JPH05239923A - Carrying method of board member piled transversely - Google Patents

Abstract

PURPOSE:To permit the automatic attaching/detaching of suspension lugs for board members and the simultaneous carrying of plural board members. CONSTITUTION:The movement of a horizontal beam 3 to PC floor plates 8 in a piled condition and the positioning-arranging of it on them, face each suspension lug 5 to each through hole 9. The lowering of the horizontal beam 3 guides the suspension lugs 5 to the upper part extension surfaces of the through holes 9 to be inserted. When tips of the suspension lugs 5 penetrate the lowest stage PC floor plate, cotters 6 are expanded. The lifting of a wire W in this condition, causes the cotters 6 to abut surfaces of reinforcing plates 10 to lift the PC floor plates 8 in a horizontal condition. Installing the PC floor plates 8 in a given place after movement, and turning the cotters 6 to be housed in the inside of the suspension lugs 5 after load is applied to the place, causes the suspension lugs 5 to be extractable.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to mounting a hanging metal object on a plate member such that a plurality of plate members such as floor slabs and PC plates used for walls are horizontally stacked and transported by a crane. The present invention relates to a method of conveying horizontally stacked plate-shaped members that can be easily removed.

[0002]

2. Description of the Related Art When a PC plate used as a floor slab or the like is carried to a predetermined position while being suspended by a crane, in order to prevent the risk of dropping, it has hitherto been disclosed in, for example, JP-A-63-1779.
The hoisting and conveying method shown in Japanese Patent No. 1 is adopted.
The hanging metal fittings used in this transportation method are rod-shaped ones that are inserted through a pair of insertion holes formed through the top and bottom of the panel and have a flange-shaped panel receiver on the lower surface. A wire is locked on the upper protruding end from the panel, and this wire is slung on a crane hook and lifted.

[0003]

However, in this transfer method, it is assumed that only one panel is transferred for each work, and it requires manpower and labor for each attachment / detachment of the hanging metal fitting, which is costly. .. On the other hand, at a building construction site, for example, PC floor slabs are packaged into about 2 to 4 sheets and supplied. Therefore, in consideration of the transfer workability, there has been a demand for a method capable of automatically attaching and detaching and transferring the packaged state.

The present invention has been made on the basis of the above background. An object of the present invention is to enable automatic attachment and detachment of hanging metal fittings to and from a plate-like member, and to enable simultaneous conveyance of a plurality of plate-like members. The present invention provides a method for conveying stacked plate members.

[0005]

To achieve the above object, according to the present invention, a plurality of plate-like members each having a plurality of tapered through holes each having an enlarged upper portion are arranged side by side in a stacked state, A step of arranging the through holes in a row; a step of lowering a long rod-shaped hanging metal fitting vertically fixed to a horizontal beam suspended by a crane to insert the hanging metal fitting into the through hole; The step of horizontally deploying a cotter provided on the lower surface protruding end from the plate-shaped member to support the plate-shaped member, the step of raising the hanging metal member to convey the plate-shaped member to a predetermined position, and the cotter Is folded inside the hanging fitting, and the crane is pulled up to be separated from the plate member.

[0006]

[Advantage] According to the above construction, since the hanging metal fitting is vertically fixed to the horizontal beam and the posture is kept vertical, the hanging metal fitting is caught in the through hole in the middle of the insertion and falls down, so that the insertion is impossible. The hanging metal fitting can be automatically inserted by penetrating a plurality of plate-shaped members, and in this state, the plate-shaped member is supported by the cotter and can be lifted by the crane. After transportation, fold the cotter and hoist the crane,
The hanging metal fitting is automatically pulled out from the plate member.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings. FIG. 1 shows the overall structure of the suspension device used in the present invention. The suspension device 1 includes a horizontal beam 3 made of an H-shaped steel or the like suspended horizontally from a wire W hanging on a crane 2 and a pair of vertical beams provided below the horizontal beam 3 so as to be separated from each other by a predetermined distance. Frames 4 and rod-shaped hanging fittings 5 that are vertically installed integrally at the tips of the frames 4.
And a cotter 6 pivotably supported at the tip of each hanging metal fitting 5 so as to be able to be folded and expanded, and a hydraulic cylinder 7 arranged in each frame 4.

As shown in FIGS. 2 and 3, the frame 4 has a split shape and supports a hydraulic cylinder 7 therein.

The cotter 6 has a symmetrical wing shape,
It is rotatably pivotally supported at the tip of the hanging bracket 5 through a pin 6a, and is housed in a hollow inside which is divided in half at the tip of the hanging bracket 5 in a vertical state, and both ends thereof are suspended in a horizontal state. It is a structure in which both sides of the metal fitting 5 project in an unfolded state.

The tip of a crank lever 11 constituting a link mechanism is connected to a position eccentric from the center of rotation of the cotter 6 via a crank pin 12a, and the upper end of the crank lever 11 is a plunger 7a of the hydraulic cylinder 7.
To a pin 12b.

Both ends of the pin 12b are inserted into first guide grooves 4a formed on both sides of the frame 4 in the up-down direction to guide each crank lever 11 up and down. Further, the hydraulic cylinder 7 can be slightly moved up and down inside the frame 4 by inserting the guide pins 14 protruding on both sides thereof into the second guide grooves 4b having a long hole formed on both sides of the frame 4. The compression coil spring 15, which is supported and is interposed between the upper end of the frame 4 and the upper end of the hydraulic cylinder 7, is always held in the lowered position, and is positioned on the ascended side by receiving a reaction force due to an error in the protrusion amount of the plunger 7a. It has a structure that allows it.

