JPH09255105A - Rack type warehouse system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a rack type warehouse system which can change the area of a storage part easily in a short time even if style of packing changes. SOLUTION: This system is provided with a plurality of stationary shelves 11 fitted on the storage part 5 of a package, a movable shelves 12 detachably- fitted on the storage part 5, a stacker crane which moves along the storage part 5 to receive and deliver the package from/to the stationary shelf 11 or the movable shelf 12, and a movable fork which is fitted on the stacker crane and holds the package or the movable shelf 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rack-type warehouse system capable of flexibly coping with changes in the packing form to be stored.

[0002]

2. Description of the Related Art As shown in FIG. 11, as a rack type warehouse system for storing loads 3 placed on a pallet 2,
A storage unit 5 which is an assembly of racks 6 formed in a lattice shape from the column members 1 and the pallet support members 4 is arranged to face each other, and a stacker crane 7 is movably provided in the horizontal direction therebetween. Are known. A frame 8 of the stacker crane 7 is provided with a cage frame 9 that moves up and down along the storage section 5. By this movement in two directions, the stacker crane 7 can move the load 3 together with the pallet 2 to the pallet support member 4 at a desired location.

The cage frame 9 is provided with a flat plate-like fork 10 on which the pallet 2 is placed, so that the pallet 2 can be loaded and unloaded by the pallet support member 4 at a desired location. Specifically, the pallet support member 4 is shown in FIG.
As shown in FIG. 2, on the pillars 1 provided at equal intervals at a distance slightly longer than the length of the pallet 2 to be used, an interval L ₁ slightly higher than the predetermined height between the luggage 3 and the pallet 2 is set.
It is provided in. The pallet support member 4 extends in the horizontal direction by a predetermined length L ₂ and is fixed to the pillar members 1a and 1b by welding or bolts. Thus,
A pallet support member 4 is attached between the pillars 1 so as to face each other. Then, the flat plate-shaped fork 10 expands and contracts between these pallet support members 4.

When storing the luggage, first, the luggage 3 is carried to the transshipment shelf 17 together with the pallet 2 by a forklift or the like. Then, the stacker crane 7 is moved there, and the flat plate-shaped fork 10 is extended below the pallet 2 to be dipped therein. Then, the cage frame 9 is raised and the pallet 2 is lifted by the flat plate-like fork 10. Next, the flat plate-shaped fork 10 is shortened, and the luggage 3 is pulled into the cage frame 9, and is moved to the pallet support member 4 at a desired location by horizontal movement of the stacker crane 7 and vertical movement of the cage frame 9. Then, between the pallet support members 4, the flat plate-shaped fork 10 is extended, the cage frame 9 is lowered to move the flat plate-shaped fork 10 downward, and both ends of the pallet 2 are locked to the pallet support member 4. Then, the flat plate-like fork 10 is shortened and returned to the inside of the cage frame 9. Further, when the luggage 3 is taken out, the operation reverse to the above is performed.

[0005]

In the rack type warehouse as described above, the packing form to be stored at the time of planning is defined, and the racks 6 (intervals of the pallet supporting members 4) are assembled in a shape corresponding to the packing form. However, the packages handled often change over the years. The package size is smaller and the package height is L
_If it is lower than ₁ , storage space is wasted. Further, when the package size becomes large and the package height becomes higher than L ₁ , the rack 6
You may not be able to enter through the opening. In order to deal with these problems, the pillar material 1 of the rack 6, the pallet support member 4, and the like must all be modified, which requires a great deal of cost and time.

[0006] Therefore, an object of the present invention is to provide a rack type warehouse system which can easily change the opening of the rack 6 in a short time even if the package shape changes.

[0007]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention provides a plurality of fixed shelves provided in a storage portion for luggage, a movable shelf detachably attached to the storage portions, and these fixed shelves. Alternatively, the stacker crane includes a stacker crane that moves along the storage unit to transfer the luggage to the movable shelf, and a movable fork provided on the stacker crane to hold the luggage or the movable shelf.

According to the above construction, the movable shelves are appropriately attached and detached by the movable fork of the stacker crane,
The opening of the rack can be easily changed in a short time due to the change in the packing style.

Further, assuming that the movable fork is provided so as to be movable and rotatable from the stacker crane side to the storage section side, the load held by the movable fork is pulled into the stacker crane to load the load. The center of gravity can be matched with the traveling axis of the stacker crane,
Stable traveling of the crane can be performed.

