SU789702A1 - Recorder to pendulum hammer - Google Patents

Description

The invention relates to testing equipment, namely, to registrars of pendulum copers, and can be used in mechanical engineering.

Known registrar pendulum 5 copra, containing a fixed degree scale, a leading arrow, a bounce arrow and a movable scale £ 1].

The registrar's disadvantage is the need to correct readings read from the scale of the device.

Closest to the invention of a technical nature is a recorder for a pendulum driver containing a measuring unit for the phase of the oscillations 15, including a light and a photodetector, a control unit and a vibration counter £ 2j.

However, in the recorder, the measurement process involves calibrating the phase measuring unit 20.

The purpose of the invention is to simplify the device.

This goal is achieved by the fact that the oscillation phase measuring unit is additionally equipped with a illuminator, a photodetector and a disk with holes mounted on the shaft of the copra pendulum. thirty

In addition to totq, the control unit is made in the form of three AND circuits, AND-NOT circuits, the output of the first AND circuit is connected to the meter, and the input to the output of the AND circuit, which is connected by inputs to the counter outputs and the first inputs of the second and third AND circuits, the second inputs of which are connected to the outputs of the counter.

In FIG. 1 is a schematic representation of an oscillation phase measurement unit; in FIG. 2 - block diagram of the registrar; in FIG. 3 - control unit.

The recorder comprises a pendulum shaft 1 with a disk 2 fixed on it, in which there are holes 3 and 4, and the distances from the center of the disk to the centers of the holes 4 and 3 are not equal. The illuminators 5 and photodetectors 6 are located in the alignment with holes 3 and 4. Arrow 7, rigidly mounted on the shaft 1 of the pendulum, together with the fixed scale 8 forms a device for measuring the angle of deviation of the pendulum from the position of stable equilibrium. The photodetectors 6 through the control unit 9 and the division circuit 10 and 11 are connected to the inputs of the counters 12 and 13 with an indication of the breakthrough and bounce angles.

IS the next registrar on block 9

The control unit 9 consists of a binary counter 14, three circuits AND 15, and 18, an AND-16 circuit and two triggers 19 and 20. The input of the binary counter 14 is connected to the output of the first circuit And 15, one of the inputs of which is connected to the output of circuit AND -NOT 16, the first input of which is connected to the first input of the second circuit And 17 and with the single output of the first trigger 19 of the counter 14, the second by the input is connected to the first input of the third, circuit And 18 and with the single output of the second trigger 20 of the counter 14, the inputs of the second circuit And 17 and the third circuit And are connected respectively to the inverse outputs of the triggers account Chick 14, and the third inputs of the second circuit And 17 and the third circuit And 18 are interconnected to supply counting pulses.

The registrar works in a way. ·

The initial state is brought by supplying control, division circuits 10 and 11 and counters 12 and 13 with indication of the pendulum deviation angles during deformation of the sample and rebound pulse Reset (not shown). At the same time, at the single outputs of the binary counter 14, prohibition signals are generated for the passage of the counting pulses in the division circuit 10 and 11. After the pendulum is fixed at a certain angle and then released, it moves towards stable equilibrium, but at the same time, the counting pulses generated by the photodetectors 6 do not pass through the And 17 and 18 circuits due to the Prohibition signals at their inputs. As soon as the hole 4 rises into the target with the illuminator 5 and the photodetector 6, the latter gives a gating pulse to the input of the AND-16 circuit of the control unit 9. The first trigger 19 of the counter 14 goes into a single state and from its output to the circuit And 17 receives an enable signal. The counting pulses through the circuit And 17, the division circuit 10 are fed to the input of the counter 12 with an indication ^. Where the angle of sample deviation is recorded.

After the rotation of the positive equilibrium through the And 15 circuit, a second pulse arrives at the input of the counter 14, which translates :; in a single state, the second trigger 20 of the counter 14 and the first trigger 19 in the zero state. From the output of the second trigger 10 of counter 14, a pendulum is fed in when the pendulum repeatedly passes the set point 55 signal to the input of circuit I 18 of control unit 9, through circuit I 18 and division circuit 11, counting pulses arrive at the input of counter 13 with indication where the bounce angle is recorded. At the same time, an inhibit signal from the first trigger 19 of counter 14 is received at the input of circuit And 17.

After the pendulum passes the point of stable equilibrium for the third time, the gating pulse through the circuit And 15 enters the input of the counter 14 and puts the first trigger 19 of the counter 14 into a single state, which from the inverse output sends a Prohibition signal to the input of the circuit And 18. To the inputs of the circuit AND-NOT 16, two single signals are sent simultaneously from the triggers 19 and 20 of the counter 14. The NAND 16 circuit generates a Prohibition signal, which is fed to the input of the And 15 circuit and the gate pulses do not arrive at the counter input 14. Therefore, with the subsequent pendulum passing the point of stable equilibrium, the information in the counters 12 and 13 with the indication of the angles does not change.

The invention allows to simplify and automate the registration of impact interaction parameters.

