一、简介鼓形活塞是压缩机和动力机常用双作用活塞的一种通常结构形式。由于双作用活塞在气缸里频繁地进行往复运动,双面承压,所以,除小而短的气缸采用实心活塞外,其余多采用中空的鼓形结构。为加固承压面,在两端面中间皆布有数条筋板;为了支承砂芯和便于清除内部芯砂,一端面留数个出砂孔,待加工时采用堵头堵死并车平。其结构分别见图1、图2和图3。 I. Introduction Drum piston compressor and power machines are commonly used dual-acting piston of a general structure. Due to the double-acting piston frequently reciprocating in the cylinder, the pressure on both sides, so, in addition to small and short cylinder with a solid piston, the rest more hollow drum structure. In order to reinforce the pressure-bearing surface, there are several rib plates in the middle of the two end surfaces. In order to support the sand core and facilitate the removal of the inner core sand, a few sand holes are left at one end. Its structure is shown in Figure 1, Figure 2 and Figure 3 respectively.