JP3438063B2 - Signal and power supply for automatic warehouse for explosion-proof and freezing - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic warehouse for handling an object having an explosion risk or an explosion-proof automatic warehouse or an warehouse where the material having an explosion risk may be filled with extremely low temperature. In an automatic warehouse for refrigeration, an explosion-proof / freezing automatic warehouse for sending and receiving various control signals and supplying various power power and equipment power supply between the stacker crane mounting board and the warehouse outer board installed outside the warehouse. The present invention relates to a signal / power supply device.

[0002]

2. Description of the Related Art Conventionally, this type of signal / power supply device for an automated warehouse has been equipped with a large number of signal cables and power supply cables or trolleys between the warehouse outer panel installed outside the warehouse and the loading panel mounted on the stacker crane. They are connected by wires, and various control signals are transmitted and received and power for motive power is supplied through the cables and trolley wires. Further, control functions such as traveling control of the stacker crane, raising / lowering control of the carriage, and control of the fork are provided in the control unit of the board on which the stacker crane is mounted.

[0003]

However, in the conventional signal / power supply device, a large number of signal cables and power supply cables are installed between the warehouse outer panel and the mounting panel in a special environment, that is, under the danger of explosion or extremely low temperature. Connected with cables and trolley wires. Therefore, the weight of the cable is heavy, and even if a cable holder that supports it is used with high strength, troubles such as damage and disconnection of the cable are likely to occur, and when these troubles occur, such an explosion Dangerous and dangerous under extremely low temperature environment, difficult and difficult repair and repair work is required. Further, there is a problem that the maintenance personnel must perform the maintenance work under such an environment because the control panel for controlling the stacker crane is on the mounting board.

The present invention has been made in view of the above-mentioned problems, and eliminates the above-mentioned problems, and carries out repair and repair work and maintenance work that are dangerous and difficult in the danger of explosion and in an environment of extremely low temperature. It is an object of the present invention to provide a signal / power supply device for an explosion-proof / freezing automatic warehouse that can be reduced in number.

[0005]

In order to solve the above-mentioned problems, the invention according to claim 1 is installed in the stacker crane mounted on the stacker crane of an explosion-proof automatic warehouse using a stacker crane and outside the automatic warehouse. a signal-feeding device of explosion-proof automated warehouse for transmitting and receiving and the feeding of various power sources of various control signals to and from the warehouse outside panel, at least various switches mounted board had chromatic conventional stacker crane, various test
Stacker that processes signals from output switches and sensors
Crane travel, carriage lift, fork loading
Out, transferred to safety check of the control functions in the warehouse outside panel, the <br/> utilized to reduce wiring bidirectional time division multiplex transmission method the number of signal lines for transmitting and receiving various control signals, the signal lines And various
It is characterized in that a suspension type cable is used as a power supply line for supplying power to the power supply.

Further, the invention according to claim 2 is for various control between a loading board mounted on the stacker crane of an automatic warehouse for freezing using a stacker crane and a warehouse outer board installed outside the automatic warehouse. a signal-feeding device of the refrigeration for the automatic warehouse for transmitting and receiving and the feeding of various power sources of the signal, at least the mounting board of the prior <br/> stacker cranes had Yes
Signals from seed switches, various detection switches and sensors
Processing, stacker crane traveling, carriage lifting,
Out of the load by the forks, transferred to safety check of the control functions in the warehouse outside panel, transmission and reception of various control signals and and two-way time division multiplex transmission method in an optical transmission without using a cable, various
An insulating trolley is used for the power supply line for supplying power to the power supply.

