DE2312863A1 - CONTROL FOR MOVABLE SHELVES - Google Patents

Description

Control for movable shelves The invention is a Control for movable shelves without the otherwise required connecting cables Movable shelves are used wherever there is space on the in general, the usual spaces between the individual shelves are dispensed with must become. With a larger number of shelves, there is only one space in between All the shelves are close together except for the one space in between the shelves can be assigned to the intermediate @ aum of each shelf, so each Shelf accessible E3 controls for movable shelves are already known, however are these controls both for the voltage supply of the drive motors a1s also for controlling the connecting cables between the individual shelves or the shelves and / or a control box.

The disadvantage of the known controls is that the required Cable the cost is substantial.

Furthermore, these cables are subject to great wear and tear due to the constant Subject to procedure of the shelves. also has the disadvantage that no workshop assembly for the connection cables is possible, as the cables are only required after the shelves have been installed can be attached.

Another disadvantage is that the protective measure "protection against contact" through the cabling vJn usually to shelf and the associated variety of Contact points suffers a lot.

The invention is based on the stated disadvantages and to create a simple, safe and inexpensive control.

The object is achieved in that both for the Power supply for the drive motors as well as for the control no connection cables be used.

Electrical functional description The power supply is provided via a three-phase power supply unit with 380 V, 3 x 50 Hz on 24 Gs, whose feed is absi @@@ rt (Fuses el-e3) and can be switched on via the main switch al.

The drive and control voltage is available at the output of the three-phase power supply unit required DC voltage of 24 V. The voltage is transferred via fuses e4 and e5 connected to contactor contacts Cl and C2 (current path 1).

The fuses e4 and .5 secure the vehicle voltage, the fuses e6 and e7 control the bell switch box. For the commissioning of the system the control voltage must be released by a key switch (a2).

The direction of travel is selected using the rotary switch bl or with the additional local rotary switch b2. If you want to drive on the left, so the swivel movement takes place in this direction, at the same time the circuit (current path 3) closed and contactor C1 picks up.

The main contacts switch the driving voltage to the rails, contact Cl.3 in the current path 4 prevents the switching on of the right-hand drive by opening it certain slot C2.

Contact C1.1 starts the timing relay dz in the current path, contact Cl.2 in the current path 6 häl @@ via the closed contact dz.l the circuit of the Contactor Cl closed even after the button bl was released.

Now, as described below, you can move the rack trolley to the left. The signal lamps hl and h3 indicate the operating state. is If the time set on the time relay dz has expired, the Contacts of the timing relay and interrupt the circuit to control the contactor Cl. This falls off and its contacts go back to the starting position, i.e. the Driving voltage is taken from the busbars, contacts Cl.1 and Cl.2 open the signal lamps hl and h3 go out, contact Cl.3 closes again.

When driving back, the swivel button is pressed to the right and the This closes the circuit of contactor C2. This works through contact C2.l Timing relay dz on and via contact C2.2 as well as via timing relay contact dz 2 is maintained the contactor C2 itself.

The main contacts of contactor C2 also close, but rotate they reverse the polarity so that the motors in the rack trolleys are now in opposite directions Run direction. The status display is via the lamps h2 and h4.

After the set time has elapsed, the timing relay dz releases the latch of contactor C2, which drops out and switches off the traction voltage.

t; The rails are via the cables coming from the switch box (1) and (2) are placed under 24 volts direct voltage after the direction has been selected. If the right-hand drive is selected, rail (1) has - 24 V DC, rail (2) + 24 V Gs. When driving on the left, rail (1) has + 24 V DC and rail (2) - 24 V DC.

Both voltage potentials are acquired via the pantographs (4 and 5) and led into the motor control box via a cable.

The circuits of each motor control box are protected by a fuse (el) secured.

Driving example "right": The cars A - C stand together and the travel limit switches (b2 and b3) in the car are actuated, i.e. open. Limit switch b3 only (current path 23) of carriage C is not pressed because there is no carriage immediately behind it, so closed. The aim is to create a walkable gap between shelves A and B. will.

After the direction of travel has been determined, a rotary switch in the block switch box there is now a negative voltage potential on rail (1) and a positive voltage potential placed on rail (2).

By pressing the button bl on control carriage A (current path 2) this contact is closed and the negative voltage potential of the rail I is on the rail 3 is placed. The second contact of the push button is activated open, so this shelf trolley stops.

All carriages now receive the command with the via the rail (3) negative voltage potential of 24 V Cs. With the built-in in every motor control box Diodes nl and n2 only affect the voltage potential, depending on the direction of installation Agreement. In the case of right-hand driving, the diodes block nl and thus the Travel limit switch b2 ineffective in each case. About the in negative flow direction polarized diodes n @ the voltage is now at the travel limit switches b3. Since only de @ Limit switch b3 (current path 23) not actuated, i.e. closed, can first only the contactor Cl of the Regai car C in the current @ ad 23 is excited @. By the Closing the contactor contact Cl closes the electric circuit of the traction motor and this starts rotating clockwise.

