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    首页 >> 装载机机油压力的影响因素有哪些?
    装载机机油压力的影响因素有哪些?
    发布时间:2015-5-25 16:05:05    浏览:281次

    装载机在工作过程中,如果机油的压力低于0.2 MPa应立即停机查找原因,待排除故障后方可继续工作,否则会酿成烧瓦、拉缸等重大机械事故。下面商河永保机械的专家给大家介绍一下山东装载机机油压力的影响因素有哪些?

    1、若装载机机油油量不足,会使机油泵的泵油量减少,导致机油压力下降,加剧曲轴与轴承、缸套与活塞的磨损;若山东装载机发动机温度过高,不但加速机油老化、变质,也容易使机油变稀,导致油压下降。
    If Shandong loaders oil fuel shortage, it will reduce the oil pump fuel pump, causing oil pressure drop, increasing the crankshaft and bearings, cylinder and piston wear; if Shandong loader engine temperature is too high, not only to accelerate the aging of oil, bad, but also easy to oil thinning, resulting in decreased oil pressure.

    2、装载机机油泵的驱动齿轮与驱动轴的固定销断裂或配合键脱落,以及机油泵吸入异物而将泵油齿轮卡住,都会使机油泵停止运转,机油压力也随之降为0。山东装载机发动机长期使用后,曲轴与连杆轴承的配合间隙会逐渐增大,机油压力也随着下降。
    Shandong loaders oil pump drive gear and drive shaft fixing pin breakage or loss with the key, and pump inhaled foreign body and will pump oil gear jammed, will cause the oil pump is stopped, the oil pressure also will be reduced to zero. Shandong loader engine after long-term use, with the gap crankshaft and connecting rod bearings will gradually increase, along with the oil pressure drop.

    3、装载机机油滤油器堵塞,当机油因滤油器堵塞而不能流通时,设在滤油器底座上的安全阀就被顶开,机油便不经过滤而直接进入主油道。如果安全阀的开启压力调得过高,滤油器被堵塞时,安全阀就不能及时打开,于是机油泵压力升高,内漏增加,主油道供油量减少,引起油压下降;若回油阀弹簧疲劳软化或调整不当,阀座与钢珠的配合面磨损或被脏物卡住而关闭不严时,回油量便明显增加,主油道的油压也会随之下降。
    Shandong loaders oil filter clogging, when the oil can not flow due to filter clogging, located at the base of the safety valve on the filter was the top open, the oil will not filtered directly into the main oil. If the safety valve opening pressure adjusted too high, when the oil filter is clogged, the valve can not be opened in time, so the pump pressure increases, leakage increases, reducing the amount of the main oil supply, causing oil pressure drop; if when the return valve spring fatigue softening or improperly adjusted, with the surface of the valve seat and ball worn or loose dirt stuck closed, the oil will return to a marked increase in the main oil hydraulic pressure will drop.

    4、装载机机油散热器及管路漏油,会使油压下降,管路若被脏物堵塞,也会因阻力增大而使油的流量减少、油压下降。若山东装载机油压传感器失灵,或由主油道至油压传感器的油管因污垢积聚而流通不畅时,油压表将显示机油压力下降。
    Shandong loaders oil radiator and piping oil spills, oil will fall, if they are clogged with dirt pipeline, also due to increased resistance to reduce the flow of oil leaving the oil pressure drop. If the oil pressure sensor failure Shandong loader, or by the main oil pipeline oil pressure sensor due to dirt accumulation and poor circulation, the oil pressure gauge will show oil pressure drop.

    5、装载机机油若过脏、过黏,就容易堵塞吸油盘,当发动机小油门低速运转时,机油泵吸油量不大,主油道尚能建立起一定的压力,油压会正常;但当加大油门高速运转时,机油泵的吸油量会因吸盘阻力过大而明显减少,进而造成机油压力表的显示值下降。
    Shandong loaders oil if too dirty, too sticky, it is easy to plug the suction plate, when the engine is small at low speed throttle, oil pump oil absorption is not, the main oil can still build some pressure, oil pressure is normal; but when the throttle at high speed, oil absorption due to the oil pump sucker too much resistance and significantly reduced, which causes the oil pressure gauge displays the value decline.