Today, let's talk about the reasons for the unusual noise of excavation opportunities.
The common causes of abnormal noise are abnormal wear and tear of the root canal of the manipulator, poor smoothness of all parts of the excavator, excavation of the gap between the crankshaft connecting rod and the valve, and clamping of the back pressure valve of the excavator. Excavator repair refers to the deterioration of equipment skills or faults. Skills and activities to restore its functions include various schemes of repair and repair of defects and accidents outside the schemes.
Abrasion of reverse support, loosening of connecting bolts or impurities in bearings (impurities in bearings may be worn by rolling elements and raceways), abnormal rotation of excavators and other conflicting parts, abnormal hydraulic circuit of excavators. There is no butter in the gear ring of the excavator rotary motor. Abnormal wear of connecting rod and sleeve, failure of cylinder seal, lack of air in bucket cylinder and lack of hydraulic oil. Excavator repair refers to the skill activity that restores its function after the equipment skill condition deteriorates or fails, including class scheme maintenance and out-of-plan defect repair and accident repair.
Abnormal noise of timing gear of excavator: wear of timing gear or improper device makes meshing clearance too large or too small, crankshaft and camshaft center line are not parallel, camshaft timing gear is loose or not smooth, camshaft timing gear teeth crack or gear radial crack; engine idle speed is very large, camshaft abnormal: camshaft Excessive axial clearance or loosening camshaft; abnormal pressure foot of engine valve: abrasion or inappropriate adjustment of valve organization parts, excessive valve clearance, lack of smooth valve organization; engine humming, abnormal sound of hydraulic tappet: too high or too low oil level of engine, lack of smooth oil of hydraulic tappet, hydraulic tappet failure.
Engine crankshaft abnormal sound, engine oscillation: crankshaft gap is too large to cause the abnormal axial noise, the bearing is selected from scratch to replace the noise; main bearing abnormal sound, engine oscillation: main journal and bearing loose, main bearing smooth, poor burning, crankshaft bending or axial gap; engine idle abnormal sound, medium and low speed buzz: smooth Bad or improper cooperation of bearings, poor quality of bearings or loosening of device voids, too tight can not deform bearing components, resulting in alloy shedding, connecting rod journal circular, small excavator model, poor contact with bearings.