Driving device for machine head of scraper conveyor for coal mine

Abstract

The invention relates to a driving device for a machine head of a scraper conveyor for a coal mine. The driving device comprises a chain wheel shaft, wherein a chain wheel is arranged at the middle part of the chain wheel shaft by fit through a spline, transmission gears are sheathed at the two ends of the chain wheel shaft, a bearing and a bearing seat are arranged on the chain wheel shaft on the two sides of the chain wheel, a shaft shoulder sleeve is arranged between an inner ring of the bearing and the spline of the chain wheel shaft, a liner bushing is arranged between an outer ring of the bearing and the bearing seat, a floating sealing device I is arranged between the liner bushing and the chain wheel, and a lubricating cavity is formed among the liner bushing, the chain wheel and the shaft shoulder sleeve; and a gland bush is mounted on the back surface of each transmission gear, a pressing sleeve is arranged in an inner cavity at the outer end of the bearing seat, and a floating sealing device II is arranged between the pressing sleeve and the gland bush. The driving device disclosed by the invention utilizes the gland bush, the liner bushing, the pressing sleeves and the shaft shoulder sleeve to press the floating sealing device I between the liner bushing and the chain wheel and the floating sealing device II between the pressing sleeve and the gland bush for sealing, thereby ensuring a fixed gap between the floating sealing device I and the floating sealing device II and prolonging the service life of the bearing and the chain wheel.

Description

technical field [0001] The invention relates to a coal mine conveying equipment, in particular to a coal mine scraper conveyor head driving device. Background technique [0002] The driving sprocket is the key transmission element of the scraper conveyor. Through the engagement of the driving sprocket and the chain ring, the rotational torque of the driving motor is converted into a linear traction force and transmitted to the scraper chain. The scraper chain moves in a closed circle around the driving sprocket, and transports the raw coal on the upper chain of the scraper conveyor from the tail to the head, realizing the basic function of the scraper conveyor. Due to the positioning structure of the drive sprocket in the past, the oil injection method, etc. have affected the unreliable positioning of the drive sprocket, the sealing of the floating seal, oil leakage in the middle of the refueling pipeline, and inconvenient replacement, which reduces the service life and rep...

AI Technical Summary

Problems solved by technology

Due to the positioning structure of the drive sprocket in the past, the oil injection method, etc. have affected the unreliable positioning of the drive sprocket, the sealing of the floating seal, oil leakage in the middle of the refueling pipeline, and inconvenient replacement, which reduces the service life and replacement of the drive sprocket. Period, the user strongly requests to improve the life of the sprocket and avoid replacing the sprocket underground

But so far, the service life of domestic sprockets cannot meet the needs of my country's modern coal mining face mining, and the driving sprocket has become an important factor hindering the further development of domestic heavy and super heavy scraper conveyors

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