Gas extraction device for upper corner of coal mining working face of coal mine

• Main Authors: SUN YINLIANG, WANG ZHEN
• Format: Patent
• Language: Chinese; English
• Published: 22.03.2022
• Subjects: BLASTING; EARTH DRILLING; ENGINEERING ELEMENTS AND UNITS; FIXED CONSTRUCTIONS; FRAMES, CASINGS, OR BEDS OF ENGINES OR OTHER MACHINES ORAPPARATUS NOT SPECIFIC TO AN ENGINE, MACHINE, OR APPARATUSPROVIDED FOR ELSEWHERE; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; MINING; SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, ORDRAINING IN OR OF MINES OR TUNNELS; STANDS OR SUPPORTS; THERMAL INSULATION IN GENERAL; WEAPONS

The utility model discloses an upper corner gas extraction device for a coal mining working face of a coal mine. The upper corner gas extraction device comprises a device main body, the motor drives the speed reducer to rotate, the speed reducer drives the first rotating shaft to rotate, the first rotating shaft drives the two-way screw rod to rotate, the two-way screw rod rotates so that the first sliding block and the second sliding block can get close to each other, and the first swing rod and the second swing rod can be driven to move along with mutual movement of the first sliding block and the second sliding block; when the wheels make contact with the ground and jack up an electric telescopic rod to a certain height, the electric telescopic rod can be moved through the wheels, when the device needs to be positioned at a designated place, a motor is started to make the device rotate in the reverse direction, and therefore the device can be located at the designated place. The movable plate can ascend in