JP3367542B2 - Moving rack equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention has a fixed rack erected at both ends and a plurality of movable racks arranged side by side between the fixed racks. The present invention relates to a moving rack device in which a work passage is formed between arbitrary adjacent racks.

[0002]

2. Description of the Related Art Each rack in a moving rack apparatus of this type has a form in which it is easy to fall in the moving direction of the moving rack. Therefore, if the moving rack is configured so that it will not be braked when it stops, or if it is configured to automatically release the braking when an earthquake occurs, when the moving rack is shaken in the moving direction of the moving rack, Since it moves with the shaking of the earthquake, the risk of tipping is almost eliminated, but the fixed rack that is independent by itself because the working passage is formed between the adjacent moving racks,
There is a great risk of falling.

In view of the above conventional problems, the present invention effectively prevents the fixed rack from easily falling due to an earthquake or the like when the power switch is turned off to suspend the moving rack device. An object of the present invention is to provide a moving rack device that can be automatically switched to a possible state.

[0004]

The movable rack apparatus of the present invention for achieving the above object is shown by the reference numerals of the embodiments described later, and fixed racks 1 and 2 installed upright at both ends.
A plurality of movable racks 3 and 4 arranged side by side between the fixed racks 1 and 2, a movable rack drive means 19, a power switch 25 of the movable rack drive means 19, a control means 17, 23, which is configured to form working paths A to C between arbitrary racks adjacent to each other by lateral movement of the movable racks 3 and 4, and the control means 1
When the power switch 25 is turned off, the reference numerals 7 and 23 give the moving rack drive means 19 an inter-moving rack passage forming command 20b for moving the moving racks 3 and 4 to the inside of the fixed racks 1 and 2, and the command is given. After the passage B between the moving racks based on 20b is formed, the moving rack driving means 19 is powered off.

The moving rack device includes worker passage detecting means 7-9 at the entrance of the inter-rack passage, an interlock circuit 16 for locking the open inter-rack passages A-C, and the inter-rack passages A-C. The interlock release switches 15a to 15c are provided for each rack so that any of the inter-rack passages A to C can be opened only when the interlocks of all the rack passages A to C are released. When the power switch 25 is turned off, and when the interlocks of all the inter-rack passages A to C are released, the control means 17, 23 immediately move the inter-rack passages. When the formation command 20b is given to the moving rack drive means 19 and there is a rack-to-rack passage interlocked, the non-detection state of the worker passage detection means 7 to 9 is set. When continued, the moving rack between passage forming command 20b after releasing the interlock
Can be provided to the moving rack drive means 19.

Further, in the case of the moving rack device provided with the worker detecting means 37 in the inter-rack passages A to C, the control means 17 and 23 perform the work when the power switch 25 is turned off. When the person detecting means 37 is in the non-detecting state, the moving rack inter-passage forming command 20b is immediately given to the moving rack driving means 19, and the worker detecting means 37 is detected.
Is outputting an operator detection signal, the moving rack inter-path formation command 20b is issued when the detection signal disappears.
Can be provided to the moving rack drive means 19.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION A preferred embodiment of the present invention will be described below with reference to the accompanying drawings. In FIG. 1, 1 and 2 are fixed racks standing upright at both ends, and 3 and 4 are both fixed racks 1. Two
It is a moving rack that is installed side by side so that it can move laterally between them. Driving units 5 and 6 for lateral movement are mounted on each of the movable racks 3 and 4, and the movable racks 3 and 4 are laterally moved by the driving units 5 and 6, whereby the fixed rack 1 and the movable rack 3 are moved. It is possible to selectively open the first working passage A between the moving racks, the second working passage B between the moving racks, and the third working passage C between the moving rack 4 and the fixed rack 2.

At the entrances of the work passages A to C, worker passage detecting means 7 to 9 are arranged. As shown in FIG. 2, the worker passage detecting means 7 to 9 are provided with a light projector 10 and a photoelectric switch (light receiver) 11 mounted on movable racks 3 and 4 located on one side of the entrances of the work passages A to C, and A reflection type photoelectric sensor is used, which is attached to a fixed rack 1 or 2 or a movable rack 4 located on the opposite side of the entrance of the work passage and includes a reflecting mirror 12 for returning a light beam from the light projector 10 to a photoelectric switch 11. When the worker passes through the entrances of the open work passages A to C, the worker passes the light from the projector 10, so that the worker passage detecting means 7 to 9 output the worker passage detection signals. Will be output. Of course, instead of the worker passage detecting means using the reflection type photoelectric sensor, it is also possible to use the worker passage detecting means using a transmission type photoelectric sensor in which a light projector and a photoelectric switch are arranged to face each other.

