安徽理工大学:,,,,,:;;Abstract:Thispaperoutlinescurrentresearchsituationsofdomesticandforeigngearpumpsandpointsoutproblemswithexistinggearpumps.Thethreenewlydevelopedonesbytheauthorareintroduced,whichhaveindividualdistinguishedfeaturesbesidesremainingadvantagesofordinarygearpumps,andcanbewidelyusedinhydraulictransmissionsystems.Keywords:gearpumps;currentsituation;newresearchachievement,2,,;,,,,,,,,,1,,,:(1)[1~3];(2)[4~7];(3)[8~9];(4)[10~12];(5)[13];(6)[14];(7)[15];(8)[16~17];(9)[18~19];(10)[20~21],:(1);(2),2,,,2:(1);(2),PDM,PDM,PDM,,,PDM,,:169:116013112005(6);(3),221(),,(),25MPa,,22,(,)1,411,3516,,12,27,2311.2.3.4.5.6.7.,(),3,3(),,3(O1O2O3),3(P1P2P3)[22]:(1)z1=Nk+1(N,k),(2),,,(3)N,,23(,:59575010),2,,,1223,21.2.3.4.[23]:,,,243,1237819,,,2,,,122005(6)31.23.4.5.6.78.9.,,,,,,,,()[24],,1..,2003(3)2..,2003(5)3,..,1997(3)4..,2002(6)5,..,2002(4)6,..,2002(10)7..,1995(7)8..,2002(6)9,..,2001(4)10,..,2002(5)11,..,2002(5)12..,2002(1)13,..,2002(11)14..,2002(1)15,.BCB-B.,1998(5)16..,2002(3)17..,2002(2)18..,2003(2)19,..,1997(2)20,./.,2003(2)21,..,2003(6)22,..,2001(12),182023..:,200124..,2002(1)::232001:2004-06-11欢迎投稿,欢迎订阅,欢迎刊登广告!132005(6)