JP5948752B2 - Traveling car - Google Patents

Description

  The present invention relates to a traveling vehicle that transports luggage, and particularly to a traveling vehicle that can be controlled from each of a plurality of controllers.

  2. Description of the Related Art Conventionally, there is an automatic warehouse that includes a rack that can store a plurality of luggage and a traveling vehicle that transports the luggage and takes in and out the luggage rack. An example of such a traveling vehicle is a stacker crane.

  The stacker crane can be controlled from both the ground operation panel (ground controller) fixed at a predetermined position in the automatic warehouse and the operation terminal (manual controller) connected to the control panel on the cart of the stacker crane. It is.

  In the control of such a stacker crane, an interlock is employed so that the control from only one of the ground controller and the manual controller is effective from the viewpoint of safety.

  Specifically, the ground controller has a changeover switch for switching from one of the ground controller and the manual controller ("ground" and "airframe") to the other. The control panel arranged in the stacker crane has a key switch for enabling the manual controller. Further, the key of the changeover switch of the ground controller and the key of the key switch of the stacker crane are shared.

  In addition, when a key is inserted into the changeover switch of the ground controller and “Ground” is selected, the key cannot be removed from the changeover switch. When “Airframe” is selected, the key is removed from the changeover switch. Can be extracted.

  That is, by switching the changeover switch of the ground controller from “ground” to “airframe”, the key can be extracted from the changeover switch, and the manual controller can be validated.

  A technique for ensuring the safety of a stacker crane that can be controlled from each of the two controllers is also disclosed (for example, see Patent Document 1).

JP-A-6-24529

  Here, as in the case of the conventional automatic warehouse described above, the ground controller and manual controller are, in principle, mutually exclusive by sharing the key of the changeover switch of the ground controller and the key for enabling the manual controller. Relationship. That is, both the ground controller and the manual controller are not effective for controlling the stacker crane.

  However, such an important key is generally provided with a spare key in preparation for loss or damage.

  Therefore, there is a possibility that a state where both the ground controller and the manual controller are effective may occur.

  For example, using the main key, set the selector switch of the ground controller to the state where “airframe” is selected, remove the key from the selector switch, insert it into the key switch of the stacker crane, and turn it to enable the manual controller. Assume a case.

  In this case, both the ground controller and the manual controller are enabled for the stacker crane by switching the switch of the ground controller from “airframe” to “ground” using a spare key.

  Of course, in preparation for such a case, for example, it is generally performed to interlock the ground controller and the manual controller by software.

  However, when software interlock is employed, for example, when there is a possibility of malfunction due to an unexpected bug, further measures have been taken to prevent malfunction.

  An object of the present invention is to provide a traveling vehicle that is controllable from each of a plurality of controllers and has improved safety, in consideration of the above-described conventional problems.

  In order to achieve the above object, a traveling vehicle according to an aspect of the present invention is a traveling vehicle that can operate according to instruction signals from each of a first controller and a second controller, and from the first controller, A receiver that receives an instruction signal, a mechanical switch that allows the vehicle to operate in accordance with the instruction signal from the second controller by performing a predetermined operation, and the predetermined operation In response to a mechanical change of the mechanical switch in the event of a failure, a cutoff mechanism unit that mechanically cuts off reception of an instruction signal from the first controller by the receiver.

  According to this configuration, when the second controller is enabled in the control of the traveling vehicle by a predetermined operation on the mechanical switch, the instruction signal transmitted from the first controller is mechanically cut off. In other words, the instruction signal is blocked using a change in physical structure without depending on software.

  That is, during the period in which the second controller is valid, it is possible to reliably prevent the traveling vehicle from receiving the instruction signal from the first controller.

  For example, when the operator controls the traveling vehicle with the second controller, which is a manual controller, the automatic operation of the traveling vehicle by the first controller on the ground side is reliably prevented.

  Therefore, the traveling vehicle of this aspect is a traveling vehicle which can be controlled from each of a plurality of controllers, and is a traveling vehicle with improved safety.

