CN211696228U - Push rod motor stroke test circuit - Google Patents

Abstract

The utility model relates to a push rod motor stroke test circuit, PLC and touch-sensitive screen are connected, PLC ' S input is connected respectively to corotation switch S1 and reversal switch S2, solid-state relay M0, solid-state relay M1, solid-state relay M2, PLC ' S output is connected respectively to solid-state relay M3 ' S input, push rod motor M ' S both ends are connected respectively to solid-state relay M0 ' S output and solid-state relay M1 ' S output, push rod motor M ' S both ends are connected respectively to solid-state relay M2 ' S output and solid-state relay M3 ' S output, push rod motor M is connected with push rod motor timing trigger circuit electricity, push rod motor timing trigger circuit carries out circular telegram work along with push rod motor M ' S rotation, PLC ' S input is connected to push rod motor. This practical push rod motor stroke test circuit realizes the measurement of stroke through measuring push rod motor positive and negative rotation push rod stroke time, and the test result is directly perceived, and is convenient for judge.

Description

Push rod motor stroke test circuit

Technical Field

The utility model relates to a push rod motor technical field especially relates to a push rod motor stroke test circuit.

Background

The electric push rod is an electric driving device which converts the rotary motion of a motor into the linear reciprocating motion of the push rod, and the working principle is as follows: the motor is decelerated by the gear to drive the pair of screw rod nuts, the rotary motion of the motor is changed into linear motion, the action of the push rod is completed by utilizing the forward and reverse rotation of the motor, and the stroke can be increased or enlarged by changing the length of the arm of force of the lever. Therefore, the push rod motor can be used as an execution machine in various simple or complex process flows so as to realize remote control, centralized control or automatic control.

The stroke of the push rod motor is a very important performance index, and the stroke modes for testing the push rod motor are many, but the existing mode for testing the stroke of the push rod motor has the following two defects: 1. the stroke test precision of the push rod motor is poor, and a larger error exists between the stroke test precision and the actual stroke of the push rod motor, so that the ex-factory quality control of the push rod motor is poorer; 2. because the display parameter of the instrument for testing the stroke of the push rod motor is complex, an operator cannot intuitively judge whether the push rod motor is a qualified product.

Disclosure of Invention

In view of this, the utility model aims at providing a stroke test precision is high and parameter display audio-visual push rod motor stroke test circuit, and whether the operating personnel of being convenient for can judge the push rod motor immediately is qualified product.

In order to achieve the above object, the present invention adopts a stroke testing circuit for a push rod motor, which comprises a PLC, a touch screen, a forward rotation switch S1, a reverse rotation switch S2, a solid state relay M0, a solid state relay M1, a solid state relay M2, a solid state relay M3, a push rod motor M, and a push rod motor timing trigger circuit, wherein the PLC is connected to the touch screen, the forward rotation switch S1 and the reverse rotation switch S2 are respectively connected to an input end of the PLC, an input end of the solid state relay M0, an input end of the solid state relay M1, an input end of the solid state relay M2, and an input end of the solid state relay M3 are respectively connected to an output end of the PLC, an output end of the solid state relay M0 and an output end of the solid state relay M1 are respectively connected to two ends of the push rod motor M, an output end of the solid state relay M2 and an output end of the solid, the push rod motor timing trigger circuit is electrified to work along with the rotation of the push rod motor M, and the output end of the push rod motor timing trigger circuit is connected with the input end of the PLC.

The stroke test circuit of the push rod motor has the following test modes: an operator presses a forward rotation switch S1, the PLC controls a solid state relay M0 and a solid state relay M1 to work, a push rod motor M works in forward rotation, meanwhile, a push rod motor timing trigger circuit is powered on and outputs an optical coupling signal to the PLC, the PLC starts timing from zero after receiving the optical coupling signal, the PLC stops timing until the stroke of the push rod motor M is in place (after the push rod rotates in place, a stroke switch inside the push rod motor M is disconnected), meanwhile, the push rod motor timing trigger circuit stops working and stops outputting the optical coupling signal to the PLC, the timer inside the PLC stops timing, the timing time of the timer is obtained, namely, the time required by the push rod stroke when the push rod motor rotates in forward rotation is obtained, the time required by the push rod stroke when the push rod motor rotates in reverse rotation can be obtained in the same way, and the. The push rod motors with different specifications have different push rod moving speeds, according to the principle that T (time) is S (stroke)/V (push rod moving speed), when the stroke of the push rod motor with a certain specification (the push rod moving speed is a fixed value) is measured, whether the push rod motor is a qualified product can be judged actually through measuring the time required by the stroke of the push rod motor, and therefore an operator judges whether the stroke of the push rod motor belongs to a qualified interval according to the time required by the forward rotation push rod stroke of the push rod motor and the time required by the reverse rotation push rod stroke of the push rod motor which are displayed on a touch screen. The push rod motor stroke test circuit measures the push rod motor forward and reverse push rod stroke time by taking the PLC as a control core, has the advantages of accurate control and quick response time, and ensures that the measured data and the actual error are small, and an operator only judges whether the push rod motor forward and reverse push rod stroke time belongs to the qualified interval of the push rod motor stroke of the specification, so that the test result is visual and convenient to judge.

