JPH01156212A - Mobile rack equipment - Google Patents

Abstract

PURPOSE:To provide a dispersion opening control function by providing a dispersion switch in one movable rack and controlling this dispersion switch collecting all the movable racks once in one side to be subsequently dispersed with a predetermined space, in case of the captioned equipment having the electrically driven movable rack. CONSTITUTION:A dispersion controlling push button switch 38 is provided in a left side rack 4A, and inputting its signal to a control unit of the left side rack 4A, a leftward traveling instruction is output to a right side rack 48. The right side rack 48 receives while transmits the instruction by transceiving photoelectric switches 26, 27 to the next movable rack 4C. In this way, each movable rack 4B-4E is forcedly collected to the left side. When execution completion is confirmed, a dispersion instruction signal is output to the right side rack 4B. Thus successively to the next racks 4C-4E, a dispersion instructions transmitted. Then moving each movable rack 4B-4E to the right respectively for the determined time, the rack is dispersed to a predetermined position. Thus dispersion can be controlled.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to movable shelving equipment having electrically movable shelves.

Conventional technology This type of movable shelf equipment in which a plurality of movable shelves are installed on a straight track is shown in Utility Model Application Publication No. 62-68904@, and its outline is shown in Figures 4 to 6. has been done.

That is, a plurality of movable shelves 4 are arranged on the linear track 3 between the first fixed shelf 1 and the second fixed shelf 2. 1st. The second fixed @ 1, 2 etc. 11 has W number of compartment storage spaces 5
is provided. The movable shelves 4 are placed on the linear track 3 via wheels 6, and can be moved individually by driving the wheels 6 with a motor 7 mounted on each movable shelf 4. Further, each movable a4 is provided with a drive device 8 for movement control, and between adjacent drive devices 8, and between the end drive device 8 and the first. A power supply cable 9 is wired between the second fixed shelves 1 and 2. Both ends of each cable 9 are connected to the first. It is fixed to the side upper ends of the second fixed shelves 1, 2 and the movable shelf 4 with fixtures 10.

11 is the wall of the building where the mobile vJ@ equipment is installed, 1
Reference numeral 2 denotes a work space where cargo is loaded into and taken out of the divided storage space 5 by a forklift vehicle or the like.

Furthermore, an approach detector 73 for detecting the approach of the possible fBJ shelf 4, an intrusion detection device 14, and a bumper switch 15 are provided. The intrusion detection device 14 detects when a worker or the like enters the space 12 while the movable device 114 is moving, and is installed at a height of several tens of centimeters from the floor to prevent workers from stepping over it. Therefore, the drive device 8 stops the movement of the vehicle in response to the operation signal of the intrusion detection device 14 to ensure the safety of the workers.

The bumper switch 15 detects when a load or the like is placed in the traveling direction of the movable shelf 4 by contacting the load, and prevents the load from being caught in the movable shelf 4 or becoming locked. The drive device 8 stops moving the movable shelf 4 in response to the operation signal of the switch 15.

Between the drive devices 8 of adjacent movable@4, the right-hand command signal output by operating the open command switch or the right-hand command signal input from the shelf on the left side of the shelf is transmitted to the right of the shelf. It also transmits the left-hand command signal output by operating the open command switch or the left-hand command signal input from the shelf on the right side of that shelf to the left side of that shelf. It is supposed to be transmitted to the shelf located in. Also, between the driving devices 8 of adjacent movable shelves 4, a stop signal generated on that shelf or inputted from the left shelf is transmitted to the right shelf, and a stop signal generated on that shelf or inputted from the left shelf is transmitted to the right shelf. A stop signal input from the shelf is transmitted to the left shelf. Such transmission and reception of signals between adjacent shelves is performed by optical signal transmission means consisting of a light emitting section and a light receiving section.

