Knowledge

The maximum design working pressure of hydraulic system of excavator is 31.5Mpa. The hydraulic actuators of the boom, stick, bucket, bucket opening and walking device …

Excavator mainly works in the field, with short and complex working cycle, excessive load and frequent overload, high dynamic response requirements, complex control algorithm, control …

The characteristic of the hybrid system is that the internal combustion engine system and the motor drive system each have a set of mechanical speed …

The main reason that restricts the development of hydraulic excavators in China is the lack of advanced and effective test methods and equipment, which leads …

1. Hydraulic pump failure In general, hydraulic excavators use double pumps, and the running deviation is usually caused by the failure of one of the …

Due to the small size, light weight, compact structure, flexibility and efficiency of small excavator, it is very suitable for small-scale earthwork construction projects. Small …

When the whole hydraulic excavator fails to operate, it is often necessary to follow the following sequence to diagnose the fault: 1. Check the amount …

(1) Small size, light weight, complete functions, easy transfer. (2) High technical performance. The design and manufacturing technology of modern hydraulic excavator has been well …

The data fusion technology is introduced into the fault diagnosis of hydraulic system of hydraulic excavator. By testing the pressure and flow of each point, …

The throttle system overcomes the load pressure by the pressure of the oil return throttle. Its speed regulation characteristics are affected by the load pressure …