JPH09315517A - Automated warehouse - Google Patents

Abstract

PROBLEM TO BE SOLVED: To quickly and normally continue manual picking work after an operator opens a door and enters a safety fence and to secure safety when the other operator erroneously opens the door and enters the safety fence during the manual picking work. SOLUTION: In an automated warehouse 1, when an external key switch 37 is switched to the picking position by a first key and an internal key switch 38 is switched to the unit position by a second key, a power source of a stopped taking in/out device is not shut off even if an operator tends to enter a safety fence 6 and opens a door 33 and a limit switch 34 detects release of the door 33. If the other operator erroneously opens the door 33 when both the external key switch 37 and the internal key switch 38 are switched to the picking position, the limit switch 34 detects release of the door 33, shuts off the power source and emergency-stops the taking in/off device 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic warehouse in which a loading / unloading device can be operated to automatically pick up a load, and an operator can also pick up the load manually by getting in the cab.

[0002]

2. Description of the Related Art Conventionally, as an automatic warehouse, for example, Japanese Patent Laid-Open No.
There is one disclosed in Japanese Patent Publication No. 4-28101. That is, when the worker opens the door and enters the inside of the safety fence, by switching the first key inserted into the automatic operation panel provided outside the safety fence from the automatic side to the stop side,
Stop the access device. Then, by pulling out the first key from the automatic operation panel and inserting it into the first cylinder of the key switch to perform the opening operation, the second key becomes operable, and the second cylinder is opened via the second key. Operate it, retract the main lock rod and turn off one limit switch.

After removing the second key from the second cylinder, the auxiliary lock rod is retracted via the lever to turn off the other limit switch. When both limit switches are turned off in this way, the power to the warehouse device is cut off, and the worker can open the door and enter the inside of the safety fence.

When the operator operates the loading / unloading device manually by operating the manual operation panel provided in the loading / unloading device inside the safety fence, the operator opens the lid of the switch box with the second key and turns on the switch. Power on the warehouse equipment. This allows the manual operation panel to be operated to manually operate the loading / unloading device.

[0005]

However, in the above-mentioned conventional type, when the worker opens the door and enters the inside of the safety fence, the power of the warehouse device is shut off, and the manual operation panel is operated thereafter. In order to manually operate the loading / unloading device, it is necessary to switch on the switch box and power on the warehouse device, which is troublesome.

Further, while an operator turns on the switch of the switch box to turn on the power to the warehouse apparatus and then operates the manual operation panel to manually operate the loading / unloading apparatus, another operator mistakenly opens the door. If you open the door and come inside the safety fence,
It was dangerous.

Therefore, the invention according to claim 1 of the present invention is intended to continue the manual picking work quickly and normally after the operator opens the door and enters the inside of the safety fence. The invention according to item 2 ensures the safety in the case where another worker accidentally opens the door and enters the inside of the safety fence while the worker is manually picking inside the safety fence. It is intended for.

[0008]

In order to achieve the above-mentioned object, the invention according to claim 1 of the present invention comprises a shelf,
A loading and unloading device that travels along a certain route to load and unload loads into and from the shelves, a safety fence that prevents people from entering the certain route, and the loading and unloading device that can be operated outside the safety fence. The above-mentioned loading / unloading device is provided with a ground-side control means, and the above-mentioned loading / unloading device is provided with an elevating / lowering body, a driver's cab provided on the lifting / lowering body and in which an operator can get in, and the loading / unloading device is operated in the operator's cab An automatic warehouse having possible operator's cab side control means, wherein the safety fence is provided with a door whose opening / closing detection means detects opening / closing, and an outside key switch is provided outside the safety fence and inside. An internal key switch is provided in the first key, which enables operation of the ground-side control means and the external key switch, and the removal / insertion device is stopped by being removed from the ground-side control means. And a second key operable to operate the driver's cab side control means and an internal key switch, and the external key switch can be switched between a manual picking mode position and an automatic driving mode position by the first key. The internal key switch can be switched between the manual picking mode position and the automatic operation mode position by the second key, and the internal key switch is switched by the second key to the automatic operation mode position by the first key. When the external key switch is switched to the manual picking mode position by the above, when the opening / closing detecting means detects the opening of the door, the power supply to the stopped loading / unloading device is not shut off. is there.

