Lubricating device for pulley

A pulley lubrication device comprises a bearing assembly. The base of the bearing assembly is provided with atomized lubricant spray holes. The interior of the base is also provided with an oil supply channel and a gas supply channel which are respectively connected with a circumscribed oil supply valve and a circumscribed gas valve. The oil outlets and the gas outlets of the oil supply valve and the gas valve are collected at the spray holes. The base can be provided with a shrinkage pool which is internally embedded with an anvil core. The central of the anvil core is provided with a small hole which serves as an atomized lubricant spray hole. The bottom entrance of the atomized lubricant spray hole takes a coniform shape. The bearing assembly takes a PI shape in the vertical view. A curtain board of the bearing assembly which is parallel to the base can be provided with a through hole which allows a wheel axle to pass through. The through hole has the same axle with the spray hole of the base broadly. A riser of the through hole is internally provided with a flexible microswitch. Compared with the prior art, the utility model can be used for coating lubricant on the arbor hole inner wall of a sliding pulley, the sides of all sliding pulley, and the sliding frame contacting with the sides of the sliding pulley. The sliding pulley assembled has clean appearance, no oil pollution phenomenon, at the same time, greatly increases the production efficiency..