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旋挖钻机牙嵌式钻杆啮合动力学分析

时间:2019-09-25 21:05来源:毕业论文
通过对有限元理论的运用,建立旋挖钻机钻杆在刚旋进时的动力学模型,分析了钻杆在未伸出状态下旋进工况时的钻杆的振动变化,得到了钻杆横向与轴向的振动数据,为分析钻杆牙套

摘要旋挖钻机,常见的用于工程基础施工机械设备,旋挖钻机经历了几代发展和完善,目前,其机电一体化程度已经非常高了,操作简单,和其他钻机相比,它有很多其它钻机不具备的功能,是当前钻孔打桩设备未来发展的方向。在实际施工中,也被各级施工部门广泛使用。旋挖钻机的适用范围包括建筑,道路,桥梁,水电站,机场,港口码头等工程钻孔桩基作业。由于国内的起步较晚,现在还在推广阶段。39533
由于我国旋挖钻机在整个开发,研制,完善的道路上落后于国外先进的国家,所以国产的旋挖钻机在整个工艺 、设计、检测等方面落后于国外一线的旋挖钻机。拿检测显示功能来说,我国的旋挖钻机在钻杆牙形键与动力头咬合状态方面的研究还比较少,然而国外的的旋挖钻机就有相关的测试技术。那么钻杆牙嵌和动力头的啮合只有靠操作者的感觉和经验来判断,这对操作者的熟练度提出了很高的要求。了解选挖钻的人都知道,钻杆牙嵌是将动力头扭转力传给钻杆的核心部分,是非常容易被磨损的,在啮合不完全的情况下,可能发生错位,导致钻杆报废,造成财产损失。
通过对有限元理论的运用,建立旋挖钻机钻杆在刚旋进时的动力学模型,分析了钻杆在未伸出状态下旋进工况时的钻杆的振动变化,得到了钻杆横向与轴向的振动数据,为分析钻杆牙套与动力头内键齿啮合前后的振动变化提供了数据参考。
毕业论文关键词:旋挖钻机; 钻杆;振动;动力学
Abastract 源¥自%六^^维*论-文+网=www.lwfree.cn
Rotary drilling rig is common for foundation engineering construction machinery and equipment, rotary drilling rig experienced several generations of development and improvement, at present, the degree of mechanical and electrical integration has been very high, compared to the simple operation, and other drilling rig, it has many other drill does not have the function, is the direction for the future development of the piling machinery. In actual construction, it is widely used by all levels of construction departments.. The application of the rotary drilling rig includes building, road, bridge, power station, airport, port, etc.. Due to the late start, and now is still the promotion stage.
Due to our rotary drilling rig in the development, research and development, improve the road behind in foreign advanced countries, so domestic rotary dig drill in the whole process, design, testing and other backward in foreign line of rotary drilling rig. Take the detection and display function, our country's rotary drill rig has no function related to the drill pipe tooth inlay and power head, but the foreign rotary drill rig has the relevant test technology.. So the engagement of the drill rod and the power head can be judged by the experience and experience of the operator, which is highly demanded by the operator.. Knowing to choose drilling all know, drill pipe dental inlay is will power head twisting force to the core part of the drill pipe, is very easy to wear, in incomplete meshing may offset, resulting in scrap drill pipe, causing the loss of property.
Through the limit element theory of learning, a rotary digging drill rod in just precession dynamics model, analyzes the vibration change of a drill pipe in not extended downward into the condition of the drill pipe, drill pipe transverse and axial vibration data is obtained, for the analysis of drill pipe jaw and dynamic meshing head before and after the change of vibration to provide reference data.
keywords:Rotary drilling rig;Drill pipe;Vibration;Dynamics 源¥自%六^^维*论-文+网=www.lwfree.cn
目录
第一章 前言 4
 1.1课题背景 4
 1.1.1旋挖钻机简介 4
 1.1.2 旋挖钻机关键部件结构及特点 4
 1.1.3 旋挖钻机整体构造与作业原理 6
 1.1.4 旋挖钻机施工作业程序 6
1.2国内外现状7 旋挖钻机牙嵌式钻杆啮合动力学分析:http://www.lwfree.cn/jixie/20190925/39863.html
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