Overview of the role of the belt conveyor brake device

The belt conveyor brake system includes mechanical s) brake pad brake, electric brake, hydraulic brake and so on. The chain loading conveyor is a transmission device that uses standard chain plates as the bearing surface and is driven by a motor reducer. The chain loading conveyor is composed of power unit, drive shaft, roller, tensioning device, sprocket, chain, bearing, lubricant, chain plate, etc. The belt conveyor has universal mobile type, underground optional type, and fixed type for open-pit mines. , Special structure, removable conveyor, loader dedicated reprinting function, large inclination conveyor, etc. Generally speaking, the short-distance in-plant conveyor can complete horizontal, upward or downward transportation, and the reversible pattern belt conveyor can be used Two-way conveying material logistics conveyor belts belts with traction components generally include: traction components, load-bearing components, driving devices, tensioning devices, redirecting devices and supports. The traction parts are used to transmit traction, which can be conveyor belts, traction chains or steel wire ropes; the load-bearing components are used to carry materials, including hoppers, brackets or spreaders, etc.; the driving device powers the conveyor, usually by electric motors, reducers and Brake (stop) and other components; tensioning devices generally have two types of screw type and heavy hammer type, which can maintain a certain tension and sag of the traction member to ensure the normal operation of the conveyor belt; the support member is used to support the traction member or load As components, rollers, rollers, etc. can be used. The effective combination of man and machine in the assembly line fully reflects the flexibility of the equipment. It organically combines the conveying system, the accompanying fixture, the online special machine, and the testing equipment to meet the assembly requirements of a variety of products. The electrical brake performance is relatively stable, but the brake system cannot work when the power is suddenly cut off. The hydraulic brake system is not only complicated, but the braking torque drops rapidly at low speeds, and mechanical brake pads are still required for dry friction braking. For mechanical brakes, because it will produce sparks and combustion, it will also cause great harm to the production safety of material transportation, so the use of hydraulic brakes is becoming more and more urgent. In the braking process of the belt conveyor, the braking device must not only overcome the effect of the load torque, but also continuously absorb the heat generated during the braking process. Mesh belt conveyor transportation machinery can not only complete the transportation of bulk materials, but also transport finished materials, but depending on the place of use, working environment, and the type of materials to be conveyed, there will be big differences in its design and application. If the braking deceleration is small, the braking torque of the braking device may be small, but at this time, the braking force of the braking device is required to be large, and the heat capacity of the braking device is also large. Therefore, in the field use, due to improper setting of the braking torque, the braking time is long, a large amount of heat is generated, and the temperature rise of the braking device is too high. However, when the braking deceleration is too large, although the calorific value is small, the high-power belt conveyor should adopt a controllable moving device, requiring the braking device to have a large heat capacity and good heat dissipation conditions. In addition, for the braking technology of high-power, long-distance belt conveyors, direct mechanical locks (style: dial type) may cause problems such as rolling, slipping, flying, and sparks. Therefore, in order to ensure the needs of normal and emergency parking and avoid accidents, it is also required that the high-power long-distance belt loading conveyor adopt a controllable moving device. The belt conveyor brake control system mainly includes a control unit, a brake unit, a belt conveyor drive system and a signal sensor feedback unit. When the control unit obtains the main control signal, the hydraulic brake is required to achieve braking, that is, the braking torque is output to the belt conveyor drive system, and then the control unit sends a certain current and voltage signal. Then the acceleration signal and speed signal are fed back to the control unit by the signal sensing unit, and the control unit adjusts the torque according to a certain index, so that the braking of the belt conveyor transmission system meets the requirements of the working conditions.
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