Figure 6 shows an example of an optical signal transmission means, which is movable @4.
Light emitting elements 1 arranged vertically on the frontage side of the side plate 4A of
6 and the light receiving element 17 constitute an optical signal transmission means. Each light element 16 on one shelf faces the light receiving element 17 on the other adjacent shelf, and a predetermined signal is transmitted to the adjacent shelf by the lighting and clearing operations of the light element 16. ing. The drive device 8 includes a light-receiving element 17A that receives a left-hand command signal sent as an optical signal from the right-hand shelf, a light-emitting element 16A that outputs a right-hand command signal as an optical signal to the right-hand shelf, and a light-receiving element 16A that outputs a right-hand command signal as an optical signal to the right shelf. Light receiving element 17B of the stop signal sent by
and light emitting element 1 that outputs a stop signal to the shelf on the right side with an optical signal.
6B is connected, and also a light emitting element 16Q that outputs a left row command signal as an optical signal to the left shelf, a light receiving element 17G for a right row signal sent as an optical signal from the left shelf, and a light receiving element 17G that outputs a left row command signal as an optical signal to the left shelf. A light-emitting element 16D that outputs a stop signal as an optical signal, and a light-receiving element 17 for receiving a stop signal sent from the left shelf as an optical signal.
) are connected.

With the above configuration, the rightward command signal and the leftward command signal output from the desired drive device 8 by operating the open command switch are converted into optical signals via the optical signal transmission means consisting of the light emitting element 16 and the light emitting element 17. are transmitted to the right shelf and left shelf, respectively. For a shelf to which a right-hand command signal or a left-hand command signal is input, the drive device 8 determines whether there is enough room to move to the right when the right-hand command signal is input or to the left when a left-hand command is input. The proximity detector 13 determines whether there is enough room to move to
According to this determination, for example, ′
As shown in FIG. 7, when the movable shelf 4 is driven by the motor 7 to travel at a constant speed V1 toward the first fixed shelf 1, and the approach detector 13 detects that it has approached the required deceleration distance L1,
The drive device 8 stops the motor 7, causes the vehicle to travel at deceleration (2), stops at the desired stop position S without causing a collision, and forms a work space 12 at a position corresponding to the operated opening command switch. ing.

Problems to be Solved by the Invention However, in the conventional configuration, the necessary work space 12 is formed using the proximity detector 13, and the work space 12 is not required, for example in a refrigerated warehouse. In case,
Since the fixed shelves 1 and 2 and the movable shelves 4 and the movable shelves 4 do not have a function of opening them at equal intervals, that is, they do not have an opening control function, it is difficult to cool the loads stored in the divided storage space 5 evenly and efficiently. could not.

The present invention is intended to solve the above-mentioned problems, and aims to provide a movable shelf facility in which signals are sent and received using a photoelectric device and has an unfolding control function.

Means for Solving the Problems In order to solve the above problems, the present invention provides a fixed shelf, a plurality of movable shelves that reciprocate on their own wheels on a track, and a spread switch provided on the one movable shelf. Each of the movable shelves includes mutual approach detection means, a motor that drives the wheels in a forward and reverse manner, and an operation signal from the approach detection means, and a movement command signal of a start switch, etc. The movable shelving equipment is equipped with a drive means for driving a motor and a communication means between the movable shelf drive means, wherein the movable shelf drive means provided with the unfolding switch is forced to the left by operating the unfolding switch. Generate a row (right row) signal and drive the motor to travel left (right row) until the approach detection means operates, and upon completion of the left row (right row), generate a spread control signal and drive the motor for a certain period of time. a control unit that drives the motor to move the movable shelf (rightward or leftward) and outputs the forced leftward (rightward) signal and the spread control signal to the drive means of other movable shelves via the communication means; When the forced leftward (rightward) signal is inputted via the communication means, the drive means for the movable shelf not provided with the spread switch drives the motor until the approach detection means operates, and causes the movable shelf to move to the left. (rightward movement), and when the spread control signal is inputted via the communication means, the motor is driven for a certain period of time set for each movable shelf to move the movable shelf to the right (leftward movement), and the forced left movement (Right row) A control section is provided for outputting a signal and an unfolding control signal to drive means for other movable shelves via the communication means.

