CN-121972519-A - Winding-prevention steel and winding stopping control device for winding pinch roll of hot rolling production line

CN121972519ACN 121972519 ACN121972519 ACN 121972519ACN-121972519-A

Abstract

The invention relates to a steel winding prevention and stopping control device for a coiling pinch roll of a hot rolling production line, belonging to the technical field of ferrous metallurgy hot rolling coiling process equipment, comprising a multidimensional sensing device, a control device and a control device, wherein the multidimensional sensing device is arranged on the pinch roll of the hot rolling production line and is used for collecting working parameters of the pinch roll; the system comprises a risk early warning and parameter adapting module, a PLC control system and a steel winding accurate stopping control module, wherein the risk early warning and parameter adapting module transmits collected working parameters to the PLC control system through an industrial Ethernet, the PLC control system is used for judging whether a hot rolling production line has a steel winding risk, the steel winding accurate stopping control module is used for judging whether a steel winding accident occurs according to the working parameters, and stopping control is triggered when the steel winding accident occurs. The invention breaks through the limitation of traditional single parameter monitoring, adopts multi-dimensional perception of 'strip steel position + pressure + speed + tension', takes 'slip rate', 'head deviation quantity' as a potential steel winding risk judging index for the first time, realizes the transition from 'passive response' to 'active prevention', and solves the problem of poor adaptability of large-specification production line strip steel.

Inventors

WANG CHUNSHENG
Cho J Tunay Jin
WEI YINGYING
WANG HUAN
ZUO PENG
LIU DONGDONG
WANG JINGYU
TAN SIYU
WANG BO

Assignees

内蒙古包钢钢联股份有限公司

Dates

Publication Date: 20260505
Application Date: 20260316

Claims (5)

1. The utility model provides a hot rolling production line batches pinch roll and prevents twining steel and twines steel parking controlling means which characterized in that includes: the multidimensional sensing device is arranged on the hot rolling 2250mm production line coiling pinch roll and is used for collecting working parameters of the pinch roll; The risk early warning and parameter adapting module is used for transmitting the working parameters acquired by the multidimensional sensing device to the PLC control system through the industrial Ethernet, wherein the PLC control system is used for judging whether the hot rolling production line has the risk of steel winding or not; And the steel winding accurate parking control module is used for receiving the working parameters acquired by the multidimensional sensing device, judging whether a steel winding accident occurs according to the working parameters, and triggering parking control when the steel winding accident occurs.
2. The steel winding prevention and stopping control device for a hot rolling production line coiling pinch roll according to claim 1, wherein the multidimensional sensing device comprises: The strip steel head position sensor is arranged at the 1.5m position of the inlet side of the pinch roll and is used for identifying the deviation between the center line of the strip steel head and the center line of the pinch roll; The pinch roll pressure sensor is arranged in a pinch roll hydraulic cylinder and is used for collecting the actual pressure of the upper roll and the lower roll on the strip steel; the roll surface speed sensor is arranged at the shaft end of the motor of the pinch roll and used for collecting the rotating speed of the motor and the linear speed of the roll surface; The strip steel tension sensor is arranged on a tension roller between the pinch roller and the coiling machine and is used for collecting real-time tension of strip steel.
3. The hot rolling production line coiling pinch roll steel winding prevention and steel winding stopping control device is characterized in that when the deviation of the head of strip steel is more than or equal to 5mm, the pressure deviation of the pinch roll is more than or equal to 20% or the slip ratio is more than or equal to 3%, the system triggers yellow early warning, the risk type is displayed on a central control screen of a PLC control system, and early warning information is pushed to an operator terminal.
4. The steel winding prevention and stopping control device for the winding pinch roll of the hot rolling production line according to claim 3, wherein the PLC control system is used for calling a preset parameter library according to strip steel information issued by an MES system, so that the actual pressure and the motor rotation speed are kept within a set range.
5. The hot rolling line pinch roll anti-tangling and steel tangling shutdown control device according to claim 4, wherein when it is determined that a tangling accident occurs, the three-stage shutdown control logic is triggered: the first-stage speed reduction is that the motor speed of the pinch roll is reduced to 30% of the rated speed within 0.1s, so that the inertia of continuous winding of strip steel is reduced; The second-stage pressure relief, namely synchronously controlling the pressure relief of a hydraulic cylinder of the pinch roll to a preset safety pressure, avoiding the extrusion deformation of the strip steel by the roll body and protecting the roll surface; and (3) three-stage shutdown, namely when the roller surface speed is reduced to below 0.5m/s, cutting off a power supply of a motor to finish shutdown, and starting an anti-winding steel blowing device at the side part of the pinch roller to blow off residual strip steel slag on the roller surface.

