JPH0986611A - Trouble predicting device in automatic warehouse - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a trouble without stopping warehouse entering/leaving work in an automatic warehouse. SOLUTION: In an automatic warehouse in which a workpiece W is automatically entered/left from a housing 4 by a stucker crane 6, a entering/leaving time from receiving of entering/leaving instruction to entering/leaving completion is compared with a preset reference time and when exceeding of the entering/ leaving time over the reference time is detected, the existence of causes leading to the extension of belts 16 and 21 in a driving part or a bearing trouble is recognized and an alarm is issued while the operation in the warehouse is continued.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a failure prediction device for an automatic warehouse, and more particularly to a device for predicting occurrence of a failure of mechanical parts or electric parts constituting the automatic warehouse during a loading / unloading operation.

[0002]

2. Description of the Related Art Conventionally, for example, JP-A-2-27070.
As disclosed in Japanese Patent Publication No. 4), the work is arranged between the pre-process and the post-process of the production line, the work produced in the pre-process is temporarily carried in and held, and the work is carried out in response to the request of the post-process. There are known automatic warehouses. In this type of warehouse, in addition to a plurality of shelves for accommodating each work, a work transfer machine (generally called a stacker crane) for accommodating and unloading the work is provided for each shelf. . As a general structure of this work carrier, a traveling carriage that can move in a horizontal direction with respect to each shelf, a pole arranged on the traveling carriage and extending in the vertical direction, and a vertical movement along the pole. And a lifter equipped with a fork to perform. That is, the traveling carriage is connected to a driving source for traveling (for example, a motor) by a belt or the like, and can travel in the horizontal direction when the driving source is driven. Further, the lifter is mounted on the traveling carriage. It is connected to a drive source for raising and lowering by a chain or the like, and can be raised and lowered as the drive source is driven.

[0003]

As described above, since the automatic warehouse is provided with the driving parts and the sliding parts such as the bearings provided in the driving parts at a plurality of places, a failure may occur even at one of these places. If it occurs, it will not be possible to perform a smooth loading / unloading operation.

Further, when such a failure occurs, it takes a long time to perform repair work such as replacement of parts, and during that time, the work cannot be put in and out, so that the whole production line is stopped. become.

For this reason, in the prior art, it is possible to prevent failures by regularly inspecting each drive part and the like, and replacing parts that are deteriorated or worn before they occur. It was done.

However, in this case, in order to surely prevent the occurrence of a failure, it is necessary to frequently inspect, and the automatic warehouse must be stopped during this inspection, resulting in a decrease in production efficiency. Will end up.

The present invention has been made in view of this point, and can be realized without stopping the loading / unloading operation of an automatic warehouse.
The purpose is to prevent the occurrence of failures.

[0008]

In order to achieve the above object, the present invention takes advantage of the fact that the time required for loading and unloading becomes long when a factor causing a failure occurs in the driving part of the warehouse. The failure is predicted by always detecting it.

Specifically, as shown in FIG. 1, the invention according to claim 1 is installed between a pre-process and a post-process on an article conveying line, and includes a plurality of storage parts 7, 7 ,. Storage 7,
.. is provided for loading and unloading the article W to and from the storage section 7, and the article W is supplied from the previous step and is temporarily stored in the storage section 7 by the article transfer means 6. The failure prediction device for predicting the failure of the automatic warehouse 1 is targeted for the automatic warehouse 1 in which the article W required by the process is taken out from the storage section 7 by the article transfer means 6 and is put out.
Then, a command means 36 for issuing a command signal to the article transfer means 6 to enter or leave the article, and the article transfer means 6
Receiving / completion detecting means 37 for detecting the completion of warehousing or warehousing by means of the output signals of the command means 36 and the warehousing / completion completion detecting means 37. A time measuring means 38 for measuring the time of entering and leaving until the time when the detecting means 37 detects that the entering or exiting is completed, and an output signal of the time measuring means 38, and the above-mentioned entering and leaving time and a preset reference. A structure provided with a comparison means 39 for comparing the entry / exit time and a failure prediction means 40 for receiving the output of the comparison means 39 and predicting the occurrence of a failure when the entry / exit time exceeds the reference entry / exit time. I am trying. With this configuration, the comparison means 39 compares the entry / exit time required for entry and exit with the reference entry / exit time, and when the entry / exit time exceeds the reference entry / exit time, the failure prediction means 40 predicts the occurrence of a failure. . Therefore, it is possible to prevent a failure from occurring without stopping the loading / unloading operation of the warehouse, and the frequent regular inspection as in the past is not necessary.