Operation According to the above configuration, all the movable shelves move to the left (to go to the right) in response to the forced left-to-right (to go to the left) signal output from the movable shelf on which the deployment switch is installed by operating the spread-out switch. The movable shelves gather close to the fixed shelves, and then the movable shelves move to the right or left for a certain period of time set for each movable shelf according to the unfolding control signal output from the movable shelves equipped with the unfolding switch. Spread out while maintaining a constant distance between shelves and between each movable shelf.

EXAMPLE An example of the present invention will be described below based on the drawings. Note that the same components as in FIGS. 4 to 6 of the conventional example are given the same reference numerals, and explanations thereof will be omitted.

FIG. 1 is a schematic diagram showing the control equipment of the moving 11 equipment of the present invention and its arrangement. In the present invention, as in the conventional example, a plurality of movable shelves 4 (left rack 4A, intermediate rack 48, .
4G, 4D, right rack 4E) are installed, and the 1st.
The second fixed shelf 1゜2 and the movable shelf 4 are provided with a plurality of compartment storage spaces 5, and the movable shelf 4 is mounted on a straight track 3 via wheels 6. The motor 7 is used to drive the wheels 6 to separate them. In FIG. 1, 21 is a start push button switch (hereinafter abbreviated as start PB) operated to form the work space 12 on the right side of the movable shelf 4, and 22 is a stop push button switch (hereinafter abbreviated as bottom stop PB). As shown in FIG. 2, this is input to a control device 23 which is a driving means consisting of a microcomputer, and the switches 21 and 22 each have a built-in start lamp 24 and a stop lamp 25. Note that the left rack 4A The opening OPb21A of the second opening provided in is a button switch for forming the work space 12 on the left side of the left rack 4A.38 is provided in the left rack 4A,
This is an expansion push button switch (hereinafter abbreviated as expansion pb) for commanding expansion control, and is also input to the control device 23 of the left rack 4A. 26. 27 is a photoelectric switch for transmission and reception, which is a communication means installed on the left and right sides of the movable shelf 4 facing between the movable shelves 4. Photoelectric switch on the right, main photoelectric switch on the left for transmitting and receiving 26A, 268.27A
, 278, the photoelectric switch installed on the rear side (rear side) on the right side, and the secondary photoelectric switch 26G for transmission and reception on the left side,
They are called 26D, 27C, and 27D.

Main photoelectric switch 263 and secondary photoelectric switch 2 on the right side
6D received signal a1. b1a5 and the reception signal a2 of the left receiving main photoelectric switch 273 and the slave photoelectric switch 27D.
,b,, are input to the control device 23, and the control device 23
1 to the signal to the movable 1fI4 on the right side. Ql goes to the right transmission main photoelectric switch 26A and secondary photoelectric switch 26G,
2. To the movable shelf 4 on the left @. β2 is output to the left transmission main photoelectric switch 27A and secondary photoelectric switch 27C. Reference numeral 28 denotes a proximity detector which is a means for detecting mutual proximity between shelves, and only the approach detector 28A of the left rack 4A detects the approach to the first fixed shelf 1 on the left side, and the other approach detectors 28 detect the approach to the first fixed shelf 1 on the right side. Approach to the movable shelf 4 or the second fixed shelf 2 is detected, and the output signal C of the approach detector 28 is also input to the control device 23.

Also, 29 is the first. This is an intrusion detector that detects intrusion between the second fixing @1.2 and the left rack 4A or right rack 4E, and is installed in the left rack 4A and right rack 4F, respectively.
The output signal d is input to the control device 23 of each of these movable shelves 4. Power to the movable shelf 4 is sent to each distribution box 31 via a power-only cable 30.

