LARGE MINING HEIGHT FILLING COAL MINING HYDRAULIC SUPPORT WITH COAXIALLY HINGED FRONT AND REAR TOP BEAMS

摘要

A large mining height filling coal mining hydraulic support with coaxially hinged front and rear top beams comprises a pedestal (13), a front top beam (2), and a forepoling bar (1) connected to the front portion of the front top beam (2). A front pillar (12) secured on the pedestal (13) is provided below the front top beam (2), the rear portion of the front top beam (2) is provided with a rear top beam (4), a rear pillar (10) secured on the pedestal (13) is provided below the rear top beam (4), a four bar mechanism (11) is provided between the front pillar (12) and the rear pillar (10), a solid-filling mining conveyor (6) is suspended on the rear top beam (4), a pulling jack (5) is provided on the rear top beam (4), a tamper mounting platform (9) with the height being 600 mm-1600 mm is provided at the rear portion of the pedestal (13), a tamper (7) with the amplitude of swing being 0°-60° is hinged to the tamper mounting platform (9), a rotation jack (8) connected to the tamper (7) is provided on the rear top beam (4), and the two ends of the rotation jack (8) are respectively hinged to the front portion of the rear top beam (4) and the upper portion of the tamper (7). The support not only can provide a milling space for a large mining height working face with the mining height being 4.5m-6.0m, but also can densely filling the gob.