液压支架双伸缩立柱结构优化及焊接注意事项
刘鸿玉
（晋能控股装备制造集团力泰有限责任公司，山西 大同 037036）
摘要： 在维修液压支架立柱时，针对其结构存在的缺陷，对缸底、缸筒、活柱、外卡键、支撑环等进行了升级改造，
加强了缸体、活柱的结构，延长了立柱的使用寿命。分析了液压支架双伸缩立柱结构的优化，并提出了焊接注意事项。
关键词： 液压支架；缸体；活柱；外卡键
中图分类号： TD355⁺.4     文献标识码： A     文章编号： 2095-0802-(2021)05-0046-02
Structure Optimization and Welding Precautions for Double Telescopic Column of
Hydraulic Support
LIU Hongyu
(Litai Co., Ltd., Jineng Holding Equipment Manufacturing Group, Datong 037036, Shanxi, China)
Abstract: The cylinder bottom, cylinder barrel, movable column, external key and support ring was optimized for the defects of
structure of the hydraulic support column. The structure of the cylinder body and movable column was strengthened, and the service
life of the column was extended. This paper analyzed the structure optimization of the double telescopic column of the hydraulic
support, and put forward the welding precautions.

Key words: hydraulic support; cylinder body; movable column; external key