FIG. 2 shows a block diagram of the control device 23. Control unit @
23, right and left photoelectric switch reception signals a1, b
1 to the signal determination units 32A, 32B, interlock unit 33, control unit 34, right side and left side photoelectric switch transmission signals of l, a2, b2. Ql, 2. It is composed of signal transmitting sections 35A and 35B that output ρ2, and a motor driving section 36. The interlock section 33 includes an output signal e of the bumper switch 15, an operation signal f of a thermal relay (not shown) attached to the main circuit of the motor 7, and the left rack 4A or right rack adjacent to the fixed shelf 1.2. 4
At E, the output signal d of the intrusion detector 28 is input,
A motor stop signal q is output to the control section 34 when any of the signals e, f, and d is on. Further, the motor stop signal Q of this interlock section 33 can be any of the signals e,
It is reset by the stop valve 22 when f and d are also off. The signal determination units 32A and 32B determine the signal contents shown in Table 1 from the main photoelectric switch reception signals B1 and a2 and the secondary photoelectric switch reception signals bi and b2, and output the determination signals hi and h2 to the suppression unit 34, respectively. In addition, the Shin@Hokushin sections 35A and 35B respectively input the transmission instruction signals jt and j2 from the control W section 34, and from the signal contents shown in Table 1, send the main photoelectric switch transmission signal k 1 ,
k2 and the slave photoelectric switch transmission signal ρ1. Output A2. Further, the motor drive section 36 receives a motor speed signal m of normal rotation or reverse rotation from the control section 34 and drives the inverter 3 .
Analog speed signal @n is output to 7. The inverter 37 controls the Tanabata 7 based on the speed signal n. Nad
3. Intrusion of a worker between the movable shelves 4 is detected by turning off the input to the main photoelectric switch 263.27[3, which normally receives pulses.

FIG. 3(A) shows the operation of the control unit 34 that controls the movable shelf 4.
- This will be explained according to the flowchart in FIG. 3(E).

In FIG. 3(A), it is determined whether or not the activation Pb21 is detected to be turned on (Step 41). If the activation Pb21 is not detected to be turned on, the left-hand direction instruction signal is sent by the determination signal h2 of the left signal determination unit 32B. In step 42), it is determined whether the left rack 4A has input or has detected that the spreader Pb 38 is turned on.If it has been input or detected, the right Instructs the movable shelf 4 to move leftward, and enters the leftward flowchart (Fig. 3 (B)) (step 43).
. If it is determined in step 42 that no expansion control signal is input and detected, the determination signal h2 is used to determine whether the expansion control signal is not input or whether an expansion control instruction has been issued for the left rack 4A.In step 44), a determination is made. If so, an unfolding control instruction is given to the right movable shelf 4 using the transmission instruction signal j1, the timer in the control section 34 is reset, and the flowchart to the right of unfolding (FIG. 3 (D)) is entered (step 46). If it is not determined in step 44, a movement instruction signal is input as the determination signal h1 of the right side signal determination unit 32A (step 47), and the flowchart on the left (FIG. 3(B)) is entered. Left side signal determination section 32
When a movement instruction signal is input in the judgment signal @h2 of B (step 48), the flowchart (third
Figure (C)). When activation of activation Pb21 is detected, transmission instruction signal j1. At j2, turn to the right for the movement instruction signal.
Left side signal transmitter 35A.

35B and instructs the adjacent movable 114 to move (
Step 49), and when a movement instruction is given manually using the determination signal h1, a movement instruction is given to the left movable shelf 4 using the sending instruction signal j2 (step 50), and the approach detector 28 is activated as shown in FIG. 3(B). It is determined whether the output signal C is on (step 51), and if the output signal C is on, an approach detection signal is sent to the right movable shelf 4 using the transmission instruction signal j1 (step 5).
2). When a movement instruction is input using the determination signal h2, a movement instruction is given to the right side movable shelf 4 using the transmission instruction signal j1 (step 53), and in steps 54 and 55 of FIG. 3(C), steps 51 and 52 are performed. Similarly, the output signal C of the approach detector 28 is determined, and if it is on, an approach detection signal is sent to the right movable shelf 4 as a transmission instruction signal j1. Also, step 47.
If there is no instruction in step 48, the motor speed signal m to the motor drive section 36 is turned off in step 56) and the stop lamp 25 is turned on in step 57) in FIG. 3(E).
,finish.

