液压缸的结构基本上可以分为缸体组件、活塞组件、密封装置、缓冲装置和排气装置五个部分。缸体组件和密封装置构成液压缸的密封容积来承受液压力，所以缸体组件要有足够的强度、刚度和可靠的密封性。

1、升降机法兰连接式，结构简单，容易加工，也容易装拆，但外形尺寸和质量都较大，常用于铸铁制的缸筒上。
Speaking lifts lift manufacturers flanged, simple structure, easy to process, but also easy assembly and disassembly, but the dimensions and quality are larger, the commonly used cast-iron cylinder.

2、半环连接式，它的缸筒壁部因开了环形槽而削弱了强度，为此有时要加厚缸壁，它容易加工和装拆，质量较轻，常用于无缝钢管或锻钢制的缸筒上。
Lift manufacturers introduced a half loop-connected, its cylinder wall due to open the annular groove weakened strength, for sometimes thicker cylinder walls, its easy processing and assembly and disassembly, light quality, commonly used in seamless steel or wrought steel cylinder barrel.

3、升降平台厂家谈到螺纹连接式，它的缸筒端部结构复杂，外径加工时要求保证内外径同心，装拆要使用专用工具，它的外形尺寸和质量都较小，常用于无缝钢管或铸钢制的缸筒上。
Speaking lift manufacturers threaded connection type, cylinder ends its complex structure and, where required to ensure that the outside diameter of the outer diameter of the inner concentric machining, assembly and disassembly use a special tool, its dimensions and quality are less commonly used in seamless steel or cast steel cylinder barrel.

4、升降平台厂家介绍拉杆连接式，结构的通用性大，容易加工和装拆，但外形尺寸较大，且较重。
Lift manufacturers introduce rod connection type, universal structure of large, easy processing and assembly and disassembly, but the larger dimensions and heavier.