SU631846A1 - Arrangement for testing microswitches for absence of hanging-up of contacts - Google Patents

Description

one

The invention relates to reference measurement technology, and more specifically to devices controlling microswitches. A device for testing microswitches for the absence of contact interlocks is known, which contains a motor with a push rod acting on the microswitch ij.

It is also known a device for testing microswitches, for the absence of contact interlocking, comprising a motor connected to a push rod, installed with the possibility of acting on a microswitch, and storage unit 2,

Known devices have poor performance and test automation.

The purpose of the invention is to increase productivity and automation of verification. For this purpose, devices for checking microswitches for the absence of contact sticking, containing a motor connected to a push rod, installed with the possibility of

a microswitch, a storage unit, equipped with coincidence circuits, a generator of countable pulses, and reversible counters; the outputs of the storage unit are connected to one of the inputs of the matching circuits

The NIN, the second and third inputs are connected to the microswitch contacts, and a quarter of the inputs are connected to the generator of counting pulses, the outputs of two matching circuits are connected to the inputs of one reversible counter, the outputs of the other two matching circuits are connected to the inputs of the other reversible counter.

The storage node contains a sensor

displacement of the pressure rod and the associated motor control circuit n generating signals for the matching circuits.

The drawing shows a diagram of a device for testing microswitches for the absence of contact interruption,

The motor 1 is connected via a screw pair to a pressure device 2, acting on the microbore switch 36 being checked, contacts of which are connected to the power source through load resistance 4.5 with the inputs of the memory node 6, the outputs of the memory node 6 soocinen with one input of the coincidence circuits 7-10 , the second and third inputs of which are connected to the contacts of the microswitch, and the fourth inputs are connected to the generator 11 of counting pulses, and the outputs of the two coincidence circuits are connected to the inputs of one reversing counter 12, The outputs of the two other coincidence circuits are connected to the inputs of the other reversible counter 13. The memory node 6 contains a displacement sensor for the push rod 14 and an associated motor control and signal generation circuit for the coincidence circuits 15, The device operates as follows. The pressure device 2, acting on the drive element of the microplug, moves from the initial position to the direct drive position of the drive element at high speed, the resolving signal from the output of the storage unit 6 is fed to the coincidence circuit 7, during the break of the microswitch electrical circuit to the other (rotary) ) and the third inputs of the coincidence circuit arrive at the enabling signals, and the counting pulses from the generator 11 pass to the input of the reversing counter 12. When the normally open contacts are closed, micro Atel zapominak conductive assembly 6 reverses the motor and the drive element moves on - continued at high speed until srabatyuani reverse position. The enabling signal from the storage unit 6 is fed to the coincidence circuit 9, and the counting pulses during the break of the electrical circuit pass to the input of the reversing counter 13, From the moment of closing the normally open contacts, the storage unit 6 starts the movement count of the drive element, which is remembered at the moment 50

closing normally closed contacts. In this case, the initial direction of rotation of the engine is restored, the storage unit 6 begins to subtract the travel from the closure of the normally closed X contacts from the filled value of the movement of the drive element. For a few microns to direct operation engine speed

a push rod and an associated motor control and signal generation scheme for coincidence circuits.

Sources of information taken into account in the examination:

1. The copyright certificate number 136468, Q 01 R 31/04, 1960.

2. Copy of certificate No. 41О338, Q 01 R 31 / О2, 1969. 6 decreases, the counting pulses during an electrical break through the coincidence circuit 8 are fed to the input of the reversible counter 12. Once the normally open contacts are closed, the motor reverses again its growth rate increases; the storage unit 6 begins to subtract from the memorized value the movement of the drive element from the closure of normally open contacts to the closure of normally closed contacts, the travel from the closure of normally open contacts and not how many microns to reverse work reduces engine speed. The counting pulses during the break of the electric circuit through the coincidence circuit 10 are fed to the input of the addition of the reversible counter 13. Further when the normally closed contacts are closed, the push rod returns to its original position at a higher speed.

Claims (2)

 Claim 1. A device for testing microswitches for the absence of contact interlocks, containing a motor connected to a push rod, installed with the possibility of acting on a microswitch, and a storage node, characterized in that, in order to improve performance and automate testing, it is equipped with a matching circuit , the generator of counting pulses and reversible counters, the outputs of the storage node are connected to one of the inputs of the coincidence circuits, the second and third inputs of which are connected to the contact m of the microswitch, and the fourth inputs are connected to a generator of counting pulses, the outputs of two coincidence circuits are connected to the inputs of one reversible counter, the outputs of the other two coincidence circuits are connected to the inputs of another reversible counter, 2. The device according to claim 1, 1, so that the memory contains a displacement sensor on / THEIR