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在矿山运输车辆等设备中应用液压技术进行转向、翻转、升降与举升,液压系统中的液压缸和液压支柱总成件,常因操作人员误操作和长时间受径向力作用等原因,使液压缸内芯轴弯曲。这样将导致液压缸偏磨、油封漏油及泄压等故障,使液压缸不能正常工作。液压缸内芯轴,多是采用优质钢材,强度高、刚性好,一般很难进行校正修复。因此,常因配件短缺、购货不及时等造成经济损失。对此,我公司采用制矫直机进行液压缸芯轴的校正修复。1 校直机工作要求 （1）在校正液压缸芯轴受力部位垫黄铜或紫铜板。 （2）带指示计的电动液压千斤顶,量程应该满足所校正芯轴的抗弯强度。
In mining transportation vehicles and other equipment, hydraulic technology is applied to steering, turning over, lifting and lifting. The hydraulic cylinders and hydraulic prop assemblies in the hydraulic system are often misoperated by operators and subjected to radial force for a long time. Bending the cylinder mandrel. This will lead to partial cylinder wear, oil seal leakage and pressure relief and other failures, the hydraulic cylinder can not work properly. Hydraulic cylinder mandrel, mostly the use of high-quality steel, high strength, good rigidity, the general difficult to repair correction. Therefore, often due to lack of spare parts, purchase is not timely, resulting in economic losses. In this regard, our company adopted the system straightening machine hydraulic cylinder mandrel correction repair. 1 straightening machine work requirements (1) in the correction of hydraulic cylinder mandrel force pad brass or copper plate. (2) Electro-hydraulic jack with indicating gauge, measuring range should meet the bending strength of the mandrel.