JPH03216489A - Hanging jig for concrete plate - Google Patents

Abstract

PURPOSE:To safely and surely hold a concrete plate by tightening tightening metal fixtures, provided halfway a tensile member 4, after holding and setting the concrete plate between a pair of holding members. CONSTITUTION:A concrete plate 5 is interposed and set from the above between holding members 2, 2 in a condition that tightening metal fixtures 15 are loosened. Thereafter, cushion rubber 24, provided in the holding member 2, is firmly pressed to a side end surface 27 in both right and left sides of the concrete plate 5 by turning the tightening metal fixtures downward to be only tightened and by pulling a tensile member 4, that is, the first and second members 12, 13 each other, and the concrete plate 5 is held by a hanging jig 1, suspended and carried by a crane or the like. When the concrete plate 5 is desired to be removed from the hanging jig 1, it is only required that the tightening metal fixtures 15 are turned upward to return to an untightening condition, and in both cases of mounting/removing the concrete plate 5, very simple and prompt workability can be realized.

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a lifting jig for concrete plates, which makes it possible to easily and quickly lift concrete plates having a certain shape. It is.

(Conventional technology) When constructing a steel structure that has already been assembled by transporting standardized concrete plates (for example, ALC slabs) into a certain shape to be used as flooring or ceiling materials, it is necessary to install concrete plates that have been installed on site in advance. It is common to use a climbing crane or mobile crane to lift the concrete plate and set it in a predetermined position. Techniques used include making a hole in the peripheral edge of the i-top plate in advance, inserting a bottle into the hole, and hanging the bottle by hooking a wire to it.

(Problem to be solved by the invention) However, when the wire is directly wrapped around the concrete plate, it is not only extremely unstable and dangerous when lifted, but also a concrete plate with weak strength such as an ALC floor slab. In many cases, the wire was tightened and the peripheral edge was chipped and damaged.

In addition, although such inconveniences can be avoided when hoisting via pins, it is very troublesome to do the work as the pins must be attached and detached and the pins and wires must be connected and disconnected repeatedly. Ta.

The present invention was made in view of these circumstances, and its purpose is to safely and reliably install concrete plates such as ALC floor slabs, despite having a very simple and lightweight structure. To provide a lifting jig for a concrete plate which can be clamped and provides extremely quick workability.

(Means for Solving the Problems) In order to achieve the above object, the following technical measures were taken in the present invention.

That is, the present invention consists of a pair of clamping members 2, 2 arranged in parallel on the left and right.
, a connecting member 3 erected upward from the member 2.2 and connecting the clamping members 2, 2 to each other, and the clamping member 2.
, and a tension member 4 installed perpendicularly to the longitudinal direction between the tension member 4 and the tension member 4, which is divided midway in the longitudinal direction and consists of two members 12 and 13.
．． It is characterized in that the end of one member 12 of the members 13 on the other member 13 side is provided with a fastening metal fitting 15 that tightens the members 12, 13 in a direction in which they attract each other.

Further, the present invention provides a pair of holding members 2.2 arranged in parallel on the left and right.
, a connecting member 3 erected upward from the members 2, 2 and connecting the clamping members 2.2 to each other, and the clamping member 2.
, and a tension member 4 installed perpendicularly to the longitudinal direction between the tension member 4 and the tension member 4, which is divided midway in the longitudinal direction and consists of two members 12 and 13.
．． 13 is each tip 34. 35 are wrapped and lined up in the width direction, and the respective tip portions 34
．． 35 are pivotally connected by a tightening lever 32 through pins 38 and 39, respectively, so that the tightening lever 32 is provided so as to be able to tighten and rotate in the horizontal direction with respect to the tension member 4, and the clamping member 2 It is characterized in that a stopper 40 is provided extending from the clamping lever 32 to prevent rotation of the clamping lever 32 in the anti-clamping direction.

(Function) According to the present invention, as shown in FIG.
．． After setting the concrete plate 5 between the tension members 2 and 2, by tightening the tightening fitting 15 provided in the middle of the tension member 4, the clamping members 2.2 are pulled toward each other, and the members 2. , 2 is the side end surface 2 of the concrete plate 5
7 can be pressed to clamp the concrete plate 5.

Further, as shown in FIG. 7, by rotating the tightening lever 32, which is rotatably provided on the tension member 4, in the tightening direction, the clamping member 2.2 can be similarly moved against the side end surface of the concrete plate 5. 27 can be pressed and clamped.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

1 to 4 illustrate a first embodiment of the invention.