  Further, in the traveling vehicle according to one aspect of the present invention, the mechanical switch includes a cylinder, and the predetermined operation is performed by inserting a key into the cylinder and rotating the cylinder. The traveling vehicle is brought into a state in which an operation according to an instruction signal from the second controller is possible, and the shut-off mechanism unit is configured to cause an instruction signal from the first controller by the receiver when the cylinder rotates. The key is a changeover switch of the first controller, and (a) a state in which the traveling vehicle can be operated according to an instruction signal from the first controller, And (b) a key for operating a changeover switch for switching from one of the states in which the operation according to the instruction signal from the second controller is possible to the other; It may be used also.

  According to this configuration, interlock is realized by sharing the keys of the two controllers, and the instruction signal from the first controller is mechanically received by the receiver by a general operation on the key switch. It can be impossible. That is, it is possible to realize a traveling vehicle having a simple configuration and further improved safety.

  Further, in the traveling vehicle according to one aspect of the present invention, the blocking mechanism unit receives the instruction signal from the first controller by the receiver by mechanically blocking power supply to the receiver. May be mechanically shut off.

  Further, in the traveling vehicle according to one aspect of the present invention, the blocking mechanism unit mechanically blocks a transmission path of an instruction signal from the first controller to the receiver, thereby the first by the receiver. The reception of the instruction signal from the controller may be mechanically interrupted.

  Further, in the traveling vehicle according to the aspect of the present invention, the receiver receives an instruction signal transmitted from the first controller via the transmission path by radio, and the blocking mechanism unit includes the mechanical switch. The transmission path may be blocked by a shielding member that moves or rotates in conjunction with the mechanical change.

  Further, in the traveling vehicle according to the aspect of the present invention, the receiver receives an instruction signal transmitted from the first controller via the transmission path by radio, and the blocking mechanism unit includes the mechanical switch. The transmission path may be blocked by moving or rotating the receiver in conjunction with the mechanical change.

  As described above, various methods can be adopted as a method for mechanically blocking the reception of the instruction signal from the first controller by the receiver. Therefore, for example, an optimum method can be adopted according to the configuration of the traveling vehicle and the working environment of the traveling vehicle.

  The present invention can also be implemented as a traveling vehicle control method including characteristic processing executed by the traveling vehicle according to any one of the above aspects. Further, the present invention can be realized as a program for causing a computer to execute each process included in the traveling vehicle control method, and as a recording medium on which the program is recorded. The program can be distributed via a transmission medium such as the Internet or a recording medium such as a DVD.

  ADVANTAGE OF THE INVENTION According to this invention, it is a traveling vehicle which can be controlled from each of a some controller, Comprising: The traveling vehicle which improved safety | security can be provided.

FIG. 1 is a perspective view showing a configuration outline of an automatic warehouse in the embodiment. FIG. 2 is a schematic diagram illustrating a control system for the stacker crane of the embodiment. FIG. 3 is a diagram illustrating a configuration for mechanically blocking an instruction signal included in the stacker crane according to the embodiment. FIG. 4 is a schematic diagram illustrating a first example of a mechanism for mechanically blocking an instruction signal in the blocking mechanism unit of the embodiment. FIG. 5 is a schematic diagram illustrating a second example of a mechanism for mechanically blocking an instruction signal in the blocking mechanism unit of the embodiment. FIG. 6 is a schematic diagram illustrating a third example of a mechanism for mechanically blocking an instruction signal in the blocking mechanism unit of the embodiment.

  An automatic warehouse according to an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a perspective view showing a configuration outline of an automatic warehouse 10 according to the embodiment.

  As shown in FIG. 1, the automatic warehouse 10 according to the embodiment includes a stacker crane 12, a rack 50, and a ground controller 100.

  The stacker crane 12 is an example of a traveling vehicle, and includes a lifting platform 15, a transfer device 20, and an operation control unit 150. In the present embodiment, the manual controller 140 is wired to the operation control unit 150. Note that the operation control unit 150 and the manual controller 140 may be wirelessly connected.

