally provided on the back surface of the first contact portion so that an angle formed with the first contact portion is substantially a right angle, and the back surface is in contact with the upper surface of the concrete member; of the leg portion of the first contact portion Characterized in that it comprises a hanging portion and for hooking the hanging member provided in the portion above than the upper edge of the side surface of the serial concrete member.
According to the hanging jig of the present invention, the hanging portion is provided in a portion above the upper edge portion of the concrete member of the first contact portion fixed to the side surface of the concrete member by a plurality of anchor bolts. Since the suspension member is attached to the upper surface of the concrete member and the second contact portion is in contact with the upper surface of the concrete member, the moment around the suspension portion when lifting the concrete member is the second contact portion. Therefore, only a shearing force corresponding to the vertical component force TV of the tension T of the suspension member is applied to each anchor bolt, and a tensile force (pulling force) is applied to each anchor bolt. ) Does not occur, and no conical fracture occurs in the concrete member.
Further, the distance between the anchor bolts for fixing the both end portions of the arm portion of the first contact portion to the side surface of the concrete member can be made longer than that in which the first contact portion is formed in, for example, a rectangular plate shape. Therefore, it can prevent that the range of the cone-shaped fracture centering on each anchor bolt overlaps, and can raise the yield strength with respect to the tensile force of each anchor bolt.

Further, the present invention is a concrete member suspension jig having a side surface and an upper surface that is substantially perpendicular to the side surface, and is in contact with the side surface of the concrete member and above the upper edge of the side surface. A first abutting portion that is fixed to the side surface by a plurality of anchor bolts that are provided on the side surface of the concrete member, and the first contact portion on the back surface of the first abutting portion. A second contact portion whose back surface is in contact with the top surface of the concrete member, and a side surface of the concrete member of the first contact portion. A suspension part for hanging a suspension member provided in a part above the edge part, and the first contact part is capable of advancing and retreating in a side surface direction of the concrete member, and a tip is a side surface of the concrete member Can contact Fastening screws are screwed at a plurality of locations, and the second abutting portion has a fastening screw capable of advancing and retreating in the upper surface direction of the concrete member and having a tip abutting against the upper surface of the concrete member at a plurality of locations. It is characterized by being worn.
According to the hanging jig of the present invention, even if a gap is formed between the first contact portion and the side surface of the concrete member due to the surface shape of the concrete member, the first contact portion is constricted via the fastening screw.
It can be integrated with the side surface of the seat member. Moreover, even if a gap is formed between the second contact portion and the upper surface of the concrete member, the second contact portion can be integrated with the upper surface of the concrete member via the fastening screw. Accordingly, when the concrete member is lifted, the first contact portion and the second contact portion are caused by the presence of the clearance between the first contact portion and the side surface of the concrete member and the clearance between the second contact portion and the concrete member. The contact portion is not deformed, and the suspension portion can be kept at a portion above the side surface of the concrete member of the first contact portion.

Further, in the present invention, the distance L ₁ to the center of the suspender from the upper edge portion of the side surface of the concrete _member, a distance from the upper edge of the side surface of the concrete member to the axis of the anchor bolt L when a _2, L 1 _<like relationship L ₂ holds true, pouring position of the hanging portion and the anchor bolt may be configured.

According to the suspension jig of the present invention, the tension of the suspension member in the suspension portion is T, the horizontal component force is _TH1 , and the vertical component force _TV1, and the force acting on the suspension jig from the anchor bolt is the horizontal component. When the force is T _H2 , the relationship of T _H1 · L ₁ = T _H2 · L ₂ is established (the principle of the insulator), and L ₁ <L ₂ , so that T _H2 <T _H1 . Thus, suspender of the first contact portion is displaced in a horizontal direction for some reason, even if a horizontal component force T _H1, it is possible to reduce the T _H2 this principle of leverage, the T _H2 A tensile force acting on the anchor bolt as a reaction force can be reduced, and a cone-like fracture can be prevented from occurring in the concrete member.

  Furthermore, in the present invention, a reinforcing portion that keeps an angle formed by the first contact portion and the second contact portion at a substantially right angle may be integrally provided between the first contact portion and the second contact portion.

