JP2530078B2 - Mobile shelf equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a movable shelf device in which a plurality of shelves are arranged so as to be movable, and more particularly to a movable shelf device capable of remote control.

[0002]

2. Description of the Related Art By selecting a passage selection switch,
From the relationship between the designated aisle position and the position of the moving shelf at that time, the moving shelf to be moved and the direction of its movement are determined, and the moving shelf is moved by the electric force according to this determination, and the work passage is set to the specified position. There is already known a moving rack device configured to be formed in the above.

[0003]

The conventional moving rack device is
Since each movable rack itself is provided with a passage selection switch corresponding to the movable rack, it was necessary to go to the position of the movable rack at the aisle position to be formed and operate the movable rack's aisle selection switch. . Now, if it is possible to remotely control the movement of the mobile rack, a work corridor is formed at a desired position by the intensive operation of one mobile rack operator, and the work corridor is formed in the formed work corridor. Since it is possible for a person in charge of receipt and disbursement to carry out the receipt and payment work of the article, it should be possible to perform the cashier work efficiently. In addition, for example, it should be possible to remotely operate from the top of the article transport vehicle to form a work passage, and move the article transport vehicle to the formed work passage to perform the delivery work on the article transport vehicle. , It is possible to improve the efficiency of cashier work.

The present invention has been made in view of the above circumstances, and enables a working passage to be formed at a target position by a remote centralized operation, thereby improving working efficiency. Furthermore, it is an object of the present invention to provide a movable rack device that can ensure the safety of a person or the like who is working in the formed passage.

[0005]

The present invention provides a transmitter,
Designated switch provided for the above-mentioned transmitter corresponding to each shelf, for selecting a shelf for which a passage is to be formed by moving, a receiving circuit for receiving a signal from the transmitter, and provided for each shelf have been, a determination circuit that determines and outputs a signal for driving the shelves in response to the selection signal from the designated switch received by the receiving circuit, which is formed
A foreign matter detection means for detecting the entrance and exit of humans etc.
The above-mentioned foreign substance detection hand
A lock signal that locks the shelf immovable when a step is detected
The above object was achieved by providing a lock signal output circuit for outputting . The transmitter and the receiving circuit may transmit and receive signals by radio waves. The foreign matter detecting means may be an optical detecting means.

[0006]

When the designated switch corresponding to the shelf facing the passage to be formed is selected and operated among the designated switches provided in the transmitter, this selection signal is transmitted from the transmitter and received by the receiving circuit. The selection signal received by the receiving circuit is input to the discriminating circuit provided corresponding to each shelf, and the shelving is moved by the discriminating signal in the discriminating circuit of the shelf corresponding to the above-mentioned selection signal, and the shelf is moved to the target position. Is formed. When a person or the like enters or leaves the formed passage, the foreign matter detecting means detects it, and the foreign matter detecting means detects the shape described above.
When it is detected that a person, etc. has entered the created passage, this
The lock signal output circuit outputs a lock signal in response to the detection signal, and the rack is immovably restrained by the lock signal.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of a movable shelf device according to the present invention will be described below with reference to the drawings. In FIG.
Reference numerals 1 and 1a denote shelves, and the leftmost shelf 1a is fixed on the floor, while the other shelves 1 are collectively focused together with the fixed shelf 1a and are separated from each other to work between shelves. It is movably arranged so that a passage can be formed. Each of the movable shelves 1 has a passage forming control circuit board 22, and the fixed shelves 1
The circuit board a has a circuit board 22a and a circuit board 23 including a receiving circuit for a signal sent by remote control and a receiving signal discriminating circuit. The side panels of the shelves 1 and 1a are provided with operation panels 2 capable of inputting passage formation command signals by direct manual operation, and the side panels of the fixed shelves 1a are further provided with a general operation panel 2a. ing.