  The ground controller 100 is an example of a first controller, and the manual controller 140 is an example of a second controller.

  The stacker crane 12 operates, for example, according to an instruction from the ground controller 100 to automatically store each of the plurality of packages in the rack 50 and automatically unload each of the stored packages from the rack 50. To do.

  Specifically, the stacker crane 12 moves on the traveling rail 16 and raises and lowers the lifting platform 15 provided with the transfer device 20. In addition, the transfer device 20 moves the fork in and out of an arbitrary shelf of the rack 50. Thereby, a load can be transferred between the rack 50 and the transfer device 20.

  In addition, the transfer device 20 can also transfer the package to and from the station 55, which is a temporary mounting place when the package is loaded and unloaded. Thereby, for example, the stacker crane 12 can place the load taken from the rack 50 on the station 55 and can place the load taken from the station 55 on the rack 50.

  Further, the stacker crane 12 can execute the above-described various operations in accordance with instructions from the manual controller 140, for example.

  That is, the stacker crane 12 can be controlled from each of the ground controller 100 and the manual controller 140.

  Therefore, for example, from the viewpoint of ensuring safety, exclusive switching of these controllers is necessary so that only one of the ground controller 100 and the manual controller 140 is effective for the control of the stacker crane 12.

  Therefore, the stacker crane 12 of the present embodiment has a configuration for reliably preventing control from the ground controller 100 when the manual controller 140 is effective.

  FIG. 2 is a schematic diagram illustrating a control system for the stacker crane 12 according to the embodiment.

  As shown in FIG. 2, the ground controller 100 has a changeover switch 110. The operator can switch from one of “ground” and “airframe” to the other by inserting the key 130 into the cylinder 112 of the changeover switch 110 and turning it.

  When the changeover switch 110 is in a state where “ground” is selected, an instruction signal from the ground controller 100 is transmitted to the stacker crane 12 via the transmitter 120.

  The instruction signal transmitted from the ground controller 100 is received by the receiver 152 included in the operation control unit 150 of the stacker crane 12. The stacker crane 12 operates in accordance with instructions (such as a movement instruction in the X-axis direction and a load transfer instruction) indicated in the received instruction signal.

  Note that each of the transmitter 120 and the receiver 152 is realized by, for example, an optical transmission device. Moreover, there is no limitation in particular about the transmission medium for communication between the transmitter 120 and the receiver 152, An instruction | indication signal may be transmitted by an electromagnetic wave and an instruction | indication signal may be transmitted by wired communication.

  Further, the operation control unit 150 of the stacker crane 12 has a key switch 154. The key switch 154 is an example of a mechanical switch that causes the stacker crane 12 to be operable in accordance with an instruction signal from the manual controller 140.

  In short, the manual controller 140 is switched between “ON” and “OFF” by operating the key switch 154.

  Specifically, the operator inserts the key 130, which is also used for the operation of the changeover switch 110 of the ground controller 100, into the key switch 154 and turns it in the "ON" direction. As a result, the stacker crane 12 is in a state in which the operation according to the instruction signal from the manual controller 140 is possible.

  Note that the key 130 cannot be removed from the changeover switch 110 when the changeover switch 110 of the ground controller 100 is set to “ground”, and is changed only when the changeover switch 110 is set to “airframe”. It can be removed from the switch 110.

  That is, in principle, the operator uses the key 130 for the manual controller only when the changeover switch 110 is set to “airframe”, that is, when the ground controller 100 cannot control the stacker crane 12. 140 can be valid.

  That is, interlocking is achieved by making the key 130 used for the operations of the ground controller 100 and the manual controller 140 common.

  Here, as described above, the existence of the same key (reserved key) as the key 130 is unavoidable in reality, and it is difficult to completely eliminate the possibility of malfunction in software-based interlocking. It is.