As shown in FIG. 1, operation panels 13a to 13c are provided on the end surfaces of the movable racks 3 and 4 on the work passage inlet side so as to correspond to the work passages A to C, respectively. As shown in FIG. 3, each of the operation panels 13a to 13c has a passage opening operation switch 14 for opening a corresponding work passage A to C.
a to 14c and the corresponding interlock release switches 15a to 15c for the work passages A to C. Of course, other operation switches and the like are provided as necessary.

The overall control system of the movable rack apparatus will be described with reference to FIG. 4. The main control means 17 having the interlock circuit 16 for locking the open work paths A to C is as follows.
Passage opening operation switch 1 from each operation panel 13a to 13c
In response to the passage opening commands 18a to 18c from 4a to 14c, the opening commands 20a to 20c for each passage are output to the moving rack drive means 19.

The movable rack drive means 19 includes the drive units 5 and 6 of the movable racks 3 and 4, and opens one working passage corresponding to the passage opening commands 20a to 20c among the working passages A to C. The drive unit 5 of the moving rack 3 or the drive unit 6 of the moving rack 4 is operated to move the moving rack 3 or 4
Alternatively, both moving racks 3 and 4 are laterally moved in either direction. Then, the passage opening completion signals 21a to 21c corresponding to the respective work passages A to C are given from the moving rack driving means 19 to the main control means 17, and the work passage opening control ends. The main controller 17 is connected to the worker passage detectors 7 to 9, and one of the worker passage detectors 7 to 9 outputs a worker passage detection signal when the work passage is opened. And the moving racks 3 and 4 that are moving laterally at that time
The moving rack driving means 19 (driving units 5, 6) is controlled so as to make an emergency stop.

Further, the main control means 17 locks the open work passages A to C by the interlock circuit 16, and as long as there are interlocked work passages A to C, the passages are opened from the operation panels 13a to 13c. Operation switches 14a-1
Even if each passage opening command 18a-18c by 4c is received,
The passage opening commands 20a to 20c are not output. Therefore, the passage opening operation switches 14a to 14c of the operation panels 13a to 13c
Before that, the operator who operates 14c operates the interlock release switches 15a to 15c on the operation panels 13a to 13c of the open work passages A to C (the open work passage A at the time of the operation). ~ You can check the safety by looking at C), interlock release command 22a
.About.22c must be provided to the main control means 17 to release the interlock of the open work passages A to C.

The seismic control unit 23 (which may be incorporated in the main control unit 17) added to the main control unit 17 according to the present invention is provided with a timer mechanism 24 capable of adjusting a set time, and a moving rack is provided on the input side thereof. The operation signal of the power source opening / closing key switch 25 of the drive means 19, the worker passage detection signal 26 of the worker passage detection means 7 to 9, and the main control means 17
The interlock signal 27 from the mobile rack driving means 19, the opening completion signal 21b of the work passage B from the moving rack driving means 19 and the moving rack operating signal 28 are input, and from the output side, for opening and closing the power source of the moving rack driving means 19. A command 30 for starting the electromagnetic switch 29 and a path opening command 3 for opening the working path B
1 and the interlock release command 32 are output.

The function of the seismic resistance control means 23 will be described with reference to the flow chart shown in FIG. 5. When the key switch 25 is turned on, the electromagnetic switch 2 is activated by the start command 30.
9 is closed and the moving rack drive means 19 is ready for operation. In this state, as described above, the passage opening operation switches 14a to 14c of the operation panels 13a to 13c.
By this operation, both or one of the movable racks 3 and 4 can be laterally moved to the left or right to open any one of the work paths A to C.

Therefore, as described above, the key switch 25
After the door is closed, the timer mechanism 24 of the seismic control means 23
When the worker enters the open work passages A to C before the set time elapses, the worker passage detection signals 7 to 9 in the passages are activated to set the worker passage detection signal. 26 is input and the timer mechanism 24 is reset. Also, when the moving racks 3 and 4 are moved laterally by operating the passage opening operation switches 14a to 14c of the operation panels 13a to 13c, the timer mechanism 24 is reset by the input of the moving rack operating signal 28.

Until the set time (for example, 30 minutes) set in the timer mechanism 24 elapses, the worker passage detecting means 7 to 9 do not operate, and if the moving racks 3 and 4 remain stopped, When the set time has elapsed, it is checked whether or not there is an interlocked work passage, and when the interlock signal 27 is input, the main control means 17
In response to this, the interlock release command 32 is output, and the lock of the open work passages A to C is released. Then, a passage opening command 31 for opening the work passage B is output. The main control means 17 outputs a path opening command 20b for opening the work path B to the moving rack driving means 19 according to the path opening command 31, so that the moving rack driving means 19
The movable racks 3 and 4 are laterally separated and laterally moved to the positions adjacent to the fixed racks 1 and 2, respectively, to open a work passage B between the movable racks 3 and 4 as shown in FIG. 1B. Of course, if the work passage B is open, the control after the set time has not been performed.