Further, the invention according to claim 3 is for various control between a loading board mounted on the stacker crane of an explosion-proof automatic warehouse using a stacker crane and a warehouse outer panel installed outside the automatic warehouse. a signal-feeding device of explosion-proof automated warehouse for transmitting and receiving and the feeding of various power sources of the signal, at least the mounting board of the prior <br/> stacker cranes had Yes
Signals from seed switches, various detection switches and sensors
Processing, stacker crane traveling, carriage lifting,
The control function for loading and unloading cargo with a fork and safety confirmation was moved to the outer panel of the warehouse, and among various control signals, at least the stacker crane's travel selection signal,
Forehead selection signal, travel motor and fork drive motor
Signal lines for transmitting and receiving brake activation signals and various power supplies
Using suspension type cable to the feeder for supplying power, characterized by using the optical transmission through the combination of the optical transmission device and a serial / parallel converter that does not use a cable for transmission and reception of other control signals.

The invention described in claim 4 is the same as claim 1
Or, in the signal / power supply device for an explosion-proof automatic warehouse as described in 3 above, directing the lifting motor of the stacker crane and its brake power supply to the lifting motor and its brake from the outer panel of the warehouse without passing through the loading panel of the stacker crane. Is characterized by.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing a configuration example of a signal / power supply device of an explosion-proof automatic warehouse according to claim 1. The signal / power supply device includes a loading board 20 mounted on a stacker crane (not shown) and a warehouse outer board 10 installed outside the automated warehouse. The warehouse outer panel 10 has a power supply device 11 and a control unit 1.
2. A wire-saving unit 13 for performing bidirectional time division multiplex transmission is provided.

Mounting board 20 mounted on the stacker crane
Is provided with a wire-saving unit 21, a relay control unit 22, a brake power supply unit 23, and a traveling / fork switching unit 24 which perform bidirectional time division multiplex transmission. Outer warehouse 10
An elevating motor 41 and a brake 42 are connected to the power supply device 11 of the vehicle via a suspension cable 31, and the traveling / fork switching section 2 is further connected via suspension cables 32 and 33.
4, the brake power supply 23 is connected. A traveling motor 43 and a fork driving motor 45 of the stacker crane are connected to the traveling / fork switching unit 24 of the mounting board 20, and a brake 44 of the traveling motor 43 and a brake of the fork driving motor 45 are connected to the brake power supply unit 23. 46 is connected.

Here, the suspension type cable has a construction in which the cable is suspended by using a suspending tool which moves with the movement of the stacker crane, and is also called a hanging cable.

Power is supplied from the power supply device 11 of the warehouse outer panel 10 to the lifting motor 41 and the brake 42 through a suspension cable (hanging cable) 31, and is supplied to the traveling / fork switching section 24 through the suspension cable 32. Is supplied to the brake power source 23 through the suspension cable 33. In addition, the wiring-saving unit 13 of the warehouse outer panel 10 and the wiring-saving unit 21 of the mounting panel 20.
And are connected by a suspension cable 34.

Wire-saving unit 13 and wire-saving unit 21
A large number of various control signals are transmitted and received via the suspension cable 34 by a known bidirectional time division multiplex transmission system. Therefore, the number of core wires of the suspension cable 34 can be extremely small, and for example, a 4-core cable can be used.

The relay control unit 22 of the mounting board 20 is connected to limit stop switches 47 and emergency stop switches such as upward / downward stop for raising / lowering the carriage, forward / backward stop for fork and forward / backward movement. There is. In addition, a wire-saving box 48 and a wire-saving box 50 are connected to the wire-saving unit 21, various switches 49 such as optical fiber switches for traveling are connected to the wire-saving box 48, and various detections are made in the wire-saving box 50. Switch and sensor 51 are connected.

Signal transmission / reception between the wire-saving unit 21 and the wire-saving box 48 and the wire-saving box 50 is carried out by a known bidirectional time division multiplex transmission system. The wiring for connecting the boxes 50 can be reduced. For example, a 4-core cable can be used.

The relay control unit 22 processes the signal from the limit stop limit switch 47 and the signal from the various switches 49 input through the wire-saving unit 21 to drive the traveling / fork switching unit 24 and the brake power supply unit 23. Controlling and lifting motor 41, brake 42, traveling motor 4
3, the drive of the brake 44, the fork drive motor 45, and the brake 46 is stopped.