After a short movement, the travel limit switch bl des Control carriage B free (@trompfad 1 @) and closes. Dad @ rch will also be this driving contactor controlled, and the shelf trolley 3 also sits down in the direction of travel @ "right" moving.

If the shelf trolley C has closed the previously existing gaps, then by opening the shelf, the limit switch b3 (Strom @ pfad 23) is actuated and open. The vehicle contactor falls off and the engine stops. The following one Shelf trolley B is also controlled by the travel limit switch b3 im as described above Current path 13 shut down when driving onto shelf trolley C.

The button bl in the rack trolley A (current path 2) can now be released. After the set maximum operating time has elapsed switches off the time relay in the block switch box and the rails are again de-energized.

Driving example "Left" Arm the shelf trolleys A - C together. Between Bund C is to be driven into an accessible gap. By choosing the direction from the block switch box e @ we hold on de @ Schi @ ue (1) positive potential and on track 2 negative Relaxation potential. By actuating the Tastex bl on the Regslwagen C swirl on the Rail 3 positive voltage potential gel @@, while through the second, now open Contact the Regalwsg @@ C do not drive krna.

Via the Schie @ e 3, all wagons receive the move order with a positive Voltage potential. The diodes n2 in the reverse direction leave the limit switches b3 become ineffective, but the diodes nl lying in the forward direction put the positive voltage at travel limit switch b2. Driving contactor Cl is activated, current path 1 closed and the shelf trolley A moves to the left. This is followed by the @egfahrt of the trolley A, the limit switch b2 in the rack trolley;) is closed and this also moves through the process already mentioned to the left.

If the gap is closed, the drives switch on as with Clockwise rotation @written by the limit switch b2.

Fault If the car goes out of control during the fanrt touches the safety strip located in the gap, the drive will the car stopped.

The limit switches b4 and b5 connected to the safety rails are like the travel limit switch b2 or b2, by means of upstream diodes only for their assigned Fahrtich @@ ng wi @ ksam. The safety limit switch in the direction of travel speaks on (Str @@ @ad 6. 16, 26), the auxiliary relay dl pulls on uni stays above its Contact dl.1 in self-holding. At the same time, the con @ act al.2 opens and interrupts the control of the ear contactor Cl, the motor stops. via contact d1.3 an indicator lamp in the pushbutton switch is activated, which is sent to the operator through the optical signal first draws attention to the error. N @ ch @uittigung of the travel command button or after the switch-on time has elapsed, the above-mentioned special mode is deleted.

If an electronic voltage regulator is @@@@@ @@@ geser @ t, a St @ ßfree starting and @ aging of the shelves achieved @erden.

Claims (9)

Claims 1.) Control for movable shelves, d u r g e n e nz e i c h n e t that for the control of the rack drives no connecting cables between the individual shelves are required. 2. Control for movable shelves according to claim 1, d a d u r ch It is not noted that for the voltage supply of the rack trolley motors also no connection cable required between the individual rack trolleys are. 3. Control for movable shelves according to claim 1 and 2, d a -d u r c h g e k e n n n e i c h n e t that the rails of the shelves for the control the shelf trolley can be used. 4. Control for movable shelves according to claim 1, 2 and 3, d ad D u r c h @ e k e nn n n e i nt e t that the rails of the shelves for the power supply the Regalwa @@ nmotore can be used. 5. Control for movable renals according to claim 1, 2, 3 and 4, d a d u r c h g e k e n n n z e i c h n e t that the electrical connection between the rails and rack control or rack drive via the wheels of the rack trolleys he follows. 6. Control for movable shelves according to claim I, 2, 3, 4 and 5, d s d u r c h e k e n n n z e i c h n e t that the electrical connection between the runways and rack control or Shelf drive also takes place via grinders. 7. Control for movable shelves according to claim 1, 2, 3, 4, 5 and 6, d u r g e k e n n n z e i c h n e t, that by changing the polarity the direction of rotation of the drive motors and thus the direction of travel on the busbars the shelves is changed. 8. Control for movable shelves according to claim 1, 2, 3, 4, 5, 6 and 7, that is for the voltage supply A conductor line is also used for the shelf trolley doors. 9. Control for movable shelves according to claim 1, 2, 3, i, 5, 6, 7 and 8, that the running rails are only for are under voltage for a short time, so no voltage is present in normal operation the shelves are still in contact with the runways. Io. Control for movable shelves according to claim 1, 2, 3, i, 5, 6, 7, 8, and 9, d u r c h e k e n n n z e i c h n a t that by an electrical Voltage regulation a smooth approach and holding of the shelves is achieved. L e rs'e i t e