JPS6010962Y2 - Palette truck in multi-storey warehouse - Google Patents

Description

[Detailed description of the invention] This invention was developed to install a pallet transport device on the top surface of the lid plate in a multi-story warehouse that is equipped with a stacker crane and handles cargo in units of pallets on high-rise pallet racks. Pallets equipped with running guides are loaded and unloaded using a pallet transport device such as a transport robot, and pallet racks are constructed so that they can accommodate at least multiple stages of pallets in the height direction. Increase efficiency.

Generally, in multi-story warehouses equipped with stacker cranes, pallet racks are arranged like a high-rise building with the operating path of the stacker cranes sandwiched between them, and each pallet rack is configured to accommodate one pallet of cargo. ing.

For this reason, not only is the pallet storage area restricted by the space occupied by the pallet rack components, but also idle space is created between pallets, reducing the overall pallet storage efficiency of the multi-level warehouse. The current situation is that

Of course, when carrying pallets between the loading platform of a stacker crane and a pallet rack and loading and unloading them using a fork device, it is necessary to store multiple rows of pallets in the frontage direction of the pallet rack or to store multiple pallets in the height direction. It is possible to stack pallets in rows and store them, but storing multiple rows of pallets in the depth direction requires a longer stroke of the fork, so the cross-sectional shape of the fork has to be large due to its design strength. There was a drawback.

In addition, when pallets are transported by a transport device such as a transport robot equipped with a self-propelled mechanism, by installing a travel guide for the transport device, multiple rows of pallets can be transported in the width direction and the depth direction of the pallet rack. Although it is easy to configure the pallets so that they can be accommodated, there is a problem in that pallets cannot be stacked in the height direction.

As described above, it has been difficult to improve the pallet accommodating efficiency of pallet racks as long as the conventional apparatus is used to transport pallets.

This invention solves such problems and provides a pallet rack for a multi-level warehouse that can accommodate a plurality of pallets in all three spaces of the pallet rack's frontage, depth, and height. .

The purpose of this invention is to use a movable pallet conveying device to move pallets with the traveling guide of the pallet conveying device attached to the upper surface of the lid plate into and out of the pallet rack, at least in the height direction of the pallet rack. The purpose of this invention is to dramatically improve the pallet storage efficiency of pallet racks in multi-level warehouses; The purpose of this invention is to reduce the construction cost of a multi-level warehouse by reducing the number of structural members.A further object of this invention is to allow pallets to be loaded and unloaded into and out of pallet racks easily and quickly.

That is, in this invention, as in the illustrated embodiment, a pallet conveying device 6 is provided that can freely travel between a loading platform 3 of a stacker crane and a pallet rack 2, and a traveling guide of the pallet conveying device is provided on a floor member 2a of the pallet rack. In a multi-story warehouse in which a travel guide 11 is separately installed on the upper surface of the lid plate 9, the pallet 4 is moved in and out of the pallet rack 2 by the pallet transport device 6, so that the pallet rack 2 is moved at least in its height direction. The present invention relates to a pallet rack for a multi-level warehouse characterized by being configured to have a space capable of accommodating multiple stages of pallets.

An embodiment of this invention will be described with reference to the drawings.

Figures 1 and 2 show a part of a pallet rack for a multi-level warehouse constructed according to this invention, with pallet racks having multiple compartments in the vertical and horizontal directions on both sides of the operating path 1 of the stacker crane. 2 is arranged like a skyscraper,
Pallets 4 are loaded into and taken out of each pallet rack by raising and lowering a loading platform 3 of a stacker crane and using an appropriate conveyance device.

Reference numeral 5 denotes a mast which is attached to a cart (not shown) running on guide rails stretched over the ceiling and floor of the multi-story warehouse, and supports the stacker crane loading platform 3 so as to be able to move up and down.

A pallet transport device 6 for loading and unloading pallets 4 between the loading platform 3 of the stacker crane and the pallet rack 2 is equipped with a pallet mounting table that can move up and down and wheels 7 that can rotate freely on the top surface and both sides of the main body. , is a so-called transfer robot that operates these drive control mechanisms built into the main body by remote control.The top surface of the pallet mounting table is lower than the bottom height of the pallet, so it is difficult to sneak into the bottom of the pallet. The pallet loading platform is raised, and while the pallet is lifted, the wheels 7 are driven to rotate, and when the pallet loading platform is moved between the loading platform of the stacker crane and the pallet rack and reaches a predetermined position, the pallet loading platform is lowered to transport the pallet. It is configured to sell.

Traveling guides 8 of the pallet transport device are installed on the loading platform 3 of the stacker crane and the floor member 2a of the pallet rack 2, respectively.

As this travel guide, for example, a rail that is compatible with the wheel gauge of the pallet transport device is suitable, and the pallet transport device 6 travels with its wheels mounted on this rail.

