ZL15装载机总体及变速箱设计(3轴及齿轮)

设计题目：ZL15装载机总体及变速箱设计（3轴及齿轮）设计人：

摘要

我所设计的ZL15装载机既保留了传统装载机的优点，而且具有新的性能和优点。

本次设计主要进行的是变速箱的设计。ZL15装载机属于小型土方机械，广泛应用于城市建设工地及货场、煤场、仓库等装载及堆放松散货料的场所，并且可以用来完成轻度的挖掘及平整场地作业。

ZL15型装载机属于ZL系列，采用轮式行走系，液力机械传动系，铰接式车架,所以该机具有机动性好、转向灵活、生产率高、操纵轻便等优点。另外，该机后桥布置为摆动桥，增加了整机的稳定性，所以该机的安全性好。

ZL15型装载机采用定轴式变速箱，结构简单，制造成本较低，维修方便，特别是采用离合器外置式时，变速箱体尺寸小，便于总体布置。本机在设计中，参考同类机型，选用最佳传动方案，使机构简单，操作方便，并满足作业要求。定轴式变速箱采用动力换挡，使驾驶室操作便捷，减少劳动强度。

变速箱设计包括：变速箱型式的选择、传动比最终的确定、传动简图设计（前三后三档位）、所有齿轮的配齿计算、Ⅰ轴和Ⅱ轴离合器设计、结构设计（包括轴、轴承以及齿轮的选择校核计算）。

【关键词】轮式装载机定轴式变速箱换挡离合器变速箱设计

设计题目：ZL15装载机总体及变速箱设计（3轴及齿轮）设计人：

ABSTRACT

This type of ZL15 loader that I have designed has the common virtues of the traditional loaders.And it has some new-improved virtues and function.

In my design progress,I put emphasis on the gearbox design. The ZL15 loader belongs to pint-size earthmoving machine.It is suitable for the construction site, the freight yard and so on, where the bulk materials are placed. Other more, it can dig and level lightly.

ZL15 loader belongs to ZL series, using wheeled walking system, hydro mechanical drive, articulated car frame, so the loader has many advantages, such as good maneuverability、turning agility、high productivity、operate portability, and so on. In addition, setting the latter bridge as Swing Bridge increases the overall stability and the safety of the machine.

The ZL15 loader is adopted fixed-axis gear-box, which can simplifies the structure of the whole machine, lowers production costs and make it easier for general service. In the design, after referring to the same type machine, the best transmission scheme is adopted finally, which can minimize the number of the parts and makes the machine has reasonable transmission ratio, so as to satisfy the demand of operation. The fixed-axis gear-box adopts dynamic gear-shifting, which makes the operation of the cab handier, and reduces the intensity of labor.

Gearbox design, including: the choice of transmission type, to determine the final drive ratio, transmission schematic design (three after three stalls), all gears with teeth, Ⅰaxis and Ⅱaxis clutch design, structural design (including the axis , the choice of bearings and gears check prices).

【KEY WORDS】 wheeled loader fixed-axis gear-box Gear-shifting sleeve

Gearbox design

设计题目：ZL15装载机总体及变速箱设计（3轴及齿轮）设计人：

目录

第1章前言 (1)

第2章总体设计 (2)

2.1 概述 (2)

2.2 选择确定总体参数 (2)

2.3 装载机底盘部件型式选择 (12)

第3章牵引计算 (20)

3.1 柴油机与变矩器联合工作的输入与输出特性曲线 (20)

3.2 确定档位及各档传动比 (24)

3.3 运输工况牵引特性曲线 (27)

3.4 求出各档最高车速并分析牵引特性 (29)

第4章总体布置 (35)

4.1 估计各部件重量并确定部件位置坐标 (35)

4.2 各部件布置 (35)

4.3平衡重计算 (39)

4.4 验算轮胎载荷 (40)

第5章定轴式动力换档变速箱设计 (42)

5.1 传动比的确定 (43)

5.2 传动简图设计 (45)

5.3 配齿计算 (48)

5.4 离合器设计 (50)

5.5 结构设计 (53)