METHOD FOR RECONSTRUCTION OF SHAFT SUPPORT AND UNIT FOR IMPLEMENTATION OF METHOD Russian patent published in 2024 - IPC E21D1/03 E21D1/08 E21D5/12 

FIELD: mining.

SUBSTANCE: group of inventions relates to the field of mining, namely to methods of reconstruction of vertical main shafts and equipment for removal of concrete support using a mechanized method. Reconstruction method includes inspection of shaft support and identification of sections requiring dismantling of concrete support, their preparation for dismantling, dismantling and erection of support again. Unit for removal of concrete support of a shaft includes a frame covering the shaft, which along the perimeter is connected by means of spacer jacks to the shell. On one side, frame is connected to central suspension by means of ropes, and on the other side – through a rotation drive with an element made with possibility of rotation relative to the shaft axis, which includes a fixed part and a movable part, on which actuator is arranged, made with possibility of rotation relative to fixed part through bearing assembly. Actuator is equipped with working member, working member drive and working member feed mechanism, which is made as a jack, connected by one end to the handle, on which the working element is fixed, and by the other end – to the actuator body, besides, the handle is pivotally connected to the actuator body.

EFFECT: higher reliability of newly erected support.

4 cl, 17 dwg, 1 tbl