Closed-loop safety control system of ship loader
A technology of safety control and ship loader, applied in general control system, control/regulation system, program control, etc., can solve problems such as potential safety hazards, large potential energy load, etc., and achieve the goal of improving safety, ensuring stability, and ensuring speed Effect
Inactive Publication Date: 2015-03-18
袁洪平
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Problems solved by technology
[0002] With the development of ship transportation, port equipment has also been continuously improved. Ship loaders are widely used in port operations. Specialized continuous ship loading machinery with flexible unloading and other functions. Each ship loader arm frame telescopic mechanism is equipped with 2 sets of drive systems, which are respectively installed on both sides of the ship loader outer arm frame. Components such as gears and racks drive the inner boom to extend and retract. The total mass of the telescopic boom of the ship loader is about 120t, and there is a large and variable potential energy load during operation, so that in actual operation, the system There are certain security risks
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[0008] Such as figure 1 A closed-loop safety control system for a ship loader is shown, including PLC, frequency converter drive, motor and encoder installed on the motor. The signal output terminal of PLC is connected with the signal input terminal of the frequency converter drive unit, and the frequency converter drive unit The signal output end of the encoder is connected to the motor, the signal output end of the encoder is connected to the signal input end of the PLC, and the encoder is an incremental dual-channel rotary encoder.
[0009] When the present invention works, the system sends instructions to the frequency converter drive unit through the PLC, and the frequency converter drive unit outputs control signals to the motor according to the command, and at the same time, the feedback signal used to detect the output speed of the motor by the encoder is used to control the PLC. Under the influence of disturbance load, when the controlled quantity deviates from the gi...
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The invention discloses a closed-loop safety control system of a ship loader in the field of port shipment equipment. The closed-loop safety control system comprises a PLC (Programmable Logic Controller), a frequency converter driving unit, an electromotor and an encoder arranged on the electromotor, wherein the signal output end of the PLC is connected with the signal input end of the frequency converter driving unit, the signal output end of the frequency converter driving unit is connected with the electromotor, and the signal output end of the encoder is connected with the signal input end of the PLC. According to the closed-loop safety control system, the rotating speed of the electromotor can be detected by using the encoder, and thus the rotating speed stability of the electromotor can be ensured, and the operating safety of a ship loader driving system is improved. The closed-loop safety control system can be applied to the ship loader.
Description
technical field [0001] The invention relates to a port ship loading equipment, in particular to a ship loading machine. Background technique [0002] With the development of ship transportation, port equipment has also been continuously improved. Ship loaders are widely used in port operations. Specialized continuous ship loading machinery with flexible unloading and other functions. Each ship loader arm frame telescopic mechanism is equipped with 2 sets of drive systems, which are respectively installed on both sides of the ship loader outer arm frame. Components such as gears and racks drive the inner boom to extend and retract. The total mass of the telescopic boom of the ship loader is about 120t, and there is a large and variable potential energy load during operation, so that in actual operation, the system There are certain security risks. Contents of the invention [0003] The purpose of the present invention is to provide a closed-loop safety control system for ...
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IPC IPC(8): G05B19/05B65G67/60
CPCG05B19/058B65G67/60
Inventor 袁洪平
Owner 袁洪平