JPH083547Y2 - Suspension tool for deck plate - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deck plate suspending tool used for suspending a ceiling, a duct, and other members on the lower surface of a deck plate used in a building.

[0002]

2. Description of the Related Art When constructing a concrete slab, a so-called deck plate in which a metal plate is folded in a concavo-convex shape so as to have a continuous trapezoid is horizontally installed, and concrete is laid on the so-called deck plate. The method of making it into a concrete slab is widely used.

When piping or interior ceiling is mounted on a slab using such a deck plate, a suspending tool is fixed to the lower surface of the deck plate from below, and a rod is added to the suspending tool to hang the rod. The necessary mounting members are attached.

The above-mentioned conventional lifting tool is, for example, a real fair 2-8.
There are those disclosed in Japanese Patent Nos. 965 and 8966. This is a deck plate 1 as shown in FIG.
Hold a pair of holding pieces 3 and 3 so as to sandwich a rib 2 having a triangular cross-section protruding from the both sides on the lower surface of the base, stack bases 3a and 3a of the holding pieces 3 and 3 and bolt 4 from above. The joint nut 5 having a long axial length is screwed into the screw shaft portion of the bolt 4 projecting downward through the base portion 3a, the holding pieces 3 and 3 are engaged with the ribs 2, and then the joint nut 5 is rotated and tightened. As a result, the head portions 4a of the bolts 4 and the joint nuts 5 are made to approach the base portions 3a and 3a of the sandwiching pieces 3 and 3, and the sandwiching pieces 3 and 3 are closed and fixed to the rib 2.

Then, the threaded portion at the upper end of the rod 6 is screwed into the lower half of the Joetsu joint nut 5, and the rod 6 is hung and a necessary mounting member is attached thereto.

[0006]

However, in the above-described conventional lifting device, it is necessary to tighten the joint nut 5 when attaching the lifting device to the ribs 2 on the lower surface of the deck plate 1, so the work is performed at a high position. Since it is necessary to work on a scaffolding such as a step or a temporary stand, it is not easy to attach the lifting tool. In particular, mounting a ceiling requires a large number of suspending tools, making it even more difficult and inevitably low work efficiency. In addition, until the joint nut 5 is tightened, it is necessary to hold the state in which the holding pieces 3 and 3 are fitted in the rib 2 with one hand and to rotate the joint nut 5 with the other hand to tighten the joint nut 5. Since it is necessary to firmly fix it with a tool for tightening, the work is made more difficult in combination with the work at a high place.

In view of the above, the present invention has been made in view of the above, by rotating a rod from below the rib of the deck plate, the rod can be clamped by the rib, and there is no scaffolding during work, and the rod can be mounted with high efficiency. The purpose of the present invention is to provide a lifting tool for use.

[0008]

Means for Solving the Problems As a means for solving the problems of the above-mentioned conventional techniques, the present invention provides a lifting device body having a top plate, left and right side plates, and a lower edge formed into a substantially C-shaped cross section. And a pair of holding pieces that are pivotally supported at the respective ends of the left and right side plates of the lifting device body and can engage with ribs that hang down on the lower surface of the deck plate, and are located in the lifting device body between the side plates. A screw member at the upper end of the rod, which has a nut member that is non-rotatably incorporated in the suspender body so that a screw hole is formed so as to extend across the bases of the holding pieces and exposed from the space between the bases to the lower surface. The base of the holding piece is pushed down by pushing the nut member by screwing the portion into the nut member, and the tip of the holding piece is closed. A spring member for urging in the closing direction is additionally provided.

[0009]

[Operation] A screw portion of the upper end of the rod is slightly screwed from below into a screw hole of a nut member built in the lifting device main body, and the rib is held toward the rib on the lower surface of the deck plate. When you push up the lifting tool so that it is sandwiched, the tips of the left and right lifting pieces fit into the ribs, and then when you rotate the rod, the upper end of the rod hits the underside of the top plate of the lifting tool body, and then rotate the rod. As a result, the nut member is called and simultaneously presses the base portions of the left and right holding pieces, and the tips of the holding pieces are strongly pressed against the side surfaces of the ribs to form a fixed bear. Simultaneously with this fixing, the rod is also fixed and hung down, and a necessary mounting member is attached to the lower portion of this rod to be used for suspending a ceiling, a duct or the like.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the embodiments shown in the drawings. FIG. 1 is an external perspective view of an embodiment of a lifting device according to the present invention, FIG. 2 is a front view, FIG. 3 is a plan view, and FIG. 4 is a side view.

The suspension main body 7 has a top plate 8, left and right side plates 9, 9 and lower edges 10, 10 that are bent inward at the bottoms of the side plates 9, 9 and is formed in a substantially C-shaped cross section. Which is formed by bending a metal plate.

