Test method for portable elevator speed limiter testing device

Abstract

The test method for the portable elevator speed limiter test device is to install a photoelectric encoder on the speed limiter test device, install a speed measuring wheel on its shaft, press the speed measuring wheel against the outer edge of the speed limiter wheel, and the speed measuring wheel Rotate with the wheel of the speed limiter; set up a double-ended output drive motor, the output shaft at one end is fixed with a driving wheel that presses against the outer circumference of the wheel of the speed limiter, and a photoelectric encoder sensor is installed on the output shaft at the other end; its test method The single-chip signal processing unit receives and processes the speed limiter wheel rotation linear speed signal output by the photoelectric encoder and displays it in real time, receives the speed feedback signal output by the photoelectric encoder sensor for the PID closed-loop control of the motor, and sends it to the motor through the single-chip control system. The rectifier drive module outputs the drive signal for voltage regulation and speed regulation required by the DC drive motor. The test method for the portable elevator speed limiter test device can be used on site, the measurement result is accurate and reliable, and the installation is convenient.

Description

Technical field: [0001] The invention relates to elevator safety detection, in particular to a testing method for a portable elevator speed governor testing device. Background technique: [0002] The speed limiter is an important safety component of the elevator. When the car reaches the specified speed range, the speed limiter will act first, and then the safety gear will be activated to clamp the car on the guide rail, so as to achieve reliable safety protection. . Therefore, the on-site inspection of the speed limiter, especially for the old elevators that have been used for many years, is a necessary inspection item related to personal safety. [0003] Previously, the on-site test of the speed limiter could only be measured with a tachometer. Since there was no power drive device, it could only be done manually or with a traction rope to drive the wheel of the speed limiter to rotate until it moved. Reference document (JP9278308A) discloses a portable elevator speed li...

AI Technical Summary

Problems solved by technology

The speed information obtained by the speed detection part of the speed limiter is not only used as the input information of the motor speed regulation, but also as the detection and display value of the speed limiter wheel rotation line speed, that is, there is only one channel for speed detection, because the speed feedback information and detection information The required detection cycle and accuracy are different, which restricts the stability and test accuracy of the whole machine operation

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