JPH0348083B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a stocker suitable for storing long and heavy objects made of steel.

Traditionally, shelves for storing long, heavy items such as steel materials have generally been used with shelves divided into several levels, but loading and unloading items to and from each shelf is not easy due to the length of the long, heavy items. However, it was not possible to store it efficiently because it required labor and was accompanied by danger.

In view of the above-mentioned circumstances, the present invention aims to provide a stocker that has a simple structure, can safely and reliably take in and out of long objects such as steel materials, and can efficiently store long objects such as steel materials. A plurality of pallet loading shelves on which storage pallets can be placed are formed vertically between a pair of upright support columns, and guide protrusions are provided extending vertically on opposing walls of the pair of support columns. At the same time, the length of the storage pallet is shorter than the distance between the two supports, and support flanges are provided protrudingly from both ends of the storage pallet in the longitudinal direction. The frame has a U-shaped planar shape extending from both left and right ends, and a pair of guide rollers is attached to the outer surface of the longitudinal end of each side frame, and each support roller is installed between the guide rollers. an elevating frame whose side frames are positioned outwardly from support flanges of a storage pallet placed on a pallet shelf and supported vertically movably between support columns by fitting the guide protrusions of the columns; A lifting frame elevating and lowering drive means for vertically driving the elevating frame, and a hoisting frame that is slidably fitted into horizontal grooves formed along the longitudinal direction on opposing surfaces of both side frames of the elevating frame and placed on a pallet loading shelf. A pallet support and conveyance member supported by an elevating frame so as to be movable between a position where it can engage with a support flange of a storage pallet and a position where it cannot engage with the support flange; A pallet loading/unloading drive means that reciprocates along the frame, and the lifting frame is moved by positioning the pallet conveying member at a position where it can engage with the support flange of the storage pallet placed on the pallet mounting shelf. By raising the pallet, the support flange of the storage pallet is engaged and held on the pallet transport member, and the storage pallet is floated from the pallet mounting shelf, and by the movement of the pallet transport member, the held storage pallet is placed on the pallet mounting shelf. It is moved forward and can be raised and lowered by lifting and lowering the lifting frame.

Hereinafter, the present invention will be explained in detail based on illustrated embodiments.

The illustrated stocker has a vertically movable elevating frame 8 which forms a plurality of stages of pallet mounting shelves 2 in the vertical direction between a pair of plate-shaped support columns 1 and 1 that are erected at a predetermined distance apart. are attached to the opposing inner sides of plate-shaped support columns 1, 1.

The pallet mounting shelf 2... is constructed by protruding support rods 4 from each intersection of support frames 3 arranged in a grid pattern between one side of the support columns 1, 1.
Storage pallets 5 are placed on the support rods 4 of each stage. Each storage pallet 5 has support rods 4...
It has a flat plate shape with a fitting recess 6 formed on the bottom thereof, and flange portions 7, 7 are provided at both left and right ends in the longitudinal direction, respectively, as support flanges for mounting on a pallet conveying member 13, which will be described later. , and protective stoppers 5a for regulating the position of stored items are provided protruding from the front and rear sides thereof.

The elevating frame 8 is a U-shaped frame in plan view, with side frames 8a, 8a having a length more than twice the width of the storage pallet 5 extending at both left and right ends.
A guide roller mounting plate 8C on which guide rollers 8b and 8b are supported is provided on the outer surface in the longitudinal direction of a and 8a.
are attached, and the guide rollers 8b, 8
b are inserted into the guide holes 1a, 1a formed in the inner wall surfaces of the opposing support columns 1, 1, respectively.
a, 1a, and is supported by support columns 1, 1 so as to be movable up and down along guide grooves 1a, 1a. That is, in this embodiment, the portion sandwiched between the guide grooves 1a, 1a forms a guide protrusion.

Also, wheels 10, 10 attached to the top plate 9
The other ends of the wires 11, 11 are fixed to the guide roller mounting plates 8C of the side frames 8a, 8a, and the lifting frame 8 is moved through the wires 11, 11 by the rotation of the wheels 10, 10. It is configured to be driven up and down along the inner wall surfaces of the support columns 1,1. The wheels 10, 10 are rotatably driven by a drive means (not shown) operated by hydraulic pressure from a drive hydraulic unit 16, and this drive means, wheels 10, 10 and wires 11, 11 are used to drive the elevating frame up and down. is made up of.

Horizontal grooves 12 are formed along the longitudinal direction of the opposing surfaces of the left and right side frames 8a, 8a of the lifting frame 8, and a pallet conveying member 13 as a pallet supporting conveying member is slidably fitted into the horizontal grooves 12. ing.

