An overhead railway and trolley for transporting miners out of a mine. The railway is formed by connected rails that are mounted to a roof of a mine. The trolley is mounted to a bottom flange of the rails and includes wheel assemblies having at least two wheels mounted side-by-side, and each is configured to engage and roll along a top surface of the bottom flange. The trolley has a clicker that is configured to engage protrusions extending away from the bottom flange. The clicker permits the trolley to travel out of the mine but prevents it from traveling into the mine. The trolley also includes a pair of handles that are configured to be gripped by a miner standing on a floor of the mine as he travels from the beginning of the railway to the ending (i.e., the egress direction).

An overhead railway and trolley for transporting miners out of a mine. The railway is formed by connected rails that are mounted to a roof of a mine. The trolley is mounted to a bottom flange of the rails and includes wheel assemblies having at least two wheels mounted side-by-side, and each is configured to engage and roll along a top surface of the bottom flange. The trolley has a clicker that is configured to engage protrusions extending away from the bottom flange. The clicker permits the trolley to travel out of the mine but prevents it from traveling into the mine. The trolley also includes a pair of handles that are configured to be gripped by a miner standing on a floor of the mine as he travels from the beginning of the railway to the ending (i.e., the egress direction).

The present invention belongs to the technical field of coal transportation on fully mechanized mining faces, and particularly relates to a double-end chain tension force control system for a cross side-dumping type flight conveyor and a control method therefor. The double-end chain tension force control system includes a tail tensioning system, connected to a reversed loader at a tail of the flight conveyor; a head tensioning system, connected to a head of the flight conveyor, where the tail tensioning system and the head tensioning system together achieve double-end coordinated control of a chain transmission system on the flight conveyor to adjust a tension force; and a control system, collecting information about the tail tensioning system and the head tensioning system and controlling same. According to the present invention, a telescopic head mechanism for the cross side-dumping type flight conveyor is designed, and the double-end coordinated control of the chain transmission system can be achieved to rapidly adjust the tension force.

The present invention belongs to the technical field of coal transportation on fully mechanized mining faces, and particularly relates to a double-end chain tension force control system for a cross side-dumping type flight conveyor and a control method therefor. The double-end chain tension force control system includes a tail tensioning system, connected to a reversed loader at a tail of the flight conveyor; a head tensioning system, connected to a head of the flight conveyor, where the tail tensioning system and the head tensioning system together achieve double-end coordinated control of a chain transmission system on the flight conveyor to adjust a tension force; and a control system, collecting information about the tail tensioning system and the head tensioning system and controlling same. According to the present invention, a telescopic head mechanism for the cross side-dumping type flight conveyor is designed, and the double-end coordinated control of the chain transmission system can be achieved to rapidly adjust the tension force.