Planetary transmission gearbox lubricating structure

The utility model discloses a planetary gearbox lubricating structure which comprises a box body used for containing lubricating oil, and a first-stage planet carrier and a second-stage planet carrier which are rotatable are arranged on the two sides of the box body. An oil suction pump is arranged on the inner wall of the box body and is communicated with the interiors of the first-stage planet carrier and the second-stage planet carrier; the first-stage planet carrier is in transmission connection with the oil suction pump through the gear transmission mechanism, when the first-stage planet carrier rotates, rotation motion can be transmitted to the oil suction pump through the gear transmission mechanism, force of the rotation motion serves as power for driving the oil suction pump, and at the moment, the oil suction pump pumps lubricating oil from the box body. And lubricating oil is changed into pressure oil and pumped into the first-stage planet carrier and the second-stage planet carrier, so that a sun