When the key switch 25 is closed at the end of work hours or at the break time, it is checked whether there is an interlocked work passage, and the interlock signal 27 is input. If there is not, a passage opening command 31 for immediately opening the work passage B,
20b is output, and the moving rack drive means 1 is output as described above.
The work passage B is opened by 9. Then, when the work passage B is opened and the passage opening completion signal 21b is input, the output start command 30 is lost, the electromagnetic switch 29 is opened, and the moving rack drive means 19 is powered off. If there is an interlocked work passage when the key switch 25 is closed, the control by the timer mechanism 24 is performed as described above, and the interlock is automatically released after the set time elapses. After that, the passage opening commands 31, 20b for opening the working passage B are output,
The work passage B is opened as described above. Then, when the work passage B is completely opened, the electromagnetic switch 29 is opened and the moving rack drive means 19 is powered off.

In place of the worker passage detecting means 7 to 9 of the above embodiment, an inside rack passage such as a zone sensor capable of detecting whether or not an operator enters the open passages A to C. It is also possible to use the worker detecting means of. For example, a light beam passing space in the moving direction is provided at the lower ends of the movable racks 3 and 4, and as shown in FIG. 6, the light projectors 35 are provided at the lower end of one of the fixed racks 1 at appropriate intervals in the working passage depth direction. Are arranged side by side, and the photoelectric switch (light receiver) 36 is provided at the lower end portion of the other fixed rack 2 so as to individually receive the light beams emitted from the respective light projectors 35 and passing through the light beam passage spaces of the respective movable racks 3 and 4. Are installed side by side, and if no worker enters the open work passage, the light rays from each projector 35 are incident on all photoelectric switches 36, which is a non-detection state of the worker, and the worker does not enter the open work passage. When the light enters, the light beam of the projector 35 is blocked by the worker, the light beam does not enter the one or more photoelectric switches 36 facing each other, and the worker detection signal in the passage is output. Set 37 Rukoto can.

In the movable rack device having the above-mentioned in-passage worker detecting means 37, it is possible to check whether or not there are workers in the open work passages A to C, and therefore, as shown in the previous embodiment. No means related to the interlock of the open work passages A to C is required, and the main control means 17 and the seismic control means 23 have the worker passage detection means 7 to 9 of the worker passage detection means of the previous embodiment. Instead of the detection signal, the worker detection signal of the in-passage worker detection means 37 is used. Therefore, the seismic resistant control means 24 in the moving rack device having the in-passage worker detection means 37 is controlled as shown in the flowchart of FIG.

That is, when the key switch 25 is turned on, the electromagnetic switch 29 is closed by the start command 30 and the movable rack drive means 19 is in a operable state. In this state, as described above, by operating the passage opening operation switches 14a to 14c of the operation panels 13a to 13c, both or one of the movable racks 3 and 4 is laterally moved to the left or right to move the work passage A to. Any one of C can be opened.
When a worker enters the work passages A to C that are closed at this time and a worker detection signal is output from the worker detection means 37 in the passage, an emergency stop is applied to the movement of the movable racks 3 and 4.

Therefore, as described above, the key switch 25
After the door is closed, the timer mechanism 24 of the seismic control means 23
When the worker enters the open work passages A to C before the set time has elapsed, the worker detection signal 38 is input by the operation of the worker detection means 37 in the passage, The timer mechanism 24 is reset. In addition, passage opening operation switches 14a to 1 of the operation panels 13a to 13c
Even when the moving racks 3 and 4 are moved laterally by the operation of 4c,
The timer mechanism 2 is activated by inputting the moving rack operating signal 28.
4 is reset.

Until the set time (for example, 10 minutes) set in the timer mechanism 24 elapses, if the worker detecting means 37 in the aisle does not operate and the moving racks 3 and 4 remain stopped, the setting is made. A passage opening command 31 for opening the work passage B is output when the time passes. The main control means 17 is
According to the path opening command 31, a path opening command 20b for opening the work path B is output, and the moving rack drive means 19 is output.
Moves the movable racks 3 and 4 laterally to the positions adjacent to the fixed racks 1 and 2, respectively, and opens the working passage B between the movable racks 3 and 4 as shown in FIG. 1B. Of course, if the work passage B is open, the control after the set time has not been performed.

