70 d wheel independent drive gear box

70 d wheel independent drive with 2019 - gear box 05 - 22 Hu Jinglei 1 wang lei (2 1. Xi 'an petroleum university; 2. Lanzhou LanShi group co. , LTD. ) Abstract: with the wheel independent drive mode is more and more widely used, in the field of work more and find some unreliability of chain transmission, due to the chain wear, pitch will become big disconnect between, cause inconvenience to site work, in this case, the advantage of the gear drive are evident. Keywords: wheel independent drive; Chain transmission; Introductions to the gear transmission with the development of oil drilling rig, ac, dc drive drilling rig or electromechanical compound drive drilling rig, wheel independent drive way to get more and more widely used. In the process of drilling, by the wheel turns the kelly realize drilling movement. The wheel independent drive powered primarily for rotary table. General 70 d rig used ZP375 rotary drive device is mainly composed of dc motor, coupling, chain box, ZP375 rotary table, table beam, lubrication system and other parts. At the scene found in actual work, due to the chain drive some practical shortcomings, makes the chain once wear and pitch will become big disconnect between, thus affecting the drilling work. In such cases, a gear transmission is made, the gear can not only guarantee the instantaneous transmission ratio is constant, high stability, transfer motion is accurate and reliable, transmission power and speed range is larger, at the same time, compact structure, reliable operation, can realize large transmission ratio, high transmission efficiency, long service life and is of practical significance for field drilling work. 170 d rig with wheel independent drive gear box 1. 1 technical parameters ( See table 1) 1. 2 structure that wheel independent drive by 1, two 800 kw dc motor block of gear transmission, ball cage universal shaft. Between dc motor and transmission input shaft through ball cage universal shaft of the gearbox output shaft and input shaft between the ball cage universal shaft coupling. Gear transmission with manual shift. The motor output shaft is equipped with inertia brake. For independent drive motor control by PLC, dial 0 - can be realized 243 RPM range of constant torque stepless speed regulation and over torque protection. Rotary's most it torque of 42000 n * m. Gear box is equipped with independent electric lubricating system, gear transmission gear and bearing all use thin oil lubrication. Electric pump control as well as with independent drive 800 kw dc motor to realize linkage, also can start alone. Lubrication system work pressure of 0. 3 to 0. 5Mpa。 The system working pressure can be through the pressure sensor to driller control room pressure gauge for monitoring. Lubricating oil is equipped with the overflow valve in the road, can be used to control the lubrication system work pressure. Lubricating oil way oil suction mouth is equipped with suction filter. Lubricating oil: when the environment temperature above 0 ℃, using L - AN100 oil, total loss system under 0 ℃, using L - Oil AN46 total loss system. 1. 3 the advantage of the gear box relative to the chain box ( 1) Chain box and the gear box are welded structure, but the chain box chain to facilitate installation, generally adopt the method of open valve in body side, although that facilitate the installation of the chain, but easy to dust in the outdoor work, etc. , often need to remove the cleaning of the chain, is not conducive to work at the site; And gear box adopts fission of welded box up and down, just in the gears in the gearbox has convenient for observation on operation and oil hole cover, these are designed for the gear in the field work. （ 2) Chain box when installing environment temperature in 0 - general requirements 35 ℃ range, optimum temperature range at 15 ℃ - Between 25 ℃. To adapt to the environment temperature - and gear box 30℃- + 55 ℃, all-weather open operation, temperature & le; 35 ℃, the highest absolute temperature & le; 80 ℃, under high temperature and low temperature region, gear box is more applicable. （ 3) During the installation process, chain box installation time-consuming, laborious both input shaft assembly and output shaft assembly are the small end shaft assembly must be from the cabinet after the big end flange on one side of the lift on the casing flange mounting holes, as a whole from the side Kong Tong, until the junction surface bearing with casing flange surface positioning fit, transverse joint, connecting bolts fastening bearing seat again; The installation of a gear box just put the lid lifting up and can be installed from the top down, save time and effort. 2 conclusion based on the actual needs of the field work, gear box no matter from the aspects of reliability, safety, economy and so on are better than the chain box, LanShi equipment company has this design was applied to 70 d rig, and will be widely recognized by users. References [ 1] SY / T5531。 Standard APISpec7K with rotary drilling rig specification [ S] 。 Source: the science and technology innovation and application of 34, 2015