Abstract: In the rapid tool coupling device for digger tools, a tool is provided with two pivots operating as means for hooking-up, the tool comprising: a body provided with mobile hooks which are actuated to achieve stable removable couplings with at least one of the two pivots. At least one plurality of first supports and at least one second support, are predisposed to couple with a corresponding plurality of pairs of the two pivots, which pairs comprise a first pivot and a second pivot, and which can be removably fixed to the body.

Abstract: In the rapid tool coupling device for digger tools, a tool is provided with two pivots operating as means for hooking-up, the tool comprising: a body provided with mobile hooks which are actuated to achieve stable removable couplings with at least one of the two pivots. At least one plurality of first supports and at least one second support, are predisposed to couple with a corresponding plurality of pairs of the two pivots, which pairs comprise a first pivot and a second pivot, and which can be removably fixed to the body.

Abstract: The breaker device for removing the tops of columns comprises a support structure composed of a plurality identical chain elements reciprocally linked by link couplings to form a closed chain which can surround a column which is to be topped. Each chain element bears a jackhammer provided with a plurality of interchangeable breaker punches, of varying lengths. Each chain element exhibits a plurality of holes which are distanced from the link couplings and which are for linking the chain elements. Each hole is aligned with a corresponding hole of an adjacent chain element. A pin is used for blocking adjacent chain elements in predetermined positions. The invention is useful for breaking the stop of a reinforced-concrete column without damaging the reinforcement elements thereof. The device can be adapted to columns having different diameters.

Abstract: The device for rapid tool coupling and release on tool arms comprises a first rapid-attachment organ associated to a tool arm and is provided with at least one tooth and with hollow coupling seatings destined to couple in seatings and also with at least one pivot predisposed on the tool. The rapid-attachment organ is provided with at least a portion of coupling surface destined to couple on contact with at least a portion of plane on the seatings; the coupling surface is oriented in such a way that a perpendicular thereof does not intersect an axis of the pivot coupled in a hollow seating.