Gear box and drilling rig winch

Abstract

The invention provides a reduction box and a drilling machine winch. The reduction box comprises a shell, two first motors, an input shaft, a middle shaft, a gear shifting system, an output shaft and a bit feeding shaft. The two first motors are arranged outside the shell. The input shaft is sleeved with a first gear and a second gear, and the two ends of the input shaft extend out of the shell and are connected with the corresponding first motors. The middle shaft is sleeved with a high-speed gear, a low-speed gear and a third gear, the high-speed gear is engaged with the first gear, and the low-speed gear is engaged with the second gear. The gear shifting system comprises a connecting device and a driving device, the connecting device is connected with the middle shaft, and the driving device is connected with the connecting device and used for driving the connecting device to be connected with the high-speed gear or the low-speed gear so as to drive the third gear to rotate. The output shaft is sleeved with a fourth gear, and the fourth gear is engaged with the third gear. The bit feeding shaft is sleeved with a fifth gear, and the fifth gear is engaged with the fourth gear. According to the reduction box and the drilling machine winch, miniaturization of the reduction box is facilitated.

Description

technical field [0001] The invention relates to transmission equipment technology, in particular to a reduction box and a drilling rig drawworks. Background technique [0002] An oil drilling rig refers to a mechanical device that drives a drilling tool to break rocks and drill underground to obtain oil or natural gas during oil drilling. Commonly used oil drilling rigs are mainly composed of power machines, transmission machines, working machines and auxiliary equipment. There are generally eight systems: hoisting system, rotating system, drilling fluid circulation system, transmission system, control system, power drive system, drilling rig base, drilling rig auxiliary equipment system; among them, the lifting system is mainly composed of drawworks, derrick, crown block, traveling Composed of moving blocks, hooks and wire ropes, the main functions of the hoisting system are to trip drilling tools, control drilling pressure, run casing, deal with complex conditions in the ...

AI Technical Summary

Problems solved by technology

[0004] The current hoisting drilling rigs generally require more than 4 tons of helicopter hoisting capacity, and are only suitable for hoisting small mechanical drilling rigs. One of the reasons is that some of the winch components of the drilling rig have heavy weight and large volume. Especially the reduction box, in the existing reduction box, the shift is realized through the connection between the chain and the high-speed sprocket or the low-speed sprocket, because the transmission distance of the chain is long, so the problem of the large size of the reduction box is caused

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