According to a second aspect of the present invention, in the failure prediction device for an automatic warehouse according to the first claim, a display panel 41 for displaying entry / exit information is provided, and when the failure prediction means 40 predicts a failure occurrence, The display panel 41 is provided with display means 42 for displaying an alarm. With this configuration, it is possible for the operator to surely recognize that a failure may occur.

According to a third aspect of the present invention, in the failure prediction device for an automatic warehouse according to the first claim, a display panel 41 for displaying loading / unloading information is provided, and when the failure prediction means 40 predicts a failure occurrence, The display means 42 for displaying the necessary inspection items of the failure occurrence factor portion on the display panel 41 is provided. With this configuration, the operator can easily recognize the inspection location,
It is possible to reduce unnecessary inspection work and shorten the work time.

According to a fourth aspect of the present invention, in the failure prediction device for an automatic warehouse according to the first claim, a display panel 41 is provided for displaying entry / exit information, and when the failure prediction means 40 predicts a failure occurrence. The display panel 41 is provided with a display means 42 for displaying the entry / exit time measured by the time measurement means 38. With this configuration, the time required for loading and unloading can be recognized, and failure prediction management can be easily performed.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 2 schematically shows a work transfer line (for example, an automobile assembly line) as an article transfer line according to this embodiment. As shown in FIG. 2, the present work transfer line includes a pre-process (not shown) (for example, a mission unit assembling process) and a three-dimensional warehouse 1 for temporarily storing the work W as an article manufactured in the pre-process. And a delivery side conveyor 3 provided between the three-dimensional warehouse 1 and a post process (not shown) (for example, a vehicle body assembly line). The workpieces W, W, ... Injected into the three-dimensional warehouse 1 are sequentially transported, and in the three-dimensional warehouse 1, the transported workpieces W, W ,. Has become. Then, of the plurality of works W, W, ... Stored in this warehouse 1, the work W required by the post-process is unloaded from the warehouse 1 to the exit side conveyor 3 and conveyed to the post-process by this second conveyor 2. Has been
A predetermined assembling operation is performed in the subsequent process. Further, the warehousing side conveyor 2 is composed of a main conveyor 2a connected to the previous process and a sub-conveyor 2b connecting the main conveyor 2a and the warehousing entrance 1a of the warehouse 1, while the warehousing side conveyor 3 is The main conveyor 3a is connected to the subsequent process, and the sub-conveyor 3b is connected to the main conveyor 3a and the delivery port 1b of the warehouse 1.

Next, the structure of the warehouse 1 will be described. As shown in FIG. 2 and FIG. 3, the main warehouse 1 includes a first storage case 4 and a second storage case 5 that face each other at a predetermined interval.
In addition to the above, the first storage 4 and the second storage 5 are provided.
And a stacker crane 6 as an article transfer means for loading and unloading the works W to and from each of the storage boxes 4 and 5. Hereinafter, each member will be described.

First, the storage boxes 4 and 5 will be described.
The storage boxes 4 and 5 have substantially the same structure. Here, the first storage box 4 shown in FIG. 3 will be described. In this storage case 4, a base portion 4a is fixed to a floor surface F in the room, and a plurality of columns 4b, 4b, ... Standing on the base portion 4a and a plurality of columns 4b, 4b ,. Shelf member 4
, c, 4c, ... The space surrounded by the members 4b and 4c is the work storage section 7, 7,
It is formed as ... Specifically, in the storage case 4, as shown in FIG. 4, the columns 4b, 4b, ... Have a predetermined interval in the depth direction of the storage case 4 (the vertical direction on the paper surface of FIG. 3, the left-right direction of FIG. 4). 10 pairs (20 in total) are arranged at equal intervals in the horizontal direction (the left-right direction in FIG. 3, the vertical direction on the paper surface in FIG. 4), and the shelves 4c, 4c ,.
Are arranged at equal intervals in the vertical direction, and each of them is combined. In addition, corresponding to the portion shown by the phantom line in FIG.
Entry slot 1a and delivery side conveyor 3 for loading
The above-mentioned delivery ports 1b for carrying out the work W are formed respectively, and the work storage portion 7 is not formed in this portion.

