Excavator

The utility model provides an excavator, and relates to the technical field of buildings. According to the scheme, the excavator comprises a base body, a driving device, a cab and an excavating assembly. The base body is provided with a driving device and a cab and connected with an excavating assembly. The excavating assembly comprises a big arm and a small arm, one end of the big arm is rotationally connected with the base body, and the other end of the big arm is rotationally connected with the small arm. A large arm oil cylinder is installed between the large arm and the base body, a small arm oil cylinder is installed between the large arm and the small arm, the small arm is provided with a plurality of installation parts used for being matched with the small arm oil cylinder, the small arm oil cylinder is matched with any one installation part, and the end, away from the large arm, of the small arm is connected with a bucket. According to the utility model, the collision with a cab and a big arm can be