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Gear which includes: Stone sand making machine and belt conveyor, the following were to introduce these two instruments are stone sand making machine is our popular effect crusher, its working principle is: the material in the hopper into the crusher, the distributor with the material into two departments, a division by sub feeder into the middle the high-speed rotation with the impeller, the impeller is rapidly accelerated, the acceleration of up to numerous occasions the acceleration of gravity, and after that to 60-70 M / s velocity in the impeller three uniformly distributed within the channel of the projectile out.
The present status of the development of belt conveyor belt conveyor technology technologies is extremely fast, which is mainly manifested in 2 elements: on the one particular hand is the expansion with the belt conveyor functional diversification, scope of application, such as high angle belt conveyor, tubular belt conveyor, belt conveyor turning space of different models; on the other hand is the technologies and equipment of belt conveyor itself has accomplished wonderful improvement, in particular the extended distance, massive capacity, high speed and massive belt conveyor has come to be the main direction of improvement, the core technology may be the development and application of evaluation and monitoring conveyor dynamic in the progress, the belt conveyor operating performance and reliability.
At present, the principle technical indicators inside the belt conveyor applied in underground coal mine has achieved are shown in Table 1, the key technologies and equipment has the following traits: substantial scale equipment. The main technical parameters and gear of large-scale development, in an effort to satisfy the need of high yield and higher efficiency of an annual output of 300~500 million T or far more intensive production. The application of dynamic evaluation of higher and new technologies and mechatronics technologies, computer system control, the high energy soft starting and automatic tensioning technologies, improve the functionality of machine state monitoring and manage, and greatly lessen the belt tension the drive belt, gear operation and superior performance, high transport efficiency. Adopts the multi motor driving and driving and power balance, modifications to the operation of conveyor, the conveyor run length in theory has been restricted, and guarantee the reliability of the versatility, interchangeability and unit driven by the conveying gear. The new hub, higher reliability elements technologies. Such as like CST, improve the power generation manage device, driving device and long-life high-speed roller, roller device, self cleaning kind belt storage device, quick and effective self advancing tail and so on..