JPH05286682A - Lifting device for flat plate block of concrete - Google Patents

Abstract

PURPOSE:To safely, certainly, quickly lift a heavy object such as a concrete block of flat plate in a construction site for a multi-storey building with a minimum number of workmen and minimum necessary labor through the use of a crane or any other hoisting device. CONSTITUTION:Vertical legs 2a, 2b are joined with the lower parts of a pair of crossing boards 1a, 1b, which are pivoted in the centers, wherein one of the boards is provided with a detent projection 6, while on the other board, the base of a degree-of-opening holding rod 7 formed at the free end with a two-pronged part is pivoted. Holder plates 8a, 8b are attached to the insides of the vertical legs, and height adjusting plates 10a, 10b are fastened horizontally to the central upper edges of these holder plates through respective extension parts, and further, edge flanges 11a, 11b are provided at the lower edges while hooks 12a, 12b provided at the two ends.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete plate block hoisting device for hoisting a concrete plate block such as a wall material or a floor material on a construction site with a sling or the like.

[0002]

2. Description of the Related Art When a large number of concrete flat plate blocks such as wall materials and floor materials are unloaded at a construction site of a high-rise building, conventionally, a hoisting platform has been used with a crane or a hoisting device to block heavy objects. The body is placed on a beam that has been manually assembled and is being laid down. In that case,
When hoisting a concrete flat plate block using a wire sling or a balance-type sling on a hoist, the wire was hung over the concrete flat plate block.

[0003]

When the above-mentioned hoisting means is used, there is a problem that the concrete flat plate block is damaged by the sling, or the sling itself is damaged by contact with the block. Was. Further, in order to prevent damage, there is a problem that an auxiliary tool such as a pad is required for luggage such as a concrete flat plate block, and many work steps are required. In addition, it requires a minimum of 4 workers to load and unload the blocks to and from the hoist, which requires a lot of manpower as well as a lot of manpower, as well as a lot of labor during work. Had an unforeseen accident. The present invention is a simple, quick unloading of concrete flat plate blocks of heavy goods,
The purpose is to perform surely and safely.

[0004]

The present invention takes the following means in order to solve the above problems. The center of a pair of cross plates connecting the vertical legs in the downward direction is rotatably pivoted by a pivoting part, and the vertical legs can be pinched by using this pivoting part as a fulcrum, and one crossing A locking projection for restricting the maximum opening of the pair of cross plates is formed on the upper part of the pivotal part of the plate, and a free end is formed in a bifurcated part on the upper part of the pivotal part of the other cross plate, The base end of the opening holding rod that is freely attachable to the side edge of the cross plate on the other side is pivotally formed, and the pressing plates facing each other are fixed to the inside of the free ends of the vertical legs,
A height adjusting plate is connected to the center of the upper edge of the holding plate through an extension portion, and a plurality of hook portions are connected to the lower edge of the holding plate through a brim. for that reason,

[0005]

[Function] When sandwiching a concrete flat plate block, the free end of the opening holding rod is fixed to the side edge of the other crossing plate to secure the opening angle of the crossing plate, and the lower vertical leg The cross plates are suspended from above the stacked block members while maintaining the opening.

Then, when the vertical legs reach the surface of the member, both presser plates descend on both sides of the flat plate block, and the horizontal edges of the height adjusting plate come into contact with the surface of the flat plate block, this becomes a force point and the wire rope of the intersecting plate. The connecting part is lowered by its own weight, the angle is opened and the opening holding rod is disengaged, and at the same time, the limit of the opening angle of the cross plate is restricted by the locking projection, and it does not expand more than necessary.

Next, when the wire rope is lifted up by the crane, the respective ends of the crossing plate are lifted up, and the vertical legs sandwich the flat plate block by the lever action with the pivot point as the fulcrum, and abut. With the tip edge of the height adjusting plate as a fulcrum, the horizontal claw and the brim are slid from the both sides to the bottom side of the planographic block and sandwiched.

The concrete flat plate block is supported and clamped by a height adjusting plate on the upper side and hooks on the left and right sides of the lower part, held in a stable state, and lifted up as it is by a crane or a hoisting device.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. 1 is a perspective view of a hoisting device according to the present invention, and FIG.
Is a front view in a suspended state, and FIG. 3 is a front view in a suspended state. In the figure, 1a and 1b are a pair of intersecting plates, and a pivoting portion 2 is provided at a substantially central portion of the intersecting plates 1a and 1b.
It is rotatably pivoted through. And cross plate 1
Each of a and 1b has a vertical leg 2a,
2b are connected to each other, and connecting holes 3a and 3b are bored in the other end of the connecting hole 3b so that they can be hung by a wire 5 via a shackle 4 or the like. And the vertical legs 2a, 2
b is rotated around the pivotal portion 2 as a fulcrum so that the concrete flat plate block B can be sandwiched.

On the upper part of the pivotal portion of one of the cross plates 1b,
A locking projection 6 is formed for restricting the maximum opening of the pair of cross plates, and the maximum opening of the pair of cross plates 1a, 1b is restricted when the locking projection 6 is rotated about the pivot portion 2 as a fulcrum. . Therefore, since it does not expand more than necessary, it becomes possible to reliably hold the concrete flat plate block B. A base end portion 7a is rotatably provided on an upper portion of the pivot portion of the other cross plate 1a, and an opening holding rod 7 having a free end formed on a forked portion 7b is pivotally formed. The free end bifurcated portion 7b of the opening holding rod 7 is formed so as to be freely attached to the side edge of the cross plate 1b on the other side. The free end bifurcated portion 7b of the opening holding rod 7 has the pivot plate 2 as a fulcrum and the cross plate 1 as a fulcrum.
The openings a and 1b may be opened at the same time, or the base end portion 7a may be mechanically rotated to open the opening holding rod 7.

