Komatsu Corporation

Takao Nagano

Kouichi Watanabe

Kouya Iizuka

Hiroaki Murata

Makoto Hasegawa

Ryouta Kaneko

Fuyuhiko Mizuno

Takashi Hirota

A charging control device (A) according to the present invention includes a determination part that determines whether or not an abnormality in input power occurs on the basis of input power information on the input power and a predetermined determination threshold value. The determination part makes the determination on the basis of the input power information when a predetermined time has passed after an input of the input power.

Charging control device, work machine, and charging control method

A construction machine includes an engine unit, a body frame, and mounting portions. The engine unit includes an engine, a hydraulic pump driven by drive force of the engine, and a generator motor disposed between the engine and the hydraulic pump. The generator motor has a rotary shaft connected to an input shaft of the hydraulic pump and to an output shaft of the engine and a first housing fixed on an engine side and a second housing fixed on a hydraulic pump side. The engine is installed on the body frame. The mounting portions are provided to the engine and to the first housing to support the engine unit on the body frame.

Construction machine

A generator motor connected to an output shaft of an engine mounted in a work machine includes a terminal box that houses a connector for connecting an exterior electric-power-supplying cable to the generator motor. While the terminal box is provided to the generator motor, the connector is provided facing downward and the electric-power-supplying cable is connectable to the connector from underneath the connector.

Generator motor and work machine

A generator motor connected to an output shaft of an engine mounted in a work machine includes a terminal box that houses a plurality of connectors for connecting an exterior electric-power-supplying cable to the generator motor. While the terminal box is provided to the generator motor, the plurality of connectors are juxtaposed in a direction intersecting an orthogonal plane that is orthogonal to a rotation shaft of the generator motor.

A generator motor connected to an output shaft of an engine mounted in a work machine includes a terminal box for connecting an exterior electric-power-supplying cable to the generator motor. The terminal box includes a casing having an inner space in communication with an inside of a housing of the generator motor. A casing of the terminal box is detachably provided to the housing of the generator motor.

A construction machine includes an engine, a hydraulic pump driven by drive force of the engine, a generator motor, and a dipstick tube. The generator motor is disposed between the engine and the hydraulic pump. The generator motor has a rotary shaft connected to an input shaft of the hydraulic pump and to an output shaft of the engine and an oil pan disposed in a lower part of a holding space formed inside a housing. The dipstick tube has a connector provided at a location that communicates with the oil pan of the generator motor, and a dipstick opening disposed above the generator motor, for checking a level of oil in the oil pan.

A cooling structure of a generator motor includes: a first passage provided to an end side member placed at one end of a housing of a generator motor, the first passage extending toward a rotation center axis of an input/output shaft housed in the housing, the first passage opening to a side of the input/output shaft, and the first passage including a restriction section halfway through; and a second passage provided to the end side member, branching off from the first passage at a position on an outer side in a radial direction of the input/output shaft than the restriction section and subsequently extending toward a rotor attached to an outside of the input/output shaft, and the second passage opening to a side of the rotor.

Cooling structure of generator motor and generator motor

A cooling structure of a generator motor includes: a rotor holder; a rotor core; a first blade; and a second blade, wherein the second blade includes a recessed coolant holding portion, provided on an outer circumference of the second blade on an opposite side to the rotor core and opening inward in the radial direction, for collecting a coolant, and a drain hole radially penetrating an outer circumference of the coolant holding portion for draining the coolant collected in the coolant holding portion.

Growing community of inventors

Kawasaki, Japan

Takao Nagano