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JP5462664B2 |
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JP5452723B2 |
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JP5449264B2 |
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JP5443652B2 |
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JP2014047891A |
To provide an air operated valve control system and its method capable of maintaining high reliability while achieving redundancy.An air operated valve control system 10 includes a control part 14 for outputting a first signal d1 for ope...
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JP5441152B2 |
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JP5431477B2 |
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JP5426037B2 |
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JP5426769B2 |
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JP5414004B2 |
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JP2014024432A |
To provide a vessel steering device capable of attaining an automatic fail-safe function capable of surely and automatically securing safety and reliability with a simpler configuration.A vessel steering device includes: first and second...
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JP2014025209A |
To provide a hydraulic driving device for a construction machine with a high safety capable of avoiding unexpected reduction in driving torque or braking torque of a revolving hydraulic motor even when any failure occurs in a constituent...
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JP2014024482A |
To reliably prevent a device failure in a suction route caused by sucking water from a suction port in a ballast tank.A gas detection device for ballast tank sucks an atmospheric gas in a ballast tank of a tanker via a suction route 10 b...
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JP2014019223A |
To provide a truck hydraulic mechanism with high safety.A truck hydraulic mechanism includes: power units MU and SU for supplying hydraulic oil to actuate a cargo receiving base elevator and a different kind driving device; a cargo recei...
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JP5402875B2 |
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JP2014013045A |
To provide a hydraulic recovery apparatus which surely prevents malfunction of a generator and malfunction of an apparatus as a use destination of generated power, and which causes neither function breakdown nor function deterioration of...
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JP5397191B2 |
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JP2014009566A |
To identify the cause of travel abnormality by utilizing an existing circuit structure as it is for inspection.During ON-operation of an inspection switch 33, a flow path selector valve 27 selects a second position (b) in accordance with...
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JP2014006152A |
To provide a drive source abnormality detection device capable of more clearly determining whether or not a decrease in output of a construction machine is caused by abnormality of a drive source.A drive source abnormality detection devi...
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JP5388144B2 |
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JP2013253693A |
To stop operation of an electromagnetic valve to be stopped in a plurality of manifold electromagnetic valve units.In an electromagnetic valve system 10, a plurality of first-third electromagnetic valve units 14a-14d, 16a-16d and 18a-18d...
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JP2013253409A |
To provide a construction machine equipped with a hydraulic actuator and an electric actuator, in which the electric actuator can be suitably stopped when lock operation is started during the operation of the electric actuator.The constr...
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JP2013253674A |
To provide a fluid pressure unit capable of discriminating a radiator abnormality from other abnormalities to be the cause of an emergency stop and eliminating worker's time and labor for specifying the abnormalities.An abnormality estim...
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JP2013255374A |
To provide an airborne motor drive control device that can secure control performance and also suppress heat generation at high level in a well-balanced state with a simple constitution which can suppress heat generation of the motor dri...
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JP5368752B2 |
A working vehicle, wherein flows of hydraulic oil delivered under pressure from two or more hydraulic pumps are joined together and the joined hydraulic oil can be taken out. A working vehicle is provided with two hydraulic pumps indepen...
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JP2013248928A |
To provide a dump trunk that can be precisely guided to a destination even while unmanned without modifications being made to safety-critical parts.A dump trunk includes a manned steering valve 20 for controlling the supply of oil to a s...
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JP5366485B2 |
To provide a hydraulic control device of a construction machine for arranging a switching valve operating by a load sensing signal in a control valve. A multiple control valve 100 is provided with the switching valve 104 operating by the...
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JP2013543957A |
A safety circuit for valves actuated hydraulically via a positioning cylinder. The positioning cylinder in one embodiment is configured to be hydraulically or pneumatically depressurized in an emergency. The positioning cylinder has two ...
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JP5360845B2 |
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JP2013238267A |
To provide a pneumatic operation device capable of supplying compression air of a normal pressure to pneumatic equipment even when the pressure of the compression air circulating through a compressed air line in a plant is lower than the...
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JP2013231505A |
To provide a hydraulic circuit capable of repairing, inspecting and maintaining a sandwich valve, capable of repairing, inspecting and maintaining hydraulic equipment, and capable of flushing a circuit at the same time while driving a hy...
