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WO/2019/103001A1 |
This hydraulic drive system is provided with a hydraulic pump, a boom control valve, a pivot control valve, a boom operating unit, a pivot operating unit, and a drive control unit, wherein the drive control unit adjusts a pivot drive com...
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WO/2019/102410A1 |
The invention relates to a press for extruding metal material. The press comprises a hydraulic oil circuit for controlling one or more extrusion pistons movable within corresponding cylinders. Such a circuit comprises a fixed displacemen...
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WO/2019/102625A1 |
The present invention achieves an outboard motor hoist capable of flexibly changing the raising/lowering speed as called for by the state of an outboard motor. An outboard motor hoist (1) for raising and lowering an outboard motor compri...
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WO/2019/097273A1 |
This industrial apparatus (2) comprises a pneumatic system (4), a first mechanical device (36) and a second mechanical device (38). The pneumatic system (4) includes: a first pneumatic actuator (6) for commanding the first mechanical dev...
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WO/2019/097758A1 |
A fluid pressure control device (100) comprises: a first travel control valve (20) that controls the flow of a hydraulic oil supplied to a first travel motor (1); a cylinder control valve (25) that controls the flow of the hydraulic oil ...
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WO/2019/098116A1 |
A drive system for construction machinery comprising a control device that controls a fuel injection valve so that the actual engine speed is a set speed, a hydraulic circuit that includes a boom cylinder to which hydraulic fluid is supp...
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WO/2019/098103A1 |
This hydraulic pressure control valve is provided with: a valve body demarcating an internal space, first and second introduction ports, and a discharge port; a valve needle disposed to be capable of moving between a discharge-possible p...
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WO/2019/098104A1 |
This control device (1) and vibration damping device for railway vehicles sense the properties of a solenoid (19c), (21c), (32), hold a plurality of items of control information respectively suitable for the plurality of solenoids (19c),...
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WO/2019/091553A1 |
The invention relates to a hydraulic system comprising a plurality of hydraulic units (1), which each have at least one hydraulic consumer (2) in each case having a first hydraulic connection (3) and a second hydraulic connection (4); a ...
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WO/2019/093070A1 |
Provided is a pivoting work machine that can quickly increase the pivot speed while preventing the pivot parking brake from dragging when pivoting starts. A pivoting work machine comprises: a pivot motor (11); a capacity control device (...
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WO/2019/092206A1 |
Hydraulic system (120) for a vehicle comprising a vehicle hydraulic circuit (122) inter alia for the hydraulic supply of connection means of an automatic coupling device, wherein the connection means are designed to connect a coupling de...
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WO/2019/087565A1 |
This hydraulic device is provided with: a hydraulic pump (P1); a motor (M1) for driving the hydraulic pump (P1); a hydraulic cylinder (100) configured so that hydraulic oil is supplied to the inlet port thereof from the hydraulic pump (P...
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WO/2019/078091A1 |
This hydraulic shovel drive system is provided with: a control valve for a cylinder which causes a swinging portion to swing; an operating device which outputs an operation signal in accordance with an angle of inclination of an operatin...
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WO/2019/076394A1 |
The invention relates to a hydraulic unit of a reversible plough, comprising a double-acting working cylinder (1) and a hydraulic control unit (2), in which: the piston (3) comprises a radially peripheral seal (8) and at least one piston...
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WO/2019/077201A1 |
The invention relates to an apparatus and a method for dosing a lubricant into compressed-air supplied to an air motor. According to the invention, the lubricant is stored in a lubricant storage space (17) from which the lubricant is led...
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WO/2019/076391A1 |
The invention relates to a two-way hydraulic unit comprising a double-acting working cylinder (1) and a hydraulic control unit (2), in which: the piston (3) comprises a radially peripheral seal (8), a first piston ring (9) with a first p...
