液压
1. 圆 筒筒壁 一般裂纹首先出现在内壁,逐渐向外发展,裂纹多方位纵向分布,或与缸壁母线成 45176。 2. 缸的法兰部分 首先在缸外部法兰过渡的圆弧处出现裂纹,逐渐沿着环向及向内壁扩展,最后裂透,或者裂纹扩展到螺钉孔,使法兰局部脱落,个别严重情况,甚至沿过渡圆角处法兰整园开裂而脱落。 燕山大学本科生毕业设计(论文) 6 3. 缸底 首先在内部过渡圆角处开始出现环形裂纹,逐渐向外壁扩展而裂透。
6500 2400 2400 mm 外型尺寸 9450 2490 3800 mm 吊装或吊卸时间 t 60s 倾翻角度 500 20 装载总质量 15t 车厢外伸 400mm 质量参数的确定 自卸车质量参数包括最大装载质量、整备质量、厂定最大总质量、质量利用系数等。 厂定最大装载质量 Me:根据用途,使用条件以及所选用底盘允许承载能力。 本次设计 取 Me=15000kg. 图 3— 2
e relief valve in damping hydraulic circuit. The reaction force in horizontal direction almost keeps constant that depends on the property of the relief valve. 4. Pressure/Position Control Method of
edge of the score, five key points were selected and their coordinates were measured. The width and depth of the score were then measured. In addition, a circular arc fit to these five points was
putation, generally includes the start acceleration, quickly enters, the labor enters, quickly draws back, decelerates applies the brake and so on several stages, each stage overall load strength has
eyor and the chock in a whole unit, respectively, a distinctive difference from the frame support. This setup is also used in the shields and chock shields. Again, all hydraulic legs are installed
in the front and four legs in the rear, separated by a walkway. For the sixleg chocks, the canopy is generally hingejointed above the walkway. Most chock are also equipped with a gob window hanging
最小厚度为(点 12 处 ),也就是说最大减薄率为 %。 不锈钢接合管 图 4 为 一个 由 液压成型法 制成的 亚米茄形联合管。 管件材料为不锈钢SUS304。 原始管件 是外径 (d0)为 216。 161mm,厚度 (t0)为 的激光对接管件。 所用 肋 管 的最大直径是 190mm。 由于管 件 的比率 (d0/t0)为 107,管件很薄,所以使得完成管件最后的封闭工序十分困难。
ower ponds from the external atmosphere and to reduce the air pressure in these regions through creation of a vacuum in accordance with the geometric scale of the model. Hydraulic Conditions
后确定总体方案,控制方案及主要的控制参数(如钻头扭矩 T、提升油缸大小、油泵压力等) 、结构设计 、刚度校核,绘制三维图 预期目标: ,电控系统图,液压控制图,零件工程图 1至 2道工序数控加工程序( CAM加工得到) 第 3 页,共 3 页 课题进度计划 撰写调研报告、开题报告、翻译外文文献( 2周) 总体方案对比分析、确定方案、计算主要工作参数( ) 电控系统设计( 1周 ) 机构设计( )