Optimized Design And Three-dimensional Model Foundation Of Solar Heliostat Driving Device

Solar energy is a kind of energy with the potential of development, but the current solar utilization is not efficient. The theories analysis expresses that adopting the solar tracking can increase 37.7% the rate of the energy accepts. S olar h eliostat driving device is a performance element during tracking sun, so a lot of domestic and international scholars investigative the device. Firstly, on the basis of the principle of domestic and international solar trackers, the result expresses that these device have low accuracy, high manufacturing cost and the weakness of low rigidity. So, this paper presents a new solar heliostat driving device, which the device base on oblique plane primary enveloping worm drive.After shaping theory and meshing theory of oblique plane primary enveloping worm drive is carefully studied, the relation of the trim of axial position of worm wheel and tooth side clearance of oblique plane primary enveloping worm drive is deduced, plane worm with variable tooth thickness may be used as primary drive mechanism in traction machine instead of cylindrical worm, so accuracy is improved.Through analyzing the impact of many major parameters on geometry characteristics and meshing performances of oblique plane primary enveloping worm, it is concluded that the effect rules of every parameters are different after the effect rules of some primary parameters to geometry characteristics and meshing performances are discussed, so an overall optimization must be given for proper geometry characteristics and meshing performances. In order to reduce manufacturing cost, least volume and optimal characteristics is acted as objective function, building mathematical model and optimizing the design with multi objective optimal methods, then solving optimization outcome with MATLAB. The example testifies that it's practicable, correct and effective to apply the optimal methods.In the system of Pro/ENGINEER, the parts of solar heliostat driving device are built as three-dimensional models, and solar heliostat driving device is designed assembly and tested on interference, t his modeling can provide a convenient study method for optimized design of solar heliostat driving device, at the same time, provide better three-dimensional model for structural analysis.