JPH06312813A - Pallet handling device - Google Patents

Abstract

PURPOSE:To handle vacant pallets which have become vacant at a work station, efficiently. CONSTITUTION:A frame 8 is provided at a position adjacent to a conveyor 7 with lifter, which is provided inside of a pit 6 of a work station 3, in fore and aft direction. Height of the frame 8 is set at a lowering level of the conveyor 7 with lifter, and the frame 8 is provided with a shifter 9, which can be elevated freely. A pallet magazine 10 for housing vacant pallets in multiple stages is provided, and the pallet magazine 10 is placed on the frame 8, and vacant pallets 1 are housed in the magazine 10 in order. The pallet magazine 10 filled with the vacant pallets 1 is transferred to the conveyor 7 with lifter, and elevated for carrying.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pallet handling device for handling pallets for loading cargo at a workstation of an air cargo terminal.

[0002]

2. Description of the Related Art At an air freight terminal, for example, as shown in FIG. 7, a cargo 4 carried by a dolly 2 to a workstation 3 while being loaded on a pallet 1 in an appropriate number of stages is received. After temporarily lowering it from the front-rear direction (direction A) onto the receiving conveyor 5 installed at the position, the pallet 1 is sent to the conveyor 7 with lifter in the pit 6 formed at a position adjacent to the receiving conveyor 5 and further. , The cargo 4 is lowered into the pit 6 at this position, and the breakdown work is carried out by separating the cargo from the top one in order, and then the empty pallet 1 is removed by a forklift with long pawls. Is done. The cargo 4 may be loaded onto the receiving conveyor 5 from the left and right.

[0003]

However, in the workstation 3, handling of the empty pallet 1 after the breakdown work of the cargo 4 is one of the troublesome problems. Ie empty pallet 1
Is heavy for a worker to handle manually, but even if it is transported by a forklift, if the forklift is used every time an empty pallet 1 is generated, the congestion around the workstation will increase, and In addition, there is a problem that the productivity of the equipment is impaired.

Therefore, the present invention enables efficient transportation of empty pallets generated by breakdown work at the workstation, thereby contributing to alleviating congestion around the workstation and improving the productivity of the equipment. It is intended to provide such a pallet handling device.

[0005]

In order to solve the above-mentioned problems, the present invention places a cargo loaded on a pallet on a conveyor with lifter in a pit and performs a breakdown work. At a position adjacent to the front and rear direction of the conveyor with lifter in the work station, a pallet storage space is formed by extending the pit, and a pedestal is installed in the pallet storage space according to the descending level of the conveyor with lifter, and The rack is equipped with a shifter that can be raised and lowered, and further has a pair of left and right shelf boards for receiving and storing empty pallets on the conveyor with lifter at a position on the rack, and the shifter is vertically moved on the bottom surface. The pallet magazine is provided with a vacant space through which the pallet can pass.

Further, instead of using the pallet magazine, a pair of left and right shelves for receiving and storing empty pallets on the conveyor with lifter are provided in a displaceable manner in multiple stages, and the shifter is vertically arranged on the bottom surface. A pallet pillar having an empty space that can be passed through may be installed on the gantry.

[0007]

[Operation] Before performing the breakdown work, leave the pallet magazine on the gantry, and if an empty pallet is generated on the lifter conveyor due to the breakdown work, After raising the shifter to align with the position of the top shelf of the pallet magazine, the conveyor with lifter and the shifter are driven to store the empty pallets on the top shelf of the pallet magazine. After that, empty pallets are sequentially stored in the lower shelf in the same procedure. When the pallet magazine is full, the pallet magazine is moved to the lifter conveyor by driving the shifter and lifter conveyor, and then the lifter conveyor is lifted to the ground surface to transport the empty pallet together with the pallet magazine.

Further, when the pallet pillars are installed on the gantry, when the pallet pillars are full, the shelves of the respective stages are displaced to drop the empty pallets, and then the empty pallets are stacked. The pallets are moved together on a conveyor with lifters and lifted for transportation.

[0009]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 to 4 show an embodiment of the present invention. Similar to that shown in FIG. 7, the cargo 4 received by the receiving conveyor 5 for each pallet 1 is placed in a pit adjacent to the receiving conveyor 5. In the workstation 3 which is moved to a lifter-equipped conveyor 7 in 6 to perform a breakdown work, the pit 6 is extended to a position below the receiving conveyor 5 to form a pallet storage space 6a,
In the pallet storage space 6a, a pedestal 8 in which free rollers 16 are arranged at left and right positions on the upper surface in the front-rear direction (direction A) is installed in accordance with the descending level of the conveyor with lifter 7, and The pedestal 8 is equipped with a shifter 9 so that a pallet magazine 10 capable of stacking and storing empty pallets 1 can be placed on the pedestal 8, and the pallet magazine 10 is also provided with a lifter conveyor. 7 and the pedestal 8 can be shifted in the front-back direction.

