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US 7,334,514 B2Granted
Balanced fluid-powered modular actuation system
AssigneeJianchao Shu
InventorJianchao Shu
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AssigneeJianchao Shu
InventorJianchao Shu
Estimating the term…
This invention provides a modular, efficient and self-feedback/balance, fluid-powered actuation system. This system comprises two basic modules; actuation module and positioning module, which are directly connected to each other. The actuation modules can be constructed as a triple acting actuator having a novel balanced linear-rotary mechanism converter or a double acting actuator with two novel balance guide bars. The positioning module is constructed as a two-staged, self-feedback/balance positioner with position as a variable for controlling positions of an output shaft of the actuation modules. An input shaft in the positioning module is operated by three types input signals. This system also provides a rotary force to actuate and control different rotary valves with lighter weight, superior seal and high accuracy and can be used for quick cycle, high vibration applications or other critical services.
An actuation assemblies comprising;
An actuation assemblies comprising;
A motion conversion-transmission means in an actuation system operatively associated with three horizontal pistons and a vertical output shaft for converting movements between reciprocating movements of said pistons and a rotary movement of said output shaft, said means comprises a geared bushing attached to said output shaft, said geared busing is engaged with three geared blocks for converting movements and receive a plurality of rotatable pins, each of said geared blocks is linked to each of said pistons by a piston rod, said conversion-transmission means also has at least a guide plate being vertically adjacent to said geared bushing, said guide plate has a plurality of slots which are equally spanned for constraining and supporting said pins.
Dependencies are inferred from the claim text.