JPH0464503A - Controller for movable rack device - Google Patents

Abstract

PURPOSE:To improve both the safety and efficiency of work by starting a laterally movable rack, and exercising an interlock resetting control in the same manner as is observed when the switch for starting of the rack or for the interlock resetting control is operated, when a signal from a radio transmitter is received by a radio receiver. CONSTITUTION:When a push button switch 17 of an operation panel 9b corresponding to a work passage which is to be opened, e.g. a work passage B, is operated, a control circuit 24 of a controller 8 for a laterally movable rack 3 is put in operation. Thus, a motor 6 is started via a motor controller 23, and a driving wheel 7 is driven/rotated in the prescribed direction, so that the rack 3 is moved laterally in the direction of a fixed rack 1. When the rack 1 reaches a lateral travel limit, it is automatically stopped, receiving a lateral travel limit reaching 1 signal 25. As a result, a passage B is formed between the rack 3 and the rack 4. Similarly, when a push button switch 17 of an operation panel 9C is operated in order to open a work passage C, motors 6 for racks 3,4 are started, and both racks 3,4 move laterally in the direction of the rack 1, thereby forming a passage C between the rack 4 and the rack 2.

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention has three or more racks arranged side by side, and a rack located in the middle is configured to be movable laterally in the direction in which the racks are arranged side by side. The present invention relates to a control device for mobile rack equipment that is capable of forming working passages between racks.

(Prior art and its problems) In this type of mobile rack equipment, an operation switch for starting and resetting the interlock is provided on the side of each horizontal moving rack, and the closed work passage is When opening, make sure that there are no obstacles in the already open work path, and then operate the interlock reset operation switch corresponding to this open work path to enable the activation of the lateral movement rank. After that, by operating the starting operation switch corresponding to the work passage that is about to be opened, the lateral movement rack adjacent to the work passage moves laterally, and the work passage adjacent to the lateral movement rack is opened.

In this way, in mobile rack equipment, when opening a closed work passage, it is necessary to operate the interlock reset operation switch corresponding to the work passage that is already open, and the activation switch corresponding to the work passage that is about to be opened. In conventional mobile rack equipment, these operation switches for starting and resetting interlocks were only installed on the side of the horizontal moving rack, so it is not necessary for the operator to operate the operation switches sequentially. If you are riding a forklift for loading and unloading work for each rank, bring the forklift close to the switch you want to operate and operate the switch from the top of the forklift, or get off the forklift and operate the switch. Therefore, the work could not be carried out safely and efficiently.

(Means for Solving the Problems) In order to solve the above-mentioned conventional problems, the present invention has the following features:
A starting and interlock reset operation switch and a wireless receiver are arranged on the side of the horizontal moving rack, and a worker or hand-held device is used to send a starting and interlock reset signal to the wireless receiver. A wireless transmitter is provided, and when receiving a wireless signal from the wireless receiver or the wireless transmitter, performs the same lateral movement rack activation and interlock reset control as when the activation and interlock reset operation switch is operated. The present invention proposes a control device for mobile rack equipment configured to perform the following operations.

(Example) An example of the present invention will be described below based on the attached illustrative drawings.

In FIG. 1, 1.2 is a fixed rack, and 3.4 is a lateral movable rack disposed between both fixed racks 1 and 2. Each of the lateral movement racks 3 and 4 is supported on a guide rail 5 so as to be able to move laterally in the direction in which the racks are arranged side by side, and each includes a drive wheel 7, a controller 8, and a controller 8, each of which is rotatably driven by a motor 6 in any forward or reverse direction.
and operation panels 9a to 9c. Operation panel 9
A corresponds to the working passage between the fixed rack 1 and the horizontal moving rack 3, and is attached to the working passage A side on the end face of the horizontal moving rack 3, and the operation panel 9b corresponds to the working passage between the fixed rack 1 and the horizontal moving rack 3. A device corresponding to the working passage B is attached to the end face of the horizontal movement rack 3 on the working passage B side. Further, the operation panel 9c corresponds to the working passage C between the lateral moving rack 4 and the fixed rack 2, and is attached to the end face of the lateral moving rack 4 on the working passage C side.

IO is a wireless transmitter for hand-held operation by a worker, and as shown in FIGS. 2 and 3, a light emitting element 12 such as an infrared light emitting diode is attached to the tip of a small flashlight-shaped case 11. , a push button switch 13 and a transmission indicator light 14 are attached to the peripheral surface near the tip, and a DC power supply 15 using a dry battery such as a lithium battery inside, and the DC power supply 1
A light emitting element drive circuit 16 driven by a light emitting element drive circuit 5 is provided inside.

As shown in FIG. 3, each of the operation panels 9a to 9c is equipped with a push button switch 17 for starting and interlock reset, an emergency stop switch 8, and a light receiving element 2o of a wireless receiver I9. . This wireless receiver】9
By detecting an infrared signal from the light emitting element 12 in the wireless transmitter 10 with the light receiving element 20, a drive signal +9a is given to the relay drive circuit 21, and the relay given the drive signal 19a The drive circuit 21 is
The push-button switch 7 is connected in parallel to the start-up and interlock reset button 7 to excite and close the re-switch 22.

The controller 8 of each lateral movement rack 3.4 includes a motor controller 23 such as an inverter installed in the power supply circuit of the motor 6, and
3, and the control circuit 24 generates a start and interlock reset signal from the push button switch 7, an emergency stop signal from the emergency stop switch 18, or a horizontal travel limit arrival signal. The motor controller 23 is controlled in a conventionally known manner based on activation and interlock signals 26 and the like from the transverse rack 25 and other transverse racks.