The utility model discloses further set up to push rod motor timing trigger circuit and include resistance R1, resistance R2, diode D1 and normally open type opto-coupler relay M4, resistance R2, diode D1, opto-coupler relay M4 input are established ties in proper order, and resistance R1 'S both ends are connected respectively to the one end of resistance R2 and the one end of opto-coupler relay M4 input, push rod motor M is connected to the one end of resistance R1, PLC' S input is connected to the normally open contact S3 of opto-coupler relay M4 output.

The push rod motor timing trigger circuit adopts the optocoupler relay to realize the response of the work of the push rod motor M, the optocoupler relay has no mechanical contact, the service life is long, the advantage of high-speed switching is realized, and the measurement error of the stroke time of the forward and reverse rotating push rod of the motor can be reduced.

The utility model discloses further set up to push rod motor stroke test circuit still includes voltmeter V, voltmeter V connects in parallel at push rod motor M's both ends.

The utility model discloses further set up to push rod motor timing trigger circuit still includes ampere meter A, ampere meter A is connected with resistance R1's the other end.

The voltmeter V is used for measuring the voltage at the two ends of the push rod motor M, the ammeter a is used for measuring the current passing through the push rod motor M, and both are used for protecting the push rod motor M in the test process.

The utility model discloses further set up to push rod motor stroke test circuit still includes switching power supply U1, switching power supply U1 output 24V direct current voltage, switching power supply U1 is PLC, solid-state relay M0, solid-state relay M1, solid-state relay M2, solid-state relay M3, push rod motor timing trigger circuit respectively and provides operating voltage.

The utility model is further provided with a PLC and a touch screen which use a touch screen PLC integrated machine with the model number of EX2N-43H-20 MT.

The utility model that further sets up to opto-coupler relay M4 is AWQ610 EH.

The touch screen PLC all-in-one machine is high in integration level, and installation cost of equipment can be saved.

Drawings

Fig. 1 is an electrical control schematic diagram according to an embodiment of the present invention.

Fig. 2 is an electrical control schematic diagram according to an embodiment of the present invention.

Fig. 3 is an electrical schematic diagram of a timing trigger circuit of the push rod motor according to the embodiment of the present invention.

Detailed Description

As shown in fig. 1-3, the utility model relates to a push rod motor stroke test circuit, which comprises a PLC, a touch screen, a forward switch S1, a reverse switch S2, a solid relay M0, a solid relay M1, a solid relay M2, a solid relay M3, a push rod motor M, a push rod motor timing trigger circuit, a voltmeter V, and a switch power supply U1, wherein the PLC and the touch screen use a touch screen PLC integrated machine, the model of which is EX2N-43H-20MT, the PLC integrated machine and the switch power supply U1 are respectively connected with an external ac power supply, the forward switch S1 and the reverse switch S2 are respectively connected with the input end of the PLC, the input end of the solid relay M0, the input end of the solid relay M1, the input end of the solid relay M2, and the input end of the solid relay M3 are respectively connected with the output end of the PLC, the output end of the solid relay M0 and the output end of the solid relay M1 are respectively, the output of solid-state relay M2 and the output of solid-state relay M3 connect the both ends of push rod motor M respectively, voltmeter V connects in parallel at the both ends of push rod motor M, push rod motor M is connected with push rod motor timing trigger circuit electricity, and push rod motor timing trigger circuit carries out circular telegram work along with push rod motor M's rotation, PLC's input is connected to push rod motor timing trigger circuit's output, switching power supply U1 outputs 24V direct current voltage, switching power supply U1 provides operating voltage for PLC, solid-state relay M0, solid-state relay M1, solid-state relay M2, solid-state relay M3, push rod motor timing trigger circuit respectively.

As shown in fig. 3, the push rod motor timing trigger circuit includes a resistor R1, a resistor R2, a diode D1, an ammeter a and a normally open optocoupler relay M4, the model of the optocoupler relay M4 is AWQ610EH, the input ends of the resistor R2, the diode D1 and the optocoupler relay M4 are sequentially connected in series, one end of a resistor R2 and one end of the input end of the optocoupler relay M4 are respectively connected with two ends of a resistor R1, one end of the resistor R1 is connected with the push rod motor M, a normally open contact S3 at the output end of the optocoupler relay M4 is connected with the input end of the PLC, and the ammeter a is connected with the other end of the resistor R1.

