液压缸结构设计 典型结构：缸体组件、活塞组件、密封件、连接件、缓冲装置、排气装置等 设计依据：缸工作压力、运动速度、工作条件、加工工艺及拆装检修等 缸体与端盖的结构设计 缸体与端盖的连接： 法兰连接 半环连接 螺纹连接 拉杆连接 焊接连接 缸体与端盖的连接 ∵工作压力、缸体材料、工作条件不同 ∴有许多低压连接形式，铸铁缸体，大尺寸 连接形式的缸体和端盖 法兰连接：高压，需焊接法兰盘，较杂。
半环连接：内半环—结构简单、紧凑、装卸方便（但因缸体上开了环行槽，强度削弱）；外半环 螺纹连接：内螺纹重量轻，外径小，但端部复杂，外螺纹装卸不便，需专用工具 焊接连接 拉杆连接通用性好，缸体加工方便，装拆方便，但端盖体积大，重量也大，拉杆受力后会拉伸变形，影响端部密封效果，只适于低压. 活塞和活塞杆的连接 ∵工作压力、安装方式、工作条件的不同。
∴活塞组件有多种结构形式 整体式：常用于小直径液压缸，结构简单，轴向尺寸紧凑，但损坏后需整体更换 活塞和活塞杆的连接 焊接式：同上 锥销式：常用于双杆缸，加工容易，装配简单，但承载能力小，且需防止脱落 螺纹式：常用于单杆缸，结构简单，装拆方便，但需防止螺母松动。
半环式：常用于高压大负载或振动比较大的场合，强度高，但结构复杂，装拆方便 活塞杆头部结构 活塞杆：是连接活塞和工作部件的传力零件，必须具有足?够的强度和刚度，一般用钢料制成,且需镀铬 液压缸的缓冲装置 缓冲的必要性 ∵在质量较大、速度较高(v>12m/min），由于惯性力较大，活塞运动到终端时会撞击缸盖，产生冲击和噪声，严重影响加工精度，甚至使液压缸损坏。
∴常在大型、高速、或高精度液压缸中设置缓冲装置或在系统中设置缓冲回路 缓冲原理：利用节流方法在液压缸的回油腔产生阻力，减小速度，避免撞击 缓冲装置类型 (1)圆柱形环隙缓冲装置 (2)圆锥形环隙缓冲装置 （3）可变节流槽式缓冲装置 (4)可调流孔缓冲装置 液压缸的排气装置 排气的必要性 ∵系统在安装或停止工作后常会渗入空气 ∴使液压缸产生爬行、振动和前冲，换向精度降低等。
故?必须设置排气装置 排气方法 1排气孔油口设置在液压缸最高处 2排气塞象螺钉（如暖气包上的放气阀） 3排气阀使液压缸两腔经该阀与油?箱相通启动时，拧开排气阀使液压缸空载往复运动几次即可 90-L-075-KN-1-AB-80-R-3-S1-E-03-GBA-29-29-24 90L075KN1AB80R3S1E03GBA292924 90-L-075-KN-1-AB-80-R-4-S1-D-03-GBA-38-38-24 90L075KN1AB80R4S1D03GBA383824 90L075-KN-1-BC-60-R-3-C7-E-03-GBA-32-14-32 90L075KN1BC60R3C7E03GBA321432 90-L-075-KN-1-BC-60-R-3-C7-E-03-GBA-32-14-32 90L075KN1BC60R3C7E03GBA321432 90-L-075-KN-1-BC-60-R-3-S1-D-03-GBA-32-32-24 90L075KN1BC60R3S1D03GBA323224 90-L-075-KN-1-BC-80-D-3-S1-L-00-GBA-26-26-24 90L075KN1BC80D3S1L00GBA262624 90L075-KN-1-BC-80-R-3-S1-D-03-GBA-29-29-24 90L075KN1BC80R3S1D03GBA292924 90-L-075-KN-1-BC-80-R-3-S1-D-03-GBA-29-29-24 90L075KN1BC80R3S1D03GBA292924 90-L-075-KN-1-BC-80-R-3-S1-E-03-GBA-29-29-24 90L075KN1BC80R3S1E03GBA292924 90-L-075-KN-1-BC-80-R-4-S1-D-03-GBA-29-29-24 90L075KN1BC80R4S1D03GBA292924 90-L-075-KN-1-BC-80-R-4-S1-D-03-GBA-38-38-24 90L075KN1BC80R4S1D03GBA383824 90-L-075-KN-1-BC-80-S-4-S1-D-03-GBA-29-29-24 90L075KN1BC80S4S1D03GBA292924 90-L-075-KN-1-CD-60-S-4-S1-D-03-GBA-35-35-24 90L075KN1CD60S4S1D03GBA353524 90-L-075-KN-1-CD-80-D-4-S1-L-03-GBA-35-35-24 90L075KN1CD80D4S1L03GBA353524 90-L-075-KN-1-CD-80-P-4-S1-D-03-GBA-40-40-30 90L075KN1CD80P4S1D03GBA404030 90-L-075-KN-1-CD-80-R-3-S1-D-03-GBA-29-29-24 90L075KN1CD80R3S1D03GBA292924 90-L-075-KN-1-CD-80-R-3-S1-E-03-GBA-29-29-24 90L075KN1CD80R3S1E03GBA292924 90L075-KN-1-CD-80-R-3-S1-E-03-GBA-29-29-24 90L075KN1CD80R3S1E03GBA292924 90-L-075-KN-1-CD-80-R-4-C6-D-03-GBA-42-14-24 90L075KN1CD80R4C6D03GBA421424 90-L-075-KN-1-CD-80-R-4-S1-D-03-GBA-29-29-24 90L075KN1CD80R4S1D03GBA292924 90-L-075-KN-1-CD-80-R-4-S1-D-03-GBA-42-42-24 90L075KN1CD80R4S1D03GBA424224 90L075-KN-1-CD-80-R-4-S1-D-03-GBA-42-42-24 90L075KN1CD80R4S1D03GBA424224 90-L-075-KN-1-CD-80-S-4-S1-D-03-GBA-29-29-24 90L075KN1CD80S4S1D03GBA292924 90-L-075-KN-1-CD-80-S-4-S1-D-03-GBA-42-42-24 90L075KN1CD80S4S1D03GBA424224 90-L-075-KN-1-NN-60-L-4-S1-D-03-GBA-35-35-20 90L075KN1NN60L4S1D03GBA353520 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