In FIG. 1, a working passage between the fixed rack 1 and the transverse rack 3 is opened. In this state, each horizontal movement rack 3
, 4 has an interlock in the control circuit 24 in the controller 8, and the closed work passage B or C
Even if the push button switch 17 of the operation panel 9b or 9C is operated in order to open the lateral movement rack 3.4, the lateral movement rack 3.4 cannot be activated. That is, when opening the closed working path B or C, first confirm that there are no obstacles in the open working path A, and then open the operation panel 9a corresponding to the working path A.
The interlock working on the # control circuit 24 in the controller 8 of the lateral movement rack 3.4 must be released by operating the push button switch 17. If you operate the push button switch 17 on the operation panel 9b corresponding to the work passage you want to open next, for example work passage B, the horizontal movement rack 3
The control circuit 24 in the controller 8 operates, the motor 6 is activated via the motor controller 23, and the drive wheels 7 are driven to rotate in a predetermined direction.
or move laterally in the direction of the fixed rack 1. When the horizontal stroke limit is reached, it automatically stops upon receiving the horizontal stroke limit arrival signal 25, and a working path B is formed between the horizontal movement racks 3 and 4.

When the push button switch 17 of the operation panel 9C is operated to open the work passage C, the motor 6 of the lateral movement rack 3.4 is activated, and the lateral movement is performed in the direction of both lateral movement racks 3, 4 or the fixed rack 1. As a result, a working passage C is formed between the horizontal movable rack 4 and the fixed rack 2.

When the working path B or C is opened as described above, the control circuit 24 in the controller 8 of each lateral movement rack 3, 4 is interlocked again, and the operation panel 9b corresponding to the opened working path B or C is activated. Alternatively, another working passage A-C cannot be opened unless the interlock is released by operating the push button switch 17 of 9C.

If you want to make an emergency stop of the lateral moving racks 3 and 4 that are moving laterally, press the emergency stop switch 18 on the operation panel 9a to 9c corresponding to the work passage that is about to open, that is, operate the emergency stop switch 18 to open a specific work passage. What is necessary is to operate the emergency stop switch 18 installed in parallel with the push button switch 17.

As described above, the operation panels 9a to 9 of each horizontal movement rack 3.4
Instead of operating the push button switch 17 to activate or reset the interlock in step c, for example, the light emitting element 12 operates the push button switch 13 of the wireless transmitter 10 in the hands of a worker driving a forklift. 9a~
Light receiving element 20 in the operation panel to be operated in 9C
It is possible to operate the wireless transmitter 10 with the direction determined so as to face the user. In this way, the wireless transmitter 10
When the push button switch 13 is operated, the light emitting element 12 is driven by the light emitting element drive circuit 16 to project an infrared signal, and the transmission indicator light 14 is turned on. Therefore, the infrared signal from the light emitting element 12 is detected by the light receiving element 20 in the operation panel to be operated among the operation panels 9a to 9C, and the wireless receiver 19 equipped with the light receiving element 20 is detected.
A drive signal 19a is output from the relay drive circuit 21,
Since the relay 22 is energized and closed, it will be in the same state as when the push button switch 17 on the operation panel to be operated is operated, and the interlock will be released and the lateral movement rack 3 will open the desired work path. Alternatively, the activation of step 4 can be performed by wireless remote control.

In the above embodiment, the first operation of the push button switch 17 is a starting operation, and the second operation is an interlock release operation. It is also possible to provide a separate interlock reset switch.

(Operations and Effects of the Invention) As described above, according to the control device for mobile rack equipment of the present invention, the starting and interlock reset operation switches attached to the side of the horizontal moving rack can be directly operated manually. Of course, it is possible to release the interlock and activate the target horizontal moving rack as before, but you can also operate the wireless transmitter you have at any location away from the horizontal moving rack to perform the above operation. It is also possible to release the interlock and activate the desired horizontal movement rack.

Therefore, by carrying the wireless transmitter, a worker who operates a forklift to pass through the working path formed between the racks and carry out loading/unloading work of cargo can use the operating panel of the horizontal moving rack as in the past. There is no need for the forklift to be brought close to the side, or for each worker to get off the forklift and go to the side of the lateral movement rack to perform the operation. Interlocks can be released and the desired lateral movement rack can be activated remotely from the top of the forklift. This not only greatly improves work efficiency, but also improves work safety.

[Brief explanation of the drawing]

FIG. 1 is a schematic plan view illustrating the configuration of mobile rack equipment;
FIG. 2 is a side view of the wireless transmitter, and FIG. 3 is a block diagram illustrating the configuration of the wireless transmitter, the wireless receiver, and their peripheral control devices. 1.2... Fixed rack, 3.4... Lateral moving rack, 6
... Motor, 7... Drive wheel, 8... Controller, 9a to 9c... Operation panel, IO... Wireless transmitter, 12... Light emitting element, Engineering 3... Push button switch, 16...Light emitting element drive circuit,) 7...Push button switch for starting and interlock reset, 18...Emergency stop switch, 19...Radio receiver, 2o...Light receiving element, 21... Relay drive circuit, 22... relay,
23...Motor controller,

Claims (1)

[Claims] In mobile rack equipment in which three or more racks are arranged side by side and the rack located in the middle is configured to be movable laterally in the direction in which the racks are arranged side by side, so that a work passage can be formed between arbitrary racks. , an operation switch for starting and interlock reset and a wireless receiver are arranged on the side of the horizontal moving rack, and the operator can hand-hold it to send a starting and interlock reset signal to the wireless receiver. a wireless transmitter, and when the wireless receiver receives a wireless signal from the wireless transmitter, the same lateral movement rack activation and interlock reset control as when the activation and interlock reset operation switch is operated. A control device for mobile rack equipment configured to perform