Knowledge

The energy-saving link of hydraulic excavator mainly lies in the hydraulic pump. Based on the different circuits of hydraulic pump, this paper discusses the energy-saving …

Due to the wide working range of excavators, about 65 ~ 70% of the earthwork in the world is completed by excavators, which makes excavators …

The typical working conditions of hydraulic excavators are excavation, full load lifting and slewing, unloading and no-load reset and slewing. As an important part of …

At present, the classification of braking system includes: hydraulic single and double circuit braking system, pneumatic single and double circuit braking system, pneumatic / hydraulic …

The main actuator actions of hydraulic excavator include: whole machine walking, turntable turning, boom lifting, stick retracting, bucket loading and unloading. These actions are combined …

There are two main defects in the use of wheel excavator driving axle gear, one is tooth surface wear and fatigue pitting, even broken teeth. …

Jack itself is a common tool, which is used to repair the slewing bearing, ring gear and other parts of the excavator, or to repair …

The connection dimensions of boom and platform and boom and stick are exactly the same as the corresponding dimensions of the whole boom, so as …

The single pipe braking system is mainly composed of hydraulic pump, overflow valve, filter, single pipe energy storage and filling valve, pressure switch relay, accumulator, …

The hydraulic actuator of boom, stick, bucket, bucket, bucket opening and walking device is supplied by four main working pumps. Each main working pump controls …