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WO/2014/017492A1 |
A control system for a construction machine, provided with: a boom cylinder; a boom switching valve; a fluid pressure motor, which is caused to rotate by the return fluid guided from the piston-side chamber and which drives a motor gener...
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WO/2014/014131A1 |
Disclosed is a method for controlling a hydraulic system for minimizing a loss of pressure by expanding the open area of a joining spool if a work device such as a boom or the like operates autonomously. The present invention provides a ...
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WO/2014/007036A1 |
The present invention relates to a hydraulic circuit for a working machine, the hydraulic circuit comprising a hydraulic actuator and an accumulator for accumulating hydraulic energy discharged from the hydraulic actuator, and addresses ...
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WO/2014/001881A2 |
A device and a method for exploiting hydrostatic energy, wherein the device comprises at least a first chamber and a second chamber, wherein the first chamber and the second chamber are at least partially filled with a fluid is suggested...
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WO/2014/003626A1 |
A device for a hydraulic rock drilling machine (1) for the protection of a piston seal unit (6) for sealing between a percussive piston (4) and a cylinder in a housing (2) of the rock drilling machine, wherein a piston guide (5) is posit...
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WO/2013/180605A1 |
A method for recovering energy in a hydraulic system of a working machine, the hydraulic system comprising at least one hydraulic cylinder for movement of a load, and a fan driven by a hydraulic motor, comprising the steps of pressurizin...
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WO/2013/176559A1 |
The device consists of an actuator (1) supplied with hydraulic fluid through the valve block (2), wherein the actuator (1) is provided with a measuring unit (3) and two pressure sensors, the first sensor (9a) is mounted under the piston,...
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WO/2013/174235A1 |
An energy recycling system for a working device comprises an energy converter, a pressure-retaining valve, a switching valve, an energy collector, a logic control unit, a main valve, a movable arm device and corresponding connecting comp...
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WO/2013/177526A1 |
Apparatus for routing gas entrapped within a hydraulic drive fluid comprising an actuator cylinder having a bore that has an inner surface and a piston received within the bore of the cylinder for reciprocal upstream-downstream movement ...
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WO/2013/166828A1 |
A hydraulic oil return diffuser includes a first main body (20) which is provided with a first hole (23) and a second main body (10), at least a part of the first main body is sleeved in the second main body. The second main body is prov...
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WO/2013/167610A1 |
The invention relates to a method for operating a hydraulic press used for the primary shaping, reshaping, punching or processing of materials or workpieces such as plastic molding compounds, deep-drawing sheets, forged pieces or the lik...
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WO/2013/164072A1 |
The invention relates to a device for saving energy in hydraulically actuated working appliances (1), comprising a supply unit, in particular in the form of a hydraulic pump (33) and a piston accumulator (5) with a piston (9) which can b...
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WO/2013/164096A1 |
The invention relates to a device for saving energy in working appliances that can be hydraulically actuated, comprising a supply unit, in particular in the form of a hydraulic pump (35) and a piston accumulator (5) having at least two l...
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WO/2013/164073A1 |
The invention relates to a device for saving energy in working appliances (1) which can be actuated hydraulically, comprising a supply unit, in particular in the form of a hydraulic pump (31) and a piston accumulator (5) with at least tw...
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WO/2013/158199A1 |
A fluid power control system for load handling mobile equipment includes a pair of hydraulic actuators for moving respective cooperating load-engaging members selectively toward or away from each other, or in a common direction, at respe...
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WO/2013/158079A1 |
In general, systems and methods for controlling work machine implements are described. In one embodiment, a system for controlling a hydraulically-powered third-party work machine implement includes a microcontroller-based conversion mod...
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WO/2013/152867A2 |
The invention relates to a compressed-air processing device (10) for a vehicle, comprising a solenoid valve (12), wherein a solenoid valve output terminal (16) of the solenoid valve (12) is coupled to a compressor control output (34), a ...
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WO/2013/150110A2 |
The present invention relates to an air drying device (10) for a rail vehicle, with a first air dryer container (12), a second air dryer container (14) and an air supply (23) through which air to be dried can be supplied by a compressor ...
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WO/2013/151598A1 |
valve (10) and a hydraulic controller (45) are provider. The valve may combine a rotary-to-linear converter (24) with the hydraulic controller to provide for at least two mechanisms for actuating the valve. Additionally, the valve may in...
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WO/2013/149618A1 |
The present invention relates to a closed hydraulic circuit between a hydraulic pump (2) and a hydraulic motor (6) that are connected to one another via working lines (4, 5), wherein a flushing pump (7) is provided in order to feed a pre...
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WO/2013/149608A1 |
The present invention relates to a hydraulic attachment comprising a hydraulic circuit, the attachment being a construction or demolition tool, in particular a hydraulic breaker, demolition shears, scrap shears, a pulveriser, a gripper, ...
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WO/2013/150985A1 |
The invention relates to a hydraulic circuit that enables the maintenance of a ganged valve in the hydraulic circuit and that facilitates the implementation of various functions including circuit flushing and trial run, and to a combinat...
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WO/2013/143566A1 |
The invention relates to a pressure medium supply system (10.1) for operating a pneumatic system, comprising a pressure medium feed (1), a pressure medium connection (2), a ventilation connection (3), at least one pressure medium loading...
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WO/2013/146574A1 |
A water hydraulic drive system is provided with: a water hydraulic pump for sucking operating water and discharging the operating water; a water hydraulic actuator driven by pressurized water discharged from the water hydraulic pump; a w...
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WO/2013/148707A1 |
A method of compressing gas includes maintaining a volume of gas at a first pressure within a first chamber. Pressurized liquid is forced into the first chamber through a nozzle having a curved profile. Based on the Coanda effect, the li...
