AMEE2020上海國際汽車底盤系統與制造工程技術展覽會

【參展聯系：馬小姐 15121196695 同V】

AMEE2020上海國際汽車底盤系統與制造工程技術展覽會定于2020 年10 月26-28 號在上海世博展覽館舉辦，預計將有350家世界各地企業參展，以及超過15000名汽車行業專業觀眾參觀！

AMEE是全球汽車行業唯一專為汽車底盤系統產業鏈領域舉辦的專業技術展覽會，展會將打造新能源汽車底盤系統智能化、電動化、電子化、輕量化，以及乘用車、商用車、特種車底盤設計開發工程、先進制造工程、底盤趨勢工程、精益產品工程等產業鏈前沿技術與解決方案展示平臺。

汽車底盤造和四大體詳

解

車架

一、功用車架是汽車的基體，如發動機、變速器、傳動機構、操縱機構、車身等總成和部件都安裝于車架上。

二、車架的類型

汽車上裝用的車架按其結構形式不同可分為：邊梁式車架、中梁式車架、綜合式車架和無梁式車架。邊梁式車架由位于右左兩側的兩根縱梁和若干橫梁構成，橫梁和縱梁一般由16Mn合金鋼板沖壓而成，兩種者之間采用鉚接或焊接連接。中梁式車架只有一根位于汽車中央的縱梁。縱梁斷面為圓形或矩形其上固定有橫向的托架或連接梁，使車架成魚骨。

車橋

一、作用車橋通過懸架與車架連接，支承著汽車大部份重量，并將車輪的牽引力或制動力，以及側向力經懸架傳給車架。

二、類型汽車的車橋分為整體式和斷開式兩種。按使用功能劃分，車橋又可分為轉向橋、轉向驅動橋、驅動橋和支持橋。

1、轉向橋

安裝轉向輪的車橋叫轉向橋。現代汽車一般都是前橋轉向，也有少數是多橋轉向的。

a、與非獨立懸架匹配的轉向車橋

這類轉向橋結構大體相同，主要由前梁，轉向節，主銷和輪轂等部分組成。車橋兩端與轉向節絞接。前梁的中部為實心或空心梁。

b、與獨立懸架匹配的轉向橋

斷開式轉向橋的作用與非斷開式轉向橋一樣，所不同的是斷開式轉向橋與獨立懸架匹配，斷開式車橋為活動關節式結構。

c、轉向車輪定位

為了使汽車保持穩定的直線行駛，轉向輕便、減少輪胎與轉向機構的摩損，要求裝配后的轉向車輪、轉向節和前軸與車架有正確的相對位置。前輪、前軸、轉向節與車架的相對安裝位置，稱為轉向車輪定位，也稱前輪定位。前輪定位包括主銷后傾、主銷內傾、前輪外傾、前輪前束四個參數。

●主銷后傾：主銷裝在前軸上后，其上端略向外傾，稱為主銷后傾。

●主銷內傾：主銷裝在前軸上后，其上端略向內傾，稱為主銷內傾。

●前輪外傾：汽車的前輪安裝后，其旋轉平面上方略抽外傾，稱為前輪外傾。

●前輪前束：汽車兩個前輪的旋轉平面不平行，前端略向內收，稱為前輪前束。汽車的前束值一般小于10mm，通過改變橫拉桿的長度可以調整前束的大小。

2、支承橋

轉向橋和支持橋都屬于從動橋。有些單橋驅動的三軸汽車，往往將后橋設計成支持橋。掛車上的車橋也是支持橋。發動機前置前驅動轎車的后橋也屬于支橋。

Amee2020 Shanghai international automobile chassis system and Manufacturing Engineering Technology Exhibition

[contact: Miss Ma 15121196695 with wechat]

Frame

1、 Functional frame is the base of automobile, such as engine, transmission, transmission mechanism, control mechanism, body and other assemblies and components are installed on the frame.

2、 Type of frame

According to the different structure forms, the frame of automobile can be divided into side beam frame, middle beam frame, comprehensive frame and non beam frame. The side beam frame is composed of two longitudinal beams and several transverse beams on the right and left sides. The transverse beams and longitudinal beams are generally made of 16Mn alloy steel plate by stamping, and the two are connected by riveting or welding. The center beam frame has only one longitudinal beam in the center of the car. The longitudinal beam section is circular or rectangular, on which a transverse bracket or connecting beam is fixed to make the frame fishbone.

Axle

1、 The action axle is connected with the frame through the suspension, supporting most of the weight of the car, and transmits the traction or braking force of the wheel and the lateral force to the frame through the suspension.

2、 There are two types of axles: integral type and disconnected type. According to the use function, the axle can be divided into steering axle, steering drive axle, drive axle and support axle.

1. Steering axle

The axle on which the steering wheel is installed is called the steering axle. Modern cars usually turn at the front axle, and a few turn at multiple axles.

a. Steering axle matched with dependent suspension

The structure of this kind of steering axle is basically the same, mainly composed of front beam, steering knuckle, main pin and hub. The two ends of the axle are hinged with the knuckle. The middle part of the front beam is a solid or hollow beam.

b. Steering axle matching independent suspension

The function of the split steering axle is the same as that of the non split steering axle. The difference is that the split steering axle is matched with the independent suspension, and the split axle is a movable joint structure.

c. Steering wheel alignment

In order to keep the vehicle running in a stable straight line, turn easily and reduce the friction between the tire and the steering mechanism, it is required that the assembled steering wheel, knuckle and front axle have the correct relative position with the frame. The relative installation position of front wheel, front axle, knuckle and frame is called steering wheel alignment, also known as front wheel alignment. Front wheel alignment includes four parameters: kingpin caster, kingpin inclination, front wheel camber and front wheel toe in.

● kingpin caster: when the kingpin is installed on the front axle, its upper end slightly tilts outward, which is called kingpin caster.

● kingpin inclination: when the kingpin is installed on the front axle, its upper end slightly inclines inward, which is called kingpin inclination.

● front wheel camber: after the front wheel of the car is installed, the front wheel camber refers to the slight camber on the rotating plane.

● front wheel toe in: the rotation plane of the two front wheels of the car is not parallel, and the front end slightly retracts inward, which is called front wheel toe in. The toe in value of the car is generally less than 10 mm. The toe in size can be adjusted by changing the length of the tie rod.

2. Supporting bridge

Both the steering axle and the support axle belong to the driven axle. Some single axle drive three axle vehicles often design the rear axle as a support axle. The axle on the trailer is also the support axle. The rear axle of the front engine driven car also belongs to the branch axle.

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