CN213600839U

CN213600839U - Motor performance consistency testing device for elevator door motor

Info

Publication number: CN213600839U
Application number: CN202022111675.7U
Authority: CN
Inventors: 张今朝; 朱海燕
Original assignee: Jiaxing University
Current assignee: Jiaxing University
Priority date: 2020-09-24
Filing date: 2020-09-24
Publication date: 2021-07-02
Anticipated expiration: 2030-09-24

Abstract

The utility model discloses a performance consistency testing device for an elevator door motor.A tested motor is connected with a first driving module and a first controller in sequence; the reference motor is sequentially connected with the second driving module and the second control module; the PLC is respectively connected with the first controller and the second controller; the three-phase alternating current power supply is connected with the PLC; the PLC is also connected with an upper computer. The utility model discloses simple structure can test being surveyed the motor and referring to the motor simultaneously or respectively, again to being installed the inertia piece on being surveyed the motor and referring to the motor and testing, judges the data that will obtain, just can reach whether reliable by being surveyed the motor, whether need change, has reduced the emergence of elevator accident.

Description

Motor performance consistency testing device for elevator door motor

Technical Field

The utility model relates to a testing arrangement of elevator part especially relates to motor performance uniformity testing arrangement for lift-cabin door machine.

Background

With the development of urban high-rise buildings, elevators are more and more widely applied, and as a typical special device, the operation condition of the elevator relates to the traffic safety of public places. The elevator door machine is a mechanism responsible for opening and closing the elevator door, and when the elevator door machine receives an elevator opening and closing signal, the elevator door machine controls a door opening motor through a self-contained control system, so that the moment generated by the motor is converted into a force in a specific direction to close or open the door; therefore, the requirements for quick response capability and performance reliability are very high. How to have a more accurate detection method for the running state of the elevator when the elevator is overhauled regularly is very important. At present, the running state and the function of the motor of the elevator door motor are only tested in a basic form, and no further deep technical method is provided for the consistency detection of the running state.

Disclosure of Invention

Based on the problem, an object of the utility model is to provide a testing arrangement of motor performance uniformity for lift-cabin door machine compares through the inertia, and after the test motor used for a long time, whether its running state had taken place the change, can in time test out the reliability and the uniformity of motor, reduced the emergence of elevator accident.

The technical scheme is as follows:

a testing device for motor performance consistency of an elevator door machine comprises a tested motor, a reference motor, a three-phase alternating current power supply, a PLC, a first controller, a second controller, a first driving module and a second driving module; the tested motor is sequentially connected with the first driving module and the first controller; the reference motor is sequentially connected with the second driving module and the second control module; the PLC is respectively connected with the first controller and the second controller; the three-phase alternating current power supply is connected with the PLC; the PLC is also connected with an upper computer;

the motor rotor shaft of the tested motor is provided with a first inertia block; and a motor rotor shaft of the reference motor is provided with a second inertia block.

Furthermore, the model of the tested motor is the same as or different from that of the reference motor.

Further, the first inertia block and the second inertia block are the same, and inertia of the first inertia block and the second inertia block is 2-5 times of rotor inertia of the reference motor.

The utility model discloses simple structure, simple to operate can be controlled simultaneously or respectively to being surveyed motor and reference motor through the host computer. The types of the test motor and the reference motor can be the same or different, but during testing, the output torque or the initial value of the rotating speed of the reference motor needs to be debugged to be consistent with the tested motor. The first controller and the first driving module control the motion of the tested motor; the second controller and the second drive module control movement of the reference motor. The first controller and the second controller are of the same structure; the first driving module and the second driving module are the same driving module.

The test procedure was as follows:

step 1, when the tested motor and the reference motor are not provided with inertia blocks, adding 10% rated current (or torque) to the tested motor and the reference motor to start in a no-load mode, regularly rotating forward and backward within 15 seconds, recording time waveforms from starting to peak values of forward and backward rotating speeds of the two motors, and obtaining the rotating speeds and the time waveforms of the tested motor and the reference motor respectively; wherein, the tested motor is not used, and the obtained waveform is the waveform of the first test; the tested motor and the reference motor can be of the same type or different types;

step 2, subtracting the two waveforms based on the waveform of the detected motor and the waveform of the reference motor obtained in the step 1 to obtain the waveform of the rotation speed difference and the time;

step 3, calculating the relative deviation value, the minimum deviation value and the maximum deviation value (including positive and negative values) of the rotating speeds of the tested motor and the reference motor within 15 seconds when the air load rotates positively and reversely in the step 1, and making backup so as to compare the rotation speeds of the tested motor and the reference motor during later-stage re-detection;

the relative deviation value is within a specified time, and for convenience of calculation, the sampling frequency is 5 times of the frequency of the motor driving power supply during collection, so that the relative deviation value is obtained; the maximum amplitude and the minimum amplitude correspond to the points, and the corresponding values are the maximum deviation value and the minimum deviation value.

