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 WH78 |
| WR82 |
| WHX124 |
| WHX132 |
| WHX150 |
| WHX155 |
| WHX157 |
| WHX159 |
| SS-2184 |
| SS-800 |
| 81X,81XH |
| M315 |
| M450 |
| M630 |
| M900 |
| 9835M |
| 110M |
| 111M |
| 150M |
| 5907D |
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| BACK |
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| The development trend of the Overhead conveyor |
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1 belt conveyor dynamic analysis and monitoring technology, high-power belt conveyor are the key technologies of the dynamic design and monitoring, it is restricted the development of large belt conveyor core technology. At present with rigid theory to analyze the research of belt conveyor and formulate the calculation and design specifications, design of conveyor belt use high security system (usually take about 10), n = with actual situation. Actually, long distance belt is sticky elastic belt conveyor belt drive device for the power system, the dynamic response is a very complicated process, and can't simply use rigid body mechanics calculation and explained. Has developed a belt conveyor design method and dynamic application software, in large conveyor belt tension on the dynamic analysis and the conveyor chain monitoring, reduce the security system, conveyor prolong the conveyor, ensure the reliability of operation, thus make large belt conveyor design at the highest level (belt safety coefficient n = 5 ~ 6), and the cost of equipment, especially the conveyor belt conveyor is greatly reduced costs.
2 reliable controllable soft start-up technology and power equalization techniques long-distance large-capacity belt conveyor because power and long distance and multi-motor drives, must adopt soft start-up mode to reduce tension, especially the belt brake motor drive. In order to reduce the impact of soft start, when should slow start time, To control conveyor starting acceleration 0.3 ~ 0.1 m/s2, solve load and drive belt conveyor belt speed synchronization problem and the surge wave phenomenon, reduce the impact of the components. Due to manufacturing error and motor characteristics of each driver error, power will appear unbalanced, once had a motor power will cause burning motor, so, the balance of power between the motor shall be controlled, and improve precision. China has wide application of velocity modulated hydraulic coupler to realize the balance of chain sprocket, with the long distance belt conveyor starting with power balance and synchronized. But its regulating accuracy and reliability and abroad has a certain disparity. In addition, the long-distance high-power belt conveyor belt speed but requires a a outside, still need to take a test of the belt speed, velocity modulated hydraulic coupler though realizing soft start-up and power balance, but also need for long-distance stepless speed hydraulic device. When a single power > 500 kW, controllable CST showed advantages of soft start-up. Due to the planet is controllable soft starter gear reducer gear in the wet clutch friction with combination (i.e. viscous transmission). Through the proportional valve and control system to realize the balance of power, soft start-up and its accuracy reached 98%. But the price is expensive, need localization.
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