According to the hanging jig of the present invention, the angle between the first abutting portion and the second abutting portion is maintained at a substantially right angle by the reinforcing portion. only shear force corresponding to the vertical direction component force T _V tension T will be is applied.

  Furthermore, in the present invention, an end portion of the first contact portion may be bent at a predetermined angle, and the hanging portion may be provided at the bent portion.

  According to the hanging jig of the present invention, by adjusting the bending angle of the first contact portion to the angle of the hanging member when the hanging member is hooked on the hanging portion and the concrete member is lifted, Can be reduced.

  Furthermore, in this invention, it is good also as a ring-shaped member being previously attached to the said suspension part, and the said suspension member being attached to this ring-shaped member.

  According to the hanging jig of the present invention, the moment around the hanging point when the hanging member is hooked on the hanging portion and the concrete member is lifted can be reduced.

As described above, according to the suspension jig of the present invention, only the shearing force corresponding to the vertical component Tv of the tension T of the suspension member is applied to the anchor bolts placed on the concrete member. Therefore, no tensile force (pull-out force) is generated in the anchor bolt, and it is possible to prevent the cone-like fracture from occurring in the concrete member.

It is the front view which showed 1st Embodiment of the hanging jig by this invention. It is a top view of FIG. It is a left view of FIG. It is a perspective view of the hanging jig of FIG. It is explanatory drawing which showed the lifting state of the concrete member by the hanging jig | tool of 1st Embodiment. It is A arrow directional view of FIG. FIG. 6 is a view taken in the direction of arrow B in FIG. 5. It is explanatory drawing which showed the force relationship of the hanging jig | tool of 1st Embodiment. It is the perspective view which showed 2nd Embodiment of the hanging jig by this invention. It is explanatory drawing which showed the lifting state of the concrete member by the hanging jig | tool of 2nd Embodiment. It is the schematic which showed 3rd Embodiment of the hanging jig by this invention. It is the schematic which showed 4th Embodiment of the hanging jig by this invention. It is explanatory drawing which showed the state which attached the hanging jig | tool of 4th Embodiment to the concrete member. It is the schematic perspective view which showed 5th Embodiment of the hanging jig by this invention. It is the schematic which showed an example of the conventional hanging jig. It is explanatory drawing which showed the state which the cone-shaped destruction with the conventional hanging jig | tool produced.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 7 show a first embodiment of a hanging jig according to the present invention. For example, when dismantling and removing a concrete foundation or the like of a building, the hanging jig 1 is constructed by removing the foundation or the like to be dismantled on site with a cutting machine or the like as shown in FIG. Are cut into a plurality of concrete members 17 having a substantially right angle (substantially rectangular parallelepiped shape in the example of FIG. 5), and a sling wire 23 as a suspension member is hooked on the cut concrete members 17 to form a crane. It is effective for lifting by a lifting machine such as a car.
In addition, you may use a chain instead of a sling wire as a suspension member.

  That is, as shown in FIGS. 1 to 7, the hanging jig 1 according to the present embodiment includes a first contact portion 2 made of a steel plate provided in a state where the back surface 2 b is in contact with the side surface 18 of the concrete member 17. The second contact portion 9 made of a steel plate provided integrally with the first contact portion 2 and in contact with the back surface 9b of the upper surface 19 of the concrete member 17, the first contact portion 2, A pair of reinforcing portions 10 and 10 made of a steel plate provided integrally with the two abutting portions 9 are provided.

  The first abutting portion 2 has a rectangular plate shape, and a second abutting portion 9 having a rectangular plate shape is provided on the back surface 2 b side of the first abutting portion 2. Are integrally connected by welding so that the angle between the back surface 2b and the back surface 2b is substantially a right angle.

  Each reinforcing portion 10 has a triangular plate shape, and is integrally connected by welding between the back surface 2b of the first abutting portion 2 and the surface 9a of the second abutting portion 9, and this pair of reinforcing portions 10 The second contact portion 9 is reinforced by the portions 10 and 10 so as to be maintained at a substantially right angle with respect to the first contact portion 2.

