Planetary line transmission, power assembly and vehicle

A planetary line transmission, comprising:

• a housing;
• a sun gear fixed in the housing;
• a ring gear sleeved on the outside of the sun gear;
• a plurality of planetary gears;
• and
• a planetary carrier;
• wherein each of planetary gears is respectively sleeved on a planetary shaft and is meshed with the sun gear and the ring gear at the same time;
• and the planetary carrier is fixedly connected to each of the planetary shafts;
• wherein the planetary line transmission, further comprising:
• a sliding cylinder sleeved on the outside of the ring gear and configured to rotate synchronously with the ring gear and to move axially relative to the ring gear;
• a sliding sleeve sleeved on the outside of the sliding cylinder and configured to rotate synchronously with the sliding cylinder and to move axially relative to the sliding cylinder;
• an elastic member mounted between the sliding cylinder and the sliding sleeve;
• a first friction ring mounted on the sliding cylinder and configured to be capable of rotating synchronously with the sliding cylinder and moving axially relative to the sliding cylinder;
• a second friction ring mounted on the planetary carrier and configured to be capable of rotating synchronously with the planetary carrier and moving axially relative to the planetary carrier;
• a third friction ring mounted on the sliding sleeve and configured to be capable of rotating synchronously with the sliding sleeve and moving axially relative to the sliding sleeve;
• a fourth friction ring mounted on the housing and configured to be capable of axial movement relative to the housing;
• and
• a controller mounted on the housing and configured to oppose the fourth friction ring;
• wherein the first friction ring and the second friction ring are alternately distributed and mounted between the sliding sleeve and the sliding cylinder and are configured to engage with the action of the elastic member and disengage with the action of the controller;
• and
• the third friction ring and the fourth friction ring are alternately distributed and mounted between the controller and the sliding sleeve and are configured to be capable of being separated or engaged by the action of the controller.