(1) the failurecharacteristics of the initial stage of the construction machinery of the frametype hydraulic press www.yxpic.com. Mechanical engineering in use early (equivalent to takethe time) the fault is from high to low (lower curve), using the initial faultrate is high or low is with manufacturing or maintenance quality and take theperiod of use related. If mechanical engineering manufacturing or repairing thehigh quality and proper use and maintenance. So, the initial failure rate islow. Otherwise the early failure rate will be high. Early fault much isconnecting bolt looseness or loose; pipe fittings loose or loose: easy to blockthe oil channel or clip in the relative motion of the friction in the injuryparts (such as hydraulic system actuator cylinder) oil spill caused by metalshavings or casting sand residue, after adjusting the gap or pressure change,parts can not ability to implement provisions, some joint because of the boltis not tight and water leakage, oil spills, leakage and so on.
(2) the failurecharacteristics of the normal use stage of the frame type hydraulic machineconstruction machinery. Construction machinery after the end of the close, intothe normal use of the stage. Construction machinery in this stage operation, aslong as the required maintenance and proper use, generally will not fail, evenin the event of failure, and random fault (the fault has a hidden, maintenanceor inspection is not easy to find), and the failure rate is very low, flatcurve edged up. If the construction machinery in the normal use of the periodof failure, more casual or due to improper use, improper maintenance.
(3) the failurecharacteristics of the construction machinery of the frame type hydraulic pressnear the stage of major overhaul. When the construction machinery is used closeto the overhaul period, the loss of each component is increased. The faultcharacteristic of this stage is that the failure rate is high, and it iscommon, most of them are caused by wear and tear and part aging.
(4) the failurecharacteristics of construction machinery in different seasons. The failurerate of construction machinery is related to the seasons. In winter, thefailure rate is higher than that of the summer when the low temperature isused. For example, the fuel supply system is often poor in winter due to pooratomization. Fuel easy coagulation occurs oil passage is blocked and not easyto start. Or when the engine is running flameout fault; oil flow, acceleratethe mechanical wear and tear; storage battery leakage, resulting in engine isdifficult to start, braking is not reliable, transmission fluid abnormal.
Therefore, the faultcharacteristics of the engineering machinery and equipment is presented, and ithas different characteristics according to different stages of use.