If the movable shelves are arranged alternately with the fixed shelves, many fixed shelves capable of supporting the load applied to the rack can be arranged, so that the strength of the rack can be improved. It is possible to form a storage part having a wide frontage with a thinner column material.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the accompanying drawings.

As shown in FIG. 1, the storage section 5 in this embodiment serves both as a pillar member 1, a structural horizontal member for connecting the pillar members 1, and a shelf on which the luggage 3 is placed. The pillar 1 for supporting both ends of the fixed shelf 11 and the movable shelf 12
The shelf fixing member 13 attached to the shelf fixing member 13 and the movable shelf 12 that is detachably attached to the shelf fixing member 13 are mainly configured.

The pillar 1 has sufficient strength and extends vertically from the floor of the warehouse to the ceiling. The pillar members 1 are arranged along the traveling direction of the stacker crane 18 with a space for storing three loads 3 side by side, and the traveling direction of the stacker crane 18 and the orthogonal direction (see FIG. 1).
Two rows are provided on the front and back of the paper. Then, the fixed shelf 11 is horizontally fixed by welding or bolts so as to fix the adjacent column members 1 to each other. The fixed shelves 11 are provided at equal heights in the vertical direction at a height at which tall luggage 3a can be stored. And these pillar materials 1
With the fixed shelf 11, the rack 6 on which the pallet 2 is placed is configured in a grid shape.

A shelf fixing member 13 is provided on the column member 1 at a substantially middle portion in the vertical direction of the rack 6. The shelf fixing member 13 extends horizontally from the front pillar material 1 in FIG. 1 to the outer pillar material 1 (not shown), and is fixed to the pillar material 1 by bolts or welding. Both ends of the movable shelf 12 are locked onto these shelf fixing members 13, and the movable shelf 12 is engaged with the pillar 1.

Although not shown, the shelf fixing member 1
A convex portion is provided on the upper surface of 3, and a concave portion is provided on the lower surface of the movable shelf 12 in a shape corresponding to the convex portion. The convex portion and the concave portion are engaged with each other by the weight of the movable shelf 12.

The movable shelf 12 has a width slightly smaller than the width of the opening of the rack 6, and the depth thereof is formed in the same manner as the length from the column member 1 on the front side in the drawing to the column member 1 on the outside (not shown). ing. By dividing the fixed shelf 11 by the movable shelf 12, it is possible to store the short luggage 3b in two stages.

The unused movable shelves 12 are collectively stored in the fixed shelf 11 at the back, which is less used. At this time, in order to make it easy to take in and out the movable shelf 12, the fork claw portion 14
In order to form a gap 15 for the insertion of a bar, a rod-shaped member 16 having a quadrangular cross section is provided on the upper surfaces of the fixed shelf 11 and the movable shelf 12.
Is provided.

The rod-shaped member 16 is provided at both ends of the shelves 11 and 12 and in an intermediate portion along the loading / unloading direction of the luggage 3 at the luggage 3 side.
There are a total of four in two places between them, and they also serve as a guide for the luggage 3. The gap 15 thus formed has a height that allows the claw portion 14 of the fork to be inserted. Therefore, even if a plurality of movable shelves 12 are stacked on the fixed shelf 11 and the shelf fixing member 13, they can be easily moved using the forks.

By alternately forming the fixed shelves 11 and the movable shelves 12, sufficient rigidity can be expected. That is, the fixed shelf 11 not only loads the luggage 3 but also serves as a horizontal structural member for connecting and fixing the pillar members 1 to each other. In addition, a sprinkler can be installed on the fixed shelf 11 to exert an effect on fire fighting.

Although not shown in FIG. 1, the storage section 5
Are placed on both sides of the stacker crane, as before, along with it.

Next, as shown in FIG. 2, the stacker crane 18 is formed between the ceiling side rails 19a and the floor side rails 19b, which are provided in parallel along the storage section 5, and the upper portion of the frame body is formed. 20a and the ceiling side rail 19a, and the frame lower part 20b and the floor side rail 19b are respectively joined movably. The frame upper portion 20a and the frame lower portion 20b are formed to have substantially the same length, and their ends are joined by two frame pillar portions 20c to form an integral rectangular body to form the frame 20. .

