JPH0243228Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention consists of a plurality of shelving devices, and when not in use, each shelf device is grouped together with no gaps between them, and when storing goods, a desired shelf device is moved to form a passage. This invention relates to an electrically operated dense mobile shelving device.

In order to be able to install a large number of shelves in a small space, the working path formed between the shelves should be left open for at least one aisle, and the remaining area should be filled with electrically movable shelving devices. Arrange multiple shelving devices, and move these shelving devices by operating the aisle selection switch corresponding to the required aisle or the right row/left row switch of each shelving device, and create a working aisle on the storage surface side of the desired shelving device. Various types of electric movable shelving devices have been provided in the past, which are configured to store and store articles.

The present invention relates to such a movable shelving device, and particularly aims to provide an inexpensive electric movable shelving device that is easy to operate and safe.

In the case of electric movable shelving devices, each shelf device is moved by the power of a motor, so various conventional methods have been used to prevent people or objects from being pinched in the passageway that closes when the shelves are moved. Safety equipment is provided. For example, a safety bar divided into sections of a certain length is installed continuously across the entire width of the storage surface on the storage side of the shelf device, and if a person or an obstacle comes into contact with it, the moving shelf will stop. There is something (Tokuko Akira)
52-50582). However, this type of safety device requires many switches that are linked by the operation of the safety bar, and wiring work including these must be done inside the shelf for each row, so it cannot be provided at a low cost. It's something that doesn't exist. In addition, instead of eliminating the safety device of such a safety bar, a safety cord device that can be connected and disconnected between adjacent shelves is installed at each aisle entrance to ensure the safety of all aisles so that no one can enter. There is also a safety device that allows the shelving device to move only when the cord is connected, and the drive mechanism does not operate when any of the safety cords are disconnected (see Japanese Utility Model Publication No. 11078/1983). With this type of device, the operation of connecting the safety cord, operating the switch to move the shelf, and disconnecting the cord must be performed in sequence for each aisle selection, which is complicated in terms of handling. It has its drawbacks. Therefore, the present invention has a pair of sockets attached to each shelf device on both sides of the aisle for each passage entrance, an operating piece that can be attached and detached to both sockets at one end, and the other end attached to one of the shelves mentioned above. An operating device is provided which consists of a flexible transition member fixedly attached to the device and allows the transition member to be passed across the entrance of the passageway when the operating piece is attached to one of the sockets. For all passages, the operation piece is simply attached to the socket on the side where the crossing member is passed into the passageway entry blocking state, and the operation piece for the passage to be selected is simply attached to the socket on the side that releases the passageway entry blocking state. The passage is formed, and the formed passage is automatically locked. After the payout operation is completed, the lock is released by moving the operation piece of the passage to the socket on the opposite side, and the next desired passage can be selected. To provide an economical electric movable shelf device that is easy to operate and has excellent safety.

In this embodiment, as shown in FIG. 1, a case is taken as an example in which movable shelf devices B, C, and D are arranged between fixed shelves A and E. Although the specific structure of the shelf apparatus is not shown, each of the shelf apparatuses has self-propelled reversible motors M1 to M3, and is moved by the drive of these motors. Drive control of these motors is performed by the circuit shown in FIG.

As shown in Figure 1, a power switch PWR for turning on the power is provided on the front of the shelf device B.
Limit switches LS1 to LS4 are provided at the bottom of each shelf device to control the drive of each motor, which are turned off when pushed in contact with an adjacent fixed shelf or shelf device and turned on when separated.

A passage selection operating device that also serves as a safety device is provided for each aisle between the front side plates of each shelf device and fixed shelf. Passage blocking sockets S1A to S4A constitute a first mounting section, and passage selection reception sockets S1C to S4C constitute a second mounting section for removably mounting an operating piece (in the following explanation, they may be simply referred to as "receiving sockets"). ), it is constructed of a flexible and expandable electrical connection cord connecting an operating piece and a receiving socket, and is installed as shown in FIG. FL1 to FL4 indicate interlocking lighting lights that illuminate each passage. The passage number between fixed shelf A and shelf device B is 1, the passage number between shelf devices B and C is 2, and the same goes for 3 and 4.
In this case, each code number of the operating piece, receiving socket, and passage blocking socket corresponds to the passage number.