It should be noted that here, as the cable for supplying power to the traveling motor 43 and the fork driving motor 45, one suspension type cable 32 is used, and a brake 44 for the traveling motor is used.
A single suspension type cable 33 is used as a cable for supplying power to the brake 46 for the fork and the cable is saved, but this is because of the structure of the stacker crane, the traveling motor 43 and the fork driving motor. Since 45 is never driven at the same time, it can be controlled by the same power supply. As a result, the number of cables can be reduced.

The control section 12 of the warehouse outer panel 10 has the control function of the control section of the conventional stacker crane mounting panel. That is, it processes signals from various switches 49, various detection switches and sensors 51 included in the control unit of the conventional mounting board, and performs control functions such as traveling of a stacker crane, raising / lowering of a carriage, loading / unloading of a load by a fork, and safety confirmation. It has been moved to the control unit 12 of the warehouse outer panel 10. Therefore, the number of signals transmitted and received between the mounting board 20 and the warehouse outer board 10 increases, but since the signals are transmitted between the wire-saving unit 13 and the wire-saving unit 21 by the bidirectional time division multiplex transmission method, As described above, the number of core wires of the suspension cable 33 can be small.

A control function for safety confirmation by the extreme stop limit switch 47 and the like is provided in the relay control section 22 of the mounting board 20, and the direct drive motor 43, the fork drive motor 45, the brake 44 and the brake 46 are provided. Since it is controlled, accidents due to erroneous signal transmission can be avoided.

Further, in the above-mentioned embodiment, the power supply cable is used for the lifting motor and the brake driving, the traveling / running
Although three cables for driving the fork and one for driving the brake are used, the power supply cable is not limited to this, and may be more or less, and a suspension cable is used for this.

FIG. 2 is a diagram showing an example of various detection switches and sensors 51 connected to the wiring-saving box 50. As shown in the figure, the wiring-saving box 50 includes a right pallet detection photoelectric switch sensor 51a and a left pallet detection photoelectric switch sensor 51.
b, lifting optical fiber switch 51c (4 sets), loaded optical fiber switch 51d (1 set), loaded optical fiber switch 51e (2 sets), load collapse W fiber switch 51f (4 sets), load collapse L fiber switch 51g
(4 sets), right fork stop position detection limit switch 5
1h, left fork stop position detection limit switch 51i
Are connected.

Mounting board 20, wiring-saving box 48 and wiring-saving box 5
No. 0 is an explosion proof type, that is, a pressure resistant structure that does not affect the outside even if it explodes or ignites inside. Further, the right pallet detection photoelectric switch sensor 51a, the left pallet detection photoelectric switch sensor 51b, the right fork stop position detection limit switch 51h, and the left fork stop position detection limit switch 51i are explosion-proof specifications, and their output line and the mounting board connection part 50a are provided. Is an explosion-proof cable gland. Further, the wiring connection portion 50b for connecting the wiring-saving box 50 to the wiring-saving unit 21 of the mounting board 20 is also an explosion-proof cable gland.

By configuring the signal / power supply device of the explosion-proof automatic warehouse as described above, the control function for controlling the stacker crane is transferred to the control unit 12 of the warehouse outer panel 10, so that maintenance personnel may be at risk of explosion. In this environment, no maintenance work is performed, and the maintenance work does not cause an explosion.

Further, the control function is controlled by the control unit 1 of the warehouse outer panel 10.
By shifting to No. 2, the number of transmission and reception of signals such as control signals between the warehouse outer panel 10 and the loading panel 20 is increased.
Wire-saving unit 13 of 2 and wire-saving unit 2 of mounting board 20
Since the signal transmission / reception between 1 is performed by a well-known bidirectional time division multiplex transmission method, the number of core wires of the suspension cable 34 can be extremely small, and the breakage or damage such as disconnection of the suspension cable 34 can be reduced. The repair work is also reduced. Further, since the number of core wires is small, the weight of the suspension cable 34 is light, it is not necessary to use a strong holder for suspending the cable, and the life is extended.

