JPH1087013A - Safety device in high-rised warehouse - Google Patents

Abstract

PROBLEM TO BE SOLVED: To keep the safety of a worker and prevent the generation of a stress to the device, when the worker enters in a high-rised warehouse for the repair or the inspection. SOLUTION: In a high-rised warehouse made by forming a passage between shelf units in which a housing shelf is aligning in a matrix form vertically and laterally, and by forming to deliver and receive articles between an entrance/delivery part and the housing shelf by a conveying unit movable up and down in a stacker device which runs along the above passage, an electric lock 12 is provided to a door for entrance to the passage, and at the same time, when an unlocking instruction to the above electric lock 12 is input during the operation of the stacker device to a delivery/warehousing operation part provided out of the warehouse, the motive power source fed from a power source 30 to the operation controller 16 of the stacker device is cut off by a controller 15 at the operation part after the completion of the operation of the stacker device, and after that, the control is carried out to operate the unlocking of the electric lock 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the structure of a safety device for a three-dimensional warehouse at the time of repair and inspection of a stacker device or the like.

[0002]

2. Description of the Related Art A passage is formed between shelf units in which storage shelves are arranged in a matrix in up, down, left, and right directions. In a three-dimensional warehouse configured to take articles in and out of the storage shelves, as a safety device for ensuring the safety of workers entering the aisle at the time of repair and inspection of a stacker device or the like, JP 64-
In Japanese Patent No. 28101, a switch for switching between an automatic operation mode and a manual operation mode is provided on an operation panel for automatic operation provided outside a three-dimensional warehouse, and a first key for the switching operation can be freely inserted and removed with this switch. An opening / closing door provided on a safety fence for enclosing the entry block into the passage is provided with a key switch having a second key which can be inserted and removed inside the opening / closing door, and this key switch is operated by opening operation of the first key. The power supply is configured so that the opening operation by the second key and the extraction of the second key can be performed, and the lid of the power switch box can be opened and closed by the operator with the extracted second key. The switch box is also proposed to be installed inside the safety fence.

[0003] This safety device requires an operator to operate the stacker device in a manual mode at the time of repair / inspection. The mode was not changed to the mode.

[0004]

However, according to this configuration, the inadvertent erroneous operation on the operation panel unit by a third party is prevented by executing the operation of the two keys at different places. However, there is a problem that the operator performing the repair / inspection is extremely complicated because the operation locations using the two keys are many, such as an operation panel, a key switch, and a power switch box.

Further, if the automatic operation mode is turned off or suddenly switched to the manual operation mode on the operation panel during operation of the stacker device, such as running, the stacker device suddenly stops, and particularly a tall crane such as a stacker crane. If the object stops suddenly, a large stress (negative acceleration) is applied to the component, which is not preferable.

[0006] The present invention is directed to overcoming these problems.

[0007]

In order to achieve the above object, a safety device in a three-dimensional warehouse according to the present invention is characterized in that a passage is formed between shelf units in which storage shelves are arranged vertically and horizontally in a matrix. In a three-dimensional warehouse configured so that articles can be taken in and out of a storage unit and the storage shelf by a vertically movable transfer unit in a stacker device that travels along a path, electricity is supplied to an entrance door for the passage. On the other hand, when a lock command is input to the electric lock during the operation of the stacker device, the entry / exit operation unit arranged outside the three-dimensional warehouse waits for the completion of the operation of the stacker device. It is characterized in that control means for performing control to execute an unlocking operation of the electric lock is provided.

[0008]

Next, an embodiment of the present invention will be described. FIG. 1 is a perspective view of a three-dimensional warehouse 1 for storing a file holder 4 for storing medical records or the like in a hospital or the like, and FIG. 2 is a diagram showing the inside thereof. The three-dimensional warehouse 1 forms a passage between two shelf units 2, 2 in which storage shelves 3 are arranged vertically and horizontally, and travels along a rail 5 arranged along the longitudinal direction of the passage. A stacker device 6 and a loading / unloading unit 7 provided on one side of the shelf unit 2. The stacker device 6 includes a vertically long column 8, along which the transport unit 9 is configured to be vertically movable. The trolley 1 put in the loading / unloading section 7 by the transport unit 9
The file holder 4 in the storage shelf 3 is stored in the storage shelf 3 at a predetermined position.
Is taken out to the carriage 10.

