The reduction gear of the crawler travelling unit where the main bearing fixation is easy

摘要

main bearing of the present invention is easy to secure the crawler travel unit of the reduction gear to the planetary gear mechanism giving fixed to form a release preventing recess in the carrier wrapped around a two-stage rock bolt plate of the lock plate is damaged, even if a part to prevent separation of the lock plate of the main bearing that will effectively lock the nut to secure the main bearing ring, which in the is easy to provide a reducer of the crawler travel unit. The purpose of the invention is achieved for the hydraulic motor and is equipped with a casing that is fixed to the inner end and the spline formed in the main bearing is installed on the outer peripheral surface of the fixed casing, so as to support the main bearings in the axial direction a nut which is fastened to one side of the fixed casing ring, the ring nut multiple bolt locks, which are at a predetermined interval on one side of the ring nut in a state engaged with the splines of the fixed casing to prevent the pulleys from the fixed casing plate and it is connected via an output shaft of the hydraulic motor and the planetary gear mechanism which decelerates receiving power, the planetary gearing, which outputs the power from the decelerating gear mechanism, and the ring gear are coupled integrally to the driving body In the speed reducer of the crawler traveling unit comprises a housing in which a sprocket is mounted, is formed in the concave shape on one side of the planetary gear mechanism is part of the bolt to secure the lock plate giving surround the lock plate is damaged even if the lock plate and that further comprises a release preventing recess to prevent the nut away from the ring to the technical base. ;