Power driving device of belt conveyor for mining

Abstract

The invention discloses a power driving device for a belt conveyor for mining. The device comprises a plurality of rows of V-shaped carrier roller assemblies arranged below a belt, wherein each carrier roller assembly comprises carrier rollers (1) which are mounted at two sides of a rack through a carrier roller support (9), a pair of rollers (7), and roller driving assemblies; the rollers (7) and the roller driving assemblies are arranged between the two carrier rollers; each roller driving assembly comprises a motor (3), a speed reducer (5) and a mounting rack (8), wherein the motor is mounted on the mounting rack through a supporting seat (2); the motors and the speed reducers are connected through couplings (4), so are the speed reducers and roller shafts of the rollers; two sides of the roller shafts are mounted on the mounting racks through bearing blocks (6); the outer surfaces of the rollers are manufactured from antiskid materials which meet the safety standard for coal mine. According to the device, the belt driving power is dispersed, thus the force applied to the belt is uniform, and the belt conveyor can run fast and be braked smoothly; the mechanical energy generated in braking is converted into electricity energy, so that the energy utilization rate can be improved.

Description

technical field [0001] The invention relates to a belt conveying equipment, in particular to a power driving device of a mine belt conveying machine, which belongs to the technical field of belt conveying equipment. Background technique [0002] Full-efficiency coal mine main transportation equipment is an important part of automated and intelligent mines, and the belt conveyor is the key equipment of the coal mine main transportation system. During the working process of the belt conveyor, the driving force is mostly transmitted through the A high-power drive motor is arranged at the head position of the belt conveyor, and the driving force is transmitted to the head roller through the reduction box, and the transmission is realized through static friction without relative motion between the head roller and the belt. [0003] This driving method has the following defects: 1. Since the start-up process of the belt conveyor is an acceleration process, in addition to the resis...

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Problems solved by technology

[0003] This driving method has the following defects: 1. Since the start-up process of the belt conveyor is an acceleration process, in addition to the resistance generated by the load and the belt conveyor's own weight, it is also necessary to overcome the force generated by the acceleration. Therefore, during the start-up process, The belt bears a large tension; and the belt conveyor is often affected by impact loads during operation, and the head motor needs to increase the output torque according to the load, which also leads to the tension of the belt conveyor head belt. increase; therefore, the existing driving method is likely to cause tearing, deviation, or even belt breakage of the belt at the head part; 2. During the braking process of the belt conveyor, the kinetic energy when it is used horizontally and when it is used on a slope The kinetic energy and potential energy of the belt conveyor are consumed by the friction between the belt, the roller and the idler roller, resulting in energy waste; 3. Especially for the belt conveyor, after the belt conveyor is braked, the belt needs to slide for a long distance due to inertia It takes too long to stop, and the braking time is too long, and it is not stable and reliable

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