A locking construction for agricultural machines comprises a top bracket 2 to be clamped to an agricultural machine framework, and a counter-bracket 1 cooperating with the top bracket to lock to the framework a further functional element, the construction comprising moreover a clamping or locking device 3, engaging the counter-bracket and top bracket to lock the functional element on the framework, the locking device preferably consisting of a locking bolt, while the functional element comprises a spring or resilient tooth element for processing soil either directly or through a disc element.