The path selection operation according to the present invention is performed as follows. That is, with the operating pieces S1 to S4 of each passage attached to the respective passage blocking sockets S1A to S4A, if the operating piece of the desired passage is removed from the passage blocking socket and attached to the receiving socket, the shelf device moves and the corresponding passage is selected. It is formed.

For example, in order to selectively form passage 3 while passage 1 is open, first turn on the power, and as shown in FIG. After confirming that it is attached to S4A (if there is a passage where it is not attached, attach it), remove the operating piece S3 from the passage blocking socket S3A and attach it to the receiving socket S3C (the second ), the shelf devices B and C move to the right to form a passage 3 as shown in FIG. When any of the operating pieces is disconnected from the corresponding passage blocking socket, the drive mechanism will not operate even if the operating piece corresponding to the desired passage to be opened is attached to the receiving socket. Therefore, in the state shown in FIG. 3, the operating piece S3 is connected to the passage blocking socket S3
Unless it is attached to A, even if a corresponding operating piece is attached to the reception socket in an attempt to open a passage other than passage 3, none of the shelf devices will move and a new passage will not be opened. Therefore, when opening a new passage other than the existing passage that is currently open, first perform operations to prevent people from entering the existing passage (which will be closed in the next passage selection operation). After safety is confirmed by attaching the piece to the passage blocking socket and passing the connection cord to the entrance of the passage, the operation piece for the new passage to be opened is attached to the receiving socket, so these operation devices (connection cord , operating piece, passage blocking socket, passage selection receiving socket) have a dual function of passage selection function and safety guarantee function.

Moreover, after the passage is formed, the locking mechanism is automatically activated to prevent all shelf devices from moving, and the state in which entry into the passage is prevented by the connection cord is released, so the shelves can simply enter the passage and work safely. It can be carried out.

The configuration and operation of an embodiment of the present invention will be explained below with reference to the drawings. FIG. 4 shows a movement control circuit for operating the movable shelf apparatus shown in FIGS. 1 to 3;
The figure shows an aisle selection circuit for detecting operating device and movement, FIG. 6 shows a movable shelf selection circuit, and FIG.
The figure shows the motor circuit and interlocking lighting circuit. The same reference numerals in the figures indicate the same elements. Also, Figures 4 to 7
In the figure, P, X, L, RN, ST, N, 4-6
indicates that conductors with the same code are connected together.
For example, the conductive wires ST in FIGS. 4 and 5 are electrically connected.

As shown in FIG. 4, the conductor 4 connects to the normally open contact S of the start relay S, and the conductor 5 connects to the power switch PWR to connect to the breaker. Connected to the S phase of the power supply through the ELB,
A conductor 6 is connected to the S phase of the power supply via the breaker ELB. When the power switch PWR is turned on, a DC voltage is applied between the conductors P and N via the step-down transformer TR connected to the conductors 5 and 6, the fuses F1 and F2, and the rectifier MR. Furthermore, the conductor X,
L, RN, ST, operating device detection relay DT, movement detection relay RND, movement memory relay A, lock relay RL, start relay S, running time monitoring timer T, smoothing capacitor C, normally open contact r1 of relay RL, transfer contact r1'', normally open contact dt of relay DT, normally open contact a of relay A, relay
RND transfer contact rnd'', timer contact t,
The normally open contact s of the relay s is connected as shown.