In the illustrated example, the size of one section of the pallet rack 2 is as follows:
A four-lane rail is laid in the frontage direction A to accommodate four rows of pallets, while the depth direction B can accommodate two front and rear rows of pallets, and the height direction C has two rails above and below. The tiers are configured to accommodate pallets.

The pallets 4 accommodated in such a pallet rack are of a so-called box type, as details thereof are shown in FIG. A vertical side plate is provided on the upper part of the loading surface, and a cover plate 9 is attached to the top, and cargo 10 is stored on the loading surface.

Then, the travel guide 1 of the pallet conveying device is placed on the upper surface of the cover plate 9.
1 is attached so that the pallet conveying device can run on the cover plate 9 of the pallet.

The operation for carrying in the pallet rack two pallets of this invention having the above-mentioned structure is carried out as follows.

The pallets 4 transported from the handling room to the multi-story warehouse by an appropriate transport device are placed on the loading platform 3 of a stacker crane by appropriate means, and the stacker crane is operated to move the loading platform 3 onto the floor member 2a of the pallet rack in a predetermined section. It stops in front, and the height and lateral position of each travel guide 8 are made to match.

Therefore, the pallet mounting table of the pallet conveying device 6 positioned below the pallet 4 is raised on the loading platform 3, the pallet is slightly lifted, the wheels 7 are driven to rotate, the pallet is advanced along the traveling guide 8, and the pallet is moved forward along the traveling guide 8. It stops at the rear row position in the depth direction B of the rack, lowers the pallet mounting table, and unloads the pallet to a predetermined position.

The pallet transport device 6 is returned to the same position or onto the loading platform 3, and the next pallet is unloaded to the position in the front row in the pallet rack depth direction B by the same operation as described above.

In this case, the positions of the pallets unloaded in the rear row are regulated so that they are parallel to each other in a straight line with the side direction, so that there is no misalignment between the ends of the travel guides 11 attached to the upper surface of the cover plates of the respective pallets. Moreover, it is desirable that both travel guides remain straight and parallel.

By repeating this operation several times in the frontage direction A, a total of eight pallets are loaded onto the floor member of the pallet rack in four rows and two rows in the frontage and depth directions, respectively.

Next, pallets are further stacked on top of the pallets carried onto the floor member of the pallet rack by the above operation, and two stages of pallets are carried in both the height direction C of the pallet rack and the front and rear rows.

In this operation, first, the pallet transport device 6 is returned to the loading platform 3 of the stacker crane, and then the loading platform 3 on which the pallet 4 is mounted is attached to the upper surface of the lid plate of the pallet housed on the floor member of the pallet rack. The pallet conveying device 6 is stopped after matching its height and lateral position with the traveling guide 11, which is the main travel guide, and the pallet conveying device 6 is caused to travel along the traveling guide 11, and the same operation as described above is performed.

When the pallet conveying device 6 passes through the loading platform 3 and the pallet or an interruption in the traveling guide between the pallets, a suitable joint is provided between the traveling guides to make the traveling smooth.

In this way, a total of 16a pallets can be accommodated in the pallet rack, but when carrying out the pallets from the pallet rack, the above-described order of operations may be reversed.

In this invention, as described above, a pallet with a traveling guide for a pallet conveying device attached to the upper surface of the cover plate is loaded into and taken out of a pallet rack by a movable pallet conveying device.

Therefore, it is possible to accommodate multiple stages of pallets in the height direction of the pallet rack extremely easily without requiring any design changes to the conventional pallet transport device.

Additionally, by accommodating multiple rows of pallets in the frontage and depth directions as needed, the space that can accommodate pallets in one section of pallet racks can be expanded more than before, dramatically improving pallet accommodating efficiency in multi-level warehouses. Not only that, the construction cost of multi-level warehouses will be significantly reduced.

[Brief explanation of drawings]

Fig. 1 is a plan view showing part of a multi-level warehouse in which pallet racks of this invention are arranged, Fig. 2 is a side sectional view thereof, and Fig. 3
The figure is a perspective view showing an embodiment of the pallet accommodated in the pallet rack of this invention. In the figure, 2 is a pallet rack, 3 is a loading platform of a stacker crane, 4 is a pallet, 6 is a pallet transport device, 8 is a running guide installed on the pallet rack, 9 is a pallet cover plate,
11 are running guides attached to the pallet lid plate, A, B,
C is the frontage direction and depth direction of the pallet rack, respectively.
It is in the height direction.

Claims (1)

[Scope of utility model registration request] In a multi-level warehouse, a pallet transport device that can run freely between the loading platform of a stacker crane and a pallet rack is installed, and a travel guide for the pallet transport device is installed on the floor member of the pallet rack, and a separate travel guide is attached to the top surface of the lid plate. A pallet for a multi-level warehouse, characterized in that the pallet is moved in and out of the pallet rack by the pallet transport device, and the pallet rack is configured to have a space capable of accommodating a plurality of stages of pallets at least in its height direction. rack.