In the pallet magazine 10, a shelf 12 for inserting and storing the pallet 1 from the front-rear direction is provided in the left and right inner portions of a frame 11 assembled in a rectangular parallelepiped in a multi-tiered manner in the vertical direction (for example, 10 (Step), and the left and right rails 13 extending in the front-rear direction are provided on the bottom surface of the frame 11 at required intervals.

The shifter 9 is capable of moving up and down, and a shift roller 15 such as a rubber tire which can be expanded and contracted in the left-right direction (direction B) with respect to the main body 14 and is driven to rotate by the main body 14. And has a structure in which the interval between the rollers 15 is widened so as to correspond to the interval between the rails 13 of the pallet magazine 10, and the main body 14 is moved from the bottom space 11a of the frame 11 of the pallet magazine 10 to The shift roller 13 can be brought into contact with the bottom surface of the pallet 1 by entering the pallet magazine 10.

In FIG. 2, reference numeral 17 denotes a carry-in conveyor for carrying the cargo 4 into the receiving conveyor 5 from the left and right directions.

Before carrying out the breakdown work of the cargo 4 at the work station 3, the lifter-equipped conveyor 7 in the pit 6 is previously raised to the ground surface as shown by the chain double-dashed line in FIG. Then, the pallet magazine 10 is placed on the conveyor 7 with lifter, and then the conveyor 7 with lifter is lowered to the position in the pit 6, and then the pallet magazine 10 is placed in the pallet storage space 6a.
It is transferred onto a pedestal 8 installed inside. In this case, the height position of the shift roller 15 is previously adjusted to the upper surface level of the free roller 16 via the main body portion 14 of the shifter 9 on the gantry 8 side, and the gap between the shift rollers 15 is set to the bottom surface portion of the pallet magazine 10. With the rails 13 aligned, the conveyor 7 with lifter is first driven to feed the pallet magazine 10 on the conveyor 7 with lifter onto the free roller 16 of the pedestal 8. The shift roller 15 is driven to feed the pallet magazine 10 to the shifter 9, and thereafter, the shift roller 15 is driven to feed the pallet magazine 10 to the inner part of the pedestal 8 and wait.

With the pallet magazine 10 standing by on the pedestal 8, breakdown work of the cargo 4 is performed on the lifter conveyor 7 in the same manner as in the prior art, whereby an empty pallet 1 is generated on the lifter conveyor 7. In this case, the upper surface level of the lifter-equipped conveyor 7 is aligned with the level of the shelf plate 12 positioned at the top of the pallet magazine 10 on standby, and the lifter-equipped conveyor 7 is driven to load the empty pallet 1 into the pallet magazine 10. Try to push it to the top position. At this time, as shown by the chain double-dashed line in FIG. 4, the main body portion 14 of the shifter 9 has a space 11a in the bottom portion of the frame 11 that constitutes the pallet magazine 10.
From the above, the shift roller 15 is brought into contact with the bottom surface of the empty pallet 1 so as to enter the pallet magazine 10 and the shift roller 15 is driven so that the empty pallet 1 is pulled into the pallet magazine 10 and stored. To do. Further, the next generated empty pallet 1 is stored on the shelf plate 12 one step lower by the same procedure, and thereafter, the empty pallet 1 is sequentially stored in the pallet magazine 10 by the same procedure.

When the pallet magazine 10 is filled with the empty pallet 1, the pallet magazine 10 is unloaded in the reverse order of the procedure when the pallet magazine 10 is loaded onto the gantry 8. That is, after the pallet magazine 10 is transferred onto the lifter-equipped conveyor 7 by the shifter 9 and the lifter-equipped conveyor 7, the lifter conveyor 7 is raised to bring the pallet magazine 10 to the ground level as shown by the chain double-dashed line in FIG. The dolly 2 is moved closer to the conveyor 7 with lifter from the front-rear direction, and the pallet magazine 10 on the conveyor 7 with lifter is transferred to the dolly 2 and conveyed. In this way, since a large number of empty pallets 1 can be temporarily stored in the pallet storage space 6a and then collectively transported, handling can be rationalized and congestion around the workstation 3 can be reduced. Therefore, the productivity can be improved.

In the above, the mount 8 and the shifter 9 are
Since the pits 6 are installed in the pallet storage space 6a below the receiving conveyor 5 in which the pits 6 are extendedly formed, no extra space is required for the shed.

