Excavator Machine What Is The Name Of This Construction Site Machine?

What is the name of this construction site machine? - excavator machine

I have a picture of her. I will describe. Basically, it looks like a bulldozer, with the exception of the tip of the outstretched hand "is not a pit, but connected on a kind of punch thing. But not for holes to be exact, it is often the concrete road / floor coverings and a new concrete slab to break again established. I do not believe that the practice is called a bulldozer.