According to this, in the case of automatic picking work, the first key is inserted into the ground side control means to bring it into an operating state. As a result, based on the instruction from the ground-side control means, the loading / unloading device travels along a fixed path and the elevating body moves up and down, so that the load is automatically taken out from the intended storage section of the shelf. At this time, the external key switch is switched to the automatic operation mode position, and the internal key switch is switched to the automatic operation mode position with the second key inserted.

When an operator gets in the operator's cab and manually picks a required number of loads from a large number of loads stored in a storage container or placed on a pallet, first, on the ground side. After the first key is removed from the control means and the loading / unloading device is stopped, the first key is inserted into the external key switch to switch to the manual picking mode position.

Then, the door is opened to enter the safety fence. At this time, the open / close detection means detects the opening of the door, but the internal key switch is switched to the automatic operation mode position with the second key inserted, and the external key switch is switched to the manual picking mode position. Since the switching is performed, the power supply of the stopped loading / unloading device is not shut off, and the subsequent manual picking work can be quickly and normally continued.

Then, the door is closed, the second key is switched from the automatic operation mode position of the internal key switch to the manual picking mode position, and the second key is removed from the internal key switch. Next, the operator gets into the driver's cab with the second key, inserts the second key into the driver's cab-side control means, and puts it in an operating state. As the vehicle travels, the elevating body ascends and descends and moves to the front of the intended storage section on the shelf. Then, after taking out the storage container, the pallet, or the like from the intended storage unit onto the lifting body, the worker exits from the operator's cab, and a large number of loads stored in the storage container or a large number placed on the pallet. Pick as many hands as you need out of the above.

During the manual picking operation by such an operator, even if another operator mistakenly operates the ground-side control means to automatically perform the picking operation, the first operation is performed. Since the key has already been extracted from the ground-side control means and inserted into the external key switch, another operator cannot operate the ground-side control means. As a result, it is possible to ensure the safety of the worker who is performing the manual picking work inside the safety fence.

According to a second aspect of the present invention, when both the external key switch and the internal key switch are switched to the manual picking mode position and the opening / closing detection means detects the opening of the door, the power supply is shut off to put in / out the device. It is characterized in that a control means for emergency stop is provided.

According to this, both the external key switch and the internal key switch are switched to the manual picking mode position during the manual picking operation. Therefore, if another worker accidentally opens the door while trying to enter the inside of the safety fence during the manual picking operation, the opening / closing detection device detects the opening of the door and the control means shuts off the power. Since the loading / unloading device is brought to an emergency stop, it is safe for another worker to accidentally enter the inside of the safety fence.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to FIG.
This will be described with reference to FIG. As shown in FIGS.
The automated warehouse 1 includes a shelf 2, a loading / unloading device 4 that travels along a fixed path 3, a conveyor 5 for loading and unloading installed at one end of the shelf 2, and a person entering the fixed path 3 from entering. It comprises a safety fence 6 for preventing and a ground-side control panel 7 (an example of ground-side control means) arranged outside the safety fence 6 and capable of operating the loading / unloading device 4.

The shelf 2 has a plurality of storage parts 8 vertically and horizontally.
A storage container 10 storing a large number of loads 9 is stored in these storage portions 8. Further, the loading / unloading device 4 is provided with a traveling body 12 supported by the traveling rails 11 on the fixed path 3 to travel freely, an elevating body 13 provided on the traveling body 12 and elevating, and an elevating body 13 thereof. And a retractable loading / unloading tool 14 (fork, etc.) for loading / unloading the storage container 10 to / from the storage section 8, a driver's cab 15 provided on the elevating / lowering body 13 and into which an operator can get in, and this operation A driver's cab-side control panel 16 (an example of driver's cab-side control means) disposed inside the chamber 15 and capable of manually operating the above-mentioned loading / unloading device 4
And a traveling-body-side control panel 17 that is disposed below the traveling body 12 and that allows the loading / unloading device 4 to be manually operated.