In the figure, 1 is a concrete plate lifting jig,
It is composed of a pair of clamping members 2, 2, a connecting member 3 that connects the clamping members 2, 2, and a pair of tension members 4, 4 installed between the clamping members 2, 2.

The holding members 2.2 are made of angle members having an L-shaped cross section, and are arranged in parallel on the left and right at intervals slightly larger than the width of the concrete plates 5, and are opened downward so that the inner surfaces of the vertical walls 6 face each other. It is set up in the form of The connecting member 3 is bent at a symmetrical position W2 in its longitudinal direction to have a substantially trapezoidal shape, and its legs 7.7 are welded to the center of the vertical wall 6, and the pair of clamping members 2, 2 are welded to the center of the vertical wall 6.
are held parallel and connected. The upper plate part 8 of this connecting member 3 has an insertion hole 10 for a shackle 9 in the center.
A connecting plate 11 having a shape is provided upright.

In the case of this embodiment, the tension members 4 are provided as a pair perpendicularly to the longitudinal direction of the holding members 2, 2 and at both ends thereof,
Together with the holding members 2, 2, it has a frame structure that is rectangular in plan view. This tension member 4 is divided midway in the longitudinal direction into two members 12 and 13, that is, a long plate-shaped first member 1.
2 and a round bar-shaped second member 13, each of these members 12. 13 is the upper wall 1 of the holding member 2 at one end side.
4 are welded and fixed to the respective ends. Both members 12. 13 are provided on a straight line so that their center lines coincide, and the center lines are perpendicular to the longitudinal direction of the holding members 2, 2.

Reference numeral 15 denotes a fastening fitting, which is provided at the end 16 of the first member 12 on the second member 13 side, as shown in FIG.
This fastening metal fitting 15 consists of a rotating lever 17 and a latching metal fitting 18, and the rotating lever 17 is connected to a mounting plate 19. 19 via a bin 20 so as to be rotatable in the vertical direction. The latch fitting 18 has a bent portion 21
It is a metal fitting having a substantially U-shape in plan view through the U-shape, and the rotating lever 17 is sandwiched between the U-shape,
It is rotatably attached to the lever 17 via a rivet 22. The end of the second member 13 on the side of the first member 12 is bent upward substantially perpendicularly to form a locking portion 23, and the locking fitting 18 is attached to the locking portion 23 at the bent portion 21. It's designed to get caught.

Further, 24 is a cushion rubber, and by tightening it with countersunk screws 25 and nuts 26, the vertical wall 6 of the holding member 2
They are provided on both ends of the inner surface.

In this embodiment configured in this way, the concrete plate 5 can be held very easily and firmly.

That is, as shown in FIG. 1, after setting the concrete plate 5 between the clamping members 2.2 from above with the tightening fittings 15 loosened, the tightening fittings 15 are rotated downward. Just by tightening, the tension member 4, that is, the first and second members 12, 13, attract each other, so that the cushion rubber 24 provided on the clamping member 2 is firmly pressed against the side end surfaces 27 on both left and right sides of the concrete plate 5, The concrete plate 5 is held by the lifting jig 1, and is lifted and transported by a crane (not shown) or the like. After that, when you want to remove the concrete plate 5 from the lifting jig 1, all you have to do is turn the tightening fitting l5 upward to return it to the non-tightening state. Easy and quick workability is realized. Further, according to the lifting jig 1 according to the present embodiment, even if the position of the jig l is slightly shifted from the longitudinal center of the concrete plate 5, the concrete plate 5 is rarely tilted when lifted. Therefore, it is very safe. In addition, as shown in FIG. 2, when a step 28 for joints is provided at the peripheral edge of the concrete plate 5, the step
Since the space 29 created by 8 serves as an escape space for the clamping member 2, it is possible to accurately transport it to a predetermined position on the H steel 30 etc. without interfering with the adjacent concrete plate 5.
Wear.

5 and 6 show a second embodiment of the invention. The difference between this embodiment and the first embodiment is that, as shown in the figure, one pair of connecting members 3 are provided, one tension member 4 is provided at the longitudinal center of the holding member 2.2, and The length of the rotating lever 17 of the fastening fitting 15 is made approximately equal to the length of the first member 12, and other aspects are approximately the same as those of the first embodiment. Reference numeral 31 denotes an arch plate, which is fixed to the upper plate portion 8 of each of the connecting members 3.3 at its lower ends, and has an insertion hole 10 for the shackle 9 in the center.

In this embodiment, since there is only one tightening fitting 15,
Not only does the work of engaging and disengaging the concrete plate 5 become easier, but since the length of the rotary lever 17 is increased, even if only one fastening metal fitting 15 is used, the concrete plate 5 can be moved with less force. It can be held more firmly.

7 to 10 show a third embodiment of the present invention. In this embodiment, the clamping members 2, 2 are clamped by a clamping lever 3.

That is, the first and second members 12 and 13 in this embodiment are both long plate-shaped, and as shown in FIG. 7, the first member 1
2 is welded and fixed to the center of the upper wall 14 of one of the clamping members 2,
The second member 13 is attached to the center of the upper wall 14 of the other holding member 2 via a pin 33. These members 12. 1
3 are wrapped at each tip 34.35 and lined up in the width direction, and each of the tip 34.35
Boards 36 and 37 are attached to the lower surface of the . Also,
Each tip 34. 35 are pivotally connected to a tightening lever 32 via pins 38 and 39, respectively, so that the lever 32 can be tightened and rotated in the horizontal direction.

Reference numeral 40 denotes a stopper, which extends obliquely from the approximate center of the upper wall 14 to which the first member 12 is fixed in the upper left direction in FIG.
1 is erected. As shown in FIG. 10, the tightening lever 32 that has been tightened and rotated in the tightening direction (that is, the direction of the arrow in FIG. 41, and is prevented from returning in the anti-tightening direction. Note that 43 is a roller provided on the lower surface of the tightening lever 32, which rolls on the concrete plate 5 to facilitate horizontal rotation of the tightening lever 32.

In this embodiment, substantially the same effects as in the other embodiments can be obtained, but in this case, the tightening lever 32 can be tightened by pulling it in the horizontal direction, making it easier for the worker to apply force. Improves sexual performance.

(Effects of the Invention) According to the present invention, the pair of clamping members 2, 2 can clamp the concrete plate 5 by pressing the side end surfaces 27 of the concrete plate 5 from the left and right, thereby damaging the concrete plate 5. You can hang it safely and securely without any problems. In addition, the lifting jig 1 and the concrete plate 5 can be engaged and disengaged by simply rotating the tightening tool 15 or the tightening lever 32, so the work is easy.
Very quick workability is achieved.

[Brief explanation of drawings]

1 to 4 show a first embodiment of the present invention, in which FIG. 1 is a perspective view of a lifting jig and a concrete plate, FIG. 2 is a front view of the same, FIG. 3 is a side view of the same, and FIG. Fig. 4 is a perspective view of the tightening fitting, Figs. 5 and 6 show the second embodiment, Fig. 5 is a front view of the lifting jig, Fig. 6 is a side view of the same, and Figs. 10
The figures show the third embodiment, FIG. 7 is a sectional plan view taken along the line A-A in FIG. 8, FIG. 8 is a front view of the lifting jig, FIG. 9 is a side view of the tightening lever, and FIG. FIG. 3 is a perspective view showing the engagement of the tightening lever and the stopper. 2--1 clamping member, 3 connecting members, 41 tension member, 12
・1st member, 13.1.2nd member, 15.1 fastening fitting,
32・Tightening lever, 34.35-Tip, 38.39
- Pin, 40--stopper. Patent applicant Asahi Kasei Industries Co., Ltd. No. 5 1

Claims (2)

[Claims] (1) A pair of holding members (2) (2) arranged in parallel on the left and right,
A connecting member (3) that stands upright from the members (2) (2) and connects the clamping members (2) (2) to each other, and a connecting member (3) that extends in the longitudinal direction between the clamping members (2) (2). and a tension member (4) installed perpendicularly to the tension member (4).
4) is divided midway in the longitudinal direction to form two members (12
) (13), and at the end of one of the members (12) (13) on the other member (13) side, there is a direction in which each of the members (12) (13) attracts each other. A hanging jig for a concrete plate, characterized in that it is provided with a tightening fitting (15) for tightening the concrete plate. (2) A pair of holding members (2) (2) arranged in parallel on the left and right;
a connecting member (3) erected upward from the members (2) (2) and connecting the holding members (2) (2) to each other;
It consists of a tension member (4) installed perpendicularly to the longitudinal direction between the holding members (2) (2), and the tension member (4) is separated midway in the longitudinal direction to form two members ( 1
2) (13), and the members (12) and (13) are arranged in the width direction by wrapping at each tip portion (34) and (35), respectively.
) are connected to the tightening lever (3) via pins (38) and (39), respectively.
2), the tightening lever (32)
is provided to be able to tighten and rotate in the horizontal direction with respect to the tension member (4), and from the clamping member (2), a tightening lever (32
) is provided with an extended stopper (40) for preventing rotation in the anti-tightening direction.