| 摘要 |
Driving motor controlling device of a construction machine, including a driving motor (120) which is included in the construction machine having a swivel joint (111) interposed between an upper body and a lower body, and is connected to a pump (112,113) and a tank (114) through the swivel joint, and a motor control valve (121) which has a neutral position (121a), a normal rotation position (121b,121c), and a reverse rotation position (121d,121e), and is switched based on a command from a control device and a pressure of an inflow side of hydraulic oil into the driving motor, wherein said valve (121) is disposed in the lower body in which the driving motor is disposed, and is integrally formed with the driving motor (120), and wherein, upon a warming up operation, the hydraulic oil discharged from the pump (112,113) is circulated to the tank (114) disposed in the upper body through the swivel joint (111) and said valve (121). The device further comprises a pressure detector (123) which detects the pressure of the inflow side of the driving motor (120) and a control unit (124). |