First, the flowchart on the left following step 52 in FIG. 3(B) will be described. A full stop signal (
Step 58), signal for complete stop based on determination signal h2 (step 59), motor stop signal q of interlock section 33
(Step 60) is input or when the ON state of the stop Pb22 is detected (Step 61), the left movable shelf 4 is instructed to fully stop using the transmission instruction signal @j2 (Step 62).
), the right movable @4 is instructed to completely stop using the transmission instruction signal j1 (step 63), and the process returns to step 56 to stop the motor 7. When detection of leftward intrusion is inputted using the determination signal h2 (step 64), a complete stop of the right movable shelf 4 is instructed in step 63. Next, it is determined whether the determination signal h2 is an execution completion step 65), and if the determination signal h2 is execution completion, it is determined whether the determination signal h2 is an approach detection instruction step 66), and if it is an approach detection, a transmission instruction signal is sent. j1 outputs execution completion to the right side movable shelf 4 (step 67), and sends a transmission instruction signal j2 to output execution completion to the left side movable shelf 4 (step 68), in the case of movable shelves 4 except the left rack 4A. Returning to step 56, as shown in FIG. 3(E), if the on state of the rf@Pb38 is detected in the left rack 4A (step 69), the execution is completed with the determination signal h1 from the right intermediate rack 4B. After a certain period of time, the @ signal transmitter 3 on the right side
5A outputs an unfolding instruction signal to the right intermediate rack 4B (step 71), and returns to step 56. Figure 3 (B
), if the approach is not detected in step 66, or if the determination signal h2 is not completed in step 65, the left motor speed signal m is output to the motor drive unit 36, and the motor drive unit 36 outputs the speed signal @n. is output to the inverter 37, and the motor 7 is driven to move the movable shelf 4 to the left (step 72).

At the same time, a transmission instruction signal J1 is used to output to the movable shelf 4 on the right side that the process is being executed (step 73), to turn on the start lamp 24 (step 74), and the process returns to step 51 to execute the flowchart on the left.

Next, the normal right-hand flowchart 1 following step 55 will be explained with reference to FIG. 3(C). The determination signal h1 indicates a complete stop signal @ (step 75), the determination signal @h2 indicates a complete stop signal (step 76), and the motor stop signal q of the interlock unit 33 (step 77) is input or the motor is stopped. Pb2
2 is detected to be on (step 78), the right side movable shelf 4 is instructed to fully stop using the transmission instruction signal j1 (step 79), and the left side movable shelf 4 is fully stopped using the transmission instruction signal j2. (step 80), and the motor 7 is stopped in step 56. When the intrusion detection of the right row of the judgment signal 11 is input (step 81), the entire movable shelf 4 on the left side is instructed to stop in step 80. Next, it is determined whether the determination signal h1 is the completion of execution or not (Step 82), the determination signal h
1 is completed, it is determined whether the output signal C of the proximity detector 28 is on (step 83), and if it is on, the execution completion is outputted to the left movable shelf 4 by the transmission instruction signal J2 (step 84). Return to step 56. If not on,
Alternatively, if the judgment signal h1 is not completed, the right motor speed signal @m is output to the motor drive unit 36, and the motor drive unit 36 outputs the speed signal @n to the inverter 37 to drive the motor 7 and move it. Shelf 4 moves to the right (step 8)
5).

