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Research on Hoisting Hydraulic System Performance Analysis and Experimental for Crane Truck

Author: ZhaoYong
Tutor: LiuZuoZuo
School: Jilin University
Course: Mechanical Engineering
Keywords: Crane Lifting system Simulation Analysis Balancing valve System Optimization
CLC: TH213.6
Type: Master's thesis
Year: 2011
Downloads: 253
Quote: 1
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Abstract


The cranes are an important part of construction machinery, have a wide range of applications in the field of urban construction, water conservancy, mine and defense engineering. However, the current for a liter system design optimization, often still stuck relying on experience and prototype testing method, not only the existence of the shortcomings of the design cycle is long, inaccurate design and belongings wasting also have to face the problem. In addition to the analysis of static characteristics in the crane hydraulic systems design process, but also consider the dynamic characteristics to meet the system demand sky-liter system as the core system of the crane, the dynamic performance of a direct impact on the performance of the crane machine Therefore, the study of the hoisting system is essential. Correct simulation model, the use of simulation tools to get the relevant parameters of the various hydraulic components in the system dynamic response characteristics of the system, on the basis of analysis of the simulation curve by changing the the hydraulic component parameters to optimize system dynamic response characteristics of the purposes. First, to accurately establish a digital system virtual prototyping, select a suitable optimization method to amend various size parameters to the dynamic characteristics of the overall optimal. The subject is based on the above ideas, to crane hoisting system as the research object, relying on AMESim software platform, simulation analysis and optimization of the design. The core idea of ??this paper is to propose computer simulation in the design is complete, the system first, a preliminary understanding of the various characteristics of the hydraulic system run, and the design of the unreasonableness of the optimized design, thereby reducing design blindness, to ensure that the trial run security and stability, and to shorten the design cycle, improve economic efficiency. Based on this, this paper first discusses the crane lifting system secondary lifting phenomenon and the basic way to solve quadratic lifting phenomenon. Since then introduced several typical type of hoisting mechanism and a common lifting hydraulic schematics, schematic diagram of the hydraulic system based on this research, according to system performance demand, calculated by matching parameters related technologies. Then power bond graph-based dynamic model of hydraulic cranes, and lifting loop mathematical model derived hoisting mechanism. Finally, relying on the the AMESim software platform as well as the experimental curve, establish and fix up liters of hydraulic system simulation model to analyze the main factors to affect the dynamic characteristics of the system, and further optimize the lifting system is an important component balancing valve, and optimized simulation model validation feasibility.

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CLC: > Industrial Technology > Machinery and Instrument Industry > Lifting machinery and transport machinery > Lifting machinery > Mobile crane > Wheel
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