【摘要】：針對(duì)月面鉆取采樣裝置的回轉(zhuǎn)齒輪副嚙合熱進(jìn)行理論分析,依據(jù)輻射換熱定律建立了理論溫升模型;模擬實(shí)際月面真空、帶載工況并開(kāi)展試驗(yàn)研究。分析了嚙合熱在月面高真空環(huán)境的制約條件下,向機(jī)體外傳播的方式、傳熱途徑以及散發(fā)不暢時(shí)的積聚作用對(duì)附近運(yùn)動(dòng)副工作特性的影響。研究結(jié)果表明:回轉(zhuǎn)齒輪副作為鉆具驅(qū)動(dòng)單元?jiǎng)恿鬟f的中間環(huán)節(jié),在20 Nm負(fù)載轉(zhuǎn)矩工況下持續(xù)運(yùn)行40分鐘,理論預(yù)測(cè)最大溫升28.66℃,與試驗(yàn)測(cè)量的最大溫升結(jié)果 28℃相吻合,充分驗(yàn)證了鉆進(jìn)驅(qū)動(dòng)單元熱設(shè)計(jì)的正確性,準(zhǔn)確地識(shí)別出回轉(zhuǎn)齒輪副嚙合熱積聚的潛在風(fēng)險(xiǎn)。
[Abstract]:Based on the theoretical analysis of meshing heat of rotary gear pair with lunar drilling sampling device, the theoretical temperature rise model is established according to the law of radiation heat transfer, and the actual lunar surface vacuum is simulated and the experimental study is carried out. The influence of the mode of transmission of meshing heat in the high vacuum environment on the lunar surface, the way of heat transfer and the accumulation of heat transfer on the working characteristics of the motion pair in the vicinity are analyzed. The results show that the rotary gear pair, as the intermediate link of the power transfer of the driving unit of the drilling tool, runs continuously for 40 minutes under the load torque condition of 20 Nm, and the maximum temperature rise is predicted to be 28.66 鈩，

本文編號(hào)：2294325