587 輕型載重貨車設計(轉向系及前橋設計)（有cad圖）

587 輕型載重貨車設計(轉向系及前橋設計)（有cad圖）,587,輕型載重貨車設計(轉向系及前橋設計)（有cad圖）,輕型,載重,貨車,設計,轉向,前橋,cad 輕型載重貨車設計(轉向系及前橋設計) 摘 要 在本次畢業(yè)設計中，是關于輕型載貨汽車的前橋及轉向系統(tǒng)的設計。本著力爭性能可靠，價優(yōu)，易造的設計構想，同時也主要參照拖廠的同類車型，努力去改造，去創(chuàng)新。 轉向從動橋是通過懸架和車相連，兩側安裝著從動車輪，用以傳遞車架與車輪之間的各種力和力矩。汽車的轉向系是利用轉向節(jié)使車輪可以偏轉一定角度以實現(xiàn)汽車的轉向。汽車的轉向系是用來改變或恢復汽車行駛方向的專設機構，在行駛中起到重要作用。主要可分為機械轉向系，動力轉向系和電動轉向系。其中電動轉向系是未來汽車轉向系的發(fā)展方向。 綜合各種因素，本次設計采用采用轉向梯形機構布置在前軸之后的整體式車橋和采用了正效率很高，操縱方便且使用壽命長的機械式循環(huán)球式轉向器。本次設計包括對轉向從動橋結構形式的選擇，主要是計算前軸、轉向節(jié)、主銷、主銷上下軸承、轉向節(jié)推力軸承或止推墊片等在制動和側滑兩種工況下的應力校核。還包括轉向器的結構選擇及其設計計算并對轉向梯形進行優(yōu)化設計。設計中水平有限，但希望能設計出一輛經濟實用的輕型載貨汽車。 關鍵詞：運輸車，前橋，主銷，轉向軸 I THE DESIGNS OF THE STEERING SYSTEM AND FRONT AXLE IN OWN UNLOAD AGRICULTURE TRUCK TO TRANSPORT OF KD1080 ABSTRACT In this graduated designs, my assignment is the light truck’s front axle and steering system. I shall try my best to design my assignment,I want the light truck’s capacity is secure and the price is low. It is also easy to make,at the same time,I refer to the light truck which made in YT factory.I want to improve and innovate it. Steering front axle connects the frame by suspension.Driven wheel are installed at the sides of the fore axle,which transmits kinds of forces and torques into the wheels. The steering knuckle link to the front axle causes the front wheels to turn to the right or left .The steering system enables the driver to guide the automobile or wheeled tractor down the road and turn ringht or left.It is very important for the truck.there are mannnual steering,power steering and electric power steering.The electric power steering system will be the direction in the future. In view of all the factors,I adopt the ladder-shaped organization assigns after the front axle and very efficient that can be handled easily and had long performance life steering box of the circulation ball type. The design includes selection of the structure of the fore axle but most calculate the streys inspection under the break and the second slide of front axle ,steering knuckle inserts, king pin and ball bearing, thrust bearing and stop last spacer. Still include choosing and designing aslo calculating and carrying on optimization design ladder-shapedly of steering. The level is limited in the design, but I hope to design a economical and practical agricultural light truck. KEY WORDS: transporter, the front axle, king pin, steering shaft III 主要符號表 量的名稱 量的符號 單位 汽車前軸靜載荷 N 汽車質心高度 mm 轉向阻力矩 Mr N.mm 接觸應力 σ MPa 前輪承受的制動力 N 前輪承受的垂直力 N 垂向彎矩 N.mm 水平彎矩 N.mm 車輪所受的重力 N 前輪輪距 B mm 兩鋼板彈簧座中心距 S mm 轉矩 T N.mm 輪胎的滾動半徑 mm 地面垂向反力 Z N 地面?zhèn)认蚍戳? Y N 力偶矩 Q N.mm 軸承的軸向載荷 N 軸承靜承載容量 KN 軸承當量靜載荷 KN 轉向軸輸入功率 Kw 轉向器中的摩擦功率 Kw 效率 導程角 rad 附著系數