Description

Winding-prevention steel and winding stopping control device for winding pinch roll of hot rolling production line Technical Field The invention relates to the technical field of equipment control of a ferrous metallurgy hot rolling coiling process, in particular to a coiling pinch roll steel winding prevention and steel winding stopping control device of a hot rolling production line. Background In the winding process of a hot rolling 2250mm production line, a pinch roll is used as core equipment and plays a key role in conveying the head of the strip steel to a coiling drum of a coiling machine, controlling the tension of the strip steel and ensuring the coiling quality. However, the method is influenced by factors such as strip steel materials (such as high yield strength of high-strength steel), plate shape defects (such as side waves and middle waves), equipment parameter fluctuation (such as pressure deviation of a pinch roll) and the like, steel winding accidents are easy to occur in the pinch roll area, obvious pain points exist in the related technical scheme in the current industry, steel winding early warning hysteresis is achieved, the prior art lacks active preventive capability, the state of the pinch roll is monitored by relying on manual inspection or a conventional sensor (such as a temperature sensor) in many ways, the problem can only be passively found after the steel winding accidents occur (such as motor current is suddenly increased due to the fact that a strip steel winding roll body is wound), potential steel winding risks (such as slipping is caused due to strip steel head deviation and pinch roll pressure shortage) cannot be recognized in advance, the early warning hysteresis causes the steel winding accident occurrence rate to be high, and industrial statistics data show that the hot rolling 2250mm production line winding pinch roll takes the steel winding accidents about 8-10 times. The control of stopping after winding steel is extensive, and equipment damage is serious, after winding steel occurs, the existing control method mostly adopts an emergency stop mode, namely, the power supply of a motor of a pinch roll is directly cut off, so that strip steel wound on a roll body continuously extrudes the roll surface due to inertia, roll-shaped damage (such as scratch and dent of the roll surface) and bearing abrasion of the pinch roll are caused, the maintenance cost of single winding steel accident exceeds 20 ten thousand yuan, the maintenance period is as long as 8-12 hours, and the productivity of a production line is directly influenced (average daily yield reduction is about 300 tons). The control parameter universality is strong, the suitability is poor, the existing pinch roll control method (such as pressure and speed control) is mostly designed based on the specification of the universal strip steel, and the characteristics of large wide (2250 mm) and large (1.5-25 mm) material difference range of the hot rolling 2250mm product line strip steel are not subjected to customized optimization, so that the contradiction problem that the strip steel is damaged by overlarge pressure or the strip steel is wound by overlarge small pressure due to the mismatch of the pinch roll pressure and the strip steel yield strength when the thin high-strength steel is rolled is caused. The problems cause great potential safety hazards of equipment, poor production continuity and high comprehensive cost in the reeling process of the hot rolling 2250mm production line, and a technical scheme with the functions of active steel winding prevention early warning, accurate steel winding stopping control and scene parameter adaptation is needed. Disclosure of Invention In order to solve the problems, an embodiment of the invention aims to provide a steel winding prevention and stopping control device for a coiling pinch roll of a hot rolling production line. A hot rolling production line batches pinch roll and prevents twining steel and twines steel parking controlling means includes: the multidimensional sensing device is arranged on the hot rolling 2250mm production line coiling pinch roll and is used for collecting working parameters of the pinch roll; The risk early warning and parameter adapting module is used for transmitting the working parameters acquired by the multidimensional sensing device to the PLC control system through the industrial Ethernet, wherein the PLC control system is used for judging whether the hot rolling production line has the risk of steel winding or not; And the steel winding accurate parking control module is used for receiving the working parameters acquired by the multidimensional sensing device, judging whether a steel winding accident occurs according to the working parameters, and triggering parking control when the steel winding accident occurs. Preferably, the multi-dimensional sensing device comprises: The strip steel head position sensor is arranged at the 1.