【正文】 7 22nd mz? 由表 24 取 ? 2 mm? mm? 14 1339。P=1 3= 根據(jù) 1n 、 cP 查表和圖 6－ 8，選取 Z 型帶 確定帶輪基準(zhǔn)直徑、驗(yàn)算帶速 查資料表 6－ 5， 6－ 6，選取 1 80d mmd ? 帶速帶速驗(yàn)算： V=n1（ d1+d2） （ 80+240） ≤0a ≤2（ 80+240） 176mm≤0a ≤640mm 10 初定中心距 0a =600 ，則帶長(zhǎng)為 L0=2 LK K? =（ +） = 故要取 6 根 Z 型 V 帶 滿足少于 8 根的要求。 N mm? 合成彎矩 39。 3 8 4 3 5 .7HCM N m m?? 39。39。 計(jì)算項(xiàng)目 計(jì)算內(nèi)容 計(jì)算結(jié)果 （ 1） 高速軸與 帶輪 連接鍵的選擇和校核 鍵的選擇和參數(shù) 靜聯(lián)接，選用普通平鍵 A 型， b*h=10*8 b*h=10*8 鍵長(zhǎng) 取 L=60mm L=60mm 許用擠壓應(yīng)力 校 核 查表可得 45 號(hào)鋼的許用擠壓應(yīng)力為 p? = lhFt` = hldTI4000 =? ?p? 滿足要求 （ 2） 低速軸與 聯(lián)軸器 連接鍵的選擇和校核 鍵的選擇和參數(shù) 靜聯(lián)接，選用普通平鍵 A 型， b*h=10*8 b*h=10*8 鍵長(zhǎng) 取 L=60mm L=60mm 許用擠壓應(yīng)力 校 核 查表可得 45 號(hào)鋼的許用擠壓應(yīng)力為 p? = lhFt` = hldTI4000 =? ?p? 滿足要求 （ 3） 低速軸與閉式大齒輪連接鍵的選擇和校核 鍵的選擇和參數(shù) 靜聯(lián)接，選用普通平鍵 A 型， b*h=16*10 b*h=16*10 鍵長(zhǎng) 取 L=70mm L=70mm 許用擠壓應(yīng)力 校 核 查表可得 45 號(hào)鋼的許用擠壓應(yīng)力為 p? = lhFt` = hldTI4000 =? ?p? 滿足要求 聯(lián)軸器的選擇 19 由于減速器載荷平穩(wěn)，速度不高，無(wú)特殊 要求，考慮裝拆方便及經(jīng)濟(jì)問(wèn)題，根據(jù) 低速 軸連接聯(lián)軸器處 d=32mm，選用 LX1 型 彈性 柱銷聯(lián)軸器 ， 將各種參數(shù)列表如下： 型號(hào) 公稱轉(zhuǎn)矩 許用轉(zhuǎn)數(shù) 軸孔直徑 軸孔長(zhǎng)度 外徑 軸孔類型 LX2 560 6300 32 82 120 Y 型 聯(lián)軸器承受轉(zhuǎn)矩 9 5 5 0 1 1 0 . 3 2 5 6 0KPT N m N mn? ? ? 聯(lián)軸器合適 第九章 潤(rùn)滑的選擇 減速器中的一級(jí)閉式減速齒輪 ,由于齒輪外緣的回轉(zhuǎn)速度小于 12m/s，因此采用浸油潤(rùn)滑，選用 LAN68 全損耗系統(tǒng)用油 ,浸油深度應(yīng)沒(méi)過(guò)至少 1 個(gè)齒高，一般 不應(yīng)小于 10mm。本設(shè) 計(jì)中：（ 1）由于密封界面的相對(duì)速度不是很大，采用接觸式密封，高速軸與軸承蓋間 V 3m/s，采用半粗羊毛氈封油圈，低速軸與軸承蓋間也為 V 3m/s，故采用半粗羊毛氈封油圈。 ③ 軸 承部位油脂的填入量要小于其所在軸承腔空間的 2/3。 ⑥ 對(duì)箱蓋與底座結(jié)合面禁用墊片，必要時(shí)可涂酒精漆片或水玻璃。 空載實(shí)驗(yàn)：在額定轉(zhuǎn)速下正反轉(zhuǎn)各 1～ 2 小時(shí)，要求運(yùn)轉(zhuǎn)平穩(wěn)、聲響均勻、各聯(lián)接件密封處不 得有漏油現(xiàn)象。箱蓋上的吊環(huán)僅可用與起吊箱蓋。t agree with the disciplinary action your employer has taken against you your employer dismisses you and you think that you have been dismissed unfairly. For more informu, take advice from one of the anisations listed under Further help. Employment tribunals are less formal than some other courts, but it is still a legal process and you will need to give evidence under an oath or affirmation. Most people find making a claim to an employment tribunal challenging. If you are thinking about making a claim to an employment tribunal, you should get help straight away from one of the anisations listed under Further help. ation about dismissal and unfair dismissal, see Dismissal. You can make a claim to an employment tribunal, even if you haven39。s antiracism taskforce, is in London for the Football Association39。s 21 win. Michel Platini, president of European football39。 