通常情况下，重庆货梯http://www.jnliqiao.com/采用单作用液压缸，在较为干燥的空气中使用。当浙江货梯起升时，油箱中的油通过机泵等设备在大气压力下进入液压缸下腔，上腔排气，液压缸伸出，臂板支起，浙江货梯便升起来，然后上腔的气体通过排气管进入油箱液面上，再通过油过滤器进入大气；当重庆货梯下降时，下腔排油，上腔吸气液压缸缩回。重庆货梯液压缸吸排油一次升降一次，频繁用于生产线上的浙江货梯升降次数可达200次/天。
In general, the Zhejiang cargo ladder using a single acting hydraulic cylinder, in the more dry air in the use of. When the goods in Zhejiang ladder lifting, oil tank through the pumps and other equipment in atmospheric pressure into hydraulic cylinder cavity, on the exhaust cavity, out of hydraulic cylinder, supporting arm board, Zhejiang goods ladder will rise up, and then on the cavity of the gas through the exhaust pipe into the liquid fuel tank, and then through the oil before filter into the atmosphere; when the decline in Zhejiang goods ladder, inferior oil drain, on the suction cavity hydraulic cylinder retracted. Zhejiang cargo ladder hydraulic cylinder oil suction and discharge once,frequently used in the production line of Zhejiang cargo lift up to 200 times the number of times.  

在潮湿环境中，重庆货梯http://www.jnliqiao.com/下降时，上腔吸气空气中的水分进入液压缸上腔，直接与缸筒内壁金属作用，出现锈层，使本来光亮的缸筒内部发黑，来回作用出现剥落，重庆货梯下沉明显需要更换液压缸。
In damp environment, Zhejiang goods ladder fell, moisture on the suction cavity air into the hydraulic cylinder, direct and inner wall of the cylinder metal interaction, rust layer, make originally bright inside the cylinder barrel black, and effect of flaking, Zhejiang goods ladder sinking obviously need to replace the hydraulic cylinder.