低壓齒輪泵噪音分析與控制
本文選題:齒輪泵 切入點(diǎn):噪音 出處:《蘇州大學(xué)》2011年碩士論文
【摘要】:齒輪泵價(jià)格相對(duì)低且性?xún)r(jià)比高,在中低壓定量系統(tǒng)、潤(rùn)滑系統(tǒng)等領(lǐng)域獲得了廣泛認(rèn)可[1]。液壓齒輪泵正向著快響應(yīng)、小體積、低噪音、高壓化、大排量的方向發(fā)展。關(guān)于齒輪泵的噪音研究很多,可大多數(shù)都是針對(duì)卸荷槽、導(dǎo)流槽、潤(rùn)滑槽等流體壓力方面的考慮,而就齒輪的制造誤差產(chǎn)生的噪音的研究不是很多。 本論文主要以齒輪動(dòng)態(tài)模型為基礎(chǔ),以各種噪音實(shí)驗(yàn)(聲壓力、壓力波動(dòng)、加速度)為依據(jù),考慮各種制造誤差(包括:齒形、齒向、齒間距、節(jié)圓徑跳以及花鍵節(jié)圓徑跳),材料的不同等實(shí)際因素,通過(guò)針對(duì)嚙合時(shí)變剛度計(jì)算。得出由于誤差產(chǎn)生的提早進(jìn)入齒輪嚙合區(qū)的沖擊振動(dòng)。最后將振動(dòng)轉(zhuǎn)化為加速度,這樣對(duì)噪音的問(wèn)題歸結(jié)為對(duì)振動(dòng)的分析,以解決目前遇到的問(wèn)題。同時(shí),給出相應(yīng)的齒輪制造精度要求,以及花鍵連接徑跳要求。 研究結(jié)果表明:(1)齒輪的精度對(duì)噪音振動(dòng)時(shí)有影響的,但實(shí)際不大;(2)更多的噪音振動(dòng)不是來(lái)自于齒輪精度本身,而是諸如連接誤差、工藝缺陷、國(guó)內(nèi)工藝能力不足引起的。本文遇到的問(wèn)題就是因?yàn)閮?nèi)花鍵徑跳超差產(chǎn)生;(3)通過(guò)計(jì)算,在現(xiàn)有能力的情況下,通過(guò)對(duì)有限度的提高工藝能力,同時(shí)在其他方面提高要求,來(lái)降低噪音水平。如花鍵徑跳從0.2mm提高到0.12mm;適時(shí)的提高齒面精度,以減小摩擦振動(dòng)。通過(guò)努力,最后和進(jìn)口齒輪的噪音只有1到2分貝的差距;
[Abstract]:Gear pump has been widely accepted in the fields of medium and low pressure quantitative system, lubrication system and so on because of its low price and low cost. Hydraulic gear pump is facing fast response, small volume, low noise, high pressure, etc. There are many researches on the noise of gear pump, but most of them are based on the fluid pressure, such as unloading slot, flow guide groove and lubricating groove, but the noise caused by the manufacturing error of gear is not much studied. In this paper, based on the dynamic model of gear, based on various noise experiments (acoustic pressure, pressure fluctuation, acceleration), various manufacturing errors (including tooth profile, tooth direction, tooth spacing) are considered. In view of the different practical factors of the material, the nodal circular diameters and spline nodal diameters are calculated according to the time-varying stiffness of the meshing. The shock vibration which enters the gear meshing area early due to the error is obtained. Finally, the vibration is transformed into acceleration. In this way, the noise problem is reduced to the analysis of vibration to solve the problems encountered at present. At the same time, the requirements of gear manufacturing accuracy and spline connection diameter-slip are given. The results show that the accuracy of gear has an effect on the noise vibration, but in practice, more noise vibration does not come from the gear precision itself, but rather from the connection error and technological defects. The problem encountered in this paper is that the internal splines' diameter-skip overshoot is produced by calculating, in the case of the existing capacity, by raising the technological capacity to a limited extent, and at the same time raising the requirements in other aspects. To reduce the noise level, such as the spline diameter jump from 0.2mm to 0.12mm; to improve the tooth surface accuracy in time to reduce friction vibration. Through efforts, the final noise and imported gear noise only 1 to 2 decibels gap;
【學(xué)位授予單位】:蘇州大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2011
【分類(lèi)號(hào)】:TB535;TH325
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