Deviation rectification control method of nuclear waste intelligent bridge crane

Abstract

The invention discloses a deviation rectification control method of a nuclear waste intelligent bridge crane, and solves the problem of safe and reliable real-time deviation rectification control of the nuclear waste intelligent bridge crane under the working condition of unattended operation. A control system adopts a master-slave working mode; position encoding systems are respectively mounted on the outer sides of rails at two ends of a cart; and position data is sent to a controller from a code reader through a RS485 interface. The position encoding systems respectively acquire position scale values, actual walking distance values and the like of master-slave two ends of the cart to obtain a deviation value of the master-slave two ends; and a Siemens PLC S7-300 PID feedback control module is used in the controller for real-time deviation rectification control of the cart of the nuclear waste intelligent bridge crane. The method can enable the cart of the nuclear waste intelligent bridge crane to realize real-time synchronous deviation rectification control function, guarantees qualified precision of the control system, is efficient, safe and reliable in system operation, and has important actual use meaning.

Description

technical field [0001] The invention relates to lifting equipment, in particular to a deviation correction control method for a nuclear waste intelligent bridge crane. Background technique [0002] The nuclear waste bridge crane is used in the radioactive waste processing center to transfer the solidified barrels containing radioactive concentrated waste liquid and cement ash to the storage well for storage. At present, the degree of automation of domestic nuclear waste bridge cranes is relatively low, and its control accuracy mostly depends on the rich experience and skilled skills of professional drivers, relying on the remote operation and control of manual positioning and deviation correction by the driver in the cab, to a large extent. Restricting work efficiency and labor cost. Therefore, in the special working environment of high radiation such as nuclear waste, it is of far-reaching significance to realize the unattended automatic operation of nuclear waste cranes. ...

AI Technical Summary

Problems solved by technology

[0003] On the one hand, when the bridge crane is running under normal working conditions, because the two ends of the bridge crane cannot keep the walking synchronization state during the walking process, phenomena such as gnawing rail will occur, and the wheel rim will be accelerated. wear and tear, reducing the service life of the wheels or rails, leading to a series of problems such as excessive wear of the rim and even the scrapping of the entire wheel, which greatly threatens the safe operation of the crane and increases maintenance costs

On the other hand, under the working condition that the nuclear waste bridge crane needs to achieve high-precision positioning (for example: absolute positioning accuracy within ±3mm), the large deviation between the two ends of the crane cart will seriously affect the nuclear waste barrel in the subsequent intelligent positioning The positioning accuracy of entering and exiting the well leads to the inability of the nuclear waste solidification barrel in the intelligent crane control system to enter and exit the well accurately, which greatly reduces the stability of the unattended system

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