When the key switch 25 is closed at the end of work hours or at the break time, the worker detection means 37 in the passage at that time causes the worker detection signal 3 to be detected.
Only when 8 is not output, the passage opening commands 31 and 20b for opening the work passage B are output, and the work passage B is opened by the moving rack drive means 19 as described above. Then, when the work passage B is opened and the passage opening completion signal 21b is input, the output start command 30 disappears,
The electromagnetic switch 29 is opened and the moving rack drive means 19 is powered off.

[0024]

According to the moving rack apparatus of the present invention which can be implemented as described above, when the power switch of the moving rack drive means is turned off, the moving racks are automatically placed inside both fixed racks. Since the passage between the moving racks is formed close to each other and the power of the moving rack driving means is turned off after the passage between the moving racks is formed, the power is turned off at night, on holidays, or during a long break. When not using the moving rack device, both fixed racks that are prone to fall due to an earthquake or the like are automatically supported by the moving rack, thus preventing the fixed racks from falling due to an earthquake or the like. .

Further, according to the second aspect of the invention, even in the case of the moving rack device in which an arbitrary inter-rack passage can be opened only when the interlocks of all the inter-rack passages are released, While taking advantage of the interlock function, when the power switch of the moving rack drive means is turned off, the moving racks are automatically driven so that the moving racks are moved to the inside of both fixed racks to achieve the intended purpose. It can be achieved reliably.

Further, according to the structure of claim 3,
Even in a moving rack device provided with a worker detecting means in the aisle between racks, by utilizing the function of the worker detecting means in the aisle, the safe and automatic movement of the rack between aisles when the power switch is turned off. Can be formed to surely achieve the intended purpose.

[Brief description of drawings]

FIG. 1 is a front view showing the entire mobile rack device.

FIG. 2 is a plan view of a main part for explaining a worker passage detecting means.

FIG. 3 is a front view of an operation panel provided for each work passage.

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

FIG. 5 is a flowchart illustrating a control procedure.

FIG. 6 is a plan view illustrating an in-passage worker detection unit.

FIG. 7 is a flowchart illustrating a control procedure when the in-passage worker detecting means is used.

[Explanation of symbols]

1, 2 Fixed racks 3, 4 Movable racks 5, 6 Movable rack drive units 7 to 9 Worker passage detection means 10 Projector 11 Photoelectric switch (light receiver) 12 Reflectors 13a to 13c Operation panel 14a to 14c Working passage A to Passage opening operation switches 15a to 15c for opening C. Interlock release switch 16 Interlock circuit 17 Main controller 18a to 18c Each passage opening command 19 Moving rack drive means 20a to 20c Passage opening command 21a to 21c Passage opening completion signal 22a to 22c Interlock release command 23 Seismic control means 24 Timer mechanism 25 Power supply opening / closing key switch 26 Worker passage detection signal 27 Interlock signal 28 Rack operating signal 29 Power supply opening / closing electromagnetic switch 30 Startup command 31 To open passage B Passage open command 32 Interlock release command 3 5 Light projector 36 Photoelectric switch (light receiver) 37 Worker detecting means in passage

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Claims (3)

(57) [Claims] 1. A fixed rack erected at both ends, a plurality of movable racks arranged side by side between the fixed racks, a movable rack drive means, and a power switch of the movable rack drive means. A moving rack device having a control means and forming a working path between arbitrary racks adjacent to each other by lateral movement of the moving rack, wherein the control means, when the power switch is turned off,
A moving rack driving means for moving the moving racks inside both fixed racks is given to the moving rack driving means, and the moving rack driving means is powered off after the moving rack driving means is formed based on the command. Rack equipment. 2. An inter-rack passage entrance worker passage detecting means, an interlock circuit for locking an open rack-to-rack passage, and an interlock release switch arranged for each rack-to-rack passage. Is a movable rack device capable of opening an arbitrary inter-rack passage only when the inter-lock of the inter-rack passage is released, wherein the control means is operated when the power switch is turned off. When the interlock of the rack-to-rack passage is released, the moving rack-to-rack passage formation command is immediately given to the moving rack driving means, and when there is an inter-rack passage between the racks, the worker passage detection is performed. When the non-detection state of the means continues for the set time, the inter-moving rack passage forming command is issued after the interlock is released. The moving rack device according to claim 1, wherein the moving rack device is provided. 3. A moving rack apparatus comprising worker detecting means in a passage between racks, wherein the control means is in a non-detecting state when the power detecting switch is turned off. Immediately gives the moving rack inter-path passage formation command to the moving rack drive means, and when the worker detection means outputs the worker detection signal, the moving rack inter-path passage formation command is issued when the detection signal disappears. The moving rack device according to claim 1, which is provided to the moving rack driving means.