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WO/2013/145528A1 |
To sufficiently reduce hydraulic-pump drive losses. This control device is provided with a control unit (14) that: controls the action of a regeneration valve (22) so as to switch to a regeneration state when performing a compound action...
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WO/2013/146575A1 |
In the present invention, a fluid pressure drive unit provides working fluid to a fluid pressure actuator and drives the same. The fluid pressure drive unit is provided with the following: a fluid pressure pump that sucks in and ejects t...
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WO/2013/144831A1 |
A vibration damping system by means of a hydraulic actuation system, in particular for rolling mills, comprising at least one hydraulic actuator (1 ) having a movable part (11 ) and a corresponding hydraulic feeding circuit (2), and hydr...
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WO/2013/146409A1 |
This boom drive device is provided with a boom switching valve for extending and retracting a boom hydraulic cylinder. When the boom switching valve is in a lowering position in which lowering operations are performed, work fluid dischar...
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WO/2013/140561A1 |
The present invention provides a flushing circuit for a hydraulic cylinder drive circuit, the flushing circuit being configured so as to flush both the reciprocating hydraulic cylinder and the inside of the drive circuit for the reciproc...
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WO/2013/137235A1 |
A switching valve is provided with a spool housed in a spool housing, and a pilot chamber facing at least one end of the spool. An axial-direction channel is formed in the spool in the axial direction thereof. The axial-direction channel...
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WO/2013/135336A1 |
The invention relates to a method for separating gas from a flowable medium, wherein gas-enriched medium (7) located in a media-conveying system (1; 30) is led out of the system (1; 30) into a separating device (10), wherein in the separ...
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WO/2013/135039A1 |
Disclosed are a movement control device, a method, a system and an engineering machinery of a hydraulic actuating mechanism. The movement control device comprises a control unit obtaining a current movement position and the current oil p...
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WO/2013/132721A1 |
The objective of the present invention is to increase the pump absorption torque and increase the exhaust gas temperature in a hydraulic drive device that performs load-sensing control, thereby enabling filter deposits in an exhaust gas ...
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WO/2013/128690A1 |
An operation-state determination unit determines whether a hydraulic cylinder is operating or not operating. A discharge-pressure reduction unit reduces the discharge pressure of a charge pump. When the hydraulic cylinder is not operatin...
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WO/2013/130768A1 |
A hydraulic system (10) that includes a rotating group (600) with a plurality of fluid chambers and a plurality of valve sets that valve a corresponding one of the fluid chambers is disclosed. The hydraulic system may function as a hydra...
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WO/2013/121922A1 |
Construction machinery is provided which can significantly reduce fuel consumption through the efficient use of recovered energy. The construction machinery includes: a first hydraulic pump (3) and a second hydraulic pump (9) for dischar...
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WO/2013/122531A1 |
A separate hydraulic power pack (2) for providing at least one user with an oil flow is presented. The hydraulic unit (2) comprises: a motor (14), a hydraulic pump driven by the motor (14), a tank (16), an oil inlet (20), an oil outlet (...
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WO/2013/113475A1 |
The invention relates to a valve (10), comprising a valve housing (12) provided with a fluid inlet (14), a fluid outlet (16), and a throttling device (18), said throttling device forming a permanent connection between the fluid inlet (14...
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WO/2013/115986A1 |
A hydraulic system includes a pump (22) that draws fluid from a reservoir (24) and an actuator (26) having a first port and a second port. A metering valve arrangement (28) controls fluid flow through the actuator and includes a meter-in...
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WO/2013/115053A1 |
This hybrid construction machine is provided with: a first and a second main pump; a first and a second supply path; a first and a second circuit system; a hydraulic motor; a motor generator; an assist pump; a branched converging path co...
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WO/2013/111707A1 |
A hybrid construction machine comprises first and second main pumps, first and second supply passages, first and second circuit systems, a hydraulic motor, a motor generator, an assist pump, a joint passage which is connected to the assi...
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WO/2013/111705A1 |
A circuit pressure control apparatus comprises: a relief valve which is connected to a connection passage with which an actuator communicates on the upstream side; and a variable throttle which is upstream of the relief valve and the ope...
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WO/2013/109418A1 |
A method of controlling a valve (206) includes detecting a supply pressure at a fluid source (202) and detecting a first port (208) pressure at a first side of a piston (214). A controller (224) actuates the valve from a closed position ...
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WO/2013/108445A1 |
A purpose of the invention is to reduce the load acting on an engine at engine startup and startup the engine quickly, and to reliably supply pressure oil to an accumulator from a hydraulic pump. A hydraulic control device comprises: fir...
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WO/2013/107466A1 |
The invention relates to a method for configuring a fluid control unit (2), having the steps: provision of information about the fluid control unit (2) and about a movement device (7) and about fluid control valves (3, 4, 5, 6) to a proc...
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WO/2013/108575A1 |
The vehicle body (2) of a dump truck (1) is provided with a hydraulic oil tank (16) for storing hydraulic oil supplied from a hoist cylinder (15) or the like. The hydraulic oil tank (16) is provided with a heating chamber (23). A heating...
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WO/2013/106245A1 |
A method for operating a materials handling vehicle includes activating the materials handling vehicle and performing a warm up cycle. During the warm up cycle, energy is provided to at least one valve within the materials handling vehic...
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WO/2013/106431A2 |
A hydraulic circuit architecture for a work vehicle includes a pump, a work circuit, a propel circuit, and a circuit selector. The work circuit is connected to an actuator for driving a work component of the work vehicle. The propel circ...
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WO/2013/106131A1 |
A method includes energizing a solenoid valve of a hydraulic control system according to a predetermined timing schedule to move a valve member of the solenoid valve. The solenoid valve is operatively connected to the switching component...
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