山東裝載機異常抖動怎么回事？

山東裝載機http://www.zjj678.com/在工作3000小時之后，會出現(xiàn)儀表臺、駕駛室抖動現(xiàn)象，且抖動現(xiàn)象越來越嚴(yán)重，以至駕駛室、整機也產(chǎn)生抖動。抖動現(xiàn)象造成該機物料稱重不準(zhǔn)確，無法正常使用。下面永保機械的技術(shù)人員給大家分析一下引起抖動的原因有哪些？
   
1、山東超低裝載機液壓系統(tǒng)采用轉(zhuǎn)向優(yōu)先方式，轉(zhuǎn)向泵輸出的壓力油與工作泵輸出的壓力油合流后向工作裝置供油。工作泵只有在工作裝置動作時才承受負(fù)荷，而轉(zhuǎn)向泵不但在工作裝置動作時承受負(fù)荷，轉(zhuǎn)向時也承受負(fù)荷，因此轉(zhuǎn)向泵工作時間相對較長、磨損較大。
Shandong ultra-low-loader hydraulic steering system uses priority mode, steering pump output pressure oil pump output pressure of the working oil to the working device after merging oil. Pump only work when the work equipment to

withstand the load operation, while steering pump not only withstand the load at work means action, but also bear the load when steering, steering pump and therefore a relatively long time, wear large.
   
2、山東裝載機在優(yōu)先閥閥體、閥芯、調(diào)壓彈簧和壓力油的共同作用下，EF口開啟與閉合按照一定頻率相互變換，便發(fā)生一定頻率的振動。由于該振動與儀表臺、駕駛室的固有振動頻率接近，導(dǎo)致儀表臺、駕駛室發(fā)生共振。
Shandong loaders under the joint action priority valve body, valve, pressure regulator spring and oil, EF mouth opening and closing transform each other according to a certain frequency, the vibration of a certain frequency will occur.Since the vibration and dashboard, close to the natural frequency of the cab, resulting in the instrument panel, cabin resonance.
   
3、山東裝載機http://www.zjj678.com/如果在發(fā)生抖動時轉(zhuǎn)動轉(zhuǎn)向盤，優(yōu)先閥的EF口就會關(guān)閉，轉(zhuǎn)向泵就不會通過優(yōu)先閥向工作裝置液壓系統(tǒng)提供脈沖油液，裝載機也就不會發(fā)生抖動現(xiàn)象。 
If you turn the steering wheel loaders Shandong in the event of a shake, the EF port priority valve closes, it will not provide a pulse steering pump oil to the hydraulic system via priority valve, loaders will not happen jitter.