Planetary Two-Speed, Automatic Brake Concept for Winch Drives

700727

02/01/1970

Event
Farm, Construction, Industrial Machinery and Powerplant Meetings
Authors Abstract
Content
Two disc type clutch packs serve a dual purpose in the TULSA two-speed planetary winch drive. In the driving mode of operation either high or low clutch is hydraulically selected to transmit power to the planetary system. In the “holding” or stopped mode of operation, the high and low clutch packs interact automatically by spring force to provide a static brake. Either one of two mechanical power flow routes through a planetary system is hydraulically selected to obtain the two-speed operation. When the two power flow routes are simultaneously restrained from rotation a lock-up of the planetary reduction is effected to provide the static load brake. Dynamic braking is provided by a counterbalance valve in the hydraulic system.
This paper discusses the detailed operation and basic design elements involved in developing the patented two-speed planetary transmission.
Meta TagsDetails
DOI
https://doi.org/10.4271/700727
Pages
8
Citation
Shaffer, J., "Planetary Two-Speed, Automatic Brake Concept for Winch Drives," SAE Technical Paper 700727, 1970, https://doi.org/10.4271/700727.
Additional Details
Publisher
Published
Feb 1, 1970
Product Code
700727
Content Type
Technical Paper
Language
English