Track link plate and track link assembly

A track link assembly, comprising:

• at least two pin assemblies, each of the pin assemblies comprising a pin sleeve and a pin bolt, each of the pin bolts inserted into each of the pin sleeves;
• and
• at least two track link plates, each of the track link plates comprising:
• a main body;
• a first shaft hole passing through a first end of the main body;
• a second shaft hole passing through a second end of the main body;
• two through holes arranged in an interval between the first shaft hole and the second shaft hole, and passing through the main body along a first axial direction of the first shaft hole;
• a supporting rib located between the two through holes, wherein a thickness of the supporting rib is substantially uniform;
• and
• a first extending portion protruding outward from a second surface of the main body, located between a rotating inner edge of the main body and an edge of each of the through holes, and extending from the second end toward the first end;
• wherein, a distance between the rotating inner edge of the main body and a rotating outer edge of the main body is a total height, and a distance of the first extending portion from the edge of each of the through holes to the rotating inner edge of the main body is greater than or equal to one third of the total height;
• wherein, one of the pin assemblies passes through and is disposed on the first shaft hole of one of the track link plates from a first surface of the one of the track link plates;
• the other of the pin assemblies passes through the first shaft hole of another of the track link plates and then passes through and disposes on the second shaft hole of the another of the track link plates, and the second shaft hole of the one of the track link plates is for the pin bolt of the other of the pin assemblies to insert in.