Wheel Loaders are usually used in construction sites, ports, docks, stations, cargo yards and other harsh environments to shovel or transport loose soil, sand, sand, coal, garbage and other materials over short distances. Because the loader is always driven or operated under various complicated conditions, the working environment is quite harsh, and factors such as design, manufacturing, and use greatly reduce the reliability of the loader. The following is a brief introduction to the cause of the loader failure:
Design flaws
The structure of the loader is relatively complicated, and the working conditions of each component and part vary greatly. Due to the designer's lack of full consideration and understanding of the working conditions of the loader, some components cannot fully adapt to various operations during operation. The need for operating conditions exposed the weaknesses of the design and caused failures during use.
2. Assembly manufacturing defects
During the processing of transport machine parts, due to the lack of strict compliance with the process requirements or the unreasonable process itself, the geometric or mechanical properties of the loader parts cannot be guaranteed, which will cause premature damage to the loader parts.
During the assembly process, due to improper adjustment or improper adjustment, the supporting clearance of the bearing parts cannot meet the necessary technical conditions, destroying the mutual position of the parts assembly, causing early damage to the parts and affecting the technical conditions of the loader. In addition, due to the lack of necessary testing methods before assembly, the loader may be damaged due to improper selection and inspection of parts.
3. Influence of external conditions during operation
The external conditions that affect the operation of the loader are mainly the weather environment (high temperature, tropical, high altitude, etc.), working place and working object. Excessive temperature may cause poor heat dissipation of the diesel engine, cause the machine to overheat, reduce the viscosity of the lubricating oil, and reduce the lubricating effect. When the temperature is too low, the thermal efficiency of the diesel engine decreases, the economy deteriorates, and the viscosity of the lubricating oil increases, resulting in poor lubrication conditions. Accelerate the wear of parts, and the low temperature will make it difficult to start the diesel engine.
The job site and working objects have a significant impact on the service life of the loader. On bumpy ground, the vehicle collided violently and vibrated. The structural components of the loader are easily damaged. Dense working objects can damage work tools. The gravel and other debris on the scene can scratch the tire and affect its use. life. Excessive dust on the job site will cause premature wear of the diesel engine.
4. Improper operation
Operators are unfamiliar with operating procedures or unskilled, so they cannot operate the machine in a coordinated manner, resulting in damage to the loader mechanism or accidents due to negligence or errors in driving or work.
Overloading of the loader is also the cause of machine damage and even accidents. In the course of work, if it is frequently overloaded or overloaded for a long time, high-intensity operation will cause the temperature of the loader to rise rapidly and the temperature will rise, which will cause premature damage to the loader mechanism.
5. Improper maintenance
Due to the harsh working environment of the loader, it is very important to carry out timely maintenance of the loader. Many major failures of the loader are caused by improper maintenance and maintenance of the loader. If the assembly or adjustment is not performed according to the specified technical requirements during repair or repair, or the use of low-quality loader accessories, it may cause frequent failure of the wheel loader.