  Therefore, the stacker crane 12 of the present embodiment has a blocking mechanism that mechanically blocks the instruction signal from the ground controller 100 when the manual controller 140 is enabled.

  FIG. 3 is a diagram illustrating a configuration for mechanically blocking the instruction signal provided in the stacker crane 12 according to the embodiment.

  As shown in FIG. 3, the operation control unit 150 of the stacker crane 12 includes a blocking mechanism unit 156 in addition to the key switch 154 and the receiver 152.

  The blocking mechanism unit 156 mechanically blocks the reception of the instruction signal from the ground controller 100 by the receiver 152 in conjunction with the mechanical change of the key switch 154 when a predetermined operation is performed on the key switch 154. .

  In other words, the blocking mechanism unit 156 blocks the reception of the instruction signal from the ground controller 100 by the receiver 152 without depending on the software.

  Specifically, the operator inserts the key 130 into the cylinder 155 of the key switch 154 and switches from “OFF” to “ON”. As a result, the stacker crane 12 is in a state where it can operate according to the instruction signal from the manual controller 140. That is, the manual controller 140 is enabled.

  In addition, the blocking mechanism unit 156 receives the instruction signal from the ground controller 100 by the receiver 152 in conjunction with the mechanical change of the key switch 154 at this time, that is, in this embodiment, in conjunction with the rotation of the cylinder 155. Shut off mechanically.

  Hereinafter, various examples of a mechanism for mechanically blocking the instruction signal by the blocking mechanism unit 156 will be described.

  FIG. 4 is a schematic diagram illustrating a first example of a mechanism for mechanically blocking the instruction signal in the blocking mechanism unit 156 according to the embodiment.

  As shown in FIG. 4, the blocking mechanism unit 156 includes a relay 157 disposed between the power source and the receiver 152.

  As shown in FIG. 4A, when the key switch 154 is “OFF”, the switch of the relay 157 is connected to the terminal in conjunction with the rotation of the cylinder 155, so that the relay 157 becomes conductive. As a result, power necessary for operation is supplied to the receiver 152.

  That is, when the key switch 154 is “OFF”, the manual controller 140 is not effective. That is, since the stacker crane 12 has no problem in operating in accordance with the instruction signal from the ground controller 100, the blocking mechanism unit 156 does not block reception of the instruction signal from the ground controller 100 by the receiver 152.

  Further, as shown in FIG. 4B, when the key switch 154 is “ON”, the relay 157 is disconnected from the terminal in conjunction with the rotation of the cylinder 155, so that the relay 157 is turned off. . Thereby, the supply of power to the receiver 152 is stopped. That is, the receiver 152 cannot receive the instruction signal.

  As described above, the blocking mechanism unit 156 mechanically receives the instruction signal from the ground controller 100 by the receiver 152 using the relay 157 that opens and closes the switch in conjunction with the mechanical change of the key switch 154. Can be blocked.

  The blocking mechanism unit 156 can also mechanically block the reception of the instruction signal by the receiver 152 by mechanically blocking the transmission path of the instruction signal from the ground controller 100 to the receiver 152.

  FIG. 5 is a diagram illustrating a second example of a mechanism for mechanically blocking an instruction signal in the blocking mechanism unit 156 according to the embodiment.

  As shown in FIG. 5, the blocking mechanism 156 includes a shielding member 158 and a connecting member 159. The shielding member 158 is a member that can shield an instruction signal from the ground controller 100. When the instruction signal is transmitted by light, the shielding member 158 is made of, for example, a metal or resin that does not transmit light.

  Further, the shielding member 158 is connected to the peripheral edge of the cylinder 155 by a connecting member 159, for example, and moves in conjunction with the rotation of the cylinder 155. The connecting member 159 is, for example, a metal or resin wire.

  In the blocking mechanism section 156 having such a configuration, as shown in FIG. 5A, when the key switch 154 is “OFF”, the shielding member 158 is present at a position where it does not interfere with the instruction signal from the ground controller 100. To do. Thereby, the receiver 152 can receive the instruction signal from the ground controller 100.

