Integrated brake in hydraulic motor for winch applications

Abstract: The company named Bosch Rexroth, previously Hägglunds drives, in Mellansel, Sweden develops, produces and sells radial piston hydraulic motors for industrial use, some are used to drive winches. The winch application mostly needs a brake to function as a parking brake and emergency brake. The company offers brakes that are installed as external assemblies. This thesis work is done to finding brake concept solutions that requires less space and doesn’t add as much to weight and cost and that could be better integrated in the application. The steps to achieve this includes evaluating the needs, generating new brake concepts, refining these, evaluating the concepts found, refining the best concept and finally presenting the result. The brake concept found to be the best of the set generated is a slightly altered drum brake that, as an example, is integrated into the winch drum and has the potential to have a shorter response time than concepts used today.