What Are The Main Differences Between The Operating Characteristics And Application Scope Of The Shovel And Backhoe?

Shovel excavator, excavator shovel action form. It is characterized by "forward upward, forced cutting soil". Positive shovel has large excavation force and can excavate the soil above the stop surface. It is suitable for excavating dry foundation pit with a height greater than 2m, but it must be equipped with upper and lower ramps. The bucket of the shovel is larger than that of the excavator with the same equivalent backhoe. It can excavate the third-class soil with the water content of not more than 27%, and cooperate with the dump truck to complete the whole excavation and transportation operation. It can also excavate large dry foundation pits and mounds.

According to the difference of the excavation route and the relative position of the transport vehicle, there are two ways of excavation and unloading of the backhoe: forward excavation and lateral unloading; Forward excavation and reverse unloading compared with other shovel forms are as follows:

(1) Backhoe: It is characterized by "backward and downward forced cutting of soil". The excavation force is small and can excavate three types of soil below the stop surface. It is suitable for excavation of foundation pit, base groove and pipe trench with a depth of less than 4m, and also suitable for excavation of wet soil, soil with large water content and below the groundwater level and soil with higher groundwater level. There are two ways to open backhoe: ditch end excavation and ditch side excavation.

(2) Pull shovel: the feature of excavation is "backward downward, self-cutting soil", its excavation radius and depth are large, can excavate the soil below the stop surface, suitable for excavation of large and deep foundation pit or underwater excavation.

(3) Grab shovel excavator: digging is characterized by "straight up and straight down, self-cutting soil", which is suitable for digging narrow and deep foundation pit or water silt, especially for underwater digging, hard soil can not be used to grab shovel construction.