摘要:
Hydraulic motor with propulsion members (10; 110) located between an eccentric cam (3; 103) associated with a shaft (2,102) and a counter-element (1b;200), said propulsion members (10;110) consisting of two elements (11,12;111;112) slidable telescopically with respect to one another in the longitudinal direction and having annular bearing shoulders (11a,12a;111a,112a) kept pressed against corresponding sliding-contact surfaces (3a;103b,1a;201a) of said eccentric cam (3;103) and counter-element (1b,200) by means of associated resilient means (16), wherein said resilient means (16) are located outside the said propulsion members (10;110) and arranged between said annular edges (11a,12a;111a,112a) and associated means (13,14,17,18;113,114,117,118) for mechanically retaining them.
摘要:
The invention relates to an axial piston pump having a swash-plate type construction, in particular for hydraulic systems, comprising a cylinder drum (3) which can be rotationally driven about a rotational axis (7) in a pump housing (1) and in which pistons (9) are arranged in an axially displaceable manner, supporting by means of the actuation end thereof (11) which is accessible from the outside of the cylinder drum (3), at least indirectly a swash plate (15), said swash plate can be pivoted by means of an adjusting device (21) to the desired angles of inclination with respect to the rotational axis (7) for adjusting the stroke of the piston (9) and also the fluid system pressure generated thereby. Said adjusting device comprises an adjusting piston (35) in a hydraulically actuated adjusting cylinder (31), the movement thereof can be transmitted to the swash plate (15) by means of at least one driven connection comprising a pivot joint (37, 39; 29, 43), characterised in that the pivot joint is formed by a ball joint (37, 39) which is arranged between the piston (35) and the piston rod (41) of the adjusting cylinder (31).
摘要:
The invention relates to an axial piston swash plate pump, in particular for hydraulic systems, comprising a cylinder drum (1) which can be rotationally driven about an axis (15) in a pump housing (7), in which pistons (21) are arranged in an axially displaceable manner supporting, by means of the actuation end thereof (31) which is accessible from the outside of the cylinder drum (1), at least indirectly a swash plate (3), said swash plate being pivotable to the desired angles of inclination with respect to the axis (15) in order to adjust the stroke of the piston (21) and also the fluid system pressure generated thereby. Said swash plate (3) is mounted, for the pivotable movements thereof, on the pump housing (7) by means of a swash plate bearing (39, 41); characterized in that a supply device (5), which enables a fluid which is at a system pressure to travel at least to the swash plate bearing (39, 41), is provided.
摘要:
A method for coating a pump component (23, 31), in particular a part of an axial piston pump (7), said method having the steps of: providing a blank of the component (23, 31); providing at least one recess in the blank; filling a powdery coating material into the associated recess; melting the coating material under a protective gas atmosphere and material-removing processing of the blank to form at least one sliding and/or bearing surface (6) from the coating.
摘要:
Die Erfindung betrifft eine hydrostatische Axialkolbenmaschine (1) in Schrägachsenbauweise mit einer um eine Rotationsachse (R t ) drehbar innerhalb eines Gehäuses (2) angeordneten Triebwelle (4), mit einem um eine Rotationsachse (R t ) drehbar innerhalb des Gehäuses (2) angeordneten Triebflansch (3), und mit einer um eine Rotationsachse (R z ) drehbar innerhalb des Gehäuses (2) der Axialkolbenmaschine (1) angeordneten Zylindertrommel (7), wobei die Zylindertrommel (7) mit mehreren Kolbenausnehmungen (8) versehen ist, in denen jeweils ein Kolben (10) längsverschiebbar angeordnet ist, wobei die Kolben (10) an dem Triebflansch (3) gelenkig befestigt sind und zur gelenkigen Befestigung der Kolben (10) an dem Triebflansch (3) jeweils eine Kugelgelenkverbindung (20) vorgesehen ist, die aus einer kugelkalottenförmigen Aufnahmeschale (3a) in einer Stirnseite (3b) des Triebflansches (3) und einem Kugelkopf (10b) gebildet ist, der mit dem Kolben (10) in Wirkverbindung steht. Erfindungsgemäß sind die Aufnahmeschalen (3a) jeweils als sich bis zu dem Kugeläquator erstreckende Halbkugeln ausgebildet und ist an einer Stirnseite (3b) des Triebflansches (3) im Bereich der Aufnahmeschalen (3a) ein Rückhaltesteg (30) ausgebildet, der sich über den Kugeläquator der Halbkugel erstreckt, um den Kugelkopf (10b) mit einem Winkel von größer 180° Grad zu umgreifen.
摘要:
An end part of a piston (5) on a front edge side is formed so as to have a crowning of a 1.2-order to 2.5-order curve where a length is 10% or more and 80% or less of a length of a cylindrical part (20) and a height is 10% or more and 160% or less of a clearance. An end part of the piston (5) on a rear edge side is formed so as to have a crowning of a 1.2-order to 2.5-order curve where a length is 10% or more and 60% or less of the length of the cylindrical part (20) and a height is 10% or more and 160% or less of the clearance. An end part of a cylinder block (3) on a front edge side is formed so as to have a crowning of a 1.2-order to 2.5-order curve where a length is 8% or more and 60% or less of the length of a cylindrical part (20) and a height is 12% or more and 125% or less of the clearance.
摘要:
A sliding end part (18) of a shoe (7) has an annular seal part (60) located to surround one opening of a lubricant supply hole (52) and sliding on a slide-receiving surface. The sliding end part (18) has a first pad part (61) that has a height from a reference surface (65) lower than the seal part (60), that is located on the same circumference to partially surround the opening, and that faces the seal part (60) in a radial direction via an annular groove present on an inner side in the radial direction of the seal part (60). The sliding end part (18) has a second pad part (62) that has a height from the reference surface (65) lower than the seal part (60), that is located on the same circumference to partially surround the opening, and that faces the seal part (60) in the radial direction via an annular groove present on an outer side in the radial direction of the seal part (60).