DOI: 10.11799/ce201805005
Lowering force analysis of four-column large tail beam plate-insert top-coal caving support and the structure optimization
LI Ti-jian
ZHANG Jin-hu
Abstract：Aiming at the lowering difficulty of top-coal caving plate-insert support with large tail beam, the lowering force of the hydraulic support is analyzed. Firstly, we analyze the additional force generated by the self-weight of the coal releasing mechanism at the hinge point of the top beam, and deduced the influence of weight of each component on hinge force of the vertical column when the support is lowered. According to actual calculations, it is confirmed that it can be difficult for support to descend, and the hinge position of the tail beam jack and the limit swing angle of the tail beam have great influence on the support lowering force. Through the optimization of the tail beam jack hinges and limiting the limit swing angle of the tail beam, the support lowering difficulty can be solved.
Keywords：hydraulic supporttail beamsupport lowering forcestructure optimization
Publication Date：2018-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：3( 18-20 )