A device and method for testing the speed of elevator traction machine

Abstract

The invention discloses a device and method for testing the rotating speed of an elevator traction machine. The device includes a base, a bracket is arranged on the base, a beam is arranged on the bracket, one end of the beam is connected to the bracket, and the other end is connected to the shell of the device. , the device housing is provided with a contact assembly, the contact assembly is connected to the device housing through a slide bar; the contact assembly is provided with a guide wheel and a magnetic contact wheel, and the guide wheel and the magnetic contact wheel are connected to the measured traction wheel contact; the magnetic contact wheel is coaxially installed with a rotary encoder; a compression spring is arranged between the contact assembly and the installation shell. The present invention detects the rotational speed of the traction machine by means of a speed-measuring wheel, and realizes the rotational speed of the traction machine under test through the speed-measuring device of the present invention, thereby accurately calculating the rotational speed of the traction machine under test; Defects that are inconvenient to install on site.

Description

technical field [0001] The invention relates to the research field of speed detection in elevators, in particular to a device and method for testing the rotating speed of an elevator traction machine. Background technique [0002] The speed of the elevator traction machine is one of the main parameters of the elevator operation. The linear speed of the traction machine corresponds to the speed of the elevator car. Controlling the operation of the elevator is realized by controlling the speed of the elevator traction machine, that is, controlling the motor in the traction machine. speed to achieve. Now commonly used elevator traction machine speed control mostly adopts frequency conversion and variable voltage speed regulation method with speed feedback. Since the elevator car is in charge of changing from time to time, the traction machine speed control adopts constant speed control. To achieve constant speed control, it is necessary The instantaneous speed of the traction ...

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Problems solved by technology

[0003] In the detection equipment of the elevator control system detection device and the traction machine detection device, it is necessary to detect the speed of the traction machine. The common method is to install a rotary encoder on the output shaft of the traction machine motor, but this method is limited to experiments. It is not feasible to install a rotary encoder on the output shaft of the traction machine on site for portable on-site inspection equipment. Therefore, other methods are required to detect the speed of the traction machine.

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