Method for permanent adjustment of springy elements tension for applications in the conditions of dynamic loads

摘要

The object of the invention is to regulate permanently the voltage of the spring elements for applications under dynamic load conditions,In particular, in multi-use ball fuses, the mechanism draws horns, characterised by the insertion of the spring elements (5) in the nest (3) and the first twisting of the appropriate screw (1) by means of a dynamometer key, and the torque value is pre-selected experimentally or analytically by analysing the relationship between the torque and the torque of the screw and is equivalent to achieving the torque height corresponding to the target torque, the peak voltage of the compression elements and this value shall be within the range of 30 to 150 Nm,then unscrew the screw (1) by the specified number of revolutions, in order to maintain an adequate working jump pushed by the ball spring (7) and the pad (6),which results directly from the characteristics of the device to enable the ball safety component (4) to be unscrew freely, and finally the bolt (1) is secured against change of position and twisting by means of a special screw (2) forming a single integrated and monolithic special screw.