【正文】
第 5章 前后滾筒 . 軸承的計(jì)算 17 軸承類型:深溝球軸承,軸承代號: 6301 軸承參數(shù):軸承內(nèi)徑: 12,軸承外徑: 37,軸承寬度: 12,額定動載荷: 7480,額定靜載荷: 4650,極限轉(zhuǎn)速: 22020, 潤滑方式:脂潤滑。 —— 為使軸上零件易于安裝,軸端和各軸段的端部應(yīng)有導(dǎo)角 — — 軸的形狀和尺寸力求簡單,以便于加工 —— 軸上磨削的軸段有砂輪越程槽;需車制螺紋的軸段,應(yīng)有推刀槽; 軸的材料 軸常在交變應(yīng)力的作用下工作,其材料的要求是:強(qiáng)度高、剛度好、應(yīng)力集中的敏感度小,抗疲勞,加工性能好,有的軸表面要求也較高。 18 軸的設(shè)計(jì)包括兩個方面: * 結(jié)構(gòu)設(shè)計(jì):使軸具有合理的結(jié)構(gòu)形狀,良好的加工工藝性。 軸上零件的固定可分為兩個方向: 周向固定:傳遞扭矩和運(yùn)動。所以 固定心軸的許用應(yīng)力應(yīng)為 [σ 1] 。滾筒均有防靜電處理。導(dǎo)電耐磨層既可長期承受跑步帶的摩擦,使用壽命高;又可隨時將摩擦產(chǎn)生的靜電 荷通過底座導(dǎo)出,避免靜電對人體的不舒感和對跑步機(jī)造成的損害。復(fù)合耐磨金屬板則更牢固。有不少 廠商 生 產(chǎn) 加 碼 跑步 機(jī) ,跑臺加 寬 ,左右踏 條 增大,以營 造物超所值得 虛 胖假象,但最重要的跑步 帶 面 積并沒 增加;所以 焦點(diǎn) 要放在跑步 帶面 積 上。勿 過 度 鎖緊 跑 帶 。使用六角螺 母扳 手,以反 時針方向旋 轉(zhuǎn) 跑臺左 后側(cè) 的滾筒 調(diào)整 螺栓四分之一 轉(zhuǎn) , 還 有以 順時針 方向旋 轉(zhuǎn) 跑臺右 后側(cè)的滾筒 調(diào) 整螺栓四分之一 轉(zhuǎn) 。 22 圖 62 跑帶左右偏調(diào)整方式 要增加跑 帶 的 張 力 時 ,先取出 鑰匙 ,拔下 電源 插 頭 。完成 后 ,插入跑步 機(jī) 的 電源插 頭與鑰匙 , 讓 跑 帶運(yùn)轉(zhuǎn)幾 分 種 。跑帶 張 力 適當(dāng)時 , 應(yīng)該 可以將 跑 帶 的任何一 邊 移 離 跑臺 34。 圖 63 跑帶張力大小調(diào)整方式 . 跑臺潤滑油的填加 減小跑步帶和跑步板之間的摩檫力,保護(hù)跑步板表面的耐磨涂層,延長跑帶、跑板的使用壽命。 黏度高。 將跑步機(jī)通電運(yùn)轉(zhuǎn)在 3 KM / H 以內(nèi),人站上去隨著跑步帶一起運(yùn)動,用腳有意識的踏壓跑步帶下涂有潤滑油的區(qū)域,使其在跑步板上散布均勻。使用跑步 機(jī) 比起在 戶 外路跑最大的好 處 是:跑步 機(jī) 它提供了避震效果,大量消除每一步伐的反作用 沖擊 力,保 護(hù) 了膝 蓋關(guān)節(jié) 。 現(xiàn)在高級跑步機(jī)的最大賣點(diǎn)之一就是避震系統(tǒng),所以設(shè)計(jì)和改進(jìn)跑步機(jī)避震系統(tǒng)首當(dāng)其沖,是設(shè)計(jì)思路和技術(shù)攻克的重點(diǎn)。高檔跑步機(jī)可以根據(jù)體重自動調(diào)節(jié)減震系數(shù)。 ④通過磁療,把磁波傳列到人體,在細(xì)胞內(nèi)發(fā)生旋渦狀的二次電流,排除多余脂肪及毒素。 單向推力軸承計(jì)算: 軸承類型: 單向推力球軸承 (50000),軸承代號: 51104 軸承參數(shù):軸承內(nèi)徑: 20,軸承外徑: 35,軸承寬度: 10,額定動載荷: 11000,額定靜載荷: 19800, 極限轉(zhuǎn)速: 6700,潤滑方式:脂潤滑 工作參數(shù) :徑向載荷: 0,軸向載荷: 1000,使用壽命: 3000,工作轉(zhuǎn)速: 20,載荷系數(shù): 計(jì)算結(jié)果:當(dāng)量動載荷: ,當(dāng)量靜載荷: ,計(jì)算壽命: 833350 深溝球軸承只是簡單起個軸向固定和保持軸位置的固定的作用。 30 第 9章 使用和維護(hù) . 跑步機(jī)的維護(hù)與保養(yǎng) 在您第一次或定期使用 本電動跑步機(jī)時,請用潤滑劑涂在跑步帶的內(nèi)表面,以減少相互間的磨擦阻力,減輕電動機(jī)的負(fù)荷。 . 如何使用跑步機(jī) 1 在練習(xí)跑步機(jī)之前,準(zhǔn)備活動比較簡單,主要做一些腿部肌肉、關(guān)節(jié)的準(zhǔn)備活動就可以了,比如側(cè)壓腿、活動腳腕等。 (3)不要在跑步機(jī)上進(jìn)行倒走練習(xí)。 (7)練習(xí)跑步機(jī)不是一兩天就能看見練習(xí)效果的,要配合其他的戶外有氧鍛煉,在平時要注意減少高油脂食物的攝入量,吸煙的朋友要在練習(xí)期間減少吸煙的次數(shù)。超負(fù)荷鍛煉 ,必須全神貫注 ,全力以赴 ,亂開玩笑會轉(zhuǎn)移運(yùn)動者的注意力或因發(fā)笑泄氣 ,破壞運(yùn)動節(jié)奏。 32 致謝 漫長的設(shè)計(jì)接近了尾聲,從開始的迷茫到現(xiàn)在的任務(wù)的完成。 在收集資料的過程中,只要是對自己有幫助的就收藏起來,一幅圖,一句話都不放過,發(fā)現(xiàn)一點(diǎn)點(diǎn)有幫助的知識點(diǎn),欣喜半天,慢慢堅(jiān)定了自己要完成設(shè)計(jì)任務(wù)的信心,終于在一幅圖上發(fā)現(xiàn)了自己想要的東西,很快的很多工作可以展開了思路,在主要數(shù)據(jù)反復(fù)計(jì)算完成后,確定了自己的方案。 建模過程占據(jù)了設(shè)計(jì)的大部分時間和經(jīng)歷,有些零件反反復(fù)復(fù)很多次,在無法完成的情況下,只好再去各大商場去調(diào)研,有了前面的工作,接下來的調(diào)研顯的收獲很大,使自己越來越專注于自己的設(shè)計(jì),感覺每個數(shù)據(jù),每個零件特征的繪制都流淌著自己的血。北京:機(jī)械工業(yè)出版社, 2020 [2] 鄒慧君主編 .機(jī)械原理 .北京 .高等教育出版社, 1999 [3] 申永勝主編 .機(jī)械原理教程 .北京 .清華大學(xué)出版社, 1999 [4] 張偉社主編 .機(jī)械原理 .西北工業(yè)大學(xué)出版社, 2020 [5] 鄒慧君主編 .機(jī)械原理課程設(shè)計(jì)手冊 .高等教育出版社, 1998 [6] 趙松年主編 .現(xiàn)代機(jī)械創(chuàng)新產(chǎn)品分析與設(shè)計(jì), 2020 [7] 楊家軍主編 .機(jī)械系統(tǒng)創(chuàng)新設(shè)計(jì) .華中理工大學(xué)出版社, 2020 [8] 張春林主編 .機(jī)械創(chuàng)新設(shè)計(jì) .機(jī)械工業(yè) 出版社, 1999 [9] 機(jī)械設(shè)計(jì)手冊編委會 . 機(jī)械設(shè)計(jì)手冊新版 2, 3 卷 , 機(jī)械 工業(yè)出版社 , 2020 [10] 卜炎主編 .機(jī)械傳動裝置設(shè)計(jì)手冊(上冊),機(jī)械 工業(yè)出版社 。