Solving Overloads
Static and dynamic overloads damage components of the kinematic chain and ropes, shortening their lifecycle and increasing the probability of catastrophic breakage.
Additionally, traditional emergency braking constrains kinetic energy within the hoist’s drive train with the resulting peak overloads reaching more than 5 times the static load torque.
This classic mechanical problem would usually be solved by disengaging the hoist motor from the kinematic chain above a certain torque. In lifting applications however, the risk of a malfunction or under-performance of the caliper safety brake is too high and hoist designers implicitly rely on the whole drive train and service brakes as a back-up, so it cannot be uncoupled safely.
On a MotoSuiveur-Secured hoist, the hoist’s kinematic chain plays no role in holding the load during and after emergency arrests. Integrating a torque limiter between the hoist motor and gearbox is now risk-free.
Static and dynamic overloads ocurring during hoist operation or during arrests are cut to the equivalent of 110% of Safe Working Load (SWL), efficiently preserving the integrity of the hoist and crane structure.