论文部分内容阅读
为了充分利用现有进口的45-R型牙轮钻机,东北工学院采选机械教研室和上海第一石油机械厂钻头研究室共同试制了用以将炮孔孔径从250毫米扩大为310毫米的矿用牙轮钻头扩孔器5支,其中倾角5度的3支,8度的2支,并于1980年8～9月在上海第一石油机械厂牙轮钻头实验台上做了试验。扩孔器的三个滚轮轴都倾斜一定角度,在扭矩的作用下呈螺旋线形转动,从而孔壁给扩孔器一个自动推进的力。这样,只需适当增加扭矩,就能使炮孔直径扩大,达到利用小型号钻机钻大孔径炮孔的目的。试验中测试了轴压、扭矩、转数、钻进速度、振幅和轴承温度等参数。试验表明:扩孔器的主要设计参数是合理的;从
In order to make full use of the imported 45-R type roller drills, the Mining and Mechanical Engineering Department of Northeast Institute of Technology and the First Shanghai Petroleum Machinery Factory Drill Laboratory jointly trial to increase the hole diameter from 250 mm to 310 mm mine With a cone bit reamer 5, of which 5 degrees dip angle of 5, 8 degrees 2, and in August 1980 ~ September 1980 at the Shanghai First Petroleum Machinery Factory roller bit test bench made a test. The three roller axles of the reamer are inclined at an angle and rotate in a spiral shape under the action of the torque so that the wall of the hole gives the reamer an automatic propulsion force. In this way, just by properly increasing the torque, the diameter of the blast hole can be expanded to achieve the purpose of drilling a large-aperture blasthole with a small-sized drill. The test tested axial pressure, torque, rpm, drilling speed, amplitude and bearing temperature and other parameters. The tests show that the main design parameters of the reamer are reasonable;