基于刚-液平面运动学模型的液压支架平衡千斤顶控制模式分析
发布时间：2018-09-07 08:25
【摘要】：平衡千斤顶是两柱掩护式液压支架的重要调控部件,常规双向锁控制模式易造成安全阀频繁喷液,不能很好适应自动化控制要求。利用AMESim软件建立了某两柱掩护式液压支架刚-液平面运动模型,模拟移架前后顶板5°倾角变化条件,比较了传统双向锁控制模式和差动控制、低压控制和浮动双向锁控制模式下液压支架姿态和平衡千斤顶响应过程。结果表明:后3种控制模式均可有效避免安全阀开启,降压效果方面低压控制最优、浮动双向锁次之,差动控制有喷液风险;非主动调控模式下,差动控制和低压控制模式顶梁前端先接顶,浮动双向锁控制顶梁后端先接顶。研究结果为平衡千斤顶控制系统的选型和优化提供新参考。
[Abstract]:Balance Jack is an important control component of two-column shield hydraulic support. The conventional two-way lock control mode can easily cause frequent injection of relief valve, which can not meet the requirements of automatic control. The rigid-liquid plane motion model of a two-column shield hydraulic support is established by using AMESim software. The changing conditions of 5 掳inclination of roof before and after moving the frame are simulated, and the traditional two-way lock control mode and differential control are compared. Low-pressure control and floating two-way lock control mode of hydraulic support attitude and balance Jack response process. The results show that the latter three control modes can effectively avoid the opening of the relief valve, the low pressure control is the best in the effect of lowering the pressure, the floating bidirectional lock is the second, and the differential control has the risk of injection. The front end of the top beam is connected first with the differential control and the low voltage control mode, and the back end of the top beam is first connected with the floating bidirectional lock. The results provide a new reference for the selection and optimization of balanced Jack control system.
【作者单位】： 天地科技股份有限公司开采设计事业部;煤炭科学研究总院开采研究分院;
【基金】：国家自然基金(山西煤基低碳联合基金)重点支持项目(U1610251)
【分类号】：TD355.4
，
本文编号：2227737
[Abstract]:Balance Jack is an important control component of two-column shield hydraulic support. The conventional two-way lock control mode can easily cause frequent injection of relief valve, which can not meet the requirements of automatic control. The rigid-liquid plane motion model of a two-column shield hydraulic support is established by using AMESim software. The changing conditions of 5 掳inclination of roof before and after moving the frame are simulated, and the traditional two-way lock control mode and differential control are compared. Low-pressure control and floating two-way lock control mode of hydraulic support attitude and balance Jack response process. The results show that the latter three control modes can effectively avoid the opening of the relief valve, the low pressure control is the best in the effect of lowering the pressure, the floating bidirectional lock is the second, and the differential control has the risk of injection. The front end of the top beam is connected first with the differential control and the low voltage control mode, and the back end of the top beam is first connected with the floating bidirectional lock. The results provide a new reference for the selection and optimization of balanced Jack control system.
【作者单位】： 天地科技股份有限公司开采设计事业部;煤炭科学研究总院开采研究分院;
【基金】：国家自然基金(山西煤基低碳联合基金)重点支持项目(U1610251)
【分类号】：TD355.4
，
本文编号：2227737
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