  As shown in FIG. 1, a circular first hole 4 is provided on the center line a of the first contact portion 2 in the vicinity of one end in the longitudinal direction of the first contact portion 2. One end portion in the longitudinal direction of the first contact portion 2 including the first hole 4 is configured as a hanging portion 3 to which the sling wire 23 is hooked.

  A pair of oval second holes 6, 6 are formed in the vicinity of the other end in the longitudinal direction of the first abutting portion 2 so as to be symmetric with respect to the center line a of the first abutting portion 2. Is provided in a state of being penetrated, and the heads of anchor bolts 20 placed on the side surface 18 of the concrete member 17 are inserted into the pair of second holes 6 and 6. By making the second hole 6 into an oval shape, the anchor bolt 20 can be driven into the concrete member 17 while avoiding the internal rebar within the range of the length of the second hole 6.

As shown in FIG. 8, the positional relationship between the first hole 4 and the second hole 6 of the first contact portion 2 is from the center 5 of the first hole 4 to the back surface 9 b (concrete member 17. L _{1 is} the distance to the upper surface 19), and the distance from the back surface 9 b of the second contact portion 9 (upper surface 19 of the concrete member 17) to the axis b of the anchor bolt 20 inserted into the second hole 6 is L. when a _2, L 1 _<like relationship L ₂ is satisfied, the position of the first hole 4 and the second hole 6 is set.

  In order to lift the rectangular parallelepiped concrete member 17 cut into a plurality of pieces using the suspension jig 1 of the present embodiment configured as described above, first, two opposing side surfaces 18 and 18 of the concrete member 17 are arranged. A pair of anchor bolts 20, 20 are attached to the first portion of the hanging jig 1 so as to be perpendicular to the respective side surfaces 18 at a position spaced apart from the upper surface 18 of the concrete member 17 by a predetermined distance in the center. The heads of the anchor bolts 20 are projected from the side surfaces 18 by a predetermined length by being driven at an interval corresponding to the interval between the pair of second holes 6 and 6 of the portion 2.

  Next, as shown in FIGS. 5 to 7, the hanging jig 1 is disposed on each of the two side surfaces 18, 18 of the concrete member 17, and the first abutting portion 2 of each hanging jig 1 is arranged. The back surface 2 b is brought into contact with each side surface 18 of the concrete member 17, the back surface 9 b of the second contact portion 9 is brought into contact with the upper surface 19 of the concrete member 17, and is inserted into each second hole 6 of the first contact portion 2. The heads of the anchor bolts 20 are inserted, nuts 21 are screwed onto the heads of the anchor bolts 20 protruding from the surface 2a of the first contact portion 2, and tightened with a predetermined torque. Is fixed to each side surface 18 of the concrete member 17.

  Next, the shackle 22 is attached to the suspension portion 3 of each suspension jig 1 using the first hole 4, and one end of the sling wire 23 is attached to the suspension portion 3 of each suspension jig 1 via the shackle 22. The other end of the slinging wire 23 is hooked on the hook of a lifting machine such as a crane truck.

  Then, by operating the lifting machine, the concrete member 17 is lifted through the sling wire 23 and the hanging jig 1, and the concrete member 17 is placed on a loading platform such as a dump truck. It can be transported from the site to a disposal site and crushed at the disposal site.

In the suspension jig 1 of the present embodiment configured as described above, the first contact portion 2 fixed to the side surface 18 of the concrete member 17 by the anchor bolt 20 is more than the upper surface 19 of the concrete member 17. A suspension part 3 is provided in the upper part, and a second contact part 9 is provided integrally on the back surface 2b side of the first contact part 2 so as to be substantially perpendicular to the first contact part 2, Since the hanger wire 23 is hooked on the hanging portion 3 of the contact portion 2, the moment around the hanging portion 3 when lifting the concrete member 17 (the moment around the point A in FIG. 8) is the upper surface of the concrete member 17. reaction force R ₁ acting second contact portion _9, T tension slinging wire 23 in Tsuten 5, the horizontal component force and T _H1, and the distance from Tsuten 5 to the point a and L ₁ from the distance from point a to _{R 1} is taken as _{L 3, T H1} · _L = _R 1 · _{L 3} becomes, so that the balance.

