Research On Energy-saving Technique Of Loader Work Installment Hydraulic System

Loader is a kind of high efficiency, wide use machine。It is apply inextensively in the engineering, such as building, mineral mountain, railroad,highway, electricity of water, port, the farmland capital construction and nationaldefense...etc., it has important function to reduce the labor intensity of drivers,quicken the working speed of engineering constructs, improve engineering quality,Whether at domestic or international, loader develop in variety and quantity at ahigh speed, it is one of the important engineering machine, compose of powertransmission system, stepped device, work equipment, turnaround braking system,hydraulic system and manipulate system .Its hydraulic system include the workdevice hydraulic system , turnaround hydraulic system and gear-box hydraulicsystem in generally. Loader's hydraulic system will make oil to high temperature inusing process. According to research, loader oil's exorbitant temperature is a mainfactor to affect reliability of system and component and the work efficiency. so howto ensure loader's hydraulic system work in natural is a key to ensure loader workin natural.In loader, hydraulic system use oil as a medium in order to achieve the powertransition. According Bernoulli equation when liquid is flowing, because ofglutinosity it will cause power losing, reduce efficiency of system. In the pressureoil road that the hydraulic system, because pressure is far larger than kinetic energyand potential energy, the lost power is pressure losing. The losing of hydraulicsystem on the one hand make efficiency of system low, on the other hand the losingpower will translate to heat energy, make the oil' temperature higher, and makedevice fault. But former processing method of the hot equilibrium problem ofhydraulic system is just concentrate on how to raise hot spread effect, have noresearch the reason of fever creation, by this meaning, study the reason of fevercreation and reduce the fever creation and make reasonable hydraulic system,reducing the energy loss, is active way of resolves the fever the problem ofhydraulic system.This text make a analysis of power losing of hydraulic system of loader'swork device , it found the reason of power losing and point which part haveproblems。According to this problem we improve those parts and make a lot ofanalysis and tests and make compare with primary system, At last, it conclude thefeasibility of improved system.This text is divided to five chapters:Chapter 1, it introduces to loader's development trend in domestic andinternational, generalize the order and important meaning of economy energy ofhydraulic system .at the point of purpose and meanings of economy energy, weintroduced the source and an articles topic of this contents.Chapter 2, it made a detailed introduction towards arm work systemimprovement, first we analyzed the reason of energy losing in work. Then, weanalyzed the losing of the pressure of the original system, particularly made a detailanalysis of the oil loss which passed through multi-valve. We also make a lot ofimprovement aim at the original system , through analyzing energy loss of newsystem and carry on two systems comparison, we make a conclusion that the newsystem make less loss pressure power than original system, and then through theanalysis to speed of descend, get improve the reliability of system.Chapter 3 , accumulator replaces the forerunner pump as forerunnersystem ,first introduce the principle and structure of original system, , and pointedthe weakness, then put the forward with the new system of the accumulator, andintroduced the principle structure, point out advantage of use accumulator asforerunner oil source , through the work principle of decompression valve ,and thenthrough from accumulator to the cavity analyzing hydraulic system , and getfunction relation, and through function conclude possibility of accumulator as firstsystem provide the oil.Chapter 4 make a detailed introduction towards economy energy analysis ofloader work pump, first analysis the work principle of the original system, from theprocess of analysis , found out the unreasonableness of lose energy of high ratio oforiginal system , then put forward the necessity of the improve system, and thenaim at the original system designed reasonable system, introduced the workprinciple of the improvement system, through the analysis, get advantage of theimprovement economy energy system, and then through experiment curve,compared with new and original systems, and we gets, although the improvementsystem has the variety of the discharge in the process of double pump confluenceand reposition of redundant personnel, bur it did not affect stability of loader, thenew system is stable.Chapter 5 Conclusion, this text through improving a few unreasonablepositions of hydraulic system, coming to a purpose of economy energy andpromoting hot balance, make a meaningful trial of developing more economyenergy loader next step.