Axial piston pump
AssigneeBrueninghaus Hydraulik GmbH
InventorsHeinz Berthold, Ivan Pecnik
Life of this patent
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Abstract
In an axial piston pump of fixed or adjustable displacement having a two-part housing, namely a housing part accommodating the pistons and a connecting part through which the pressure passage and the suction passage extend, the suction passage having a suction opening with a larger cross-section than that of the pressure passage, the connecting part can be mounted to the housing part as desired in two positions turned substantially through 180.degree. about the center axis of the axial piston engine. This construction enables the pump to be adapted to operate with either direction of displacement with little trouble and expense.
Claims13
An axial piston pump of the swash plate type, having a two-part housing, including a housing part accommodating the pistons, and a connecting piece through which the pressure passage and the suction passage extend, wherein the suction passage has a larger cross-sectional suction opening then the pressure passage, the pistons are arranged in a rotatable cylinder drum and a control disc having control openings is arranged between the cylinder drum and the connecting piece, characterized in that the connecting piece can be mounted on the housing part in two alternative positions turned substantially through 180.degree. about the center axis of the axial piston pump;
- and the control disc can be mounted as desired in two mounting positions which, in relation to one another, are turned substantially through 180.degree. about the center axis of the axial piston pump or are turned about a transverse axis extending substantially centrally of the control openings.
An axial piston pump of the swash plate type, having a two-part housing, including a housing part accommodating the pistons, and a connecting piece through which the pressure passage and the suction passage extend, wherein the suction passage has a larger cross-sectional suction opening than the pressure passage, characterized in that the connecting piece can be mounted on the housing part in two alternative positions turned substantially through 180.degree. about the center axis of the axial piston pump;
- and the swash plate is arranged on two bearing parts spaced apart and having free spherical bearing surfaces facing the pistons, loosely between the bearing parts and the pistons, wherein the swivel axis extending through the bearing parts is at a distance (a) from the corresponding direction of force of the pistons and at least one adjusting piston presses loosely against the side of the swash plate remote from the pump pistons.
An axial piston pump of the swash plate type, having a two-part housing including a housing part accommodating the pistons, and a connecting piece through which the pressure passage and the suction passage extend, wherein the suction passage has a larger cross-sectional suction opening than the pressure passage, characterized in that the connecting piece can be mounted on the housing part in two alternative positions turned substantially through 180.degree. about the center axis of the axial piston pump;
- and the swash plate can be adjusted by at least one adjusting cylinder which is connected to the pressure passage within the connecting piece by a connecting passage extending through the housing part and the connecting piece, wherein the connecting passage has, in the region of the connecting piece, two connecting passage sections, of which one connecting passage section in one mounting position and the other connecting passage section in the other mounting position of the connecting piece are in fluid communication with the connecting passage extending in the housing part.
Dependencies are inferred from the claim text.