hjy基于PLC的闸瓦液压机控制系统外文翻译.pdf
hjy 基于 PLC 的闸瓦液压机控制系统外文翻译 2 作者：日期：个人收集整理 勿做商业用途 3 基于 PLC 的闸瓦液压机控制系统 英文及翻译 Four-column hydraulic press 1Fourcolumn hydraulic press used Fourcolumn hydraulic press for plastic materials in the pressing process.Products such as powder molding，plastic molding，cold(hot）extrusion of metal forming，sheet tension and transverse compression,bending pressure，turn through,correction process。2.Four-column Hydraulic Press Features Fourcolumn hydraulic press with an independent power sector and the electrical system，using the button focus control enables adjustment，manual and semiautomatic three kinds of work:Four-column hydraulic pressure of work，pressing speed，load fast and slow down the schedule and the scope of may need to be adjusted according to process and can complete the top of the process,can take the top out of process,drawing process three kinds of process methods，each process has to be pressure,will be two-way action for the selection process,constant pressure molding process After the suppression of a delay with the top and automatic return。Fourcolumn hydraulic characteristics.Four-column hydraulic press is the use of pressure compression forming objects。Is used to provide medium pressure hydraulicoil.Four-column hydraulic machine structure is simple and economical,practical。Appearance by octagonal shape。Fourcolumn hydraulic press control electrical box with glass doors，PLC or computer control two general appliances，with reliable,reliable，direct action,and maintenance.Centralized control of the independent button。With the adjustment,his hands a single cycle of two kinds of operation mode。Four-column Hydraulic Press Hydraulic Control Valve can be used integrated system，and reliability，long life,small hydraulic impact，reducing the 个人收集整理 勿做商业用途 4 connecting pipe and the leak point,or common hydraulic control two。3。Four-column hydraulic machine failure and maintenance of the common methods Fourcolumn hydraulic machine failure and maintenance of the common methods:in the winter and the worse condition，should be ground on the fourcolumn hydraulic system inspection,ground maintenance，oil change jobs often.Fourcolumn hydraulic press work on the oil storage and transfer should be very much attention.Sheng drums plus special signs should be up and cover.In the winter，do not pay attention to the barrel while the result of the air condensed into water mixed with oil，not to be rusty rust bucket leather pieces into bins.Winter on the column hydraulic machine engine and other mechanical systems to the various preventive measures such as cover frost，heat insulation,for work with low viscosity oil，are suitable for hydraulic systems.In the Fourcolumn hydraulic press hydraulic transmission system,are some of the more sophisticated parts.People on the four-column hydraulic machine hydraulic felt like labor-saving convenience,but at the same time feel that it is easy to damage.The reason is not clear column hydraulic main working principle and structure characteristics，which do not quite understand the preventive maintenance approach。Hydraulic system has three basic causative factors:pollution，overheated and into the air。These three negative factors has close relationship，there any one issue,it will create another one or more related problems.From the practice shows that 75 of hydraulic system disease because，were caused by these three。1，four column hydraulic press working oil into the dirt and deterioration due to 2，overheating 3 solution into the air:The Fourcolumn hydraulic system some of the major precision parts cleaning and assembly，shall be carried out in a very clean room，indoor should be have clean floors and windows and doors closed,the temperature is best maintained at around 200C。4。Four-column hydraulic machine common method of general maintenance 个人收集整理 勿做商业用途 5 Four-column hydraulic press common method of general maintenance （1）Fourcolumn hydraulic press action,or failure of electrical wiring is not strong then check the electrical fault (2）Fourcolumn hydraulic press slider creeping accumulation of air or a system，two precision air pump to adjust properly or check the pump suction column short of petroleum and an air intake pipe is then repeatedly pressurized two columns up and down movement and add oil,re-adjustment accuracy （3）Fourcolumn hydraulic press with pressure when the slide slow down its support for excessive backpressure valve to the cylinder to adjust the cavity without pressure,the maximum not more than 1MPa，four column hydraulic press,after stopping a serious one slipped under the brim slide 2 pressure valve seal ring leakage pressure adjustment is too small or the pressure I strictly an observation brim，hair oil deflated to adjust pressure Check Valve 2 5。