When the storage container 10 is supported on the lifting / lowering body 13 while being displaced from the proper position on the loading / unloading tool 14,
A package detector 18 is provided which is turned on to detect an abnormality. When the package detector is turned on, the loading / unloading device 4 is temporarily stopped. (At this time, the power of the loading / unloading device 4 is still turned on.) The ground control panel 7 is provided with a ground key switch 19. As shown in Figure 6, this ground side key switch
19 is unit 21, picking via the first key 20
It can be switched to each switching position of 22 and remote 23.
The first key 20 can be removed only at the picking 22 position, and by removing the first key 20 from the ground side key switch 19, the loading / unloading device 4 is temporarily stopped at the home position 24. (At this time, the power of the loading / unloading device 4 is still turned on.) At the unit 21 position and the remote 23 position, the first key 20 is locked to prevent removal.

The driver's cab side control panel 16 is provided with a driver's cab side key switch 25. As shown in FIG.
The operator's cab side key switch 25 is switchable via the second key 26 to each of the switching positions of the unit 27, the picking 28 and the manual 29. Note that the second key 26 can be removed only at the unit 27 position, and the picking 28 position and the manual
In the 29 position, the second key 26 is locked to prevent extraction.

Further, the traveling body side control panel 17 is provided with a traveling body side key switch 30. As shown in FIG. 8, the traveling body side key switch 30 is provided with a second key 26,
It is possible to switch between automatic 31 and manual 32 switching positions.
The second key 26 can be pulled out only at the automatic 31 position, and at the manual 32 position, the second key 26 is locked to prevent the pulling out.

As shown in FIG. 1, the safety fence 6 is provided with a door 33 that can be opened and closed. The opening / closing of the door 33 is detected by a limit switch 34 (an example of opening / closing detecting means). As shown in FIG. 4, the ground-side control panel 7 and the traveling-body-side control panel 17 exchange control signals by an optical transmission method, and the traveling-body-side control panel 17 and the cab-side control panel 16 use a connection cable. The control signal is transmitted and received via. Reference numeral 35 is a host computer that controls the ground-side control panel 7.

As shown in FIG. 1, an external key switch 37 is provided outside the safety fence 6 and near the door 33.
An internal key switch 38 is provided inside the safety fence 6 and near the door 33. As shown in FIG. 9, the external key switch 37 is switchable via the first key 20 between the picking 39 which is the manual picking mode position and the unit 40 which is the automatic operation mode position. The first
The key 20 of can be removed only at the unit 40 position,
In the picking 39 position, the first key 20 is locked to prevent extraction.

Further, as shown in FIG. 10, the internal key switch 38 can be switched via the second key 26 between a picking 42 which is a manual picking mode position and a unit 43 which is an automatic operation mode position. Is. Note that the second key 26 can be removed only at the picking 42 position, and at the unit 43 position, the second key 26 is locked to prevent removal.

Next, the structure of the power feeding circuit 45 for feeding power to the above-mentioned loading / unloading device 4 will be described. That is, as shown in FIGS. 1 and 5, a current collecting rail 46 is installed along the traveling rail 11, and a current collecting 47 provided on the traveling body 12 is a current collecting rail.
Driving power is supplied to the loading / unloading device 4 by slidingly contacting the sliding member 46. 48 is a main power supply line, and the power supply line 48 and the current collecting rail 46 are connected by a power supply line 49. A circuit breaker 50 is provided in the middle of each power supply line 49, and when the circuit breaker 50 breaks, electric power is not supplied to the current collecting rail 46.

