JPH08169507A - Pallet cargo handling method - Google Patents

Abstract

PURPOSE: To facilitate its carrying-in and carrying-out by efficiently stacking palletized cargoes in stages in a limited space in a warehouse. CONSTITUTION: A pallet cargo handling method is provided to load cargoes. A raising lowering body (a suspending tool 18) is installed on a ceiling traveling body (a girder and a trolley) movable along a two-dimensional plane, and plural leg parts 22 extended and suspended toward side surfaces of a pallet 20 are arranged on this raising lowering body. Claws 34 opposed to a pallet side surface opening are arranged on these leg parts, and a leg part interval is made adjustable, or the leg parts are constituted so that legs can be opened, and the claws or the leg parts are made turnable, and the claws are installed so as to drive to go in and out of the pallet side surface opening (an inserting space). Therefore, though the pallet is arranged in a line and a row and is placed in a plane shape in a warehouse, the pallet is stacked at intervals to enable going in and out of the legs or the claws. Therefore, the pallet can be arranged in a small clearance in the warehouse.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pallet cargo handling method, and more particularly to a pallet cargo handling method suitable for use in a warehouse for directly loading flat palletized cargo on a flat pallet.

[0002]

2. Description of the Related Art When storing parcels in a warehouse, a method of directly stacking palletized parcels on a flat pallet in a flat place is often adopted. Since the palletizing luggage has a fixed size, it is a multi-tiered system in which palletizing luggage is placed on top of the palletizing luggage, and the warehouse space is effectively utilized.

For loading and unloading such stacked palletized luggage, a method using a forklift and a method using an overhead crane have been conventionally used. The transportation method by a forklift is performed by inserting the fork into one of the fork insertion openings formed in the side surface of the flat pallet and lifting and moving. When an overhead crane is used, a C hook is used as a lifting jig, and the C hook is inserted into a side insertion port of a pallet and lifted and moved as in the case of a fork.

[0004]

However, in the conventional method, a forklift movement and a turning space are required in the stacking space in the warehouse, and a C hook movement space is also required when using a crane. . Since the forklift is larger than the length of one side of palletizing luggage, the passage width is required for several rows of palletizing luggage. On the other hand, in the case of using a crane, it is sufficient that there is a space through which the C-hooks can pass between the stacked luggage rows, and thus a smaller moving space is required than in the case of using a forklift. However, even when a crane is used, at least the C hook has a structure in which the hook claws corresponding to almost one side of the pallet are inserted into the pallet, so that a movement space for almost one row of palletizing luggage is required, and this requires a plurality of rows. In need of. Therefore, this moving space becomes a dead space when viewed from the luggage stacking space,
There was a problem that the limited space in the warehouse could not be used effectively.

The present invention has been made in view of the above-mentioned problems of the prior art, and enables palletizing parcels to be efficiently stacked in a limited space in a warehouse while being easily carried in and out. It is an object of the present invention to provide a pallet cargo handling method capable of handling.

[0006]

In order to achieve the above object, a pallet loading method according to the present invention is a method for directly loading a pallet loaded with cargo in a warehouse by directly placing it in a two-dimensional plane. A plurality of legs that are suspended from a ceiling traveling body that can be moved up and down so as to extend and hang down toward the side surface of the pallet; and claws that move in and out toward the side surface opening of the pallet. The loading and unloading pallet is used for loading and unloading the loading pallet horizontally so that the legs of the lifting pallet can be inserted and the claws can be inserted into and removed from the side openings of the pallet in a matrix arrangement in vertical and horizontal directions. As configured.

[0007]

According to the above-mentioned constitution of the invention, the claws are attached to the tips of the leg parts attached to the elevating body, the interval between the leg parts is adjusted, and the claws are moved in and out of the pallet side surface opening. As a result, the pawls can be engaged or disengaged from the pallet on which the palletized luggage is placed, and by lifting the elevating body in the engaged state, the luggage can be moved together with the pallet. The pawls engage the pallet at multiple locations, so the pawl length may be small. At this time, since a plurality of leg portions having claws are provided, it may be arranged so that they can be held in parallel when the pallet is moved up and down, and three-point support may be used, but generally, the claws are placed at four corners of the pallet. Can be engaged. Therefore, when stacking palletizing luggage in the warehouse, it is sufficient that there is an insertion space for the claw-like leg portion between the adjacent luggage, which is significantly smaller than the pallet plane size. As a result, the palletizing luggage can be stacked in a state in which the dead space between the luggage rows is significantly reduced, and the storage capacity can be significantly improved compared to the conventional case.

