On-site diagnosis of fault judgment of hydraulic transmission system of electric hydraulic truck

Before we understand the on-site diagnosis of the fault diagnosis of the hydraulic transmission system of the electric hydraulic truck, we need to understand some conventional methods that are used in most of the hydraulic system fault diagnosis, which are divided into empirical method, test method method, computer method and permutation method. These four methods have their own advantages and disadvantages. As for which method to use, we still need to analyze specific problems.

First, let’s talk about the empirical method. This method can only be done when the staff has a certain amount of work experience. With their years of practical experience, they can judge the failure of the hydraulic transmission system of the electric hydraulic truck. But if it is only based on the judgment of experience, it is easy to lead to blind operation.

Let's talk about the test method. This method is to test the faulty system with a fault detector to determine the cause of the fault. This is very similar to the computer method, which is to use expert system software to diagnose and analyze the hydraulic system of the electric hydraulic truck, but this method is expensive and very complicated to operate. Looking at the replacement method, this method uses the replacement of components or analogy to determine the fault location, but this method has blindness.

Therefore, the four methods mentioned above are not very suitable, but we can combine the above methods organically, such as the combination of empirical method and replacement method, the specific steps As follows:

First understand the failure phenomenon, know how the electric hydraulic truck fails, or check whether the equipment has adjusted the relevant components, and observe the failure phenomenon; then analyze the working principle of the structure and understand the structure of each component , Working principle characteristics, according to the performance of the failure to analyze item by item. Generally, we observe whether the oil level is normal, whether the oil quality and the vibration amplitude of the system are abnormal, etc. Then there is the size of the sound produced by the system, touch the hydraulic components such as pumps, valves and pipelines with your hands, and smell whether the hydraulic oil emits a deteriorated smell.

In general, according to the above process, the hydraulic system failure of the electric hydraulic truck can be effectively judged.