Four-column hydraulic pressure gauge pointer swings a powerful memory with air pressure gauge oil line pipe mechanical vibration 3 2 1 on the pressure gauge when the damage slightly loosen the fittings,gas discharge tube card 2 will replace the pressure gauge in prison 3 6.Fourcolumn hydraulic machine travel speed is not enough pressure，the pressure behind a highpressure pump flow adjustment too small 2 pump wear or leakage of serious burns 3 system 1 according to the instructions to adjust pump，the pump in the eccentricity 25MPa adjustable adjusted to 5 Georgia 2 If the pump back to the oil port leakage is large，should remove the check 7。Fourcolumn hydraulic packing pressure drop is too fast when 1 is involved in the packing of loose or pipe leaking valve 2-cylinder liquid-filled seal ring damage a check valve,keeping the pressure relief valve of the sealed joint case study 2 replacement seal ring 8。On the spiral column hydraulic machine On the spiral column hydraulic machine：This practical spiral column hydraulic machine,hydraulic machine in the field are involved，with special hydraulic screw drive,its mission is to provide a transmission 个人收集整理 勿做商业用途 6 device so that the main nut thread Zhi suppress the slide workpiece 受 leverage，repression at the slider Fei workpiece trip，the main thrust nut from the role of hydraulic cylinders，so that oil pressure is sufficient to the spiral plane.The spiral column hydraulic machine,screw position in the central axis of the fuselage and through the bearings installed in the camera body,screw top and one inertia wheel connected to the main nut on the screw with the lower section of the main slide through the main flange and connected to one；nut with the screw midway through the Deputy Viceflange and connected to one slide，spiral column hydraulic machine to the central axis of symmetry installation guide,the main slide，slide along the guide rail sliding connection vice，hydraulic cylinder to the central axis of body symmetry installed in the camera body,the hydraulic cylinder piston rod end of the slider hinge connection with the Deputy,can improve the nut,screw lubricating conditions，to extend the life of spiral column hydraulic machine。Hydraulic Fourcolumn hydraulic machine on the station:Four-column hydraulic press hydraulic station works as follows:motor driven rotary pump，the pump suction from the tank after the Da You,the mechanical energy into hydraulic oil pressure to hydraulic oil through the manifold block(or valve combination)is to achieve the direction of hydraulic valves,pressure,flow regulation by external piping after the transfer to the hydraulic cylinder or mechanical motor oil,thus controlling the direction of the transformation of liquid motivation,strength and speed of the size and promote a variety of hydraulic mechanical work.Fourcolumn hydraulic press hydraulic station,also known as hydraulic pump station,is an independent hydraulic unit.It is required by the host oil supply,and control the direction of oil flow,pressure and flow，it applies to the host and the various hydraulic loading detachable column hydraulic machines。After the user purchases as long as the pressure points and the host will be the implementing agency(tank or oil motor）is connected with pipes,hydraulic machinery can achieve the various provisions of the movement,the work cycle.Fourcolumn hydraulic press hydraulic station by the pump,manifold block or valve combination,fuel tank,electrical box combination。Function of each part as follows：Pump device equipped with motors and pumps,it is the Four-column Hydraulic 个人收集整理 勿做商业用途 7 Press Hydraulic station power source，the mechanical energy into hydraulic fluid pressure energy.Manifold hydraulic valves and passages from the assembled body.The implementation of its direction of hydraulic oil，pressure，flow regulation.Valve combination-is the plate valve installed in the standboard，board after the tube connections，and integrated block the same function.Fuel tank is half-closed container plate welding,also equipped with air filter oil filtering network and so on，it used oil,oil cooling and filtering。Electrical box-divided in two forms.A kind of set the external lead terminal board;one is equipped with a full set of control appliances.Four-column hydraulic pressure small what reasons：Four-column hydraulic pressure small reasons:1.Four-column oil hydraulic cylinder dirty it？2.Pressureout it?Pressure started?3。Four-column hydraulic machine a long time,with the loose parts，within the vent it?1,four column hydraulic pump wear serious leak within the major。2，relief valve failure,is always open.3，the direction of valve internal leakage big。