ccy-14斜盘式轴向变量泵设计.rar

CCY-14斜盘式轴向变量泵设计

本科生机械方面的毕业设计论文，里面包括PPT、设计说明书、外文翻译、图纸、一条龙服务！


目  录
摘  要 3
ABSTRACT 5
前  言 7
第一章  斜盘式轴向柱塞泵工作原理与性能参数 9
1.1 斜盘式轴向柱塞泵工作原理 9
1.2 斜盘式轴向柱塞泵主要性能参数 10
1.3 斜盘倾角的确定 11
1.4 柱塞数选取 11
1.5 转速的确定 11
1.6 轴承及确定 11
第二章  斜盘式轴向柱塞泵运动学分析 14
2.1 柱塞行程 14
2.2 柱塞运动速度 15
2.3 柱塞运动加速度 15
第三章  柱塞设计 16
3.1 柱塞结构型式 16
3.2 柱塞结构尺寸设计 16
3.3 柱塞长度 17
3.4 柱塞球头直径 17
3.5 柱塞均压槽 18
3.6 柱塞摩擦副比压P 、比功 PV 验算 18
第四章  主轴的设计 20
4.1 主轴的最小直径的确定 20
4.2 按弯矩合成条件校核轴的强度 21
4.3 校核轴的强度 22
第五章  滑靴设计 23
5.1 泄漏功率损失 23
5.1.1 摩擦功率损失 23
5.1.2 滑靴总功率损失 24
5.2 滑靴结构型式与结构尺寸设计 24
5.2.1 滑靴结构型式 24
5.2.2 结构尺寸设计 25
第六章  配油盘设计 27
6.1 过度区设计 27
6.2 配油盘主要尺寸确定 28
6.3 验算比压P、比功PV 29
第七章  变量机构的设计 32
7.1 大弹簧的设计 32
7.2 小弹簧的设计 35
结  论 37
参考文献 38

 
摘  要
液压泵是液压系统的动力元件，其作用是将原动机的机械能转换成液体的压力能，向整个液压系统提供动力，因此液压泵是液压系统非常重要的元件之一。液压泵性能好坏直接影响液压系统工作的可靠性和稳定性。构成液压泵的基本条件是：(1)具有密封的工作腔。(2)密封工作腔容积大小交替变化，变大时与吸油口相通，变小时与压油口相通。(3)吸油口和压油口不能相通。液压系统中的各种液压泵，其工作原理都是依靠液压泵密封工作腔容积大小交替变化来实现的。
变量柱塞泵可分为斜盘式轴向柱塞泵和斜轴式轴向柱塞泵轴向。斜盘式与斜轴式轴向柱塞泵相比较，各有所长斜轴式轴向柱塞泵采用了驱动盘结构，使柱塞缸体不承受侧向力，所以，缸体对配油盘的倾复可能性小，有利于柱塞副与配油部位工作，另外，允许的倾角大，可是，结构复杂，工艺性差，需要使用大容量止推轴承，因而高压连续工作时间往往受到限制，成本高。斜盘式轴向柱塞泵，由于配油盘与缸体、滑靴与柱塞这两对高速运动副均采用了一静压支承，省去了大容量止推轴承，具有结构紧凑，零件少，工艺性好，成本低，体积小，重量轻等优点，从而使该泵获得了迅速发展，并且由于轴向泵比径向泵结构简单，制造成本低；斜盘式轴向柱塞泵容易实现无级变量，体积小，重量轻，维修方便；因而斜盘式轴向柱塞泵比较其他泵在技术经济指标上占很大优势，所以，斜盘式轴向柱塞泵在不断地改进和发展，其发展方向是：扩大使用范围、提高参数、改善性能、延长寿命、降低噪声，以适应液压技术不断发展的要求。
本论文主要介绍了斜盘式轴向柱塞泵是液压系统中的主要部件，斜盘式轴向柱塞泵是靠柱塞在柱塞腔内的往复运动，改变柱塞腔内容积实现吸油和排油的，是容积式液压泵，对于斜盘式轴向柱塞泵柱塞、滑靴、配油盘缸体是其重要部分，柱塞是其主要受力零件之一，滑靴是高压柱塞泵常采用的形式之一，能适应高压力高转速的需要，配油盘与缸体直接影响泵的效率和寿命，由于配油盘与缸体、滑靴与柱塞这两对高速运动副均采用了一静压支承，省去了大容量止推轴承，具有结构紧凑，零件少，工艺性好，成本低，体积小，重量轻，比径向泵结构简单等优点，由于斜盘式轴向柱塞泵容易实现无级变量，维修方便等优点，因而斜盘式轴向柱塞泵在技术经济指标上占很大优势。
根据计算的数据，使用AutoCAD 软件绘制出斜盘式轴向变量泵的各个工作零件，同时，绘制出斜盘式轴向变量泵的总装配图。
关键词：斜盘；柱塞泵；滑靴；
 
