Large engine spindle annular oiling device

The invention belongs to the technical field of engine lubricating systems and particularly relates to a large engine spindle annular oiling device. A current lubricating mode causes wasting of a large amount of grease and accumulation of greasy dirt in an engine, which go against long-term usage of the engine. The annular oiling device provided by the invention comprises a clamping unit, a plastering unit and an oil dripping unit; the clamping unit comprises a main oil box and a clamping screw, and the main oil box is connected with an engine spindle through the clamping screw; the plasteringunit is mainly composed of metal sheets which are N metal circular ring pieces with the fixed size and gradient thicknesses; and the oiling device comprises an oil conveying pipe and an oil drippingnozzle, and the oil dripping speed is controlled by cooperating with spindles of different sizes and different rotating speeds. By means of rotating of the spindle, the metal sheets are driven to reciprocate by means of gyrosc