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WO/2015/115429A1 |
A control system for a work machine, said control system being equipped with: a split flow fluid pressure pump that discharges a working fluid from a first discharge port and a second discharge port; a connection switching valve, which i...
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WO/2015/115430A1 |
A control system for a work machine, said control system being equipped with: a split flow fluid pressure pump that discharges a working fluid from a first discharge port and a second discharge port; a connection switching valve which, w...
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WO/2015/111390A1 |
A hydraulic drive system (1), provided with first through third fluid pressure pumps (11-13) and control valves (21, 32, 34, 41, 42). The first boom control valve (21) is connected to the first hydraulic pump (11), and the second arm con...
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WO/2015/111304A1 |
A control system (100) for a hybrid construction machine, said control system being equipped with: a regeneration passage switching valve (58) having a normal position, in which an operating fluid is shut off, and a regeneration position...
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WO/2015/111305A1 |
A control system (100) for a hybrid construction machine, said control system being equipped with: a main pump (MP1) that discharges an operating fluid and thereby drives an actuator (RM); a regenerative motor (M) driven by the operating...
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WO/2015/111775A1 |
Disclosed are a device for controlling a regenerated flow rate for a construction machine and a method for controlling the same, the device being able to supply a large chamber of an arm cylinder with a part of operating oil, which is di...
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WO/2015/111120A1 |
A fluidic system (1A) according to one aspect of the present invention includes an actuator (5), an operating valve (6), and a spool valve (4). The spool valve (4) is connected to a pressure source (21) and a tank (23) by a pressure sour...
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WO/2015/106931A1 |
The invention relates to a valve device (100) for controlling a consumer (200), in particular a cylinder. The valve device (100) has a pressure connection (101), a tank connection (102), a first working connection (103) and a second work...
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WO/2015/108216A1 |
The disclosed invention relates to a drive control apparatus for a construction machine, comprising a work apparatus operating means, a left drive pedal apparatus, a right drive pedal apparatus and a pilot pump for providing a pilot sign...
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WO/2015/102120A1 |
The disclosed invention relates to a construction equipment traveling control device including a pilot pump for supplying pilot signal pressure for spool conversion to a working device operating means and a left traveling pedal device, a...
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WO/2015/098033A1 |
A hydraulic driving system (1) is provided with a meter-in compensator (37) and a bleed-off compensator (42), the hydraulic driving system further including a plurality of sensors (64 to 68), a controller (62), and an exit pressure chang...
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WO/2015/099352A1 |
One embodiment of the present invention relates to an apparatus for controlling a combined operation of a construction machine, comprising: a first pump and a second pump for supplying under the operation of an operation unit pressurised...
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WO/2015/099337A1 |
An embodiment of the present invention relates to a pressure peak reduction valve for an excavator. The pressure peak reduction valve for an excavator comprises: a poppet sheet having an inlet into which working fluid discharged from a h...
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WO/2015/093477A1 |
This work vehicle comprises an engine, a hydraulic pump, a work machine, a traveling device, an accelerator operation member, a work machine operation member, and a control unit. The hydraulic pump is driven by the engine. The work machi...
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WO/2015/092472A1 |
This pneumatic actuator system (2), comprises at least an actuator (4), a compressor (8), providing compressed air to the actuator, a first intake conduit (24), supplying the compressor with external air (A), and a second intake conduit ...
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WO/2015/094024A1 |
The invention relates to a hydraulic load sensing system (12) for a working machine (1). The hydraulic system comprises a pump (13) for providing hydraulic fluid for driving an actuator (14), and a hydraulic accumulator (16). The hydraul...
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WO/2015/087744A1 |
A fluid pressure control device (100) is provided with communication passages (67, 68) that are blocked to a third pressure chamber (66) by way of a second land portion (73) when the spool (56) is in a closed valve state and cause a seco...
