JPH059996A - Metal hanger deck plate floor - Google Patents

Abstract

PURPOSE:To firmly install a metal hanger on the bottom face of a floor slab to hang a ceiling, facility pipings and others. CONSTITUTION:A metal hanger main body 12 has a nut 13 on a bottom part 12a and an engagement part 12g projecting to the left side. This engagement part 12g is engaged with a groove part 1c of an inclined web face 1b of a deck plate 1. An engagement member 14 with an inclined face part 14d is installed on the metal hanger main body 12 free to move sideways. When a hanging bolt screwed in the nut 13 is turned, the hanging bolt rises, makes contact with the inclined face part 14d and pushes the engagement member 14 out to the right, and its top end part 14a locked with the groove part 1c on the other side of the deck plate 1. When the hanging bolt 18 is further turned and raised, it strongly hits the bottom face of the deck plate 1, the engagement part 12g on the left the metal hanger main body 12 and the top end part 14a on the right of the engagement member 14 are firmly engaged with the groove part 1c, and a metal hanger 11 is firmly fixed on the bottom face of a floor slab 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION This invention relates to a case where concrete is placed on a deck plate to form a floor slab,
The present invention relates to a hanging metal fitting attached to the lower surface of a floor slab to support a ceiling, equipment pipes, ducts, etc. provided in the space below the floor slab (deck plate floor).

[0002]

2. Description of the Related Art When installing pipes, ducts, etc. in the lower space of a floor slab formed by placing concrete on a deck plate as described above, a drill is used at a predetermined position on the deck plate before placing concrete. A method is generally adopted in which a hole is made, an insert is attached to the hole, and after the placed concrete is hardened, a hanging bolt is screwed into the insert and a pipe, a duct, etc. are attached to the hanging bolt.

Further, as shown in FIG. 7, for example, a mountain portion 1a
1 formed by bending the inclined web surfaces 1b on both sides of the
In the case of the floor slab 10 formed by using the deck plate 1 having c and having a dovetail-shaped concave portion (concave viewed from the lower surface side) 1e in the center of the valley portion 1d, as shown in FIG. The method of fitting the hanging metal fitting 2 into the dovetail-shaped recess 1e is adopted (see Japanese Utility Model Laid-Open No. 63-138038). The hanging metal fitting 2 has hook-shaped locking portions 5 on the upper ends of the left and right side portions 4 of the locking metal fitting 3, a nut 6 is fixed to the lower surface portion, and a hanging bolt 7 is screwed onto the nut 6. It is a structure. In this suspension fitting 2, when the suspension bolt 7 descends and is not in contact with the left and right side portions 4, 4, the space between the left and right side portions 4, 4 is narrowly closed, and therefore the hook-shaped locking portion at the upper end. The interval between 5 and 5 is also narrowly closed, and the hook-shaped locking portion 5 of the locking metal fitting 3 can be inserted into the dovetail-shaped recess 1e from below. Then, when the suspension bolt 7 screwed to the nut 6 is turned up and pushed up, the left and right side portions 4, 4 are spread left and right by the suspension bolt 7, and the hook-shaped engaging portions 5, 5 at the upper end are left and right. And is fitted into the blind portion of the dovetail recess 1e as shown in the drawing. As a result, the hanging metal fitting 2 is attached to the lower surface of the floor slab 10.

[0004]

In the above method of drilling holes in the deck plate and attaching the inserts in advance, it is necessary that the positions of the pipes and ducts are determined before the concrete is placed. However, the facility plan is often undecided or changed at a later date, and it becomes necessary to install suspension bolts at positions without inserts after the floor slab is completed. In such a case, it is necessary to re-drill a hole and attach a hole-in anchor, and then attach a suspension bolt to this, but the work of attaching the suspension bolt after completion of the floor slab is complicated, and the construction cost is extremely high.

On the other hand, the method of fitting the hook-shaped engaging portion 5 of the engaging metal fitting 3 into the dovetail-shaped concave portion 1e of the deck plate 1 shown in FIG. 8 can be attached to any place after the floor slab is completed. Also, because the installation work is easy, it is excellent in terms of workability and cost when supporting a relatively lightweight ceiling, etc., but is not strong enough to support heavy objects such as equipment pipes and ducts. There is a problem of doing.

The present invention has been made in view of the above circumstances, and provides a hanging metal fitting that can be attached to any place after the floor slab is completed and can be used for supporting heavy objects such as equipment piping and ducts. The purpose is to do.

