Photoelectric encoding principle based intelligent controller for gear elevator

Abstract

The invention relates to a photoelectric encoding principle based intelligent controller for a gear elevator. By means of the intelligent controller, the problems of low leveling accuracy, large installation and maintenance workloads, high costs, poor safe reliability and the like in existing control schemes are solved. The intelligent controller comprises a power circuit, a programmable logic controller (PLC), a car control circuit, an electromagnetic braking circuit and a status indication circuit. The intelligent controller is characterized in that output ends of the power circuit, a photoelectric encoder, a self-correction circuit, a self-calibration circuit, an out-of-limit protection circuit, a data recording circuit and the car control circuit are connected with the input end of the PLC respectively; the output end of the PLC is connected with input ends of a variable frequency drive circuit, an overload protecting circuit, the electromagnetic braking circuit, the status indication circuit and a general packet radio service (GPRS) communication circuit respectively; the output end of the overload protecting circuit is connected with the input end of a motor; the photoelectric encoder is fixed on a motor shaft of the motor. According to the intelligent controller, the photoelectric encoder is used for controlling the elevator to operate, the system complexity is reduced remarkably, the safe reliability is improved greatly, and installation and maintenance workloads and costs are reduced.

Description

technical field [0001] The invention relates to the technical field of electric control of elevators, in particular to an intelligent controller for gear elevators based on the principle of photoelectric encoding, which is mainly suitable for gear elevators in high towers of gantry cranes, ship loading / unloading machines and other equipment or in mines. Background technique [0002] As we all know, the gear lift is a kind of lifting machine specially designed for the staff to go up and down. The gear lift controller is the core component of the equipment, which is equivalent to the brain or nerve center of the lifting mechanical equipment, and is used to control the operation of the gear lift and realize the equipment. Operation mode control, operation status management and recording, and corresponding safety protection functions. [0003] At present, the commonly used gear elevator controller uses a magnetically sensitive bistable switch for positioning, and at the same tim...

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Problems solved by technology

[0005] The purpose of the present invention is to provide an intelligent controller for gear lifts based on the principle of photoelectric encoding, which fundamentally solves the problems of low leveling accuracy, large installation and maintenance workload, high cost, and poor safety and reliability in the existing control schemes.

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