JP2810581B2 - Method of transporting horizontally stacked plate members - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of mounting a hanging metal piece on a plate-like member by lifting and transporting a plurality of plate-like members such as PC plates used for floors and walls in a state of being horizontally stacked by a crane. The present invention relates to a method for transporting horizontally stacked plate-like members that can easily be removed.

[0002]

2. Description of the Related Art When a PC plate used for a floor slab or the like is transported to a predetermined position while being suspended by a crane, in order to prevent danger of dropping, conventionally, for example, JP-A-63-1779 is used.
The lifting conveyance method disclosed in Japanese Patent Publication No. 1 is adopted.
The hanging bracket used in this transport method is a rod-shaped one having a pair of through holes formed through the top and bottom of the panel and having a flange-shaped panel receiver on the lower surface. A wire is locked to 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 operation, and labor and labor are required for attaching and detaching the hanging bracket, and the cost is high. . On the other hand, at a building construction site, for example, PC floor slabs and the like are supplied in packages of about 2 to 4 sheets. Therefore, a method that can be automatically attached and detached and transported in a packaged state has been desired in consideration of transport workability.

SUMMARY OF THE INVENTION The present invention has been made based on the above background, and has as its object to automatically attach and detach a hanging bracket to and from a plate-like member and to simultaneously transport a plurality of plate-like members. An object of the present invention is to provide a method for transporting stacked plate members.

[0005]

In order to achieve the above object, according to the present invention, a plate-like member having a plurality of tapered through-holes whose upper part is expanded is arranged in a plurality of stages in a horizontally stacked state. a step of the through hole in cascade, multiple purchase decisions hanging in the crane
Horizontal bead with a number of long rod-shaped hanging brackets fixed vertically
Lowering the suspension and inserting each of the hanging brackets into the through-hole, and horizontally deploying the cotter provided at the lower end protruding end of each of the hanging brackets from the plate-like member to support the plate-like member And raising the horizontal beam and transporting the plate-like member to a predetermined position; folding each of the cotters inside the hanging bracket; raising the horizontal beam to convert the hanging bracket into a plate-like member. From the substrate.

[0006]

According to the above construction, since a plurality of hanging fittings are fixed vertically to the horizontal beam and the posture is maintained vertically, the hanging fittings are held by the through holes during the insertion and fall down. br /> BUT nOT be such that the non inserted by Rukoto, contents to a plurality of through-holes of the plurality of plate members suspended fittings were horizontal loading is
In this state, the plate member is supported by the cotter and can be lifted by a crane. Multiple hanging brackets
Is fixed to the horizontal beam,
Stable lifting can be performed in a horizontally stacked state
You. After transport, fold the cotter and lift the crane,
The hanging fitting is automatically pulled out of the plate-like member.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the drawings. FIG. 1 shows the entire configuration of a 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 in a horizontal state on a wire W slung on a crane 2, and a pair of vertical beams separated from the lower portion of the horizontal beam 3 by a predetermined distance. The frame 4 and a rod-shaped hanging metal fitting 5 which is integrally suspended from a tip of each frame 4.
And a cotter 6 pivotally supported at the tip of each hanging bracket 5 so as to be foldable and deployable, and a hydraulic cylinder 7 arranged in each frame 4.

The frame 4 is divided into two parts as shown in FIGS. 2 and 3, and a hydraulic cylinder 7 is supported inside the frame.

The cotter 6 has a symmetrical wing shape.
The tip of the hanging bracket 5 is rotatably supported via a pin 6a, and is housed in a half-split hollow inside at the tip of the hanging bracket 5 in the vertical state, and both ends are suspended in the horizontal state. It is a structure that protrudes from both sides of the outer periphery of the metal fitting 5 in a deployed state.

A 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 an upper end of the crank lever 11 is connected to a plunger 7a of the hydraulic cylinder 7.
Via a pin 12b.

Both ends of the pin 12b are inserted into first guide grooves 4a formed on both sides of the frame 4 along the vertical direction, and guide the respective crank levers 11 up and down. The hydraulic cylinder 7 can be slightly raised and lowered inside the frame 4 by inserting guide pins 14 protruding on both sides of the hydraulic cylinder 7 into the elongated second guide grooves 4 b formed on both sides of the frame 4. The compression coil spring 15, which is supported and interposed between the upper end of the frame 4 and the upper end of the hydraulic cylinder 7, is always held at the lowered position, and is moved upward by a reaction force due to an error in the amount of protrusion of the plunger 7a. It has a structure to make it.

As shown in FIG. 4A, a plate-like member to be attached to and detached from the suspension device 1, that is, a PC floor slab 8, is packaged, and a plurality of sheets are horizontally stacked with a space therebetween in the vertical direction via a spacer block 16. Be prepared in a state. Each PC floor slab 8
A pair of through-holes 9 are vertically formed at an interval equal to the arrangement interval of the hanging metal fittings 5.

