Mining diameter-expanding type anti-impact single hydraulic bracket
A hydraulic support and single-piece technology, which is applied in pillars/supports, mining equipment, earthwork drilling and mining, etc., can solve the problems of insufficient dynamic response time of the overflow valve and too late to open the overflow valve, etc.
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[0010] Examples, see attached figure 1 , 2 , the expansion-diameter anti-shock single hydraulic support for mining is to make the upper body of the single hydraulic support 5 into the shape of a variable-diameter boss, and install an insert with an expanding sleeve on the variable-diameter upper boss of the single hydraulic support 5 The expansion tube 2 of groove 2-1 coincides with the single hydraulic support 5 in the same shape, and the expansion sleeve insertion groove 2-1 is formed by turning over the trumpet-shaped opening at the lower end of the expansion tube 2, and the lower end of the single hydraulic support 5 The outer diameter and the outer diameter of the upper end form a shoulder, the single hydraulic support 5 is fixedly connected with the anti-tilt sleeve 4 by threads, the anti-tilt sleeve 4 is set on the periphery of the expansion sleeve insertion groove 2-1, 2-1 inserts a diameter-expanding sleeve 3 with a closed upper end, the inner closed end of the diame...
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