Abstract:
The present invention relates to a mobile handling arrangement with hydraulic circuit, forming part of which hydraulic part of which hydraulic circuit (L) is a lifting cylinder (1) arranged in a lifting arrangement (100) made for handling a variable load together with an accumulator arrangement (6) for recovering and reusing the lowered load energy, the hydraulic circuit also comprising a variable hydraulic machine (3) having two ports (10, 11), the said hydraulic machine being capable, by way of a drive unit (D), of delivering full system pressure in two directions of flow to the said ports, one port (11) being connected to the said accumulator arrangement (6) and the other port being connected to the said lifting cylinder (1), characterised in that the hydraulic circuit (L) comprises a temperature sensor (95) in connection with a gaseous phase part (68B) of the said accumulator arrangement (6) and a control and feedback unit (94) in communication with the said temperature sensor (95), by means of which the filling level in the said accumulator arrangement (6) is adjusted as a function of the temperature in the said gaseous phase part (68B).
Abstract:
A system for remotely controlling an undersea device. The system employs a gas-pressurized liquid reservoir that can be recharged from at least one replaceable gas bottle. A pressure-regulating valve is employed to control the pressure of the liquid leaving the reservoir. A number of one-shot units, each in the form of a squib-actuated valve coupled with a piston accumulator, are employed to create a hydraulic pilot for a hydraulic direction control valve. The control valve functions to direct pressurized liquid from the reservoir to a hydraulic actuator or other type of hydraulic device.
Abstract:
A hydropneumatic accumulator has a separator piston, movable in the chamber of a housing. A switch member is attached to the separator piston by a support for simultaneous movement. Sensors can be influenced by the switch member position. The switch member is surrounded by a tube member which supports the sensors and is attached to the housing. A filling attachment is provided on the tube member. A filling conduit extends within the tube member and adjacent the support to simplify the configuration of the hydropneumatic accumulator.
Abstract:
A linear position sensing system includes a sensor, a conduit and an enclosure. The sensor has a connector and a converting element, where the connector includes a first end attached to the converting element and a second end that passes through the conduit and is configured for attachment to a moveable element of an external device. The enclosure houses the sensor. The conduit includes a first end fitting that is attached to the enclosure and a second end fitting that is affixed at a port or other aperture of the external device. The second end of the connector is configured to be inserted in the port other aperture and attached to the moveable element without disassembly of the external device.
Abstract:
The invention relates to a method and a cylinder arrangement suitable for determining the position and/or movement of a piston (2) in a cylinder that has a longitudinal central axis (L), in which a liquid is present on a first piston side (4) and a gas is present on a second piston side (8), and a beam (22) of an approximately monochromatic wave is irradiated onto the second piston side (8) at an angle of incidence that does not equal 90° relative to the direction of said longitudinal central axis (L), the beam being reflected therefrom and the point (P) of incidence of the reflected beam (24) being determined.
Abstract:
A linear position sensing system includes a sensor, a conduit and an enclosure. The sensor has a connector and a converting element, where the connector includes a first end attached to the converting element and a second end that passes through the conduit and is configured for attachment to a moveable element of an external device. The enclosure houses the sensor. The conduit includes a first end fitting that is attached to the enclosure and a second end fitting that is affixed at a port or other aperture of the external device. The second end of the connector is configured to be inserted in the port other aperture and attached to the moveable element without disassembly of the external device.
Abstract:
A piston-type accumulator comprises: a) an accumulator housing provided in the form of a cylinder tube (1) made of magnetizable material, which defines an axial direction of the housing; b) a piston (3), which can be axially displaced over a stroke path inside the cylinder tube (1) and which forms a moving separating element that, inside the accumulator housing, separates two working spaces (7 and 9) from one another; c) a magnet arrangement (29, 31, 35), which is placed on the piston (3) and which generates a field on the wall of the cylinder tube (1), and; d) a magnetic field sensor device, which is located on the exterior of the cylinder tube (1) and which has at least one Hall sensor (51). Said Hall sensor is mounted on the exterior of the cylinder tube (1) and responds to the field generated by the magnet arrangement (29, 31, 35) on the piston (3) in order to determine the position of the piston (3) along the stroke path.