On-line vibration detection device and method for equipment state of hot finishing mill

Abstract

The invention relates to an on-line vibration detection device and method for an equipment state of a hot finishing mill, belonging to the technical field of on-line detection of roll steel. The signal output ends of the vibration velocity and vibration acceleration of the device are respectively connected with the input end of a central processing module, and the output end of the central processing module is externally connected with an upper computer and an alarming device; an equipment fault can be checked through vibration detection in working state through a storing step, an inputting step, a collecting step, an operation step, a determining step and a revising step; and false alarming due to temporarily irregular impact and vibration such as steel-engaging impact and steel-throwing impact when the hot finishing mill works can be effectively reduced, and the authenticity of alarming can be improved.

Description

technical field [0001] The invention relates to a vibration detection device, in particular to an on-line vibration detection device for equipment status of a hot rolling finishing mill, and also relates to a corresponding method, which belongs to the technical field of on-line detection of steel rolling. Background technique [0002] As far as the applicant knows, the existing on-line vibration detection device for a rolling mill is mainly composed of a vibration sensor and a central processing module arranged on the equipment. After the equipment vibration signal detected by the vibration sensor is transmitted to the central processing module, after A / D conversion, it is compared with the predetermined threshold to determine whether the equipment is faulty and whether to send an alarm signal. For example, the Chinese patent application number 02294631.4 discloses a high-speed wire rail machine gear box fault detection board, which is connected to the input of a signal proc...

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Problems solved by technology

[0003] However, when the hot-rolling finishing mill is running, in the process of rolling a billet, there are constantly changing loads such as no-load, steel bite impact, steel strip rolling, and steel throwing impact, and different specifications of billets and different equipment The speed will also lead to changes in the load, which will cause various vibrations in the equipment. The vibration signals obtained from the above-mentioned direct monitoring of continuous operation equipment are relatively complicated, and it is often difficult to distinguish whether the vibration is caused by changes in rolling conditions or changes in equipment status. As a result, Fault location is difficult and there are many false alarms

In addition, existing detection devices usually only detect vibration speed, and the abnormal information provided is not comprehensive

Therefore, it is difficult to meet the actual needs of status detection, fault diagnosis and early warning of finishing rolling equipment

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