SU662914A1 - Device for measuring microswitch drive element running - Google Patents

Description

The invention relates to electrical parts and can be used to control the mechanical parameters of microswitches. There are known devices for measuring the movements of the drive element of a microswitch of bodies containing a rod acting on the drive element of a microswitch through contact and limit force sensors, and the movement of the rod is transmitted to the lightest reading device 1. Also known are devices for measuring drives of a drive element of the microswitch containing an electric motor connected to the rod through a drive, a limit switch, sensors of ultimate force and contact installed with the possibility of interaction with the mic ovyklyuchatelem, Conn chennal through polarized relay input counting module electrically associated with the electric motor through the reverse unit which electrically. associated with a limit force sensor 2. However, the known devices do not provide sufficient accuracy of measurement and have a low productivity. :: The purpose of the invention is to improve the measurement accuracy and. device performance. This is achieved by the fact that the proposed device for measuring the strokes of the microswitch drive element is equipped with a clock pulse generator, a stepper motor is used and electrically connected through a reverse unit to a clock pulse generator, which is electrically connected with the counting unit. In the drawing, the Dana scheme is described by the .go device. The device comprises a housing 1, a rod 2, an actuator 3, a stepper motor 4, sensors 5 for limiting force and contact, made in the form of an electronic, in particular, mechatronic, dynamometer with a pressure element b,. 7, polarized relay B, limit switch 9, reversal unit 10, comparison unit 11, counting unit 12, counters 13–15 for direct, additional, and differential strokes, respectively, and a generator of 16 clock pulses. A clip is set in clip 7; reader 17, which is monitored. The device works as follows.

When starting manually (command a), the clock pulses from the generator 16 begin to flow to the counting unit 12 directly, and to the stepping motor 4 through the unit 10 of the reverse. The stepping motor 4 moves the rod 2 upwards, which through the pressure element 6 enters into contact with the drive element of the microswitch 17 and further presses it. .,,,

Contact force P, pressure - 10 leg of element b. With the microswitch actuator 17, coming in the form of an electrical signal from electropne dynamometer 1 5 to the comparison block 11, the latter is formed in the form of the 15 command b, arriving at the counting unit 12 and bTKjpErBaibHieJf the arrival of counting pulses from the 16TB pulse pulses to the counter 13 13 counts to the counter ,

After reaching the direct Pfj trigger 20 (the microswitch 17 triggers directly, received by a command in the microswitch removed from the contacts. This command passes the counting unit 12 through the polarized relay 8, which by this command stops the counting impulses to the counter 13 of the forward stroke and the CI in 14 additional stroke, which draws them up to the command z., transmitted from the second output of the comparison unit after the electronic dynamometer 5 reaches the limiting force P, at the same time the command Z enters into 10 for reversing that first 35 reverses the direction of rotation electro saagovogo; schvitatel 4..

During the return stroke of the rod 2, started after the reversing of the stepper motor 4, the microswitch 7 trips back-40 goe and through the polarized relay 8 command 9 is sent to the counting unit 12, which opens the flow of counting pulses into the counter 15 of the differential stroke 45 and through the reverse unit 10 re-reverses the direction of rotation of the stepper motor 4. As a result, the rod 2 re-presses the JQ microswitch 17 until the secondary direct actuation, at which the command

e, coming from the contacts of the microswitch to the counting unit 12, which on this command stops the arrival of the counting pulses in the counter 15 of the differential stroke. At the same time, on the command e removed from the counting unit, through the reverse unit for the third time, the direction of rotation of the stepping motor 4 is reversed and the microswitch 17 is restarted.

Stem 2, lowering down, actuates the limit switch 9, which gives a command to block 10 of the reverse, stopping the movement of the attachment motor 4 upon this command. As a result, the functional circuit comes to its initial state, and in the counters 13-15, the digital values of the direct, additional, and differential strokes are stored until the next command, Start, which covers the counters.

Claims (2)

1. Journal of Aviation Industry. Device for testing microswitches. 1968, No. 8, with. 95-99,. . 2. Authors certificate of the USSR 229639, cl. G01 19/14, 1967. y- 7 Jje DC /five f g 7TF / g i.e. IE y l SP " , well . 7tf X "