液压货梯http://www.jnliqiao.com/是靠液压缸提供动力驱动工作台的升降，由结构原理和工作特点所决定，在工作台携带着货物和工件上升时，需要液压缸向其提供驱动力，即液压缸输出能量，把机械(液压)能转换成势能；而在工作台携带着工件下降时，重物的势能将被释放出来。
Hydraulic freight elevator is driven by a hydraulic cylinder powered lift table, as determined by the characteristics of the structure and working principle, at the table when carrying cargo and artifacts to rise, the need to provide the driving force of the hydraulic cylinder, hydraulic cylinder that output energy, the mechanical (hydraulic) energy is converted to potential energy; in the table carrying the workpiece is decreased, the weight of the potential energy will be released.
因此液压货梯在设计其液压系统时，应考虑势能回收，把工作台下降过程中释放出的势能转变成液压能，并在上升时加以利用，以减少无用功的消耗，提高能量的利用效率，并同时达成使系统运行平稳、工作安全可靠、结构简单、效率高、便于设计和应用。
Therefore, in the design of hydraulic freight elevator hydraulic system, you should consider the potential recovery, the decline bench during the release of potential energy into hydraulic energy, and use it when you rise, in order to reduce the consumption of wasted effort to improve the efficiency of energy use, and Meanwhile reach so smooth system operation, safe and reliable, simple structure, high efficiency, ease of design and applications.
液压货梯http://www.jnliqiao.com/将工作台下降过程中释放出的势能转变为液压能，并利用蓄能器将其储存起来，实现能量回收。当工作台再次上升时，蓄能器向液压泵供油，使再次上升过程中液压泵消耗的电动机功率减少，达到节能目的。因液压货梯只在垂直方向运动，其下降可借助重力实现，为简化液压缸结构、降低制造成本，采用了单作用缸；行程较大的升降机一般需采用两个液压缸，且要求两缸同步。
The drop table hydraulic freight elevators released during hydraulic energy into potential energy, and the use of the accumulator to store it, to achieve energy recovery. When the table to rise again, to pump oil accumulator, so the rise again during the hydraulic pump motor power consumption reduction, to save energy. Due to hydraulic freight elevator movement only in the vertical direction, the decline can be realized by means of gravity, in order to simplify the structure of the hydraulic cylinder, lower manufacturing costs, the use of a single-acting cylinder; large lift travel generally requires the use of two hydraulic cylinders, and requires two-cylinder synchronous .