  Further, as shown in FIG. 5B, when the key switch 154 is “ON”, the shielding member 158 is a position in front of the signal receiving unit of the receiver 152, and is an instruction signal from the ground controller 100. Move to a position where it is shielded.

  That is, the transmission path of the instruction signal from the ground controller 100 to the receiver 152 is mechanically interrupted. As a result, the receiver 152 cannot receive the instruction signal from the ground controller 100.

  As described above, the blocking mechanism unit 156 mechanically blocks the reception of the instruction signal from the ground controller 100 by the receiver 152 using the shielding member 158 that moves in conjunction with the mechanical change of the key switch 154. can do.

  A similar effect can also be obtained by rotating the shielding member 158 in conjunction with the mechanical change of the key switch 154.

  FIG. 6 is a diagram illustrating a third example of a mechanism for mechanically blocking an instruction signal in the blocking mechanism unit 156 according to the embodiment.

  As shown in FIG. 6, the blocking mechanism unit 156 includes a connecting member 160 that connects the key switch 154 and the receiver 152. The connecting member 160 is, for example, a metal or resin wire.

  Further, for example, the peripheral portion of the cylinder 155 and the end portion of the receiver 152 are connected by the connecting member 160. Furthermore, the end of the receiver 152 opposite to the connecting member 160 is pivotally supported so that the receiver 152 can rotate.

  In the blocking mechanism unit 156 having such a configuration, as shown in FIG. 6A, when the key switch 154 is “OFF”, the receiver 152 has an angle at which the instruction signal from the ground controller 100 can be received. Retained. Thereby, the receiver 152 can receive the instruction signal from the ground controller 100.

  Further, as shown in FIG. 6B, when the key switch 154 is “ON”, the receiver 152 is directed in the direction in which the instruction signal from the ground controller 100 cannot be received.

  That is, the transmission path of the instruction signal from the ground controller 100 to the receiver 152 is mechanically interrupted. As a result, the receiver 152 cannot receive the instruction signal from the ground controller 100.

  Such a mechanism is employed, for example, when the directivity of a transmission medium used for transmitting an instruction signal such as optical wireless is high.

  In this way, the blocking mechanism unit 156 mechanically blocks the reception of the instruction signal from the ground controller 100 by the receiver 152 by rotating the receiver 152 in conjunction with the mechanical change of the key switch 154. can do.

  A similar effect can be obtained by moving the receiver 152 in conjunction with the mechanical change of the key switch 154.

  The various mechanisms for mechanically blocking the reception of the instruction signal that can be employed by the blocking mechanism unit 156 have been described above with reference to FIGS.

  As described above, when the key switch 154 is “ON”, that is, when the manual controller 140 is valid, the blocking mechanism unit 156 mechanically blocks the reception of the instruction signal from the ground controller 100 by the receiver 152. .

  As a result, even if the changeover switch 110 of the ground controller 100 is switched to “ground” with the spare key, and as a result, any instruction signal is transmitted from the ground controller 100, the stacker crane 12 is informed of the instruction signal. Can not receive. This prevents the stacker crane 12 from being controlled from both the ground controller 100 and the manual controller 140 at the same time.

  Note that the various mechanisms shown in FIGS. 4 to 6 are merely examples, and the blocking mechanism unit 156 may implement mechanical blocking of reception of the instruction signal by the receiver 152 using other mechanisms. it can.

  For example, the connection member 159 as shown in FIG. 5 may be used to physically separate and reconnect the connection portion of the power supply line to the receiver 152.

  Moreover, the case where the ground controller 100 and the stacker crane 12 perform wired communication via a communication cable is assumed.

  In this case, the blocking mechanism unit 156 may use the connecting member 159 to separate and reconnect the connection portion of the communication cable in conjunction with the mechanical change of the key switch 154, for example. That is, the blocking mechanism unit 156 may mechanically block the instruction signal transmission path formed by the communication cable.

