滚轮式脚踏式液压升降平台设计毕业设计英文翻译

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英文原文

Combine tool machine a slippery pedestal the research of the dynamic state

characteristic

【Summary】this text make use of power key to match diagram and appearance

space analyticalthe method hurtle and exercise a steady sex problem to carry on

analysis and study towards combining tool machine slip pedestal of ex-ly, the liquid

which builds up a slippery pedestalpresses to drive system a from adjust to carry on

the back to press to adjust soon dynamic statemathematics model of system.Pass a

calculator numeral to imitate really, hurtle and exercise notsteady reason and main

impact factor before analyzing a slippery pedestal a creation.From in get, if

reasonably design a liquid to press an urn with from adjust to carry on the back to

press toadjust structure size of press the valve, can make the dynamic state

characteristic of slipperypedestal shown a Zhao improvement.

One, preface

Combine a tool machine work in, the varieties which slip a size of sport speed

and direction andthe load bear all influence degree differently it work

function.Especially in the work enter theprocess.Slippery the on the stage load of

suddenly disappear causable of ex- hurtle and load ofthe period variety cause of the

sport gravamen be steady, all is processed the surface quality ofpiece the influence,

severity hour will cause the knife break.Request according to tool machinefactory in

Dalian, the author adopts power key to match diagram and the analytical method

establishment of the appearance space to combine the new liquid that the tool

machine slips apedestal to press to drive system a from adjust to carry on the back to

press to adjust soon dynamic state mathematics model of system.Pass a calculator

numeral to imitate really and study.Analytical slippery the pedestal produce ago hurtle

and exercise not steady reason and main impact factor, in order to improvement

slippery the dynamic state characteristic of pedestal.

Two, dynamic state mathematics model

The liquid which combines tool machine to slip a pedestal presses to drive

system a from adjustto carry on the back to press to adjust soon the work principle

diagram of system,such as diagram I, to show.That system is the work circulation

which uses to complete "the work enter a stop a back quickly".When slippery pedestal

work enter, 34 change to be placed in diagram to show a right toward the valve, the

oil pump of provide hydraulic-pneumatic dint under thefunction which over flows

valve look like ground to keep Heng settle, the oil's liquid flows through to change

toward the valve and adjust soon valve juniors into the oil urn of have no a pole

chamber, push slippery the set be left shift;In the meantime, oil urn the pressure oil

that if there is pole chamber, eject through from adjust to carry on the back to press

valve and change to flow to return to fuel tank toward the valve.In this process, two

one-way valves with overflowed to flow valve and always don't change original work

appearance.Object that system so of complications not line system, for the sake of

easy to study its dynamic state characteristic, build up a reasonable simple dynamic

state mathematics model which only emphasizes to consider main impact factor is

particularly important[1][2].Know from the theories the analysis with experiment the

research:That system of process time be soon that the process which is far larger than

to adjust valve is soonhorary, oil urn have no the pole chamber effectively accepts to

press area very greatly, adjust soon valve export discharge of super adjust a reflection

in a moment is slippery pedestal sport speed of the variety be pimping[2].For

openning widely and going deep into dynamic state characteristic of study the

system, make research work can on the microcomputer availably carry on, this text to

original model[2] do further simplification, on thesupposition that adjust soon the

valve outputs in the whole transition process of system Hengsettle of discharge, treat

it as to flow a source.So, the structure sketch plan of the dynamic state model of

system such as figure 2 show, it from oil urn, slippery set, carry on the back to press

valve and unite connector's road's etc. to constitute from the Diao.This text in use of

sign asfollows:

S 1-flow a source, then adjust soon valve export discharge;

Sel-the slippery set glide friction

C5, C6-the etc. effect liquid of tube road permit:

R5, R7-take care of an etc. of road effect liquid Zu;

V3, the V4-oil urn has no pole chamber and has a pole chamber the contents to

accumulate;

P3, the pressure which have no pole chamber and have a pole chamber of the P4-

oil urn

F-the slippery set bear a load,

V-slip a pedestal sport speed.The this literary grace hard working rate key

matches diagram and appearance space to fold a method establishment sport

mathematics model of the system for cent.

