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There are two methods gearbox fault diagnosis, one is vibration, noise and oil and other dynamic signals generated during the running gear, the use of signal processing methods to perform failure analysis, diagnosis. The other is based on the theory of friction and wear by lubricating fluid analysis to achieve the purpose of fault diagnosis.
Transmission gear (internal teeth grinding process) when in operation, of its own due to poor manufacturing, poor operation and maintenance, etc., may lead to gear malfunction, so the gear failure can be divided into two categories, by manufacturing and assembly and other reasons caused by errors such as gears, gear and bore different heart, the various parts of misalignment, imbalance. The other is the inner-tooth gear grinding caused due to the long run, the tooth surface is generally subjected to a large load, both the relative rolling engagement between two teeth, but also relative sliding, in which case the long run It will lead to gear surface pitting, flaking, wear plastic flow failure. (Reference: herringbone gear machining)
Gearbox has put away in the delivery of lubricating oil net internal teeth grinding gears inside the box is coated with anti-rust oil when stored in dry warehouse uniform temperature valid for six months, the appearance of the gearbox to the special paint coated, France blue, etc. to the shaft coated with anti-rust oil to prevent surface rust gearbox. Adjustable gearbox parts are set at the plant before, in exceptional circumstances, a field can be used for further adjustments.

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