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WO/2019/069612A1 |
A first hydraulic circuit (50a) guides hydraulic fluid from a hydraulic pump (34a) to a hydraulic motor (22L) and a first actuator (e.g., a first work machine (86)). A second hydraulic circuit (50b) guides hydraulic fluid from a hydrauli...
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WO/2019/065590A1 |
A casting device 50 is equipped with an upper frame 5 on which an upper mold 1 is mounted, a lower frame 6 on which a lower mold 2 is mounted, a first hydraulic actuator 22, a hydraulic unit 70, a first main link member 7a equipped with ...
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WO/2019/064610A1 |
The present invention achieves a technology capable of automatically changing the speed at which an outboard motor is raised and lowered. An outboard motor hoist device (1) comprises: a pump (42); a first oil passage that connects the se...
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WO/2019/064715A1 |
Provided is a hydraulic system that can improve the acceleration of a swing motor (41) and control against increases in the flow rate of a hydraulic fluid supplied to the swing motor (41). The hydraulic system comprises a swing speed sen...
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WO/2019/067291A1 |
A control loop for a double-acting pneumatic actuator is configured to generate two control signals, one for each of the two pneumatic chambers for the purpose of controlling the actuator position in view of operating constraints on the ...
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WO/2019/064688A1 |
When simultaneously driving a turning motor and a boom cylinder, this hydraulic drive device enables optimally adjusting hydraulic pump torque distribution and enables feeding the torque actually consumed in a turning motor-driving hydra...
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WO/2019/065925A1 |
The present invention provides a technique for efficiently using energy when simultaneously performing a revolving operation and a boom raising operation. In a specific state in which hydraulic oil is supplied from a first hydraulic pump...
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WO/2019/065428A1 |
Provided is a swing-back prevention device capable of preventing a stopped hydraulic actuator from moving due to an undesired load. The swing-back prevention device is provided with: a housing; a piston; and a pair of biasing members, wh...
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WO/2019/064611A1 |
There is implemented an outboard motor raising/lowering device with which the speed of raising and lowering can be automatically changed in accordance with the state of the outboard motor. An outboard motor raising/lowering device (1) co...
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WO/2019/065510A1 |
This hydraulic system comprises: a single-rod hydraulic cylinder; a variable-capacity pump driven by a rotating electrical machine; a rod-side supply line and head-side supply line that connect the pump with the hydraulic cylinder; a fir...
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WO/2019/065509A1 |
This hydraulic system for a closed circuit is provided with: a pump driven by a rotary machine; a rod-side supply line for connecting a first port of the pump to the rod-side chamber of a hydraulic cylinder; a head-side supply line for c...
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WO/2019/060136A1 |
A closed-loop hydraulic circuit (164) associated with a swing mechanism (105) of a machine is controlled to obtain both a pressure control during acceleration and deceleration of the swing mechanism (105) and a velocity control during co...
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WO/2019/058711A1 |
A hydraulic motor control device (100) comprises a volume switching valve (30) that controls the flow of working oil supplied to and discharged from a pair of switching actuators (20, 21) that change the volume of a piston motor (1) by d...
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WO/2019/058814A1 |
A control valve (IB) is provided with: a valve body (151) having supply passages (161a, b), load pressure passages (162a, b), and a discharge passage (163); and a spool (153). The load pressure passage (162a) has connected thereto a pres...
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WO/2019/060285A1 |
An adapter converts a fastener driving tool into an automatic (multiple shots per second) pneumatic fastener driving tool. The adapter is mounted to the top of the frame body of a pneumatic fastener driving tool, in which the adapter has...
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WO/2019/059431A1 |
A time-based power boost control system. A fluid source supplies fluid. A relief device relieves pressure of the fluid supplied by the fluid source when the pressure of the fluid exceeds a relief pressure level. A control device controls...
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WO/2019/057924A1 |
The invention concerns a system for driving a moving element, comprising: - a first and a second supply line (10, 20), configured to receive a high pressure (HP) and a low pressure (LP) for supplying hydraulic motors, - a drive device co...
