Sikkerhedskoblinger

Sikkerhedskoblinger, often translated as safety couplings or safety clutches, are mechanical devices designed to protect machinery and personnel from damage or injury due to excessive torque or overload conditions. They are integrated into power transmission systems to intentionally break the connection between a driving and a driven component when a predefined torque limit is exceeded. This interruption prevents further operation of the system until the overload condition is resolved and the coupling is reset.

There are several types of sikkerhedskoblinger, each operating on different principles. Shear pin couplings use a pin that is designed to shear off when the torque limit is reached, effectively disconnecting the two shafts. Ball detent couplings utilize a spring-loaded mechanism with balls that disengage when the torque exceeds a set point. Friction couplings, on the other hand, rely on friction plates that slip when the torque becomes too high. Magnetic couplings also exist, using magnetic forces that can be overcome by excessive torque.

The primary function of a sikkerhedskobling is to act as a sacrificial weak link in the system. By failing intentionally, they prevent more expensive or critical components, such as motors, gearboxes, or the driven machinery itself, from being damaged. This also enhances operational safety by stopping the machinery before an uncontrolled failure can occur, which could pose a risk to operators. Proper selection and installation of a sikkerhedskobling are crucial for effective overload protection.