黄河少帅自卸车双级主减速器设计大学论文.docVIP

本科生毕业设计 PAGE II 摘 要 本设计是对载货汽车设计一个结构合理、工作性可靠的双级主减速器。此双级主减速器是由两级齿轮减速组成。与单级主减速器相比，在保证离地间隙相同时可得到很大的传动比，并且还拥有结构紧凑，噪声小，使用寿命长等优点。本文论述了双级主减速器各个零件参数的设计和校核过程。设计主要包括：主减速器结构的选择、主、从动锥齿轮的设计、轴承的校核。主减速器是汽车传动系中减小转速、增大扭矩的主要部件，它是依靠齿数少的锥齿轮带动齿数多的锥齿轮。对发动机纵置的汽车，其主减速器还利用锥齿轮传动以改变动力方向。 关键词：载货汽车；双级主减速器；齿轮；校核；设计 ABSTRACT This design is designs a structure to the truck to be reasonable, work related reliable two-stage main gear box. This two-stage main gear box is composed of two level of gear reductions. Compares with the single stage main gear box, when the guarantee ground clearance is the same may obtain the very great velocity ratio, and also has the structure to be compact, the noise is small, service life long and so on merits. This article elaborated the two-stage main gear box each components parameter computation and the selection process, and through computation examination. The design mainly includes: Main gear box structure choice, host, driven bevel gears design, bearings examination. The main reducer in the transmission lines used to reduce vehicle speed, increased the torque , it is less dependent on the bevel of more gear drive of less bevel gear . Purchase of the longitudinal engine automobiles, the main bevel gear reducer also used to change the driving force for the direction of transmission. Key words: Truck；Two-stage Main Reduction Gear；Gear；Check 目 录  TOC \o 1-3 \h \z \u  HYPERLINK \l _Toc233801394 摘要  PAGEREF _Toc233801394 \h I  HYPERLINK \l _Toc233801395 Abstract  PAGEREF _Toc233801395 \h II  HYPERLINK \l _Toc233801396 第1章 绪论  PAGEREF _Toc233801396 \h 1  HYPERLINK \l _Toc233801397 1.1 概述  PAGEREF _Toc233801397 \h 1  HYPERLINK \l _Toc233801398 1.1.1 主减速器的概述  PAGEREF _Toc233801398 \h 1  HYPERLINK \l _Toc233801399 1.1.2 主减速器设计的要求  PAGEREF _Toc233801399 \h 1  HYPERLINK \l _Toc233801400 1.2 主减速器的结构方案分析  PAGEREF _Toc233801400 \h 2  HYPERLINK \l _Toc233801401 1.2.1 主减速器的减速形式  PAGEREF _Toc233801401 \h 2  HYPERLIN