The invention relates to a valve assembly (50) of a radial piston hydraulic apparatus (1). Said apparatus includes a cylinder block (4) insertable onto a shaft (2) by translation. Said assembly (50) includes: a valve (51) in contact with said cylinder block (4); a valve train cover (52); and a first (541) and second (542) chamber that are defined, respectively, by a first (511, 521) and second (512, 522) space that are located at the interface between said valve (51) and said valve train cover (52), and are intended for the pressurized fluids that enable the conversion of pressure and/or mechanical stress. Said assembly (50) includes an additional section (54) defined by a third space (541, 542) located at the interface between said valve (51) and said valve train cover (52). Said section (54) is intended for receiving a pressurized fluid such as to enable the cylinder block (4) to be inserted onto the shaft (2).

Methods and systems for a bent axis motor are described. In one example, a bent axis motor includes a valve plate coupled to at least one piston of a cylinder block, the valve plate comprising a first plurality of grooves spaced about openings of the valve plate on a first side of the valve plate facing the cylinder block, the valve plate further comprising a second plurality of grooves arranged on a second side of the valve plate facing away from the cylinder block.

Methods and systems for a bent axis motor are described. In one example, a bent axis motor includes a valve plate coupled to at least one piston of a cylinder block, the valve plate comprising a first plurality of grooves spaced about openings of the valve plate on a first side of the valve plate facing the cylinder block, the valve plate further comprising a second plurality of grooves arranged on a second side of the valve plate facing away from the cylinder block.

A radial piston rotary machine includes a housing, at least one opening for inlet of a medium to the machine and at least one opening for outlet of the medium from the machine, where the housing includes end caps between which a rotor is rotatably mounted. The rotor is composed of at least two plates, where a chamber for a reciprocating piston is provided in the rotor plate. The rotor plates are separated by a partition plate with an opening for a shaft of the machine. The shaft is mounted in rotary bearings in the end caps of the housing and circular cams are arranged on the shaft. The shaft is mounted eccentrically to the rotor, where the eccentricity of the axis of rotation of the shaft from the axis of the rotor is equal to the eccentricity of the axis of the circular cam from the axis of rotation of the shaft. Each piston is placed movably in reciprocation motion in the chamber for the piston in the rotor plate and rotatably on the circular cam on the shaft. The inlet and outlet of the medium to and from the piston chamber are opened and closed by valve means. The chamber for the piston is formed as a hole in the rotor plate, where at least two opposite walls of the hole are parallel for sliding arrangement of the piston. The piston is closed axially in the chamber at one side by the partition plate of the rotor plates and at the other side by an end plate of the rotor. The end plate comprises-includes an opening for the shaft and apertures for the inlet and outlet of the medium to and from the chamber. The apertures lead in the axial direction to the end cap of the housing, and are opened and closed by valve means in the form of separate arcuate slots.

To provide a radial piston pump capable of displacement control without using an electronic control valve. For achieving the above object, the radial piston pump includes: a first cam circumferentially varying in radius on an inner circumferential side or outer circumferential side of the cam in a continuous manner; a second cam circumferentially varying in radius on an inner circumferential side or outer circumferential side of the cam in a continuous manner; a first operation member operating along a side of the first cam on which the radius of the cam continuously varies; a second operation member operating along a side of the second cam on which the radius of the cam continuously varies; a first piston connected to the first operation member; a second piston connected to the second operation member; a cylinder connecting with the first piston and the second piston and varied in volume by motion of at least one of the first piston and the second piston; and an adjustment unit for rotating at least one of the first cam and the second cam.

The invention relates to a valve assembly (50) of a radial piston hydraulic apparatus (1). Said apparatus includes a cylinder block (4) insertable onto a shaft (2) by translation. Said assembly (50) includes: a valve (51) in contact with said cylinder block (4); a valve train cover (52); and a first (541) and second (542) chamber that are defined, respectively, by a first (511, 521) and second (512, 522) space that are located at the interface between said valve (51) and said valve train cover (52), and are intended for the pressurized fluids that enable the conversion of pressure and/or mechanical stress. Said assembly (50) includes an additional section (54) defined by a third space (541, 542) located at the interface between said valve (51) and said valve train cover (52). Said section (54) is intended for receiving a pressurized fluid such as to enable the cylinder block (4) to be inserted onto the shaft (2).