1973年全路养路机械化会议推荐介休式四头捣固机,由铁道部组织了专门班子研究改进并组织有关单位同志选型鉴定,最后以铁道部第三设计院的叁标养1001通用图发行全路推广,按照通用图,我局先后生产52-4型四头捣固机架共560台,其中由衡阳铁路机修厂集中生产了150台,使我局机械捣固作业,从“一 In 1973, the road maintenance mechanization meeting recommended Jiexiu four head tamping machine, the Ministry of Railways organized a special team to study and improve the organization and organization comrades selected type identification, and finally to the Ministry of Railways Third Design Institute of the three raised 1001 General Figure According to the General Plan, our bureau has successively produced 560 sets of 52-4 four-head tamping racks, among which 150 sets have been centrally produced by Hengyang Railway Machinery Plant, enabling me to conduct mechanical tamping work from "one