Portable elevator speed limiter detection device and detection method for elevator speed limiter

Abstract

The invention relates to a portable elevator speed limiter detection device and a detection method for an elevator speed limiter. A singlechip system is used for controlling an alternating-current servo motor, a drive wheel is driven to rotate according to a set acceleration, and the drive wheel drives a wheel disc of the elevator speed limiter to be detected to rotate to ensure that a linear speed of a pitch circle of the wheel disk of the speed limiter gradually raises; and the singlechip is used for receiving a pulse signal of one magnetic steel at the end face of the wheel disc of the speed limiter through a Hall switch, and the diameter of the pitch circle of the wheel disc of the speed limiter is combined so that the linear speed of the pitch circle of the wheel disc of the speed limiter can be calculated. When the singlechip controls the alternating-current servo motor to continuously accelerate, the rotating speed of the wheel disc of the speed limiter is higher and higher; and finally, the speed limiter generates limit action due to centrifugal force action, the wheel disc is blocked, and the singlechip locks the linear speed at the instant action of the speed limiter, thus the linear speed is a measurement result. The portable elevator speed limiter detection device has the advantages of reasonable structure design, high efficiency and good effect, and is simple and quick in operation.

Description

technical field [0001] The invention relates to a portable elevator speed governor detection device and a detection method for the elevator speed governor. Background technique [0002] In modern society, elevators, as a means of vertical transportation, play an increasingly important role in people's work and life, and their safety has attracted more and more attention. The elevator speed limiter is the most critical safety guarantee component in the passenger-carrying elevator. Its working principle is that when the elevator slides down at a high speed in an unexpected situation, once the car speed reaches the maximum value set by the speed limiter, the speed limiter will Drive the safety gear to stop or decelerate the elevator, so as to ensure safe operation and avoid accidents. Therefore, the detection of the elevator speed limiter is an important inspection item related to the safety of passengers and goods on the elevator. The General Administration of Quality Superv...

AI Technical Summary

Problems solved by technology

[0006] 1. There are many parts used, many connecting cables, many connectors, time-consuming plugging and unplugging, the connectors are fragile, and the reliability of the device is poor.

[0007] 2. The photoelectric encoder with speed measuring wheel relies on the floor-standing bracket, which is difficult to place on site, and cannot reliably keep in contact with the outer edge of the speed limiter wheel. When the speed limiter wheel rotates at high speed, the speed of the photoelectric encoder cannot be measured allow

[0008] 3. The installation of the drive motor is time-consuming. Because the dual-axis motor with the drive wheel contains a transformer and a rectifier drive module, it is bulky and heavy. Adjusting the nut on the tripod cannot ensure the drive wheel and the outer edge of the governor wheel. Good contact; at the same time, because the driving wheel is cylindrical, the friction with the outer edge of the speed limiter wheel is small, and it is easy to slip, so that the linear speed of the driving wheel cannot be accurately transmitted to the speed limiter wheel

[0009] 4. At the testing site, it is inconvenient to measure the pitch circle circumference of the governor wheel

[0010] 5. Using digital tube display, less information, not intuitive

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