The working process of the hydraulic transmission system of the electric material handler

The hydraulic system of the electric material handling vehicle is an important part of the equipment, and its steering system and working devices are driven by the hydraulic system. Therefore, the quality of the hydraulic system of the equipment will directly affect its performance. In fact, the reason for the failure of the hydraulic system is not as complicated as we think, and most of the problems lie in the execution structure. However, it is not easy to find out the specific fault location and the cause of the fault, because there are many reasons for the fault, and we need to analyze the specific problems.

And another point that has to be mentioned is that the hydraulic transmission failure of the electric material handler is very concealed, which also brings a lot of trouble to the maintenance personnel. In the industry, there are many ways to check for faults, all we care about is the reliability of the diagnosis. The fault diagnosis methods of the hydraulic system of common pallet trucks are as follows.

The failure rate of the hydraulic system of the electric material handler can generally divide the working process of the hydraulic system of the pallet truck into three stages: the initial stage, the middle stage of operation and the later stage of operation.

In the early stage of electric material handling vehicles, when a new equipment or an overhauled equipment system just begins to operate normally, the failure rate is relatively high, mainly because The design level of the equipment may not be perfect, the selection of components is still lacking or the quality is not enough. If the components and pipelines are not cleaned thoroughly or improperly assembled, there will be failures such as vibration, leakage, unstable system pressure, unstable movement of the actuator and excessive temperature rise. Don't worry about this situation, as long as proper solutions are taken, the failure rate will drop.

The failure rate of the electric material handling vehicle in the middle stage of operation is very low, but even if there is a failure, most of the reasons are caused by the contamination or deterioration of the hydraulic oil. Because the dirt in the hydraulic oil will block the throttling holes or throttling gaps of the components, which will change the working performance of the system and cause the components to malfunction or fail.

The electric material handler is approaching the overhaul period in the later stages of operation. The wear of hydraulic components is very serious, and at the same time, the wear or aging of seals makes the failure rate gradually increase, which is mostly manifested in the increase of external leakage, the decline of system efficiency and the slow action.