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苏联T—13K11型掩护支架,在我局四矿J(5.6)—177工作面使用两年零十个月,于1982年送我厂进行大修。在解体检查鉴定过程中,发现损坏最严重的是托梁,其损坏情况主要有以下几方面: 1.托梁前后两端向下严重变形,焊缝产生裂缝; 2.托梁上盖板沿立筋呈方块状局部凹陷,盖板被撕开; 3.托梁下盖板凹陷变形; 4.托梁与掩护梁连接销孔变形拉长达20～40mm。为了便于分析研究托梁的损坏原因,对其
Soviet Union T-13K11-type shield bracket, four mines in our Bureau J (5.6) -177 face to use two years and ten months, sent to our factory in 1982 for overhaul. In the disintegration inspection and identification process, found that the most serious damage is the joist, the damage is mainly the following aspects: 1 before and after the joist both ends of the serious deformation downwards, the weld cracks; 2 joist along the cover Reinforced ribs were square local depression, the cover is torn open; 3. Joist lower cover depression deformation; 4. Joist and shield beam connection pin hole deformation up to 20 ~ 40mm. In order to facilitate the analysis of the cause of joist damage to it