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WO/2015/085647A1 |
An inner-circulation high-speed hydraulic system comprises a hydraulic cylinder assembly and a pressurizing valve assembly. The hydraulic cylinder assembly is provided with a high-pressure cylinder body, a hydraulic plunger, and a housin...
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WO/2015/086532A1 |
A hydraulic system comprising a first hydraulic cylinder (44) and a second hydraulic cylinder (56) is provided wherein a hydraulic circuit provides for automatic sequential operation of the cylinders (44,56). The second hydraulic cylinde...
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WO/2015/082321A1 |
Disclosed is a hydraulic arrangement with an adjustable hydraulic machine (2) and a control valve (64), which is assigned to a first operating mode of the hydraulic machine, in particular motor operation, and the control of which can be ...
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WO/2015/080111A1 |
The purpose of the present invention is to be able to effectively use the rated output torque of a power engine and to accurately control the entire toque by accurately detecting the absorption toque of one hydraulic pump by means of a p...
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WO/2015/080112A1 |
The present invention improves mountability, effectively uses the rated output torque of a power engine, and accurately controls the entire toque by accurately detecting the absorption toque of one hydraulic pump by means of a purely hyd...
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WO/2015/076130A1 |
Provided is a driving device for a work machine with which unnecessary switching control of a switching valve can be reduced. The present invention is configured such that at least two closed-circuit hydraulic pumps (2a-2f) can be connec...
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WO/2015/075839A1 |
This flow rate control valve is for use in hydraulic equipment such as a forklift and is provided with: a body that comprises a variable throttle that opens on a cylinder side and a control throttle that opens on a discharge port side; a...
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WO/2015/072264A1 |
A pump brake control decision unit makes a decision as to implementation of pump brake control for generating braking force by the load of a hydraulic pump during braking. A pump brake torque control unit increases the pump brake torque ...
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WO/2015/073529A1 |
A hydraulic brake mechanism (145; 245; 345) for use in hydraulic systems (200; 300) to provide braking of a hydraulic motor (150; 250; 350) is disclosed. The brake mechanism provides proper braking under a range of operating conditions, ...
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WO/2015/069801A1 |
Reciprocally moving an output rod mounted to a force transfer member includes applying hydraulic pressure to a first piston and cylinder device to operate the first piston and cylinder device in compression to move the force transfer mem...
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WO/2015/068413A1 |
A control valve, which is used to supply compressed air supplied from an air pressure source (11) to a supply-receiving member (12), performs slow start control on the supply of compressed air to the supply-receiving member (12). A valve...
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WO/2015/067616A1 |
Provided is a hydraulic circuit capable of saving a pump flow rate while hydraulic fluid is being accumulated in an accumulator. The hydraulic circuit has: a couple of boom cylinders (7c1, 7c2) that simultaneously operate the same operat...
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WO/2015/064026A1 |
This hydraulic shovel drive system includes: a first hydraulic pump and second hydraulic pump that, independently of each other, can control a tilt angle; an arm primary control valve and an arm secondary control valve for controlling th...
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WO/2015/064785A1 |
Disclosed is a hydraulic circuit for construction equipment, having a floating function for ground leveling work, which can be implemented by a main control valve. According to the present invention, provided is a flow control valve for ...
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WO/2015/064025A1 |
This hydraulic drive system of a construction machine includes: a first hydraulic pump and second hydraulic pump that can, independently of each other, adjust a tilt angle; a turning control valve for controlling the supply of hydraulic ...
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WO/2015/064782A1 |
The present invention relates to a hydraulic system of construction equipment, having a float function, comprising: a hydraulic pump and a pilot pump for supplying hydraulic oil for the operation of construction equipment; a remote contr...
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WO/2015/064044A1 |
This hydraulic drive unit (1) drives actuators (7, 9, 10) by supplying said actuators (7, 9, 10) with a hydraulic oil discharged from a hydraulic pump (11). The hydraulic drive device (1) is provided with operation valves (13, 14), a flo...
