Abstract:
A hydraulic hoselinder is a hydraulic linear actuator integrated into a flexible hose. A continuous length of flexible hose has a rigid fluid coupling mounted at one end and a rigid rod fitting mounted at an opposite end. A cylinder rod extends through the rigid rod fitting and includes an eye at one end and a piston that divides the flexible hose into a extend hydraulic volume and a retract volume. The cylinder rod is movable along a straight line with respect to the rigid rod fitting between a refracted position and an extended position. A majority of the active length of cylinder rod is positioned inside and outside of the flexible hose at the retracted and extended positions, respectively.
Abstract:
The hydraulic energy converter (4) can be connected to a hydraulic system. The converter (4) comprises a manifold device (1) for controlling hydraulic fluid flow, a controller (3) for controlling the manifold device (1), and at least one accumulator (2) connected to the manifold device (1), for storing hydraulic energy supplied by the hydraulic system via the manifold device (1).
Abstract:
Die Erfindung betrifft eine Druckausgleichseinrichtung 10 und ein Gehäusebauteil mit der Druckausgleichseinrichtung 10. Die Druckausgleichsausrichtung 10 weist eine Membran 60 und ein Halteelement 20 auf, wobei das Halteelement 20 eine Auflagefläche 50 hat, die der Membran 60 zugewandt ist, wobei an der Auflagefläche 50 zwischen der Membran 60 und dem Halteelement 20 eine Stoffschlüssige Verbindung ausgebildet ist, mittels der die Membran 60 an der Auflagefläche 50 des Halteelements 20 befestigt ist, wobei ein Deckel 25 an dem Halteelement 20 befestigt ist, wobei der Deckel 25 wenigstens eine erste Aufnahme 65 aufweist, in der die Membran 60 zumindest teilweise aufgenommen ist, wobei der Deckel 25 die Membran 60 zumindest teilweise an die Stoffschlüssige Verbindung 50 und die stoffschlüssige Verbindung an die Auflagefläche 50 des Halteelements 20 anpresst.
Abstract:
The invention relates to a lifting machine (1) comprising a lifting arm (3), a rolling chassis (2) equipped with at least one front axle (5) and one rear axle (6), and a sensor for measuring the tilt of the lifting arm (3) in relation to the chassis (2), the rear axle (6) being pivotably mounted around an axis that is parallel to the longitudinal axis of the machine (1). The rear pivoting axle (6) is mounted to freely pivot inside an angular range defined by two abutments supported by said chassis (2), the front axle (5) is coupled to the chassis (2) by a pivoting connection with an axis that is parallel to the longitudinal axis of the machine (1) and is equipped with an activatable/deactivatable suspension (9) in order to allow the relative pivoting between the front axle (5) and the chassis (2) to be damped, said suspension (9) being deactivated at least when the angle value measured by sensor (4) for measuring the tilt of the lifting arm (3) is greater than a predetermined threshold value.
Abstract:
The present disclosure provides a control valve assembly arranged between a main control valve and a hydraulic function on a mobile machine. The control valve assembly includes a fluid source, a first supply valve, a first return valve, a second supply valve, and a second return valve. The control valve assembly further includes a controller configured to determine if an actual motion parameter of the hydraulic function is different than a desired motion parameter based on the determination of a motion sensor. The controller configured to selectively move at least one of the first supply valve, the first return valve, the second supply valve, and the second return valve to adjust the actual motion parameter of the hydraulic function and compensate for a difference between the actual motion parameter and the desired motion parameter.
Abstract:
A hydraulic control system for a machine is provided. The hydraulic control system includes a fluid reservoir, a pump motor and an accumulator. The pump motor is configured to provide pressurized fluid and to receive fluid to provide a power output. The hydraulic control system further includes a hydraulic actuator having a first and a second chamber, a first valve, a regenerative valve, and a controller. The controller is in communication with the first valve and the regenerative valve to selectively actuate the regenerative valve to allow flow of a first portion of the fluid from the first chamber to the second chamber. The controller is further configured to selectively actuate the first valve to allow flow of a second portion of the fluid from the first chamber through the pump motor to provide the power output to a shaft of a power source.
Abstract:
A hydraulic control system for a machine is provided. The hydraulic control system includes a fluid reservoir, a pump motor and an accumulator. The pump motor is configured to provide pressurized fluid and to receive fluid to provide a power output. The hydraulic control system further includes a hydraulic actuator having a first and a second chamber, a first valve, a regenerative valve, and a controller. The controller is in communication with the first valve and the regenerative valve to selectively actuate the regenerative valve to allow flow of a first portion of the fluid from the first chamber to the second chamber. The controller is further configured to selectively actuate the first valve to allow flow of a second portion of the fluid from the first chamber through the pump motor to provide the power output to a shaft of a power source.
Abstract:
There is set forth herein an actuator having a housing and a piston assembly. The piston assembly can have a piston and a piston rod extending from the piston. In one embodiment, the housing can receive the piston and a portion of the piston rod. The piston assembly can define a piston assembly interior and a fluid reservoir can be located within the piston assembly interior. A chamber region within the interior of the housing can be separated by the piston assembly to define a piston side chamber and rod side chamber. The piston assembly can be moveable so that respective volumes of each of the piston side chamber and the rod side chamber are variable. For operation of the actuator by movement of the piston assembly within the interior of the housing, fluid can be moved between the reservoir and the chamber region.
Abstract:
Control fluid power apparatus and related methods are disclosed. An example control fluid power apparatus includes a first housing having a first piston defining a first chamber and a second chamber, where the first chamber receives a control fluid and the second chamber receives a process fluid from a process system. The first chamber is oriented above the second chamber when the control fluid power apparatus is coupled to a control valve assembly. A second housing has a second piston defining a third chamber and a fourth chamber, where the third chamber receives the control fluid and the second chamber receives the process fluid. The third chamber is oriented above the fourth chamber when the control fluid power apparatus is coupled to the control valve assembly.
Abstract:
A hydraulic charging and driving system (4), aircraft employing the same, and corresponding methods, for extending and retracting a hydraulic actuator (2), comprising: a motor assembly (22); and an accumulator assembly (20), the motor assembly (22) and the accumulator assembly (20) being hydraulically coupled to each other; wherein the motor assembly (22) is arranged to recharge the accumulator assembly (20) with hydraulic fluid at a relatively slow rate that is slower than the rate at which the accumulator assembly (20) is arranged to discharge when actuating the hydraulic actuator (2). The system may further comprise a selector valve (24). The accumulator assembly (20) may comprise an accumulator chamber (30), and a compression means (32) provided within the accumulator chamber (30). The motor assembly (22) may comprise a motor (42) arranged to vary a volume of a hydraulic charging chamber (38) of the motor assembly (22).