  Moreover, the movement or rotation of the shielding member 158 and the receiver 152 as shown in FIGS. 5 and 6 may be realized by a driving force of a motor, for example.

  For example, when the key switch 154 is “OFF” by applying an urging force by a spring to the shielding member 158, the shielding member 158 does not interfere with the instruction signal from the ground controller 100 (FIG. 5A). See).

  Further, when the key switch 154 is turned “ON”, the motor switch is turned “ON” by the connecting member 159 connected to the cylinder 155 of the key switch 154. Thereby, the shielding member 158 is pulled out to the position shown in FIG. As a result, the instruction signal cannot be received by the receiver 152. After that, when the key switch 154 is turned “OFF”, the switch of the motor is turned “OFF” by the connecting member 159. As a result, the shielding member 158 is moved to the position shown in FIG. Return.

  Also by such a mechanism, it is possible to realize mechanical interruption of reception of the instruction signal by the receiver 152.

  For example, the connecting members 159 and 160 may not be a metal or resin wire. For example, the connecting member 159 may be realized by one or more gears or rollers, or may be realized by an arm and a pin constituting a link mechanism.

  That is, elements such as the shielding member 158 for mechanically blocking the reception of the instruction signal by the receiver 152 can be moved or rotated in conjunction with the mechanical change of the key switch 154. If there is, there is no limitation on the structure and material of the connecting member 159.

  Further, the connecting member 159 is not essential for the stacker crane 12. For example, the shielding member 158 may be directly connected to the cylinder 155 of the key switch 154. Even in this case, reception of the instruction signal by the receiver 152 in conjunction with a mechanical change of the key switch 154 can be blocked.

  As described above, according to the stacker crane 12 of the present embodiment, it can be controlled from each of the ground controller 100 and the manual controller 140. When controlled by the manual controller 140, reception of the instruction signal from the ground controller 100 is mechanically interrupted.

  In other words, the stacker crane 12 can block the reception of the instruction signal from the ground controller 100 without depending on the software during the period in which the manual controller 140 is valid.

  As a result, for example, when the operator controls the stacker crane 12 with the manual controller 140, the automatic operation of the stacker crane 12 by the ground controller 100 is reliably prevented.

  As described above, the stacker crane 12 according to the present embodiment is an example of a traveling vehicle that can be controlled from each of a plurality of controllers, and is an example of a traveling vehicle that is further improved in safety.

  The traveling vehicle of the present invention has been described based on the embodiments. However, the present invention is not limited to the above embodiment. Unless it deviates from the gist of the present invention, various modifications conceived by those skilled in the art have been made in the present embodiment, or forms constructed by combining a plurality of the above-described constituent elements are within the scope of the present invention. include.

  For example, the configuration shown in FIG. 5 and the configuration shown in FIG. 6 may be combined. For example, the shielding member 158 is fixed in the operation control unit 150, and the receiver 152 is moved in conjunction with the mechanical change of the key switch 154. That is, whether the instruction signal can be received by the receiver 152 is switched by moving the receiver 152 out of the shielding member 158.

  This also realizes mechanical interruption of reception of the instruction signal by the receiver 152.

  Further, the traveling vehicle that performs mechanical interruption of reception of the instruction signal from the ground controller 100 may be a traveling vehicle other than the stacker crane 12. For example, each of a plurality of transport vehicles that are arranged at a plurality of stages of the rack 50 and can travel independently from each other may have the blocking mechanism portion 156.

  Further, for example, an automatic guided vehicle that unmannedly travels on the floor of a warehouse may include the blocking mechanism 156.

  The mechanical switch of the stacker crane 12 may be of a type other than the key switch 154. For example, the blocking mechanism unit 156 may mechanically block the reception of the instruction signal from the ground controller 100 by the receiver 152 in conjunction with the mechanical change of the toggle switch (change in the angle of the lever).