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JP5340219B2 |
To provide a work machine including a means for supplying hydraulic oil from a first pump and a means for supplying hydraulic oil from the second pump in addition to the hydraulic oil from the first pump, which can surely prevent careles...
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JP2013227004A |
To make a mechanism for prioritizing a handle operation simple and stable in a wheel loader in which a steering operation can be performed by a handle operation and a lever operation.A steering device includes: a handle control valve 26;...
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JP5336558B2 |
To provide a method of controlling a variable displacement pump, in which a practically excellent hydraulic circuit can be constructed using a variable displacement pump and a closed center type directional valve and the pump can be oper...
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JP5330193B2 |
To provide a back pressure pressurizing valve improved in safety of a piston from seizure without complicating the structure. A first piston 3 and a second piston 4 are slidably housed in a case 2. Since the first piston 3 and the second...
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JP5320120B2 |
A multifunction relief valve 1 includes: a relief chamber 2 having an introduction port 7 and a relief port 8 for introducing and relieving pressure fluid; a back pressure chamber 3 formed on one end side of the relief chamber 2; a pisto...
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JP5309912B2 |
To provide a windlass switching the set pressure of a safety valve between the use of a chain drum and the use of a hawser drum. In the windlass 1, a chain drum 3 and a hawser drum 6 are connected to a hydraulic motor 4, the maximum pres...
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JP5304236B2 |
To stop swing motion by operating a swing brake when a gate lever is open-operated, that is, when a hydraulic locking works. An operation of the swing brake 12 which is a mechanical brake is delayed by a controller 33 and an electromagne...
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JP2013193679A |
To provide a mixer drum driving device suitable for miniaturizing an electric motor and a power source.A mixer drum driving device includes an auxiliary hydraulic pump 5 capable of supplying a hydraulic oil to a hydraulic motor 3 indepen...
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JP2013185401A |
To provide a control device for a construction machine equipped with two hydraulic pumps, capable of controlling the two hydraulic pumps when one of solenoid valves, etc. for controlling the discharge amounts of the two hydraulic pumps, ...
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JP5295141B2 |
An apparatus for compensating for fluid contraction in a hydraulic powered telescoping boom (110) includes a monitor (200) determining the elevation angle of the telescoping boom, a supply of hydraulic fluid, and a fluid control responsi...
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JP5293009B2 |
To complete a filter regenerating action, and to surely prevent the abrupt actuation of an actuator. When a regeneration starting switch 15 is operated and it is determined that the regeneration of a filter is required, a high idle speed...
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JP5286156B2 |
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JP2013173478A |
To miniaturize a system constitution, by restraining heating as the whole system, by preventing reduction in machine body efficiency, by driving a control surface by an actuator, even when the function of a machine body side hydraulic so...
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JP5279790B2 |
To provide a damper driving device capable of easily driving a damper by manual operation even when a solenoid valve falls into a poor operational performance owing to a disconnection of a control cable, etc. The damper driving device in...
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JP2013166604A |
To provide a hydraulic system and a forklift having the hydraulic system, capable of early finding a leak of hydraulic oil from a bottom chamber to a rod chamber.A hydraulic system 1A comprises a hydraulic cylinder 2 of an internal drain...
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JP2013164143A |
To detect leak of hydraulic oil from a lower chamber having the hydraulic oil stored therein to an upper chamber without storing the hydraulic oil.A vertically-arranged cylinder 2 where an upper chamber 24 is separated from a lower chamb...
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JP2013160382A |
To provide a hydraulic control device with improved safety for humans.A hydraulic control device includes a pump 4 having a pump regulator, and adjustable metering orifices 8a, 8b. The first metering orifice is arranged between a supply ...
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JP5265847B2 |
To provide a moving throttle valve capable of preventing the blockage of a circular clearance by dust in working fluid with a simple constitution. In this throttle valve 5 used in a fluid pressure circuit and comprising a throttle valve ...
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JP2013147049A |
To provide an aircraft actuator hydraulic system capable of driving an actuator even when a loss or degradation of the function of an airframe-side hydraulic power source, preventing decrease in airframe efficiency, while suppressing hea...
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