In this case, it is possible to use an elevating body constructed so that the pawls can be moved in and out of the side opening of the pallet by opening and closing the legs. Even in this case, since the pawls are engaged with the pallet at a plurality of locations, the pawl length can be small and the leg opening / closing space can be reduced. Therefore, as in the case of the above configuration, the palletized luggage can be stacked in a state in which the dead space between the luggage rows is greatly reduced, and the storage capacity can be significantly improved compared to the conventional case.

Furthermore, the pawls attached to the tips of the legs attached to the lifting body can be swung to allow the pawls to move in and out of the side openings. Therefore, since the legs are not moved, it is possible to open a smaller space for arranging the loads, and thus the stacking space is expanded.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Specific embodiments of the pallet cargo handling method according to the present invention will be described in detail below with reference to the drawings.

FIG. 1 shows the structure of the main parts of a carrier device for carrying out pallet cargo handling according to the embodiment, FIG. 2 shows the overall structure, and FIG. 3 is a plan view of the palletizing bag 10 in a stacked state.
As shown in these figures, the pallet transporter
The palletizing luggage 10 is arranged in a planar matrix in the entire area of the warehouse and can be stacked in multiple stages. Therefore, when the luggage loading area is set to a rectangular shape, the traveling rails 12 are laid along a pair of opposite side portions of the rectangular area, and the girders that can travel along the rails 12 at the ceiling portion of the area. 14 are provided. The rails 12 are laid at a high place by the pillars 15 erected on the floor, but this can also be laid by using a warehouse ceiling beam. This allows the girder 14 to move forward and backward above the loading area, but the trolley 16 is further mounted on the girder 14, and the trolley 16 can be moved laterally along the girder 14. Therefore, as the girder 14 moves, the trolley 1
By moving 6 the trolley 16 can assume any position on the plane above the loading area. In addition, the trolley 16 that can freely travel and move in a two-dimensional plane along such a ceiling surface has a lifting tool 18 as a lifting body.
Is attached, which can be moved up and down by a wire winding means (not shown) attached to the trolley 16. As a result, the hanger 18 can be moved three-dimensionally,
It can be moved to any position in the area of the loading space.

The hanger 18 has a flat plate structure or a frame structure having a plane area of a size slightly larger than the plane size of the palletizing luggage 10 to be lifted. Then, the suspension 2 has a leg portion 2 extended and hung toward the side of the pallet 20 of the palletizing luggage 10 in particular.
2 is attached.

As shown in FIG. 4, the pallet 20 is composed of an upper flat plate 24, a lower flat plate 26, and a plurality of rib members 28 arranged between the upper flat plate 24 and the lower flat plate 26. An insertion space 30 such as a fork claw is opened in the portion. In the pallet 20 used in this embodiment, the reinforcing members 3 made of an iron plate or the like are provided in the insertion spaces 30 at the left and right ends.
2 is formed in an inverted U shape and attached to increase the strength of the inner surface portions of the upper flat plate 24 and the corresponding rib material 28.

In order to lift the pallet 20 as described above, the leg portions 22 attached to the hanging tool 18 are inserted in the insertion space 3
It is designed to hang at four places so as to face both end portions on the opening side of 0. Then, as shown in FIG. 1, a claw 34 that can be inserted into the insertion space 30 is formed at the tip of the leg portion 22. Since the claws 34 are formed on each leg 22, the claws 34 are located at both ends of a pair of opposing sides where the insertion space 30 of the pallet 20 is opened. The pawl 34 is engaged with and disengaged from the pallet 20, which is realized by adjusting the distance between the legs 22. For this reason, the leg portions 22 are attached so as to be movable along the surface of the hoisting gear at a position where the leg portions 22 are attached to the hoisting gear 18, and a wire is connected to each leg portion 22 and is connected to a drum (not shown). Is configured to be variable in the distance between the pair of leg portions 22 by forward and reverse driving. This allows the pair of legs 22 to move in parallel to change the distance, and the tip claw 34 can be moved in and out of the side surface insertion space 30 of the pallet 20.

A distance sensor 36 such as an optical sensor is attached to the tip of the claw 34 so that the claw 34 can be inserted into the side surface insertion space 3 of the pallet 20 when the hanger 18 is lowered.
The fact that the position has reached 0 is detected. As a result, it can be determined that the claw 34 can be engaged with the pallet 20, and the work can be automated.

