Using derrick simulation analysis 2000 system, 80/29 oil derrick model was established.

應(yīng)用井架仿真2000軟件系統(tǒng)建立了80／29采油井架模型，進(jìn)而利用仿真系統(tǒng)對(duì)其進(jìn)行靜力人妻系统无码专区久久五月天、動(dòng)力特性和穩(wěn)定性分析国产首页在线视频。

Recently, with the application of finite element method in engineering mechanics, it is necessary and possible to study the welding procedure of domestic oil derrick materials, for the purpose of more appropriate procedure and to improve the welding quality and productivity of oil derrick.

近年來亚洲性爱视频偷拍，隨著計(jì)算機(jī)輔助設(shè)計(jì)在工程中的應(yīng)用欧美日韩精品视频一区在线看，有可能也有必要對(duì)國內(nèi)井架材料的焊接工藝進(jìn)行進(jìn)一步的研究黄性视频在线，制定合理的焊接工藝，提高井架焊接質(zhì)量。

During the manufacture of oil derrick, such factors as welding defects, deforming and cold crack have key effect on the oil derrick quality.

在井架的制造過程中国产精品无码毛片，焊接缺陷三级黄色美女网站、焊接變形和焊接冷裂紋是影響井架質(zhì)量的關(guān)鍵因素。

The stability analysis under pressure indicates that the whole stability is preferable, and can assure the normal work of the oil derrick.

對(duì)井架的模態(tài)分析表明欧美色欧美亚洲另类七区，井架的固有頻率與底盤發(fā)動(dòng)機(jī)男女日比视频大全、絞車的工作頻率不同，因此當(dāng)絞車在不同轉(zhuǎn)速下工作時(shí)www,qqriav,com，不會(huì)發(fā)生共振亚洲刺激第一页。

Those simulation analysis results can be used as scientific basis for derrick design staff to revise design and for detection staff to detect oil derrick in field.

仿真分析結(jié)果為井架設(shè)計(jì)人員修改設(shè)計(jì)方案、檢測人員對(duì)在用采油井架現(xiàn)場檢測提供科學(xué)依據(jù)91精品露脸在线观看。

In this paper, welding process parameters of oil derrick have been determined, and a suitable welding procedure have got by use of welding procedure qualifications. The paper pointed out the common defects in oil derrick welding, explained it, and gave preventive measures.

本課題通過焊接工藝評(píng)定99精品国自产在线视频，確定井架焊接的工藝參數(shù)真实国产激情在线观看视频免费下载，并指出了井架焊接中容易出現(xiàn)的焊接缺陷色av资源，分析了缺陷產(chǎn)生的原因，給出了預(yù)防措施久久中文字幕人妻丝袜。

The Air winch Operator must ensure the winch wire is moving freely in the derrick to avoid any damage to the steel structure especially the fingerboard and that the air tugger is secured when not in use.

氣動(dòng)絞車操作者要確認(rèn)氣動(dòng)絞車鋼絲繩和井架不干涉日本视频高清WWW，以避免損傷井架的鋼結(jié)構(gòu)，特別是指梁欧美α片在线高清视频观看。不使用氣動(dòng)絞車時(shí)免费在线看a片视频网址，一定要固定安全。

The Driller and the Derrickman must be able to communicate at all times when the Derrickman is working on the derrick board.

當(dāng)井架工在二層臺(tái)工作時(shí)91av免费，司鉆和井架工一定要能時(shí)刻保持聯(lián)系精品色哟哟一区二区。

In a typical trip out of the hole, the derrickman wears a special safety harness that enables him to lean out from the work platform to reach the drillpipe in the center of the derrick or mast, throw a line around the pipe and pull it back into its storage location until it is time to run the pipe back into the well.

在典型的起鉆過程中，井架工系上特殊的安全帶操操操操操操操网，這樣能夠使他從工作平臺(tái)上傾斜去接近位于井架或者桅架中央的鉆桿白嫩丰满大乳美女在线观看，扔一根繩子去纏繞鉆桿，然后拉動(dòng)鉆桿到其存儲(chǔ)的位置精品女同一区二区三区在线，直到再把這些鉆桿下入到井眼時(shí)為止鸥美激情性生活大片。

To evaluate correctly the load capacity of the derrick, a method of computer simulation test is proposed.

為了正確評(píng)定在用井架承載能力，提出了一種井架計(jì)算機(jī)模擬試驗(yàn)中等效處理計(jì)算機(jī)數(shù)值模型的方法久久精品国内久精国品。