As shown in a partially enlarged view of FIG. 4A, the through hole 9 is slightly larger than the outer diameter of the suspension fitting 5 as a whole, and its upper part is expanded and tapered toward the lower part. Is formed in the tapered hole. Further, a reinforcing plate 10 is integrally embedded in the PC plate 8 at the periphery of the lower surface of the through hole 9.

Therefore, in the horizontal stacking state, the through holes 9 are arranged in two vertical rows with the expanded surface facing upward as shown in the figure. Reference numeral 18 denotes a tapered mortar block for closing the through hole 9 after installing the PC floor slab 8 at a predetermined location.

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

After confirming that the tip of the hanging metal fitting 5 has penetrated the lowermost PC floor slab 8, the hydraulic cylinder 7 is driven to make the plunger 7 a protrude. It is developed in a horizontal state on both sides, and the hanging metal fittings 5 are stopped.

If 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 in a horizontal state as shown in FIG. Since the reinforcing plate 10 abuts against the cotter 6, cracks or chipping of the lowermost PC floor slab 8 due to load concentration is prevented.

Next, the PC slab 8 is set in a predetermined place,
When the plunger 7a is retracted again after receiving the load, the cotter 6 rotates and is housed inside the hanging metal fitting 5. Thereafter, if the wire W is pulled up, the hanging metal fitting 5 is pulled out as shown in FIG. 4C, and the entire horizontal beam 3 can be moved to another place.

The space provided by the spacer block 16 is provided for the rotation of the cotter 6, so that the hanging brackets 5 are sequentially pulled out from the lower side and the upper side thereof is supported, thereby allowing individual or predetermined number of PC slabs to be supported. 8 can be sequentially and individually arranged at desired locations.

In order to close the through hole 9 after installing the PC floor slab 8,
If the mortar block 18 is fitted into the through hole 9 together with the adhesive mortar, the through hole 9 can be closed without falling off the PC floor slab 8 because the block 18 is tapered.

In order to use the present apparatus for transporting various types of PC floor slabs 8, the frame 4 and the hanging bracket 5 may be movably mounted along the horizontal beam 3.

[0022]

As described in detail in the above embodiment, in the method for transporting horizontally stacked plate-like members according to the present invention, the plurality of hanging brackets fixed to the horizontal beam are horizontal.
A plurality of through-holes of the stacked by a plurality of plate-like member can be easily inserted <br/>, the plate-like member is supported by the cotter in this state, double
The time is the number of suspension fittings Ru lifting Ri by the clay <br/> down because it is fixed to the horizontal beam can lifting stable, also after the transport is suspended fittings if Tsuriagere the crane folding cotter is Since the sheet is automatically pulled out from the plate member, the following effects can be obtained. In other words, multiple suspension brackets are fixed to the horizontal beam.
The upper part of the through-hole is tapered
In addition to the fact that
The hanging bracket can be easily inserted into the formed through holes.
And a horizontal beam is lifted by a crane
In some cases, while multiple plate-like members are stacked horizontally
Stable lifting can be performed. In addition, the transfer operation can be automated, and no manual work is required for each attachment and detachment.
A plurality of plate-like members can be simultaneously transported in a packaged state, and the working time can be reduced.

[Brief description of the drawings]

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

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

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

FIGS. 4A to 4C are explanatory diagrams showing a procedure for transporting a PC slab.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Suspension device 5 Suspension bracket 6 Cotta 8 PC floor slab (plate-like member) 9 Through hole 10 Reinforcement plate

Continued on the front page (72) Inventor Masato Yamada 2-3-3 Kandaji-cho, Chiyoda-ku, Tokyo Obayashi-gumi Tokyo Head Office (72) Inventor Hiroaki Ikeda 2-3-3 Kandaji-cho, Chiyoda-ku, Tokyo Obayashi-gumi Tokyo Head office (72) Inventor Tsuneori Harada 2-3-3 Kandaji-cho, Chiyoda-ku, Tokyo Obayashi Corporation Tokyo head office (56) References JP-A-63-17791 (JP, A) , U) Actually open 1979-153676 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) E04G 21/14

Claims (1)

(57) [Claims] 1. A top multiple stages arranged flared tapered plurality of through holes formed by a plate-like member laterally stacked state, a step of tandem the respective through holes, a plurality purchase decisions hanging in the crane
Horizontal beam of elongated rod-like suspension bracket is fixed vertically
A step is lowered to insert the respective suspension bracket in the through hole, and supporting the plate-like member cotter provided on the lower surface projecting end horizontally deployed from the plate-shaped member of each suspension bracket Step, raising the horizontal beam and transporting the plate-like member to a predetermined position, folding each cotter inside the hanging bracket, raising the horizontal beam and lifting the hanging bracket from the plate-like member. A method for transporting horizontally stacked plate members, comprising a step of detaching.