The invention discloses a central multi-drive transmission device of an elongated output shaft of a speed
reducer. The central multi-drive transmission device of the elongated output shaft of the speed
reducer resolves the problems that an existing device needs middle transition transmission, and is low in efficiency and high in cost, and is characterized in that a
machine shell of the speed
reducer is elongated, the elongated output shaft is arranged, a
pinion is arranged at the shaft end of the elongated output shaft in a matched mode, the
pinion is directly meshed with the a big gear, and the speed reducer is provided with an oil extraction pipeline and comprises a box inside oil extraction
pipe, a combined hole cover, a plate-penetrating
pipe connector, a box outside oil extraction
pipe, a stop valve, an oil blockage, and the like. According to the central multi-drive transmission device of the elongated output shaft of the speed reducer, the
pinion arranged at the shaft end of the elongated output shaft is utilized to directly transmit the big gear, and therefore the transmission efficiency is high; when the arranged oil extraction pipeline replaces oil, the detachment of the speed reducer is not needed, and the replacement is convenient; and the combined hole cover, the plate-penetrating pipe connector and the like are combined to form a detachable pipeline, so that the oil extraction pipeline does not affect the replacement of the speed reducer.