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工作时加长臂挖掘机的弹性臂卡顿怎么办?

日期:2019-01-10   来源:
挖掘机弹性臂不连贯发卡,可能是小臂再生阀出现发卡,需要对小臂再生阀进行检查。因为在小臂回收时,依据液压体系设计,小臂要进行再生,以避免高速多体系的冲击,因而设计进行再生,小臂油缸的进油和回油在再生阀位置进行互通来平衡压力冲击。大臂发卡也是相同的道理。
Discontinuous hairpin of excavator elastic arm may be the hairpin of arm regeneration valve, which needs to be checked. Because when the arm is recovered, according to the hydraulic system design, the arm should be regenerated to avoid the impact of high-speed multi-system, so it is designed to regenerate. The inlet and return oil of the arm cylinder are exchanged at the position of the regeneration valve to balance the pressure impact. The same is true for arm hairpins.
1若偶尔出现应考虑:
If occasionally occurs, consideration should be given to:
液压油体系故障,体系压力反常,流量输出不够,检查泵电磁比例阀所宣布的先导二次压力是否偏低;
Hydraulic oil system failure, abnormal system pressure, insufficient flow output, check whether the pilot secondary pressure announced by the electromagnetic proportional valve of the pump is on the low side;
电磁阀线路接触不良,线路是否有断线的情况。
Solenoid valve line contact is not good, whether the line is broken.
2若经常出现应考虑:
2. If frequent occurrences occur, consideration should be given to:
阀芯发卡。阀芯发卡会影响油缸进油口开度,油路不畅后,将会影响动作的连贯性;
Valve spool hairpin. The valve core hairpin will affect the opening of the cylinder inlet. If the oil path is not smooth, it will affect the continuity of the action.
手柄先导阀是否发卡
Whether Handle Pilot Valve Hairs Card
而阀芯发卡首先应考虑液压油油品是否太脏,如果是,则需要清洗或替换液压油,清洗阀芯和油道。其次应考虑下面几个原因:
加长臂挖掘机
And the valve core hair card should first consider whether the hydraulic oil is too dirty, if so, it needs to clean or replace the hydraulic oil, cleaning the valve core and oil pipeline. Secondly, the following reasons should be considered:
a安装紧固螺钉时发生偏斜,使阀体孔和阀芯变形曲折;
A The deflection occurs when the fastening screw is installed, which makes the body hole and spool deformed and tortuous.
b挖掘机作业时,油缸弹性活动,空气中的杂质进入阀芯,与阀体孔配合空隙,使阀芯在阀体孔内偏心放置,发生径向不平衡力,导致阀芯液压卡紧;
B Excavator operation, cylinder elastic activity, impurities in the air into the valve core, with the valve body hole with the gap, so that the valve core eccentrically placed in the valve body hole, radial unbalanced force occurs, leading to hydraulic clamping of the valve core;
c阀芯与阀体孔轴线不同轴,发生液压卡紧;
C valve core is not axially aligned with the hole axis of the valve body, and hydraulic clamping occurs.
d阀芯与阀体孔配合空隙过小或过大;
D. The clearance between the spool and the valve body hole is too small or too large.
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