The pair of right and left holding pieces 11, 11 have a substantially L-shaped front shape. If only one of them is described, the base 12 is between the lower ends of the two pieces 11a, 11a having the substantially L shape. And the width thereof is set to a size that can be fitted between the side plates 9 of the lifting tool body 7. Then, the parts 11a, 11a of the part rising from the base 12 are attached to the side plates 9, 9 of the lifting device main body 7 by a pin 13 so as to be swingable downward.

A pin 1 for pivotally supporting a pair of holding pieces 11, 11.
A nut member 14 is fitted between 3 and 13, and two sides of the hexagonal peripheral surface of the nut member 14 that correspond to each other on the diametric line correspond to the inside of the pieces 11a and 11a of the holding pieces 11 and 11. Two ridge portions facing the side surface and corresponding to each other on the diametrical line are faced to the side surfaces of the pins 13 and 13, whereby the nut member 14 is enclosed in the suspending tool body 7 so as not to rotate and to escape. Has been done. In this case, the nut member 1
The corresponding two sides of 4 may be directly opposed to the pins 13 and 13.

The lower part of the screw hole 14a of the nut member 14 faces each other of the base parts 12, 12 of the holding pieces 11, 11 so that the lower part of the screw hole 14a faces the lower edges 10, 10 of the lower surface of the lifting device main body 7. Notches 15 and 15 are formed at the ends.

A spring member 16 composed of a wire spring or a leaf spring is supported on the lower edges 10 and 10 of the suspension main body 7, and both ends of the spring member 16 are engaged with the lower surfaces of the holding pieces 11 and 11. Combined with the holding pieces 11, 11 at the tips 11b, 1
1b is normally urged in the closing direction. When the spring member 16 is composed of a leaf spring, a hole for inserting the rod 17 is formed at the central position.

FIGS. 6 to 9 show a modification of the spring member 16, and as shown in FIG.
spring pieces 19 and 19 are erected at both ends of a leaf spring 18 having a width that can be accommodated between a and 11a and a length corresponding to the inner dimension between the pins 13 and 13.
The upper ends 19a, 19a of the are bent outward and abut against the lower surface of the end of the top plate 8 of the lifting device main body 7, and the leaf spring 18 has a hole 18a through which the rod 17 is inserted.

The leaf spring 18 includes a pair of left and right holding pieces 11,
When the nut members 14 are placed on the bases 12 and 12 of the spring 11, and the nut members 14 are placed on the bases 12, the upper ends 19a and 19a of the spring pieces 19 and 19 are separated when the holding pieces 11 and 11 are spaced from each other.
Is relatively pushed by the lower surface of the top plate 8 of the lifting device main body 7, whereby the clamping pieces 11, 11 are urged in the closing direction. 6 to 9, members common to those in FIGS. 1 to 5 are given the same reference numerals, and description thereof will be omitted.

10 (A) and 10 (B) show a modification of the spring member 16 in FIG. 1, which is a case where a leaf spring is used instead of the wire spring, and the leaf springs 16 'and 16 "are suspended. Lower edges 10 and 10 of the holding body 7 and the base 1 of the holding pieces 11 and 11.
Although it is assembled so as to be sandwiched between 2 and 12, protrusions 20 and 20 that engage with the end portions of the lower edges 10 and 10 of the lifting tool body 7 are formed in order to prevent falling off due to vibration during transportation. It is a thing. Reference numeral 21 is a hole through which the rod 17 passes.

As a result, the lower edges 10, 10 of the lifting tool body 7 are located between the protrusions 20, 20, so that the leaf springs 16 ', 1
The 6 "never falls out.

The rod 17 has a required length, and a screw portion 17a which can be screwed into the screw hole 14a of the nut member 14 is formed at least from the upper end to a required length. The mounting member is mounted.

Next, the operation of the above embodiment will be described. When attaching the lifting tool to the ribs 2 on the lower surface of the deck plate 1, slightly screw the threaded portion 17a at the upper end of the rod 17 into the screw hole 14a of the nut member 14 incorporated in the lifting tool body 7 from the lower surface side. Inserting the rod 17, holding the rod 17 toward the rib 2 on the lower surface of the deck plate 1 and pushing up the lifting tool so that the holding pieces 11 and 11 sandwich the rib 2, the tips 11b of the left and right holding pieces 11 and 11 are held. , 11b follow the rib 2 and open against the bias of the spring member 16 (see FIG.
5A and 5B, when the rib 2 is fitted, the spring 2 urges the rib 2 to close, and the rib 2 is temporarily attached. In this case, if the ribs 2 are fitted from diagonally below, the gripping pieces 11 from the acute angled portion on one side of the lower end of the ribs 2,
Since 11 is fitted, it is easy to fit.