t gather together the auspicious brand race apparatus not electronic in in, sales volumes of small city chase there aren39。s super exhibition, the sample was just a exhibition, have been detained all products, carry on negotiations several times and make a selfcriticism in writing on the grounds of infringing by others, have paid the expensive fine finally。s own image and interests, attack the rival, the external brand is sent fulltime or hire personnel, but the great majority are still the mercial works utilizing the whole country to open, carry on omnidirectional monitoring t。s market , on the body of our enterprise, the normal order that has not merely disrupted the market, has infringed the interests of rights and interests people, have reduce the international reputation of made in China , has damaged the public image of reform and openingup of our country too. After our country enters the WTO , the selfsatisfied Chinese brand is trying hard to seize the opportunity, while going abroad, the western developed country has made the strategic defence in time with this, set up to of our country sports goods including technology , standard , getting green environmental protection , move plant protection , antidumping , intellectual property right , munity responsibility dishes of dishes of barrier, close down , stop the entry of the like product with the extremely unkind clause . Meanwhile, they also used three unique skills , first, strengthened the registered dynamics to the patented technology of the products. In 2020, accounted for 5 at home in our country authorized the patent for invention. 2%, and accounts for 76 abroad. 1%。s fitness , because by the look of experience of foreign countries, go on balance temper and bee the fashion at electronic race apparatus. Classifying looking from national economy, it belongs to the tertiary industry that sports is consumed, it exceeds 10% in succession to accelerate in recent years, and the speed is accelerated year by year. The share of spuring grwoth of the national economic of consumption of sports and keeping fit will inevitablely continue increasing . This kind of fitness is consumed and contained relatively widely, have both consumption of resident and public consumption (such as health club ), its consumption acceleration rate exceeds 20%, among them, the electronic race apparatus exceeds 40%, have stronger growth momentum. Intellectual property right and trade friction The intellectual property right bees soft rib of the sports goods industry of our country, it is the production that because we are correlated with to market economy and with the sports products, it invent, trade,etc. the knowledge one possession, belong to, know little about game the rules and laws and regulations and the information not relevant not transfer. One sports apparatus or equipment know which country invent , others had already registered unexpectedly, under the situation which contents are registered, but we have produced and sold for many years. Not merely the style , structure are the same for some products, even appearance , color are very close , the more sad one is, because to to ignore abovementioned situation, we hold oneself is it reach product this birthplace go for exhibiting