May be back in the past, to oneself the paranoid weird belief disillusionment, these days, my mind has been very messy, in my mind constantly. Always feel oneself should go to do something, or write something. Twenty years of life trajectory deeply shallow, suddenly feel something, do it. 一字開(kāi)頭的年齡已經(jīng)到了尾聲。 The end of our life, and can meet many things really do? 而窮盡我們的一生，又能遇到多少事情是真正地非做不可？ During my childhood, think lucky money and new clothes are necessary for New Year, but as the advance of the age, will be more and more found that those things are optional。t want to give vent to out your inner voice can be in the high school children of the feelings in a period, but was eventually infarction when graduation party in the throat, later again stood on the pitch he has sweat profusely, looked at his thrown a basketball hoops, suddenly found himself has already can39。s time, your ideas are always special to clear. Want, want, line is clear, as if nothing could shake his. Also once seemed to be determined to do something, but more often is he backed out at last. Dislike his cowardice, finally found that there are a lot of love, there are a lot of miss, like shadow really have been doomed. Those who do, just green years oneself give oneself an arm injection, or is a selfrighteous spiritual. 一個(gè)人的時(shí)候，自己的想法總是特別地清晰。那些曾經(jīng)所謂的非做不可，只是青蔥年華里自己給自己注射的一支強(qiáng)心劑，或者 說(shuō)，是自以為是的精神寄托罷了。 Have declared the end of the encounter that haven39。 instead of letting the world soften us, we let it drive us deeper into ourselves. We try to deflect the hurt and pain by pretending it doesn’t exist, but although we can try this all we want, in the end, we can’t hide from ourselves. We need to learn to open our hearts to the potentials of life and let the world soften us. 生活發(fā)生不幸時(shí)，我們常常會(huì)關(guān)上心門；世界不僅沒(méi)能慰藉我們，反倒使我們更加消沉。 Whenever a painful situation arises in your life, try to embrace it instead of running away or trying to mask the hurt. When the sadness strikes, take a deep breath and lean into it. When we run away from sadness that’s unfolding in our lives, it gets stronger and more real. We take an emotion that’s fleeting and make it a solid event, instead of something that passes through us. 25 當(dāng)生活中出現(xiàn)痛苦的事情時(shí)，別再逃跑或隱藏痛苦，試著擁抱它吧；當(dāng)悲傷來(lái)襲時(shí)，試著深呼吸，然后直面它。其實(shí)，我們有能力面對(duì)這些痛苦的感受，從中領(lǐng)悟到出路。與其一味顧慮重重，不如從局外人的角度看待決策之事。t. Baumgartner still will free fall at a speed that would cause you and me to pass out, and no parachute is guaranteed to work higher than 25,000 feet (7,620 meters). cause there