LIFT OF MACHINE WORK DEVICE FOR FOUNDATION WORK

摘要

PROBLEM TO BE SOLVED: To lengthen a lifting stroke by shortening the total length of a lift, and to miniaturize the whole machine.;SOLUTION: Oil feeding tanks 24 and 24 are arranged on both sides, left and right, by using clearance between guide gibs 19 and respective speed reducers 21 of driving motors 20 and 20 at an upper part of a leader 3 side surface, which has been a dead space of a guide gib frame 16 of the lift 15. The left and right oil feeding tanks 24 and 24 are communicated by a communicating tube 26. Lubricating oil is dripped to lower pinions 18 and 18 from the lower supply pipe 26 of one oil feeding tank 24. The lubricating oil is supplied to a meshing part of a rack 13 and the pinions 18 and 18.;COPYRIGHT: (C)2003,JPO