Accordingly, each anchor bolt 20, joined by only shearing force corresponding to the vertical direction component force TV ₁ tension T slinging wire 23, since no such force pulling the anchor bolts 20 (pulling force) is generated, It is possible to prevent the cone-like fracture from occurring in the concrete member 17.

  Further, since the pair of reinforcing portions 10 and 10 are integrally provided by welding between the back surface 2b of the first contact portion 2 and the front surface 9a of the second contact portion 9, the concrete member 17 is lifted. When they are overlapped, the suspension part 3 and the second contact part 9 of the first contact part 2 are deformed, and the position of the suspension part 3 (the suspension point 5) is shifted from the upper side in the vertical direction of the first contact part 2. There is no such thing, and a moment around the suspension portion 3 is generated, so that the anchor bolt 20 does not generate a pulling force (pulling force), and it is possible to prevent the concrete member 17 from being cone-shaped.

Furthermore, as shown in FIG. 8, from the center (hanging point 5) of the 1st hole 4 of the suspension part 3 of the 1st contact part 2 to the upper surface 19 of the concrete member 17 (the back surface 9b of the 2nd contact part 9). distance L _1, which are set smaller than the distance L ₂ of the upper surface 19 of the concrete member 17 (the back surface 9b of the second contact portion 9) to the axis b of the anchor bolt 20, slinging the Tsuten 5 the tension of the wire 23 T, the horizontal component force _{T H1,} the vertical component force _{T V1,} the horizontal component force of the force acting on the fixture hanging from the anchor bolt 20 is taken as _{T H2, T H1} · The relationship L ₁ = TH ₂ · L ₂ (the principle of the insulator) is established, and L ₁ <L ₂ , so that T _H2 <T _H1 . Thus, the first suspender third contact portion 2 is displaced in the horizontal direction for some reason, even if a horizontal component force T _H1, it is possible to reduce the T _H2 This leverage principle, T _The tensile force acting on the anchor bolt as a reaction force of _H2 can be reduced, and the occurrence of cone-like fracture in the concrete member can be prevented.

  9 and 10 show a second embodiment of the hanging jig according to the present invention. The hanging jig 1 is formed by bending an end portion of the first contact portion 2 (a portion above the joint portion of the second contact portion 9) at a predetermined angle. This is the same as that shown in the first embodiment.

  Even in the hanging jig 1 of the present embodiment, the same effects as those shown in the first embodiment can be obtained, and the bending angle of the end portion of the first abutting portion 2 can be suspended. The moment around the suspension point can be reduced more than that shown in the first embodiment by fitting the sling wire 23 to the portion 3 and adjusting the angle of the sling wire 23 when the concrete member 17 is lifted. Can do.

  FIG. 11 shows a third embodiment of the hanging jig according to the present invention. The hanging jig 1 has a ring 24 attached in advance to the first hole 4 of the hanging portion 3 of the first abutting portion 2, and a sling wire 23 is attached to the ring 24 via a shackle 22. Other configurations are the same as those shown in the first embodiment.

  And even if it exists in the hanging jig | tool 1 of this Embodiment, there exists the same effect as what is shown in the said 1st Embodiment, and also the 1st hole 4 of the hanging part 3 of the 1st contact part 2 is shown. Since the ring 24 is previously attached to the ring 24 and the sling wire 23 is attached to the ring 24 via the shack 22, the moment around the suspension point can be reduced more than that shown in the first embodiment.

  12 and 13 show a fourth embodiment of a hanging jig according to the present invention. The suspension jig 1 is provided in a state of penetrating a plurality of screw holes 11 so as to be evenly arranged over the entire length and width in the first contact portion 2, and the entire length and width are provided in the second contact portion 9. A plurality of screw holes 12 are provided so as to penetrate the screw holes 12 so as to be evenly arranged, and fastening screws 13 are screwed into the screw holes 11 and 12, respectively. This is the same as that shown in the first embodiment.