Next, FIGS. 5 and 6 show another embodiment of the present invention. Similar to the above embodiment, the pedestal 8 and the shifter 9 are installed in the pallet storage space 6a in which the pit 6 is formed by extension. In the structure described above, the pallet pillar 18 is installed on the gantry 8. The pallet pillar 18 has the same basic structure as that of the pallet magazine 10. The pallet magazine 18 is attached to the column member 19 of the frame 11 so that each shelf plate 12 can be rotated in the vertical direction about a shaft 20. The lever portion 12a extended to the plate 12 is connected to the outside of the frame 11 by a rod 21 extending in the vertical direction, and the rod 2
By moving 1 vertically, each shelf plate 12 can be simultaneously rotationally displaced.

In the case of the embodiment shown in FIGS. 5 and 6, the pedestal 8 is used.
The operation of storing the empty pallet 1 in the pallet pillar 18 fixed above is performed in the same manner as in the above-described embodiment, and when the pallet pillar 18 is full, the rod 21 is removed as shown in FIG. By pulling up, each shelf 12 is simultaneously rotationally displaced from the position shown by the solid line to the position shown by the chain double-dashed line. As a result, the empty pallets 1 placed on the respective shelves 12 fall by their own weight and become stacked. Then, the shift roller 15 of the shifter 9 is attached to the bottom surface of the empty pallet 1 located at the bottom.
The empty pallets 1 are moved to the lifter-equipped conveyor 7 in the stacked state by abutting and driving them, and the lifter-equipped conveyor 7 is further raised and conveyed by the dolly 2. Therefore, only the empty pallets 1 can be collectively transported.

The present invention is not limited to the above embodiment, but in the embodiments of FIGS. 5 and 6, the case where the left and right shelf plates 12 are displaced in the vertical direction is shown. It may be configured to be displaced in the left-right direction,
Of course, various changes can be made without departing from the scope of the present invention.

[0021]

As described above, according to the pallet handling device of the present invention, empty pallets can be sequentially stored in the pallet magazine mounted on the pedestal using the conveyor with lifter and the shifter. In addition, the pallet magazine that is full of empty pallets can be carried out, so it is possible to streamline handling and reduce congestion around workstations compared to the conventional method in which empty pallets are transported each time. In addition to being able to improve productivity, it is possible to transport only empty pallets in a stacked state by installing a pallet piler on a stand instead of a portable pallet magazine. Exert the effect.

[Brief description of drawings]

FIG. 1 is a side view of a workstation showing an embodiment of a pallet handling device of the present invention.

FIG. 2 is a view on arrow II in FIG.

FIG. 3 is a view on arrow III in FIG.

FIG. 4 is a view on arrow IV in FIG.

FIG. 5 is a schematic view showing another embodiment of the present invention.

FIG. 6 is a partially enlarged front view of the pallet pillar shown in FIG.

FIG. 7 is a schematic view showing an example of how to handle cargo at an air cargo terminal.

[Explanation of symbols]

 1 Pallet 3 Workstation 4 Cargo 6 Pit 6a Pallet storage space 7 Conveyor with lifter 8 Conveyor 9 Stand 9 Shifter 10 Pallet magazine 11a Empty space 12 Shelf 18 Pallet pillar

Front page continuation (72) Inventor Masao Ezaki 1-19-10 Mori, Koto-ku, Tokyo Ema Tadashi Building Ishikawajima Harima Heavy Industries, Ltd. Koto Office (72) Inventor Masato Yokoyama 2-4-Hiyoshidai, Otsu, Shiga Prefecture 1

Claims (2)

[Claims] 1. A pit at a position adjacent to the lifter-equipped conveyor in a workstation where a cargo loaded on a pallet is placed on a lifter-equipped conveyor in the pit to perform breakdown work. To form a pallet storage space, a pedestal is installed in the pallet storage space in accordance with the descending level of the conveyor with lifter, and the pedestal is provided with a shifter capable of moving up and down. At the position of, a pallet magazine having a pair of left and right shelf plates for receiving and storing empty pallets on the conveyor with lifter in multiple stages and a pallet magazine having a bottom through which the shifter can pass vertically A pallet handling device having a configuration. 2. A pit at a position adjacent to the lifter-equipped conveyor in a workstation where a cargo loaded on a pallet is placed on a lifter-equipped conveyor in the pit to perform breakdown work. To form a pallet storage space, a pedestal is installed in the pallet storage space according to the descending level of the conveyor with lifter, and the pedestal is provided with a shifter capable of moving up and down. A pallet pillar having a pair of left and right shelf plates for receiving and storing empty pallets on a conveyor in multiple stages and capable of passing through the shifter in the vertical direction on the bottom part of the pallet pillar on the pedestal. A pallet handling device characterized by having an installed configuration.