Piezoelectric shape meter for detecting flatness of cold and thermal state strip material

Abstract

The invention belongs to the technical field of automatic testing of slab band rolling lines, and relates to a detection device for automatically detecting the flatness (strip shape) of cold and hot rolled strips on line. The detection device is characterized in that a detecting roller (4) is arranged on bearing seats (3) and (3'); a stepless speed regulating motor (1) which can drive or be driven is connected with the detection roller (4) through a shaft coupling (2); the other end of the detection roller (4) is provided with a distributor (5) and a signal transmission device (6); the outer surface of a roller core (7) of the detection roller (4) is provided with 1 to 6 concave through grooves along the axial direction; and a plurality of sets of piezoelectric sensors (12) are arranged in the through grooves and in combined assembly with an integral elastic press plate (11) and a roller sleeve (8). The detection roller (4) adopts a fully sealing structure, and can perform water cooling so as to adapt to the cold and hot rolled working conditions; and pressure signals are transmitted in wired and wireless modes, so high-speed on-line detection can be achieved. A strip shape instrument has high rigidity, quick response and high adapting speed; and the signals are not intervened by static load and the temperature. Therefore, the detection device has the advantages of stable signal, high detection precision, quick detection, adaptation to high-speed cold and hot rolling, long service life, and the like, and has important practical value for improving the flatness of the strips and achieving the high-speed rolling.

Description

technical field [0001] The invention belongs to the field of automatic measurement and testing instruments for metallurgical machinery and equipment, and relates to a detection device for on-line automatic detection of the flatness (strip shape) of cold and hot rolled strips applied to strip rolling lines. It is suitable for on-line detection of plate shape in the industrial production of metal material plate and strip rolling. Background technique [0002] In the plate and strip rolling process, the comprehensive control technology of plate shape and thickness is the key technology to effectively improve the quality of plate and strip products. With the development of plate thickness control technology, the automatic control technology of plate thickness (hydraulic AGC) has been developed rapidly and Basic industrial production needs have been met. However, the shape control technology is affected by equipment, technology and mathematical models, and has not yet fully met ...

AI Technical Summary

Problems solved by technology

[0005] In order to adapt to the flatness detection of metal plates and strips under high-speed cold and hot rolling conditions,

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