At the free ends of the vertical legs 2a and 2b, which are respectively connected to the lower portions of the cross plates 1a and 1b, press plates 8a and 8b, which face each other, are fixed to the insides of the vertical legs 2a and 2b. Height adjusting plates 10a and 10b are connected to the center of the upper edge of 8b through extending portions 9a and 9b. Also,
A plurality of hook portions 12a, ..., 12b, ... Are connected to the lower edge portions of the holding plates 8a, 8b via edge collars 11a, 11b. The shape and number of these hook portions 12a and 12b are not particularly limited as long as the concrete flat plate block B is sandwiched between the pressing plates 8a and 8b facing each other as long as it has sufficient force to hold the block B. It is not something that will be done.

In a high-rise building site according to the present invention, when unloading a concrete flat plate block to be used as a wall material or a floor material to a high place, the lower end of the wire rope suspended by a crane is connected to the end portions of the cross plates 1a and 1b. The vertical leg 2 is connected to the connecting holes 3a and 3b of the
The concrete flat plate block B held by the holding plates 8a, 8b of a, 2b is clamped by the lever action and unloaded in a stable state. From above the block members piled up when clamping the concrete flat plate blocks. When suspending the cross plates 1a, 1b, the free end bifurcated portion 7b of the opening holding rod 7 is attached to the side edge of the other cross plate 1a, 1b to secure the opening angle of the cross plates 1a, 1b. By doing
The opening of the lower vertical legs 2a and 2b is maintained.

The vertical legs 2a, 2b that have been suspended reach the surface of the concrete flat plate block B, and the two holding plates 8a, 8b descend on both sides of the flat plate block so that the horizontal edges of the height adjusting plates 10a, 10b are the surface of the flat plate block. When it comes into contact with the cross plate 1a, 1b, the wire rope connecting portion of the cross plates 1a and 1b is lowered by its own weight, the angle is opened, and the forked portion 7b of the opening holding rod 7 is disengaged. , 1b limit the opening angle.

Next, when the wire rope is lifted by a crane, the respective ends of the cross plates 1a and 1b are lifted, and the vertical legs 2a and 2b are lifted by the pivoting portion 2 as a fulcrum so that the concrete flat plate block B can be lifted. The hook portions 12a and 12b and the edge flanges 11a and 11b are slid from both sides on the bottom side of the flat plate block so as to sandwich them by narrowing the space so as to sandwich them, and using the tip edges of the contacted height adjusting plates 10a and 10b as fulcrums. ..

First, the height adjusting plate 1 is provided on the surface of the flat plate block.
When the tip edges of 0a and 10b come into contact with each other, a space is created in the extending portions 9a and 9b of the pressing plates 8a and 8b, which provides a space and does not require a spring so that the hook portions 12a and 12b are located on the bottom side of the concrete flat plate block B. It is a position where it is easy to enter. In the flat plate block, the height adjusting plates 10a and 10b on the upper side are supported by the hook portions 12a and 12b on the lower left and right sides, and are clamped and held in a stable state and hoisted by a crane as they are. During this time, the labor of workers is hardly required, and the number of workers may be one.

[0016]

As described above, according to the present invention, a substantially central portion of a pair of intersecting plates having vertical legs connected downward is pivotally pivoted by a pivotal portion, and the pivotal portion is a fulcrum. The vertical legs can be pinched freely, and a locking projection that restricts the maximum opening degree of the pair of cross plates is formed above the pivot portion of one cross plate.
A free end is formed in a bifurcated portion above the pivoting portion of the other crossing plate, and a base end of an opening holding rod that is freely attachable to the side edge of the other crossing plate is pivotally formed. The pressing plates facing each other are fixed to the inside of the free ends of the vertical legs, and the height adjusting plate is connected to the center of the upper edge of the pressing plate via the extension, and the lower edge of the pressing plate is connected. A plurality of hooks are connected to each other via a brim.

Therefore, unlike the conventional case, the work by a large number of people is not required, and there is an effect that the operation is simple, safe, quick and surely unloading with a little labor of one person and the minimum necessary wasteless movement. Further, the opening holding rod and the locking projection prevent the opening from being held and spread unnecessarily, thereby preventing an accident such as pinching a finger.

[Brief description of drawings]

FIG. 1 is a perspective view of a hoisting device.

FIG. 2 is a front view in a state of being hung.

FIG. 3 is a front view of a state of being hung.

[Explanation of sign]

 1a Crossing plate 2 Pivoting part 2a Vertical leg 6 Locking protrusion 7 Opening holding rod 8a Holding plate 9a Extending part 10a Height adjusting plate 11a Edge collar 12a Hook part B Concrete flat plate block

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Emi Shimohira, 5-26, Nankodai, Izumi-ku, Sendai-shi (72) Inventor, Hayashisaku Sato 3-28-22, Tsurugaoka, Izumi-ku, Sendai-shi

Claims (1)

[Claims] 1. A substantially central portion of a pair of cross plates connecting downwardly downward vertical legs is rotatably pivoted by a pivoting portion, and the vertical legs can be pinched by using this pivoting portion as a fulcrum. None,
A locking projection that restricts the maximum opening of the pair of cross plates is formed above the pivot part of one cross plate, and a free end is formed as a bifurcated part above the pivot part of the other cross plate. Then, the base end of the opening holding rod that can be freely attached to the side edge of the cross plate on the other side is pivotally formed.
The pressing plates facing each other are fixed to the inside of the free ends of the vertical legs, and the height adjusting plate is connected to the center of the upper edge of the pressing plate via the extension, and the lower edge of the pressing plate is connected. A lifting device for a concrete flat plate block, wherein a plurality of hooks are connected to each other via a brim.