FIG. 3 is a diagram showing a configuration example of a signal / power supply device of an automatic warehouse for freezing according to a second aspect. In the same figure, the parts given the same reference numerals as in FIG. 1 indicate the same or corresponding parts. The signal / power supply device of the automatic warehouse for freezing is similar to the signal / power supply device of the explosion-proof automatic warehouse shown in FIG.
And the mounting board 20, and the warehouse outer board 10 and the mounting board 2
The structure inside 0 is the same as the signal / power supply device of the explosion-proof automatic warehouse.

The signal / power supply device of the automatic warehouse for freezing is shown in FIG.
The difference from the signal / power supply device of the explosion-proof automatic warehouse shown in
Power lines 61a, 62a, 63a and shoes 61b, 62b, 6 are respectively supplied to the lifting motor 41, the brake 42, the traveling / fork switching unit 24, and the brake power supply unit 23.
The use of the insulating trolleys 61, 62, 63 composed of 3b and the optical transmission 64 for transmission / reception between the wiring-saving unit 13 of the warehouse outer panel 10 and the wiring-saving unit 21 of the mounting panel 20 do not use a suspension cable. It is a point. Here, the insulating trolley has a structure in which, for example, the overhead wires 61a, 62a, 63a are covered with an insulating material, and the overhead wire portion is exposed only at the portions that are in sliding contact with the shoes 61b, 62b, 63b.

In FIG. 3, reference numerals 65 and 66 denote photoelectric converters, which are the wire-saving unit 13 and the wire-saving unit 21.
The electrical signal from the optical converter is converted into an optical signal and transmitted to the photoelectric converter 65 or 66, and the optical signal from the photoelectric converter 65 or 66 is received and converted into an electrical signal.
And to the wire-saving unit 21. Between the wire-saving unit 13 and the photoelectric converter 65, between the wire-saving unit 21 and the photoelectric converter 66, and between the wire-saving unit 13
A well-known bidirectional time division multiplex transmission system is used for transmission and reception of a signal between the wiring-saving unit 21 and the wiring-saving unit 21 to reduce wiring.

By configuring the signal / power supply device of the automatic warehouse for freezing as described above, the insulating trolleys 61, 62, 63 are provided.
Therefore, it is not necessary to take any special measures even under the extremely low temperature of a frozen warehouse. On the other hand, the suspension type cable has a problem in that the covering material (rubber or the like) is hardened at an extremely low temperature and loses flexibility, resulting in damage or service life. Similarly, since optical transmission is used for transmission between the wire-saving unit 13 and the wire-saving unit 21, it is not necessary to take special measures under extremely low temperatures.

The wiring-saving box 48, the wiring-saving box 50, and the mounting board 20 have cold-resistant specifications (for example, a heater or the like is used to maintain a predetermined temperature) so that they can sufficiently function at extremely low temperatures. To do. The various switches 49, various detection switches and sensors 51 are also cold-resistant.

Further, in the above-described embodiment, the power supply insulating trolley has three motors for raising and lowering and driving the brake, driving for running / fork, and driving the brake.
The power feeding insulating trolley is not limited to this, but may be more or less than this, and the insulating trolley is used for this.

FIG. 4 is a diagram showing a configuration example of a signal / power supply device of an explosion-proof automatic warehouse according to a third aspect. The difference between this signal / power supply device and the signal / power supply device in FIG.
A serial / parallel converter 70 and an optical transmission device (photoelectric converter) 71 are used in place of the wire-saving unit 13 of 0, and a serial / parallel converter 72 and an optical transmission device (photoelectric converter) 73 are used in place of the wire-saving unit 21. The point that it is used and the point that a suspension cable 74 for transmitting and receiving a signal is provided between the control unit 12 and the relay control unit 22. Instead of the wiring-saving box 48 and the wiring-saving box 50, an ordinary terminal box with explosion-proof specifications. 75 and 76 (some of which include an optical fiber unit) are used, and other points are substantially the same as those of the signal / power supply device of FIG.