FIG. 2 shows a transmitter for remotely controlling the moving rack device as shown in FIG.
Includes a left row setting switch 25, a right row setting switch 26, a designation switch 27 for designating a number corresponding to each movable rack, a clear switch 28, an opening operation switch 29, a release switch 30, an emergency stop switch 31, and a power switch 32. Have

Next, a circuit configuration example used in the present invention will be described. In FIG. 3, the transmitter 24 transmits various command signals such as a left-row signal, a right-row signal, and a mobile rack selection signal.
It emits waves as a medium. Various signals emitted from the transmitter 24 using radio waves as a medium are received by the receiving circuit 1 in the circuit board 23.
It is designed to be received by 07 . Receiving circuit 1
Various signals received and discriminated in 07 are signal discriminating circuit 1
Sent to 10. The signal discriminating circuit 110 discriminates the presence or absence of an open signal of the first, second, ... Nth movable racks, and determines the open command signal input terminals O ₁ , of the circuit board 22 corresponding to the respective signals. Input to O ₂ ··· On.
This open signal may be considered to be the same as the open command signal manually input directly in the conventional mobile rack. Signal discrimination circuit 11
0 is also adapted to determine whether it is a remote operation or a direct manual operation. Further, the signal is switched according to the operation of the left row setting switch 25 or the right row setting switch 26, and the circuit board of each shelf. 22 is input.

In FIG. 3, reference numerals 5A and 5B denote light emitters, and reference numerals 6A and 6B denote light receivers. Light emitter 5
A and the light receiver 6A, and the light emitter 5B and the light receiver 6B respectively form a set, and one set of light emission, the light receivers 5A and 6A is the light emission of the other set, and the light receivers 5B and 6B are seen from the moving shelf side. When a person, a forklift, etc. enters the passage formed between the shelves outside, blocking light from the light emitter 5A and then blocking light from the light emitter 5B, and conversely exiting from the passage Is designed to block the light from the light emitter 5B and then the light from the light emitter 5A. Signal discrimination circuit 110
Signals from the light receivers 6A and 6B are input to the. The signal determination circuit 110 outputs or stops the lock signal Lo based on the signals from the light receivers 6A and 6B, and
A counter, which will be described later, is added or subtracted.

Next, a detailed configuration example of the signal discrimination circuit 110 will be described. In FIG. 4, the receiving circuit 107 is adapted to input a signal corresponding to each mode to the remote / manual switching circuit 104 depending on whether the remote operation mode or the manual operation mode is selected. In addition, when an open signal or its release signal corresponding to each movable rack is received, these signals are used to determine the corresponding one of the open / release circuits 105 provided corresponding to each movable rack. Further, when a right row signal or a left row signal is received, a signal corresponding to the received right row signal or left row signal is input to the right / left row switching circuit 106. The outputs of the open / release determination circuits 105 are input to the NOR circuit no _{1 all} together, and are also input to the operation circuits 109 provided corresponding to the respective shelves.

The remote / manual switching circuit 104 receives the signal indicating that the remote operation is performed, and the open / release determination circuit 105 is provided.
When the signal indicating the manual operation is input, the operation of each open / release determination circuit 105 is stopped, and the remote operation is disabled. The output signal of the right / left row switching circuit 106 is applied to each operation circuit 109. Reference numeral 101 is the above-mentioned
Foreign object detection circuit including light receivers 5A, 5B, 6A, 6B, 1
Reference numeral 02 denotes a counter that counts the number of people and the like in the passage by adding and subtracting with a signal from the foreign matter detection circuit 101, and 103 a display unit that displays the count value of the counter 102. Counter 10
2 indicates that when even one person or the like enters the passage and the count value is 1 or more, the "H" signal is sent to the AND circuit a ₁ (hereinafter,
It is adapted to apply to "a _1" is displayed as "a _2") for the AND circuit.

An "H" signal is issued as an operation signal when any of the shelves is moving, but when all the shelves are stopped, the operation signal becomes "L", which is the inverter IN ₁ . is adapted to be added to a ₁ is inverted to "H". The output of a _{1 and} the output of the NOR circuit no ₁ are added to the OR circuit O ₁ (hereinafter, the OR circuit is abbreviated as “O ₁ ” and “O ₂ ”), and the output of O ₁ is a lock signal output. It is adapted to be added to the circuit 108.