Abstract
Hydraulic pump is the power of the hydraulic system components, and its function is to convert the mechanical energy prime mover of the liquid pressure can, to the hydraulic system provide the power, so the hydraulic pump hydraulic system is very important to one of the components. Hydraulic pump performance has a direct impact on the hydraulic system of work reliability and stability. Constitute the basic condition of hydraulic pump are: (1) Sealed cavity of the work. (2) Sealed cavity volume changing alternately work size, the change of oil absorption with mouth is interlinked, small mouth with pressure oil empathy. (3) Oil absorption mouth and pressure oil mouth not is same. Hydraulic system of all kinds of hydraulic pump, the working principle all depend on hydraulic pump seal work cavity volume size will realize the variations.
Variable piston pump can be divided into swash-plate axial piston pump and inclined shaft type axial piston pump shaft to. And inclined shaft type swash-plate axial piston pump compare, each has his strong point inclined shaft type axial piston pump driven by the plate structure, make piston cylinder body does not bear lateral force, so, the cylinder with oil pan out of the complex possibility small, be helpful for piston vice and oil distributing parts work, in addition, allow large dip Angle, but, the structure is complex, craft is poor, need to use big thrust bearing capacity, and high pressure continuous work time often is restricted, high cost. Swash-plate axial piston pump, due to the oil pan and cylinder, sliding boots and piston this two high-speed motion pair adopted the supporting a static pressure and tell the large capacity thrust bearing, the structure is compact, less parts, good in usability, low cost, small volume, light weight and other advantages, so that the pump won the rapid development, and because the axial pump radial pump than simple structure, the manufacturing cost is low; Swash-plate axial piston pump is easy to realize stepless variable, small volume, light weight, convenient maintenance; Thus swash-plate axial piston pump is other pump in the technical and economic index of the great advantage, so, swash-plate axial piston pump in constant improvement and development, its development direction is: expanding the use of range, improving the parameters, improve performance, prolong life, reduce the noise, in order to adapt to the requirements of the development of hydraulic technology continuously.
This paper mainly introduced swash-plate axial piston pump is the main components of hydraulic system, swash-plate axial piston pump is depends on the plunger piston cavity in the reciprocating motion, change the piston cavity content product oil absorption and realize the exhibit, is cubage type hydraulic pump, for swash-plate axial piston pump plunger, sliding boots, mix the oil pan is an important part of the cylinder block, piston is one of the main stress parts, sliding boots is high pressure piston pump is often used to one of the form, can adapt to the need of high pressure is high speed, match oil pan and cylinder directly affect the efficiency of pumps and life expectancy, due to the oil pan and cylinder, sliding boots and piston this two high-speed motion pair adopted the supporting a static pressure and tell the large capacity thrust bearing, the structure is compact, less parts, good in usability, low cost, small volume, light weight, simple structure and so on than radial pump advantage, because swash-plate axial piston pump is easy to realize stepless variable, convenient maintenance, thus swash-plate axial piston pump in the technical and economic indexes of great advantage.
According to the calculation of data, use AutoCAD software rendering the swash-plate axial variable pump parts of each work, and at the same time, rendering the swash-plate axial variable pump of total assembly drawing.
Key words: Inclined dish；Piston pump；Sliding boots；