本文關(guān)鍵詞： 滑移轉(zhuǎn)向裝載機(jī) 液壓系統(tǒng) 熱平衡 仿真 實(shí)驗(yàn) 改進(jìn)　出處：《吉林大學(xué)》2012年碩士論文　論文類(lèi)型：學(xué)位論文

【摘要】：滑移裝載機(jī)是一種多功能的工程機(jī)械，有著良好的工作性能和機(jī)動(dòng)性能。雖然目前滑移裝載機(jī)在國(guó)內(nèi)的用戶還很少，但是它的優(yōu)勢(shì)會(huì)令越來(lái)越多的人接受它。滑移裝載機(jī)的生產(chǎn)廠家也越來(lái)越多，競(jìng)爭(zhēng)將會(huì)更加激烈。各生產(chǎn)廠家都在設(shè)法提高整機(jī)性能，來(lái)應(yīng)對(duì)市場(chǎng)的挑戰(zhàn)。 一直以來(lái)，油溫過(guò)高都是工程機(jī)械行業(yè)研究的重要課題�；蒲b載機(jī)的一體化結(jié)構(gòu)使得這個(gè)問(wèn)題更加突出。本文以某款滑移裝載機(jī)為例，通過(guò)理論分析找到油溫較高的原因，再進(jìn)行試驗(yàn)加以驗(yàn)證，并提出改進(jìn)方法，最終使得整機(jī)的熱平衡性能有了明顯的提高，具體過(guò)程如下： 第1章：本文對(duì)滑移裝載機(jī)做了簡(jiǎn)要概述，介紹了滑移的優(yōu)勢(shì)和熱平衡的問(wèn)題，分析滑移裝載機(jī)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(diǎn)，，介紹了熱平衡的研究現(xiàn)狀。 第2章：本章進(jìn)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(lái)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(jīng)過(guò)了初步分析，找到各部分的功率損失對(duì)油溫的影響程度，為實(shí)驗(yàn)做好準(zhǔn)備。 第3章：本章進(jìn)行了液壓系統(tǒng)的散熱分析。流體的散熱是導(dǎo)熱，對(duì)流，輻射三種方式的綜合過(guò)程。在對(duì)流和輻射的散熱方式中，流體的運(yùn)動(dòng)狀態(tài)對(duì)散熱量有著很大的影響，本章綜合考慮了這些影響，對(duì)液壓系統(tǒng)的三種散熱形式進(jìn)行了分析。 第4章：本章在理論分析的基礎(chǔ)上進(jìn)行了一些實(shí)驗(yàn)，實(shí)際測(cè)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(duì)理論分析進(jìn)行驗(yàn)證。 第5章：本章首先進(jìn)行了液壓系統(tǒng)發(fā)熱分析和散熱分析，分析了油溫過(guò)高的原因，然后根據(jù)實(shí)驗(yàn)結(jié)果從減少發(fā)熱和增加散熱兩個(gè)方面提出改進(jìn)措施，實(shí)驗(yàn)表明改進(jìn)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(xué)位授予單位】：吉林大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2012
【分類(lèi)號(hào)】：TH243

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