1. Backhoe excavator
Backhoe is the most common type we have seen, backward downward, forced soil cutting. It can be used for excavation below the stop working face. The basic operation modes are: ditch end excavation, ditch side excavation, straight line excavation, curve excavation, excavation at a certain angle, ultra deep ditch excavation, ditch slope excavation, etc.
2. Front shovel excavator
The shovel action form of the front shovel excavator. It is characterized by "moving forward and cutting soil forcibly". The forward shovel has large excavation force and can excavate the soil above the parking surface. It should be used to excavate the dry foundation pit with a height of more than 2m, but the up and down ramps must be set. The bucket of the front shovel is larger than that of the backhoe excavator of the same equivalent. It can excavate Class I to III soil with a water content of no more than 27%. It can cooperate with the dump truck to complete the entire excavation and transportation operation. It can also excavate large dry foundation pits and mounds. According to the difference between the excavation route and the relative position of the transport vehicle, the excavation and unloading methods of the front shovel excavator are as follows: forward excavation and lateral unloading; Forward excavation and reverse dumping.