Fifth specific example of the remote / manual switching circuit 104
It will be described with reference to the drawings. In Figure 5, the remote control signal inputted from the receiving circuit is input via the O ₂ to the set terminal of the Furippufurotsupu circuit FF _1, thereby to remote control signal is output from the terminal Q of the flip-flop circuit FF ₁ Further, the manual operation signal input from the receiving circuit is input to the reset terminal of the flip-flop circuit FF ₁ , which causes the flip-flop circuit F to operate.
A manual operation signal is output from the output terminal Q of F ₁ . The remote / manual switching circuit 104 includes an initial reset circuit IR, which inputs an initial reset signal generated when the power is turned on to a set signal terminal of the flip-flop circuit FF ₁ via O ₂ , and It is designed to output to other circuits.

FIG. 6 shows a specific example of the open / release determination circuit 105. As shown in FIG. 6, the open / release determination circuit 105
Has a ₂ , a ₃ , O ₃ , and a flip-flop circuit FF ₂ . The a _2, and the open signal from the receiving circuit, and the remote control signal, the foreign matter detection signal from the foreign matter detection circuit 101 is input. The a _3, a release signal from the receiving circuit, remote control signal is input. The initial reset signal and the output signal of a ₃ are input to O ₃ . Further, in the flip-flop circuit FF ₂ , the output of a ₂ is applied to its set terminal and the output of O ₂ is applied to its reset terminal. Therefore, it is in the remote control mode, the open signal is input, and
On condition that foreign matter is foreign matter discrimination signal not contained within the passage "H", the flip from a _2-flop circuit F
The set signal is input to F ₂ and the flip-flop circuit F
A movement signal is output from the terminal Q of F ₂ . However, the flip-flop circuit FF ₂ is reset by being in the remote control mode and receiving the release signal, and the output of the movement signal is stopped.

FIG. 7 shows a concrete example of the right / left row switching circuit 106. The right / left row switching circuit 106 includes the receiving circuit 10
When the rightward operation signal is input from 7, this signal is differentiated by the differentiating circuit DIF ₁ and then the flip-flop circuit FF ₃
, The flip-flop circuit FF ₃ is set, and the right / left row signal at the terminal Q thereof becomes “H”, and this “H” signal becomes the right row signal, and from the receiving circuit 107 When the left-hand operation signal is input,
This signal is applied to the reset terminal of the flip-flop circuit FF ₃ after being differentiated by differentiator circuit DIF _2, thereby the flip-flop circuit FF ₃ is reset has been right-left row signal of the terminal Q becomes "L", This "L" signal becomes the left row signal.

FIG. 8 shows a concrete example of the operation circuit 109.
The operation circuit 109 has a ₄ , a _5, etc. The movement signals described in FIG. 6 are input to a ₄ and a ₅ , and the emergency stop signal is input via the inverter IN ₅ , and a ₅ is the same as in FIG. The right / left row signals at the terminal Q of the flip-flop circuit FF ₃ and the right / left row signals at the terminal Q of the flip-flop circuit FF ₃ are applied to a ₄ via the inverter IN ₆ . The emergency stop signal is the stop signal switch 3 in FIG.
Although it is output as the "H" signal by the operation of No. 1, this emergency stop means is not directly related to the gist of the present invention, so no specific received signal transmission means is disclosed.

Now, there is no emergency stop signal input, the right / left row signal is "H" and the right row signal is output, and the opening / closing of FIG. assuming that the movement signal is inputted from the discrimination circuit 105 is "H" signal is output from a _5, the "L" by the inverter iN ₈ after the "H" signal is delayed by the integrator circuit INT ₂ and it is inverted to be added to one end of the relay LL _1, the contact L ₁ is turned on relay LL ₁ is excited, and outputs a rightward signal. The relay contact L ₁ may be considered to be similar to a manual opening operation switch, and thus the rightward signal may be considered to be the same as that output by manual operation. Further, when the right / left row signal is “L” and the left row signal is output, the “H” signal is output from a ₄ and this “H” signal is delayed by the integrating circuit INT _1. After that, it is inverted to "L" by the inverter IN ₇ and applied to one end of the relay LR ₁ , so that the relay LR ₁ is excited and its contact R ₁ is turned on, so that the leftward signal is output. There is. This left row signal may be considered to be the same as the one output by the manual signal.

