SU738969A1 - Conveyor control device - Google Patents

Description

one

The invention relates to devices for remote control of a trance by porters or conveyors and should be applied in an industrial transport port.

A device for controlling a conveyor f contains a address block, a command memory, a conveyor position sensor, a command deny command block, a conveyor position memory block, a conveyor direction selection block fl.

Flaw; This device is, .Te-15 stop low. Tolerances transp. .

 The closest technical solution to the invention is a device for controlling a conveyor, containing an exciter element, 20 mounted on a conveyor carriage, a command prohibiting unit, one KOTojioro inputs are connected to the outputs of the addressing unit, outputs to one of the command memory block inputs, 25 others the inputs of which are connected to the reset buttons, and the outputs are connected to the one of the inputs of the block for selecting the direction of motion, with one of the inputs of the elements AND of the speed control block 30

and through the OR element with other inputs of the command blocking block, the position of the conveyor carriage, the memory position of the conveyor carriage, the output of which is connected to other inputs of the direction selector unit, the outputs of which are connected via another OR element to another input of the speed control unit, and the output of the element And the speed control unit is not through the amplifier with the motor starter 2.

However, the reliability of this device in the work is not high enough.

The purpose of the invention is to increase the reliability of the trans-porter control device.

The goal is achieved by the fact that the device is equipped with two additional excitation elements, located on the traverse of the conveyor carriage, and a control unit, made on the elements OR-NOT, NOT, AND, and triggers, one of the inputs of the elements OR NOT connected to the sensors of the position of the trolley The conveyor belt, the others with the corresponding outputs of the memory block of the conveyor cart position, the output of each element OR NOT is connected to the counting input of one of the triggers and through one of the NC elements with one of the inputs of the AND elements, One of the outputs of each trigger is connected to another input of one of the And elements, the second is connected to another input of another element, And the outputs of the first elements and the control unit are connected to other inputs according to the elements of the AND speed control units, and the outputs of the other elements and the control unit are connected with the corresponding inputs of the storage unit position of the conveyor cart.

. FIG. 1 is a block diagram of the device; in fig. 2 is an electrical diagram of a single cell of a trolley passage control unit; in fig. 3 table of exit states of the elements of the cell of the trolley passage control unit; in fig. 4 - installation diagram of the traverse with excitation elements on the conveyor carriage ..

 The device contains sensors 1.11, 3 positions, transporter carts (one at each point), yoke 2, mounted on the conveyor carriage, excitation elements 3, mounted on the yoke 2, address block 4 with elements 4.1-4.3 and switches P1- PP connected to block 5 of the prohibition of passage of a commander with elements 5.1-5.3, block 6 of the memory of the position of the trolley with elements 6.1-6.3.3, connected to block 7 of the choice of direction of movement of the trolley with elements 7.1-7b, in turn connected with block 8 of instruction memory and block 5 of prohibiting the passage of commands with. elements 5.1-5.3 through the element OR 9, the conveyor drive speed control unit 10 connected to the command memory block 8 with elements 8.1-8.3, to the output elements of the driving direction selection block 7, the conveyor cart through the street 11 and the actuator winding. 12 through the amplifier 13.

Each 1 is connected to one of the inputs, the OR-NOT element 14 cells 15.1-15.3 of the control unit 15 for the passage of which

no carts, outs

connected to speed control unit 10, outputs B, with corresponding inputs of memory unit 6 of the trolley car, and the second input of the OR-HE elements 14 is connected to the corresponding output of unit 6 of the memory of the carriage position.

The cells of block 15 include, in addition to element 14 OR-NOT, trigger 16, and two matching schemes 17.1 and 17.2. Moreover, the output of the element OR-NOT 14 is connected to the counting input of the trigger 16 and the input of the element HE 18, and: the outputs element HE 18 and trigger

16 - with the corresponding inputs of the match schemes AND 17.1 and 17.2.

The device works as follows.

When giving a command from the address block 4 by pressing any of the buttons 4.1-4. 3, the signal through the corresponding switch P1-PZ, which is set in advance to the desired position (what sets the address of the conveyor cart), passes through the prohibition block 5 and is memorized by the corresponding elements of the command memory block 8. The memory block 8 gives a signal through the OR element 9 to lock all elements 5.1-5.3 of the prohibition block 5 on the register chains of the block 7 and on one of the matching schemes 10.110 .3 and block 10. Depending on where the cart was previously conveyor, block 6 of the carriage memory position, prohibits the corresponding elements 7.1-7.6 of block 7 Then the signal from block 8 passes through one of the chains of block 7, including the corresponding starter 19 Forward, 20 Backward movement of the conveyor belt of block 7 and through the OR element 11 in block 10, including the motor starter 12, in p The result is that the conveyor drive spins up to nominal speed ..