The work storage section 7 will be described. As shown in FIGS. 4 and 5, the shelf members 4c are arranged on both sides of the work storage section 7, and the central portion of the work storage section 7 is described. Is open downwards. Then, in the housed state of the work W, both sides of the pallet P are placed on the shelf members 4c, 4c while the work W is placed on the pallet P. still,
4 shows a state in which the work W is conveyed between the storage boxes 4 and 5 together with the pallet P, and FIG.
The states slightly lifted from c and 4c are shown. Further, as shown in FIG. 3, an upper guide rail 27 extending along the extension direction of the storage boxes 4 and 5 is arranged at an intermediate position between the upper ends of the storage boxes 4 and 5.

Next, the stacker crane 6 for loading and unloading the works W into and from the above-mentioned storage boxes 4 and 5 will be described. As shown in FIGS. 3 and 6, the stacker crane 6 is provided with a traveling platform 10, a pole 11, a lifter 12, a work holding portion 13 and the like. Hereinafter, each part of the stacker crane 6 will be described. On the floor surface F between the first storage 4 and the second storage 5, each storage 4,
A lower guide rail 15 extending along the extension direction of 5 is laid, and the traveling platform 10 is guided by the lower guide rail 15 and is located between the first storage 4 and the second storage 5. The position can be moved horizontally (Fig. 3
Arrow)). More specifically, as shown in FIG. 6, the lower guide rail 15 includes a rail main body 15a having a rectangular cross section and a plate-shaped guide plate 15b fixed to the upper surface of the rail main body 15a. Is set to be slightly larger than the width of the rail body 15a. Then, the traveling platform 10 is rotatable on both sides in the longitudinal direction thereof about a spindle extending horizontally in a direction orthogonal to the extension direction of the guide rail 15 and contacts the upper surface of the guide plate 15b. Done first
Rollers 10a, 10a are provided. Further, below the first roller 10a in the traveling table 10, the rail main body 1 is rotatable about a support shaft extending in the vertical direction.
A plurality of second rollers 10b, 1 abutted on both side surfaces of 5a
0b is provided. Further, the traveling base 10 has a third roller which is rotatable about a support shaft extending parallel to the support shaft of the first roller 10a and which abuts the lower surface of the guide plate 15b below the first roller 10a. 1
0c and 10c are provided. Each such roller 1
Depending on the arrangement state of 0a, 10b, 10c, the first roller 1
0a and the third roller 10c
b is held in the vertical direction, and the rail main body 15a is held by the pair of left and right second rollers 10b, 10b (in the width direction of the stacker crane 6).
When the vehicle travels along the guide rail 15, the vehicle travels stably while preventing rattling in the vertical direction and the horizontal direction with respect to the guide rail 15.

Further, belt connecting brackets 10d, 10d extending in the horizontal direction are provided at both ends of the traveling table 10 in the longitudinal direction.
Is attached to each of the belt connecting brackets 10
Both ends of one first belt 16 are connected to d and 10d, respectively. As shown in FIG. 3, a part of the first belt 16 is the rail body 1 of the guide rail 15.
It passes through the inside of 5a, extends along the extension direction of the guide rail 15, and is stretched over pulleys 17, 17 arranged at both ends of the guide rail 15. The drive shaft of the first motor 18 installed on the floor F is linked to the rotary shaft of one of the pair of pulleys 17, 17 (the one on the right side in FIG. 3) by a chain or a V belt 18a. ing. Therefore, when the first motor 18 is driven, the pulley 1
When 7 rotates, the first belt 16 travels with the pulleys 17 and 17 stretched over it, whereby the traveling table 10 is guided by the lower guide rails 15 and the first storage box 4 and the first storage box 4. The intermediate position between the two storage boxes 5 travels along the extension direction of each of the storage boxes 4 and 5, and the first motor 1
It is designed to be stopped at an arbitrary position according to the driving amount of No. 8.

