| 发明名称 |
ELECTRIC DRIVING WHEEL TYPE WORK VEHICLE |
| 摘要 |
An electric driving wheel type work vehicle has a traveling motor 21, an inverter 313 for supplying the motor with three-phase power converted from DC power, a pre-driver circuit 312 for supplying a gate signal 316 to the inverter 313 on the basis of an input PWM signal, a controller 311 for outputting to the pre-driver circuit the PWM signal 315 for controlling the driving of the motor 21, parking brake means 10, and parking brake condition detection means 12 that detects the condition of the parking brake means 10. When the parking brake condition detection means 12 detects the parking brake means 10 has been operated, the pre-driver circuit 312 cuts off the output of the gate signal 316, or the input of the PWM to the pre-driver circuit 312 is cut off. |
| 申请公布号 |
US2015224895(A1) |
申请公布日期 |
2015.08.13 |
| 申请号 |
US201314425328 |
申请日期 |
2013.09.06 |
| 申请人 |
HITACHI CONSTRUCTION MACHINERY CO., LTD. |
发明人 |
Morita Yuichiro;Yoshihara Shigeyuki;Ishida Kazuo;Ito Noritaka;Shimada Hirofumi |
| 分类号 |
B60L15/08;H02P27/08;B60L15/20 |
主分类号 |
B60L15/08 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. An electric driving wheel type work vehicle having a traveling motor, an inverter for driving the motor, a pre-driver circuit for supplying a gate signal to the inverter on the basis of an input signal, a controller for outputting to the pre-driver circuit the signal for controlling the driving of the motor, and parking brake means, the electric driving wheel type work vehicle comprising:
parking brake condition detection means that detects a condition of the parking brake means; wherein, when the parking brake condition detection means detects that the parking brake means has been operated, the pre-driver circuit cuts off an output of the gate signal. |
| 地址 |
Tokyo JP |
