Diagnostic system of non-contact type rotary mechanical failure
A rotating machinery and non-contact technology, applied in the system field of detection technology, can solve problems such as not getting rid of contact measurement, and achieve the effect of strong generalization ability
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[0019] The system of the present invention is further described below: this embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation and specific operation process are given, but the protection scope of the present invention is not limited to the following embodiments.
[0020] Take the gear fault in the JZQ250 two-stage transmission gearbox as an example below. The gearbox is driven by a three-phase motor connected with an elastic coupling. 1 =64 / 35, low-speed gear ratio i 2 =81 / 18, input shaft speed n during work 1 = 1500 rpm, output shaft n 2 =176 rpm.
[0021] When the gear is in the normal and abnormal state, the impact meshing vibration will occur due to the meshing of the teeth, but the magnitude of the impact will change with the different gear states. Various abnormal conditions of the gears will cause the increase of the meshing impact force, and the fault frequency of the abnormal gears is generally ...
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