ScienceDirect. Power Analysis of an Axial Piston Hydraulic Machine of Power- Intensive Hydraulic Drive System

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1 Available online at ScienceDirect Procedia Engineering 69 ( 2014 ) th DAAAM International Syoiu on Intelligent Manuacturing and Autoation, 2013 Power Analyi o an Axial Piton Hydraulic Machine o Power- Intenive Hydraulic Drive Syte Ilya Larchikov*, Andrey Yurov, Sergey Stazhkov, Anataia Grigorieva, Alena Protuk 6 th Kranoareykaya tr.10-21, , St.-Peterburg, Ruia Abtract Technical characteritic o oitive-dilaceent hydraulic achine deterine the roect o increaed alication or known oitive roertie o oitive-dilaceent hydraulic drive to irove achine o odern technologie erorance characteritic. In return, an alication o oitive-dilaceent hydraulic drive i being retrained with coaratively high value o a tart and revere inert zone and, a a conequence, coaratively low eed adjutent range. That i reulting ro voluetric and echanical high level loe coried hydraulic achine. For reoval o diadvantage, earching a new hydraulic otor tructural diagra hould be done The Author. Publihed by Elevier Ltd The Author. Publihed by Elevier Ltd. Oen acce under CC BY-NC-ND licene. Selection and eer-review under reonibility o DAAAM International Vienna. Selection and eer-review under reonibility o DAAAM International Vienna Keyword: Mechatronic; hydraulic; ower drive 1. Introduction Technical characteritic o oitive-dilaceent hydraulic achine deterine the roect o increaed alication or known oitive roertie o oitive-dilaceent hydraulic drive to irove achine o odern technologie erorance characteritic. The oitive-dilaceent hydraulic drive ha wide and varied range o alication in odern technology. Traditionally, hydraulic drive i alied where the at reone, raidity, all dienion, large tranitted ower and autoated control are required. * Correonding author. Tel.: E-ail addre: ilyalar@ail.ru The Author. Publihed by Elevier Ltd. Oen acce under CC BY-NC-ND licene. Selection and eer-review under reonibility o DAAAM International Vienna doi: /j.roeng

2 Ilya Larchikov et al. / Procedia Engineering 69 ( 2014 ) The throttle control o high-ower hydraulic drive i liited due to the low eiciency o a control roce. In return, an alication o oitive-dilaceent hydraulic drive i being retrained with coaratively high value o a tart and revere inert zone and, a a conequence, coaratively low eed adjutent range. That i reulting ro voluetric and echanical high level loe coried hydraulic achine. In recent tie ore advanced oitive-dilaceent hydraulic drive are being contructed. Thi ake range o alication to be extended in technology. Global exerience in the ield o oitive-dilaceent hydraulic drive allow aigning o two the ot revalent tye o oitive-dilaceent achine. Thee achine ay be conidered to be the bae or engineering ower-conuing drive with continuou loading condition. Thee are: Bent axi hydraulic achine (BAH) Swahlate hydraulic achine (SWH) The hydraulic achine with a bent axi (BAH) have coaratively low voluetric and echanical level loe. A a conequence, reduced value o the tart and revere inert zone and increaed adjutent range are occurred. The hydraulic achine with wah late (SWH) are ore ower-conuing, their dynaic and overall roertie are higher. Stated below reearch reult and ractical recoendation reer to the wahlate hydraulic achine. Thee achine are rojected under a tructural layout o widely known Sauer hydraulic achine tye. Given tye o hydraulic achine i very roiing. Priarily, becaue o the oibility o level oerating reure orcing. Baic contruction o wahlate hydraulic achine i being contantly iroved and ha uered change in recent year. That i allowed along with a iliication to increae level liit o oerating reure and to extend teerature an and range o regulation. The ain deign concet ground on alication o hydrotatic unloaded lide bearing. Now thi concet i till unchanged. Thee hydraulic achine ather develoent ay be concentrate on reure orcing, a alo exanion o regulation range. Thi i oible a a iniu level o teady rotation requency ay be reduced. Fundaentally, hybrid lider bearing ha high alternative in deign develoent. The roble i to ake deign actor o lider bearing to eet the requireent o the oerating condition and external loading the bet. That i why the colete reearche o hydroechanical rocee in hybrid bearing o the wahlate hydraulic achine are neceary. The reearch reult ay be ued or aeent o orced work ode, correct orecating o loe and inding way to reduce the loe. Invetigation o iton arrangeent how, that hydrootor have high iniu level o teady rotation requency at the tart under the load. The reaon or that i an interace eal leak u to the breaking orce. That i due to the igniicant riction load o iton echani beore otion tart. Becaue o the tated above eature o wahlate hydraulic otor, the inert zone o oitivedilaceent drive increae areciably. The value o zone goe u then the oerating reure doe. Here the inert zone hall be undertood to ean a range o inclination o u wah late, by which hydraulic otor hat i ixed. Thi deerit i evident eecially in the revere ode and during the tart under the load. By increaing inert zone the ooth running characteritic and accuracy o regulation roce uer. For reoval o diadvantage, earching a new hydraulic otor tructural diagra hould be done. The diagra ha to ave deign and energy characteritic o the wahlate hydraulic achine. But alternatively, hould irove orce cloure o the ain art, roviding reduction o uericial riction actor in a iton block.