Since the embodiment of the present invention is constructed as described above, the remote operation mode is now set, and the selector switch 27 of the transmitter 24 is operated to select the surface of the passage formed between the shelves. It is assumed that the shelf located on the left side is designated, the right row setting switch 26 is then pressed, and the opening operation switch 29 is further pressed. By the selection operation of the designation switch 27 and the operation of the open operation switch 29, an open signal is input to the open / release determination circuit 105 corresponding to the selected shelf,
Signal is applied from a ₂ shown in Figure 6 to the set terminal of the flip-flop circuit FF _2, the flip-flop circuit FF ₂
A movement signal is output from the terminal Q of the. This movement signal is applied to the operating circuit as shown in FIG. Further, by operating the right row designating switch 26, a right row operation signal is applied to the right / left row switching circuit 106 shown in FIG. 7, whereby the flip-flop circuit FF ₃ is set, and the right row signal from its terminal Q. The "H" signal is output as and is applied to the operation circuit 109 of FIG.

In the operation circuit 109, the output of a ₅ becomes "H" as described above, the relay LL ₁ is excited, and its contact L ₁
By the operation of, the right row signal is output, which causes the shelf facing the left side of the passage to move to the right. As we all know,
The shelves are driven to the right or left by the forward and reverse motors,
The motor is driven by a known drive circuit. When the moved shelves come into contact with the opposite shelves, a limit switch (not shown) detects that the transfer margin is exhausted, and stops the motor drive circuit (not shown) to stop the movement of the shelves. After that, when the release switch 30 is operated, the open / release determination circuit 1 whose release signal corresponds to the selected shelf is displayed.
Flip-flop circuit FF ₂ via a ₃ and O ₃ in 05
Is input as a reset signal to the output of the movement signal. As a result, the output of the NOR circuit no _{1 in} FIG. 4 becomes “H”, a lock signal is output through O ₁ and the lock signal output circuit 108, and each shelf is interlocked so that each shelf cannot move. Be bound by.

Such an interlock can be applied even when the shelf is not in operation and a person or the like is in the passage. That is, when a person or the like is in the passage, the counter 102 adds an "H" signal to a, and
If the rack is not in operation, the operation signal of "L" is inverted to "H" by the inverter IN 1 and added to a, so that a
Becomes "H", which becomes O and the lock signal output circuit 1
This is because the lock signal will be output via 08. In this way, when people enter the passage, the lock
Signal is output from the signal output circuit and interlocked
The shelves are locked so that the shelves cannot be moved.
The safety of workers is ensured. Especially, the mobile shelf is operated wirelessly.
In the case of products that are designed to be
Let's move the mobile shelf without knowing that
However, as mentioned above, people etc. enter the passage.
And the shelves are locked so that they cannot be moved.
More effective from the aspect of ensuring safety in mobile rack devices
Can be turned on .

Next, when a passage is to be formed at another position, a shelf facing the already formed passage is selected to set the right row or the left row, and the opening operation switch 29 is operated. By performing such an operation, the shelf facing the already formed passage moves to the right or left, and the passage is formed at another position. In this way, according to the moving rack device of the above-described embodiment, the moving racks can be sequentially moved one by one with the already formed passage as the base point, thereby forming the passage at the desired position.

According to the embodiment described above, a designation switch provided on the transmitter corresponding to each shelf for selecting a shelf for forming a passage by moving the shelf, and a signal from the transmitter are received. Since the receiving circuit and the discrimination circuit which is provided corresponding to each shelf and which discriminates and outputs the signal for driving the shelf according to the selection signal from the designated switch received by the receiving circuit, is provided. A working passage can be formed at a target position by remote centralized operation by a transmitter. Therefore, for example, a work passage can be formed at a target position by a concentrated operation of one movable rack operator, and a cashier can carry out the receipt and delivery work of the articles in the formed work passage, or It is possible to perform remote control from the top of the article transport vehicle to form a work passage, and move the article transport vehicle to the formed work passage to carry out cashier work on the article transport vehicle, thereby improving work efficiency. Can be improved.

