本文關(guān)鍵詞：大口徑金屬螺旋管內(nèi)壁焊縫自動跟蹤打磨機器人的研制　出處：《東華大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 管道機器人 結(jié)構(gòu)設(shè)計 有限元分析 動力學(xué)仿真 大口徑螺旋管

【摘要】：隨著國家發(fā)展資源整合戰(zhàn)略性布局的持續(xù)推進,管路運輸業(yè)對大口徑螺旋管的需求量明顯增加。為便于大口徑金屬螺旋管內(nèi)壁噴涂處理,提高內(nèi)壁表面質(zhì)量,延長其使用壽命,需要對焊接后的管道內(nèi)壁焊縫進行打磨。目前國內(nèi)制管行業(yè)范圍內(nèi)通常使用人工手持角磨機作業(yè),不但效率低下且不能保證打磨精度,并且嚴重危害工人身體健康。國外相關(guān)設(shè)備屬于受限進口的特殊管道機器人,采購難度大,性價比太低而不宜采用。為此,根據(jù)相關(guān)企業(yè)要求,開發(fā)并設(shè)計一種用于大口徑金屬螺旋管內(nèi)壁焊縫自動跟蹤打磨的管道機器人,對提高螺旋管內(nèi)壁焊縫打磨質(zhì)量和作業(yè)效率、保障打磨工序一線操作工的身心健康和降低人力成本等具有重要意義和深遠影響。本文的主要研究內(nèi)容如下:(1)簡要介紹了大口徑螺旋管的應(yīng)用背景以及國內(nèi)外管道內(nèi)作業(yè)特種機器人的研究現(xiàn)狀,闡述了本文的研究內(nèi)容和方法;(2)分析大口徑螺旋管內(nèi)壁焊縫分布形態(tài)情況和焊縫打磨技術(shù)要求,提出和設(shè)計了分段作業(yè)的“拼接式”打磨工藝;(3)開展了管道機器人的總體設(shè)計和造型,其中包括:機器人主體支撐裝置、三軸回轉(zhuǎn)作業(yè)裝置、打磨進給裝置和智能檢測模塊。完成了支撐機構(gòu)和驅(qū)動傳動機構(gòu)的詳細設(shè)計,并對重要電氣元部件選型校核;(4)設(shè)計了管道機器人打磨控制系統(tǒng),包括了焊縫自動跟蹤子系統(tǒng)、恒力打磨控制子系統(tǒng)、多工位分段作業(yè)的“二次接刀”控制子系統(tǒng)。(5)利用SolidWorks/Simulation模塊對管道機器人的機械機構(gòu)進行了有限元分析,得到了關(guān)鍵受力結(jié)構(gòu)件在載荷作用下形態(tài)特征,如空心回轉(zhuǎn)軸和支撐安裝機殼的受力變形情況在合理的區(qū)間范圍,從而驗證了機械結(jié)構(gòu)設(shè)計的合理性和選材的可靠性;(6)基于多體動力學(xué)仿真平臺ADAMS,開展了管道機器人在管道內(nèi)支撐作業(yè)的運動仿真,通過在各個支撐腿上預(yù)設(shè)傳感器獲得了在空間中標記點的坐標移動圖像。分析并驗證了三足電動支撐設(shè)計的可行性;
[Abstract]:With the continuous promotion of the strategic layout of national development resources integration, the demand for large diameter spiral pipe in pipeline transportation industry is obviously increased. In order to facilitate the spray treatment of the inner wall of large caliber metal spiral pipe, the surface quality of inner wall is improved. In order to prolong its service life, it is necessary to polish the welded pipe inner wall weld. At present, manual handheld angle grinder is usually used in the domestic pipe making industry, which is not only inefficient but also can not guarantee the grinding accuracy. And serious harm to the health of workers. Foreign related equipment is a restricted import of special pipeline robots, procurement is difficult, the ratio of performance to price is too low to use. Therefore, according to the requirements of relevant enterprises. A pipe robot is developed and designed for automatic tracking and grinding of large diameter metal spiral tube inner weld, which can improve the quality and working efficiency of the inner wall welding seam of spiral pipe. It is of great significance and far-reaching influence to ensure the physical and mental health of the workers in the grinding process and to reduce the labor cost. The main contents of this paper are as follows: 1). This paper briefly introduces the application background of large caliber helical pipe and the research status of special robot in pipeline operation at home and abroad. The research contents and methods of this paper are expounded. 2) analyzing the distribution of weld seam on the inner wall of large diameter helical pipe and the technical requirements of welding seam grinding, and putting forward and designing the "splicing" grinding technology for segmental operation; The overall design and modeling of the pipeline robot are carried out, including: the main body support device of the robot, the three-axis rotary operation device. Grinding feed device and intelligent detection module. Completed the detailed design of supporting mechanism and driving drive mechanism, and checked the selection of important electrical components; The grinding control system of pipeline robot is designed, which includes automatic seam tracking subsystem and constant force grinding control subsystem. The "secondary cutter" control subsystem. 5) the finite element analysis of the mechanical mechanism of pipeline robot is carried out by using SolidWorks/Simulation module. The shape characteristics of the key structural parts under load are obtained, such as the deformation of the hollow rotary shaft and the supporting mounting housing in a reasonable range. The rationality of mechanical structure design and the reliability of material selection are verified. Based on the multi-body dynamics simulation platform, Adams, the kinematic simulation of pipeline robot in pipeline is carried out. The coordinate moving images of marking points in space are obtained by preset sensors on each support leg, and the feasibility of tripodal electric support design is analyzed and verified.
【學(xué)位授予單位】：東華大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TP242

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