Brake motor protector with multiple safety protection functions and implementation method

Abstract

The invention discloses a brake motor protector with multiple safety protection functions and solves the problems in the prior art that a brake motor rectifier module and a brake coil have no state feedback, a wear detection function is only used for brake state monitoring and is not used as a necessary condition for starting or stopping, and potential safety hazards exist. The brake motor protector comprises a motor brake, a brake protector and a brake power supply, wherein the brake protector comprises a brake working condition judgment module, a brake power supply alternating direct current conversion module, a brake coil diagnosis and detection module, a rectification circuit diagnosis module, a comprehensive state feedback module, a wear and switch state detection module and a wear and switch state judgment module. The invention further provides an implementation method for the brake motor protector with the multiple safety protection functions. According to the brake motor protector with the multiple safety protection functions and the implementation method, the rectifier module state and the motor brake wear state are used as safety necessary inspection items, and the motor brake wear state is fed back to a control system, so that maintenance personnel can perform accurate maintenance conveniently.

Description

technical field [0001] The invention relates to the technical field of motor protection, in particular to a brake motor protector with multiple safety protection functions and a realization method. Background technique [0002] As a power device widely used in production activities, the safe operation of electromagnetic brake motors is the guarantee condition for normal production order. Brake motors are mostly used for potential energy loads, such as hoists, climbing belt conveyors, cranes, etc. These loads require that the motor brake provide a certain holding torque when the equipment stops, so as to ensure that there will be no safety accidents such as falling / sliding slopes after stopping. There are two main forms of braking failure of the brake motor, one is the failure of the brake rectifier module, and the other is the failure of the brake (including wear failure and coil failure). However, in practical applications, whether the rectifier module of the brake motor ...

AI Technical Summary

Problems solved by technology

When the rectifier module fails, the brake is not opened, but the motor is already running normally. At this time, the motor is in a locked-rotor or over-torque state, which can cause the motor to burn out in a short period of time. Such safety accidents have occurred many times in the actual application process.

When the rectifier module is normal but the friction plate of the brake wears abnormally, the wear of the friction plate exceeds the allowable value when the brake motor is powered off, and the brake cannot provide sufficient braking torque, causing safety accidents such as heavy objects falling

[0004] (2) At present, the maintenance of the brake of the brake motor mainly relies on manual clearance detection with a feeler gauge, and it is impossible to accurately and real-time grasp the wear and tear of the brake, so there are certain potential safety hazards

[0005] (3) The brake rectifier module is an electronic product. When it is working, it will generate surge voltage due to the rapid on-off process. Under the conditions of power grid fluctuations and high temperatures, it is very easy to damage the internal module.

However, the brake motor rectifier module and brake coil of this invention have no state feedback, and the wear detection function is only used for brake state monitoring, which is only used as a reminder for daily equipment maintenance, not as a necessary condition for starting or stopping, and there are potential safety hazards

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