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摘 要
本文介紹了車載輪椅升降機國內形勢和發(fā)展趨勢，從系統(tǒng)設計，系統(tǒng)的分析和設計的主線出發(fā)，突出整體設計的機械系統(tǒng)動力學探索體系統(tǒng)動力學建模技術集成分析系統(tǒng)控制和其他問題明確的選擇和確定具體的執(zhí)行機構，所述數(shù)學模型，通過產(chǎn)生機構尺寸控制和調整的模型參數(shù)的模型表示出來的特性的基礎上，在此項目中的焦點一系列經(jīng)過反復探索，展示了最終建立有針對性的方法，使用相結合的理論分析比喻是更方便的解決方案處理車輛液壓升降調節(jié)器設計問題。
本文介紹了平面連桿機構介紹的方法求解最優(yōu)設計方法和工程設計問題，基于對車輛的車載輪椅升降機降驅動力分析的一般過程，一般設計時要考慮清楚在體內的主要因素模擬的數(shù)學模型，提供了可靠的基礎，該模型通過建立機構有權確定目標函數(shù)，以確定運行的計算機優(yōu)化程序，用于車輛裝卸過程中的制約是完整的液壓升降調節(jié)器優(yōu)化設計結果，以證明使用此測試平臺的可靠性，通過實驗計算出的值與實際測量值的比較分析證實，該計算值是可靠的方式獲得的，通過改變一些參數(shù)的優(yōu)化結果和在同一時間存在致動器考慮液壓控制系統(tǒng)的影響因素，以調整和完善執(zhí)行機構應確定。
本液壓系統(tǒng)以傳遞動力為主，保證足夠的動力是其基本要求。另外，還要考慮系統(tǒng)的穩(wěn)定性、可靠性、可維護性、安全性及效率。其中穩(wěn)定是指系統(tǒng)工作時的運動平穩(wěn)性及系統(tǒng)性能的穩(wěn)定性(如環(huán)境溫度對油液的影響等因素)。可靠性是指系統(tǒng)不因意外的原因而無法工作(如油管破裂、無電等情況)?？删S護性是指系統(tǒng)盡可能簡單，元件盡可能選標準件，結構上盡可能使維護方便．安全性是指不因液壓系統(tǒng)的故障導致后車廂蓋的其它事故．效率是指液壓系統(tǒng)的各種能量損失盡可能的小。上述要求中，除滿足系統(tǒng)的動力要求外，最重要的是保證系統(tǒng)的安全性和可靠性。
關鍵詞：液壓系統(tǒng)，升降機構
5
附 錄
Abstract
This article describes the car handling hydraulic lifts domestic situation and development trend , this departure from the system design to system analysis and design of the main line , highlighting the overall design of the mechanical system dynamics to explore body system dynamics modeling techniques integrated analysis system control and other issues clear choices and determine the specific implementing agency is the focus of this project on the basis of the characteristics of the actuator according to the actuator models that come out with the same mathematical model to control and adjust the model parameters through generating mechanism dimension series after repeated exploration demonstrated the eventual establishment of a targeted approach using a combination of theoretical analysis analogy is more convenient solution to vehicle handling hydraulic lift actuator design problems.
This paper introduces the general design of planar linkage overview of the methods for solving the optimal design methods and the general process of engineering design problems Based on vehicle handling hydraulic lift actuator force analysis made ??clear in the body of the main factors to consider when modeling a mathematical model for the right to provide a reliable basis for the model through the establishment of institutions to determine the objective function to determine the constraints running computer optimization procedures for vehicle loading and unloading process is complete hydraulic lift actuator optimal design results in order to prove the reliability of this test platform for the use of existing by changing some parameters of the optimization results for the calculated value by experiments and the actual measured value obtained by comparative analysis confirmed that this calculated value is reliable and at the same time that the actuator should be determined considering the influence factors of the hydraulic control system to adjust and improve executive body。
The hydraulic system to transfer power, ensure adequate power is its basic requirement. In addition, consider the system stability, reliability, maintainability, safety and efficiency. The stabilizing means when the system works steady motion and system performance stability (such as environmental temperature on the influence of oil etc). Reliability refers to the system is not due to accident reason to work ( such as tubing rupture without electricity, etc. ). Maintainability is referred to the system as simple as possible, element is chosen as far as possible standard parts, structure as much as possible so that the maintenance is convenient. Security is not due to the fault of the hydraulic system causes the antenna frame collapse or other accidents (such as the drop out of control, antenna due to gravity acceleration whereabouts ) . Efficiency refers to the hydraulic system of the various energy loss as small as possible. The above requirements, in addition to meet the power requirements, the most important thing is to ensure the safety and reliability of the system.
Keywords: hydraulic system, lifting mechanism
目 錄
摘 要 II
Abstract III
目 錄 V
第1章 緒論 1
1.1課題研究的目的 1
1.2 研究現(xiàn)狀 1
1.3 本課題的研究內容 2
第2章 車載輪椅升降機機構方案分析 4
2.1 方案一 4
2.2方案二 4
2.3 方案三 5
2.4方案四 5
2.5 方案確定 6
第3章 車載輪椅升降機機構機械結構設計 7
3.1 汽車尾部參數(shù) 7
3.2 尾板尺寸設計 7
3.3 設計尺寸 9
3.4 機構運動分析 9
3.5 受力分析 13
3.6 液壓原理圖 15
第4章 液壓系統(tǒng)設計計算 17
4.1 舉升液壓缸的設計 17
4.2 關門液壓缸的設計 20
4.3 活塞的設計 22
4.4 導向套的設計與計算 23
4.5 端蓋和缸底的設計與計算 24
4.6 缸體長度的確定 26
4.7 緩沖裝置的設計 26
4.8 排氣裝置 26
4.9 密封件的選用 28
4.10 防塵圈 30
4.11 液壓缸的安裝連接結構 30
第5章 液壓泵的參數(shù)計算 32
第6章 電動機的選擇 32
第7章 液壓元件的選擇 34
7.1 液壓閥及過濾器的選擇 34
7.2 油管的選擇 35
7.3 油箱容積的確定 35
第8章 驗算液壓系統(tǒng)性能 36
8.1 壓力損失的驗算及泵壓力的調整 36
8.2 液壓系統(tǒng)的發(fā)熱和溫升驗算 38
總結 40
參考文獻 42
致謝 43