Reference numeral 52 is a control circuit (an example of control means) for controlling the circuit breaker 50, which is an interlock circuit of the circuit breaker 50.
53 and an exciting circuit 54 of the circuit breaker 50. The interlock circuit 53 includes an exciting coil 56 of a relay connected to a control power line 55, an external key switch 37
To the unit 40 position (see FIG. 9) and the second contact 58 to be turned on when the external key switch 37 is switched to the picking 39 position (see FIG. 9). And pick the above internal key switch 38 42
A third contact 59 that is turned on when switched to the position (see FIG. 10), the limit switch 34 that is turned on when the opening of the door 33 is detected, the reset switch 60, and the exciting coil 56 of the relay. Is connected with an a contact 61 which is turned on when is excited. When the a-contact 61 is turned on, the exciting coil 56 of the relay is maintained in the energized state regardless of the first to third contacts 57, 58, 59 and the limit switch 34, and is reset by the pushing operation of the reset switch 60. It

The exciting circuit 54 of the circuit breaker 50 is turned off when the power switch 63 and the exciting coil 56 of the relay are excited by the exciting coil 62 of the circuit breaker connected to the control power line 55. B contact 64 and the exciting coil of the circuit breaker
It is configured by connecting an auxiliary contact 65 which is turned on when 62 is excited.

The operation of the above configuration will be described below.
First, (a)-(e) and the figure which show operation | movement of the taking in / out device 4 with respect to the switching position of each key switch 19,25,30,37,38.
Explanation will be given based on 11.

(A) When performing automatic picking work,
The ground side key switch 19 of the ground side control panel 7 is set to the unit 21 position, and the traveling body side key switch 30 of the traveling body side control panel 17 is set.
Is automatically set to the 31 position, and the cab side key switch 25 of the cab side control panel 16 is set to the unit 27 position. In this state, according to a command signal from the host computer 35, the traveling body 12 travels, the elevating body 13 moves up and down, and the loading / unloading tool 14 moves out / out to automatically store the storage container 10 from the target storage portion 8 of the shelf 2. Take it out. After that, the storage container 10 taken out, as shown by the phantom lines in FIG.
When the 14 moves in and out, it is automatically transferred to the loading / unloading conveyor 5,
The conveyor 5 for loading and unloading conveys the inside of the safety fence 6 to the outside. Then, outside the safety fence 6, the worker picks a required number of loads 9 from the storage container 10. Then, the storage container 10 is automatically returned to the storage portion 8 of the shelf 2 in the reverse order of the above.

At this time, the first key 20 is inserted into the ground-side key switch 19 and locked at the position of the unit 21 to prevent removal. Also, the external key switch 37
The internal key switch 38 and the internal key switch 38 are switched to the positions of the units 40 and 43, respectively, and the second key 26 is inserted into the internal key switch 38.

(B) Further, by switching the ground side key switch 19 of the ground side control panel 7 to the remote 23 position, the operator operates the ground side control panel 7 to put in / out the device 4.
It is possible to take out the storage container 10 from the intended storage portion 8 of the shelf 2 and perform the picking work outside the safety fence 6 by operating.

(C) When manually picking,
The operator switches the ground side key switch 19 to the picking 22 position and removes the first key 20 from the ground side key switch 19. As a result, the loading / unloading device 4 is at the home position.
Pause at 24. Thereafter, the operator inserts the first key 20 into the external key switch 37 to switch from the unit 40 position to the picking 39 position. This allows the first key 20
Is locked and extraction is prevented.

Then, the operator opens the door 33 and opens the safety fence 6.
After closing the door 33 and closing the door 33, the internal key switch 38 is switched from the unit 43 position to the picking 42 position, and the second key 26 is removed from the internal key switch 38. After that, the worker gets into the cab 15 of the loading / unloading device 4,
Insert the second key 26 into the cab side key switch 25 of the cab side control panel 16 and insert the cab side key switch 25 into the unit 27.
Switch from position to manual 29 position. As a result, it becomes possible to operate the loading / unloading device 4 from the cab side control panel 16, and as shown in FIG.
16 is operated to operate the loading / unloading tool 14, and the storage container 10 is taken out from the intended storage portion 8 of the shelf 2 onto the elevating / lowering body 13, and the operating room
It is possible to pick up a required number of loads 9 from the storage container 10 on the elevating body 13 after exiting from the portion 15. After that, by operating the control panel 16 on the cab side
It suffices to return 10 to the storage section 8 of the shelf 2. At this time, the second key
26 is locked at the 29 position of the manual key switch 25 on the cab side to prevent extraction.