Step 4, the tested motor is provided with a first inertia block, the reference motor is provided with a second inertia block, 30% rated current (or torque) is added to the two motors at the same time, the motors are started with the inertia blocks, positive and negative rotation is carried out within 15 seconds at regular time, the positive and negative rotation speed waveforms of the two motors from starting to peak value are recorded, and the rotation speed and the time waveforms of the tested motor and the reference motor are obtained;

step 5, subtracting the two waveforms obtained in the step 4 by the method in the step 2 to obtain the rotating speed difference and the time waveform under the load;

step 6, calculating the relative deviation value, the minimum deviation value and the maximum deviation value (including positive and negative values) of the rotating speed of the tested motor and the reference motor within 15 seconds when the load rotates positively and negatively in the step 4, and performing backup so as to compare the rotation speed of the tested motor with the rotation speed of the reference motor during later-stage re-detection;

the relative deviation value is within a specified time, and for convenience of calculation, the sampling frequency is 5 times of the frequency of the motor driving power supply during collection, so that the relative deviation value is obtained; the points corresponding to the maximum amplitude and the minimum amplitude have the corresponding values of the maximum deviation value and the minimum deviation value;

step 7, comparing the waveform or relative deviation value, the minimum deviation value and the maximum deviation value of the tested motor with the backed-up data according to the steps 1 to 6, and obtaining the performance change condition of the motor after being used for a period of time; the motor to be tested is a motor which is arranged in an elevator door motor and used for a period of time.

According to the use process, when the measured motor and the reference motor run synchronously, and the rotating speed of the reference motor crosses the zero point, when the average rotating speed difference value of the measured motor and the reference motor exceeds 10% of the highest rotating speed, the performance difference of the rotating speeds of the measured motor and the reference motor is large; when the average deviation of the rotation speed measured for the Nth time exceeds 0.5 times of the average deviation of the rotation speed measured for the first time, the performance of the measured motor is obviously attenuated, and meanwhile, the variation of the maximum deviation value and the minimum deviation value is referred to, if the variation of the maximum deviation value and the variation of the minimum deviation value are increased, the reliability of the measured motor is reduced, and the measured motor needs to be overhauled or replaced.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a circuit diagram of the control and driving of the present invention;

fig. 3 is a schematic structural diagram of the first inertia block installed on the measured motor of the present invention.

Detailed Description

The present invention will be described in further detail by way of examples with reference to the accompanying drawings, which are illustrative of the present invention and are not intended to limit the present invention.

Referring to fig. 1 to 3, a device for testing the performance consistency of a motor for an elevator door machine includes a motor 1 to be tested, a reference motor 2, a three-phase ac power supply 8, a PLC9, a first controller 4, a second controller 6, a first driving module 3, and a second driving module 5; the tested motor 1 is sequentially connected with a first driving module 3 and a first controller 4; the reference motor 2 is sequentially connected with a second driving module 5 and a second control module 6; the PLC9 is respectively connected with the first controller 4 and the second controller 6; the three-phase alternating current power supply 8 is connected with the PLC 9; the PLC9 is also connected with an upper computer 7; the model of the tested motor is the same as or different from that of the reference motor. The first driving module is the same as the second driving module, and an IR21365 driving chip is adopted; the first controller and the second controller are the same, and MC56F8323 is used.

A motor rotor shaft 12 of the tested motor 1 is provided with a first inertia block 11; the reference motor has the same structure as that shown in fig. 3 with a second inertia block on a motor rotor shaft. The first inertia block 11 and the second inertia block are the same, and inertia of the first inertia block and the second inertia block is 2-5 times of that of a rotor of the reference motor.

Claims

1. A motor performance consistency testing device for an elevator door machine is characterized by comprising a tested motor, a reference motor, a three-phase alternating current power supply, a PLC, a first controller, a second controller, a first driving module and a second driving module; the tested motor is sequentially connected with the first driving module and the first controller; the reference motor is sequentially connected with the second driving module and the second control module; the PLC is respectively connected with the first controller and the second controller; the three-phase alternating current power supply is connected with the PLC; the PLC is also connected with an upper computer;

2. The device for testing the motor performance consistency of an elevator door machine according to claim 1, wherein the model of the motor to be tested is the same as or different from that of the reference motor.

3. The device of claim 1, wherein the first inertia block and the second inertia block are the same, and the inertia of the first inertia block and the second inertia block is 2-5 times of the inertia of the rotor of the reference motor.

4. The device for testing the motor performance consistency of the elevator door machine according to claim 1, wherein the first controller and the second controller have the same structure; the first driving module and the second driving module are the same driving module.