Structural Improvement Analysis of Key Components of Hydraulic Bracket under Offset Load Condition
In order to improve the strength and stiffness of the roof beam of the hydraulic station bracket and eliminate the hidden danger of mine operation,structural optimisation measures are adopted to improve the structure of the roof beam,firstly,thickening the transverse reinforcement plate;secondly,combining the transverse reinforcement above the column nest with the use of an additional layer of welded sticker plate and diagonal lapping ribs to strengthen the performance of the cover plate and the reinforcement plate at the weak beams.After the improvement,the distribution trend of top beam pressure and deformation is basically the same as that before the improvement,and the maximum stress in the stress concentration area is reduced by about 435 MPa,and the maximum value of top beam deformation in the vicinity of the reaming holes of vertical reinforcement plate above the column nest on the pad side is reduced from 2.2 mm to 1.6 mm.
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