When a cart approaches a given point of stop, for example a second one, the output state of the elements of the cell of block 15 corresponds to the position O of the table.

When sensor 1.2 is triggered from one of the extreme (depending on which side the trolley is moving from) exciting elements 3 located on the traverse 2 of the conveyor carriage, the state of cell 15.2 of unit 15 changes and will correspond to Position 1 of the table. The trigger 16 changes the state of the outputs, and the signal from output A is fed to the speed control unit 10 and gives the command to brake the drive of the conveyor belt. The speed of the trolley begins to decrease to the desired value.

Upon further movement of the trolley, the sensor 1.2 leaves the zone of influence of the last exciting element 3 located on the traverse of the trolley 2. The state of the outputs of the element I of cell 15.2 15. changes and will correspond to position 2 of the table.

At the approach of the conveyor carriage directly to the specified breakpoint, the sensor of this breakpoint is again activated by the influence of the middle (main) exciting element.

Claims (2)

Now the state of the output elements / cells 15.2 of block 15 will correspond to position 3 of the table. At output B, a signal appears that enters the corresponding memory cell of block 6. From output B of this memory cell, the inhibit signal 1 goes to the second input of the OR-NOT element 14. cell 15.2 of block 15, thereby blocking the signal from the sensor 1.2 when sending a cart to another breakpoint, which occurs in it under the influence of one of the extreme excitations of their elements. . The memory cell of block 6 of this breakpoint will be in the on state until it receives a signal to clear the memory from the output B of the cell block 15 of another breakpoint after the Transporter Trolley arrives there. From the enabled memory cell of block 6, the inhibit signal will go to block 7 on the very elements that the command came from block 8. Both elements of block 7 are locked in this and the other register. The teams do not pass along either one or the other chain, and the Transporter cart stops. The release of the cart is performed by issuing the command with the reset buttons 21.1 21.3 of the corresponding memory of block 8. After this, the circuit is ready for sending the cart to another point. The type of excitation elements placed on the traverse of the conveyor carriage is determined by the type of sensors. If sealed contacts (reed switches) are used as sensors, then permanent magnets are used as excitation elements. For induction sensors, plates of ferromagnetic material can be used. The length of the crosshead departure is determined by design or experimentally depending on the operating speed of the trolley, the allowable deceleration and the required accuracy of its stopping. Use of the invention. It is necessary to do with only one sensor at each breakpoint (while ensuring smooth deceleration of the conveyor drive), which leads to a reduction in the total number of sensors and increase the reliability of the device in operation. Claims. A device for controlling a conveyor containing an exciter; an element mounted on the conveyor carriage, a command blocking block, one inputs of which are connected to the outputs of the addressing block, outputs to one of the inputs of the command memory block, the other inputs of which are connected to reset buttons, and outputs from one of the inputs of the motion direction selector , with one of the inputs of the elements AND the speed control unit and through the element OR with other inputs of the block for the passage of commands, sensors for the conveyor carriage bed / memory unit of the conveyor carriage position, the outputs of which are connected to other inputs of the directional selector unit, the outputs of which are connected via another element. OR to another input of the speed control unit, and the output of the element AND speed control unit is connected through an amplifier to the motor starter winding, characterized in that, in order to increase the reliability of the device in operation, it is equipped with two additional excitation elements located on the traverse of the conveyor carriage, and a control unit made on the elements OR-NOT, NOT, AND, and triggers. elements OR-KE are connected to sensors of the position of the conveyor carriage, others are connected to the corresponding outputs of the memory unit of the position of the conveyor carriage, output of each element OR NOT connected to the counting input of one of the triggers and through one of the elements NOT to one of the elements And, one of the outputs of each trigger is connected to another input of one of the elements AND, the second to another input of another element AND, the outputs of the first elements AND of the control unit are connected to other inputs of the cooTBeTCTBSTotitHx elements AND of the speed control unit, and moves other elements and control unit are connected to sbotvetstvugoschimi, memory unit inputs the position of the conveyor trolley. Sources of information taken into account during the examination 1. USSR author's certificate No. 422232, cl; B 65 G 43/00, 01.28.66. 2. USSR author's certificate No. 461874, cl. B 65 G 43/08, 07/05/71 (prototype). ti f№lfKt - 9fKffif 738969 7aS / iui (a Fig.Z four I Trolley  Fy