绿色大胆人体艺术

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      Home >> News >>新聞動態 >> 帶您了解扭轉試驗機
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      帶您了解扭轉試驗機

      帶您了解扭轉試驗機

      概述

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      扭轉試驗機是對試件施加扭矩,測出扭矩大小的設備。扭轉試驗機是由主機、驅動系統、傳動系統、測量顯示系統、安全保護系統等主要部分組成。

      主機:材料扭轉試驗機采用臥式結構,主體結構采用整體加厚鋼板,以保證整機的剛性;夾具采用優質合碳素鋼,壽命長;試樣的安裝拆卸方便、快捷。

      驅動系統:全數字控制系統驅動;速度調節,加載均勻、穩定。

      傳動系統:采用精密減速器傳動,保證傳動的穩定均勻及精度。橫向空間範圍內任意調節。

      測量顯示系統:數顯式扭轉試驗機采用大屏幕液晶顯示系統同步顯示試樣的扭矩、扭轉角度、試驗速度。系統可以設置扭轉角度,檢測試件的扭矩,也可以設置扭矩檢測試件的扭轉角度。

      安全保護系統:過載保護、過電流保護等。

      工作原理

      扭轉試驗機在機體上有一個基本固定的夾頭,用兩平面和夾緊螺栓固定扭轉試樣的一端。基座上有一個可水平移動的電動減速裝置,左端是一個可旋轉的夾頭,夾持試樣的另一端。當電動減速器轉動時,帶動活動夾頭轉動,而使試樣的一端相對于另一端發生了轉動,故試件受扭而産生變形。

      應用

      一、材料扭轉試驗機主要用于材料及制成品在室溫下扭轉力學性能的檢測(最大扭矩,抗扭強度,上、下屈服強度,扭轉角度等等),也可用于材料及制成品的扭轉破壞等性能試驗。

      二、金屬線材扭轉試驗機適用于測定直徑(或特征尺寸)的金屬線材在單向或雙向扭轉中承受塑性變形的能力及顯示線材表面和內部的缺陷。

      分類

      扭转试验机检测的产品分類,扭转试验机分为弹簧扭转试验机、线材扭转试验机和材料扭转试验机。其中材料扭转试验机又可分为金属材料扭转试验机和非金属材料扭转试验机两种。

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      維護保養

      扭转试验机是一种高精度的仪器,做好日常維護保養是保证设备的正常运行及测量精度重要條件,可以延長扭轉試驗機的使用壽命。扭轉試驗機的保養是在試驗機運行的前後及過程中進行的清潔檢查,主要檢查要害、易損零部件的情況。還有在換季、轉移、停放時的保養工作。

       

      清潔檢查保養:進行清潔、緊固和潤滑作業,並部分地進行調整作業,維護機械完好技術狀況,保養開始以檢查、調整爲中心,保持機械各總成、機構、零件具有良好的工作性能。定期檢查主機和油源處是否有漏油的地方,定期的進行特殊部件的清洗,還定期給各個部件塗抹潤滑油,防止零件之間磨損。

      換季的保養:主要是更換適用季節的潤滑油、燃油,采取防凍措施,增加防凍設施等。

      轉移的保養:機械轉移工地前,應進行轉移保養,作業內容可根據機械的技術狀況進行保養,必要時可進行防腐。

      停放時保養:停用及封存扭轉試驗機時應進行保養,主要是清潔、防腐、防潮等。避免暴曬雨淋。庫存機械由資産管理部委托保養,其余機械由使用部門保養。

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      注意事項

      在扭轉試驗機使用過程中,需要特別注意。包括操作規程,以及從安裝、操作、維護、故障判斷等方面的相關事項。

      一、工作條件

      扭轉試驗機須在室溫10°C~35°C範圍內,相對濕度≤80%工作平台需要在穩固的基礎或工作台上電源電壓的波動範圍不應超過額定電壓的±10%,否則會對機器造成傷害;

      二、使用過程中

      1、在實驗過程中,試件承受了扭矩測力指針已經轉動之後,就不能夠改變量程選擇旋鈕。

      2、急停開關是機器異常時緊急狀況下使用,不能做爲停止按鍵使用

      3、使用V形夾頭夾持試件時,必須夾緊,避免試驗過程中試件打滑。

      4、試驗過程中若發現異常現象,應立即停機,查故障原因,待修複後方可重新動。

      5、手輪開關在校准機器或者並盤的情況下關閉使用

      6、擰動加載速度調節旋鈕時要緩慢進行,即先用低速加載,達到一定變形後,再調到所需速度進行加載。

      7、扭轉試驗機運轉時,操作者不得擅自離開。

       

      故障排除

      扭转试验机在使用過程中的故障检修情况如下:

      1、無電源指示,不操作

       檢查電源電壓是否正常及熔絲是否熔斷;

       檢查開關是否接觸良好;

       檢查接觸器接觸是否正常;

       檢查線圈是否開路;

       檢查指示電源變壓器有無6V輸出,若指示燈損壞,則予以更換;若連接線開路,則重新焊接;若變壓器損壞,則予以更換或重新繞制。

      2、上、下限不能控制

       檢查位式開關是否正常,若無控制電壓,多爲連接電路處于開路,則將電源到開關的連接線重新焊接;

