Machine for descaling cellular bodies of an air-water heat exchanger

A machine for descaling the cells of a cellular trickling-water body employed in an air and water heat exchanger, the cells having a longitudinal direction, the machine comprising at least one tool, with an active tip, mounted so that the at least one tool can move on a frame between two positions in the longitudinal direction, the active tip being carried by an end of a rod, a body of an actuator being mounted so that it can move relative to the frame along a longitudinal axis of the rod, a piston integral with the rod defining in the body a first chamber permanently connected to a source of pressurized fluid, and a second chamber through which the rod passes and which is in fluidic communication with the first chamber as long as the rod is at least partially retracted into the body of the actuator and isolated from the latter and connected to an outlet when the rod is in its furthest extended position outside the body,

• wherein the body of the actuator is movably connected with respect to the frame by means of a carriage mounted so as to slide on the frame in a direction parallel to the axis of the actuator, the connection between the carriage and the actuator body being elastically extendable along this axis over a specified and self-adjusting amplitude in a plane perpendicular to this direction, and
• wherein the abovementioned connection has a plurality of inelastic and deformable upper and lower links forming stays between the carriage and the body of each actuator, the length of the links being such that, when the upper links are straight, the lower links are bent and vice versa, the break points of the links being joined by elastic members which effect the suspension of a needle on the carriage with a specified degree of tension in the links.