Patent ID: 6505709
Filing Date: 2003-01-14
Classification: E21F

Abstract:
A sleigh-like device for use in a mining raise, said sleigh-like device having a longitudinal axis and a transverse axis, said sleigh-like device comprising:a base frame for sliding along the mining raise in a direction parallel to the longitudinal axis, said base frame having a bottom surface with sliding means extending parallel to the longitudinal axis, a top surface having front and rear opposite ends, and a central portion having two lateral sides extending parallel to the longitudinal axis, the sliding means of the base frame comprising: two runners extending parallel to the longitudinal axis and projecting from the bottom surface of the base frame, said runners being used for sliding along the mining raise and being mounted onto the central portion in such a manner so as to be transversely movable in position with respect to the same; and runner adjusting means for adjusting the position of each runner with respect to the central portion so as to adjust the width of the base frame according to a given cross-section of the mining raise; a tiltable platform pivotally mounted to the top surface of the base frame between the front and rear ends about a first axis parallel to the transverse axis; platform adjusting means cooperating with the base frame and the tiltable platform for adjusting said tiltable platform with respect to the base frame; and connecting means for anchoring the base frame to a pulley system to provide movement of the sleigh-like device along the mining raise, the front end of the base frame extending below the rear end of the same during movement of the sleigh-shaped device along said mining raise.