Tine harrow penetration depth measuring device, tine harrow and penetration depth control device

摘要

Tine harrow (1) for working soil surfaces, comprising a support frame (3) with a fastening device (11) for fastening to a towing vehicle, several working harrow tines (4) pivotably arranged on the support frame (3) and a tine pressure adjustment unit (8) for changing the pretensioning of the working harrow tines (4), characterized by a tine harrow penetration depth measuring device (2) with a carrier (12), a reference harrow tine (13) attached to the carrier (12) and a distance measuring device (14), preferably adjacent to the Reference harrow tines (13) for measuring the distance to the surface of a soil (10) to be worked, a sensor (16) being provided for detecting the deflection of the reference harrow tines (13), so that the depth of penetration is determined from the distance and the deflection of the reference harrow tines (13) in the soil (10) to be worked can be determined, and the reference harrow tines (13) being the tine harrow one penetration depth measuring device (2) is connected to the tine pressure adjustment unit (8) for joint adjustment of the tine pressure of the working harrow tines (4) and the reference harrow tines (13).