Undermounted multi-functional high-torque drilling rig transmission device

Abstract

An underneath type multifunctional large-torque drilling machine transmission device is characterized in that two sets of power systems (or one set of power system) transmit power to two vertical input crankshafts of a three-ring speed reducer through two horizontal input shafts and reversing of a reversing bevel gear, a spline groove is formed in a hollow low-speed output shaft of the three-ring speed reducer, drill pipe bushing sets are fixed to the upper end and the lower end of the lower-speed output shaft, and a drill pipe which is provided with a spline and is inserted into the low-speed output shaft is driven to complete rotational motions. A motor, a clutch, a transmission, a short transmission shaft, a positive and negative gear box, a high dividing box and a horizontal input shaft with a bevel gear are arranged between the power systems and the horizontal input shafts. The three-ring speed reducer comprises the two vertical input crankshafts, three annular plates with internal gears and a hollow large gear low-speed output shaft provided with an internal keyway. The vertical input crankshafts are three crankshafts with 120-degree eccentricity. The underneath type multifunctional large-torque drilling machine transmission device is simple in structure, large in transmission speed ratio, long in service life, flexible in operation, capable of being applied to various engineering drillers (such as threaded pile machines, screw rod pile machines, reducing pile machines and large-diameter mixing pile machines), and adaptable to large-torque operation.

Description

technical field [0001] The invention relates to a high-torque transmission device of an engineering construction drilling rig, in particular to a multi-function high-torque transmission device placed below. Background technique [0002] At present, among the drilling rig transmission devices used in foundation treatment engineering drilling rigs, the power transmission devices are usually divided into two types: upper-mounted and lower-mounted types: the upper-mounted power transmission device is arranged on the top of the drill pipe by two or three motors and reduction devices. , rely on the frequency converter to provide power to change speed, and move up and down with the drill pipe. The undermounted power transmission device is installed on the base frame of the drilling rig and does not move up and down with the drill pipe. The center of gravity is low and the stability is good. The undermounted type has a single-stage or multi-stage gear reduction transmission device; ...

AI Technical Summary

Problems solved by technology

The upper-mounted power transmission device has a high center of gravity and poor stability, and the speed regulation of the frequency converter cannot increase the torque; the lower-mounted single-stage reduction transmission device cannot obtain a large transmission speed ratio and large torque due to size limitations; the lower-mounted multi-stage The reduction transmission device, although it can increase the torque during deceleration, but to obtain a large speed ratio and large torque must go through multi-stage reduction transmission, and its transmission device is relatively complicated

In the process of use, the transmission speed ratio of the general single-stage or multi-stage gear reduction transmission device is relatively small, the transmitted torque is small, and it is not suitable for high-torque operations

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