12results about "Servomotor parallel arrangements" patented technology

The subject matter of this specification can be embodied in, among other things, an apparatus that includes a first assembly having a first piston rod having a first rod end, a second assembly arranged substantially parallel to the first piston assembly and having a second piston rod having a second rod end, an end assembly defining a first aperture configured to receive the first rod end, and a second aperture configured to receive the second rod end, a first retaining cap configured to affix to the first rod end, abut the end assembly when affixed to the first rod end, and retain the first rod end within the first aperture, and a second retaining cap configured to affix to the second rod end, abut the end assembly when affixed to the second rod end, and retain the second rod end within the second aperture.

A servo valve includes a housing defining a wetted zone for holding a fluid. The servo valve includes a fluid transfer valve assembly disposed in the housing. The fluid transfer valve assembly comprises a fluid supply port and a control port. A spool is arranged to control flow of fluid through a fluid pathway from the fluid supply port to the control port. The spool is movable along a spool axis. A lever is pivotally mounted to the housing and engaged with the spool via a hinged connection. The lever is arranged to pivot and axially move the spool along the spool axis. A seal is provided to isolate the wetted zone from a non-wetted zone. The spool is positioned within the wetted zone and the lever is positioned at least partially within the wetted zone.

The subject matter of this specification can be embodied in, among other things, an apparatus that includes a first assembly having a first piston rod having a first rod end, a second assembly arranged substantially parallel to the first piston assembly and having a second piston rod having a second rod end, an end assembly defining a first aperture configured to receive the first rod end, and a second aperture configured to receive the second rod end, a first retaining cap configured to affix to the first rod end, abut the end assembly when affixed to the first rod end, and retain the first rod end within the first aperture, and a second retaining cap configured to affix to the second rod end, abut the end assembly when affixed to the second rod end, and retain the second rod end within the second aperture.

An actuator system can include a first actuator (101a), a second actuator (101b), a first actuator control device (103a) configured to control the first actuator, a second actuator control device (103b) configured to control the second actuator, a shared redundant actuator control device (103c), and at least one transfer device (105) operatively connected to the first, second, and shared redundant actuator control devices. The at least one transfer device can be configured to be operated to select between a first control mode where the first actuator control device is operatively connected to the first actuator to control the first actuator and the second actuator control device is operatively connected to the second actuator to control the second actuator, a second control mode where the shared redundant actuator control device is operatively connected to the first actuator to control the first actuator and the second actuator control device is operatively connected to the second actuator to control the second actuator, and a third control mode where the first actuator control device is operatively connected to the first actuator to control the first actuator and the shared redundant actuator control device is operatively connected to the second actuator to control the second actuator.

The subject matter of this specification can be embodied in, among other things, a method that includes controlling, by a first fluid valve, a first fluid flow to a first fluid actuator, actuating, by the first fluid actuator, an output, controlling, by a second fluid valve, a second fluid flow to a second fluid actuator, and actuating, by the second fluid actuator, the output.

The utility model discloses an integrated multi-force air cylinder which comprises a plurality of air cylinder assemblies combined in parallel. Each air cylinder assembly comprises a plurality of single air cylinders combined in series, at least one series connection assembly penetrating through all the single air cylinders one by one, a base fixed to the first end of the series connection assembly and a rear cover fixed to the second end of the series connection assembly. Each single air cylinder comprises a cylinder barrel provided with an inner cavity and a piston assembly arranged in the inner cavity of the cylinder barrel. In the same air cylinder assembly, the piston assemblies of every two adjacent single air cylinders are connected in an inserted mode. Multiple-force output is achieved by connecting the single air cylinders in series to form the air cylinder assemblies, the integrated multiple-force air cylinder is formed by connecting the air cylinder assemblies in parallel, multi-station machining can be carried out at a time, the overall structure is compact, working efficiency is improved, occupied space for installation is reduced, installation and debugging difficulty is lowered, and air path design can be simplified.

