"Sanjue"of Agricultural Machinery Parts Appraisal of Agricultural Machinery Failure

The use of agricultural machinery in rural areas is more common,and various types of failures occur during operations.In normal maintenance,although instruments and instruments can be used to identify the technical status of farm machinery parts,agricultural machinery operators can initially determine farm machinery failures based on the visual,auditory,and tactile"three senses".
1,visual identification.Can identify the wear of the external parts,as well as the surface quality of the parts.Such as cracks in the cylinder block,cylinder head,gear and fatigue bearings on the surface of the fatigue,the injector,the exhaust valve after a serious burning blue or pitted annealing,clutch and brake friction material wear and burn,gear pair The bite marks,the degree of light leakage between the piston and cylinder liner,etc.

2,auditory identification method.Auditory identification can be tapped with a small hammer to gently check the metal parts of the inspection site,from the sound to determine whether the internal cracks,the connection is tight,generally close and sound parts sound crisp,defective voice murmur.This method can be used to identify whether the crankshaft,sidebars have cracks,the combination of the bearing alloy and the body,and whether the imported pump Castel wine rivets are securely connected.In addition,the sound from the running gear set can also roughly determine the meshing condition.

3,tactile identification method.Tactile appraisal can be shaken by hand,and the gap size can be judged by sensation,and it is not necessary to measure with a measuring instrument.Such as the gap between the valve stem and the valve guide,the radial and axial clearance of the flow bearing,etc.