On the other hand, the pole 11 corresponds to the traveling table 10
A pair is erected upright at a position spaced apart by a predetermined distance in the traveling direction of the traveling platform 10, and upper ends thereof are connected to each other by a connecting member 26. Further, guide rollers 26a, 26a rotatable around a vertically extending support shaft are provided at a plurality of positions on the upper surface of the connecting member 26 so that they can roll along the upper guide rail 27. ing. That is, the upper end of the stacker crane 6 is guided by the upper guide rail 27. Further, pulleys 20 and 20 that are rotatable around a horizontally extending support shaft are provided at the upper and lower ends of the poles 11 and 11, respectively. A second belt 21 is stretched around, and the lifter 12 is attached to a part of the second belt 21. Further, a second motor 22 having a drive shaft extending in the horizontal direction is mounted on the traveling table 10, and a pulley 23 is attached to the drive shaft of the second motor 22, so that the traveling is performed. A third belt 24 is stretched between a pulley 20 ′ coaxially arranged with the pulley 20 on the table 10 and the pulley 23.
With such a configuration, when the second motor 22 is driven,
The driving force of the second motor 22 is transmitted to the second belt 21 via the third belt 24 and the pulleys 20 ', 20, and the lifter 13 causes the upper ends of the poles 11, 11 to move as the second belt 21 travels. It can move up and down between the lower part and the lower part, and can be stopped at an arbitrary height position according to the drive amount of the second motor 18. Further, the lifter 12 has rail portions 11a, 1 protruding from the side surfaces of the poles 11, 11.
A pair of guide rollers 12 arranged so as to sandwich 1a
a, 12a, and the guide rollers 12a, 1
The lifting movement of the lifter 12 is guided by the rolling of the rail portion 11a by the rail 2a.

The work holding section 13 will be described below. As shown in FIG.
A guide rail 28 extending in the horizontal direction orthogonal to the extension direction of each of the storage cases 4 and 5, and the guide rail 28.
On the other hand, a fork 29 that is slidably movable in the direction perpendicular to the paper surface of FIG. 6, that is, in the direction toward the storage boxes 4 and 5, is provided. The fork 29 is configured so that the driving force of a third motor 30 arranged on the lower surface of the guide rail 28 is transmitted by a plurality of gears (not shown) and can slide with respect to the guide rail 28. Further, the fork 29 is for mounting the pallet P together with the work W on the upper surface thereof, and a clamp (not shown) for preventing the position shift of the work W in the work holding state is provided on the upper surface. . That is, the work holding unit 13
Means that the fork 29 on which the work W is placed is the third motor 30.
By slidingly moving on the guide rail 28 in accordance with the driving of the work W, the work W can be stored in the facing work storage portion 7 or the work W can be taken out from the work storage portion 7.

As shown in FIG. 3, this three-dimensional warehouse 1 is provided with a controller 35, and the drive signals of the motors 18, 22, 30 are controlled by command signals from the controller 35. Further, the controller 35 is provided with a command means 36 for transmitting a command signal for the stacker crane 6 to enter or exit the stacker crane 6.

Next, the loading / unloading operation of the work W in the three-dimensional warehouse 1 configured as described above will be described with reference to the time chart of FIG. First, the operation of storing the work W will be described. In this warehousing operation, first, at the end of the warehousing operation as the previous stroke, the lifter 12 located opposite to the warehousing opening 1b moves horizontally by the drive of the first motor 18 and returns to the warehousing opening 1a (operation of FIG. 7). A). Then, the third motor 30 drives and the fork 29 moves to the lower side of the pallet P on which the work W at the storage opening 1a is placed (operation B).
After that, the lifter 12 is slightly moved upward by the driving of the second motor 22, whereby the fork 29 scoops the pallet P together with the work W (moves from the virtual line shown in FIG. 5 to the solid line). After that, the fork 29 returns to the original position to move the work W from the storage port 1a to between the storage boxes 4 and 5, and the clamp holds the pallet P (operations D and E). Then, the traveling platform 10 travels with the driving of the first motor 18 and the lifter 12 travels with the driving of the second motor 22.
By the up-and-down movement of the lifter 12, the lifter 12 moves to a position facing a predetermined vacant work storage portion 7 of the storage boxes 4 and 5 (operation F). After this operation, the clamp is released and the fork 29 is moved to the work storage portion 7, and the work W is moved to a predetermined work storage portion 7 (operations G and H). Then, the lifter 12 is slightly lowered to move the pallet P to the shelf member 4
After being placed on the upper surfaces of c and 4c (operation I), the fork 29
Returns to the original position (operation J). This completes the storage operation of the work W.

On the other hand, as the operation of unloading the work W, the lifter 12 is moved to a position facing the work storage portion 7 in which the predetermined work W of the storages 4 and 5 is stored by the traveling of the traveling table 10 ( Action K). Then, the above-mentioned operation B
The same operations L to P as the processes to F are performed, the work W is taken out from the work storage unit 7 together with the pallet P, and the work W is moved to the position facing the delivery port 1b. After that, the clamp is released, the fork 29 extends toward the exit port 1b, and the work W moves into the exit port 1b (operations Q and R). Then, the lifter 12 is slightly lowered to move the pallet P to the exit port 1
After mounting on b (operation S), the fork 29 returns to the original position (operation T). This completes the operation of leaving the work W.