FIG. 3 shows a functional block diagram of the safety device according to the present invention. An entrance door 11 for entering the passage is provided on the front surface of the three-dimensional warehouse 1. The entry / exit operation unit 13 is arranged outside the warehouse 1 (in the embodiment, the outer surface of the three-dimensional warehouse 1). On the other hand, three-dimensional warehouse 1
The host computer 14 installed at an appropriate place outside includes:
A reception terminal (not shown) is connected to the controller 15 of the entry / exit unit operation unit 13, and a specific code of the file holder 3 to be entered / exited from the terminal is input and stored in a data storage device (not shown). When an operation button of a storage command or a storage command is pressed in the storage / outlet operation section 13, the signal is sent to the stacker device 6 via an optical transmission path or a signal line.
Transmitted to the operation controller 16 mounted on the rail 5
, The transport unit 9 is moved up and down, and the file holder 3 is loaded and discharged. Also, reference numeral 30
Denotes a power supply unit, and the controller 1 of the storage / outlet operation unit 13
5 is configured to serve as a control power source and supply motive power to the operation controller 16, the drive motor 17 for the stacker device 6, the drive motor 18 for lifting and the like, and the like.

As shown in FIG. 3, the electric lock 12 is moved in and out by an actuator 20 such as an electromagnetic solenoid.
A bar 22 which is disengaged from an engaging portion 21 at an entrance and exit;
A cylinder lock 23 for actuating the bar 22 by turning a manual key, an unlock detector 24 such as a limit switch for detecting this state when the bar 22 is in the unlock position, and a door 11.
And a door opening / closing detector 25 for detecting a door closed state by contacting the door member 26 when the door is closed with respect to the entrance. When the bar 22 is retracted (in the unlocked state), the rotating piece 27 of the cylinder lock 23 does not contact (engage) with the pin 29 protruding from the side surface thereof, and the bar 22 advances. When the cylinder lock 23 is turned in the unlocking direction (when the lock is in the locked state), the pin 29 is pushed by the turning piece 27,
The bar 22 is retracted and unlocked.

Reference numeral 28 denotes lock detecting means for detecting whether or not the bar 22 has been fitted into the engaging portion 21 at the entrance, and discriminating whether or not the lock has been achieved. A limit switch or the like that is turned on when it comes into contact with the bar 22 that has entered the joint 21 is used. In this way, even if the bar 22 protrudes, the engaging portion 2 on the entrance side
Since the locked state of the door 11 cannot be guaranteed unless it is fitted with the lock 1, the locked state of the door 11 can be reliably ensured in the ON state of the lock detecting means 28. The electric lock 12 is provided on the member 26 side of the entrance and exit, and
May be provided on the door 11 side.

The controller 15 of the loading / unloading section operating section 13
When an unlock command is input to the electric lock 12 while the stacker device 6 is operating, the stacker device 6
The control means controls to execute the unlocking operation of the electric lock 12 after the completion of the operation. Next, FIGS. 4 and 5
The unlocking operation and the locking operation will be described with reference to the flowchart of FIG. FIG. 4 is a subroutine flowchart of an unlocking operation when the door 11 is to be opened during maintenance or inspection.
Following the start, the control power supply to the controller 15 is turned on.
It is determined whether the state is an OFF state (step S1). That is, at the time of a power failure or when the controller 15
When the manual unlocking is executed when the controller is not activated, the control power of the controller 15 is in the OFF state. Therefore, in step S2, the key is manually inserted into the cylinder lock 23, and the key is rotated. 22 is removed from the engaging part 21 on the entrance side. As a result, the contact point of the lock detecting means 28 on the side of the engaging portion 21 is kept OFF, while the contact point of the unlock detector 24 is kept ON (step S).
3). However, since the control power is in the OFF state, the contact state of the lock detecting means 28 and the unlock detector 24 is not determined by the controller 15.

In this way, the manual unlocking operation is performed. When the control power is on in step S2, that is, when the controller 15 is in the activated state,
The three-dimensional warehouse 1 is in an operating state, and the stacker device 6 and the like may be moving. In this state, the controller 15
The user inputs an unlock request for the electric lock 12 of the door 11 (step S4). This unlocking request is executed by reading an ID card by an ID card reading unit (not shown) or by inputting a predetermined password into an input unit of a numeric keypad. Even if the unlock request is made, the operation waits for the operation to be completed while the stacker device 6 is operating, for example, while traveling (step S5). For example, a predetermined storage shelf 3
When the stacker device 6 is traveling toward
The process waits until the operation of storing the file holder 4 in the predetermined storage shelf 3 is completed.

When the operation of the stacker device 6 is completed at step S5 (yes at step S5), a predetermined signal is output to the actuator 20 to retreat the bar 22 from the engaging portion 21 to unlock (step S5). S6). When the unlocking is completed, the contact of the lock detecting means 28 is kept in the OFF state, while the contact of the unlock detector 24 is kept in the ON state (step S7). Next, when the worker opens the door 11 (step S8, yes), the door open / close detector 25 is turned off.
In this state, the power supply from the power supply unit 30 to the stacker device 6 is cut off (step S9). The power-off of the power supply in step S9 may be executed before step S6 or concurrently with the unlocking operation of the electric lock in step S6.