  Each screw hole 11 of the first contact portion 2 and each screw hole 12 of the second contact portion 9 are formed conically on the back surface 2b side of the first contact portion 2 and the back surface 9b side of the second contact portion 9. Has been. Each tightening screw 13 includes a hexagonal bolt-shaped screw body 14 and a truncated cone-shaped pedestal 15 that is integrally provided at the tip of the screw portion of the screw body 14. Further, a nut 16 is screwed onto the screw body 14, and the fastening of the fastening screw 13 is prevented by the nut 16. If there is no possibility that the fastening screw 13 is loosened, the nut 16 need not be provided.

  And even if it is in the suspension jig | tool of this Embodiment of the above structures, there exists an unevenness | corrugation on the side surface and upper surface of a concrete member other than having the same effect as what is shown in the said 1st Embodiment. Effective in some cases.

  That is, due to unevenness of the side surface 18 and the upper surface 19 of the concrete member 17, the back surface 2 b of the first contact portion 2 is brought into contact with the side surface 18 of the concrete portion 27, and the second contact portion is brought into contact with the upper surface 19 of the concrete member 17. 9, when the back surface 9 b of the first contact portion 2 is brought into contact with the back surface 2 b of the first contact portion 2 and the side surface 18 of the concrete member 17, and the back surface 9 b of the second contact portion 9 and the upper surface 19 of the concrete member 17 In the case where a gap is formed between them, the respective tightening screws 13 of the first abutting portion 2 are tightened, the base 15 at the tip thereof is abutted against the side surface 18 of the concrete member 17, and the second abutting Each fastening screw 13 of the portion 9 is fastened, and the base 15 at the tip thereof is brought into contact with the upper surface 19 of the concrete member 17, so that the first contact portion 2 is brought into contact with the side surface of the concrete member 17 via the fastening screw 13. 18 can be integrated, The second contact portion 9 through the tightening screw 13 can be integrated with the upper surface 19 of the concrete member 17.

  Therefore, when the concrete member 17 is lifted via the sling wire 23 and the hanging jig 1, the gap between the back surface 2 b of the first contact portion 2 and the side surface 18 of the concrete member 17, and the second contact The first contact portion 2 and the second contact portion 9 are not deformed by the presence of a gap between the back surface 9b of the portion 9 and the upper surface 19 of the concrete member 17, and the hanging portion 3 (hanging point 5). ) Can be kept above the first contact portion 2 in the vertical direction.

  FIG. 14 shows a fifth embodiment of the hanging jig according to the present invention. This hanging jig 1 has a substantially T-shape comprising an arm portion 7 extending in the lateral direction through the first contact portion 2 and a leg portion 8 provided so as to extend in the vertical direction integrally with the central portion of the arm portion 7. And the second contact portion 9 is integrally provided on the back surface side of the leg portion 8, and the other configurations are the same as those shown in the first embodiment.

  In the present embodiment, the distance between the pair of second holes 6 and 6 through which the head of the anchor bolt 20 is inserted is longer than the distance between the pair of second holes 6 and 6 in the first embodiment. Can do. Thereby, it can prevent that the range of the cone-shaped fracture centering on each anchor bolt 20 can overlap, and the proof stress with respect to the tensile force of each anchor bolt 20 can further be improved. In addition, the boundary portion between the arm portion 7 and the leg portion 8 is rounded to prevent cracks from occurring in that portion.

  And even if it is in the hanging jig 1 by this Embodiment, there exists an effect similar to what is shown in the said 1st Embodiment.

  In each of the embodiments, the first contact portion 2 and the second contact portion 9 and the reinforcing portion 10 between the first contact portion 2 and the second contact portion 9 are integrated by welding. However, these may be integrally connected by a screw fastening body such as a bolt.

  Moreover, in each said embodiment, although the 1st contact part 2 and the 2nd contact part 9 were formed and connected separately, the 1st contact part 2 and the 2nd contact part 9 were connected. You may form integrally by casting etc.

  Furthermore, in each said embodiment, although the suspension part 3 was comprised by the one end part of the longitudinal direction of the 1st contact part 2, the suspension part 3 is formed separately from the 1st contact part 2, and 1st You may comprise so that the suspension part 3 may be integrally connected to the one end part of the contact part 2 at the longitudinal direction by screw fastening bodies, such as welding and a volt | bolt.

