A shovel includes a boom (4), a rotating upper body (2) that supports the boom (4), a diesel engine (8) mounted on the rotating upper body (2), a cab (3) mounted on the rotating upper body (2), a rotating frame (14) mounted on the rotating upper body (2), a fuel tank (19) mounted on the rotating…
A shovel according to an embodiment of the present invention includes a fuel tank (55) that stores fuel of an engine (11); a fuel residual amount sensor (55a) that detects a residual quantity state of the fuel in the fuel tank (55); a urea water tank (50) that stores urea water that is to be used…
A hybrid shovel includes an engine 11 that is controlled at a constant revolution speed, a motor generator 12 that assists the engine 11, a controller 30 that controls a drive of the motor generator 12, and a main pump that is driven by the engine 11. The controller 30 assists the engine 11 by the…
A shovel related to the embodiment of the present invention includes a capacitor unit (19) that is made of multiple cells for charging electricity generated by a generator; equalizing circuits (141-n) each of which is connected to the corresponding cell (19-n) and includes a balancing switch…
A shovel that performs a work by being operated by a driver includes an attaching part 50 configured to be capable of attaching a multifunctional portable information terminal 40 having a display and input function, a wireless communication function and a voice recognition function, and a control…
A shovel includes an upper-part turning body performing a turning operation on a lower-part turning body. An end of a boom is rotatably attached to the upper-part turning body. One end of an arm is rotatably attached to the other end of the boom. A working element is rotatably attached to the other…
A peripheral image display device for displaying a peripheral image that is an image around a construction machine and is captured by at least one imaging unit includes a guideline setting unit that sets a guideline, which includes at least two color information pieces, on the peripheral image…
A shovel includes a lower-part movable body (1), an upper-part turnable body (3) turnably mounted on the lower-part movable body (1), a boom (4) including a first end rotatably attached onto the upper-part turnable body (3), an arm (5) including a first end rotatably attached to a second end of the…
A turning drive device includes a turning motor (21) that is driven by an electric power from an electrical energy storage system (120) and is configured to drive a turning body (3), an inverter (20) that controls a drive operation of the turning motor, a controller (30) that is connected to the…
A hybrid work machine includes an engine (11), a motor generator (12) connected to the engine (11), an electric energy storage unit (120) configured to store electric power generated by the motor generator (12), and a control part (30) configured to control driving of the motor generator (12). The…
A shovel includes an internal combustion engine (11), a hydraulic pump (14) connected to the internal-combustion engine, a generator (12) connected to the internal-combustion engine, and a control part (30) that controls the generator. The control part (30) increases an electric generation load of…
A turning body (3) is driven to turn by a turning electric motor (21). A turning brake hydraulic motor (40) is mechanically connected to the turning body (3) or the turning electric motor (21). By disconnecting the intake port and the discharge port of the turning brake hydraulic motor (40), the…
A shovel includes an engine; a hydraulic pump driven by the engine; an attachment including a boom, the attachment being driven with hydraulic fluid discharged by the hydraulic pump; a motor generator configured to assist driving by the engine; an electric power accumulating part configured to…
A hydraulic shovel includes an engine; a hydraulic pump driven by the engine; an excavating attachment which is driven by high oil discharged from the hydraulic pump; a motor generator that assists a power supply of the engine; and an assist control unit that controls the motor generator to assist…
A turning drive control unit configured to control driving of the rotation mechanism of a construction machine driven to turn by an electric motor includes a drive command generation part configured to generate a drive command driving the electric motor based on the amount of operation input via…