Power key's matching diagram is an effect to flow diagram, it is the energy

which presses system to deliver a way, take actual structure as foundation, the

function which uses concentration parameter the of sub- system relates to an abstract

earth's surface to show for the Zu a dollar Rand permits sex dollar C and sensitive

faculty dollar I of three kinds of function dollar.Adopt thiskind of method sets up a

mold physical concept clear, combine the appearance space analysis method can

compare to accurately describe with analysis line system, that method is in the hour

the area study complications the line system dynamic state characteristic not of a kind

of valid of method.

According to from adjust to carry on the back to press to adjust soon the main

characteristic ofeach component of system and set up mold rule[1], get figure 3 show

of the power key of system match diagram.Each half arrowhead on the key in diagram

means that the power fly to, 2 which constitute power change the quantity be a dint to

change to measure(hydraulic-pneumatic P or function dint F) and flow to change to

measure(discharge q or speed v).O crunode means in the system to belong to merge a

conjunction, each dint of key changes to measure equality but flows to change to

measure it with is zero;1 crunodes mean in the system to belong to establish a

conjunction, each key is upper-class to change to measure equality but dint to change

to measure it with is zero.TF means a different energy form the transformation

machine of, the TF bottom mark of the letter of alphabet mean that the dint changes to

measure or flows to change to measure of conversion specific value.The short and

horizontal Gang of key means that key ascend two change the cause and effect

between quantities relate to.The whole arrowheadses mean a control relation.Permit

the dint of sex dollar and sensitive faculty dollar to change to measure in three kinds

of function dollar and flow to change to measure it have integral calculus or

differential calculus relation, therefore, according to figure 3 can deduce to submit to

havenine complications that the appearances change to measure not the line

appearance square distance.This text to slippery pedestal the research of the dynamic

state characteristic from slippery pedestal of ex- hurtle and exercise steady sex both

side to commence, use four ranks certainly tread long Runge-Kutta method at IBM-

PC microcomputer up carry on numeral to imitate really, imitate a true result to

distinguish such as figure 4 with figure 5 show. Three, slip to hurtle before the

pedestal Slippery before the pedestal hurtle phenomenon is what function at slip the

load of on the stage suddenly disappeared( if drilled to deeply work circumstance)

cause.In this process, the variety which slips two chamber pressure P3s and P4 of the

load F, sport speed V, oil urn of pedestal can from the figure 4 imitate true result

see.When the slippery pedestal evenly and soon exercises under the function of the

load, the oil urn has no pole chamber oil liquid pressure higher.It came together a

great deal of energy in the oil liquid.While loading to suddenly disappear, that

chamber is hydraulic-pneumatic to immediately and quickly lower, the oil liquid turns

into the process of low-pressure Tai toward system to release a lot of energies from

the high pressure Tai and cause slippery pedestal the high speed pounds at

forward.However, slip a pedestal of ex- hurtle to make an oil urn to have a pole

chamber the oil liquid is press to cause to carry on the back to press to go up, thus the

depletion drop one part of energies in the system, to slippery pedestal of front blunt

certainly repress a function.Should see, in the system study, from adjust to carry on

the back entrance pressure of press the valve and be subjected to an oil urn two

chambers hydraulic-pneumatic comprehensive function.BE load a disappeared

moment, from adjust to carry on the back the pressure of press the valve quickly rises,

and stabilize the number which starts to carry on the back to press at the beginning in

the Gao up.From the diagram it is thus clear that, from adjust to carry on the back to

press to adjust soon the system is in a twinkling load to disappear oil urn carry the

range that the pressure go up on oil urn's back big in traditionally adjust soon system,

so, its oil urn energy which have the oil liquid in the pole chamber absorption

many;Result, slip a pedestal of ex- blunt the quantity adjusts system to soon want than

the tradition small be close to 20%.It is thus clear that adoption from adjust to carry

on the back a Chuang to adjust soon system conduct and actions to drive the slippery

pedestal of system to have good characteristic in the aspects of hurtling before

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摘要：

附录附录1英文原文Combinetoolmachineaslipperypedestaltheresearchofthedynamicstatecharacteristic【Summary】thistextmakeuseofpowerkeytomatchdiagramandappearancespaceanalyticalthemethodhurtleandexerciseasteadysexproblemtocarryonanalysisandstudytowardscombiningtoolmachineslippedestalofex-ly,theliquidwhichbuildsupa...

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