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WO/2015/060797A1 |
A hydraulic machine comprising user-1 and user-2 working in multiple numbers and at different pressure levels, or multiple user groups (10, 10'); characterized in further comprising; β At least two pumps (P1, P2) as the pump feeding sou...
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WO/2015/059546A1 |
Methods, computer readable media, and apparatus are disclosed for a hydraulic system with fine feed and a brake are disclosed. The system may include a hydraulic cylinder (106,108) comprising a piston. The system may include a hydraulic ...
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WO/2015/056422A1 |
A hydraulic drive system (1A) having first and second multi-control valves (4A, 4B) connected to first and second hydraulic pumps (21, 22). First and second regulators (3A, 3B) adjust the tilt angle of the first and second hydraulic pump...
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WO/2015/056421A1 |
A hydraulic drive system (1A) having first and second multi-control valves (4A, 4B) connected to first and second hydraulic pumps (21, 22). A first regulator (3A) adjusts the tilt angle of the first hydraulic pump (21) such that the disc...
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WO/2015/056423A1 |
A hydraulic drive system (1A) having first and second multi-control valves (4A, 4B) connected to first and second hydraulic pumps (21, 22). A first regulator (3A) adjusts the tilt angle of the first hydraulic pump (21) such that the disc...
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WO/2015/052206A1 |
The invention relates to a hydraulic drive (1, 100) and a method for discreetly changing a positional output (3), in particular the linear and/or angular output, on a hydraulic drive (1, 100). At least one displacement cylinder (6, 7) ei...
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WO/2015/049728A1 |
A flow rate control valve is provided with: a main spool having a sliding hole which is provided with a first passage for allowing a high-pressure liquid to be introduced therein, and which is also provided with second passages open to a...
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WO/2015/049828A1 |
A lift control valve (1) having a main spool (17) and a compensator spool (21). When the main spool (17) is moved to a first offset position (17B) operating oil can be supplied to a lift cylinder mechanism (8), and when the main spool is...
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WO/2015/043377A1 |
An auxiliary hydraulic system and a concrete pumping device. The auxiliary hydraulic system comprises a main oil pump (1), a stirring motor (7), a water-cleaning motor (9), a first reversing valve (6), and a second reversing valve (8). A...
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WO/2015/040800A1 |
A fluid-pressure drive device (1) drives actuators (7, 9, 10) by supplying a hydraulic fluid discharged from a fluid-pressure pump (11) to the actuators (7, 9, 10). The fluid-pressure drive device (1) has operating valves (13, 14), a flo...
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WO/2015/040572A1 |
A hydraulic pressure generation unit with pneumatic actuation, in particular a multifunctional unit actuated by air under a low pressure, is formed by at least one pump (1), preferably two automated pneumatic pumps (1 and 2), comprising ...
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WO/2015/041024A1 |
Provided is a brake control device with which excessive valve opening of a pressure regulator valve due to pump pulsation can be minimized, while minimizing the increase in size of the device. A solenoid of a gate-out valve (3) is energi...
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WO/2015/037433A1 |
A fluid pressure control device is provided with a pilot control valve for controlling pilot pressure led from a pilot pump to a control valve, and a load-holding mechanism interposed in a main passageway; the load-holding mechanism is p...
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WO/2015/035903A1 |
A wobbler mechanism is used for driving a distributing valve of a concrete pumping device to wobble, and comprises a wobbling arm (6) for driving the distributing valve, and two hydraulic oil cylinders (2, 4) for driving the wobbling arm...
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WO/2015/035454A1 |
A hydraulic motor circuit for driving an auger is disclosed. The circuit includes a hydraulic motor that receives oil from an oil supply via a supply line and returns oil to the oil supply via a return line. The circuit further includes ...
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WO/2015/029866A1 |
In the interior of a valve housing (2) equipped with a first flow path (10) and a second flow path (11) connecting a first port (5) and a second port (6) in parallel, there are provided a needle valve body (22), which opens/closes a thro...
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