Anti-plugging automatic lubrication system for shield machine

The utility model provides an anti-plugging automatic lubrication system for a shield machine. The anti-plugging automatic lubrication system for the shield machine comprises a grease lubrication pump, a main grease conveying pipe, a grease filter and a plurality of branched grease conveying pipes, and is characterized in that: each branched grease conveying pipe is provided with a one-way electromagnetic valve and an electronic flow meter; signal output ends of the electronic flow meters are connected with a signal input end of a shield machine controlling system; and a signal output end of the shield machine controlling system is connected with signal input ends of the one-way electromagnetic valves. The automatic lubrication system has low cost, is easy to operate, can be realized only by replacing lubrication grease distributing valves through a plurality of one-way electromagnetic valves and arranging the flow meters on pipelines, is easy to popularize and use, brings great convenience to equipment maint