Control method and control system of digital intelligent crane and crane controller

Abstract

The invention discloses a control method and a control system of a digital intelligent crane and a crane controller. A control manner of combining switching amount control and communication control is adopted. The control method adopts the control manner of combining the switching amount control and the communication control; according to the switching amount control manner, a motor is controlled to rotate forwards and backwards through an external switching amount input interface, a communication address is not needed and gear shifting operation cannot be carried out temporarily; according to the communication control manner, forward rotation and backward rotation are controlled through an RS485 bus, and communication addresses on the bus are not repeated; and a resistance box needs to be connected in the two control manners so as to prevent a solid-state relay from being impacted by large current caused by directly starting the motor, so that the fault rate is reduced and the crane can work normally. Furthermore, the invention discloses the crane controller; the controller can commonly use one power supply and one microprocessor, so that the line of a multi-quadrantal crane is simple and the cost is low.

Description

technical field [0001] The invention relates to the technical field of crane control, and more specifically relates to a control method, a control system and a crane controller of a digital intelligent crane. Background technique [0002] With the continuous development of existing industries, cranes have become a very widely used mechanical equipment in industrial and mining enterprises, such as mining, metallurgy, carbon refining, cement and electric power industries. Specifically, cranes are mechanical equipment used for lifting, transporting, loading, unloading, and installing materials. [0003] The traditional crane control method is composed of contactors, mechanical buttons and other devices. The current crane control is mainly used to realize the on-off and forward and reverse rotation of the motor. It mainly uses a wound AC asynchronous motor. Speed, using cam controller, relay-contactor control, with the continuous development of intelligence, this traditional el...

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Problems solved by technology

[0003] The traditional crane control method is composed of contactors, mechanical buttons and other devices. The current crane control is mainly used to realize the on-off and forward and reverse rotation of the motor. It mainly uses a wound AC asynchronous motor. Speed, using cam controller, relay-contactor control, with the continuous development of intelligence, this traditional electrical control method has been unable to meet the development direction of intelligent cranes, its main disadvantages are: relay-contactor control in frequent In the case of switching, the impact current is large, resulting in burning of contacts, fire of brushes, burning and breaking of resistors connected to the motor and rotor, and the failure rate is very high, which affects the normal operation of the crane.

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