  The traveling vehicle of the present invention is a traveling vehicle that can be controlled from each of a plurality of controllers, and has improved safety. Therefore, it is useful as a traveling vehicle or the like that transports luggage in factories and distribution warehouses.

DESCRIPTION OF SYMBOLS 10 Automatic warehouse 12 Stacker crane 15 Lifting stand 16 Travel rail 20 Transfer device 50 Rack 55 Station 100 Ground controller 110 Changeover switch 112, 155 Cylinder 120 Transmitter 130 Key 140 Manual controller 150 Operation control part 152 Receiver 154 Key switch 156 Shut off Mechanical part 157 Relay 158 Shielding member 159, 160 Connecting member

Claims (4)

A traveling vehicle that can operate in accordance with an instruction signal from each of a first controller having a fixed position and a movable second controller,
The first controller is fixed at a predetermined position other than the traveling vehicle,
The traveling vehicle is
A receiver for receiving an instruction signal from the first controller;
A mechanical switch that allows the vehicle to operate in accordance with an instruction signal from the second controller by performing a predetermined operation;
An interruption mechanism that mechanically interrupts reception of an instruction signal from the first controller by the receiver by mechanically interlocking with a mechanical change of the mechanical switch when the predetermined operation is performed. And
The mechanical switch includes a cylinder, and the predetermined operation is performed by inserting a key into the cylinder and rotating the cylinder so that the traveling vehicle is instructed from the second controller. According to the state that can be operated,
The blocking mechanism unit mechanically blocks the reception of the instruction signal from the first controller by the receiver by the rotation of the cylinder,
The key is a change-over switch of the first controller, and (a) the vehicle can operate in accordance with an instruction signal from the first controller, and (b) from the second controller. It is also used as a key for operating a changeover switch for switching from one state to the other in a state where operation according to the instruction signal is possible
Traveling car. The blocking mechanism portion, by mechanically cutting off the supply of power to the receiver, vehicle of claim 1 wherein the mechanically block the reception of the instruction signal from the first controller by the receiver . A traveling vehicle that can operate in accordance with an instruction signal from each of a first controller having a fixed position and a movable second controller,
The first controller is fixed at a predetermined position other than the traveling vehicle,
The traveling vehicle is
A receiver for receiving an instruction signal from the first controller;
A mechanical switch that allows the vehicle to operate in accordance with an instruction signal from the second controller by performing a predetermined operation;
An interruption mechanism that mechanically interrupts reception of an instruction signal from the first controller by the receiver by mechanically interlocking with a mechanical change of the mechanical switch when the predetermined operation is performed. And
The blocking mechanism unit mechanically blocks the reception of the instruction signal from the first controller by the receiver by mechanically blocking the transmission path of the instruction signal from the first controller to the receiver. ,
The receiver receives an instruction signal transmitted from the first controller via the wireless transmission path;
The blocking mechanism section blocks the transmission path by a shielding member that moves or rotates in conjunction with a mechanical change of the mechanical switch.
Traveling car. A traveling vehicle that can operate in accordance with an instruction signal from each of a first controller having a fixed position and a movable second controller,
The first controller is fixed at a predetermined position other than the traveling vehicle,
The traveling vehicle is
A receiver for receiving an instruction signal from the first controller;
A mechanical switch that allows the vehicle to operate in accordance with an instruction signal from the second controller by performing a predetermined operation;
An interruption mechanism that mechanically interrupts reception of an instruction signal from the first controller by the receiver by mechanically interlocking with a mechanical change of the mechanical switch when the predetermined operation is performed. And
The blocking mechanism unit mechanically blocks the reception of the instruction signal from the first controller by the receiver by mechanically blocking the transmission path of the instruction signal from the first controller to the receiver. ,
The receiver receives an instruction signal transmitted from the first controller via the wireless transmission path;
The blocking mechanism section blocks the transmission path by moving or rotating the receiver in conjunction with a mechanical change of the mechanical switch.
Traveling car.

Images