Today, tell us about the reason for the abnormal noise in the excavation opportunity.
The common causes of abnormal noise are abnormal wear of the root canal of the manipulator, poor smoothness of various parts of the excavator, the gap between the crankshaft connecting rod and the valve is excavated, and the back pressure valve of the excavator is stuck. Excavator repair refers to the deterioration of equipment skills or defects. The technical activities for restoring its functions include various program repairs, repairs of non-programs, and accident repairs.
The reversing support of the excavator is worn, the connecting bolt is loose or there are impurities in the bearing (impurities in the bearing may be worn by the rolling elements and raceways), the rotating part of the excavator and other conflicting parts are abnormal, the hydraulic circuit of the excavator Abnormal. There is no butter in the gear ring of the rotary motor of the excavator. The connecting rods and sleeves wear abnormally, the cylinder seal is ineffective, the air in the bucket cylinder is lacking, and the hydraulic oil is lacking. Excavator repair refers to the skill activity to restore the function of the equipment after the deterioration or failure of the equipment skill, including class plan maintenance and non-plan repair and accident repair.
Abnormal noise from the timing gear of the excavator: the timing gear is worn or the device is improper, the meshing gap is too large or too small, the crankshaft and the camshaft center line are not parallel, the camshaft timing gear is loose or poorly smooth, the camshaft timing gear Tooth cracking or gear radial cracking; engine idling speed is very large, abnormal camshaft: the axial gap of camshaft is too large or camshaft loose; engine valve presser foot is abnormal: valve organization components are worn or adjusted incorrectly, valve clearance is too large Large, lack of smooth valve organization; engine buzzing, abnormal sound of hydraulic tappet: engine oil level is too high or too low, hydraulic tappet lacks smooth oil, hydraulic tappet fails.
Abnormal noise of the engine crankshaft, initiation of engine oscillation: excessive crankshaft clearance causes abnormal axial noise, select bearing replacement noise from the beginning; abnormal noise of the main bearing, initiation of engine oscillation: main shaft journal and bearing looseness, poor smoothness of the main bearing, poor incineration, and crankshaft bending Or axial clearance; abnormal noise at idle speed of the initiator, humming noise at medium and low speeds: poor smoothness or improper bearing cooperation, poor bearing quality or loose device clearance, too tight can not deform the bearing components, causing the alloy to fall off, and the connecting rod journal is round Shape, small excavator model, poor contact with the bearing.
