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为满足国内公路交通事业发展的需要,为了实现道路交通标志线在公路与城市的实施,交通部公路科学研究所设计的三马力手扶式路面标线画线车由交通部公路一局修配厂试制并于1984年底经交通部筑路机械测试中心测试通过,投入小批量生产。SH3型手扶式画线车机构设置比较合理,布置紧揍,转向灵活、有自动断线装置,该车画出的直线度高,开始喷漆和结束喷漆的两端
In order to meet the needs of the development of domestic road traffic, in order to realize the implementation of road traffic signs in highways and cities, the three-horsepower walk-behind road marking line designed by the Institute of Highway Research of the Ministry of Communications is prepared by the Ministry of Communications Highway Bureau. Trial production and testing at the end of 1984 by the Ministry of Transportation Road Construction Machinery Testing Center, put into small batch production. The SH3 walk-behind line drawing machine has a reasonable setup, tight arrangement, flexible steering and automatic disconnection device. The car draws a high degree of straightness and begins to spray paint and finish the painting at both ends.