Then, when the rod 17 is rotated, the upper end of the rod 17 penetrates the nut member 14 and hits the lower surface of the top plate 8 of the lifting device main body 7, and the rod member 17 is further rotated to attract the nut member 14. Left and right holding pieces 11,1
The opposite end portions of the base portions 12, 12 of the first unit are simultaneously pushed by the nut member 14, and the holding pieces 11, 11 are forcibly rotated in the closing direction, and the tips 11b, 11b thereof are strongly fixed to the side surface of the rib 2 to firmly (Fig. 5 (C)). At the same time, the rod 17 is also fixed, and necessary members are attached to the lower portion of the rod 17 to be used for suspending the ceiling or the like.

In the case of the embodiment shown in FIGS. 6 to 9, the rib 2 can be attached in the same manner as in the above embodiment.

If a rubber plate is attached to the upper surface of the top plate 8 of the lifting device main body 7, it can be attached without rattling when tightened by the rod 17. Further, the shapes of the tips 11b, 11b of the holding pieces 11, 11 can be appropriately selected according to the shape of the ribs 2 of the deck plate 1. Further, according to the above-described embodiment, the spring member 16 is provided so that the spring member 16 can be temporarily attached to the rib 2. However, when the temporary attachment is not necessary, the spring member 16 may be omitted. Further, it goes without saying that various types of deck plates 1 can be used. Further, the shape and structure of the spring member 16 can be arbitrarily changed.

[0025]

As described above, according to the present invention, it is not necessary to use a nut having a large axial length that has been conventionally used, and a rod is applied from below the deck plate to the rib of the deck plate, Since the lifting tool can be fixed to the rib by rotating the rod as it is, it is not necessary to use a step or a scaffold, and the lifting tool can be attached safely and efficiently. In addition, since the nut member is enclosed in the main body of the lifting tool, there is no separation of the parts and the parts can be handled as an integral part, which is easy to handle and there is no loss of parts. Furthermore, since the nut is built into the body of the lifting tool, there are no protrusions such as bolts, it is compact, and the parts price is low, so it can be obtained at low cost, and it can be provided at low cost. ,
It has various excellent effects compared to the conventional ones.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a suspension for a deck plate according to the present invention.

FIG. 2 is a front view of the same.

FIG. 3 is a plan view of the same.

FIG. 4 is a side view of the same.

5 (A) to 5 (C) are explanatory views showing a mounting process.

FIG. 6 is a front view showing a modified example of the hanging tool for a deck plate according to the present invention.

FIG. 7 is a plan view of the same.

FIG. 8 is a side view of the same.

9 is a perspective view of a spring member used in FIG.

10A and 10B are perspective views showing a modified example of the spring member in FIG.

FIG. 11 is a front view showing a conventional hanging tool for deck plates.

[Explanation of symbols]

 1 Deck Plate 2 Rib 3,11 Clamping Piece 6,17 Rod 7 Lifting Tool Main Body 8 Top Plate 9 Side Plate 10 Lower Edge 12 Base 13 Pin 14 Nut Member 16 Spring Member

Claims (2)

[Scope of utility model registration request] 1. A cross section of a top plate, left and right side plates, and a lower edge is approximately C.
Between the side plates, a hanging body formed in a shape, a pair of holding pieces that are pivotally supported at each end of the left and right side plates of the hanging body and that can engage with ribs that hang down on the lower surface of the deck plate, And a nut member that is non-rotatably incorporated in the lifting body so that a screw hole is exposed from the space between the bases so as to extend between the bases of the holding pieces located inside the lifting body. The deck plate characterized in that the screw member at the upper end of the rod is screwed into the nut member to bring in the nut member and push down the base of the holding piece so that the tip of the holding piece can be closed. Lifting device. 2. A cross section of a top plate, left and right side plates, and a lower edge is substantially C.
Between the side plates, a lifting device body formed in a shape, a pair of holding pieces that are pivotally supported by each end of the left and right side plates of the lifting device body and that can engage with ribs that hang down on the lower surface of the deck plate, A nut member non-rotatably built in the lifting body so that a screw hole is exposed across the bases of the holding pieces located in the lifting body so as to be exposed on the lower surface from between the bases; And a spring member that is supported by the lifting device main body and is attached in the direction in which the tip of the holding piece is closed, and the threaded portion of the upper end of the rod is screwed into the nut member to bring in the nut member and hold the holding piece. The hanging tool for deck plates, characterized in that the base of the is pushed down so that the tip of the holding piece can be closed.