Elements of the fastenings teams of a device for adjusting the initial and monitoring a posteriori of the elongation

摘要

The invention relates to a device for the initial adjustment and monitoring of the elongation provided with a threaded mounting element (1) of the fact of the clamping of which is subjected to the threaded element, in particular intended to equip the components of the fastenings of security standardized provided with an axial cylindrical bore (2) intended to receive a rod chauffante.le field of application is a potential covers the whole of the mechanical and installations industrielles.les devices according to the invention are characterized in that they comprise a cavity partially delimited by the axial bore (2), at least one of the dimensions of which varies as a function of the elongations submitted by the element (1), the said cavity being completely filled with an incompressible fluid, and in that they comprise the means (6) to measure the pressure variations to which is subjected, this fluid. The cavity will advantageously be partially filled by a rod (10) which may be an electrical resistance.