During picking, the first key
Since 20 is pulled out from the ground side key switch 19 and locked at the picking 39 position of the external key switch 37 to prevent the pulling out, another worker mistakenly made a mistake on the ground side control panel 7.
Can not be operated. As a result, it is possible to ensure the safety of the worker who is performing the manual picking work inside the safety fence 6.

After the manual picking work is completed, the operator returns the loading / unloading device 4 to the home position 24, and the second
The key 26 is switched to the position of the unit 27, the key switch 25 on the driver's cab side is pulled out, and the driver's cab 15 is lowered. afterwards,
The operator inserts the second key 26 into the internal key switch 38 to switch from the picking 42 position to the unit 43 position. As a result, the second key 26 is locked and the removal thereof is prevented. After that, the worker opens the door 33 and goes outside the safety fence 6.

(D) In addition, when the operator gets in the cab 15 and inserts the second key 26 into the cab key switch 25 to switch to the picking 28 position, the operator puts it in and out based on a command from the host computer 35. The device 4 is automatically operated, and the storage container 10 stored in the target storage portion 8 of the shelf 2 is automatically taken out onto the elevating body 13. Then, the operator picks the required number of loads 9 from the storage container 10 on the elevating body 13.

(E) Furthermore, during the automatic picking operation, when the storage container 10 is deviated on the loading / unloading tool 14 and the package shape detector 18 detects an abnormality and is turned on, the loading / unloading device 4 is Pause. At this time, the operator switches the ground-side key switch 19 to the picking 22 position, pulls out the first key 20 from the ground-side key switch 19, inserts the first key 20 into the external key switch 37, and moves to the picking 39 position. To the inside of the safety fence 6 by opening the door 33
After closing 33, the internal key switch 38 is switched to the picking 42 position, the second key 26 is removed from the internal key switch 38, and the second key 26 is used as the vehicle body side key switch 30 of the vehicle body side control panel 17. Then, the traveling body side key switch 30 is switched from the automatic 31 position to the manual 32 position. As a result, it is possible to operate the loading / unloading device 4 from the traveling body side control panel 17, and the operator operates the traveling body side control panel 17 to lower the elevating body 13 and shift the storage container on the loading / unloading tool 14. After correcting the posture of 10 correctly, the loading / unloading device 4 is run to the home position 24.

Next, the operation of the control circuit 52 shown in FIG. 5 will be described. When the picking operation is automatically performed as shown in (a) above, the power switch 63 is turned on, and the external key switch 37 is switched to the unit 40 position, so that the first
The contact 57 is turned on, the second and third contacts 58 and 59 are both turned off, and the limit switch 34 is turned off because the door 33 is closed. Therefore, the exciting coil 56 of the relay is de-excited, the a contact 61 is turned off, and the b contact 64 is turned on, so that the exciting coil 62 of the circuit breaker is excited to turn on the circuit breaker 50 and the auxiliary circuit. Contact 65 turns on. This allows power to be drawn from the power line 48 to the collector rail 46.
Is supplied to the loading / unloading device 4 from the current collecting rail 46 via the current collector 47, so that the loading / unloading device 4 operates.

When the operator accidentally opens the door 33 during the automatic picking operation, the limit switch 34 is turned on, the exciting coil 56 of the relay is excited, the a contact 61 is turned on, and the b contact 64 is turned on. Is turned off, whereby the exciting coil 62 of the circuit breaker is de-excited, the circuit breaker 50 is cut off, and the auxiliary contact 65 is turned off. As a result, the power supply from the power supply line 48 to the current collecting rail 46 is shut off, and the loading / unloading device 4 is brought to an emergency stop.