  Furthermore, in the above description, the rectangular parallelepiped concrete member 17 whose upper surface and side surfaces are substantially perpendicular to each other is targeted, but other three-dimensional concrete members such as a columnar shape may be targeted for lifting.

  Furthermore, the hanging jig 1 may be configured by only the first abutting portion 2, and the hanging portion 27 may be disposed above the upper edge portion of the side surface of the concrete member 17. In that case, since the concrete member 17 having a solid shape whose upper surface and side surfaces are not substantially perpendicular (for example, a three-dimensional shape having protrusions or the like on the upper surface) can be targeted, the above-described insulator is also used in this configuration. By this principle, the tensile force acting on the anchor can be reduced.

DESCRIPTION OF SYMBOLS 1 Hanging jig | tool 2 1st contact part 2a Front surface 2b Back surface 3 Hanging part 4 1st hole 5 Hanging point 6 2nd hole 7 Arm part 8 Leg part
DESCRIPTION OF SYMBOLS 9 2nd contact part 9a Front surface 9b Back surface 10 Reinforcement part 11 Screw hole 12 Screw hole 13 Clamping screw 14 Screw main body 15 Base 16 Nut 17 Concrete member 18 Side surface 19 Upper surface 20 Anchor bolt 21 Nut 22 Shackle 23 Catch wire 24 Ring 25 Hanging jig 26 Base 27 Hanging part a Center line b Center axis

Claims (6)

A concrete member suspension jig having a side surface and an upper surface substantially perpendicular to the side surface ,
An arm portion provided so as to extend in a lateral direction and a leg portion provided so as to extend in a vertical direction in a central portion of the arm portion, and the back side of the arm portion and the leg portion is on a side surface of the concrete member. contact than said upper edge of the side surface of the upper end said concrete member leg provided so as to protrude upward, next to the arm portion by a plurality of anchor bolts which are Da設on a side surface of said concrete member A first abutting portion in which both ends of the direction are fixed to the side surface of the concrete member ;
A second contact portion that is integrally provided on the back surface of the first contact portion so that an angle formed between the first contact portion and the first contact portion is substantially a right angle;
A hanging jig, comprising: a hanging portion for hooking a hanging member provided at a portion above the upper edge portion of the side surface of the concrete member of the leg portion of the first contact portion. A concrete member suspension jig having a side surface and an upper surface substantially perpendicular to the side surface ,
It is provided so as to contact the side surface of the concrete member and protrude upward from the upper edge of the side surface, and is fixed to the side surface by a plurality of anchor bolts placed on the side surface of the concrete member. A first contact portion;
A second contact portion that is integrally provided on the back surface of the first contact portion so that an angle formed between the first contact portion and the first contact portion is substantially a right angle;
And a hanging portion for hooking the hanging member provided in the upper portion than the upper edge of the side surface of the concrete member of the first contact portion,
Fastening screws that can advance and retreat in the side surface direction of the concrete member and that can be in contact with the side surface of the concrete member are screwed to the first contact portion at a plurality of locations.
A suspension screw characterized in that a fastening screw capable of advancing and retreating in the upper surface direction of the concrete member and having a tip abutting on the upper surface of the concrete member is screwed to the second contact portion at a plurality of locations. jig. When the distance from the upper edge of the side surface of the concrete member to the center of the suspension is L1, and the distance from the upper edge of the side surface of the concrete member to the axis of the anchor bolt is L2, L1 < The suspension jig according to claim 1 or 2 , wherein a placement position of the suspension portion and the anchor bolt is set so that a relationship of L2 is established. The reinforcement part which maintains the angle which they make at a substantially right angle is integrally provided between the said 1st contact part and the said 2nd contact part, The any one of Claims 1-3 characterized by the above-mentioned . hanging jig according to paragraph 1.   5. The suspension according to claim 1, wherein an end portion of the first contact portion is bent at a predetermined angle, and the hanging portion is provided at the bent portion. jig.   The suspension jig according to any one of claims 1 to 5, wherein a ring-shaped member is attached in advance to the suspension part, and the suspension member is attached to the ring-shaped member.

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