JPH02132004A - Use of three-dimensionally shelved warehouse - Google Patents

Abstract

PURPOSE:To reduce the size of the pillars of a warehouse by detecting whether the sum of the weight of the cargo already accepted and that of the cargo to be newly accepted is less than the allowable load to the pillar which supports the cargo or not and allocating a shelf for the cargo only when the sum is less than the allowable load. CONSTITUTION:W1 to W6 show the allowable load to each pillar 1. The span between shelves 1 and 1 neighboring with each other is set at the unit length corresponding to the unit weight of a cargo 10. Before the cargo 10 is brought into the warehouse, both the location of the shelf to be allocated for this cargo and a total load imposed upon the pillar 1 are figured out, based on both actual length of the cargo 10 and a unit weight of the cargo 10. In this case, both actual length and unit weight of the cargo 10 are detected in advance. Then, according to the predetermined procedure, a vacant shelf, which is suitable in length in accepting the cargo 10 and whose allowable load is not less than the sum of the weight of the cargo already accepted and that of the cargo 10 to be newly accepted, is searched for. If found satisfactory, the shelf is allocated for this cargo. With this constitution, the size of the pillar can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to control for storing cargo in a multi-story warehouse, and particularly relates to control for storing long objects.

[Conventional technology]

The multi-level warehouse is equipped with a stub crane for transporting cargo,
It consists of a large number of three-dimensional shelves installed along the travel path of the Stapka crane and a control device that determines the storage shelves. The three-dimensional shelf is made up of pillars erected along the running path with multi-tiered tray seats.

The second type of multi-level warehouse is one that stores long items such as pipes. When storing long objects, a plurality of shelves are used as a set of shelves depending on the strength of the long objects.

In this case, the length of the long object varies, and its diameter,
f per unit length (length between a set of supports) depending on wall thickness
There are also fi eagle plants.

Such multi-level warehouses are shown in, for example, Japanese Patent Publication No. 16883/1983 and Japanese Patent Publication No. 46366/1983.
, [Problems to be solved by the invention] As mentioned above, there are various combinations of length of long objects and loading and unloading per unit length, but conventional three-dimensional shelves are designed as follows. . It is unknown which length of f[Ik long fabrics will be stored, and it is desirable to store them so that empty shelves do not occur, so all long fabrics with the maximum in per unit length The strength of the pillars that make up the shelves is designed assuming that they will be stored on the shelves. That is, the strength of the pillars forming the shelves is designed under the M& condition of a heavy load. For this reason, the pillars were large and expensive, and the thickness of the partition bay was also large.

The purpose of the present invention is to enable the pillar to be made smaller.

[Means for solving H problem]

The above purpose is to determine whether the phase of the load acting on the column due to the already stored load and the load acting on the column due to the newly stored load is within the allowable load of the column. This can be achieved by determining the shelf that should be stored when the load is below the allowable load.

[For production]

The presence or absence of grapes and the load for each column are maintained and stored on a computer every time the warehouse is stocked or unloaded, and are constantly managed.When stocking, this data is used to determine the location of empty shelves and the amount of load to be stocked. Shelves can be determined more quickly. Since the load on the column is controlled below the design load (allowable load M), the column can be made smaller by making the design load smaller than before.

〔Example〕

Hereinafter, one embodiment of the present invention will be described with reference to Figures 1 to 3.

In FIGS. 1 and 2, pillars 1 are erected at predetermined intervals along the travel path of a Stapka crane (not shown). A cross arm 2 is installed horizontally on this pillar 1, and constitutes a shelf for storing cargo. 3 is a support, and 4 is a horizontal connection member. The strength of column 1 is not designed to be as large as in the past.

The spaces between each pillar are called "rows" and are counted from left to right. Horses in column 1 are counted from left to right. The space between the top and bottom of the armrests 2 and 2 is called ``attack J'' and is counted from the bottom to the top.The space consisting of rows and steps is called a shelf. ]The length between O and I1 is 100 units.
The unit length is jt (weight Jt per unit length).

Now, when we are trying to store a certain load (a long object such as a pipe) 10, based on the length of the load, the unit weight of the load, and the position of the shelf El and the column L, as shown in Figure 3. The total load is calculated and the load 10 is stored in an empty shelf. It is assumed that the length and unit weight k of the load 10 are calculated as fiff.

In the younger brother figure 3, when a warehousing command is given, the leftmost pillar!
From (column A I) to the right and from the bottom shelf upwards! 1! Execute the flowchart in Figure 3. The location of empty shelves, the load W of each column 1, etc. are memorized.

It is determined whether or not there is an empty shelf at the leftmost column 1 and at the bottom (Step 81).

If this pillar (leftmost pillar, pillar & l) is an empty shelf, this pillar (
(hereinafter referred to as the reference column) as the first standard, determine whether there is an empty shelf with a length of load 10 to the right to be stored (step 83).
.

If empty shelves of the required size are connected, the amount of cargo to be stored is
Find the load W of each column 1 that will become a shelf.

The load W is determined by adding the load due to the fI amount of the load 10 to be stored to the load due to the stored load 10. If the load W of each column is less than the allowable value, this shelf is determined as the shelf to be stored (step 85.87).

If there is no empty shelf in step 81, the reference column is shifted one position to the right. Then, confirm that the pillar house is not the largest (the rightmost pillar), go back to step 811, and check in the same way as above. If the reference column is the leftmost column, the reference column is made the leftmost column and the shelf level is raised by one level. Then, the process returns to step S1. However, if the shelf level is higher than the top level, it is determined that storage is not possible (steps Sll, SI).
3,815,817,819).

In step S3, if there is no empty shelf of the required length, the process also moves to step 811.

If the load W exceeds the allowable load in step S5, the process can also proceed to step S11. However, in this case,
Even if there is an empty shelf, it cannot be stored on the shelf to the left of the column that exceeds the allowable load, so the following is done.

That is, among the columns whose allowable load exceeds , the column to the right of the rightmost column is set as the reference column (step S21). Below, Steve al.
l, 81, 83, 85, 87, 811, 81 3, 81
5, 81 7 to step 823, 825, 827, 8
29,831,833,835,837.

Once in stock, the presence or absence of cargo and the load for each column are updated by computer. The same thing happens when the item is shipped.

Note that the above applies even if the grapes are not long and the length of one load is the same as one shelf.

〔Effect of the invention〕

According to the present invention, it is possible to select appropriate column members without being greatly affected by load factors, and it is possible to construct a multi-level warehouse with an eave sill, a low cost, and a small size.

[Brief explanation of drawings]

Younger brother 1 is a front view of a three-dimensional storage room according to an embodiment of the present invention, younger brother 2
The drawing is a side view of Fig. 1, and the younger Fig. 3 is a flowchart of an embodiment of the present invention. 1... Pillar, 2... Arm, 3...
・Support, IO...Cargo Agent Patent Attorney Masaru Ogawa Male Illusion/----Ikkyo 2 ------U de゜゛ Tree AZ Diagram

Claims (1)

[Claims] 1. Determine whether the sum of the load acting on the column due to the already stored load and the load acting on the column due to the newly stored load is the allowable load of the column, and check if the sum is less than the allowable load. 1. A method for operating a multi-dimensional warehouse, characterized by determining which shelves should be stored when the situation arises.