At the same time, send a transmission instruction signal @J2 to the left movable shelf 4 to output that the execution is in progress.Step 86), turn on the start lamp 24Step 87), return to step 54, and execute the right flow step t-t''. Execute.

Next, a right-hand flowchart of the spread control following step 46 will be explained with reference to FIG. 3(D). Steps 88 to 95 and steps 100 to 102 are steps 54 of the normal right-hand flowchart t - t C (Fig. 3(C)).
．． 55, Step 75 to Step 81 and Step 8
The steps 5 to 87 are the same, and the explanation will be omitted. If no intrusion is detected by the judgment signal Qh1 in step 96, the timer in the control unit 34 is activated (step 97), and the timer is activated to a constant value set for each movable shelf 4. It is determined whether the time is greater than or equal to the time TN (Step 98), and if it is greater than or equal to the time TN, the transmission instruction signal @
At step j2, output execution completion to the left movable shelf 4 (step 99), return to step 56, and if it is smaller, step 1
Perform right row at 00. The right movement will be performed for a certain period of time TN.

In addition, in FIGS. 3(A) to 3(E), the broken line indicates that in the case of the left rack 4A, the determination signal h2 and the transmission instruction signal j2 on the left side are not present, and the spread Pb3g and the approach detector 28A are not present.
Indicates the location that is bypassed or changed due to the presence of
1 and transmission instruction signal” indicates a location that is bypassed or changed due to the absence of “1”.

Next, the operation of the movable shelf 4 which was stationary at the position shown in FIG. 1 when the spreader Pb 38 of the left rack 4A is pushed will be specifically explained. When the spread Pb 38 is pressed, the left rack 4A outputs a left direction instruction to the right intermediate rack 4B as shown in steps 42 and 43 in FIG.
- Since the approach detector 28A is on as shown in steps 66 and 67 in FIG. 3(B), the intermediate rack 4 on the right side
Outputs execution completion to B. The intermediate rack 4B receives the left direction instruction from the left rack using the determination signal h2, and outputs the left direction instruction to the intermediate rack 4C as shown in steps 42 and 43 in FIG. .66,
67° As per 68, enter execution completion for left rack 4A on the left and input approach detection instruction, so intermediate rack 4 on the right
Execution completion is output to C and left rack 4A. intermediate rack 4
G, the intermediate rack 4D also operates in the same manner as the intermediate rack 4B. The right rack 4F receives the leftward instruction signal from the intermediate rack 4D, enters the leftward flowch vt~ in step 42, and detects the approach based on the determination signal h2 as shown in step 66 of FIG. 3(B). If not, it moves to the left and stops upon detection of approach. As a result of the above, all the movable @ 4 gather on the first fixed shelf 1 side. After step 68, the left row rack 4A is under unfolding control in steps 69, 70, and 71 of FIG. After a certain period of time, the unfolding instruction signal is transmitted to the right intermediate rack 4B using the transmission instruction signal j1 of the right signal transmitter 35A. Intermediate rack 48.4G
, 4D, and right rank 4E respectively determine the unfolding instruction signal in the operations of steps 44 and 45 in FIG.
Then, all the movable shelves 4 move to the right for a certain period of time TN set in steps 94 and 95 of the unfolding right movement flowchart. 1st. Determine the distance between the second fixed shelves 1 and 2,
When the number of movable @4 is N (N=5 in this example), the width of the movable shelf 4p in the running direction is W1, and the average running speed of the movable shelf 4 is V, then the right row of the nth movable shelf 4 from the left side A certain period of time TN
If (n) is TN (n, = L-NW, n N+I V-, then when the time movable shelf 4 of TN (n> For example, L=16m, w=2m
, N=5. If v = 5 m/min, S = s, 1-=
1 m, 'I'N(n) == s = n;0
．． For example, for left rack 4A, Tn (1) = O12 minutes, for right rank 4E, Tn (5) = 1 minute.If the rack is moved to the right for a fixed period of 1 minute, all movable shelves 4 will open an interval of 1'rrL. Can be spread out. In this way, by moving all the movable shelves 4 to the left and gathering them on the side of the first fixed shelf 1, and moving all the movable shelves 4 to the right for a set period of time, the first. Second fixed shelf 1, 2
In between, movable shelves 4 can be spread out at equal intervals.

