Hydraulic oil supplementing device

The utility model provides a hydraulic oil recharging device which comprises a main oil tank, an oil recharging tank is fixed at the bottom of the main oil tank, one side of the main oil tank is connected with a main oil pipe, and a cleaning rod moves in the synchronous direction along with rotation of a gear and a gear ring under the matching action of a transverse sliding rail and a transverse sliding block as well as a vertical sliding rail and a vertical sliding block. Under the elastic force action of the spring, the cleaning rod is always in extrusion contact with the inner side surface of the gear ring and the outer side surface of the gear, oil suction and oil pressing are achieved through the driving mechanism by utilizing the change of the inter-tooth sealing volume, and the oil pressing and oil suction rate can be achieved by controlling the rotating speed of the gear through the motor; according to the oil supplementing device, wall scraping cleaning is conducted on the tooth space surface of the