Next, the failure prediction determination operation of the three-dimensional warehouse, which is a feature of this embodiment, will be described with reference to the flowchart of FIG. After the start, first in step ST1, it is determined whether or not a reset button (not shown) that sets the determination operation to the initial state is pressed. If this button is pressed, an alarm and later-described steps are given in step ST2.
Reset the NG flag together. After that, the process proceeds to step ST3, it is detected whether or not the warehousing command signal is transmitted from the command means 36 of the controller 35, and if it is transmitted, the process proceeds to step ST4 to set (raise) the warehousing flag.
At the same time, the storage time measuring timer is activated in step ST5. Thereafter, in step ST6, it is detected whether or not the warehousing operation is completed, and when it is completed, the measured value measured by the warehousing time measuring timer is detected in step ST7. Then, in step ST8, the detected measurement value is compared with a preset reference value to determine whether or not the measurement value is larger than the reference value. YE here
If S is determined, the NG flag is set (raised) in step ST9 because there is a possibility of failure in the multi-storey, and the process proceeds to step ST10, while if NO is set, the NG flag is set. Step 1 without doing
Move to 0. In this step ST10, the register number n of the memory having 10 registers (n = 1 to 10) for storing the measured value is set to 10 and step ST1
In step 1, the measurement value stored in the n-1th register is moved to the nth register. And step ST
In n, it is determined whether n = 2, that is, whether the measured value stored in the 1st register has been moved to the 2nd register, and when it is NO, n is decreased by 1 and then step ST11 is performed. Move. By repeating this operation, the measured values stored in each register are sequentially moved one by one to the side with the larger register number, and the first register is made empty. In this state, step ST12
Is determined to be YES, and the measured value measured in step ST7 is stored in the first register in step ST14. That is, the latest measured value information is always stored in the first register. Then step
In ST15, it is determined whether or not the NG flag is set, and if YES, it is determined that a failure may occur in the warehouse 1 and the operation of the warehouse 1 is continued.
At 16 the operator is alerted by issuing an alarm buzzer or turning on an alarm lamp. If an alarm is issued in this way or if NO is determined in step ST15, the warehousing flag is reset in step ST17, and the process returns to step ST1.

Because of such a failure predicting operation, at step ST6
The time measuring means 38 is constituted by ST7, the comparison 39 is constituted by step ST8, and the failure predicting means 40 is constituted by step ST15.

Further, the reference value to be compared with the measured value of the entering and exiting time is set to the maximum value of the required entering and exiting time. That is, the storage time for the work storage unit 7 located near the storage port 1a and the work storage unit 7 located far from the storage port 1a.
Since it is different from the storage time to the work storage unit, the storage time to the work storage unit 7 at the farthest position from the storage port 1a is set to the above reference value as the maximum required storage time in order to avoid malfunction of failure prediction. To do. In other words, during normal operation with no possibility of failure, the reference value is set so that the warehousing and unloading operations are completed in a time shorter than the maximum value of the required warehousing and unloading time in any warehousing / unloading operation for any of the work storage units 7. ing.

When it is determined that a failure may occur in the warehouse 1, an alarm buzzer is emitted, an alarm lamp is turned on, and a display panel 41 (FIG. 2) provided in the main warehouse 1 is provided. You may make it display an alarm. In addition to an alarm display on the display panel 41, a failure occurrence factor portion (for example, each motor 18, 22, 3
0, belts 16, 21, etc.) allows the operator to easily recognize the inspection location, reduce unnecessary inspection work, and shorten the working time. Furthermore, if the measured values stored in the registers of the memory are displayed on the display panel 41 (the measured values are displayed ten times in the past), it is possible to recognize the transition of the time required for loading and unloading. Failure prediction management can be easily performed. Further, in some cases, the failure occurrence factor can be estimated from the transition of this time. For example, it can be used to judge that the belt is extended when the time is gradually increased, and the bearing is defective when the time is rapidly increased.

As described above, the belts 16 and 21 are extended, the torques of the motors 18, 22 and 30 are reduced, and the rotation driving portions are provided, which are the causes of the failure of the automated warehouse 1. Since damage prediction of bearings is made by using the fact that the time required for loading and unloading is significantly longer than the prescribed reference value, failure prediction judgment is performed. Is unnecessary,
As a result, it is possible to prevent a failure from occurring while avoiding a decrease in production efficiency due to the stop of the automated warehouse due to the periodic inspection.