This invention provides an electro-hydraulic hybrid actuator capable of maintaining balance of moments between parallel-arranged electric actuators and hydraulic actuators. [Solution] An electro-hydraulic hybrid actuator comprising a hydraulic drive unit 1, electric drive units 2a, 2b, a thrust connection unit 3 that receives thrust from the hydraulic drive unit and the electric drive unit, and an operating output unit 5a operated by the thrust connection unit, characterized in that at least two of the electric drive units are symmetrically arranged based on the arrangement of the hydraulic drive unit. By arranging the multiple electric drive units symmetrically around the axis of the hydraulic drive unit, an electro-hydraulic hybrid actuator is obtained that can maintain a balance of moments between each drive unit.

The utility model relates to the technical field of parallel hydraulic cylinders, in particular to a parallel hydraulic cylinder structure which comprises a mounting seat, and a first hydraulic cylinder is mounted on one side of the top end of the mounting seat. The first hydraulic cylinder and the second hydraulic cylinder are symmetrically mounted on the two sides of the mounting base, the support is mounted in the middle of the top end of the mounting base, and meanwhile the forced synchronization assembly composed of the first connecting rod, the connecting column, the synchronous rotating rod and the second connecting rod is jointly mounted between the support and piston rods of the first hydraulic cylinder and the second hydraulic cylinder; when the parallel hydraulic cylinder is used, synchronous stretching and retracting of piston rods on the first hydraulic cylinder and the second hydraulic cylinder can be achieved under the action of the forced synchronization assembly, and the defect that stretching and retracting of the first hydraulic cylinder and stretching and retracting of the second hydraulic cylinder are not synchronous due to adjustment errors of an oil inlet flow valve and an oil outlet flow valve is overcome. Therefore, when the parallel hydraulic cylinder is used, the problems of equipment damage, poor precision, large energy consumption and the like cannot be caused, and the reliability is better.

Apparatus and associated methods relate to a transfer valve with dual authority control porting. The transfer valve has a hydraulic cylinder having a cylindrical wall extending between first and second ends. The cylindrical wall has hydraulic ports therethrough for facilitating operation of the transfer valve. Within the hydraulic cylinder, a bilaterally moveable spool is axially moveable between first and second positions. The bilaterally moveable spool defines hydraulic chambers within the hydraulic cylinder. In the first position, the hydraulic chambers and the hydraulic ports form a fluidly conductive path between a first source and a first application, and another between a second source and a second application. In the second position, the cavities and the hydraulic ports form a fluidly conductive path between the first source and the second application, and another between spool positioning cavities of the transfer valve and the first application.

The subject matter of this specification can be embodied, inter alia, in an apparatus comprising: a first assembly having a first piston rod having a first rod end; a second assembly disposed substantially parallel to the first piston assembly and having a second piston rod having a second rod end; an end assembly defining a first aperture configured to receive the first rod end and a second aperture configured to receive the second rod end; a first retention cap configured to attach to the first rod end, abut the end assembly when attached to the first rod end, and retain the first rod end within the first aperture; and a second retention cap configured to attach to the second rod end, abut the end assembly when attached to the second rod end, and retain the second rod end within the second aperture.

A hydraulic system having two hydraulic circuits 6, 7, each having a consumer 14, 15 and a variable pump 2, 3. The two pumps are jointly driven by a common motor 4. The two circuits can be selectively

The subject matter of this specification can be embodied in, among other things, an apparatus that includes a first assembly having a first piston rod having a first rod end, a second assembly arranged substantially parallel to the first piston assembly and having a second piston rod having a second rod end, an end assembly defining a first aperture configured to receive the first rod end, and a second aperture configured to receive the second rod end, a first retaining cap configured to affix to the first rod end, abut the end assembly when affixed to the first rod end, and retain the first rod end within the first aperture, and a second retaining cap configured to affix to the second rod end, abut the end assembly when affixed to the second rod end, and retain the second rod end within the second aperture.