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Assignee: KOBELCO CONSTRUCTION MACHINERY CO., LTD.


Location: Hiroshima-shi, JP
No. of patents: 70

1    
NumberTitleIssue Date
8151688Hydraulic circuit of construction machine
A throttle path for returning a part of pilot oil to a tank is formed by a tank path provided in a valve block of a control valve and a notch provided in a spool thereof. The above path is opened within a section from a vicinity of a stroke where a hydraulic actuato...
04/10/2012
8075242Working machine with structure for assembling boom thereof
Bosses extending in the boom width direction are provided in a front end part of a main boom body rotated upward, and hooks opening downward are provided in a base end part of an extension boom body rotated downward. The above hooks and the bosses are arranged so as...
12/13/2011
D647543Screen display for a construction machine
10/25/2011
8020799Hydraulic crusher
A hydraulic crusher includes crushing arms, a crusher body having a hollow portion extending in the longitudinal direction, and hydraulic cylinders. The hydraulic crusher includes four first hydraulic hoses which have proximal caps connected to ports of the crusher ...
09/20/2011
8006991Construction machine
In a hydraulic excavator, in a rear part of an upper rotating body mounted on a lower traveling body is disposed an engine room, and in a front surface of a partition wall for partitioning the front surface side of the engine room from the exterior is provided a ste...
08/30/2011
7993090Working machine with structure for assembling boom thereof
Bosses extending in the boom width direction are provided in a front end part of a main boom body rotated upward, and hooks opening downward are provided in a base end part of a front boom body rotated downward. In a state that the bosses and the hooks are engaged w...
08/09/2011
7988167Construction machine
A highest footboard of steps serving as an up and down passage provided on the laterally opposite side to a cabin in an upper rotating body is located at a higher position than a highest footboard of steps of standard specifications. In a space which is height diffe...
08/02/2011
D642205Cab for construction machine
07/26/2011
7967980Construction machine having working oil tank with filter case
A rear half part of a surface of a main body of a working oil tank installed in line with a control valve opposing to the valve is dented in an inclining surface shape in the direction moving away from the valve so that between both the tank and the valve, is formed...
06/28/2011
7963716Pin connection device
Assembly of a pin guide member for retaining a pair of connecting pins is facilitated for improvement in an assembling property and cost reduction. On the premise that inner brackets are overlapped with outer brackets, and pins are inserted into pin holes thereof so...
06/21/2011
7950725Reinforced structure for cabin of working machine
A reinforced structure for a cabin of a working machine is disclosed, which comprises a cabin, a boom installed along the cabin, and a reinforcing member provided for the cabin. The cabin includes front pillars, upper pillars and rear pillars. The reinforcing member...
05/31/2011
7921764Hydraulic control device of working machine
A rotation prioritizing valve serving as a flow rate control valve of a hydraulic pilot type is provided on the meter-in side of an arm cylinder. At the time of a combined operation of arm pulling and rotation, the rotation prioritizing valve is activated by rotatio...
04/12/2011
7878770Hydraulic circuit of construction machine
A hydraulic circuit for actuating an electromagnetic proportional pressure reducing valve by a command current outputted from a controller based on an operation amount of a remote control valve, and by a secondary pressure of the pressure reducing valve, actuating a...
02/01/2011
7874390Working machine
On the premise that a partition wall for defining an engine room is provided on the left side of a rear portion of an upper frame the partition wall constituting an upper rotating body and that an engine and a cooler are disposed in the engine room, a front support ...
01/25/2011
D631067Traveling machine for construction machine
01/18/2011
D629817Traveling machine for construction machine
12/28/2010
D629816Traveling machine for construction
12/28/2010
7854471Construction machine
Handrail mounts are provided in a bottom portion of a cast upper frame, and lower ends of side supports of a handrail are attached to the above handrail mounts. A base plate for attaching a floor plate is hanged and fixed between the side supports at a higher positi...
12/21/2010
7854284Upper rotating body and construction machine therewith
The present invention is provided with a pair of vertical plates disposed on a rotating frame, a fuel tank and a working oil tank aligned on the rotating frame in the front-back direction, hydraulic pipes for coupling a control valve provided in the working oil tank...
12/21/2010
7849685Control device for hydraulic cylinder and operating machine including control device
A control device includes an arm cylinder having a cylinder body and a piston that slides inside the cylinder body and a pump that supplies working oil to the arm cylinder, and decelerates the piston when it approaches a stroke end of the arm cylinder by adjusting a...
12/14/2010
7841314Cooling structure of construction machine
To improve soundproof performance on an air intake side of a cooling structure of a construction machine without enlarging an air intake chamber. An air intake chamber is provided on the air intake side of a heat exchanger in an engine room, and a first air intake p...