According to the above embodiment, the utility model discloses push rod motor stroke test circuit carries out the stroke test to the push rod motor of a certain specification, and its operating mode is as follows:

1. an operator presses a forward rotation switch S1, the PLC controls a solid state relay M0 and a solid state relay M1 to work, a push rod motor M rotates forwards, meanwhile, a push rod motor timing trigger circuit obtains electricity to work and outputs an optical coupling signal to the PLC, the PLC receives the optical coupling signal and then starts timing by an internal timer from zero, the PLC stops rotating after the stroke of the push rod motor M is in place (after the push rod rotates forwards in place, a front travel switch in the push rod motor M is disconnected), meanwhile, the push rod motor timing trigger circuit stops working and stops outputting the optical coupling signal to the PLC, the internal timer of the PLC stops timing, and the timing time of the timer is obtained, namely the time required by the stroke of the push rod when the push rod motor rotates forwards;

2. an operator presses the forward switch S2, the PLC controls the solid-state relay M2 and the solid-state relay M3 to work, the push rod motor M rotates reversely, meanwhile, the push rod motor timing trigger circuit obtains electricity to work and outputs an optical coupling signal to the PLC, the PLC receives the optical coupling signal and then starts timing from zero, the PLC stops timing until the stroke of the push rod motor M is reset and stops rotating (after the push rod rotates reversely and resets, a rear travel switch inside the push rod motor M is disconnected), meanwhile, the push rod motor timing trigger circuit stops working and stops outputting the optical coupling signal to the PLC, the timer inside the PLC stops timing, the timing time of the timer is obtained, and the time required by the stroke of the push rod is obtained when the push rod motor rotates reversely.

3. And judging whether the push rod motor belongs to the qualified interval of the push rod motor of the specification or not by an operator according to the time required by the push rod motor to rotate the push rod in the forward direction and the time required by the push rod motor to rotate the push rod in the reverse direction, which are displayed on the touch screen.

Claims (7)

1. The utility model provides a push rod motor stroke test circuit which characterized in that: the PLC is connected with the touch screen, the forward rotation switch S1, the reverse rotation switch S2, the solid state relay M0, the solid state relay M1, the solid state relay M2, the solid state relay M3, the push rod motor M and the push rod motor timing trigger circuit are respectively connected with the input end of the PLC, the forward rotation switch S1 and the reverse rotation switch S2 are respectively connected with the input end of the PLC, the input end of the solid state relay M0, the input end of the solid state relay M1, the input end of the solid state relay M2 and the input end of the solid state relay M3 are respectively connected with the output end of the PLC, the output end of the solid state relay M0 and the output end of the solid state relay M1 are respectively connected with the two ends of the push rod motor M, the output end of the solid state relay M2 and the output end of the solid state relay M3 are respectively connected with the two ends of the push rod motor M, the, the output end of the push rod motor timing trigger loop is connected with the input end of the PLC.

2. The stroke test circuit of the push rod motor according to claim 1, wherein: the push rod motor timing trigger circuit comprises a resistor R1, a resistor R2, a diode D1 and a normally-open type optocoupler relay M4, wherein the resistor R2, the diode D1 and the optocoupler relay M4 input end are sequentially connected in series, one end of the resistor R2 and one end of the optocoupler relay M4 input end are respectively connected with two ends of a resistor R1, one end of the resistor R1 is connected with a push rod motor M, and the normally-open contact S3 at the output end of the optocoupler relay M4 is connected with the input end of a PLC.

3. The stroke test circuit of the push rod motor according to claim 1 or 2, wherein: the push rod motor stroke test circuit further comprises a voltmeter V, and the voltmeter V is connected at two ends of the push rod motor M in parallel.

4. The stroke test circuit of the push rod motor according to claim 2, wherein: the push rod motor timing trigger circuit further comprises an ammeter A, and the ammeter A is connected with the other end of the resistor R1.

5. The stroke test circuit of the push rod motor according to claim 1, 2 or 4, wherein: the stroke test circuit of the push rod motor further comprises a switch power supply U1, the switch power supply U1 outputs 24V direct-current voltage, and the switch power supply U1 provides working voltage for a PLC, a solid-state relay M0, a solid-state relay M1, a solid-state relay M2, a solid-state relay M3 and a push rod motor timing trigger circuit respectively.

6. The stroke test circuit of the push rod motor according to claim 1, 2 or 4, wherein: the PLC and the touch screen are integrated touch screen PLC machines, and the models of the touch screen PLC machines are EX2N-43H-20 MT.

7. The stroke test circuit of the push rod motor according to claim 2 or 4, wherein: the type of the optocoupler relay M4 is AWQ610 EH.

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