3results about How to "Reduce abnormal vibration" patented technology

The invention belongs to the technical field of turn-milling composite five-axis rotary tables, and particularly relates to a turn-milling composite five-axis rotary table which comprises two side plates and rotary shafts rotationally connected to the side walls of the two side plates, the opposite ends of the two rotary shafts are fixedly connected with the same rotary table frame, and a rotary table is rotationally connected into the rotary table frame. The side wall of the side plate located on the right side is fixedly connected with a PLC. When abnormal vibration occurs in the working process of the turning and milling composite five-axis rotary table, the gravity center of the five-axis rotary table can be adjusted firstly, so that the problem of abnormal vibration of the five-axis rotary table caused by deviation of the gravity center of a workpiece is solved, and when it is detected that the abnormal vibration of the five-axis rotary table caused by deviation of the gravity center of the workpiece is not found, the turning and milling composite five-axis rotary table is started. And an operator can be reminded of the abnormal vibration condition in time, so that the operator can know the abnormal vibration condition of the five-axis turntable in time and overhaul the five-axis turntable in time, and the stability of workpiece machining is ensured.

The invention provides a dynamic centering method for a wind generating set, relates to the technical field of wind power process assembly, and aims to solve the problem that the centering precision is difficult to meet the requirement of a dynamic operation working condition due to the dynamic change of the rigidity of the elastic support rubber of the current generator in consideration of the dynamic change of the rigidity of the elastic support rubber of the generator during operation of the wind generating set. And the dynamic variable quantity is used as a correction value for correction during centering, so that the real centering precision during dynamic operation of the generator is improved, the operation precision of a transmission chain is improved, the abnormal vibration of a unit is reduced, and the service life of a transmission chain part is prolonged.

The application discloses an abnormal vibration detection method, device, equipment and medium, comprising: obtaining historical running data of a target rolling mill, the historical running data comprising vibration measurement data, rolling piece plate shape data, rolling piece production data and rolling process data corresponding in time sequence; constructing a training sample set and a test sample set according to the historical running data; training a preset prediction model according to the training sample set and the test sample set to obtain a target prediction model; obtaining real-time running data of a rolling mill to be detected, and inputting the real-time running data into the target prediction model to determine whether the rolling mill to be detected has abnormal vibration. The application can find the best speed reduction window before the abnormal vibration causes great damage to the rolling mill or the rolling piece, and thus the rolling mill can be controlled to reduce the speed in time, the occurrence probability of abnormal vibration is reduced, the rolling quality of the rolling piece is improved, and the service life of the rolling mill is prolonged to a certain extent.