Torque control system of electric bar plate clamp

Abstract

The invention discloses a system for controlling torsion of an electric slab clamp. The system mainly comprises a clamp body actuating mechanism and an electromotor corresponding to the clamp body actuating mechanism. The system is characterized by also comprising a PLC and a transducer corresponding to the electromotor; the clamp body actuating mechanism is directly connected with a corresponding electromotor shaft; the output end of the PLC is connected to the control input end of the transducer so as to complete the control of output torsion of the transducer; the electric power input end of the transducer is connected with a power supply through a fuse and a contactor; the electric power output end of the transducer is directly connected with the power end of the corresponding electromotor so as to control the rotating direction and the torsion of the electromotor; and the input end of the PLC is connected with an operation control button. The system adopts the transducer to replace a magnetic powder clutch mode of a traditional electric clamp control system, realizes smooth operation of the opening and the closing of the electric slab clamp and accurate control of the clamping force, ensures the safety of the transducer and the electromotor, reduces the factors of damage, reduces failure rate of equipment simultaneously prolongs the service life of the electromotor and mechanical equipment.

Description

technical field [0001] The invention relates to a control of a hoisting device, in particular to a torque control system of an electric slab clamp. Background technique [0002] Electric slab tongs are special lifting equipment for handling slabs, responsible for lifting and stacking slabs in the continuous casting area. The traditional electric clamp control system relies on the magnetic powder clutch added between the motor and the jaws to control the torque of the clamp body. This control method has the following disadvantages: [0003] 1. When the motor starts directly, the starting current is relatively large, which has a large impact on the transmission system; [0004] 2. Because the magnetic powder clutch is affected by the uneven distribution of magnetic powder during the rotation process, the output torque changes greatly, and the control accuracy cannot be guaranteed, which affects the use of the clamp crane; [0005] 3. The temperature on the clamp body is high...

AI Technical Summary

Problems solved by technology

[0003] 1. When the motor starts directly, the starting current is relatively large, which has a large impact on the transmission system;

[0004] 2. Because the magnetic powder clutch is affected by the uneven distribution of magnetic powder during the rotation process, the output torque changes greatly, and the control accuracy cannot be guaranteed, which affects the use of the clamp crane;

[0005] 3. The temperature on the clamp body is high, and the magnetic powder clutch is easily damaged

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