11/30/2010
7833300Mounting structure of filter for cooler of construction
On the front surface side of a cooler, a filter mounting portion provided with a filter abutment surface with which a filter is brought into abutment from the front side of the filter mounting portion is provided. The front end side of the filter pushed in from a ma...
11/16/2010
7828371Mounting structure of drivers cab to base frame and construction machine therewith
A restraining means includes a shaft member projecting laterally from a frame member, and a plate which is fixed to a base frame and in which an insertion hole capable of inserting the shaft member therethrough is formed. The restraining means is configured so that ...
11/09/2010
7818968Hydraulic control device of construction machine
A hydraulic control device of construction machine is provided with a control valve lying between a hydraulic pump and a hydraulic actuator for opening and closing a meter-in control flow path, and a flow rate control valve lying between a pump discharge line on the...
10/26/2010
7810597Battery placement and support on the body frame of a construction machine
A concave portion is provided on a front surface side of a counterweight provided in a rear end portion of an upper rotating body in a vertically penetrating state, a battery is housed in the concave portion in a state where a weight of the battery is supported by a...
10/12/2010
7810321Relief pressure switching apparatus for hydraulic working machine
In a relief pressure switching apparatus for hydraulic working machine for switching a relief pressure of a hydraulic actuator circuit in accordance with a specification of a compression crushing apparatus or a breaker to be installed, electromagnetically variable r...
10/12/2010
7745947Hybrid working machine
The present invention is to drive a hydraulic pump and a generator motor by an engine, to electrically charge a battery by a generator action of the generator motor, and to drive the generator motor by electric power of the battery so as to assist the engine. A gove...
06/29/2010
7728449Hybrid working machine
The present invention is to drive a hydraulic pump and a generator motor by an engine, electrically charge a battery by a generator operation of the generator motor, and assist the engine through driving the generator motor by electric power of the battery. On the p...
06/01/2010
7726435Construction machine
In a hydraulic excavator wherein a control valve unit having a plurality of control valves in a united form and an operation pattern switching valve for switching from one to another among combined patterns of operating valves and control valves are disposed side by...
06/01/2010
7722308Construction machine
On the laterally opposite side of an upper frame constructing an upper rotating body to a cabin, are installed devices in a state that a pin insertion and removal space sufficient for inserting and removing a boom foot pin in the axial direction is ensured, and in a...
05/25/2010
7708100Construction machinery
After a remote control valve has been brought into a non-working state, a stop signal is to be sent from an engine controller in a controller to a governor controller in an engine to stop the engine automatically, under the condition that an illuminating lamp is tur...
05/04/2010
7669413Hybrid construction machine
In a hybrid excavator, a hydraulic pump and a generator motor are connected in parallel to an output shaft of an engine and a rotation motor is driven by a battery. The generator motor assists the engine by performing a motor function. Power consumption of each of t...
03/02/2010
7659677Rotation brake method and device for working machine
To stop, in an emergency, a revolving superstructure quickly from rotating while preventing damage of a mechanical brake. A revolving superstructure is driven swiveling using a permanent magnetic-type swiveling electric motor; in an emergency, such as a malfunction ...
02/09/2010
7634961Hydraulic circuit for construction machine
A hydraulic circuit including a first throttle disposed upstream of pressure-reducing valves of a remote-control valve, which operates a control valve of hydraulic pilot type, so as to reduce primary pressures supplied from a pilot pump to the pressure-reducing valv...
12/22/2009
7610755Hydraulic control apparatus of working machine
With respect to a method of controlling a pump flow rate of a hydraulic pump, a method having a small flow rate command value is selected between a pressure feedback control for controlling the pump flow rate based on a set pressure (a cutoff pressure) and a pump pr...
11/03/2009
7594396Hydraulic controller for working machine
A hydraulic controller for working machine according to the present invention, which presupposes an electronic control system where an integrated bleed-off valve common to hydraulic actuators is used for bleed-off control and the bleed-off valve is controlled by the...
09/29/2009
7594395Hydraulic control device for working machine
A hydraulic control device for a working machine includes control valves; hydraulic actuators controlled by corresponding control valves and divided into groups; unified bleed-off valves disposed on discharge lines of first and second hydraulic pumps; central bypass...
09/29/2009
7559271Working machine
Of a plurality of hydraulic signals output from an operating device, a hydraulic signal is input into a control valve serving as a hydraulic control device without conversion, and particular hydraulic signals are converted into electric signals corresponding to thei...
07/14/2009
D594884Traveling body for construction machine
06/23/2009
7530184Working machine
A working machine having a blade is disclosed, the blade comprising a body blade and an extension blade, the body blade having a body-side mounting portion having a body-side mounting hole and the extension blade having an extension-side mounting portion having an e...
05/12/2009
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