Next, another embodiment of the present invention will be described with reference to FIGS. 9 to 11. In this embodiment, when a signal from the already formed passage position to the position where the passage is to be formed next is input in advance and the start operation is performed next,
The operation is simplified by moving the shelves one by one one by one and stopping the operation when the pre-input signal is stopped, that is, when the passage is formed up to the position where the passage is to be formed. It has been transformed. In this embodiment, as shown in FIG. 10, the passages between the shelves to be formed are symbols,
, ..., When designing a passage, these symbols are designated. Limit switches Ls ₁ , Ls ₂ , Ls ₃ , ... For detecting whether or not there is room to move the shelves are provided on the side surface of each shelf. The transmitter need not be provided with a right row setting switch and a left row setting switch, and a start switch is provided instead of the opening operation switch.

Next, an example of the circuit used in this embodiment will be described with reference to FIG. However, the same components as those of the circuit example used in the first embodiment are given the same reference numerals, and different circuit components will be mainly described here. In FIG. 9, start / release circuit 1
12 outputs “H” signal when a start signal is input from the receiving circuit 107, and “L” when a release signal is input.
It is designed to output a signal. The output of the start / release determination circuit 112 is input to a ₁₂ , a ₁₃ , a ₁₄ , and a ₁₅ . a ₁₃ , a ₁₄ , a ₁₅ are provided according to the number of passages that can be formed, and each a ₁₃ , a ₁₄ , a ₁₅ also has a corresponding signal from the open circuit 105 and a corresponding limit. Switches Ls ₁ , Ls ₂ , Ls
The signal from ₃ is input. a ₁₃ , a
The outputs of ₁₄ and a ₁₅ are input to the open signal maintaining circuit 110 provided corresponding to a ₁₃ , a ₁₄ and a ₁₅ , respectively, and
It is adapted to be added to a ₁₂ via O ₁₁ or O ₁₂ , and further via an inverter IN ₁₂ . The signals of the limit switches Ls ₁ , Ls ₂ and Ls ₃ are also input to the open signal maintaining circuit 110, respectively.

An operating signal is also applied to the open signal maintaining circuit 110 via an inverter IN ₁₁ . The operation signal is applied to a ₁ via the inverter IN _11, and the signal from the counter 102 is also applied to a ₁ . The output of each open signal maintaining circuit 110 is input to the operation circuit 109 provided corresponding to each of them, and the open signal corresponding to the passage designated through these operation circuits is output. The outputs of the open signal maintaining circuits 110 are collectively input to the NOR circuit no, and the outputs of the NOR circuit no, a ₁ and a ₁₂ are input to O ₁₃ . When the output of O ₁₃ is "H", an interlock signal is output via the lock signal output circuit 108.

FIG. 11 shows a specific example of the open signal maintaining circuit 110. A driving signal input through the inverter IN _11, open signal input via the a _13, a ₁₄ or a _15, etc. is added to a _6, the output of a ₆ via a differentiating circuit DIF ₁₁ It is inputted as a set signal of the flip-flop circuit FF and outputted as an open signal from the terminal Q of the flip-flop circuit FF. On the other hand, the signal from the limit switch Ls ₁ , Ls ₂ or Ls ₃ is input as the reset signal of the flip-flop circuit FF via the inverter IN ₁₃ and the differentiating circuit DIF ₁₂ , so that the output of the open signal from the terminal Q is stopped. It has become.

In the above embodiment, it is now assumed that all the shelves shown in FIG. 10 are converged to the left to form a passage, and that the passage is formed from this state. Specify the, by operating the specified switch, and then operate the start switch. The order of designation by the designation switch is arbitrary, and the point is that it is sufficient to successively designate from the already formed passage number to the passage number to be formed. Open circuit 105 corresponding to the designated passage number
Outputs an "H" signal as an open signal, thus a ₁₄ and a
Added to ₁₅ . Also, output from the start-release circuit 112 by operating the start switch "H" signal is applied to _{a 13, a 14, a 15} .