The frame 20 extends from the ceiling side rail 19a to the floor side rail 19b and is driven by the drive unit 21.
Move along the storage section 5. A cage frame 22 that moves in the vertical direction is provided inside the frame body 20, and a guide rail 23 that serves as a guide for moving the cage frame 22 is provided inside the two frame body column portions 20c. . Then, the cage frame 22 is moved by the drive unit 24 along the guide rail 23 via the wire 25.

Then, in the cage frame 22,
A movable fork 26 that is movable from the cage frame 22 to the storage unit 5 side and is rotatable is provided. The cage frame 22 is formed in a box shape, and two rail receivers 28 that rotatably support the rails 27 of the movable forks 26 are provided at upper portions near both ends in the longitudinal direction. The rail 27 is fixed in three directions of 90 ° in the horizontal direction with respect to the ceiling side rail 19a so as to face the two adjacent racks 6 and in three directions parallel to the ceiling side rail 19a. Has been done.

The movable fork 26 has a rail 27 at its upper part.
It is movably supported by and can be moved horizontally along the rail 27. Further, the movable fork 26 has two claws extending in the horizontal direction at the bottom. Then, the rail 27 is directed toward the rack 6 and the movable fork 26 is moved in the direction in which the claws are directed, so that the claw portions 14 cause the fork insertion holes 29 on the side surface of the pallet 2 to move.
Alternatively, it is configured to be inserted into the gap 15 of the movable shelves 12 which are stacked and stored.

Next, the operation of the embodiment will be described.

When loading / unloading the luggage 3 into / from the rack 6, as shown in FIG. 11, first, the luggage 3 is loaded on the pallet 2 and moved by a forklift to the transshipment shelf 17 described in the conventional rack type warehouse system. To do. Here, since the fork of the forklift and the movable fork 26 of the stacker crane 18 are deviated by 90 ° from the arrangement structure of the stacker crane 18, as shown in FIG.
A four-way pallet 2a is used.

The transshipment shelves may be configured to be rotatable by 90 ° by using a two-way pallet. It is also possible to arrange the rack 6 and the stacker crane 18 so that the fork of the forklift and the movable fork 26 of the stacker crane 18 are on the same line.

Next, the stacker crane 18 is moved to the position of the transshipment shelf 17, the height of the cage frame 22 is adjusted, the rail 27 is directed toward the transshipment shelf 17, and the movable fork 26 is directed toward the claw. The pallet 2 is moved in the same direction, that is, in the pallet 2 direction (see FIG. 3). Then, the claw portion 14 of the movable fork 26 is inserted into the fork insertion port 29 of the pallet 2.

Then, the drive unit 24 winds the wire 25 to raise the cage frame 22. Next, the movable fork 26 is pulled into the cage frame 22, and the rail 27 is rotated by 90 ° to be parallel to the traveling direction of the stacker crane 18. As a result, the movable fork 26
Since the center of gravity of the luggage 3 and the moving axis of the stacker crane 18 coincide with each other, traveling can be performed in a stable state.

Then, as shown in FIG. 4, the stacker crane 18 is stopped at the desired rack 6 position, and the height is adjusted by the cage frame 22. Next, move the rail 27 90 °
It is rotated so that the movable fork 26 faces the rack 6. Move the movable fork 26 to the pallet 2 and the luggage 3.
At the same time, the rack 6 is sent to the fixed shelf 11 or the movable shelf 12 (see FIG. 5). At this time, it is assumed that the bottom of the pallet 2 is slightly above the upper surface of the shelf 11 (12).

Then, the cage frame 22 is lowered so that the pallet 2 is completely placed on the shelf 11 (12), and the claw portion 14 of the movable fork 26 is separated from the upper surface of the fork insertion port 29 of the pallet 2. . Then, the movable fork 26 is pulled into the cage frame 22, and the claw portion 14 is pulled out from the fork insertion port 29 (see FIG. 6). At this point, the luggage 3 is completely stored on the shelf 11 (12). In addition, if the two movable forks 26 are operated separately to convey the two loads 3 at the same time and unload them on different racks 6, the stacker crane 18
Can be stored in desired racks 6 with minimum movement.

When carrying out the luggage 3, the above operations are carried out in the reverse order to move the luggage 3 from the storage section 5 to the transshipment shelf 17.

Further, since the shelves 11 and 12 are formed to have a wide width, one storage portion 5 can store three pieces of luggage 3,
More luggage 3 than the conventional technology can be stored with respect to the number of pillars 1.

