| 摘要 |
PROBLEM TO BE SOLVED: To provide a high-pressure cleaning car capable of temporarily cleaning in failure. SOLUTION: The high-pressure cleaning car has a pressure control valve 64 for controlling the pressure of a cleaning water in accordance with an air pressure to be supplied and an air circuit 24 for introducing an air to the pressure control valve 64. The air circuit 24 has an air tank 20, an air pipe 91, one end of which is connected to the air tank 20, an air-pressure adjusting circuit 99 connected to the other end of the air pipe 91, and an air pipe 96, one end of which is connected to the pressure control valve 64. The air pipe 96 has a first regulator 27 for adjusting the air to a first air pressure and the air-pressure adjusting circuit 99 has a second regulator 28 for adjusting the air to a second air pressure lower than the first air pressure. An air pipe 97 is connected to the air pipe 91. The air circuit 24 has a three-way valve 29 which can change a first state for connecting the air pipe 96 and the air-pressure adjusting circuit 99 and a second state for connecting the air pipe 97 and the air pipe 96. COPYRIGHT: (C)2008,JPO&INPIT
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