Form of shovel action of front shovel excavator. Its characteristic is "advance, forcibly cut the soil". The front shovel has great digging force, which can dig out the soil above the parking surface. It is suitable for digging dry foundation pits with a height greater than 2m, but it must be equipped with an up-and-down ramp. The bucket of the front shovel is larger than that of the equivalent backhoe excavator, which can dig one or three kinds of soil with water content less than 27%, cooperate with the dump truck to complete the whole excavation and transportation operation, and can also dig large dry foundation pits and mounds. According to the different relative positions between the excavation route and the transport vehicle, there are two ways to excavate and unload the soil: front excavation and side unloading; Forward excavation and reverse unloading.