On the other hand, the limit switch Ls _{3 on the} shelf facing the formed passage does not operate and it is detected that there is a transfer margin, so the signal from the limit switch Ls ₃ to a ₁₅ becomes "H", Therefore, the output of a ₁₅ is input as an open signal to a ₆ of the opening signal maintaining circuit 110 becomes "H". Now, if none of the shelves are working,
Since the operation signal of “L” is inverted to “H” by the inverter IN ₁₁ and added to a ₆ of the open signal maintaining circuit 110, a ₆
Output becomes "H", and this "H" signal is applied to the differentiation circuit DI.
The signal is differentiated by F ₁₁ and input as a set signal to the flip-flop circuit FF, and an open signal is output from the flip-flop circuit FF. This open signal is output as an open signal from the third operation circuit 109, and the shelf at the right end in FIG. 10 moves to the right based on the open signal.

When the rightmost shelf starts moving as described above,
Before the limit switch Ls _{2 on the} central shelf is switched, the operation signal is output as an “H” signal, which is inverted to “L” by the inverter IN ₁₁ and all open signal maintaining circuits 11 are provided.
Added to 0. open signal maintenance circuit 110 corresponding to a _15.
Since the flip-flop circuit FF therein is already set as described above, there is no change even when the above-mentioned "L" operation signal is input. Furthermore, a _13, and the a ₆ of the opening signal maintaining circuit 110 corresponding to a ₁₄ met for operation signal of "L" is applied, even if a _13, open signal is the output of a ₁₄ is "H" However, the output of a ₆ is "L" and the flip-flop circuit F
F is not set and no open signal is output from its terminal Q. Therefore, only the rightmost shelf in FIG. 10 moves to the right.

When the transfer margin of the rightmost shelf disappears, the limit switch Ls ₃ is activated to stop the power supply to the drive motor of the shelf and stop the movement of the shelf. By the operation of the limit switch Ls ₃ , the reset signal is applied to the flip-flop circuit FF in the open signal maintaining circuit 110, and the output of the open signal from the terminal Q thereof is stopped. Also, when the power supply to the drive motors on the shelves is stopped, the operation signal is "L".
Which is inverted to “H” by the inverter IN ₁₁ and added to a ₆ of each open signal maintaining circuit 110. here,
Since it is detected that the limit switch Ls ₂ has a transfer margin by the above-described movement of the shelf, the open circuit 105
"H" as an open signal from a ₁₄ together with the open signal from
A signal is output and the open signal maintaining circuit 110 corresponding to a ₁₄ is output.
Then, the output of a ₆ becomes "H", the terminal Q of the flip-flop circuit FF becomes "H", and the open signal is output. This open signal moves the middle shelf in FIG. 10 to the right. It is the same as the above case that other shelves cannot be moved during this moving operation. Then, when the passage of the middle shelf is completed and the passage 1 is formed, the flip-flop circuits FF in the open signal maintaining circuits 110 corresponding to all the shelves are in the reset state, and all the operations are stopped, A passage will be formed as originally specified.

After completion of the passage forming operation, if another person can freely form the passage at a different position while working in the formed passage, the worker in the passage is at risk. Is. However, according to the above circuit example, if the passage forming operation is left as it is, the start signal is still output, and this is input to one input terminal of a _{12 by} the “H” signal. , A corresponding to each shelf
The outputs of ₁₃ , a ₁₄ and a ₁₅ are all "L", which is O
_11, since the O ₁₂ is inverted to "H" by the inverter IN ₁₂ then through the added to the other input terminal of a _12, the output becomes "H" in a _12, as this lock signal via the O ₁₃ Even if the designated switch is operated and the start switch is operated, the respective shelves are constrained so that they cannot be moved even if the start switch is operated, so that the safety in the formed passage is ensured.

When trying to form a passage at another position,
First, operate the release switch to start / release circuit 11
The output of 2 is set to "L", the output of the lock signal is stopped, and then the same operation as the above-described passage forming operation is performed.

The passages may be identified by alphabets or "a, b, c ..." Instead of numbers.

Also in the case of this embodiment, as in the case of the first embodiment, the work passage can be formed at the target position by the remote centralized operation by the transmitter, and the efficiency of the goods delivery work is improved. be able to. Further, according to the above-described embodiment, all the positions from the already-formed aisle position to the aisle position to be formed are designated in advance, and if the start operation is performed thereafter, the shelves are automatically moved one by one. Since the passage is formed at a desired position, there is an advantage that the operation is simple.

