本文關鍵詞： 滑移轉向裝載機 液壓系統(tǒng) 熱平衡 仿真 實驗 改進　出處：《吉林大學》2012年碩士論文　論文類型：學位論文

【摘要】：滑移裝載機是一種多功能的工程機械，有著良好的工作性能和機動性能。雖然目前滑移裝載機在國內的用戶還很少，但是它的優(yōu)勢會令越來越多的人接受它。滑移裝載機的生產廠家也越來越多，競爭將會更加激烈。各生產廠家都在設法提高整機性能，來應對市場的挑戰(zhàn)。 一直以來，油溫過高都是工程機械行業(yè)研究的重要課題�；蒲b載機的一體化結構使得這個問題更加突出。本文以某款滑移裝載機為例，通過理論分析找到油溫較高的原因，再進行試驗加以驗證，并提出改進方法，最終使得整機的熱平衡性能有了明顯的提高，具體過程如下： 第1章：本文對滑移裝載機做了簡要概述，介紹了滑移的優(yōu)勢和熱平衡的問題，分析滑移裝載機行走液壓系統(tǒng)和工作液壓系統(tǒng)熱平衡性能的優(yōu)缺點，，介紹了熱平衡的研究現狀。 第2章：本章進行了液壓系統(tǒng)發(fā)熱源的理論分析。油溫升高的原因在于功率損失，而功率損失來源于管路和閥的壓力損失，泵和執(zhí)行元件的效率損失等等。本文經過了初步分析，找到各部分的功率損失對油溫的影響程度，為實驗做好準備。 第3章：本章進行了液壓系統(tǒng)的散熱分析。流體的散熱是導熱，對流，輻射三種方式的綜合過程。在對流和輻射的散熱方式中，流體的運動狀態(tài)對散熱量有著很大的影響，本章綜合考慮了這些影響，對液壓系統(tǒng)的三種散熱形式進行了分析。 第4章：本章在理論分析的基礎上進行了一些實驗，實際測量了各工況下液壓系統(tǒng)各部分的壓力損失，以及各工況下油液的溫升，對理論分析進行驗證。 第5章：本章首先進行了液壓系統(tǒng)發(fā)熱分析和散熱分析，分析了油溫過高的原因，然后根據實驗結果從減少發(fā)熱和增加散熱兩個方面提出改進措施，實驗表明改進措施取得了一定的效果。
[Abstract]:Skid loader is a multi-functional engineering machinery, has a good working performance and maneuverability. Although the skid loader in the domestic users is also very small, but its advantage will make more and more people accept it. The skid loader manufacturers more and more, the competition will be more intense. Manufacturers are trying to improve the performance of the whole machine, to meet the challenges of the market.
Since the high temperature is an important research subject in the engineering machinery industry. The integrated structure of skid loader makes this problem more prominent. Taking a skid loader as an example, analysis of the reasons to find the oil temperature is higher by theory, then tests, and put forward the improvement methods, finally makes the performance of the heat balance has been significantly improved, the specific process is as follows:
The first chapter: This paper gives a brief overview of the skid loader, introduces the advantages of sliding and the problem of heat balance, analyzes the advantages and disadvantages of the heat balance performance of the sliding loader's running hydraulic system and the working hydraulic system, and introduces the research status of the heat balance.
The second chapter analyzes the hydraulic system heat source theory. The temperature is due to power loss and power loss in the pipeline and the valve pressure loss, pump and actuator efficiency loss and so on. After a preliminary analysis, find the power loss of each part of the lost influence on the oil temperature, do in preparation for the experiment.
The third chapter analyzes the hydraulic system of the cooling fluid. The heat is the heat conduction, convection, radiation process in three ways. In the cooling mode of convection and radiation, the motion state of the fluid has great influence on the heat dissipation, this chapter considers these effects of three kinds of form of heat dissipation. The hydraulic system is analyzed.
The fourth chapter: Based on theoretical analysis, some experiments were carried out in this chapter, and the pressure loss of each part of the hydraulic system under different working conditions was measured, and the temperature rise of the oil under different working conditions was verified, which is verified by theoretical analysis.
The fifth chapter: this chapter first analyzes the heating and heat dissipation of the hydraulic system, analyzes the reasons for the high oil temperature, and then according to the experimental results, puts forward the improvement measures from two aspects of reducing the heat and increasing the heat dissipation. The experiment shows that the improvement measures have achieved certain results.

【學位授予單位】：吉林大學
【學位級別】：碩士
【學位授予年份】：2012
【分類號】：TH243

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本文編號：1519755