       檢查接觸器是否損壞。

      3、活動橫梁電動機不能轉動

      若位式開關開路或者短路,則予以更換或拆開控制器,重新進行焊接和清洗,並做好幹燥處理;然後,檢查該電動機油汙三相電壓,是否斷相,在測量電動機直流電阻或在存在斷相的情況下,電動機不轉,說明電動機已損壞,應立即斷電。

      4、位式控制器方向相反

      若位式開關方向相反,說明三相相位接錯,調整相位即可。

       




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And outward, too, upon others; a few up-ended cottonbales leaned against each other ragged and idle, while women and babes starved for want of them in far-away Lancaster. He was within easy range and was still trotting nearer. I snatched up my carbine, aimed, and then recovered, looking sharply to my left as if restrained by the command of some one behind the canes. The Federal's cool daring filled me with admiration. Had the foes he was looking for been actually in hiding here they could have picked him out of his saddle like a bird off a bush. His only chance was that they would not let themselves be teased into firing prematurely on any one man or six. Ferry beckoned me. I mounted and trotted down the woods side of the fence, at the same time the Federal's six men approached from three directions, and down the road the main column entered upon the scene. "She told us about it. And you needn't look so disturbed; she only praised you." "Part with it? Oh, not for the world beside!" 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They yelled and shouted and said that Bilsen and the whole district must be burned down, that the major was far too kind, that they were cowardly soldiers who hid themselves in houses and dared not fight an honest fight in the open, that civilians189 had also been shooting, and so on. I pointed out that the firing did not come from the house, but from the shrubbery near the house; that nobody could have seen a civilian shooting. As they insisted, I said with a laugh that they had seen ghosts. That excited them so, that they came on to me in a rage, and asked whether this was a laughing matter? And they would surely have used violence had not the sergeant intervened. The same, in self-same place, and by itself III. Here, as elsewhere, we shall employ the genetic method of investigation. Aristotle’s writings do not, indeed, present that gradual development of ideas which makes the Platonic Dialogues so interesting. Still they exhibit traces of such a development, and the most important among them seems to have been compiled from notes taken by the philosopher before his conclusions were definitely reasoned out, or worked up into a consistent whole. It is this fragmentary collection which, from having been placed by some unknown editor after the Physics, has received a name still associated with every kind of speculation that cannot be tested by a direct or indirect appeal to the evidence of external sense. IV. Holy Dêmêter’s fruit it gave them; the sweet spring Dear Daddy-Long-Legs, out from Bonnyrigg Four Corners. Amasai stayed up all night to I hope you appreciate the fact that this is a long letter from High on a hill, one with the rock, are built the temples, up to which is a flight of steps hewn in the stone itself. At every stage, or nearly, are little shrines with images of Ganesa, the elephant-headed god, or of Ananta, the sacred serpent, decked with flowers, the mindi flower, which has[Pg 108] a strong scent of pepper. In some places the whole temple, as vast as a cathedral, is hewn out of the hillside; the columns in elaborate and intricate patterns, the niches and altars wrought with inconceivable toil and patience, not a scrap added or stuck on. In the dim distance is a huge red statue of Siva, wreathed with flowers. CAWNPORE AT SEA The lines are as follows, and refer to a chateau then being built by Louis for the Marquise de [6] Pompadour, whose original name was Jeanne Antoinette Poisson: “I wonder who’s in it?” Dick mused as Jeff cut the gun and went into a glide, the better to get a look at the oncoming craft low over the seashore. Their own airplane had been headed south, down the coast. To their left, as they sped on, the lighthouse poked its tower out of the drifting, dispelling fog. The drone of an incoming airplane took them racing to the landing spot where Jeff came down to report that he had taken the unconscious seaplane pilot to a hospital where it was declared that he had a bad blow on his temple and might not recover his mental clearness for many days. The only reason Jeff would swing toward the water and give up working with the stick must be that the stick would not operate the elevators. “That wire, being twined around the other, makes me think it was added—after the first one was put in,” he declared. He watched her as she went out of the tent, and the surgeon and steward worked with the shining little instruments. 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She had slid back to his knee, and the weight and warmth of her comforted him a little. He lifted his head quickly at her words. She flushed at his audacity. "No w?onder as she cudn't stick to him—hard, queer chap as he be." "I tell you, steward," said the smith who had before spoken, and stepping so near Calverley that he involuntarily drew back, "if you prize your life, you will call no man here a bondman. I am free—that man is free—" pointing to Holgrave, "and we are all free—all sworn brothers; and no one shall dare," raising his voice, "to brand, with such a name, a mother's son among us! You have received fair warning, and leave to go: retire now—instantly, if you are wise! Clear a passage there for my Lord de Boteler's steward! There is now room for you to pass—your retainers are waiting without—and now take the man you call a bondman, and away with you all. What! you will not lay hold of him? Take him, I say!" elevating his voice—"seize the villein, and drag him back to his bondage! What! not a finger, after all the trouble you have taken?—then, away with you alone!—away!" And Calverley, from the mere instinct of obedience to a superior power, moved towards the door. "And if ever," continued the smith, "you are found hunting in this forest again for bondmen, as you call them, we may chance to give you a lodging where you will have little reason to complain that the sun shines too brightly!"
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      ENTER NUMBET 0012