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WO/2019/056043A1 |
The present disclosure relates to a check valve for a hydraulic cylinder performing a safety critical function, such as, but not limited to a hoist check valve. In one aspect, the valve assembly comprises a body, the body housing both a ...
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WO/2019/054907A1 |
The invention relates to a device that generates clean, renewable energy by adding to the process of generating hydroelectric energy by means of pumping and conventional storage or by using dams to produce energy, the dams storing the en...
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WO/2019/053936A1 |
Provided is a work machine which, within the limit of not harming dynamic stability, can perform work using the impact generated when a cylinder driving a work front collides with a stroke-end. According to the present invention, a drive...
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WO/2019/053933A1 |
The present invention provides a working machine which can selectively establish a closed circuit connection between a plurality of double tilting-type hydraulic pumps and a single rod-type hydraulic cylinder, the working machine being c...
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WO/2019/053783A1 |
A lock valve 50 comprising a poppet valve body 52 which is disposed within a spring chamber 61, a spring 53 which biases the poppet valve body 52 leftward, and a valve seat 51 which comes into contact with the poppet valve body 52 is dis...
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WO/2019/054234A1 |
Provided is construction machinery with which it is possible to suppress the unintended operation of a hydraulic actuator even when a double discharge pump breaks down in a hydraulic closed circuit system. A hydraulic closed circuit syst...
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WO/2019/048455A1 |
The invention relates to a valve, in particular for use as a pressure balance (38) in lifting devices (2) that can be actuated hydraulically, comprising a valve housing (54) which has a control connection (40) and a fluid inlet (64) and ...
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WO/2019/049327A1 |
According to the present invention, a first torque control proportional electromagnetic valve (37) is connected to a third pressure-receiving chamber (32D) of a first torque control regulator (32) via a first torque control pipeline (41)...
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WO/2019/050064A1 |
A hydraulic machine may include an engine; a working fluid source driven by the engine to supply working fluid; an actuator; a flow control valve fluidly communicating with the working fluid source, wherein when signal pressure is applie...
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WO/2019/049435A1 |
In the present invention a hydraulic circuit (11) in a hydraulic shovel (1) comprises: a main hydraulic circuit (11A) that includes a boom cylinder (5D); a pilot hydraulic circuit (11B) for operating the boom cylinder (5D); and an oil re...
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WO/2019/049434A1 |
A fluid circuit (10) for air cylinders is provided with a switching valve (14), an air supply source (16), an exhaust port (18), and a check valve (20). When the switching valve is in a first position, one cylinder chamber (32) is connec...
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WO/2019/043958A1 |
An outboard motor raising/lowering device that can automatically change a raising/lowering speed in accordance with the state of an outboard motor. An outboard motor raising/lowering device (1) that comprises: a first oil passage that co...
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WO/2019/044006A1 |
This air cylinder fluid circuit (10) is formed by connecting a switching valve (14), which switches the supply and discharge of compressed air, and cylinder port parts (34, 36) of an air cylinder (12) by means of pipes (16, 18), wherein ...
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WO/2019/043957A1 |
The present invention makes it possible to perform complicated tilt trim control while reducing user labor. The present invention comprises a control unit (100) that controls the raising/lowering of an outboard motor (300) and the openin...
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WO/2019/039294A1 |
Provided is a hydraulic working machine that enables improvement of finishing accuracy in a horizontal leveling work, a slope face shaping work, and the like, by preventing sudden acceleration of an arm when excavation load is decreased ...
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WO/2019/038932A1 |
In order to achieve an outboard motor lifting device which can automatically change the speed of lifting depending on the state of the outboard motor, this outboard motor lifting device (1) is provided with a first oil path which connect...
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WO/2019/035016A1 |
A valve includes a bore within a valve body having a central axis. A plurality of galleries in the bore define flow paths for hydraulic fluid. A spool is positioned in the bore, and the spool is moveable along the central axis between a ...
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