Roller adjusting structure of treadmill, and treadmill

A roller adjusting structure of a treadmill, comprising a corner-protecting structure, a roller assembly, a running platform support, and an adjusting bolt;

• wherein the corner-protecting structure is arranged at one side of one end of the roller assembly, the corner-protecting structure is provided with a first through hole, and one end of the roller assembly is provided with a threaded through hole;
• the running platform support is located at one side, away from the corner-protecting structure, of the roller assembly, and the running platform support is provided with a second through hole;
• the adjusting bolt passes through the first through hole, the threaded through hole and the second through hole in turn, and a first end part of the adjusting bolt extends out of the second through hole;
• wherein the roller adjusting structure of the treadmill further comprises a clamping assembly, which is located at one side, away from the threaded through hole, of the second through hole and connected to the running platform support;
• the clamping assembly is provided with a limit groove, the first end part of the adjusting bolt is located in the limit groove, and a side wall of the first end part is abutted against a groove wall of the limit groove, thus enabling the clamping assembly to clamp the side wall of the first end part of the adjusting bolt.