| 摘要 |
PURPOSE: An oil pressure type vibrationless macadam roller is provided to easily control a driving of a roller by a driver and to quickly meet when an unexpected situation is generated. CONSTITUTION: A brake button(16) is pushed by generating an unexpected situation during driving a macadam roller with an operation of a forward and backward lever(13). An oil pressure into each hydraulic motor(50) is isolated by operating an isolating operation of electronic valves(40) installed in front of each ports(51)(52) of each hydraulic motor(50). A rotation of each hydraulic motor(50) a rotation of a rear wheel is stopped. Thereby the macadam roller is quickly stopped.
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