I. Definition and working principle

Mechanical excavator and hydraulic excavator are a kind of mining machinery. Mechanical excavator is the use of sliding track or chain movement, drive the bucket rod and bucket rod accessories mining machinery. Hydraulic digging is the use of hydraulic technology, through the hydraulic cylinder to promote the hydraulic cylinder rod, bucket rod and bucket rod accessories mining machinery. The main difference between mechanical excavator and hydraulic excavator is the difference between the power mechanism and the transmission mechanism.

Mechanical excavator usually uses diesel engine, gasoline engine or motor as power source; The hydraulic digging mainly uses the hydraulic system composed of diesel engine, hydraulic pump and hydraulic motor as the power source and control system.

Ii. Differences

1. Different power sources: mechanical excavators use diesel engines, gasoline engines or motors as power sources, while hydraulic excavators mainly use hydraulic systems composed of diesel engines, hydraulic pumps and hydraulic motors as power sources and control systems.

2. Different modes of operation: the mechanical excavator operates the bucket rod movement through the joystick in the cab, while the hydraulic excavator operates through the hydraulic system drive control system.

3. The maintenance difficulty is different: the maintenance of the mechanical excavator is relatively complex, and the spare parts such as the sprocket need to be lubricates and replaced regularly; The maintenance of hydraulic digging is relatively simple, and only the key components such as hydraulic oil and filter elements need to be replaced regularly.

4. Different work efficiency: the flexibility, operability and efficiency of hydraulic digging are better than that of mechanical digging machines, especially in small Spaces or when fine operation is required.

5. The cost is different: the manufacturing cost and daily use cost of hydraulic digging are higher than that of mechanical digging machines.