Dissertation > Excellent graduate degree dissertation topics show

Study and Design on the Hydraulic System of Asphalt Pavement Milling Machine for Circular Pothole

Author: LiuYang
Tutor: SongYongGang
School: Chang'an University
Course: Mechanical and Electronic Engineering
Keywords: milling machine hydraulic system constant power travel system efficiency
CLC: U418.32
Type: Master's thesis
Year: 2013
Downloads: 9
Quote: 0
Read: Download Dissertation


Asphalt pavement milling machine for circular pothole is a new asphalt roadmaintenance machinery, which can directly mill the regular shape, perpendicular to the edgeof the circular pits, meanwhile it has simple structure and high efficiency, and easy tooperate.However, there is no similar prototype we can learn from all over the world. Most ofthe major working equipments of the new machine are driven by the hydrauliccomponents.Therefore, the hydraulic system is one of the important systems of the machine.In this paper, the main task is to study and design a hydraulic system, which can meet thefunctional and performance requirements, to achieve the main work, which also implementthe concept of efficient and energy-saving design.Firstly, this paper analyzes the functional and performance requirements of the millingmachine, and the operating device for the hydraulic system, and defines the ideas of thisdesign.Secondly, access to learning a lot of literatures and information on hydraulic andelectro-hydraulic control, starting from the hydraulic support system designed to meet therequirements of each system, after the synthesis and optimization, this paper completes thedesign of the whole hydraulic system. This paper calculates and selects the appropriate typeand model of important hydraulic elements such as hydraulic pump and motor.Again, the paper deeply studies two key issues of the hydraulic system of the circularpits milling machine, and in order to make full use of engine energy, it takes the constantpower control of the milling device to ensure the efficient operation of the machine. In orderto meet the high-low speed and accurate positioning requirements of chassis walking system,the paper designs a two-way volume control variables closed circuit with a better energysaving.Lastly, in view of the importance of the real conditions of the limitations as well asmobile machinery to walk, so the paper chooses the hydrostatic system to do the SimulationModeling and Analysis, and also probes effects of internal and external parameters of systemon the speed. Then the paper takes advantage of AMESim to test and verify. According to theactual situation, the paper proposes some ways to improve the response of speed. By design, calculation, simulation and modify, the complete hydraulic system can meetthe functional requirements of the circular pit milling machine, and has practical, efficient,energy-saving performance characteristics.

Related Dissertations

  1. Research on High Efficiency Interior Permanent Magnet Synchronous Motor,TM341
  2. A Study about the Stock Index Future’s Influence on the Stock Market,F224
  3. Yunnan Province, human capital, the network structure of critical efficiency factor,F249.27
  4. The Design and Performance Simulation of External Valve Small Displacement Pump,TE933.3
  5. Analyiss on Dicharge Environment and the Effect of of Dust Electrostatic Coagualation,X701.2
  6. Study on the Exergy Analysis of Photosynthetic Biological Continuous Hydrogen Production System,TQ116.2
  7. Investigation of Fabrication, Characterization and Property of Fuctional Titanium Dioxide Nanoporous Materials,TB383.1
  8. Effect of Nitrogenapplication Patterns on Variation of Soil Nitrate-N and Grain Yield of Wheat and Maize,S512.11
  9. The Analysis of the Social Institution of Realization of Individual Value,B038
  10. High Efficiency Management Strategy of Mathematics Class Teaching of Lower Primary School Grades,G623.5
  11. The use of mathematical methods in language teaching,G633.3
  12. Research on Management Efficiency and Mechanism of Soil-Water Erosion in Changting,S157
  13. Radiation Transfer Characteristics and Radiation Use Efficiency of Rice,S511
  14. Studies on Agrobacterium-midiated Genetic Transformation in Brassica Campestris Subsp. Chinensis Var. Parachinensis,S634.5
  15. Studies on the Preparation and Nutrient Release Characteristics of Low Molecular Weight Polylactic Acid Coated Urea,S145.6
  16. Characteristics of Nitrogen Release and Effect on Environment of Different Kinds of Coated Urea,TQ440.1
  17. Studies on the Best Nutrient Management Practice for Rice-Wheat Cropping System in Different Fertlity Soil in Tai-Lake Basin,S158.5
  18. Treatment of Rural Domestic Wastewater by Aerated Constructed Wetland,X703
  19. Effects of Compound Fertilizer on Water-fertilizer Use and Carbon Sequestration of Winter Wheat,S512.11
  20. Universities RD input-output hysteresis and evaluation of the relative efficiency,G647
  21. Weifang Vocational College Teacher Performance Appraisal System Optimization,G717.2

CLC: > Transportation > Road transport > Road works > Road maintenance and repairs > Road maintenance machinery and equipment > Motor maintenance machinery and equipment
© 2012 www.DissertationTopic.Net  Mobile