Hydraulic hoses are an essential component of excavators, serving as necessary equipment for transporting hydraulic oil from the hydraulic pump to the hydraulic control components. Due to the operating characteristics of hydraulic systems, the selection of hydraulic hoses is crucial. Hydraulic hoses are typically made of high-strength inner rubber and outer steel wire, capable of withstanding high pressure. To meet diverse application requirements, there are many types of hydraulic hoses with varying structures.
Generally, hydraulic hoses consist of three layers: inner, middle, and outer. The inner layer is made of rubber, possessing good oil resistance and flame retardancy, capable of withstanding high pressure, corrosion resistance, and excellent aging resistance. It is a vital component of the hydraulic hose. The middle layer is made of wound steel wire, possessing good tensile, compressive, and bending strength, effectively improving the strength of the hydraulic hose. There are two types of outer layers: one is a common polyurethane outer layer, with excellent aging resistance; the other is a high-temperature resistant polytetrafluoroethylene (PTFE) outer layer, possessing good oil resistance, corrosion resistance, and aging resistance, effectively preventing damage to the hydraulic hose caused by high temperatures.
The selection of hydraulic hoses is extremely important. In addition to the structure and materials of hydraulic hoses, their compressive strength and temperature range, as well as the ambient temperature, humidity, and vibration of the installation site, should be considered to ensure normal operation during use. Furthermore, to ensure safe use of hydraulic hoses, their appearance should be inspected during installation for cracks, corrosion, or other defects.
In short, hydraulic hoses are an important component of excavators. The selection and installation of hydraulic hoses should be tailored to the characteristics of the excavator and the operating environment to ensure their proper functioning. Only by meeting the requirements during selection and installation can the normal operation, safety, reliability, and long service life of the excavator be guaranteed.