Transmission is trailed to tri -axial linkage solar energy

The utility model relates to a transmission is trailed to tri -axial linkage solar energy, it includes horizontal drive rotary speed reducer (1), vertical drive rotary speed reducer (2) and the rotatory rotary speed reducer (3) of expansion, rotatory base top and bottom of expanding rotary speed reducer (3) is provided with first pivot (10) and second pivot (11) respectively, second pivot (11) both ends are articulated mutually with the base of horizontal drive rotary speed reducer (1) and vertical drive rotary speed reducer (2) respectively, be connected through crank (8) and connecting rod (9) between the output shaft both ends of vertical drive rotary speed reducer (2) and first pivot (10) the both ends. The utility model relates to a transmission is trailed to tri -axial linkage solar energy, its compact structure, bearing capacity is strong, and transmission precision is high, and the good reliability can effectively improve tracker's tracking efficiency, increases tracker's function diversity.