[0007]

A hanging metal fitting of the present invention for solving the above-mentioned problems is a hanging metal fitting to be attached to the lower surface of a deck plate floor, which has a screw hole portion at the bottom and one of the left and right ends. A metal fitting body having an engaging portion that projects outward in the left-right direction, and the engaging portion of the metal fitting body that is movable in the left-right direction at a height position substantially the same as the engaging portion and has a tip end side of the metal fitting body. The engaging member, which is attached so as to project outward in the left-right direction from the end on the opposite side, and the engaging member having the inclined surface portion on the rear end side, is screwed into the screw hole portion of the metal fitting body, is screwed, and ascended. A hanging bolt for moving the engaging member leftward or rightward by contacting and pushing away the inclined surface portion of the engaging member.

According to a second aspect of the present invention, the metal fitting body according to the first aspect includes a bottom plate provided with the screw hole portion and two side plates facing each other and rising from both side edges of the bottom plate in a direction orthogonal to the left and right direction of the metal fitting body. It is characterized in that the both side plates are provided with a step portion such that the upper facing interval is wide and the lower facing interval is narrow, and the engaging member is provided on the metal fitting body so as to ride on the step part.

According to a third aspect of the present invention, the engaging member according to the first aspect includes a horizontal portion having a groove-shaped cross section, and a leaf spring portion integrally formed on the rear end side of the horizontal portion and bent in a dogleg shape. Equipped with
It is characterized in that the lower portion of the leaf spring portion having the "U" shape is the inclined surface portion.

[0010]

[Operation] When the hanging metal fitting having the above structure is attached to the lower surface of the floor slab, the hanging metal fitting is pushed up from the lower position of the mountain portion of the deck plate (a recess when viewed from the lower surface side of the floor slab).
The engaging part of the metal fitting body and the tip of the engaging member are respectively positioned in the grooves of the left and right inclined web surfaces of the deck plate (in this case, one is fitted). Then, when the suspension bolt screwed into the screw hole is turned to raise the suspension bolt, the upper end of the suspension bolt pushes the inclined surface portion of the engagement member and pushes the engagement member to the right or left, The engaging portion of the metal fitting body and the tip of the engaging member are fitted in the left and right groove portions of the deck plate. When the hanging bolt is further raised, the upper end of the hanging bolt hits the lower surface of the deck plate. When the hanging bolt is further screwed up and the lower surface of the deck plate is pushed up, the reaction force of the pushing force of the hanging bolt causes the engaging portion of the metal fitting body and The tip portion of the engaging member strongly engages with the groove portion of the deck plate. In this way, the hanging bracket is firmly attached to the deck plate floor.

In the second aspect, the stepped portion formed on the side plate of the metal fitting body serves as a guide for the movement of the engaging member.

In the third aspect, the inclined surface portion formed as the lower portion of the leaf spring portion has elasticity. Therefore, when the hanging bolt is raised, the engaging member is elastically pressed rightward or leftward. Therefore, even if the hanging metal fitting is not manufactured with strict dimensional accuracy, and even if there is some variation in the distance between the left and right groove portions of the deck plate, the engaging portion of the metal fitting body and the tip of the engaging member are left and right. Can be fitted tightly into the groove of the.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. The hanging metal fitting of the embodiment is the same as that shown in FIG.
It is a hanging metal fitting attached to the lower surface of the floor slab 10. That is, the deck plate 1 has a groove portion 1c formed by bending on the inclined web surfaces 1b on both sides of the mountain portion 1a, and has a dovetail-shaped recess (concave viewed from the lower surface side) 1e in the center of the valley 1d. The floor slab 10 is a synthetic floor board formed by placing concrete on the deck plate 1. FIG. 1 is a front view of a hanging metal fitting 11 according to an embodiment of the present invention, and FIG. 2 is a right side view of FIG.
The first metal fitting body 12 includes a bottom plate 12a, and two side plates 12 that stand upright from both side edges of the bottom plate 12a in a direction orthogonal to the left and right direction of the metal fitting body (left and right direction in FIG. 1).
It has a tubular structure having b and an upper plate 12c when viewed from the left and right direction, and is provided with an engaging portion 12g protruding leftward at the end portion on the left side (left side in FIG. 1) when viewed from the front. . The metal fitting body 12 of this embodiment is bilaterally symmetric, and the right end 12h thereof also has a shape protruding like the engaging portion 12g.
Further, in the metal fitting body 12, a hole 12e is formed in the center of the bottom plate 12a for passing a hanging bolt 18 that supports a ceiling, equipment piping, ducts, etc., and the hanging bolt 18 is screwed into the hole 12e. The nut 13 for welding is fixed by welding. In addition, the suspension bolt 1 is provided at the center of the upper plate 12c.
It is provided with a hole 12d through which 8 is inserted. Further, as shown in FIG. 2, the both side plates 12b of the metal fitting body 12 have a step portion 1 having a wide upper facing gap and a narrow lower facing gap.
2f is formed.