4,four column hydraulic press in the implementation of the original leak，suggesting a small pump pressure.Fourcolumn Hydraulic Press Hydraulic Forming Process Applications Column hydraulic machine hydraulic forming process in the automotive,aviation，space and plumbing industries has been widely used,column hydraulic machine hydraulic forming process is mainly applied to：changes along the component axis round,rectangular,or shaped cross section hollow structural parts,such as car Special-shaped pieces of the exhaust system；noncircular cross section hollow frameworks,such as engine brackets，instrument panel frame，body frame(about 11 of car quality to 15%）；hollow shaft and complex pipe fittings.Four-column Hydraulic Press Hydraulic Forming Process for materials including steel，stainless steel，aluminum，copper alloys and nickel alloys,in principle,apply 个人收集整理 勿做商业用途 8 to the cold forming of the materials are applied to Four-column Hydraulic Press Hydraulic Forming Process.Four-column hydraulic machine hydraulic system Four-column hydraulic press hydraulic transmission technology is the use of pressure processing equipment，can be used to complete a variety of forging and forming pressure.For example，steel forging,the forming of metal structural parts，plastic products and rubber products，such repression.Fourcolumn hydraulic press is the first application of hydraulic machinery,the current hydraulic pressure processing machinery has become the main form of transmission。Four-column hydraulic machine in heavy machinery manufacturing,aerospace industries，plastic and nonferrous metal processing industries among the four column hydraulic press has become an important device.About four column hydraulic press is not holding pressure problems。Q：Four-column hydraulic press is not up,startup switch has 10MM action,increased and then not holding pressure，sliding body of work down，how is it?Answer:First check the column hydraulic pump outlet pressure,pressure control system,support valve is stuck。Piston down and the inferior vena not support force,not holding pressure may be four column hydraulic relief valve leakage。Four-column hydraulic press system is relatively simple，the first not considered too much trouble to repair Four-column hydraulic presses and pneumatic presses the difference between Four-column hydraulic presses and pneumatic presses,pneumatic machines have different noise power is small，and easy maintenance will not leak；column hydraulic machine quiet，strong and maintenance of little more complicated.Mainly depends on application。Steel plant noise already relatively large，and may from time to consider the noise factor.If the power requirements of larger,then select column hydraulic machine。If the strength requirement is not so big(50kg less bar）air pressure very good，also cheap.Four-cylinder in the hydraulic tension cylinder with fast speed up to 280mm/s,tensile strength up to 1000KN,BHF up 800KN，speed and pressure can be adjusted 个人收集整理 勿做商业用途 9 within the specified scope,the user can be required to pull extension speed and blank holder force selection to the best working condition,can be drawing a higher quality stainless steel and other products,is the ideal equipment for sheet drawing。The fourcolumn hydraulic press hydraulic chamber fuel injection system required to meet the requirements of hydraulic forming process，while the system is not too complicated.Its action as follows：motor starter，oil pump to flow back into the tank by the valve in place，pump unloading。When 1DT power,the oil through the valve,check valve into the grease board will be pressed into the sheet metal forming die and.In forming the end，1DT power，2DT power,oil and grease through the pressure cylinder into the boards role in the high pressure under the sheet to further close the die and forming the small fillet.The Four-column hydraulic press hydraulic system is the key converter 5 and the pressure cylinder 10.Hydroforming，according to the needs of technology,hydraulic system provides hydraulic pressure chamber to flow and pressure of work should be constantly changing，so the hydraulic system The power consumption should also be working with the work flow and pressure changes constantly changing本文为互联网收集,请勿用作商业用途个人收集整理，勿做商业用途 Before embarking on the analysis of pressure transient phenomena and the derivation of the appropriate wave equations,it will be usefull to describe the general mechanism of pressure propagation by reference to the events fllowing the instantaneous closure of a value postioned at the medlength point of a frictionless pipeline carrying fluid between two reservoirs.The two pipeline sections upstream and downstream of the value are identical in all respects。Transient pressure waves will be propagated in both pipes by valve operation and it will be assumed that rate of value closure precludes the use of rigid column theory。个人收集整理,勿做商业用途个人收集整理，勿做商业用途 As the valve is closed,so the fluide approaching its upstream face is retarded with a consequent compression of the flude and an expansion od the pipe cross-section。The increase in pressure at the valve results in a pressure wave being propagated upstream which conveys the retardation of flow to the column of fluid approaching the valve along the upstream pipeline.This pressure wave travels through the fluid at the appropriate sonic velocity，which will be shown to depend on the 个人收集整理 勿做商业用途 10 properties of the fluid and the pipe material.个人收集整理，勿做商业用途文档为个人收集整理,来源于网络 Similarly，on the downstream side of the valve the retarda
