Vacuum oil injection device and method for oil bearing

The invention provides a vacuum oil injection device and method for an oil bearing, and relates to the technical field of oil bearing production. According to the vacuum oil injection device for the oil bearing, a tank body is arranged on the horizontal part of the upper part of a rack, electric heating equipment is arranged on the lower inner wall of the tank body, an upper cover is arranged on the upper top face of the tank body, a sealing ring is arranged on the inner side of the upper top face of the tank body, and a thermometer, a motor and a pressure gauge are arranged on the upper top face of the upper cover; and the output end of the motor is fixedly connected with a sliding plate, the lower bottom face of the sliding plate is fixedly connected with a connecting rod, and the lower end of the connecting rod is fixedly connected with a containing cylinder. According to the vacuum oil injection device for the oil bearing provided by the invention, heating is carried out in cooperation with the action of the electric heating equipment during vacuumizing, and through the cooling action of the electric heating equipment and a liquid nitrogen tank, lubricating oil gradually enters under the action of cold and hot deformation of the oil bearing and also receives the action of rotation and vibration in the process, so that compared with the traditional technology, the oil quantity is increased by 15 percent to 18 percent, and the service life is also prolonged by 55 percent to 62 percent.