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由兰州建筑通用机械总厂设计试制的JS500双卧轴搅拌机及由长沙建筑机械研究所设计、该厂试制的DJB—25A步履式沉拔桩架于1988年12月24日在兰州通过省级鉴定。 DJB—25A桩架在试制过程中,对整机的性能、结构进行了系统的调试,并对部分部件在原设计的基础上进行了改进,从而保证了该机使用的可靠性。此外,还对该机在工业性考核过程中出现的问题如卷扬系统、顶部滑轮组、鄂头、支脚、提挂等装置都重新进行了优化设计,使该机达到了结
The JS500 double-horizontal shaft mixer designed by Lanzhou Construction General Machinery General Plant and the DJB-25A walking pile-pulling pile rack designed by Changsha Construction Machinery Research Institute were passed by the provincial appraisal in Lanzhou on December 24, 1988. . DJB—25A pile racks were systematically debugged in the trial production process for the performance and structure of the whole machine, and some parts were improved on the basis of the original design, thus ensuring the reliability of the aircraft. In addition, problems such as the winch system, the top pulley block, the E-head, the support legs, and the lifting and hanging devices of the aircraft during the industrial assessment process were re-optimized and the machine reached its end.