FIG. 5 shows a subroutine flow chart showing the operation of closing the door 11 after the maintenance / inspection work is completed. When the control power is supplied to the controller 15, the start and then the door open / close detector 25 Door 1
1 is determined to be closed (step S10, ye
s) Contrary to the above, the power source is turned on (step S11). Next, it is determined in step S12 whether or not the contact of the lock detecting means 28 is kept OFF and the contact of the unlock detector 24 is kept ON. If yes in step S12, the electric lock 12 is in the unlocked state, and if no, the electric lock 12 is in the locked state. This state of no means that the worker did not use the cylinder lock 23 and did not release the electric lock 12,
This means that the door 11 was not opened.

If the answer is yes in step S12, the controller 15 operates the actuator 20 to perform the home return operation of projecting and locking the bar 22 (step S13). Thereby, the lock detecting means 28
Contact is ON, and the contact of unlock detector 24 is OFF
Held in state. Next, in step S14, the stacker 6 performed an origin return operation (including an operation of returning to the origin position along the rail 5, including an operation of confirming the coordinate origins of the transport unit 9 in the X and Y directions). Thereafter, the file holder 4 is taken into the transport unit 9 from the loading / unloading section 7, and the operation returns to the normal operation of executing the storing operation to the storage shelf 3 or the removal of the file holder 4 from the storage shelf 3 (step). S15).

If the determination in step S12 is "no", that is, if the door 11 is not opened, the home return operation of the electric lock 12 and the home return operation of the stacker device 6 are omitted and the normal operation starts. (Step S15).
In this way, since the use state of the door 11 can be determined after the control power supply is turned on, the normal operation can be promptly started by omitting the origin return operation of the two.

As described above, even if there is a command to open the door 11 to the aisle for repair and inspection of the three-dimensional warehouse, while the stacker device 6 is operating, the door remains open until the operation is completed and stopped. Since the electric lock 12 for opening the lock 11 is not unlocked, it is possible to prevent accidents such as contact with the moving stacker device when the worker opens the door and enters the passage, and at the same time, as in the related art. When the door 11 is opened, a situation in which the power supply is shut off and the stacker device 6 is suddenly stopped, thereby causing stress, can be eliminated.

Further, when the control power supply is turned on again to the controller 15, the electric lock 1
Since the unlocked or locked state of No. 2 and the opened or closed state of the door 11 can be confirmed, the operator also has the effect of performing cumbersome work such as double key operation as in the related art.

[0020]

As described above, the present invention relates to a stacker device which forms a passage between shelf units in which storage shelves are arranged vertically and horizontally and in a matrix and travels along the passage. In a three-dimensional warehouse configured so that articles can be taken in and out between a loading / unloading part and the storage shelf with a vertically movable transport unit, an electric lock is provided at an entrance door for the passage, and the outside of the three-dimensional warehouse When the unlocking command to the electric lock is input during the operation of the stacker device, the unlocking operation of the electric lock is executed after the completion of the operation of the stacker device. Control means for controlling the
Even if there is a command to open the door for repair of the three-dimensional warehouse, while the stacker device is operating, the electric lock for opening the door will not be unlocked until the operation is completed and stopped. Therefore, when a worker opens the door and enters the passage, accidents such as contact with the moving stacker device can be prevented, and at the same time, opening the door shuts off the power supply and the stacker device suddenly It is possible to eliminate a situation in which a stress is generated by stopping.

[Brief description of the drawings]

FIG. 1 is a partially broken perspective view of a three-dimensional warehouse.

FIG. 2 is a sectional view taken along line II-II of FIG.

FIG. 3 is a functional block diagram of a control unit.

FIG. 4 is a subroutine flowchart of an unlocking operation.

FIG. 5 is a subroutine flowchart of a locking operation.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Three-dimensional warehouse 2 Shelf unit 3 Storage shelf part 6 Stacker device 9 Transport unit 11 Door 12 Electric lock 13 Entry and exit part operation part 15 Controller 16 Operation controller 20 Actuator 22 Bar rod 23 Cylinder lock 24 Unlock detector 25 Door open / close detector 28 Lock detection means 30 Power supply unit

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Shinichi Murakoshi 1-4-1-12 Imafukuhigashi, Joto-ku, Osaka Inside Ito-Kikulebio Co., Ltd.

Claims (1)

[Claims] 1. A transport unit that forms a passage between shelf units in which storage shelves are arranged vertically and horizontally in a matrix and that can move up and down in a stacker device that runs along the passage. In a three-dimensional warehouse configured to take articles in and out of the storage shelves, an electric lock is provided on an entrance door to the passage, and the stacking / unloading operation unit disposed outside the three-dimensional warehouse includes the stacker device. When an unlock command is input to the electric lock during the operation of (i), control means is provided for controlling to execute the unlocking operation of the electric lock after completion of the operation of the stacker device. Safety equipment in a three-dimensional warehouse.