Winch drive with electro-magnetic spring brake

20/2/2024

Gearbox with brake for man riding winch

Due to the fact that several certifying bodies have changed their rules for man riding winches, it’s sometimes compulsory to modify a winch which will be used as man riding winch. We were recently contacted by a customer who needed to upgrade a winch for man riding. The applicable certifying body requests a secondary brake directly on the drum and not on the same driveshaft as the main gearbox is acting.

Since the requested brake torque on the drum was quite high for an electro-magnetic spring brake, our customer decided to mount a small winch gearbox inside the drum, on the opposite side of the main gearbox, to reduce the torque for the electric brake.

The project needed to be realized in very short time. Since we assemble Dinamic Oil winch gearboxes in our workshop in Venlo and our sister company Euro Hubner Benelux has electro-magnetic spring brakes in stock, both on base of Type Approval, we took this challenge together. With the help of the engineers of our customer and some local machining shops, we were able to build the gearbox with special input, customer intermediate flange and bush to directly connect the electric brake. In the workshop of Euro Hubner Benelux we added an anti-condensation heating due to the environmental conditions and a proximity switch to give a signal when the brake is lifted.

Even though it was Christmas period and the set needed to be blasted and painted in a 3 layers offshore coating, we managed to realize it in 3 weeks time. Teamwork makes the dream work!