When the movable shelf 12 is moved, first, the cage frame 22 is moved to the position of the movable shelf 12 to be moved. Therefore, the two movable forks 26 provided on the cage frame 22 are simultaneously moved toward the movable shelf 12 (see FIG. 7). At this time, the claw portion 14 of the movable fork 26
Position the cage frame 22 at a slightly lower position so that the cage frame 22 is extended to the lower side of the movable shelf 12. Then, by raising the cage frame 22, the movable shelf 12 is disengaged from the shelf fixing member 13.

Then, the movable shelf 12 is attached to the cage frame 22.
Pull it in (see Figure 8). Next, stacker crane 1
8 is moved to the place where the movable shelf 12 is installed (see FIG. 9). The cage frame 22 is located at a slightly higher position so that the movable shelf 12 can be delivered onto the shelf fixing member 13. Then, the movable fork 26 is moved to move the movable shelf 1.
2 is sent out onto the shelf fixing member 13, and the cage frame 2
2 is lowered, and the movable shelf 12 is moved by its own weight.
The convex portion (not shown) of the above and the concave portion (not shown) of the shelf fixing member 13 are fitted together.

Further, the cage frame 22 is lowered to remove the claw portion 14 of the movable fork 26 from the movable shelf 12, and the movable fork 26 is drawn into the cage frame 22 (see FIG. 1).
0). By the above operation, the movable shelves 12 can be easily moved. Further, since the two movable forks 26 are provided and both ends of the movable shelf 12 can be supported, the movable shelf 12 can be moved in a stable state.

In this way, when the movable shelf 12 is removed, the vertical opening of the rack 6 is widened and the tall luggage 3 can be stored. Therefore, it is possible to flexibly deal with the change of the packing style. At this time, no modification is necessary.

Although the movable fork 26 is lifted and lowered by moving the cage frame 22 in the above embodiment, the movable fork 26 itself may be provided with a lifting function to lift and lower the pawl portion 14. . Also, shelves 11,
I tried to put three luggage 3 on 12, but shelves 11, 12
It is also possible to change the size of and load more luggage 3. Further, although the fixed shelves 11 and the movable shelves 12 are provided alternately, it is conceivable to increase the ratio of the movable shelves 12 in order to enhance the ability to respond to changes in the packing style.

[0039]

In summary, according to the present invention, by moving the movable shelf with the movable fork of the stacker crane,
Even if the packaging changes, the excellent effect of being able to change the rack opening in a short time easily and without cost is exerted.

[Brief description of drawings]

FIG. 1 is a front view of a rack showing an embodiment of a rack-type warehouse system to which the present invention is applied.

FIG. 2 is a perspective view of a stacker crane showing an embodiment of a rack-type warehouse system to which the present invention is applied.

FIG. 3 is a perspective view showing directions of a pallet and a fork.

FIG. 4 is a perspective view showing a first step of moving a load.

FIG. 5 is a perspective view showing a second step of moving the luggage.

FIG. 6 is a perspective view showing a third step of moving the luggage.

FIG. 7 is a perspective view showing a first step of moving a movable shelf.

FIG. 8 is a perspective view showing a second step of moving the movable shelves.

FIG. 9 is a perspective view showing a third step of moving the movable shelf.

FIG. 10 is a perspective view showing a fourth step of moving the movable shelves.

FIG. 11 is a perspective view showing a conventional rack-type warehouse system.

FIG. 12A is a sectional view of an essential part of the rack, and FIG. 12B is a plan view of the essential part.

[Explanation of symbols]

 3 Luggage 5 Storage section 6 Rack 11 Fixed shelf 12 Movable shelf 18 Stacker crane 26 Movable fork

Claims (3)

[Claims] 1. A plurality of fixed shelves provided in a luggage storage unit, and a movable shelf detachably attached to the storage unit,
A rack type characterized by including a stacker crane that moves along the above-mentioned storage unit to transfer the luggage to these fixed shelves or movable shelves, and a movable fork provided on the stacker crane and holding the luggage or the movable shelves. Warehouse system. 2. The rack-type warehouse system according to claim 1, wherein the movable fork is provided so as to be movable and rotatable from the stacker crane side to the storage section side. 3. The rack-type warehouse system according to claim 1, wherein the movable shelves are arranged alternately with the fixed shelves.