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The Research of Manual Twisting Device

Author: GuanZhu
Tutor: LiGuiXian
School: Harbin Institute of Technology
Course: Mechanical Design and Theory
Keywords: Twisting device Planetary gear train Genetic algorithms Finite Element Analysis Collision
CLC: TH132
Type: Master's thesis
Year: 2007
Downloads: 71
Quote: 0
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Abstract


The issue stems from an enterprise in Jiangsu, Inorder to measure the relevant data of mechanical equipment working on the field where is no source, we need to design such a transmission device which can achieve to output the torque to drive mechanical equipment rotation through artificial manually input .And then we can complete survey work.In this paper, there is two different work locations, respectively, two different solutions is suggested: decelerating velocity and growing force, and, growing velocity and collision. Adoption of the program design and calculation, the optimal design and computer simulation, we design a manual torque amplification function for the twisting device.According to product requirements for manual twisting device, we choose a right type and confirm planetary gear drive (2K-H category NGW type) system as a transmission type of the device which is small size, light weight, high transmission efficiency. We work out the torque、the transmission ratio、the efficiency and offer the theoretical foundation of the mechanism designing and the simulation.In this paper, the flywheel will be applied to solution design. Flywheel was adopted to collision with high speed, so it can drive equipment to rotate in order to calibration, and that can overcome the staff had to be affordable counterforce. We completed the flywheel and the ejection device design, a simple study and simulation for the collision.Because of the big output torque, small size, the designing of structure parameters is most critical. In this paper, we combined the basic genetic algorithm and random direction method and proposed genetic algorithm method which is improved to the structural design optimization for twisting device. It solves problem which is in the basic genetic algorithm. For example, lower rate in searching late stage.And it improves the precision of convergence. It offers a method of optimization method in mechanical optimization.Structural design is completed, then Pro/E is used to the establishment of virtual prototyping for the twisting device, interference detection and motion simulation. According to the simulation results for the virtual prototype, we adjust it and get a better simulation results and verify it with the oretical calculations.Lastly, the main components are analyzed by the ANSYS in order to satisfy with the large torque of the twisting device. Because the gears have larger torque. The new contact element is used in the gear trains’nonlinearity analysis in order to analyze the pressure in the gear meshing process and static analysis. The result is compared with the theory. When all the designing are finished, this paper creates all the 2D engineering drawings. The design and simulation of the manual twisting device are completed.

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CLC: > Industrial Technology > Machinery and Instrument Industry > Mechanical parts and gear > The transmission mechanism
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