Rolling production line conical conveying roller speed dynamic cooperative control system and method

Abstract

The invention belongs to the field of energy conservation of mill table conveying electromechanical systems, and relates to a dynamic cooperative control system and method for the speeds of tapered roll gangs of a rolling production line. According to the method, real-time driving motor speed calculation is carried out on the basis of slab widths and roll shape characteristics of the roll gangs in different areas. Equipment involved in the method comprises motor electric driving units and a slab width gage device, wherein the motor electric driving units are used for a heavy-load roll gang, a medium-load roll gang and a light-load roll gang at the outlet side of a rolling mill. Different tapered roll drive control systems are completely independent, set speed values of roll gang driving motors are calculated dynamically by considering slab width detection values, outlet side linear speed expectation values and taper values of tapered rolls, and therefore the set speed values can be better matched with slab width changes and roll gang conveying speeds when the different-load roll gangs are different in taper; the speeds of the roll gangs in the different areas are consistent, relative movement resistance between slabs and the roll gangs and between the roll gangs in the transportation process of the tapered roll gangs of the production line is reduced, and the important effects of improving the product quality, lowering electric energy loss and reducing the equipment maintenance rate are achieved.

Description

technical field [0001] The invention relates to the field of electromechanical system control of a slab conveying roller table in a metal strip rolling production line, and in particular designs a dynamic cooperative control system and method for the speed of a conical conveying roller table in a rolling production line. Background technique [0002] In the plate and strip rolling production line of the metal industry, the conveying roller table is an essential key equipment for conveying the rolled piece. Tao to complete. According to the different working conditions and process requirements of the area where the slab is located, the design form of each section of the conveying roller table will be slightly different, mainly reflected in the transmission power, length of the roller body, roller diameter, roller shape, material, etc. In occasions that require high surface quality, such as wide-width metal plate and strip production lines, tapered roller tables are generally...

AI Technical Summary

Problems solved by technology

[0003] The use of tapered roller tables, on the one hand, helps to reduce the contact area between the rolling mill and the roll body, but on the other hand, it also makes it difficult to accurately obtain the linear speed of the roll body, and it is difficult to carry out depth cooperative control of tapered roller tables in different regions. question

Traditionally, since the metal strip rolling process has high requirements for continuity, operation rate and safety, the speed selection of the roller table drive motor is very important for slabs of different widths and tapered roller tables in different areas. The traditional conveying roller line has a single method for setting the speed of the roller motor in different areas. Generally, only parameters such as the roller motor, reducer, and standard roller diameter are considered, and the motor speed setting value is directly calculated from the line speed setting value. Changes in factors such as the taper of the tapered roller table, the width of the slab, and the shape of the roller table in different regions are not considered, which will inevitably result in different degrees of speed difference between the roller table and the slab, and the speeds of the two do not match. , and the speed mismatch between roller tables in different areas may cause energy loss due to relative friction, and the relative movement between the rolling mill surface and the roller surface affects product quality

In severe cases, the transmission motor will overheat or even burn out and the rate of product failure will increase

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