Also, as shown in (b), when the ground control panel 7 is operated to operate the loading / unloading device 4 and picking is performed, similarly, when the operator accidentally opens the door 33,
The power is cut off, and the loading / unloading device 4 is brought to an emergency stop.

In the case of manually performing the picking work as shown in (c), the operator inserts the first key 20 into the external key switch 37 and switches to the picking 39 position, so that the first contact 57 Is turned off, the second contact 58 is turned on, and the third contact 59 is turned off. Then, when the operator opens the door 33 to enter the inside of the safety fence 6, the limit switch 34 is turned on,
Since both the first and third contacts 57, 59 are off, the exciting coil 56 of the relay is de-excited. Therefore, the b contact 64 is turned on, the exciting coil 62 of the circuit breaker is excited, and the circuit breaker 50 is turned on. Therefore, the power is not cut off, and the power is supplied from the power supply line 48 to the current collecting rail 46. . Thereby, the subsequent manual picking work can be continued quickly and normally.

When an operator enters the inside of the safety fence 6 and closes the door 33, the limit switch 34 is turned off, but the exciting coil 56 of the relay remains unexcited. Then, the operator uses the second key 26 to pick the internal key switch 38.
By switching to the 42 position, the third contact 59 is turned on. After that, the operator gets into the cab 15 and operates the loading / unloading device 4 from the cab control panel 16. At this time, if another worker accidentally opens the door 33, the limit switch 34 Turn on the relay excitation coil
56 is excited. Therefore, the a contact 61 is turned on,
The b-contact 64 is turned off, so that the exciting coil 62 of the circuit breaker is de-energized, the circuit breaker 50 is cut off, and the auxiliary contact 65 is turned off. As a result, the power collection rail from the power line 48
The power supply to 46 is cut off, and the access device 4 is brought to an emergency stop.

Also, when the operator enters the inside of the safety fence 6 and forgets to close the door 33 and switches the internal key switch 38 to the picking 42 position by using the second key 26,
Since the limit switch 34 is turned on and the third contact 59 is turned on, the exciting coil 56 of the relay is excited and the b contact is made.
64 is turned off, the exciting coil 62 of the circuit breaker is de-energized, the circuit breaker 50 is cut off, and the access device 4 is brought to an emergency stop.

Further, as shown in (d), when the loading / unloading device 4 is automatically driven based on a command from the host computer 35 and a worker gets into the cab 15 for picking work, (e) Similarly, when an operator operates the moving body side control panel 17 to operate the access device 4 as shown in FIG. 3, similarly, when another operator opens the door 33 by mistake, the circuit breaker 50 is shut off and the power supply is turned off. The power supply from the line 48 to the current collecting rail 46 is shut off and the loading / unloading device 4 is brought to an emergency stop.

In this way, when the loading / unloading device 4 is automatically operated based on the command of the host computer 35 or the operation of the ground side control panel 7, even if the operator accidentally opens the door 33, the loading / unloading device 4 Since 4 is in an emergency stop, it is safe for an operator to accidentally enter inside the safety fence 6. further,
If an operator is driving the loading / unloading device 4 inside the safety fence 6 or manually picking it, another operator accidentally opens the door.
Even if 33 is opened, the loading / unloading device 4 will be in an emergency stop, so it is safe for another operator to accidentally enter the inside of the safety fence 6.

In the above embodiment, as shown in FIG.
The ground side control panel 7 was installed outside the safety fence 6, but the safety fence 6
You may install in the place away from the outside. Further, in the above-mentioned embodiment, the limit switch 34 is used as the opening / closing detection means for detecting the opening / closing of the door 33, but a photoelectric switch or a proximity switch may be used.

Further, in the above-described embodiment, as shown in FIG. 2, the necessary number of loads 9 is picked out of the large number of loads 9 stored in the storage container 10, but they are placed on the pallet. A method of picking the required number of loads from among the large number of loaded loads may be used.

