The invention relates to the technical field of
pile machine speed reduction, in particular to an external gearing four-splitting
pile machine speed reduction device with motors placed upside down. The device comprises a box body, the motors, a cover plate and a transmission component and is characterized in that the shaft extension ends of the motors are connected with a planetary
reducer, the motors are connected to the lower side of the box body upside down, and the planetary
reducer is arranged in the box body; the external gearing four-splitting transmission component comprises a driving wheel, splitting gears symmetrically arranged on the two sides, and a center gear ring, a mandrel of each splitting gear is fixed to a supporting plate connected to a cover plate of a planetary
reducer shell, and the center gear ring is connected with a disc; the disc is connected with a main cylinder, the main cylinder is supported by inner holes of the box body through two bearings, and the main cylinder is connected with a
drill rod
flange. The device has the beneficial effects that due to the fact that the two motors are placed upside down, the motors and the speed reducer can be dismantled easily, and maintenance is convenient; the probability of tipping accidents is reduced;
water resistance and dust resistance of the motors are improved;
bearing capacity is higher under the external gearing four-splitting condition compared with the two-splitting condition, the difficulty of the inner gear ring technology is lower than that of the carburize-
grinding technology, cost is low, and
cracking does not happen easily.