초록 ▼

A device comprising at least three reciprocable piston-shaped bodies, each of which is provided with a drive rod which cooperates, via a drive rod head accommodating sliding bodies, with a plate which is mounted on a rotatable shaft and which can be tilted about a tilting axis which is transverse to

A device comprising at least three reciprocable piston-shaped bodies, each of which is provided with a drive rod which cooperates, via a drive rod head accommodating sliding bodies, with a plate which is mounted on a rotatable shaft and which can be tilted about a tilting axis which is transverse to the center line of the shaft. The means for tilting the plate are formed by piston-shaped bodies which can rotate with the shaft and which can be adjusted in the direction of the shaft, the first of the said bodies being coupled to the plate on the one side of the tilting axis, the other body being coupled to the plate on the other side of the tilting axis. Each of the said piston-shaped bodies bounds a space whereto pressurized liquid can be applied, the masses of the said piston-shaped bodies also serving for balancing the unbalancing forces occurring during operation.

대표청구항 ▼

In a maChine having a wobble-plate drive mechanism, the machine including at least three reciprocating drive pistons and a drive rod extending axially from each of said pistons, the drive mechanism including a central drive shaft rotatable about its axis, a wobble-plate mounted on said shaft, said p

In a maChine having a wobble-plate drive mechanism, the machine including at least three reciprocating drive pistons and a drive rod extending axially from each of said pistons, the drive mechanism including a central drive shaft rotatable about its axis, a wobble-plate mounted on said shaft, said plate defining a plane transverse of the shaft axis and tiltable relative to said axis, said plate being fixed to rotate only with said shaft, said drive rods each having an end slidably engaging said plate, whereby the angle of tilt of the plate corresponds to the stroke of said drive pistons, and control means for tilting said plate, the improvement in combination therewith, wherein said control means comprises two pairs of first and second axially-spaced control pistons, the two control pistons of each pair being coaxially mounted on said shaft and being axially movable relative to said shaft axis and to each other, said control pistons of each pair having adjacent and axially spaced control surfaces defining and bounding a variable volume closed control space, said control means further comprising a source of fluid under pressure, duct means for flowing said fluid into said control spaces for driving said control pistons of each pair axially apart, and two coupling means, each coupling means pivotally connecting the control pistons of one of said pairs with said plate, said two coupling means spaced generally 180°apart around said shaft axis, whereby movement of said control pistons axially apart moves said two coupling means axially apart, thereby tilting said plate; each of said pairs of control pistons having a center of gravity located along the axis of said central shaft and respectively on opposite sides of said plate.