Claims (2)

 The invention relates to test equipment, in particular to the registers of a maker pile, and can be applied in mechanical engineering. Known beacon recorder is known, which contains a fixed degree scale, a leading arrow, a rebound arrow, and a movable L1Ji scale. Recorder deficiency is the need to correct readings taken from the device scale. The closest to the invention of the technical essence is a transducer for an interline copra containing a phase measurement unit including an illuminator and a photo receiver, a control unit and a vibration counter 2. However, in the recorder, the measurement process includes the calibration of the phase measurement unit. The purpose of the invention is to simplify the device. This goal is achieved by the fact that the oscillation phase measurement unit is additionally equipped with an illuminator, a photodetector and a disk with holes mounted on the shaft of a copra. In addition, the control unit is made in the form of three AND schemes, the IS-NOT circuit, the output of the first AND circuit is connected to the counter, and the input is connected to the output of the AND-HE circuit, which is connected by inputs to the counter outputs and the first inputs of the second and third AND circuits the second inputs of which are connected to the outputs of the counter. FIG. 1 shows schematically a unit for measuring the phase of oscillations; in fig. 2 - block registrar circuit; in fig. 3 - control unit. The recorder contains a shaft i of the tambourine with a disk 2 fixed on it, in which there are holes 3 and 4, and the distances from the center of the disk to the centers of holes 4 and 3 are not equal. The illuminators 5 and the photodetectors 6 are located in the alignment with holes 3 and 4. The arrow 7, rigidly fixed on the shaft 1 of the pilot, together with the fixed scale 8 forms a device for reading the angle of deviation of the pilot from the polo-stable equilibrium. The photodetectors 6 through the control unit 9 and the dividing circuits 10 and 11 are connected to the inputs of counters 12 and 13 with indication of the overshoot and rebound angles. The control unit 9 consists of a binary counter 14, three circuits AND 15, 17 and 18, cxeNbi AND-NOT 16 and two triggers 19 and 20. The input of the binary counter 14 is connected to the output of the first circuit 15, one of whose inputs is connected to the output cxeivtJ AND-NOT 16, the first input of which is connected to the first input of the second circuit AND 17 and to the single output of the first trigger 19 of the counter 14, the second input to the first input of the third, the circuit 18 and to the single output of the second trigger 20 of the counter 14, inputs the second circuit And 17 and the third circuit And 18 are connected respectively with inverse triggers Meters withstand 14, and the third input of the second AND gate 17 and the third skhegll and 18 are interconnected for supplying enumeration ikvtulsov. The registrar works as follows. The recorder is reset to its initial state by feeding control unit 9, dividing circuits 10 and 11 and counting 12 and 13 with indication of the deviation angles of the sample during sample deformation and rebound pulse (not shown). At the same time, on the single outputs of the binary counter 14, the signals for prohibiting the passage of the counting pulses in the circuit 10 and 11 of the division are forked. After the master is fixed at a certain angle, and then released, he moves towards a steady equilibrium, but there are countable impulses (F, formed by the photo {1mtnnkami not pass through the AND 17 and 18 presence on their input signals) As soon as aperture 4 comes into alignment with illuminators 5 and photodetector 6, the latter issues a strobe pulse to the input of the AND-HI circuit 16 of the control unit 9. The first Timrrep 19 of the counter 14 goes into one state and from its output goes to the AND-17 circuit IGIODIA signal. Counts pulses through the circuit. And 17, the dividing circuit 10 is fed to the input of the counter 12 from the indicator where the registrars of the deviation angle of the sample occur when the sample is deformed. After the return symbol returns to the point of a steady equilibrium again through the circuit I 15 to the input of the counter 14 a second pulse arrives which translates the second trigger 20 of the counter 14 and the first trigger 19 into the zero state. From the output of the second three bars 10 of the counter 14, the enable signal is fed to the input of the AND 18 circuit of the control unit 9, through the AND 18 circuit and circuit dividing circuit 11 th pulse to the input of the counter 13 with the indication where the registration of the angle of rebound. At the same time, the input of the AND 17 circuit receives a prohibition signal from the first trigger 19 of the counter 14. After the stable point passes the stable equilibrium for the third time, the gate pulse through the AND 15 circuit arrives at the input of the counter 14 and converts the first trigger 19 of the counter 14 to the single state, which, from the inverse output, supplies the Inhibit signal to the input of the AND 18 circuit. The inputs cxeMJ AND-NOT 16 simultaneously and simultaneously give two single signals from the flip-flops 19 and 20 of the counter 14. The AND-NOT 16 circuit generates the Ban signal, which is fed to the input of the circuit And 15 and gates impulse There are no entries to the input of the counter 14. Therefore, during the subsequent passage of the stable balance point, the information in the counters 12 and 13 with the indication of the angles does not change. The invention allows to simplify and automate the registration of parameters of the shock interaction. Claim 1. An irradiator recorder for determining impact parameters, comprising an oscillation phase measurement unit including an illuminator and a photoreceiver, a control unit, an oscillation counter, characterized in that, for the sake of simplicity, the oscillation phase measurement unit is additionally equipped with an illuminator, a photodiode and a disk with holes mounted on a shaft of a copra tambour. 2. The recorder according to claim 1, characterized in that the control unit is filled in the form of three AND schemes, AND-NOT scheme, ha: 1 input of the first cxeNU AND connected to the counter, and the input to the output of the AND-NOT scheme, which input is connected to the outputs of the counter and the first inputs of the second and third circuits And, the second inputs are connected to the outputs of the counter. Sources of information taken into account in the examination 1. The author's certificate of the USSR I 178567, cl. G 01 N 3/30, 1962. 2. The patent of Great Britain 1165276, cl. G 01 N 3/50, 1967 (prototype).