Reference numeral 14 is an engaging member which engages with one groove portion 1c of the deck plate 1 as will be described later. As shown in the perspective view of FIG. A cross-section having an engaging portion 14a for mating is formed into a groove-shaped horizontal portion 14b and a dogleg-shaped leaf spring portion 14c integrally formed at the rear end side of the horizontal portion 14b. Step 12 formed on the side plate 12b of the main body 12
It is provided so as to be able to move in the left-right direction while riding on f. The lower portion of the "U" shaped leaf spring portion 14c is an inclined surface portion 14b with which the upper end of the hanging bolt 18 contacts.

When the above-mentioned hanging metal fitting 11 is attached to the lower surface of the floor sludge 10 shown in FIG. 7, it is carried out as follows. As shown in FIG. 3, the hanging metal fitting 11 is lifted in a lower position of the mountain portion 1a of the deck plate 1 while slightly tilted so that the right side in FIG. 3 is up (the engaging member 14 side is up), The right end 12h of 12 is fitted into the groove 14c of the right inclined web surface 1b of the deck plate 1, and then the left side is lifted to make the metal fitting body 12 horizontal and the left end engaging portion 12g of the left inclined web surface 1b. Fit into the groove 1c. In this case, the engaging member 14 does not project from the metal fitting body 12, and the upper end of the hanging bolt 18 screwed into the nut 13 stops the engaging member 14 from sliding down. In this state, turn the suspension bolt 18 to
8, the upper end of the hanging bolt 18 pushes away the inclined surface portion 14d of the leaf spring portion 14c of the engaging member 14 to move the engaging member 14 to the right, and as shown in FIG. The engaging portion 14 a of 14 begins to project from the right end of the metal fitting body 12. When the hanging bolt 18 is further rotated and lifted, the hanging bolt 18 pushes the engaging member 14 by the outer diameter of the bolt, whereby the engaging portion 12g of the metal fitting body 12 and the engaging portion 14a of the engaging member 14 respectively. The left and right groove portions 14c of the deck plate 1 are tightly fitted (see FIG. 5). In this case, since the engaging member 14 is elastically pressed by the elasticity of the leaf spring portion 14c, there is some variation in the interval between the left and right groove portions 1c even if the hanging metal fitting 11 is not manufactured with strict dimensional accuracy. Even so, the left and right engaging portions 12g and 14a of the hanging metal fitting 11 are tightly fitted in the left and right grooves 1c.
When the suspension bolt 18 is further rotated and lifted, the upper end of the suspension bolt 18 contacts the lower surface of the deck plate 1 as shown in FIG. 5, and the suspension bolt 18 is further strongly screwed up and the lower surface of the deck plate 1 is pushed up. Bolt 1
The reaction force against the thrust force of 8 causes the left and right engaging portions of the hanging metal fitting 11 (the engaging portion 12g of the metal fitting body 12 and the engaging member 1).
The four engaging portions 14a) are strongly pressed to the groove portions 1c, respectively, so that the hanging metal fitting 11 is firmly attached to the floor slab 10.

In the embodiment, the nut 13 is welded and fixed to the bottom plate 12a of the metal fitting body 12 as a screw hole provided in the metal fitting body 12, but the invention is not limited to this. For example, a female screw may be cut in the burr portion of the hole formed in the bottom plate 12a so as to form a burr on the periphery to form a screw hole portion.

Further, in the embodiment, the dog-legged leaf spring portion 14c is formed on the rear end side of the engaging member 14, and the lower portion of the dog-legged leaf spring portion 14c is formed as the inclined surface portion 14d. However, even if the inclined surface part does not have elasticity, the hanging bolt 18
Since it is possible to push the inclined surface portion away and to make the engaging member protrude rightward and fit into the groove portion 1c, it is not always necessary to give elasticity to the inclined surface portion.

Further, the shape of the engaging member 14 is not limited to the groove type cross section as in the embodiment, but may be a square shape or other shapes.

Further, the step portion 12f is formed on the side plate 12b in order to hold the engaging member 14 so as to be movable in the left-right direction, but the engaging member 14 can be moved to, for example, a flat side plate without forming a step. The holding bracket may be fixed by welding.

