# Introduction To The Principle Of Planetary Gear Mechanical Operation Of Belt Conveyor Machinery

- Jul 11, 2019-

With the popularization of China's science and technology technology, the technology of automatic food belt conveyor machinery has attracted more and more attention from major food industry enterprises. The planetary gears in the food belt conveying machinery and equipment parts have more and more demand in the market due to the characteristics of high precision, small volume and stable operation, and the growth rate is also high.

As one of the epicyclic gear trains, the planetary gear has a degree of freedom. When the gear train of the planetary gear is in operation, it can form the gear train gear of the planetary gear, and the geometrical axis position of at least one gear is not fixed. Planetary motion that can occur as a result of rotation about the geometric axes of the other gears.

The principle of transmission of the planetary gear is that the external torque from the power turret is transmitted to the planetary carrier through the clutch and drives the common planetary gear to revolve with the planetary gear. The internal gear is fixed so that the common planetary gear meshing with the internal gear generates an rotation that is opposite to the revolution direction. The rotation of the common planetary gear drives the sun gear that meshes with it. The sun gear drives the output shaft to rotate, thereby achieving shifting and torque output. At this time, the steering of the output shaft is opposite to the steering of the input shaft. Regardless of the inertial force of each rotating member, when a suitable angular velocity is added to the entire planetary gear train to become a conversion mechanism, the relative angular velocity between the gears in the train and the interaction between the gear teeth The force does not change and the coefficient of friction does not change. Therefore, it can be approximated that the friction loss power of the planetary gear train and its conversion mechanism are equal, and the friction loss power of the planetary gear train is proportional to the value of the meshing power.

The number of center teeth and the number of planet wheels are two basic parameters that significantly affect the dynamic characteristics and need to be carefully selected. When selecting these two parameters, various combinations of parameters should be considered, and the best selection of planetary transmissions should be designed according to certain principles. From the point of view of the mechanical efficiency of the food belt conveyor, the efficiency of the negative mechanism is generally higher than that of the positive mechanism, whether it is a speed increase drive or a reduction drive. The positive sign mechanism is generally used in applications where the transmission ratio is large and there is no high requirement for efficiency. The application of this mechanism in the power tool holder inherits the advantages of small size, light weight, large transmission ratio range, high efficiency and stable operation of the planetary transmission, which can better meet the production and transportation requirements of various food production enterprises.