The serial / parallel converter 70 and the serial / parallel converter 72 are known ones. The serial / parallel converter 70 converts a parallel signal from the control section 12 into a serial signal, and transmits it via the optical transmission device 71. Optically transmits to the optical transmission device 73, and the serial / parallel converter 72
Converts a parallel signal from the terminal box 75 and the terminal box 76 into a serial signal and optically transmits the serial signal to the optical transmission device 71 via the optical transmission device 73.

Among the signals transmitted and received by the suspension cable 34 of FIG. 1, the signals selected by the suspension cable 74 include a stacker crane traveling selection signal (forward / backward selection signal) and fork selection (fork left / right selection). The signals are a brake operation signal of the traveling motor and the fork drive motor. These signals are signals that are not susceptible to delay, and in the serial / parallel conversion signal using the serial / parallel converters 70 and 72, it takes time to transmit / receive the signal, and a signal delay occurs. Therefore, this signal is transmitted through the suspension cable 74. Send and receive via. By doing so, a lightweight cable with a small number of core wires can be used as the suspension cable 74, and the normal communication method can be used without using advanced communication technology such as bidirectional time division multiplex transmission method. You can

A control signal which allows a slight delay in transmission / reception is performed by serial / parallel conversion having a simple structure.
That is, the parallel control signals from the terminal boxes 75 and 76 and the control unit 12 are converted into serial signals by the serial / parallel converters 70 and 72, and transmission / reception is performed between the optical transmission devices 71 and 73.

The power supply for the lifting motor 41 and its brake 42 does not pass through the mounting board 20, but directly to the lifting motor 41 and its brake 42 from the power supply device 11 of the warehouse outer panel 10 via the suspension cable 31. Supply.

[0036]

As described above, according to the present invention, the following excellent effects can be expected. (1) According to the invention of claim 1, since the control function of the loading board of the stacker crane is transferred to the warehouse outer board,
Eliminates the need for maintenance work in an explosive environment. In addition, since the number of signal lines for transmitting and receiving various control signals is reduced by using the bidirectional time division multiplex transmission system, and a suspension type cable is used for the signal lines and the power supply line for the power source, it can be stored outside the warehouse. Explosion proof because the number of wires for transmitting and receiving control signals between the panel and the mounting panel is small, and the occurrence of failures such as wire breakage and damage is reduced, resulting in less repair work in environments where there is a risk of explosion. It has excellent specifications.

(2) According to the second aspect of the present invention, the control function of the mounting board of the stacker crane is transferred to the outer panel of the warehouse, and various control signals are transmitted and received by optical transmission without cables. Since an insulated trolley is used for the power supply line for the power supply, there is no maintenance work at extremely low temperatures, there is no wiring for sending and receiving control signals between the warehouse outer panel and the loading panel, and there are few failures or damages such as disconnection. It has excellent cold resistance.

(3) According to the invention described in claim 3, among various control signals, a suspension cable is used for transmitting and receiving a signal which is reluctant to delay signal transmission and reception, and for transmitting and receiving other control signals. In addition to the effect of the invention described in claim 1, the suspension type cable has a small number of cores for transmitting and receiving a signal which is averse to delay, because optical transmission is performed by a combination of an optical transmission device and a serial / parallel converter that does not use a cable. It is possible to use a normal transmission method (not an advanced communication method such as a bidirectional time division multiplex transmission method), and to send / receive other control signals by serial / parallel conversion with a simple configuration. it can.

[Brief description of drawings]

FIG. 1 is a diagram showing a configuration example of a signal / power supply device of an explosion-proof automatic warehouse according to claim 1.

FIG. 2 is a diagram showing an example of various switches and sensors connected to a wiring-saving box.

FIG. 3 is a diagram showing a configuration example of a signal / power supply device of an automatic warehouse for freezing according to claim 2.

