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The Research of Static and Dynamiccharacteristics of Double Buffering Load Sensor Large-flow Amplification Hydraulic Steering System

Author: BaoXiaoMin
Tutor: XiongGuoLiangï¼›WangXiaoMing
School: East China Jiaotong University
Course: Mechanical Manufacturing and Automation
Keywords: The flow amplification the bidirectional buffer load sensing hydraulic steering gear Simulation Analysis MSC.Easy5 Static and dynamic characteristics Structural optimization
CLC: TH137
Type: Master's thesis
Year: 2011
Downloads: 48
Quote: 0
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Hydraulic steering gear as an output power of larger full-power steering, widely used in large-scale construction machinery. Rely on increasing the internal flow area to increase the displacement of the steering gear, the volume is too large, inconvenience installation, with flow amplification function coaxial flow amplification the diverter is still kept turned to shock and vibration, while the flow rate is not high enough magnification. The flow amplification the bidirectional buffer load sensing hydraulic steering gear a novel hydraulic steering gear is designed to solve the above problem. By the composition of the steering gear steering system has the advantages of large displacement, high power, steering stability. In order to further optimize the performance of the static and dynamic simulation analysis and study of the static and dynamic performance of the steering system, the proposed the steering improved design measures and structural alternatives. The static and dynamic characteristics of the hydraulic steering system to study more economical, effective and practical method is to use computer software to simulate and analyze. The simulation analysis of the static and dynamic characteristics of the hydraulic steering system can effectively shorten the design cycle, to avoid duplication of tests and processing to reduce costs. At the design stage at the same time will be able to timely and accurately predict the static and dynamic performance of the steering system, save for the steering system debug time can also be more in-depth understanding of the performance of the steering system designed by simulation analysis. This paper first analysis the flow amplification the bidirectional buffer load sensing fully hydraulic steering system works and system components. The use of continuous flow equation and the force balance equation static and dynamic mathematical model of the hydraulic steering system and static characteristics of the system. On the basis of the dynamic mathematical model of the hydraulic steering system, the system works, the in hydraulic Professional features MSC.Easy5 simulation software, to establish the various components of the simulation model, and based on the relationship of each part of the entire steering The simulation model of the system. The step signal input steering simulation analysis of the bidirectional buffer load sensing flow amplifying the dynamic characteristics of the hydraulic steering system. Structural optimization program steering in accordance with the conclusions of the simulation analysis, simulation and structural optimization prototype measured experimental performance parameters and structure optimized performance parameters analyzed. The results show that the steering system allows the diverter output flow is enlarged 4 times and having a bi-directional buffer and steering stability performance. These simulation analysis conclusions for further product upgrade and optimize the design has a very important guiding significance and reference value.

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