摘要:
A universal joint comprising, first and second rotating members each having a rotating axis, and arranged end to end with a distance therebetween. A guide pin is providing having a spherical portion at one end thereof and rotatably and swingably held by the first member at the rotating axis. The other end of the guide pin is slidably inserted in the second member along the rotating axis, and a pair of driving pins are arranged symmetrically with respect to the guide pin, and each having one end swingably and radially slidably held by the first member and the other end inserted in the second member, one end of each the driving pin being slidable axially.
摘要:
An axial piston machine has a control mirror body with a cylinder drum adjustable in both directions from a middle position with zero speed stroke of the pistons. An orifice in a guide surface (which at a given time is connected with a suction duct and a pressure duct) is divided into a pair of orifices connected via connecting ducts with the respective duct. The pair of orifices are symmetrical in the direction of tilt of the mirror member with its middle position in the guide surface. The orifice of each pair which at a given time is located against a momentary tilting direction and not covered by the mirror member is disconnected by a closing device from the associated suction or pressure duct.The constructively possible area of tilt of the mirror member and thereby of the cylinder drum is considerably enlarged. The control mirror member need not cover the entire pressure-side aperture of the guideway in every position of tilt. The invention has utilized the realization that in the middle position of the cylinder drum, that is, when the pistons do not carry out a stroke, neither does a conveyor current occur and that this results in an area in which all orifices in the guideway which lead to the suction and pressure duct may be closed simultaneously without disadvantage. In a practical embodiment of the invention the orifices of each pair of orifices in the guide surface are spaced from each other in the direction of tilt so that in the middle position (zero stroke position) of the control mirror member none of the orifices is connected with the ducts to the control ports in the mirror member.
摘要:
In an axial piston-type machine (pump, motor or transmission) with a pivotable cylinder block and axial pistons in articulated connection with the drive flange, the cylinder block is pivotable in every position about an instantaneous axis disposed outside the axes of the cylinder block and drive flange. The drive flange is in driving connection with the cylinder block through toothed members, particularly those having teeth positioned on toric surfaces, whose mesh is determined by the angle-bisecting plane between drive flange axis and cylinder block axis.
摘要:
A HYDRAULIC-MACHINE ARRANGEMENT FOR TWO OR MORE HYDRAULIC UNITS (E.G. PUMPS OR MOTORS) WHEREIN AT LEAST TWO SUCH UNITS ARE MOUNTED IN A COMMON SWINGABLE FRAME SUCH THAT THE FRAME, UPON ANGULAR DISPLACEMENT ABOUT ITS AXIS, ANGULARLY SHIFTS THE CYLINDER DRUMS OF THE AXIAL PISTON PUMP OR MOTOR FROM ITS NULL POSITION TO AN OPERATIVE POSITION, THE PIVOTAL FRAME HAS HOLLOW PIVOT PINS THROUGH WHICH FLUID COMMUNICATION WITH THE RESPECTIVE AXIAL PISTON MACHINES IS ESTABLISHED.