초록 ▼

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 h

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.

대표청구항 ▼

I claim: 1. An actuation assemblies comprising; (a) A body having a vertical bore extending to three horizontal passageways; (b) Three pistons, each piston slidably positioned in a respective one of said passageways for reciprocating; (c) An output shaft rotatably positioned within said body; (d) A

I claim: 1. An actuation assemblies comprising; (a) A body having a vertical bore extending to three horizontal passageways; (b) Three pistons, each piston slidably positioned in a respective one of said passageways for reciprocating; (c) An output shaft rotatably positioned within said body; (d) A conversion-transmission means operatively associated with said pistons and said output shaft for converting movements between reciprocating movements of said pistons and a rotary movement of said output shaft, said conversion-transmission means comprises a roller attached to said output shaft, said roller has three, equally spanned, axial openings for converting movements, respected one of said openings is engaged with a rotatable bearing having an internal wall engaged with a rotatable pin, respected one of said pins is linked to respected one of said pistons by a piston rod, said conversion-transmission means also has at least a guide plate being vertically adjacent to said roller, said plate has a plurality of slots which are equally spanned for constraining and supporting said pins. 2. The actuation assembly of claim 1, wherein said roller is constructed with a plurality of forms including one upper piece and one lower piece, said upper piece and said lower piece are symmetric and attached to said output shaft. 3. The actuation assembly of claim 1, wherein said output shaft and said roller are constructed as one piece. 4. The actuation assembly of claim 1, wherein said bearing, said pins and said roller and said output shaft are either made out of full magnetic materials or partial magnetic materials. 5. The actuation assembly of claim 1, further including a position means for controlling a rotational movement of said output shaft, said position means includes a pair of screws threaded through said body into a moon-shaped groove defined by two stoppers on said output shaft, said screws with said moon-shaped groove are constructed with a plurality of types of limit switches. 6. An actuation assemblies comprising; (a) A body having a vertical bore extending to three horizontal passageways; (b) Three pistons, each piston slidably positioned in a respective one of said passageways for reciprocating; (c) An output shaft rotatably positioned within said body; (d) A conversion-transmission means operatively associated with said pistons and said output shaft for converting movements between reciprocating movements of said pistons and a rotary movement of said output shaft, said conversion-transmission means comprises a geared bushing attached to said output shaft, said geared bushing is engaged with three geared blocks for converting movements and receive a plurality of rotatable pins, respected one of said geared blocks is linked to respected one 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. 7. The actuation assembly of claim 6, wherein said output shaft and said geared bushing are constructed as one piece. 8. The actuation assembly of claim 6, wherein said geared blocks, said geared bushing and said output shaft are either made out of full magnetic materials or partial magnetic materials. 9. The actuation assembly of claim 6, further including a position means for controlling a rotational movement of said output shaft, said position means includes a pair of screws threaded through said body into a moon-shaped groove defined by two stoppers on said output shaft, said screws with said moon-shaped groove are constructed with a plurality of types of limit switches. 10. 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.