A plate-like member which can be attached to and detached from the suspension device 1, that is, a PC floor slab 8 is packaged as shown in FIG. 4 (a), and a plurality of sheets are horizontally stacked with a spacer block 16 open vertically. Be prepared in the state. Each PC floor 8
A pair of through holes 9 are vertically formed so as to extend at intervals equal to the intervals at which the hanging fittings 5 are arranged.

As shown in an enlarged view in a part of FIG. 4 (a), the through hole 9 is slightly larger than the outer diameter of the hanging fitting 5 as a whole, and the upper part is widened, and is tapered toward the lower part. Is formed in a tapered hole. Further, at the peripheral edge of the lower surface of the through hole 9, a reinforcing plate 10 is integrally embedded in the PC plate 8.

Therefore, in the horizontally stacked state, the through holes 9 are arranged in two columns with the expansion surface as the upper surface, as shown in the figure. Reference numeral 18 is a tapered mortar block for closing the through hole 9 after the PC floor slab 8 is installed at a predetermined position.

Next, the carrying method in the above configuration will be described. First, as shown in FIG. 4 (a), if the horizontal beam 3 is moved to the upper part of the PC floor slab 8 in a stacked state at the installation place, and this is positioned and arranged on the PC floor slab 8, each hanging metal fitting 5 is It faces each insertion hole 9. By retracting the plunger 7a in this state, the cotter 6 can be folded and housed inside the hanging metal fitting 5, the hanging metal fitting 5 can be inserted into the through hole 9, and the horizontal beam 3 can be lowered. The hanging fitting 5 can be easily inserted by being guided by the expanding surface of the upper part of the through hole 9. The position of the end of the hanging bracket 5 on the PC floor slab 8 is determined by, for example, the ultrasonic distance sensor 17 attached to the horizontal beam 3 of the uppermost PC floor slab 8. The difference between the distance between the upper surface and the ultrasonic distance sensor-17 and the distance between the cotter 6 and the ultrasonic distance sensor-17 is the sum of the thickness of the PC floor slab 8 and the spacer block 16 per sheet. It can be confirmed by the value divided by.

After confirming the state where the tip of the hanging metal fitting 5 penetrates the lowermost PC floor slab 8, the hydraulic cylinder 7 is driven to cause the plunger 7a to project. It is unfolded horizontally on both sides, and the hanging fitting 5 is retained.

When the wire W is lifted in this state, the cotter 6 comes into contact with the surface of the reinforcing plate 10 and the PC floor slab 8 can be lifted horizontally as shown in FIG. 4 (b). Since the reinforcing plate 10 abuts against the cotter 6, cracking or chipping of the lowermost PC floor slab 8 due to load concentration is prevented in advance.

Next, the PC floor slab 8 is installed at a predetermined place,
When the plunger 7a is retracted again after the load is stored here, the cotter 6 rotates and is housed inside the hanging fitting 5. After that, when the wire W is pulled up, the hanging fitting 5 is pulled out as shown in FIG. 4C, and the horizontal beam 3 can be moved to another place.

A space for the spacer block 16 is provided for the rotation of the cotter 6 so that the hanging metal fitting 5 can be pulled out in order from the bottom and the upper portion of the hanging metal fitting 5 can be supported to individually or a predetermined number of PC floor slabs. 8 can be sequentially arranged individually at desired places.

After the PC floor slab 8 is installed, to block the through hole 9,
When the mortar block 18 is fitted into the through hole 9 together with the adhesive mortar, the block 18 has a tapered shape, so that the through hole 9 can be closed without falling off from the PC floor slab 8.

The frame 4 and the hanging bracket 5 may be movably mounted along the horizontal beam 3 so that the apparatus can be used for carrying various types of PC floor slabs 8.

[0022]

As described above in detail with reference to the embodiments, in the method for conveying horizontally stacked plate-like members according to the present invention, the hanging metal fitting automatically penetrates through the plurality of plate-like members. It can be inserted, the plate-shaped member is supported by the cotter in this state, and can be hoisted by the crane.After the transportation, if the cotter is folded and the crane is hoisted, the hanging metal fittings are automatically pulled out from the plate-shaped member. effective. Transport work can be automated, and no manual labor is required for each installation and removal. A plurality of plate-shaped members can be simultaneously conveyed in a packaged state, and work time can be shortened.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing an overall configuration of a suspension device used in the present invention.

FIG. 2 is a side cross-sectional view showing a main part of the suspension device.

FIG. 3 is a front sectional view showing the main part.

4 (a) to (c) are explanatory views showing a procedure for carrying a PC floor slab.

[Explanation of symbols]

 1 Suspension device 5 Suspension metal fittings 6 Cotta 8 PC floor slab (plate member) 9 Through hole 10 Reinforcing plate

Front Page Continuation (72) Inventor Hiroaki Ikeda 2-3 Kandajimachi, Chiyoda-ku, Tokyo Obayashi Corporation Tokyo headquarters (72) Inventor Tsunenori Harada 2-3 Kandaji-cho, Chiyoda-ku, Tokyo Share company Obayashi Tokyo Head Office

Claims (1)

[Claims] 1. A step of arranging a plurality of plate-like members having a plurality of tapered through holes each having an expanded upper portion in a horizontal stacking state and arranging the through holes in tandem, and a horizontal state suspended from a crane. A step of lowering a long rod-shaped hanging metal fitting vertically fixed to the beam to insert the hanging metal fitting into the through hole; and a cotter provided on a lower surface protruding end of the hanging metal fitting from the plate-shaped member. The steps of horizontally unfolding and supporting the plate member, the step of raising the hanging metal member to convey the plate member to a predetermined position, the cotter is folded inside the hanging metal member, and the crane is pulled up. And a step of detaching the plate-shaped member from the plate-shaped member.