In the present embodiment, the case where the present invention is applied to the warehouse 1 having the pair of storage boxes 4 and 5 has been described. However, the present invention is not limited to this, and only one storage box is provided. It may be applied to the warehouse.

[0030]

As described above, according to the present invention, the following effects can be obtained. According to the first aspect of the present invention, a comparing means for comparing the entry / exit time with a preset reference entry / exit time, and a failure for predicting a failure occurrence when the entry / exit time exceeds the reference entry / exit time. By utilizing the fact that the time required for loading and unloading will increase if a cause of failure occurs in the drive part of the warehouse
Since the failure is predicted by always detecting this time, it is possible to prevent the occurrence of the failure without stopping the loading and unloading operation of the warehouse. There is nothing to do. For this reason,
It is possible to prevent a failure from occurring while avoiding a decrease in production efficiency due to the stop of the automated warehouse due to the periodic inspection.

According to the second aspect of the invention, since the display panel is provided with the display means for displaying an alarm, it is possible to make the operator surely recognize that there is a possibility of failure, and to predict failure. The reliability of can be improved.

According to the third aspect of the invention, since the display means for displaying the necessary inspection items of the failure occurrence factor portion on the display panel is provided, it is possible to make the operator easily recognize the inspection point, which is wasteful. It is possible to reduce unnecessary inspection work, shorten work time, quickly return the warehouse to operation after work, and improve production efficiency.

According to the invention as set forth in claim 4, since the display means for displaying the entering / exiting time measured by the time measuring means on the display panel is provided, it is possible to recognize the time required for entering / exiting, and the failure occurs. Prediction management can be easily performed.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration of the present invention.

FIG. 2 is a diagram schematically showing a work transfer line according to the embodiment.

FIG. 3 is a diagram showing a three-dimensional warehouse.

FIG. 4 is a diagram showing a work storage state of a warehouse.

FIG. 5 is a diagram showing a work transfer state.

FIG. 6 is a diagram showing a stacker crane.

FIG. 7 is a time chart showing the loading / unloading operation of the warehouse.

FIG. 8 is a flowchart showing a failure prediction operation.

[Explanation of symbols]

 1 Automatic Warehouse 6 Stacker Crane (Transfer Device) 7 Work Storage Unit 36 Command Device 37 Entry / Exit Completion Detection Device 38 Time Measurement Device 39 Comparison Device 40 Failure Prediction Device 41 Display Panel 42 Display Device W Work (Product)

Claims (4)

[Claims] 1. The above-mentioned pre-process, which is installed between a pre-process and a post-process on an article conveying line, and is provided with a plurality of storage sections and article transfer means for loading and unloading articles into and from the storage sections. The goods supplied from the above are stored and temporarily stored in the storage section by the article transfer means, and the articles required by the post-process are taken out from the storage section by the article transfer means to be delivered to the automatic warehouse. A failure prediction device for predicting a failure of an automatic warehouse, which detects commanding means for issuing a command signal for warehousing or unloading to the article transferring means and completion of warehousing or unloading by the article transferring means. From the time when the storage / completion detecting means receives the output signals of the above-mentioned command means and the above-mentioned storage / completion completion detecting means, and when the storage / completion detection means detects that the storage / completion is completed. Total loading and unloading time of A time measuring means for measuring, a comparing means for receiving the output signal of the time measuring means, and comparing the above-mentioned warehousing / leaving time with a preset reference warehousing / leaving time, and receiving / outputting time for receiving the output of the comparing means. A failure prediction device for an automated warehouse, comprising: failure prediction means for predicting occurrence of a failure when the standard entry / exit time is exceeded. 2. A display panel for displaying entry / exit information, and a display means for displaying an alarm on the display panel when the failure prediction means predicts the occurrence of a failure. The failure prediction device in the automated warehouse according to 1. 3. A display panel for displaying entry / exit information, and when the failure prediction means predicts the occurrence of a failure, it has a display means for displaying the necessary inspection items of the failure occurrence factor section on the display panel. The failure prediction device in an automatic warehouse according to claim 1. 4. A display panel for displaying entry / exit information is provided, and when the failure prediction means predicts the occurrence of a failure, the display panel is provided with display means for displaying the entry / exit time measured by the time measuring means. The failure prediction device for an automatic warehouse according to claim 1, wherein: