JPH06240876A - Lifting device for concrete member and others - Google Patents

Abstract

PURPOSE:To lift a concrete member at a slant angle specified beforehand when a working site has the specified slant angle, to carry the apparatus with the above described specified slant angle being maintained even in transportation to the working site, and to perform the installation work of the concrete flat plate under this state. CONSTITUTION:A lifting apparatus has a pair of lifting holes 2, which are formed at the approximate position of the center of gravity at both side edges of a member to be lifted 1, lifting rods 3, which are inserted into the lifting holes 2, supporting rods 4 for supporting the lifting rods 3 and lifting members 11 for lifting and holding the supporting rods 4. In the lifting apparatus, a pair of the lifting holes 2 are formed at the slightly upper parts of the position of the center of gravity of the member to be lifted 1. In order to lift and hold the member to be lifted 1 at the specified slant angle, the shape of the lifting hole 2 is made to be the shape, which cannot be rotated. The shape of the lifting rod 3, which is inserted into the lifting hole 2, is made equal to the shape of the hole. The lifting rod 31 is attached to the supporting rod 4 so that the rod 3 cannot be rotated.

Description

Detailed Description of the Invention [Industrial applications]

The present invention relates to a hoisting device for stacking and transporting concrete members.

[0002]

2. Description of the Related Art Conventionally, in this type of hoisting device, for a large and heavy flat concrete plate, a pair of hoisting holes are formed at the center of gravity on both sides of the hoisting device, and hoisting tools are inserted into the hoisting holes. It was supposed to be lifted and transported.

However, since only one pair of these hoisting holes are provided on both sides, the concrete plate may sway or rotate in the middle, which is extremely dangerous and the concrete plate should be installed at a predetermined place. In the case of the above inclination angle, the suspended concrete flat plate has to be worked so as to have a predetermined inclination angle, and there is a problem that the construction is very difficult.

[0004]

SUMMARY OF THE INVENTION The present invention was devised in view of such conventional problems, and when the construction site has a predetermined inclination angle, the predetermined An object of the present invention is to provide a hoisting device that can be hoisted at an inclination angle and can be carried while maintaining the predetermined tilt angle even during transportation, and thus can be carried to a construction site, and at the same time, a concrete flat plate can be installed. To do.

[0005]

In order to solve the above problems, the present invention is configured as follows.

That is, according to the present invention, a pair of hoisting holes are provided at both ends of the member to be hoisted at substantially center of gravity positions,

A lifting rod inserted into the lifting hole, a support rod for supporting the lifting rod,

A hoisting device comprising a hoisting member for hoisting and holding a support rod,

The pair of hoisting holes are formed slightly above the center of gravity of the hoisting member, and the hoisting holes have non-rotatable shapes so that the hoisting member can be hoisted and held at a predetermined inclination angle. age,

The shape of the hoisting rod inserted into the hoisting hole is substantially the same as the hole shape, and the hoisting support rod is attached to the support rod in a non-rotatable state.

[0011]

In the present invention, the hoisting hole has a non-rotatable shape, and the hoisting support rod inserted into the hoisting hole has substantially the same shape as the hole.

The lifting support rod is attached to the support rod in a non-rotatable state. Therefore, the predetermined inclination angle can be maintained and the concrete plate can be transported to the construction site, and the concrete flat plate can be installed in that state.

[0013]

The present invention will be described below based on the embodiments shown in the drawings.

First, in the drawings, reference numeral 1 indicates a concrete flat plate to be constructed. This concrete flat plate 1 is generally constructed as a large and heavy one.

Semi-circular hoisting holes 2 and 2 are formed in the upper part of the center of gravity of both sides of the concrete flat plate 1 (see FIG. 2).

Further, FIGS. 3 and 4 show a lifting rod 3 which is inserted into the semicircular lifting hole 2, and the shape of the lifting rod 3 fits into the lifting hole 2 and is substantially the same. It is configured as a semicircular shape.

The hoisting rod 3 is attached to a supporting rod 4 for holding the hoisting rod 3 in a non-rotatable state. Even if the hoisting rod 3 is inserted into the hoisting hole 2 and the concrete flat plate 1 is hoisted, the hoisting rod 3 is hoisted. There is no fear that the rod 3 will rotate and the concrete flat plate 1 that has been lifted thereby will also rotate.

As the structure in the non-rotatable state, as can be understood from FIG. 3, the mounting side outer peripheral surface 5 of the lifting rod 3 and the inner peripheral surface of the mounting hole 6 of the supporting rod 4 are so-called spline-shaped or It may be formed in a serration shape so as to be in a non-rotatable state. As can be understood from FIG. 4, a recessed portion that engages with the outer peripheral surface 5 of the lifting rod 3 on the mounting side and the inner peripheral surface of the mounting hole 6 of the support rod 4 respectively. 7 and the ridge portion 8 are provided,
A mechanism may be used in which they are fitted to each other so that they cannot rotate.

With the mechanism shown in FIG. 3 and FIG. 4, the hoisting inclination angle of the concrete flat plate 1 to be hoisted can be changed at any time.

That is, the hoisting rod 3 is shown in FIG.
As shown in (B) and (C), it is possible to freely change the inclination angle of the hoisting rod 3 with respect to the support rod 4 by fitting it to the support rod 4. In addition, FIG. 5C shows the lifting rod 3.
This is a type in which the tip of the is square.

By the way, the pair of supporting rods 4 and 4 are a pair of wire-shaped or chain-shaped lifting members 11 and 1, respectively.
1 and is further connected to the pair of lifting members 1
Reference numerals 1 and 11 are connected to a horizontal suspension member 9 that extends horizontally.

As described above, the hoisting tool 10 is constructed by including the hoisting rod 3, the supporting rod 4, the hoisting member 11, and the hoisting horizontal member 9.

The operation of this embodiment will be described above. First, the hoisting rods 3 and 3 are fitted into the mounting holes 5 and 5 of the supporting rods 4 and 4 so as to have an inclination angle equivalent to that of the concrete flat plate 1 to be hoisted.

For example, when an inclination angle of 45 degrees is required as shown in FIG. 5 (A), the lifting rod 3 is fitted into the mounting hole 5 of the support rod 4 as shown in FIG.

Next, as shown in FIG. 1, the pair of hoisting rods 3 and 3 are attached to the concrete flat plate 1 in semicircular hoisting holes 2 and 2.
Plug in.

Then, from this state, the hanging tool 10 is hoisted by a crane or the like, and is hoisted upward with a tilt angle as shown in FIG.

Then, the lifting holding points of the concrete flat plate 1 are two points in the pair of hoisting holes 2 and 2, but at these two points, the concrete flat plate 1 is hoisted in a non-rotatable state, so that the swinging is performed. Without being carried out, it is hoisted and transported with a predetermined inclination angle.

Then, as shown in FIG. 8, the concrete flat plate 1 can be transported to an installation site having a predetermined inclination angle and lowered from above to be installed in the installation place having an inclination angle as it is. You can do it.

[0029]

As described above, according to the hoisting device for concrete members and the like according to the present invention, a concrete flat plate to be installed at a construction site at a predetermined tilt angle is hoisted at a predetermined tilt angle and transported. Further, it is possible to perform construction on the construction site with the inclination angle.

Therefore, there is a great effect that the concrete flat plate can be easily and quickly installed at a construction site having a predetermined inclination angle.

[0031]

[Brief description of drawings]

FIG. 1 is an explanatory diagram of a usage state of the present embodiment.

FIG. 2 is an explanatory diagram showing positions of lifting holes according to the present embodiment.

FIG. 3 is an explanatory view showing a fitted state of a support rod and a lifting rod.

FIG. 4 is an explanatory view showing a fitted state of a support rod and a lifting rod.

FIG. 5 is an explanatory view showing a state in which a tilt angle of a lifting rod is changed.

FIG. 6 is a diagram illustrating a usage state of the present embodiment.

FIG. 7 is an explanatory diagram showing a lifted state of the present embodiment.

FIG. 8 is an explanatory diagram showing a construction state at a construction site having an inclination angle.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Concrete flat plate 2 Lifting hole 3 Lifting rod 4 Support rod 5 Lifting rod mounting portion outer peripheral surface 6 Mounting hole 7 Recessed ridge portion 8 Convex ridge portion 9 Lifting horizontal member 10 Lifting tool 11 Lifting member

Claims (1)

[Claims] 1. A pair of hoisting holes (2, 2) formed at substantially the center of gravity of both end faces of a hoisting member, and hoisting rods (3, 3) inserted into the hoisting holes (2, 2).
A supporting rod (4, 4) for supporting the lifting rod (3, 3), and a lifting member (11, for lifting and holding the supporting rod (4, 4).
11) and a pair of hoisting holes (2, 2) are formed at a position slightly above the center of gravity of the member to be hoisted and hold the member to be hoisted at a predetermined inclination angle. Therefore, the lifting holes (2,
The hole shape of 2) is a non-rotatable shape, and the lifting rod (3,
A hoisting device for a concrete member or the like characterized in that the shape of 3) is also substantially the same as the hole shape, and the hoisting rods (3, 3) are attached to the support rods (4, 4) in a non-rotatable state.