In this embodiment, a photoelectric switch 26. is used as a communication means.
27 is used, but it goes without saying that a communication cable may also be used for communication.

Effects of the Invention As described above, according to the present invention, all the movable shelves are moved to the left (right) and collected by operating the spread switch, and then moved to the right (left) for a certain period of time set for each movable shelf. By doing so, it is possible to keep the distance between fixed shelves and movable shelves and between each movable shelf constant and spread them out. For example, in mobile S equipment installed in a refrigerated warehouse, items stored on fixed shelves and movable shelves Cold air circulates evenly over the loaded load, allowing the load to be cooled efficiently.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram showing the installation of control equipment for a movable shelving facility according to an embodiment of the present invention, FIG. 2 is a block diagram of the control device for the movable shelving facility, and FIGS. 3(E) is a flow chart diagram explaining the operation of the control unit of the control device of the movable shelving equipment, FIG. 4 is a front view of the conventional movable shelving equipment, and FIG. 5 is a plan view of the conventional movable shelving equipment. FIG. 6 is a perspective view of a photoelectric device section of a conventional movable shelf facility, and FIG. 7 is an explanatory diagram of a deceleration state of the conventional movable shelf facility. 1.2... Fixed shelf, 3... Track, 4... Movable shelf,
(4A...left rack, 4B, 4C, 4D...intermediate rack, 4E...right rack), 6...wheel, 7...
Motor, 21... Start push button switch, 23...
- W control device (driving means), 26.27... Photoelectric switch (communication means), 28... Approach detector (approach detection means), 32A, 32B... Signal determination section, 34...
・Control unit, 35A, 35B...Signal transmitting unit, 38・
...Spread push button switch, hl, h2...judgment signal, jl, j2...transmission instruction signal. Agent Yoshihiro Morimoto 261 Figure 6 Figure 7

Claims (1)

[Scope of Claims] 1. Consisting of a fixed shelf, a plurality of movable shelves that reciprocate on tracks with their own wheels, and a spread switch provided on the one movable shelf, each of the movable shelves mutually approach detection means;
A motor that drives the wheels in a forward and reverse manner, a drive means that receives an operation signal from the approach detection means and drives the motor according to a movement command signal of a start switch, and a drive means for each movable shelf. The movable shelf equipment is equipped with a communication means, and the driving means for the movable shelf equipped with the unfolding switch generates a forced leftward (rightward) signal by operating the unfolding switch, and the approach detection means operates. The motor is driven to the left (right) until the left (right) is completed, a spread control signal is generated when the left (right) is completed, the motor is driven for a certain period of time to move to the right (left), and the forced The drive means for the movable shelf not provided with the spread switch has a control unit that outputs a left row (right row) signal and an unfolding control signal to the drive means for other movable shelves via the communication means, and the drive means for the movable shelf not provided with the unfold switch When the forced leftward (rightward) signal is input through the means, the motor is driven to move leftward (rightward) until the approach detection means is activated, and the spread control signal is inputted through the communication means. When is input, the motor is driven for a certain period of time set for each movable shelf to move to the right (left), and the forced left (right) movement signal and spread control signal are sent via the communication means. A movable shelf equipment that has a control unit that outputs output to drive means for other movable shelves. 2. Let the distance between fixed shelves be L, the number of movable shelves be N, the width of the movable shelves in the running direction be W, and the average running speed of the movable shelves be V.
Claim 1 states that the fixed time t(n) for moving the n-th movable shelf from the left side (right side) to the right (left) is as follows: t(n)=L-NW/N+1·n/V Mobile shelving equipment.