Ground height detection device and harvester provided with same

The utility model provides a ground height detection device and a harvester provided with the same. The ground height detection device comprises a ground profiling component, a corner amplifying mechanism, an angle sensor and a control unit, the ground profiling component comprises profiling assemblies and swing arms which are symmetrically installed. Each profiling assembly comprises a sliding plate, a first connecting rod and a second connecting rod. The sliding plate comprises a sliding rod and a raised plate; the sliding plate is connected with one end of a first connecting rod; the otherend of the first connecting rod is connected with one end of a second connecting rod; the other ends and the middle parts of the two second connecting rods are rotationally connected through rotatingshafts II respectively; the rotating shaft II is connected with one end of each swinging arm, and the other end of each rotating arm is connected with the rotating shaft I; the corner amplifying mechanism is connected with the