Automatic detection and control method for braking force of elevator

Abstract

The invention discloses an automatic detection and control method for braking force of an elevator, which belongs to the field of elevator control and brake technologies. The automatic detection and control method comprises the following steps of: successively detecting each group of brakes when the elevator is in the dormant state and reaches detection time; and when the detected brake is braked, determining that the group of brakes fails when a lift car displaces, then giving out a fault signal, and stopping using the elevator. The automatic detection and control method has the advantages that the braking force situation of the elevator is convenient to detect, faults can be removed in time, and the elevator is guaranteed to safely and reliably operate. Variation on a control system is small, and therefore the automatic detection and control method is easy to operate. The special parameter of the elevator does not need to be input, which is simple and effective, and the popularity of the control system is wider.

Description

technical field [0001] The invention belongs to the technical field of elevator control and braking, and in particular relates to an automatic detection and control method of elevator braking force . Background technique [0002] With the increase of high-rise buildings in cities, elevators are increasingly entering people's lives and becoming an indispensable part of urban life. But in recent years, frequently hear the occurrence of elevator accidents. Some experts have analyzed the accidents of vertical elevators. Among them, 80% of the passenger casualties are caused by the extrusion and shearing of the car door area, 15% are caused by the car's rushing to the top and squatting at the bottom, and the others are 5%. The main factors that lead to extrusion, shearing, top rushing, and squatting are the failure of the electronic control system and brakes. Insufficient braking force or brake failure is the main cause of brake failure, and it is also one of the factors cau...

AI Technical Summary

Problems solved by technology

[0003] In view of the above problems, someone has come up with a method for testing whether the elevator braking force is sufficient when the elevator is in a dormant state, as disclosed in the Chinese invention patent authorization announcement number CN101269770B The name is "A Method for Realizing Motor Brake Force Detection". Although this method can ensure the safety of the system operation and hardware and detect brake failures in time, this method has a large change in the control system and requires more input. The specific parameters of the parameters are more complicated and cannot be used universally

Images