Tool for the mechanical treatment of a concrete floor

A tool for mechanical treatment of a concrete floor, with a power trowel actuator, said actuator comprising one or more operating heads wherein several attachment arms perpendicular to each other are attached, trowel floating blades coupled to the attachment arms and the tool coupled in a removable manner with each of said trowel floating blades, wherein the tool has a substantially flat and elongated body comprising first and second elements for coupling and locking of the tool on a quick coupling principle for immovable engagement with the trowel floating blade, the first elements being provided with guide channels on opposite sides of the tool and wherein the trowel floating blade's opposite side edges are capable of being slid in a longitudinal direction of the tool and the trowel floating blade;

• and the second elements being provided by a locking/retaining projection present at an end edge of the tool's body, wherein the projection is disposed at an end of a flexible body portion separated with kerfs from the body of the tool and protruding in the longitudinal direction from the body's rear edge, and wherein the projection, in process of sliding the tool relative to the trowel floating blade in the longitudinal direction, attaches against a rear edge of the trowel floating blade to retain the tool on the trowel floating blade during operation.