top drive equipment

Abstract

The invention patent belongs to a top drive equipment for energy drilling. Including power transmission equipment, the power transmission equipment includes an AC frequency conversion motor and a planetary reducer; the AC frequency conversion motor includes an output shaft; the planetary reducer includes a sun gear shaft and a planet carrier output shaft, and the feature is: The motor is located at the lower end of the AC variable frequency motor; the sun gear shaft of the planetary reducer is installed at the lower end of the output shaft of the AC variable frequency motor; the output shaft of the AC variable frequency motor, the input shaft of the planetary reducer and the The output shafts of the planet carrier are all completely through hollow shafts, and the axis lines of the three are coaxial, and the central tube is installed in the hollow of the three, and are coaxial; the outer surface of the central tube is provided with EXT external splines; The output shaft of the planetary carrier is provided with an INT internal spline that matches the EXT external spline on the outer surface of the central tube; the central tube passes through the EXT external spline and the INT internal spline of the planetary output shaft key paired installation.

Description

technical field [0001] The patent of the present invention relates to a driving device in drilling of petroleum, natural gas and liquid rock gas, especially relates to the drilling equipment driven by the top of the drilling rig, and provides rotating power for the drilling tool of the drilling. Background technique [0002] The top driving equipment provides rotating power for the drill pipe in the drilling. It can directly rotate the drill string from the upper part of the derrick, and move up and down along the special guide rail in the derrick to lower the drilling tool or lift the drilling tool upward. Feed down to complete various drilling operations such as drill string rotary drilling, drilling fluid circulation, standing root connection, make-up and breakout, back reaming, etc. The main components of the top drive are the power drive device (including motor, reducer), automatic cock valve switch device, backup clamp pipe processing device, guide rail, etc. When dri...

AI Technical Summary

Problems solved by technology

[0004] However, in actual use, it is found that the top drive equipment is very large. Before installing it, it is necessary to go to the drilling team to re-map the second-floor platform of the drilling rig, then redesign, manufacture, and then go to the drilling team to renovate and install the second-floor platform If the plug valve is used for a period of time, the closing and opening force will increase a lot. During the switching process, sometimes the cylindrical roller will slip out of the upper cover, and the shaft of the cylindrical roller will break. Sometimes the upper cover is damaged; after the back tong is used, rusted or dirty, the back tong is not perpendicular to the center pipe, which seriously affects the thread tightening and loosening of the drilling tool, and the back tong cannot move up and down, only by special tools In order to provide clamping for the screwing and loosening of automatic cock valves, manual cock valves, protective joints, drilling tools, etc.; it is very inconvenient to maintain the jaws and jaw holders in the backup tongs

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