Patent ID: 8641569

Claim:
A revolving apparatus for a construction machine including a tubular housing on an upper end side of which a revolving motor is provided and whose lower end side is mounted on an upper revolving structure; a planetary gear reduction mechanism provided in said housing to reduce a speed of rotation of said revolving motor; an output shaft which extends in an upper and a lower direction within said housing and outputs a rotation whose speed has been reduced by said planetary gear reduction mechanism; and a pinion which is provided on a lower end side of said output shaft and meshes with an inner race of a revolving ring provided between said upper revolving structure and a lower traveling structure; wherein said planetary gear reduction mechanism being constituted by a sun gear, a plurality of planetary gears which mesh with said sun gear and internal teeth provided on an inner side of said housing and revolve around said sun gear while rotating, and a carrier which has a plurality of support shafts for supporting said respective planetary gears, said planetary gears being respectively provided rotatable on said support shafts by means of planetary gear bearings, lubricating oil for lubricating said planetary gear reduction mechanism being held in said housing, wherein a lubricating oil guide member for covering meshing portions of said sun gear and said planetary gears and for receiving the lubricating oil scattered from the meshing portions and guiding the same to said planetary gear bearings is provided at an upper position of said planetary gear reduction mechanism, and wherein said lubricating oil guide member includes; a bottom plate portion which is mounted on an upper end surface of each of said support shafts of said carrier; a covering plate portion which rises upwardly from said bottom plate portion, extends towards said rotational shaft of said revolving motor, and covers the meshing portions of said sun gear and said planetary gears; and lubricating oil passages which are provided in said bottom plate portion and guide to said planetary gear bearings said lubricating oil which flowed down to said bottom plate portion said along said covering plate portion.