四柱液壓機的工作原理油泵把液壓油輸送到集成插裝閥塊，通過各個單向閥和溢流閥把液壓油分配到油缸的上腔或者下腔，在高壓油的作用下，使油缸進行運動.液壓機是利用液體來傳遞壓力的設備。
The working principle of thefour column hydraulic machine oil pump transmission and hydraulic oil sent tointegrated cartridge valve block, through the one-way valve and the overflowvalve to hydraulic oil distribution to the cylinder cavity or cavity, in underthe action of high pressure oil, the cylinder motion. Hydraulic machine is theuse of liquid pressure transfer device.
四柱液壓機的液壓傳動系統由動力機構、控制機構、執行機構、輔助機構和工作介質組成。動力機構通常采用油泵作為動力機構，一般為積式油泵。為了滿足執行機構運動速度的要求，選用一個油泵或多個油泵。
Four column hydraulicmachine hydraulic system is composed of a power mechanism, a control mechanism,execution mechanism, auxiliary mechanism and working medium. The powermechanism usually adopts the oil pump as the power mechanism. In order to meetthe requirements of the implementation of the speed of movement of theactuator, the use of an oil pump or a plurality of oil pump.
在冬季對油壓機的保養維護應注意以下幾點：
In winter, the maintenanceof hydraulic machine should pay attention to the following points:
一、油壓機液壓油的存放。液壓油要用專門的油桶進行存放、密封蓋好，放到溫度恒定的屋內進行存放。以免天冷密封性不好進入空氣凝結成水汽影響油質，避免因鐵桶生銹脫落參雜進液壓油影響機器的正常使用。
One, the hydraulic oilstorage. Hydraulic oil should be used for oil storage, sealing cover, inconstant temperature storage house. To avoid cold sealing well into the aircondenses into water vapor effect of oil, to avoid iron rust off doped into thenormal use of the hydraulic oil of the machine.
二、經常對液壓系統進行檢查維護，更換工作用液壓油（原則上每工作2000小時更換一次液壓油）。當然更換的液壓油最好是專門冬天使用的。除此之外就是要做好油壓機的油箱的防凍工作。其次就是做好油壓機各個部件的潤滑工作，一定要定期的添加潤滑油，尤其是機器的導軌接觸面。
Two, often on the hydraulicsystem for inspection and maintenance, replacement of hydraulic oil (inprinciple, every 2000 hours to replace the hydraulic oil). Of course, thereplacement of the hydraulic oil is the best use of special winter. In additionis to do a good job in the oil tank of the hydraulic machine. Second is to do agood job in all parts of the hydraulic machine lubrication work must be regularto add lubricating oil, especially the machine guide rail contact surface.
三、對于冬季中使用的液壓機的液壓泵站系統，進行有步驟的保暖掩蓋防護。
Three, for the use ofhydraulic pressure pump station system in winter, to carry out the steps ofthermal protection.
四、油壓機在工作前，應先預熱30多分鐘，機器做空載運行幾次方可進行加工作業。
Four, hydraulic press（www.kougasha.net） before work, should be more than 30 minutes to warm up, the machine to do a few timesto run a few times to carry out processing operations.
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