The hydraulic pump of excavator is a power component in the hydraulic transmission system. It is driven by the prime mover (motor or engine). The mechanical energy is taken from the output power of the prime mover (motor, internal combustion engine, etc.) and converted into the pressure energy of the fluid to provide pressure oil for the system. Then, in the place where work needs to be done, the actuating element (hydraulic cylinder or hydraulic motor) converts the fluid pressure energy into mechanical energy output. In short, it is a component that provides pressure for the entire hydraulic system. What is the difference between the front and rear hydraulic pumps of the excavator?
Differences between front pump and rear pump of excavator hydraulic pump:
1. Different functions
The front pump mainly supplies oil to the stick, swing, left travel, and boom. The rear pump mainly supplies oil to the bucket, boom and right travel. Under the real machine, the two-way action of the stick, the lifting of the boom, and the digging of the bucket (optional) are supplied by two pumps. The front and rear left and right pumps of the hydraulic pump are interchangeable, just like the handle, which is not fixed, except that the action of the distribution valve cannot be changed.
2. Different valve plate structures
The hydraulic pump is the power component of the hydraulic system, which is driven by the engine or motor, sucks oil from the hydraulic oil tank, forms pressure oil, and discharges it to the actuator. There are many factors that affect the service life of hydraulic pumps. In addition to the design and manufacturing of the pump itself, it is also related to the selection of pump use related elements (such as couplings, oil filters, etc.) and the operation during commissioning.
According to statistics, about 70% of excavator hydraulic system failures are caused by improper selection, careless use and untimely replacement of hydraulic oil. Therefore, the correct and reasonable use and replacement of hydraulic oil is an important condition to give play to the working performance and economic performance of the excavator and extend the service life of the hydraulic system and its components.
