SU751740A1 - Overload protection apparatus for mine belt conveyer - Google Patents

Description

The torus 12 and the trigger 13 are connected by the execution unit 7, the time setting unit 14, the direct output of which is connected to the second inputs of logic gates And 3 and 10 and the course of the logic element 15, whose output is connected to BTOPOII input of the logic element P1LR1 4, node slippage control 16, the inputs of which are connected to the outputs (|) of the actuators 2 and 9 pulses :; . and the output is from the execution unit 7. The inverse output is the time of the driver unit 14 connecting the inon to the inputs of the decoders 6 and 12, the inverse output of the trigger 13 to the second input of the logic element 1-1 15. The receiving output of the trigger 13 is also included on tert1 th input of the logical element I 3 and the input of the reset node 17, the other input of which is connected to the direct g: output time for the set bcc: ka //, and the output is for the cIetchnki 5 and // jCOB.

When the natripod and the conveyor belt are centered, the signals from the sensors / and 8 are absentCTjrvTOT, the device circuitry elements are in the initial state. With the start of the conveyor operation, the signals from the sensors / n8 through the corresponding nTs 2 9 forms are fed to the inputs of the corresponding Logic elements And 3 m 10. Logic element And 3 is locked at the entrance, connected with the output of the trnger 3. The impulses in the master block 14 through logical AND 15 OR 4 logic elements in counter 5, which starts to count by the conveyor acceleration zone . A time, 1 block 14 generates pulses, the duration of which is defined for a given velocity range of a konseyer. Olin nz nununpodov pulses from the direct output time I set this block 14 opens the logical element element 10 and allows you to pulse the pulses of leites in touchpad 11. The other terminal impulse from the direct output entered the back of the block 14 and closes the logic element 10 and the signal from the inverse the time of master unit 14 permits reading by the prince of the 12th number of impulses / vals, in particular, by counting //,

Esnn this chs.yu reaches ssn.pn. corresponding to the minal speed of the conveyor belt, at the output of the decoder 12 there is a signal that switches the trigger 13. The latter outputs the signal to the node 17, setting: incoming counters 5 n 7 / to the initial state, and to the input of the logical element And 3, resolving input in s; etchnk 5 sensor nodes /. At the same time, from the inverted trnger ./o output, the input signal of the logic element I 15 receives a signal, which is reshres, that the NMN time, the time of the master block 14, passes through the logical

the element is And 15 in the counting 5. Thus, the achievement of the tape is the same speed as the canal. control of speed n) water barraag. and doesn’t turn off with | :: hedgehogs and counter, bp Gazgona in control of speed: oc ii.

1: slp for a certain time the speed of the conveyor does not reach for ;; this value, impulses, but the penetration into the detector 5 through the logging element 15 from vg; i have a driving evil 14, overflow the counter 5, and it produces a signal -l execution unit 7 that the conveyor accelerates the glass and the belt speed does not reach the head of the given value.

The work of the channel control .; eko110sti ba) abana ana.chooчngnr: work.; and co1gr () l ei.; onocTH tapes.

D, the process of filling the counter 5 in the control mode of B1 timeplay of the conveyor disperse is obviously deliberately allowed by the enemy;

Iredozhelepnep: z ystpCJYetil) n () 31K) there is a zhit. Tnit conveyor from abt5:; knnogo start-up ned;) liyeTiiMoro reduced speed of the drive elements, caused by overloading of the drive, not 1Hein, not predicted; n I.

P o, p m u l and n 3 about b ete n i

Device dd zangpty HJaxTHorolentochnogo conveyor from non-extras, containing money (1) rattor, tr1nter, nsnolntelny block, uze, 1 ebroea, channels of control of speed, water drum n tapes, including the speed data of the drum and the line, on the same lines, for example, channels, lines, lines, lines, lines, lines, tapes, including a speed sensor the second is the spontaneous E.I. elements, nepBbiii and the second, but more precisely, the p: nnmnulson, about lnchaNIe ee by the fact that. It is not enough to increase the reliability, it is equipped with a master unit, a second decoder, a third logical unit I. And a logical element OR a unit of misaligned units, one input of the executive unit and a second decoder unit, connection with the output of the first receiver, and the other with one of the inputs of the first decoder with an inverted output, I set the Hiero block, the output of which is connected to the inputs of the two other ones, to the two other units) plug-in one nz inputs peo This element is one of the inputs of the reset node, direct output T |;); the go-goer and the output of the control unit are slipped, one KOTojioro input is the first E input; the AND and the other is connected to the Bxo; ioM of the second And element, the output of the third I – i element is connected through the ILR element

with the first counter, inver: the sny output of the trigger is connected to another input of the third element AND, and the output of the first element AND to the input of the element OR.

The source of information taken into account in the examination:

1. USSR author's certificate M 508449, cl. B 65 G 43/04, 03/30/76.

Claims (1)

A device for protecting a mine conveyor belt from overloads, comprising a decoder, a trigger, an actuating unit, a reset unit, speed drum and belt speed control channels, including suitable drum and belt speed sensors, pulse shapers, the first and second logic elements I, the first and second counters pulses, distinguished by that. what. in order to increase the reliability of protection, it is equipped with a replacement unit, a second decoder, a third logical element I., an OR logical element and a slip control unit, one of the inputs of the executive unit being connected to the output of the second decoder, one of which is connected to the output of the first counter, and the Other ...... with one of the inputs of the first decoder and with the inverse time-out output of the current unit, the direct output of which is connected to the inputs of AND elements, one of the inputs is connected to the other two inputs of the executive unit zogo rows per-element, and one of the reset unit inputs direct output trigger and the output of slip control unit, one input of which is connected to the input of the first element II. and the other with the input of the second AND element, the output of the third AND element through the OR element is connected to the first counter, the inverse trigger output is connected to another input of the third AND element, and the output of the first AND element is connected to the input of the OR element.