In the circuit shown in FIG. 5, S1 to S4 indicate the aforementioned operating device operation pieces, S1A to S4A indicate passage blocking sockets of the operating device, and S1C to S4C indicate passage selection receiving sockets of the operating device. As shown in the figure, the operating piece has two contacts separated and facing each other, one contact is connected to the conductor P via a telescopic electrical connection cord, and the other contact is connected to the conductor P via a flexible electrical connection cord. It is connected to the conductor N via the cord and the respective operating device receiving relays SA1 to SA4.
The passage-blocking sockets S1A to S4A each consist of two short-circuiting contacts and a diode D for short-circuiting between the two contacts when the respective corresponding operating pieces are attached. Passage selection receiving socket S1C
~S4C also each have two separate contacts,
When the corresponding operation piece is attached,
One contactor is brought into contact with the positive side contactor of the operation piece, and each path selection relay C1 to
C4 and diode D are energized, and the other contact of the path selection reception socket is electrically disconnected, so even if it comes into contact with the other contact of the operation piece, the operation device reception relays SA1 to SA4 are disconnected from the circuit. Make it.
The reason why the polarity of the operation piece, the diode of the passage-blocking socket, and the passage selection reception socket are alternately different between adjacent ones is to prevent malfunctions due to incorrect attachment of the operation piece. Furthermore, in Fig. 5, the normally open contacts sa1 to SA4 of the operating device receiving relays SA1 to SA4 are shown.
sa4, normally open contact c1 of passage selection relays C1 to C4
~c4, normally open contact r1 of right travel relays R1 to R3
~r3, normally open contact f1 of left running relays F1 to F3
~f3 are connected as shown. Also, the conductors P, RN, ST, L, and N are connected with dotted lines between shelf devices B, C, and D, so even if each shelf device is moved, the electricity is connected between the corresponding terminals using flexible cables, etc. Indicates that it is connected.

In the mobile shelf selection circuit shown in Fig. 6, relays C1 to C4
Normally closed contacts c1' to c4' are connected to limit switches LS1 to LS between conductors X and N, which are connected in series.
4, right running relays R1 to R3, left running relays F1 to F3, and diode D are connected as shown. The connection between the conductor X and the cathode of the diode D between the shelf devices B, C, and D by a dotted line indicates the same as above.

In the motor circuit and interlocking lighting circuit shown in FIG. 7, the input conductors for right travel and left travel of the reversible motor M1 of the shelf device B are connected to the normally open contact r of the right travel relay R1.
1. The left traveling relay F1 is connected to the conducting wire 4 via the normally open contact f1, and the common conducting wire of the reversible motor M1 is connected to the conducting wire 6. Reversible motor M for shelf devices C and D
Similarly, relays 2 and M3 are connected as shown through their respective normally open relay contacts r2, f2, r3, and f3. In addition, the interlocking lighting lights FL1 to FL4 are connected to the normally open contacts c1 to c4 of the passage selection relays C1 to C4.
It is connected between the conducting wires 5 and 6 via. The fact that the conductive wires 4, 5, and 6 are connected by dotted lines between the shelf devices B, C, and D indicates the same thing as described above.

With the above configuration, the operation of each circuit when the shelf apparatus is operated as shown in FIGS. 1 to 3 will be explained with reference to the voltage waveforms applied to each part shown in FIG. 8. As shown in Fig. 1, when the power switch PWR (Fig. 4) is turned on with each of the operating pieces S1 to S4 attached to their respective passage blocking sockets S1A to S4A, the operating device reception relay SA1 shown in Fig. 5 is turned on. -SA4 is supplied with power from the conductor P through the path-breaking sockets S1A-S4A to close the normally open contacts sa1-sa4. Therefore, the operating device detection relay DT in FIG.
Operates via ST and closes the normally open contact dt. In this state, operate the operating piece S3 to open the passage 3 as shown in Fig. 2.
from passage-blocking socket S3A to receiving socket S3
When transferred to C, the relay shown in Figures 5 and 8
Although SA3 changes, the path selection relay C3 operates through the receiving socket S3C, and the conductor L is supplied with power through the diode D. Therefore normally open contact
Passage selection relay C3 instead of sa3 changing from closed to open
The normally open contact c3 of is closed (Fig. 5, Fig. 7),
Normally closed contact c3' is opened (Fig. 6).

