煤矿机械
煤礦機械
매광궤계
Coal Mine Machinery
2015年
9期
35-36,37
,共3页
液压支架%平衡千斤顶%推导过程%计算方法%选择原则
液壓支架%平衡韆斤頂%推導過程%計算方法%選擇原則
액압지가%평형천근정%추도과정%계산방법%선택원칙
hydraulic roof support%stabilizing cylinder%derivation process%calculation methods%selection principal
平衡千斤顶是两柱掩护式液压支架的重要组成部分，调节支架顶梁合力、合力作用点的位置及顶梁的载荷分布，其缸径和上、下腔安全阀卸载压力的选择至关重要，一方面要保证顶梁前端能承受足够大的载荷而又要保证不会出现支架失稳，另一方面要保证顶梁后端和掩护梁能承受岩石重量，针对这2个方面的要求，提出了其具体的推导过程、计算方法和选择原则。
平衡韆斤頂是兩柱掩護式液壓支架的重要組成部分，調節支架頂樑閤力、閤力作用點的位置及頂樑的載荷分佈，其缸徑和上、下腔安全閥卸載壓力的選擇至關重要，一方麵要保證頂樑前耑能承受足夠大的載荷而又要保證不會齣現支架失穩，另一方麵要保證頂樑後耑和掩護樑能承受巖石重量，針對這2箇方麵的要求，提齣瞭其具體的推導過程、計算方法和選擇原則。
평형천근정시량주엄호식액압지가적중요조성부분，조절지가정량합력、합력작용점적위치급정량적재하분포，기항경화상、하강안전벌사재압력적선택지관중요，일방면요보증정량전단능승수족구대적재하이우요보증불회출현지가실은，령일방면요보증정량후단화엄호량능승수암석중량，침대저2개방면적요구，제출료기구체적추도과정、계산방법화선택원칙。
Stabilizing cylinder is a main part of two-leg hydraulic shield. It is used to adjust the point of the resultant force that the floor applies to the canopy and the loading point on the canopy. It is very important to choose the right diameter of the cylinder and right pressure of the yield valve in both the upper and the lower cylinder chambers to make sure not only that the front part of the canopy can stand large loading and the roof support stands firm but also that the hinder part of the canopy and the gob shield can stand the weight of certain rock. Based on those two requirements, this thesis provides the specific derivation process, calculation methods and selection principal.
