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国产WY160型液压挖掘机经过1500多小时各种不同条件下的试验考核和两个施工工地500至700小时的使用表明,该机在可靠性方面还存在一定问题。集中表现在国产8V130-4型发动机和本厂自制的油泵、油马达、片式分配阀和行走、回转减速机等主要零部件上。据统计,该机的运转率(运转时间占运转与修理时间之和的百分比)仅为57%,在全部停机故障中,发动机故障约占30%,液压件和减速机故障率占50%左右。事实证明,该机的主要配套件必须重新选择。一、选择配套件的原则根据我们的经验,WY160型挖掘机配套
The WY160 hydraulic excavator made in China after more than 1,500 hours of testing under various conditions and the use of 500 to 700 hours in two construction sites shows that the machine still has certain problems in terms of reliability. Focus on the domestic 8V130-4 engine and the factory’s self-made oil pumps, oil motors, chip-type distribution valves and walking, rotary reducer and other major components. According to statistics, the operating rate of the aircraft (the percentage of the operating time and the sum of the operating and repair time) is only 57%. Among all the shutdown failures, the engine failure accounts for about 30%, and the hydraulic and reducer failure rate accounts for about 50%. . Facts have proved that the main parts of the aircraft must be re-selected. First, choose the principle of matching parts According to our experience, WY160 excavator matching