JPH0712546Y2 - Lifting equipment for thin precast concrete beam members - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a suspender for suspending thin precast concrete beam members.

[0002]

2. Description of the Related Art A thin precast concrete beam member has a U-shaped cross section, and its upper part (opening) is weak against horizontal external force in the width direction. Therefore, in order to suspend it, a hook is embedded in concrete on both edges of the opening. And hang wires on the corresponding two hooks on both edges and hang them in parallel in the vertical direction, and also hang them at two places in the length direction of the beam member similarly.
It is usual to suspend the beam member while maintaining stability in the length direction.

For this reason, not only is it necessary to embed the hook in concrete, but also the hanger becomes complicated.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to provide a hoisting tool which can be lifted by a simple hoisting tool without embedding a hook in concrete.

[0005]

According to the present invention, there is provided (1) a stalap having two orthogonal surfaces, a lower surface of which faces both edges of a U-shaped opening of a thin precast concrete beam member, and a vertical surface of which protrudes. A pair of metal objects facing each other and having notches at the left and right ends of the upright surface are connected to each other with a space between compatible surfaces, and a saddle-shaped metal object having a wire connecting portion above (2) a cylinder passing through a center point. , A suspension for thin-walled precast concrete beam members, which is composed of locking pins that are roughly divided into four parts and one side of which is tapered, and which uses a protruding stalap of the beam member. It is unnecessary to embed the hook in the beam member and use the wire attached to the hook by directly attaching the suspending device and attaching one suspending device of the present invention to each of the two staplings in the length direction of the beam member. To Than it is.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the drawings.

FIG. 1 is an elevation view in which the lifting device of the present invention is mounted on a projecting strap, and FIG. 2 is a sectional view taken along the line A--A of FIG. In this embodiment, the saddle-shaped metal piece is manufactured by welding the upper connecting plate 5 and the both-end connecting metal piece 4 to a pair of grooved steels that are slightly longer than the width of the stuffed wrap, and keeps a space slightly larger than the diameter of the stuffed wrap 8. There is. . Notches 3 are provided at both upper left and right ends of the channel steel vertical surface 1, and a bent portion of the stalap 8 is exposed. The channel steel lower surface portion 2 faces the concrete surface. . A steel plate having a hole 6 into which the pin of the shackle is inserted is welded to the central portion of the channel steel vertical surface portion 1. In this embodiment, the channel steel is used as the metal object having two orthogonal surfaces, but L-shaped steel may be used, or two steel plates may be welded so as to be orthogonal to each other. Further, although a steel plate is used as the upper connecting plate, round steel may be used. Although the channel steel is used as the metal fitting at both ends for convenience, L-shaped steel or steel plate may be used. Instead of welding, bolts or screws may be used for connection. Further, the wire attachment portion may be formed by welding a single steel plate to the central portion of the upper connecting plate and providing holes for attaching wires or hooks at appropriate positions on the steel plate.

FIG. 3 is an elevational view of a locking pin for locking the lifting device of the present invention to a protruding strap, and FIG. 4 is a plan view thereof. The arcuate portion of the locking pin 7 needs to be in close contact with the bent portion of the stapling 8. Therefore, the curvature of the arcuate portion of the locking pin 7 is substantially the same as the curvature of the bent portion of the stapling 8. Since one side surface of the locking pin 7 is tapered, even if there is some error in the protruding height of the stapling, when the locking pin 7 is inserted into the bent portion of the stapling 8, the locking pin 7 Will be inserted into the taper corresponding to the protruding height of the stalap and will stop, the arc part of the locking pin 7 will be in close contact with the bent part of the stalap 8, and the bottom surfaces of both ends of the saddle-shaped metal object will be on the concrete surface. It will be in close contact.

At this time, the locking pin 7 is inserted into the bent portion of the stalap 8 in a form rotated by 90 degrees and stopped at a taper corresponding to the width of the stalap, thereby locking the locking pin 7.
The arcuate portion may be brought into close contact with the bent portion of the stirrup 8.

As shown in FIG. 2, the both-ends-connected metal fittings are connected to both ends of a pair of metal fittings having two surfaces orthogonal to each other while changing the left and right lengths. The concrete force applied to the tip of the long side of the metal fittings on both ends and the corner force of the tension of the wrap that is transmitted through the locking pin cause the horizontal suspension of the main suspension when the wire tension in the diagonal direction occurs in the suspension of the main suspension. Can resist the rotation of the tool. As a result, even if the wire tension in the diagonal direction is applied to the hanging device of the present invention, the stapling does not bend.

Although it is preferable to prepare one kind of lifting tool for a certain projection height and width of the stapling, the lifting tool of the present invention has the following modifications to the stapling projection height and width. Can be dealt with in this way. That is, the notch portion of the locking pin receiver is made slightly larger in the protruding direction or the width direction of the stalap, and is used as it is at the minimum protruding height or width of the stalap, and as the protruding height or width of the stalap becomes larger. , A thick steel piece may be inserted inside the locking pin.

In applying the hanging device of the present invention, it is preferable that the stapling is continuous or welded without any cuts in its protruding portion. If there is a break, when the suspension of the present invention is applied, there is a risk that the stalap will be deformed or the stalap will separate from the concrete.

[0013]

EFFECTS OF THE INVENTION By using the suspending tool of the present invention, the hook which has been conventionally used is not required, so that it is not necessary to embed the hook in the beam member and the production of the beam member is rationalized. In addition, the hanging device of the present invention has a simple structure, is easy to manufacture, and is easy to handle. Further, the beam member can be safely and reliably hung by using the hanging device of the present invention.

[Brief description of drawings]

FIG. 1 is an elevational view of a lifting device of the present invention.

2 is a sectional view taken along the line AA of FIG.

FIG. 3 is an elevation view of a locking pin of the present invention.

FIG. 4 is a side view of the locking pin of the present invention.

[Explanation of symbols]

1 ... Groove-shaped metal surface, 2 ... Groove-shaped metal lower surface, 3 ...
Notch part, 4 ...
..Shackle pin insertion holes, 7 ... Locking pins, 8
..Stapling, 9 ... Beam members

Claims (2)

[Scope of utility model registration request] (1) It has two orthogonal surfaces, the lower surface faces both edges of the U-shaped opening of the thin-walled precast concrete beam member, and the vertical surfaces face the protruding stabs, and the upper left and right ends of the vertical surface. A pair of metal fittings having a notch portion are connected to each other while keeping a space of compatible surfaces, and a saddle-shaped metal fitting having a wire connecting portion at the upper side and (2) a cylinder is passed through a center point to be substantially divided into four parts. A suspender for thin-walled precast concrete beam members, which is composed of a locking pin that is tapered on one side 2. A suspender for a thin precast concrete beam member according to claim 1, wherein a pair of metal fittings connected at both ends is connected to both ends of a pair of metal fittings having two surfaces which intersect at right angles.