Novice operation:

由于新手对于高空作业车不太了解，或者不明白操作方式，容易操作失误引起故障，甚引起机械事故;对于这方面的操作人员一定要耐心学习，培训合格方可上岗。

Due to beginners not being familiar with high-altitude work vehicles or not understanding their operating methods, it is easy for them to make mistakes and cause malfunctions, and even mechanical accidents; For operators in this field, they must patiently learn and pass the training before taking up their positions.

发生松动：

Loosening occurs:

高空升降平台车车新加工装配的零部件，存在着几何形状和配合尺寸的偏差，在使用初期，由于受到冲击振动等交变负荷，以及受热变形等因素的影响，加上磨损过快等原因，容易使高空作业车原来紧固的零部件产生松动。

The newly processed and assembled components of the high-altitude lifting platform vehicle have deviations in geometric shape and fitting dimensions. In the early stages of use, due to the influence of alternating loads such as impact and vibration, as well as thermal deformation and other factors, coupled with rapid wear and tear, it is easy to loosen the previously fastened components of the high-altitude working vehicle.

磨损速度快：

Fast wear rate:

由于高空升降平台车车零部件的加工安装的因素，其摩擦表面粗糙，接触的面积较小，承重不均的情况下，就会产生较大的磨损。高空作业车在运行过程中，零件表面的凹凸部分相互嵌合摩擦，磨落下来的金属碎屑，又作为磨料，继续参与摩擦，更加速了零件配合表面的磨损。因此，磨合期内容易造成零部件的磨损，磨损速度快。这时，如果高空作业车超负荷作业，则可能导致零部件的损坏，产生一些故障。

Due to the processing and installation of high-altitude lifting platform vehicle components, their friction surface is rough, the contact area is small, and uneven load-bearing can result in significant wear. During the operation of the high-altitude work vehicle, the concave and convex parts on the surface of the parts are intertwined and rubbed against each other, and the metal debris that falls off is used as abrasive to continue to participate in friction, further accelerating the wear of the mating surface of the parts. Therefore, during the running-in period, it is easy to cause wear and tear on the components, with a fast wear rate. At this point, if the high-altitude work vehicle is overloaded, it may cause damage to the components and cause some malfunctions.

渗漏现象：

Leakage phenomenon:

由于高空升降平台车车零部件的松动振动和机器受热的影响，机器的密封面以及管接头等处，会出现渗漏现象;部分铸造加工等缺陷，在装配调试时难以发现，但由于作业过程中的振动冲击作用，这种缺陷就被暴露出来，表现为漏(渗)油(水)。

Due to the loose vibration of the components of the high-altitude lifting platform vehicle and the influence of heat on the machine, leakage may occur at the sealing surface and pipe joints of the machine; Some defects such as casting and processing are difficult to detect during assembly and debugging, but due to the vibration and impact during the operation, these defects are exposed, manifested as oil (water) leakage.

润滑油使用不当：

Improper use of lubricating oil:

高空升降平台车润滑保养工作不到位也会引起零部件的配合间隙较小，润滑油不易在摩擦表面形成均匀的油膜，并且由于装配等原因，很难保证配合间隙的均匀性，从而降低润滑效能，造成机件的早期异常磨损;严重时会造成精密配合的摩擦表面划伤或咬合现象，导致故障的发生。

Inadequate lubrication and maintenance of high-altitude lifting platform vehicles can also cause small fitting gaps of components, making it difficult for lubricating oil to form a uniform oil film on the friction surface. Moreover, due to assembly and other reasons, it is difficult to ensure the uniformity of fitting gaps, thereby reducing lubrication efficiency and causing early abnormal wear of the components; In severe cases, it can cause scratches or bite on the friction surface of precision fitting, leading to the occurrence of faults.