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在公路施工中,我国近几年沥青拌和施工法有较大的发展,但撒布骨料灌注沥青的施工方法仍然被普遍采用,从必要性和经济性分析,骨料撒布机将永远是筑路工程的专用设备之一。目前,我国筑路用骨料(主要是石料)的粒径均在80mm 以下,据统计表明,包括底基层使用的石料,绝大多数为60mm 以下的石料。所以撒布30～60mm 粒径的石料是施工中最艰苦的工作之一。我国从50年代开始引进英国石料撒布机(结构形式和性能参数与目前国内的 SA3型相
In highway construction, the asphalt mixing construction method has been greatly developed in our country in recent years. However, the construction method of asphalt pouring aggregate is still widely used. From the necessity and economic analysis, the aggregate spreader will always be the road construction Project one of the special equipment. At present, China’s road building aggregates (mainly stone) particle size are below 80mm, according to statistics, including the use of the underlying stone, the vast majority of stone below 60mm. Therefore, spreading 30 ~ 60mm particle size of stone is one of the most difficult work in construction. China’s introduction of the British stone spreader from the 1950s (structural form and performance parameters and the current domestic SA3 phase