FIG. 4 is a diagram showing a configuration example of a signal / power supply device of an explosion-proof automatic warehouse according to claim 2;

[Explanation of symbols]

10 Warehouse outer panel 12 Control unit 13 Wire-saving unit 20 board 21 Wire-saving unit 22 Relay controller 23 Brake power supply 24 Travel / fork switching section 31 Suspended cable 32 suspension cable 33 Suspended cable 34 Suspended cable 41 Lifting motor 42 brake 43 Traveling motor 44 brake 45 Fork drive motor 46 brake 47 limit stop limit switch 48 Wire-saving box 49 Various switches 50 reduced wiring box 51 Various detection switches and sensors 61 insulating trolley 62 insulating trolley 63 insulated trolley 64 optical transmission 65 photoelectric converter 66 photoelectric converter 70 Serial / parallel converter 71 Optical transmission equipment 72 Serial / parallel converter 73 Optical transmission equipment 74 Suspended cable 75 terminal box 76 terminal box

Front page continuation (58) Fields surveyed (Int.Cl. ⁷ , DB name) B65G 1/04 543 B65G 1/04 531

Claims (4)

(57) [Claims] 1. Transmission and reception of various control signals and power supply of various power sources between a loading board mounted on the stacker crane of an explosion-proof automatic warehouse using a stacker crane and a warehouse outer panel installed outside the automatic warehouse. Automatic warehouse signal for explosion protection
A power supply device, small mounting board of the prior art the stacker crane has been closed
From at least various switches, various detection switches and sensors
Signal of the stacker crane,
The control functions for raising and lowering the ridge, loading and unloading the load with a fork, and confirming the safety are transferred to the outer panel of the warehouse, and the number of signal lines for transmitting and receiving the various control signals is controlled by the bidirectional time division multiplex transmission method. Reduced wiring and supply power to the signal line and various power sources
Cormorant signal-feed unit explosion-proof automated warehouse, characterized in that using a suspension type cable to the power feeder cables. 2. Transmission / reception of various control signals and power supply of various power sources between a loading board mounted on the stacker crane of an automatic warehouse for freezing using a stacker crane and a warehouse outer panel installed outside the automatic warehouse. Signal of automatic warehouse for freezing
A power supply device, small mounting board of the prior art the stacker crane has been closed
From at least various switches, various detection switches and sensors
Signal of the stacker crane,
Control functions for raising and lowering ridges, loading and unloading loads with forks, and confirming safety are transferred to the outer panel of the warehouse, and various control signals are transmitted and received by optical transmission without cables and bidirectional time division multiplex transmission system, A signal / power supply device for an automatic warehouse for freezing, characterized in that an insulating trolley is used for a power supply line for supplying power from the various power sources . 3. Transmission and reception of various control signals and supply of various power sources between a loading board mounted on the stacker crane of an explosion-proof automatic warehouse using a stacker crane and a warehouse outer panel installed outside the automatic warehouse. Automatic warehouse signal for explosion protection
A power supply device, small mounting board of the prior art the stacker crane has been closed
From at least various switches, various detection switches and sensors
Signal of the stacker crane,
Ridge up / down, loading / unloading of fork by fork, and transfer of control functions for safety confirmation to the outer panel of the warehouse.
At least the stacker clay that is reluctant to delay sending and receiving signals
Travel selection signal, fork selection signal, travel motor and
Sends and receives the brake operation signal of the fork drive motor
Characterized by using the optical transmission through the combination of the signal lines and the use of a suspension type cable to the feeder for supplying power of various power supplies, the optical transmission device and a serial / parallel converter that does not use a cable for transmission and reception of other control signals Signal and power supply equipment for explosion-proof automated warehouse. 4. The elevating motor of the stacker crane and its brake power source are directly led from the warehouse outer panel to the elevating motor and its brake without passing through the loading panel of the stacker crane. Alternatively, the signal / power supply device of the explosion-proof automatic warehouse according to item 3.