Further, although the metal fitting body has a symmetrical shape in the embodiment, it does not necessarily have to be symmetrical. In short, the metal fitting body 12 is strong enough to withstand the load when suspending heavy objects such as equipment pipes, and the nut 13
Etc. has a screw hole portion in the center, has an engaging portion that engages with the groove portion 1c of the deck plate 1 at one end in the left-right direction, and can movably hold an engaging member that fits into the other groove portion of the deck plate. Anything will do. Further, the position of the nut 13, that is, the position of the hanging bolt 18 need not be exactly in the center of the metal fitting body 12.

Further, the sectional shape of the deck plate is not limited to that of the embodiment. In short, the metal fitting body 1
It suffices that a groove is formed that can engage with the second engaging portion 12g and the engaging portion 4a of the engaging member 14.

[0022]

According to the present invention, a metal fitting body having a screw hole portion at the bottom and an engaging portion at either one of the left and right ends,
The metal fitting body is provided so as to be movable in the left-right direction, and is provided with an engaging member having an inclined surface portion on the rear end side and a hanging bolt screwed into the screw hole portion of the metal fitting body. When attaching the hanging metal fitting of the present invention to a floor slab using a deck plate having a cross-sectional shape having grooves on the left and right inclined web surfaces of the mountain portion, it can be attached so as to engage with the groove portion of the deck plate. Therefore, it is possible to secure sufficient strength for the mounting part on the floor slab side, and it is also easy to increase the strength of the hanging metal fittings, making it possible to use it for supporting heavy objects such as equipment pipes and ducts. Since this hanging metal fitting can be attached to any place after the floor slab is completed, the workability is good.

[Brief description of drawings]

FIG. 1 is a front view of a hanging metal fitting showing an embodiment of the present invention.

FIG. 2 is a right side view of FIG.

FIG. 3 is a diagram for explaining a procedure for attaching the hanging metal fitting to the lower surface of the floor slab, showing a state in the middle of attachment.

FIG. 4 is a view for explaining how to similarly attach the suspension fitting to the lower surface of the floor slab, and is a view of a state immediately before engaging the tip end portion of the engaging member with the groove portion of the deck plate.

FIG. 5 is a view for explaining how to similarly attach the hanging metal fittings to the lower surface of the floor slab, and is a view showing a completed attachment state.

FIG. 6 is a perspective view showing details of an engaging member of the hanging fitting.

FIG. 7 is a cross-sectional view of a floor slab to which the hanging metal fitting of one embodiment of the present invention is attached.

FIG. 8 is a front view of a conventional hanging fitting.

[Explanation of symbols]

1 deck plate 1a Yamabe 1b Inclined web surface 1c groove 1d Tanibe 11 hanging bracket 12 metal fittings 12a Bottom plate (bottom part) 12b side plate 12d, 12e holes 12f step 12g engaging part 13 Nut (screw hole) 14 Engagement member 14a Engagement part (tip part) 14b Horizontal part 14c Leaf spring part 14d inclined surface 18 hanging bolt

Claims (3)

[Claims] 1. A hanging metal fitting to be attached to the lower surface of a deck plate floor, which has a screw hole portion at the bottom and an engaging portion protruding outward in the left-right direction at either one of the left and right ends. Attached to the metal fitting body so that it can move in the left-right direction at a position almost the same as the engaging portion, and the tip side can project outward in the left-right direction from the end of the metal fitting body opposite to the engaging portion. By engaging the engaging member having the inclined surface portion on the rear end side with the threaded hole portion of the metal fitting body, and pushing the screwed member into contact with the inclined surface portion of the engaging member when pushed up, A hanging fixture for a deck plate floor, comprising: a hanging bolt for moving the engaging member leftward or rightward. 2. The metal fitting body has a bottom plate provided with the screw hole portion, and two side plates standing upright from both side edges of the bottom plate in a direction orthogonal to the left and right direction of the metal fitting body, and facing each other.
2. The both side plates are provided with a step portion such that an upper facing interval is wide and a lower facing interval is narrow, and the engaging member is provided on the metal fitting body so as to ride on the step part. Hanging metal fittings on the deck plate floor. 3. The engaging member includes a horizontal portion having a groove-shaped cross section and a leaf spring portion integrally formed on the rear end side of the horizontal portion and bent in a dogleg shape. The hanging metal fitting for a deck plate floor according to claim 1, wherein a lower portion of the "-shaped leaf spring portion is the inclined surface portion.