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      液壓機液壓系統組成部分

      液壓機液壓系統組成部分

      作者:admin    來源:未知    發布時間:2020-08-18 21:00    瀏覽量:

      一個完整的液壓機液壓系統由五個部分組成,即動力元件、執行元件、控制元件、輔助元件(附件)和液壓油。液壓系統可分為兩類:液壓傳動系統和液壓控制系統。液壓傳動系統以傳遞動力和運動為主要功能。液壓控制系統則要使液壓系統輸出滿足特定的性能要求(特別是動態性能),通常所說的液壓系統主要指液壓傳動系統。

      動力元件

      液壓機液壓系統動力元件的作用是將原動機的機械能轉換成液體的壓力能,指液壓系統中的油泵,它向整個液壓系統提供動力。液壓泵的結構形式一般有齒輪泵、葉片泵、柱塞泵和螺桿泵。

      執行元件

      執行元件(如液壓缸和液壓馬達)的作用是將液體的壓力能轉換為機械能,驅動負載作直線往復運動或回轉運動。

      控制元件

      液壓機液壓系統控制元件(即各種液壓閥)在液壓系統中控制和調節液體的壓力、流量和方向。根據控制功能的不同,液壓閥可分為壓力控制閥、流量控制閥和方向控制閥。壓力控制閥包括溢流閥(安全閥)、減壓閥、順序閥、壓力繼電器等;流量控制閥包括節流閥、調整閥、分流集流閥等;方向控制閥包括單向閥、液控單向閥、梭閥、換向閥等。根據控制方式不同,液壓閥可分為開關式控制閥、定值控制閥和比例控制閥。

      輔助元件

      輔助元件包括油箱、濾油器、冷卻器、加熱器、蓄能器、油管及管接頭、密封圈、快換接頭、高壓球閥、膠管總成、測壓接頭、壓力表、油位計、油溫計等。

      液壓油

      液壓機液壓油是液壓系統中傳遞能量的工作介質,有各種礦物油、乳化液和合成型液壓油等幾大類。

       

       

      A complete hydraulic system of hydraulic press is composed of five parts, namely, power components, executive components, control elements, auxiliary components (accessories) and hydraulic oil. Hydraulic system can be divided into two categories: hydraulic transmission system and hydraulic control system. The main function of hydraulic transmission system is to transfer power and movement. The hydraulic control system is to make the output of the hydraulic system meet the specific performance requirements (especially the dynamic performance). Generally speaking, the hydraulic system mainly refers to the hydraulic transmission system.

      Power element

      The function of the power component of the hydraulic system of the hydraulic press is to convert the mechanical energy of the prime mover into the pressure energy of the liquid. It refers to the oil pump in the hydraulic system, which provides power to the whole hydraulic system. The structure of hydraulic pump is generally gear pump, vane pump, plunger pump and screw pump.

      Actuator

      The function of executive components (such as hydraulic cylinder and hydraulic motor) is to convert the pressure energy of liquid into mechanical energy and drive the load to perform linear reciprocating or rotary motion.

      Control element

      The hydraulic system control elements (i.e. various hydraulic valves) control and regulate the pressure, flow and direction of the liquid in the hydraulic system. According to the different control functions, the hydraulic valve can be divided into pressure control valve, flow control valve and direction control valve. The pressure control valve includes relief valve (safety valve), pressure reducing valve, sequence valve, pressure relay, etc.; the flow control valve includes throttle valve, adjustment valve, diversion and collecting valve; the directional control valve includes one-way valve, hydraulic control check valve, shuttle valve, directional valve, etc. According to the different control methods, the hydraulic valve can be divided into on-off control valve, fixed value control valve and proportional control valve.

      Auxiliary components

      Auxiliary components include oil tank, oil filter, cooler, heater, accumulator, oil pipe and pipe joint, sealing ring, quick change connector, high pressure ball valve, rubber hose assembly, pressure tap, pressure gauge, oil level gauge, oil temperature gauge, etc.

      Hydraulic oil

      The hydraulic oil of hydraulic press is the working medium of transmitting energy in the hydraulic system. There are many kinds of mineral oil, emulsion and synthetic hydraulic oil.

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