3 514 Ilya Larchikov et al. / Procedia Engineering 69 ( 2014 ) Develoent a orce diagra o running gear SWH and reducing riction orce in running gear iultaneouly allow to olve hydraulic drive current roble concerning with reure orcing and rotation requency or achine, oerating in condition o hort-ter overload. A can be een ro the above, reearche or deigning ethod o coutation and contruction o ower-conuing axial iton hydraulic achine with high at reone and raidity are extreely relevant. 2. Reearch An idea o reearching involve theoretically and exerientally integrated aroach. The ubject i hydroechanical rocee in ain kineatic air o SWH inluenced with unettled work kineatic o hydraulic achine running gear. In addition it i neceary to deterine and tudy interaction o ain eber o SWH variable tructure echani, eeting urace o whoe are divided with oil il; to deine condition that ake tye o riction change; to ound a choice o oeration condition, orecating caabilitie o voluetric and hydroechanical loe, uing an orced oeration condition, along with earching the new tructural diagra and contruction that would irove characteritic o given tye hydraulic achine [2]. For thee uroe have been done: Structural, kineatic and ower analyi o SWH echani. The hydraulic drive wa conidered to be o variable tructure a to deine oible tructure diagra, requireent o it ileentation and converion Analyi o SWH kineatic air oeration in liquid riction in a wide range o teerature, velocity and reure Analyi o SWH iton block oeration in boundary and ixed riction Analyi o tructural diagra and contruction o ain eber o SWH that are rovide liquid riction and low voluetric loe during the zero and cree eed Analyi o reure orced SWH For tructural diagra analyi and yteatization o running gear atial echani o the wahlate hydraulic achine or dierent ode and condition o it oeration the ain ethod o echani and achine tructural analyi were racticed. Power analyi o iton echani wa ade baing on the ethod o uericial riction actor coutation and other tribological characteritic. For atheatical odel deign o hydroechanical rocee in kineatic air o hydraulic achine running gear wa ued N. A. Slezkin ethod. For nuerical olution wa ued one o the ot eicient nuerical ethod or olution ellitic equation - the relaxation ethod. Exeriental reearche were ade with ecially deigned tet-bench equient and baed on the inverion ethod o ain oberved eber o hydraulic achine running gear. A a reult o SWH running gear echani tudying (echani wa conidered to be o variable tructure, deending on condition and ode o drive alication) the ethodology o tructural analyi, ynthei and tructural claiication o echani wa engineered; dierent ode and condition o drive alication tructural diagra were invetigated. Given ethodology o tructural analyi and ynthei i an evolution o Aur ethod, wa ued or atial echani analyi. The next te o invetigation wa dedicated to analyi o icrokineatic ecial eature o SWH variable tructure echani. They deend on condition and ode o alication. The kineatic o ain cycle o oeration and the one or echani with redundant degree o reedo were tudied. Cycle o oeration i a cycle, by which echani oerate a the irt degree echani doe (without involving a aive link). A ecial ocu wa on icrokineatic invetigation relatively hiting o eeting urace o hydraulic achine running gear within the ga illed with a working luid. Baed on analyi

4 Ilya Larchikov et al. / Procedia Engineering 69 ( 2014 ) o a acro- and icrokineatic o eeting urace relatively hiting, the atheatical relation o every kineatic air o SWH running gear were derived. Thee are a oundation or creating a atheatical odel o hydroechanical rocee in ga or liquid riction. Fig. 1. Force roile in uing ode o SWH. Fig. 2. Force roile in otor ode o SWH.