The pallet conveying member 13 has sprockets 1 installed in horizontal grooves 12 at both ends of the side frames 8a, 8a.
The sprockets 15 and 15 on one side are configured to rotate synchronously by a connecting rod 15b, and the sprockets 15 and 15 on one side are configured to rotate synchronously with each other by a connecting rod 15b.
5, 15, the pallet conveying members 13, 13 provided on the left and right side frames 8a, 8a move to the side frame 8.
a, 8a along the area within the pallet shelf 2 (storage pallets 5 placed on the pallet shelf 2)
It is possible to reciprocate between a position where it can engage with the flange parts 7, 7) and a position where it does not engage with the flange parts 7, 7 on the front side of the elevating frame 8. The connecting rod 15b (that is, the sprockets 15, 15) is rotatably driven by a driving means (not shown) operated by hydraulic pressure from the driving hydraulic unit 16, and the connecting rod 15b, the sprockets 15, 15 and the endless chain 14 constitute a pallet loading/unloading drive means.

Furthermore, a pair of phototube detection devices 18, 18 are installed at the top of the opposing side frames 8a, 8a of the lifting frame 8, and when the height of the stored object exceeds a predetermined height, the sprocket 15 is configured to stop driving.

Note that 17 is an operation control panel for the hydraulic unit 16 that has a built-in microcomputer.

In the stocker configured as described above, the lifting frame 8 is raised to the desired stage of the pallet loading shelf 2, and the pallet transport members 13, 13 are moved to the rear and placed under the flanges 7, 7 of the storage pallet 5. After the pallet is positioned, the lifting frame 8 is further raised a little, so that the pallet conveying members 13, 13 engage with the flanges 7, 7, support the pallet 5, and remove the pallet 5 from the pallet mounting shelf 2. The pallet conveying members 13, 13 are set in a free state, and in that state,
By moving it to the front, it is positioned outside between the support columns 1, 1, and the elevating frame 8 is lowered to the lowest position to take in and out the stored items.

Then, by reversing the steps above, create storage pallet 5.
The work is completed by returning the pallet to the pallet shelf 2.

As described above, according to the stocker of the present invention, there is no need for the difficult work of handling long heavy objects such as steel materials at high places, and the storage can be carried out safely and reliably without the risk of the stored objects collapsing or falling. This not only makes the work easier, but also allows efficient storage in terms of space.

In addition, the lifting frame has a U-shaped planar shape with side frames having a length more than twice the width of the storage pallet extending on both left and right ends, and pallet supporting and conveying members are movably provided on both sides of the frame. A structure for moving a storage pallet between a position where it is placed on a pallet placement shelf and a position where it is moved forward from the pallet placement shelf can be easily configured. Furthermore, the elevating frame is configured to move up and down with a guide protrusion (a portion formed between the guide grooves) being sandwiched between a pair of guide rollers attached to the outer surface of the longitudinal end of the side frame of the elevating frame. By doing so, the configuration can be simplified by combining the two functions of maintaining the horizontal state of the elevating frame and guiding the vertical movement.

In other words, when loading and unloading pallets, a complex structure such as installing a chassis that can move in the direction of loading and unloading the pallets and providing an engaging portion for the pallets on the chassis is not required, resulting in an extremely simple configuration. .

[Brief explanation of drawings]

FIG. 1 is a schematic front view showing an embodiment of the stocker according to the present invention, and FIG. 2 is a sectional view taken along the line 3.
The figure is a perspective view of the main part, and FIG. 4 is a perspective view of the main part showing the vicinity of the pallet conveying member. 1...Support column, 2...Pallet mounting shelf, 5...
Storage pallet, 8... Lifting frame, 8a... Side frame, 8b... Guide roller, {10... Wheel,
11...Wire} (elevating frame elevating drive means),
12... Horizontal groove, 13... Pallet conveyance member (pallet support conveyance member), {14... Endless chain, 1
5... Sprocket, 15b... Connection rod (pallet loading/unloading drive means).

Claims (1)

[Scope of Claims] 1. A plurality of pallet mounting shelves on which storage pallets can be placed are formed vertically between a pair of support columns that are erected at a predetermined distance apart, and on opposite wall surfaces of the pair of support columns. The storage pallet has guide protrusions extending in the vertical direction, and the length of the storage pallet is shorter than the distance between the support columns, and support flanges are provided protruding from both ends of the storage pallet in the longitudinal direction. The frame body has a U-shape in plan view, with side frames having a length more than twice the width of the storage pallet extending from both left and right ends, and each side frame has an outer end at a longitudinal end thereof. A pair of guide rollers are attached to the side surfaces, and the guide protrusions of each of the support columns are fitted between the guide rollers, so that the storage pallet with the side frame placed on the pallet shelf is an elevating frame located outwardly from the support flange and supported vertically movably between the support columns; elevating frame elevating drive means for vertically driving the elevating frame; and opposing surfaces of both side frames of the elevating frame. a position where the storage pallet is slidably fitted into a lateral groove formed along its longitudinal direction and can engage with a support flange of the storage pallet placed on the pallet placement shelf; a pallet support conveyance member supported by the elevating frame so as to be movable between positions that cannot be moved between the pallet and A Stotzker characterized by: