CONNECTING ASSEMBLY APPLIED TO PHOTOVOLTAIC TRACKING BRACKET, MAIN BEAM STRUCTURE, AND TRACKING BRACKET

A connecting assembly applied to a photovoltaic tracking bracket, a main beam structure, and a tracking bracket. The connecting assembly comprises: a shaft tube (1), the shaft tube (1) comprising a cylindrical shaft tube body (11) and limiting members (12) provided at two ends of the shaft tube body (11); and two sets of connecting units (2) respectively rotatably sleeved at the two ends of the shaft tube body (11). When the connecting units (2) are sleeved on the shaft tube (1), the limiting members (12) limit movement of the connecting units (2) in an extension direction of the shaft tube body (11) in one direction. When the photovoltaic tracking bracket operates, by means of the relative rotation between the shaft tube (1) and the connecting units (2), the additional torque between different sections of main beams (3) can be released at the connecting assembly to release torque, the load on the main beam structure is reduced, and the service life of the main beam structure is prolonged. Moreover, the main