内啮合齿轮泵组合式月牙板结构优化.pdfVIP

内啮合齿轮泵组合式月牙板结构优化

摘要：针对内啮合齿轮泵月牙板受力情况复杂，易发生断裂，且为高压内啮合齿轮泵中容易损伤失效的关键零部件，对组合式月牙

板进行受力分析。通过Solidworks软件建模，利用Pumpinx软件进行流场分析，得到在内啮合泵稳定工作状态下月牙板受力情况，并

得出齿轮啮合中心距越大，月牙板易弯折面面压力波动越小；第一间隙流场入口角度越大，间隙易弯折面受力越小；第一间隙流场入

口升程越小，间隙易弯折面受力越小；当第一间隙流场结构改为U形结构时，间隙易弯折面受力降低4.9%，能有效提高泵的使用寿

命，对高压化内啮合齿轮泵月牙板的设计及研究提供参考。

关键词：内啮合齿轮泵；月牙板；受力分析；结构优化

StructuralOptimizationofCombinedCrescentPlatefor

InternalGearPump

Abstract:Inviewofthecomplexstressconditionoftheinternalgearpumpcrescentplate,whichispronetobreakage,andisakeycomponent

thatispronetodamageandfailureinthehigh-pressureinternalgearpump,theforceanalysisofthecombinedcrescentplateiscarriedout.

ThroughSolidworkssoftwaremodeling,usingPumpinxsoftwaretoanalyzetheflowfield,theforceofthecrescentplateunderthestableworking

stateoftheinternalmeshingpumpisobtained,anditisconcludedthatthelargerthegearmeshingcenterdistance,thesmallerthepressure

fluctuationonthesurfaceofthecrescentplate;thefirstclearanceThegreatertheinletangleoftheflowfield,thegreatertheforceontheeasy-

bendingsurfaceofthegap;thegreatertheinletlift,thegreatertheforce;whentheflowfieldstructureofthefirstgapischangedtoa

U-shapedstructure,theforceontheeasy-bendingsurfaceofthegapdecreases.4.9%,whichcaneffectivelyimprovetheservicelifeofthe

pump,andprovideareferenceforthedesignandresearchofthecrescentplateofthehigh-pressureinternalgearpump.

Keywords:internalgearpump;crescentplate;forceanalysis;structuraloptimization

25MPa以上[2]。当前国内高压泵的研究多侧重于泵

0引言

的流量特性分析,而其中月牙板的结构研究较少，且故

内啮合齿轮泵在体积、价格、构造和抗油腐蚀等性障案例中又以月牙板失效占比较大，导致国产内啮合

能上有着一定的优势,因此广泛使用在液压系统中[1]