Interlocking lighting FL installed in shelf device C in Figure 7
3 lights up, and the start relay S operates via the closed contact dt and transfer contact r1'' shown in FIG. 4, closing the normally open contact s and supplying power to the conductor X. Limit switch LS in condition
Only limit switch 1 is closed, other limit switches LS2~
Since LS4 is in the open state, in Fig. 6, the right running relay R1 is connected to the diode D and the limit switch LS1 between the conductor
, closes the normally open contact r1 shown in FIG. 7, and drives the motor M1 to move the shelf device B to the right. When shelf device B leaves C, limit switch LS2
is turned on, the right travel relay R2 in FIG. 6 operates via the diode D and the limit switch LS2, which closes the normally open contact r2 in FIG. 7 and drives the motor M2 to make the shelf device C travel to the right. At this time, the normally closed contact C3' in Figure 6 is open, so the limit switch LS
2 is on, left travel relay F1 does not operate]. In addition, to close the normally open contact r1 of the right running relay R1, power is supplied from the conductor P to the conductor RN (Fig. 5), and the fourth
The movement detection relay RND shown in the figure is operated to switch its transfer contact rnd'', and the movement memory relay A is activated, closing the normally open contact a and self-holding.The limit switch LS1 of the shelf device B that traveled to the right is When it comes into contact with , the switch is turned off, the right travel relay R1 is deenergized, and the motor M1 is stopped.
Similarly, when the shelf device C traveling to the right comes into contact with the shelf device B and the limit switch LS2 is turned off, the motor M2 is stopped. By releasing the energization of each of the right travel relays R1 and R2, the normally open contacts r1 and r2 shown in Fig. 5 are opened, so the power supply from the conductor P to RN is stopped, and the movement detection relay RND shown in Fig. 4 is restored. . Therefore, the transfer rnd'' is switched to the initial state, and the lock relay RL is connected from the conductor L through the normally open contacts dt and a.
The transfer contact r
1" to self-hold. Therefore, the start relay S returns and the normally open contact s opens, cutting off the current to the conductor X and locking all the shelf devices so that they do not move. Although the operation of FIG. 3 has been described, it will be obvious that the same operation will be performed when opening other passages.

Note that the running time monitoring timer T shown in FIG. 4 starts counting with the operation of the start relay S, and the movement detection relay RND and lock relay RL are activated even after a predetermined period of time, which is slightly longer than the time it takes for the shelving device to move one aisle width, has elapsed. When not operating, timer contact t is closed to operate lock relay RL. Figure 8 shows the waveform relationship during normal operation, but when the shelf device does not stop due to a defect in the limit switches LS1 to LS4, etc., or when an operation piece is attached to the passage selection reception socket S1C to S4C of an already open passage. In such a case, the lock relay RL is operated after a predetermined period of time has elapsed, and the power supply to the movable shelf selection circuit shown in FIG. 6 is cut off, resulting in a locked state.

In FIG. 4, when the lock relay RL operates, the normally open contact r1 closes, directly holding the operating device detection relay DT in the operating state. Therefore, even if the operation piece is attached or removed in another passage while the operation piece is being loaded or unloaded in the aisle after movement is completed (with the corresponding operation piece attached to the corresponding passage selection reception socket), the relay DT will not return to normal. The self-holding state of lock relay RL is ensured and the operating circuit of start relay S is cut off. That is, even after a desired passage is selected and formed, as long as that passage is in use, the control circuit of the drive section is cut off, and the lock cannot be released even if the operating pieces of other passages are operated. The lock can only be released by removing the operating piece of the currently open passage from its passage selection receiving socket.

As described above, when one of the operation pieces is removed from the corresponding passage blocking socket, even if another operation piece is attached to the corresponding passage selection reception socket, the shelf device cannot be moved, and undesired The shelf device moves only when the operation piece for one desired passage to be opened is attached to the corresponding passage selection reception socket with all the operation pieces for all passages attached to their respective passage blocking sockets, and the shelf device moves to open the desired passage. can be opened.

Furthermore, if any of the operating pieces is removed during movement, the operating device detection relay DT returns to its normal state, and its normally open contact dt interrupts the operating circuit of the start relay S, thereby stopping the shelf.

Therefore, the electric movable shelving device of the present invention has a safety function with a simple structure in which the shelving device can only be moved by putting the operating clearance cords of all the aisles other than the open aisle into a state that prevents entry into the aisle. With,
To select a desired passage, regardless of the current position of the shelf row, simply attach and insert the operating piece corresponding to the passage from the socket side that prevents passage entry to the socket side that allows entry into other passages. A desired passage can be formed with a single touch by a simple operation, and furthermore, since the above operation corresponds to releasing the passage blocking state of the passage, it is possible to form the passage as it is when the passage is fully opened, as well as before it is fully opened.ゝWork can be started by entering the passage, which has a great effect on improving work efficiency.