[0047]

As described above, according to the first aspect of the present invention, when the door is opened to enter the safety fence, even if the opening / closing detection means detects the opening of the door, the internal key is opened. When the switch is switched to the automatic operation mode position by the second key, and further, the external key switch is switched to the manual picking mode position, the power of the stopped loading / unloading device is not cut off, so that the manual picking operation is not performed. You can continue quickly and successfully.

Further, during the manual picking operation by the operator, even if another operator mistakenly operates the ground-side control means to perform the picking operation automatically, the first key is already used. Another operator cannot operate the ground-side control means because it is taken out of the ground-side control means and inserted into the external key switch. As a result, it is possible to ensure the safety of the worker who is performing the manual picking work inside the safety fence.

Further, according to the second aspect of the present invention, when the worker is working in the safety fence, both the external key switch and the internal key switch are switched to the manual picking mode position. If another worker inadvertently opens the door in this state, the opening / closing detection device detects the opening of the door and the control means shuts off the power to stop the loading / unloading device in an emergency. It is safe to enter inside the safety fence.

[Brief description of drawings]

FIG. 1 is a plan view of a main part of an automated warehouse according to an embodiment of the present invention.

FIG. 2 is a front view of a lifting / lowering body of a loading / unloading device of an automatic warehouse.

FIG. 3 is a front view of a loading / unloading device of an automatic warehouse.

FIG. 4 is a block diagram of a control system.

FIG. 5 is a diagram of a control circuit that controls a power supply system.

FIG. 6 is a diagram of a ground side key switch.

FIG. 7 is a diagram of a cab side key switch.

FIG. 8 is a diagram of a traveling body side key switch.

FIG. 9 is a diagram of an external key switch.

FIG. 10 is a diagram of an internal key switch.

FIG. 11 is a table showing the operation contents of the loading / unloading device with respect to the switching position of each key switch.

[Explanation of symbols]

 1 Automatic warehouse 2 Shelf 3 Constant path 4 Loading / unloading device 6 Safety fence 7 Ground side control panel (ground side control means) 9 Load 13 Lifting body 15 Operator's cab 16 Operator's cab side control panel (driver's cab side control means) 20 First Key 26 Second key 33 Door 34 Limit switch (opening / closing detection means) 37 External key switch 38 Internal key switch 39, 42 Picking (manual picking mode position) 40, 43 Unit (automatic operation mode position) 52 Control circuit (control means) )

Claims (2)

[Claims] 1. A shelf, a loading and unloading device for moving a load on and off the shelf while traveling on a fixed route, a safety fence for preventing a person from entering the fixed route, and an outside of the safety fence. And a ground-side control means capable of operating the loading / unloading device is provided, and the loading / unloading device includes a vertically movable lifting body, a driver's cab provided on the lifting / lowering body, and into which an operator can enter, An automatic warehouse having a driver's cab-side control unit that can be operated to operate the loading / unloading device, wherein the safety fence is provided with a door whose opening / closing is detected by an opening / closing detection unit, and the outside of the safety fence. A key switch is provided, and an internal key switch is provided inside, so that the above-mentioned ground side control means and an external key switch can be operated, and by removing from the above-ground side control means, said access device Is provided, and a second key that can operate the cab-side control means and the internal key switch is provided, and the external key switch is operated by the first key to set the manual picking mode position and automatic The internal key switch can be switched between a manual picking mode position and an automatic driving mode position by a second key, and the internal key switch can be switched between an automatic driving mode position by a second key. When the external key switch is switched to the manual picking mode position by the first key and the opening / closing detection means detects opening of the door, the power supply of the stopped loading / unloading device is not shut off. An automated warehouse characterized by that. 2. When the external key switch and the internal key switch are both switched to the manual picking mode position and the opening / closing detection means detects the opening of the door, a control means is provided for shutting off the power source and stopping the loading / unloading device in an emergency. The automatic warehouse according to claim 1, wherein the automatic warehouse is provided.