ANTI-THEFT MACHINERY LOCK

The utility model belongs to an improved anti-theft machinery lock which achieves the anti-theft goal by mainly placing steel tubes in cylinder holes of a lock body. An arc-shaped groove is arranged on lock cores corresponding to the cylinder holes placing the steel tubes, one end of the groove is provided with cylinder holes which correspond to the cylinder holes on the lock body, and the placing number and positions and the inserting depth of the steel tubes in the lock cores all can be discretionarily arranged, combined and designed. The utility model has the advantages of good anti-theft effect and simple production without changing other structures of the lock, and other components are made of the prior art so that the utility model can be produced by the original lock producing factories.