Furthermore, an interlock mechanism is provided that will not malfunction even if the operation piece is mistakenly attached to a socket other than the corresponding one, so that the shelf apparatus is safe and will not move erratically.

In the embodiment of the present invention, electrical cords are used as the transition members, but these may also be simply non-conductive string-like cords. , operate the operating device receiving relays SA1 to SA4,
Furthermore, it is only necessary to configure the passage selection relay to operate when it is attached to the passage selection reception socket.
Also, a magnetic proximity switch or the like may be used in place of the contact on the operating side and the contact on each socket side.
In addition, in this invention, an electrical interlock mechanism is provided between adjacent operating devices to prevent malfunctions caused by incorrectly attaching the operating pieces, but these erroneous operation prevention mechanisms are based on mechanical configurations such as fitting due to unevenness. Of course, it may be.

[Brief explanation of drawings]

Fig. 1 is a front view of the device of the present invention, Fig. 2 shows the passage selection operation device in the passage selection state, Fig. 3 shows the operation device state when the passage is in use, and Fig. 4 shows the movement control circuit. 5 shows a passage selection circuit for detecting operating device and movement, FIG. 6 shows a movable shelf selection circuit, FIG. 7 shows a motor circuit and an interlocking lighting circuit, and FIG. 8 shows each circuit. The main part waveform diagram is shown. (Shelf names in Figure 1) A, E: Fixed shelf, B, C,
D: Movable shelf (names of relays, etc. in Figure 4) ELB:
Earth leakage breaker, PWR: Power switch, F1, F
2: Fuse, TR: Step-down transformer, MR: Rectifier, C: Smoothing capacitor, S: Start relay, T: Running time monitoring timer, RL: Lock relay, RND: Movement detection relay, A: Movement memory relay, DT: Operating device Detection relay (names of relays etc. in Figure 5) C1 to C4: Passage selection relay, SA
1 to SA4: Operating device reception relay, S1 to S4:
Operation pieces of the operating device, S1A to S4A: Passage blocking socket of the operating device, S1C to S4C: Passage selection receiving socket of the operating device (names of relays, etc. in Fig. 6) R1 to R3: Right travel relay, F1 to F3: Left running relay, LS1-LS4: Limit switch (part names in Figure 7) M1-M3: Reversible motor for running, FL1-FL4: Interlocking illumination light.

Claims (1)

[Scope of Claim for Utility Model Registration] A plurality of shelving devices movable in a direction perpendicular to the storage surface by means of self-propelled motors provided on each shelf, leaving a space that can be used as a work passage for storing and dispensing goods. In an electric movable shelving device arranged closely together and configured to selectively move the shelving devices when storing and storing articles to form a desired path on the storage surface side of the shelving device where the articles are to be stored and stored. , an aisle selection operation device that also serves as a safety device using a passageway entry prevention mechanism provided for each passageway formed between each of the adjacent shelving apparatuses and between the fixed shelves or the side walls of a building in the case of the shelving apparatuses at both ends; One end is fixedly attached to one of the shelf devices or fixed shelves sandwiching the passageway, the other end has an operating piece, and can be passed across the entrance of the passageway. a flexible transition member, a first mounting member for attaching the operation piece for passing the transition member provided on the shelf device or fixed shelf, etc., facing each other across the passageway, and fixing the transition member. and a second mounting member attached to the end side, in the case of an undesired passage, the operation piece is attached to the corresponding first attachment member, and the operation piece of the desired passage to be opened is attached to the corresponding second attachment member. When attached to the member, the shelf device is moved to open the desired passage, and when any of the operation pieces of the undesired passage is not attached to the first attachment member, the shelf device is moved. The electric movable shelf device has the passage selection operation device which is not allowed to be used, and the operation piece can be controlled only when attached to the corresponding first attachment member and the second attachment member.