China University of Mining and Technology (CUMT)

China Mining & Civil New Material Science and Technology Ltd.

Ningkang Meng

Rui Wang

Junwu Xia

Jianbiao Bai

Xiangyu Wang

Shuai Yan

Zaizhuang Fan

Ying Xu

Gongyuan Wang

An apparatus for protecting a roof tray when a gob-side entry retaining end support migrates is provided. The apparatus is mounted at a top end position of a hydraulic support, and includes a movable bearing mechanism, an automatic expansion/contraction connecting groove mechanism, and an active reset mechanism. The movable bearing mechanism includes two parallel belts and a plurality of rollers supporting the belts, and the rollers are mounted on and supported by a bearing mechanism. The automatic expansion/contraction connecting groove mechanism is two concave base plates fixed between the two belts, and the two concave base plates are spaced by a distance. The active reset mechanism includes two telescopic rods and reset springs sleeved on the telescopic rods, and the telescopic rod is connected to an end portion of the reset spring to form a synchronous mechanism.

Apparatus for protecting roof tray when gob-side entry retaining end support migrates

Growing community of inventors

Xuzhou, China

Ningkang Meng