In the cargo handling work using the pallet carrier configured as described above, the controller of the main control operates the driving unit of the carrier, and various data are displayed on the screen while data is appropriately input by the keyboard. Will be done. An example of this work will be described with reference to the flowchart of FIG. First, the position of the pallet 20 to be unloaded is entered from the keyboard (step 100). The girder 14 and the trolley 16 are moved based on the input data, and while the position detection is performed by the sensors provided in their drive systems, the planar movement is stopped at the set position (step 102). After the trolley 16 has stopped at the set position, the lifting tool 18 is lowered toward the target palletizing luggage 10. A sensor 36 is provided on the claw 34 provided at the tip of the leg portion 22 equipped to the hanging tool 18,
Since the detection signal is sent to the controller when the claw 34 coincides with the side surface insertion space 30 of the pallet 20, the controller stops the descent of the hanging tool 18 (step 104).

After that, the claws 34 are inserted into the pallet insertion space 30 by driving so that the distance between the facing leg portions 22 becomes smaller. As a result, the palletizing luggage 10 is held, and the lifting tool 18 is raised to the uppermost position (step 106). After that, the girder 14 and the trolley 16 are drive-controlled to move to a position above the loading / unloading table 38 (see FIG. 3) provided at the loading port in order to move toward the loading port that is set in advance at a predetermined position (see FIG. Step 108). After being stopped at the loading / unloading table 38, the hanger 18 is moved down to place the palletizing luggage 10 on the table (step 11
0), the leg portion 22 of the suspending tool 18 is moved to the outside to disengage the claw 34 from the pallet 20, and the suspending tool 18 is raised to the uppermost position to complete the work (step 112).

In such an embodiment, the palletizing luggage 1
As shown in FIG. 3, the arrangement of 0 suffices for the gap between the adjacent palletizing luggages 10 to be a space where the legs 22 can be inserted and the claws 34 can be engaged with and disengaged from the pallet insertion space 30. . Since the pawls 34 engage at the four corners of the pallet 20, particularly at the four places on each side where the insertion space 30 is opened, a total of four places, the length of the pawls 34 may be small. Therefore, the arrangement interval of the palletizing luggage 10 can be made very small. Therefore, the planar loading area can be increased while efficiently stacking the loads 10 in the loading area in the warehouse. In particular, since it is not necessary to provide a large passage space between the packages 10, the storage amount of the packages 10 can be increased.

In the above embodiment, the leg 22 is moved by the suspending tool 18 to engage and disengage the claw 34. However, as shown in FIG. It can be opened and closed. Further, as shown in FIG. 2B, the leg 22 or the claw 34 can be swung,
It is also possible to engage and disengage the pawl 34 from the pallet 20 by a rotating operation.

[0020]

As described above, according to the present invention,
A method of directly placing a pallet loaded with goods in a warehouse in a flat state, which is hung up and down by an overhead traveling body movable along a two-dimensional plane and extended and hung down toward a side surface of the pallet. Using a lifting body having a plurality of legs and a claw that is inserted into and removed from the side face opening of the pallet on the legs, the claws of the loading pallet can be inserted into the legs of the lifting body. The palletized cargo can be loaded and unloaded in the vertical and horizontal rows and columns so that palletizing cargo can be loaded and unloaded efficiently in a limited space in the warehouse. In addition, the excellent effect that the carry-in / out can be easily performed is obtained.

[Brief description of drawings]

FIG. 1 is a side view of essential parts of a carrying device used in a pallet cargo handling method according to an embodiment.

FIG. 2 is an overall side view of the transfer device.

FIG. 3 is an overall plan view of the transfer device.

FIG. 4 is a side view of a pallet.

FIG. 5 is a flowchart of a shipping operation according to an embodiment.

FIG. 6 is a schematic explanatory view of a main part showing another example of the transport device.

[Explanation of symbols]

 10 Palletizing Luggage 12 Rail 14 Girder 15 Strut 16 Trolley 18 Lifting Tool 20 Pallet 22 Leg 24 Upper Flat Plate 26 Lower Flat Plate 28 Rib 30 Insert Space 32 Reinforcement Member 34 Claw 36 Sensor

Claims (1)

[Claims] 1. A method for directly loading a pallet loaded with goods in a warehouse in a flat manner, which is hung on a ceiling traveling body movable along a two-dimensional plane so that the pallet can be hung vertically on a side surface of the pallet. An elevating body including a plurality of legs that are extended and hung downwardly and claws that are inserted into and removed from the pallet side opening is used in the legs, and the flat laying interval of the loading pallet is inserted into the legs of the elevating body. A pallet cargo handling method characterized in that direct loading and stacking are carried out in a matrix arrangement vertically and horizontally in such a manner that the pawls can be moved in and out of a side opening of the pallet.