With zero foundation, the training cost is about 6000-8000 yuan, and the training time is about one month (30 days).

I also majored in excavators, so I have some experience on how to learn links. In addition to having good schools and teachers and professors, it is particularly important whether I am willing to study hard and have talent. Actually, learning excavator is not as simple as I thought.

Excavator knowledge: The working device is a device that directly completes the excavation task. It consists of boom, bucket and bucket. The lifting and lowering of the boom, the extension of the boom and the rotation of the bucket are all controlled by reciprocating double-acting hydraulic cylinders.

In order to meet the needs of different construction operations, hydraulic excavators can be equipped with a variety of working devices, such as digging, lifting, loading, leveling, clamping, bulldozing, impact hammer and other working tools. The rotary walking device is the body of the hydraulic excavator, and the upper part of the turntable is provided with a power device and a transmission system. The engine is the power source of the hydraulic excavator, so diesel oil can be used in convenient places, and motors can also be used instead.

The hydraulic transmission system transmits the power of the engine to the executive elements such as hydraulic motor and hydraulic cylinder through the hydraulic pump, and pushes the working device to move, thus completing various operations.

Take PV-200 hydraulic excavator widely used in construction sites as an example. The machine adopts an improved open center load sensing system (OLSS). The system reduces the power output of the engine by controlling the swash plate angle (output flow) of the swash plate variable piston pump, thus reducing the fuel consumption, and is an energy-saving system.

The characteristics of the hydraulic system are: constant torque control, which can keep the driving torque of the hydraulic pump constant; Unloading control can reduce the unloading loss of working hours; Oil quantity control can reduce the output flow of hydraulic pump in neutral and fine-tuning control, and reduce power loss.

If in the actual learning process, we must strictly follow the teacher's requirements and instructions, that is to say, we must be obedient. Besides, we should have enough patience and be willing to endure suffering and loneliness. Only in this way can we really learn the excavator major well.