5 516 Ilya Larchikov et al. / Procedia Engineering 69 ( 2014 ) Power analyi Baed on ower analyi (Fig. 1, 2) the relation or riction orce coutation in iton air were derived or hydraulic achine oerated in uing and otor ode in wide variety condition o alication, including the extree one. T F 1 1 tg (1) T F 1 1 tg (2) where: 2 ab 2r ca ab 2ca ab 2r ab c c 2 2 (3) (4) and where: r rc d are uericial riction actor in otor and uing ode reectively; c п d п (5) - coeicient riction in iton - cylinder unit (PCU), l ca - iton extenion ( ditance between center o iton herical joint and airlead buh external urace) l ab - length o airlead buh r C - center o iton herical joint hit relative to iton longitudinal axi - wah late dilaceent angle F P - axial orce oerated uon a iton d - iton diaeter п

6 Ilya Larchikov et al. / Procedia Engineering 69 ( 2014 ) Thi relation between tangential and axial coonent o riction PCU deending on SWH ode o alication, reult o exeriental reearch and energy characteritic o PCU the ain ource o echanical loe - were a bai or ather calculation. That i allowed to deterine bound or variation o deign actor range o SWH running gear echani whereby a locking o kineatic air i ruled out. By uing the ethod o theoretical hydroechanic wa ound a olution or roble o hybrid loading caacity or bearing urace o running gear echani eber o hydraulic achine. The atheatical odel o hydroechanical rocee in arbitrary haed ga that divide the urace o kineatic air are given below. They were derived by uing the bae o reearch reult o eeting urace relatively hiting o running gear eber o hydraulic achine. The coutation were baed one o the ot eicient nuerical ethod or olution ellitic equation - the relaxation ethod. The reult are the reure roile in kineatic air ga o SWH running gear. The roile deend on characteritic that identiy a hae o ga, eed o relative oveent o eeting urace o link and alo vicoity o hydraulic luid. The nature o reult, which were derived by ean o calculation, erectly well correond with H. Regenbogen roile [1], which wa a reult o exerience with the ae characteritic o ga, eed and teerature. A diarrangeent o axiu value or reure in both relation i no ore than 10%. 3. Concluion A a reult, were derived the relation or load bearing and ower (lo o ower, coeicient o erorance) characteritic or kineatic air o hydraulic achine running gear in under graded oeration. The echanical lo evaluation allow to aert that in thi cae the kineatic air o hydraulic achine running gear echani are otly oerated in liquid riction. Mentioned characteritic that were derived by integrating the ield o reure in ga o kineatic air ake oible to elaborate recoendation at the deign tage or chooing the ize and deign or ain ounting urace o echani running gear eber. That allow to exand the range o alication ode o hydraulic achine wherein the kineatic air are in liquid riction. Reerence [1] Regenbogen H. (1978) Da Reibungverhalten von Kolben und Zylinder in hydrotatichen Axialkolbenachinen. - VDI - Forchunghet. [2] Kanarchuk, V. (2008). Durability and engine wear under dynaic oerating condition, Naukova Duka, Kiev. [3] Kitochkin E. (2007). Voluetric hydroechanical traniion. Calculation and deign, Mahinotroenie, St.-Peterburg. [4] Mikhaylov, M.; Larchikov, I.; Yurov, A.; Cvetkov, V. & Stazhkov, S. (2011). Hydroechanical contant eed drive orwind-driven generator, Proceeding o the 22 nd International DAAAM Syoiu, Katalinic, B. (Ed.), , ISBN , Autria Center Vienna, Vienna, Autria, October 2011, DAAAM International Vienna, Vienna. [5] Larchikov, I.; Stazhkov, S.; Mikhaylov, M.; Yurov, A. & Cvetkov, V. (2011). Study o Hydro Mechanical Procee in Hydro Machine o Power-Intenive Drive, Proceeding o the 22 nd International DAAAM Syoiu, Katalinic, B. (Ed.), , ISBN , Autria Center Vienna, Vienna, Autria, October 2011, DAAAM International Vienna, Vienna.