SU1456348A1 - Arrangement for automatic addressing of object along shortest route - Google Patents

Abstract

This invention relates to the field of process automation for controlling circular movements of mechanized racks. The goal is to increase device reliability.

Description

one

The invention relates to electrical engineering and can be used in the automation of technological processes for controlling the circular movements of mechanized racks, conveyors, etc.

The purpose of the invention is to increase the device's wear by reducing the number of contacts used.

The drawing shows the principle scheme of the device for automatically addressing an object along the shortest path.

The device contains 1.1-l buttons. call the object by the number of addressable objects, memory cells, made in the form of series-connected thyristors 2.1-2.P with diodes 3.1-3.p. corresponding to them.

The anodes of all diodes 3 are connected to the winding of the starting relay 4 with contact 4.1. The thyristor cathodes of all 2 memory cells are connected to the negative, power supply pole (not shown). The points of connection of the cathodes of the diodes 3 with the anodes of the thyristors 2 of each memory cell are connected to the power terminals of the respective sensors.

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5.1-5.P initial position of objects. The load outputs of all sensors 5 are connected to one winding terminal of the stop control relay 6, the second winding terminal of which is connected to the positive pole of the power source. Relay 6 has contacts 6.1 and 6c2.

One output of the winding of the relay 7 in the forward direction of movement is connected to the positive pole of the power supply, the second output of the winding through the corresponding contacts 8.1-8. Step finder 8 is connected to the connection points of diodes 3 to thyristors 2. Relay 7 has contacts 7.1 and 7о2.

Contact 4.1 provides the voltage supply to the generator 9 clock pulses. The counter U pulses connected to the output of the generator 9 clock pulses.

The voltage applied to the coil 11 in the forward direction of movement of the reverse actuator of the object drive is carried out by contacts 7.2 of the relay 7 in the forward direction, and to the reverse coil 12 by the contacts 10.1 of the pulse counter 10. Contacts 11.1 and 12.1 of the magnetic starters provide interlocking, and contacts 11.2 and 12.2 provide self-locking.

The closure of the contacts 10.) occurs after -,: ak counter 10 counts the specified number of pulses equal to half the number of addressable objects. The coil stepper is | Katel 8 is connected to the generator 9 clock pulses. The control input of each thyristor 2.1-2.P is connected to the positive power supply bus through the corresponding call button 1.1-1, n and the common control resistor 13. The pins 6o1 and 6o2 ensure that the drive stops when the called object is at a given position, as well as to reset the circuit to the initial state.

The device works as follows.

Suppose a device has 20 address objects, i.e. , then the installation of the counter 10 pulses must be equal to half the number of objects, i.e. ten ti

When located opposite the first object output window, the contacts of the step finder 8 are located in position 8.1. When the window to the exit window of the fourth object is called, the call button 1.4 is pressed. In this case, a control signal is supplied to the thyristor 2.4 control input through a resistor 13, the thyristor 2.4 is unlocked and then held by the current flowing through it when the coil of the relay 4 is turned on through diode 3.4. This ensures that the call command is memorized. Turning on, the relay 4 by terminal 4.1 starts the generator of 9 clock pulses, which produces pulsating voltage pulses for powering the coil of the step finder 8 and the counter of 10 pulses. With each pulse, one step of the contact of the step finder 8 moving in the forward direction, i.e. ascending serial numbers of addressable objects. At the same time, the incoming pulses are counted by the counter 10. After three pulses and, consequently, after three steps, the searcher 8 closes the contact 8.4.

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In this case, through the injected thyristor 2.4, the supply voltage is applied to the coil of the relay 7 for selecting the forward direction of movement of the object. Relay 7 with its open 7.1 contact disconnects the generator 9 clock pulses, thereby excluding the movement of the step finder 8 and the operation of the counter 10 pulses. The power supply contact 7.2 is applied to the coil of the magnetic actuator 11, which provides for the drive to be activated in the yy direction (ohm-direction, which is the shortest for the requested object with the order number four. When approaching the window, the jerk object interacts with the sensor 5.4, with By this, the supply voltage through the on-thyristor 2.4 and the sensor 5.4 is supplied to the stop control relay 6. When switched on, the relay 6 by the contact 6.2 turns off the magnetic starter 11, the object stops opposite the output window. It is reset to the rest of the control relays, and the circuit is reset to the initial position. Similarly to the above, the device works whenever the forward direction of travel is the shortest. Suppose 1m now that there is a fourth object opposite the output window and you need to call the first object. the call button 1.1 opens the thyristor 2.1 and switches on the relay 4 through the diode 3.1. The contact 4.1 switches on the generator of 9 pulses. The contacts of the step finder 8 begin alternately moving one step, starting from contact 8.4, then contact 8.5 closes, and so on. The counter 10 at the same time produces an incoming bill. the pulses and after the tenth pulse arrives, the contacts 10.1 in the coil 12 circuit of the magnetic actuator of the reverse direction are closed, which is self-blocked by the contacts 12.2 and mainly activates the drive of the object in the reverse direction.

Since the seeker must move sixteen luaroBs (from position 8.4 to room 8.1 in the forward direction) to match the finder 8.1's contact with the thyristor 2 .. 1 of the memory cell, the switching on of the relay 7 and the closure of the contact 7.2 occurs after the contact closes

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10.1 counter The switching on of the actuator 11 in the forward direction does not occur, since the contacts 12.1 are open in the circuit of its coil.

Stopping the drive and returning the circuit to the initial position is the same as when moving in the forward direction. The shortest direction of movement of the object is chosen by the step finder and the pulse counter. When the counter is triggered, before the position of the contact point of the step finder coincides with the activated call memory cell, the object moves in the opposite direction, if the coincidence occurs early in the forward direction.

Claims (1)

Invention Formula A device for automatic gfesovaniya of the shortest path, containing successively connected call buttons, memory cells consisting of series-connected thyristor and diode, and position sensors of addressable objects, whose contacts are included in the power supply circuit of the stop relay of the forward directional selection relay, connected one output through the disconnecting contact of the stop relay to the positive power supply bus, a clock pulse generator, connected via a serially connected sensor You are a relay contact ora forward direction of movement closing contact of the starting re- jio to the positive power source power amplifier stepper finder connected between 86 the output of the clock pulse generator and the minus bus of the power source, whose contacts are connected, between the memory cells and the second output of the forward direction selection relay, the forward and reverse direction coil of the reversing actuator, and the forward direction coil of the reversing actuator is connected to the minus power supply bus and through the serial connection of the reversing contact of the reverse direction of movement of the reversing actuator, the closing contact of the direction selector relay movement, shunted by the closing contact of the forward direction of movement of the Versatile Starter and Breaker Relay Contact - to the positive power supply busbar, which means that, in order to improve the reliability of the device, A pulse counter with a setting equal to half the number of addressable objects is inserted, the winding of which is connected between the minus bus of the power supply source and the output of the tdct generator the actuator and the closing contact of the pulse counter, shunted by its opening contact, to the closing contact of the direct selection relay the direction of movement and the break contact of the stop relay.