SU441220A1 - The device automatically selects the direction of movement along the shortest path - Google Patents

Description

one

Devices are known for automatically choosing the direction of movement along the shortest path, and the advantages for mobile warehouses of small capacity, made in the form of elevators with cargo suspensions, containing a power source, a polarized relay included in a bridge circuit, and a switch for cargo suspensions of a rack. However, they issue a command only to enable the conveyor rack.

The purpose of the invention is to obtain additional commands.

This is achieved by the fact that the proposed device is equipped with a transformer with two secondary windings, the first of which is divided into sections, the number of which is equal to the number of cargo hangers of the rack, and the voltage of the sections are equal to each other, and the second winding is non-sectional and the voltage of the first The outputs of the secondary windings of the transformer are connected to the rectifying bridges of the bridge circuit, and the outputs of the bridges are interconnected via a coil of a polarized relay and each bridge Loaded to its resistor.

For an even number of cargo suspensions, it is advisable to make the voltage of the second secondary winding equal to half the total voltage of the first, and for an odd number

suspensions the voltage of the second secondary winding is half the total voltage of the first one minus the voltage equal to half the voltage of one section of the first secondary winding.

Sections of the first secondary winding should be connected in series with each other in a ring through normally closed contacts of the suspension switch, and with a rectifying bridge through normal open contacts of the suspension switch and limit switches.

The drawing shows a diagram of the described device.

Transformer 1 has one primary and two secondary windings 2 and 3. The primary winding is connected to power supply 4. The first secondary winding 2 is divided into sections 5-14, the number of which is equal to the number of cargo hangers of the rack (positions 5-14 designate also the corresponding sections of the contact groups of the switch 15). The stresses of sections 5-14 are equal. All sections 5-14 through the normally closed contacts of the switch 15 of the suspensions are connected in series with each other in a ring, and through the normally open contacts of the switch 15 and the limit switches 16-25- to the rectifier bridge 26.

The second secondary winding 3 is non-partitioned.

With an even number of cargo nodes, the voltage of the second secondary winding 3 is equal to half the total voltage of the first,

n-Ue That is, the value -.; -;

and nree an odd number of cargo suspensions -

(rt-l) -i / c

the magnitude

number of freight

rack hangers, U is the voltage of one section of the first secondary winding.

A rectifying bridge 27 is connected to the second secondary winding 3. The outputs of bridges 26 and 2 / are connected in opposite through a coil of a three-position polarized relay 28, and each bridge is loaded on its own resistors 29 and 30, respectively.

The device works as follows.

If, for example, switch 15 sets the second load suspension (the ground contact is switched on switch 15) and the second suspension is also at the unloading position of the rack (the corresponding limit switch 17 is closed), then the rectifying bridge 2b is connected to sections 6-10 i.e. to five sections.

The voltage Ui, taken from these sections, is rectified by bridge 26. The voltage Uz, taken from the second secondary winding, is always constant and equal in this case to the sum of the voltages of the five sections. The voltage Uz is rectified by bridge 27. Since, while the bridges are connected in opposite, the coil of relay 28 is de-energized, its right and left contacts are open.

If the second suspension is located at the unloading position of the warehouse (the end lock 17j is closed, and the suspension switch 16 sets the suspension, for example, the sixth one (. The contact group 10 is switched in the switch 15), then the rectifier bridge is connected to section 10. 1 as In this case, the voltage tVi is less than U, then a voltage proportional to the difference in voltage Ui and Uz will be applied to the coil of the polarized relay, and a current flows in the direction A through relay 28

For example, the right contact of the polarized relay closes, a command is issued to move the conveyor with cargo suspensions along the shortest path, for example, clockwise. When the conveyor moves, the intermediate limit switches 18, IV and 20 switch sequentially. The number of sections feeding bridge 26 increases, i.e. sections 11, 12, 13, etc. are connected in series. The voltage t / i increases, the difference between the voltages f / i and Uz decreases, and at the moment when the given pole hangs up to the unloading position, i.e. the limit switch 21 closes by connecting section 14, the voltage Ui is compared to the voltage Uz, the polarized relay 28 is de-energized and the conveyor stops .

If the second suspension (closed limit switch 17) is located at the unloading position of the rack, and the switch 15 sets the suspension, for example, the ninth (contact group 13 in switch 15 switches), then the rectifying bridge 26 will be connected to sections 13, 14, 5 -

10 (total eight sections). Since, in this case, the voltage Ui is greater than the voltage Uz, then through the polarized relay 2nd the current flows in the opposite direction b. The left contact of the relay 28 closes and a command is issued.

on the movement of the conveyor with cargo suspensions in the shortest way already counterclockwise. When the conveyor moves, the intermediate limit switches 16, 25 are switched sequentially.

and others. The number of sections feeding bridge 26 decreases, i.e. sections 10, 9, etc. are switched off sequentially.

The voltage Ui decreases, the difference between the voltages L / i and Uz also decreases, and at the moment when the specified ninth suspension approaches the unloading position of the rack, i.e. the limit switch 24 closes, disconnecting section 8, the voltage i is compared with voltage Uz, polarized

relay 28 is de-energized and the conveyor stops.

Thus, each position of a given cargo suspension relative to the unloading position of the rack corresponds to

a certain voltage that is allocated on the coil of a polarized relay 2b, and the voltage value indicates the removal of a given suspension from the unloading position, and the polarity - to the direction of its movement to the unloading position along the shortest path. This allows receiving commands from the device to turn the conveyor on and off, as well as additional commands, for example, to slow down the conveyor movement.

one, two, etc., cargo suspensions before the arrival of the set to the unloading position of the rack.

Nredmet of the invention

Claims (4)

1. Device for automatic selection of the direction of movement along the shortest path, mainly for mobile warehouses small containers, made in the form of elevators with cargo suspensions, containing a power source, a polarized relay included in a bridge circuit, and a switch for cargo suspensions of a rack, characterized in that, in order to receive additional commands, the device is equipped with a transformer with two secondary windings, the first of which are divided into sections, the number of which is equal to the number of cargo suspensions of the rack, and section voltage are equal to each other, and the second winding is non-partitioned and its voltage corresponds to the total voltage of the first, the terminals of the secondary windings of the transformer are connected to the rectifying bridges of the bridge circuit, and the outputs of the bridges are connected oppositely to each other via a katuil at a polarized relay and each bridge is loaded on its resistor. 2. The device of claim 1, characterized in that with an even number of cargo suspensions the voltage of the second secondary winding is equal to half the total voltage of the first, and with an odd number of suspensions the voltage of the second secondary winding is equal to half the total voltage of the first voltage minus the voltage equal to half the voltage of one section of the first secondary winding. 3. The device according to claim 1, characterized in that the sections of the first secondary winding are connected in series with each other in a ring through normally closed contacts of the suspension switch. 4. Device on PP. 1, characterized in that the sections of the first secondary winding are connected to a rectifying bridge through normally open contacts of the suspension switch and limit switches. L