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针对现有四连杆型液压支架的立柱及顶梁均不能承受侧向力,侧向力通过掩护梁传递给连杆易造成倒架和支架机构损坏的原理性缺陷,提出一种基于3-RPC型并联机构的双并联液压支架的设计方案.文中对液压支架的工作空间进行分析,给出顶梁的运动轨迹公式;分析液压支架在偏载和大倾角工况下的受力情况,得出支架具有三向受力的特点,并给出准确的力学关系式;运用ADAMS软件对液压支架进行稳定性模拟仿真,验证了该并联液压支架的设计符合煤矿井下支护的要求,在技术上是可行的.
For the existing four-link hydraulic support column and the top beam can not withstand the lateral force, the lateral force transmitted to the connecting rod through the shield beam can cause the collapse of the frame and bracket mechanism defects, proposed a 3- RPC parallel mechanism of double parallel hydraulic support design scheme.This paper analyzes the working space of the hydraulic support, gives the roof beam trajectory formula; analysis of hydraulic support under the conditions of partial load and large tilt conditions, which have The support has the characteristics of three-direction force, and gives the exact mechanical relationship; using ADAMS software to simulate the stability of the hydraulic support to verify the design of the parallel hydraulic support in line with the requirements of coal mine support, technically It works.