[0036]

EFFECTS OF THE INVENTION According to the present invention, a designation switch provided on the transmitter corresponding to each shelf to select a shelf for forming a passage by moving the shelf, and a reception switch for receiving a signal from the transmitter. Since a circuit and a discrimination circuit which is provided corresponding to each shelf and which discriminates and outputs a signal for driving the shelf according to the selection signal from the designated switch received by the receiving circuit are provided, transmission A working passage can be formed at a desired position by remote centralized operation by a machine. Therefore, for example, a work passage can be formed at a target position by a concentrated operation of one movable rack operator, and a cashier can carry out the receipt and delivery work of the articles in the formed work passage, or It is possible to perform remote control from the top of the article transport vehicle to form a work passage, and move the article transport vehicle to the formed work passage to carry out cashier work on the article transport vehicle, thereby improving work efficiency. Can be improved. In addition, if the person or the like to the passage you out,
This is detected by the foreign matter detection means and is detected in the formed passage.
When the foreign matter detection means detects that a human or the like has entered, this detection
A lock signal is output from the lock signal output circuit by an intelligent signal, interlock is applied, and the shelf is immovably restrained, so that the safety of workers in the aisle is ensured.
In particular, in the case where the mobile rack is operated wirelessly as in the present invention, the operator may try to move the mobile rack without knowing that the worker is in the passage. As described above, when a person or the like enters the passage, the shelves are constrained to be immovable, so that the effect can be further enhanced in terms of ensuring safety in the mobile shelving apparatus operated wirelessly.

[Brief description of drawings]

FIG. 1 is a side view showing the outer appearance of an embodiment of a movable shelf device according to the present invention.

FIG. 2 is an external front view showing an example of a transmission device used in the device of the present invention.

FIG. 3 is a block diagram showing an example of an electric circuit used in the device of the present invention.

FIG. 4 is a block diagram showing in more detail the signal discrimination circuit portion in the electric circuit.

FIG. 5 is a circuit diagram showing a specific example of a remote / manual switching circuit in the above determination circuit.

FIG. 6 is a road diagram showing a specific example of an open / release determination circuit in the signal determination circuit.

FIG. 7 is a circuit diagram showing a specific example of a right / left row switching circuit in the signal discrimination circuit.

FIG. 8 is a circuit diagram showing a specific example of an operation circuit in the signal determination circuit.

FIG. 9 is a block diagram showing another example of an electric circuit used in the device of the present invention.

FIG. 10 is a side view showing another example of the external appearance of the device of the present invention.

11 is a circuit diagram showing a specific example of an open signal maintaining circuit in the circuit of FIG.

[Explanation of reference symbols] 1 shelf 24 transmitter 27 designated switch 107 receiving circuit 110 discriminating circuit

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-59-64403 (JP, A) JP-A-59-65374 (JP, A) JP-A-59-103615 (JP, A) JP-A-59- 125516 (JP, A) JP 59-163204 (JP, A) Actually opened 57-178542 (JP, U) Actually opened 59-125244 (JP, U) JP 62-26762 (JP, B2)

Claims (3)

(57) [Claims] 1. A mobile shelf device in which a plurality of shelves are arranged so as to be movable, and a radio transmitter and a shelf which is provided in the transmitter corresponding to each shelf and which is to be moved to form a passage are selected. A designated switch, a receiving circuit for receiving a signal from the transmitter, and a discriminating circuit for discriminating and outputting a signal for driving the shelf according to the selection signal from the designated switch received by the receiving circuit. Foreign object detection to detect the entry and exit of humans etc. into the formed passage
The above-mentioned foreign matter detection means
Lock signal that locks the shelf immovable when the means detects
And a lock signal output circuit for outputting the moving shelf device. 2. The mobile shelf device according to claim 1, wherein the transmitter and the receiver circuit transmit and receive signals by radio waves. 3. The movable shelf device according to claim 1, wherein the foreign matter detecting means is an optical detecting means.