Lamp base and U-shaped rack connecting waterproof structure

The utility model discloses a lamp base and U-shaped rack connecting waterproof structure. The lamp base and U-shaped rack connecting waterproof structure comprises an X-axis synchronous pulley (1), a main shaft sleeve (2), a main shaft bearing (3), a main shaft bearing block (4), an X-axis main shaft (7), a U-shaped arm transverse beam (8), a base cover plate (10) and a U-shaped rack (12); the X-axis main shaft (7) is arranged above the base cover plate (10), the main shaft bearing (3) is arranged in the main shaft bearing block (4), the main shaft bearing block (4) is installed on the X-axis main shaft (7) in a sleeving mode, a through hole is formed in the U-shaped arm transverse beam (8), and the X-axis main shaft (7) passes through the through hole in the U-shaped arm transverse beam (8) to be connected with the X-axis synchronous pulley (1). The U-shaped rack (12) is fixed to the U-shaped arm transverse beam (8). A reset ring (5) is further arranged between the X-axis main shaft (7) and the main shaft bearing block (4) and embedded into the X-axis main shaft (7). The main shaft sleeve (2) is further arranged between the X-axis main shaft (7) and the X-axis synchronous pulley (1) and installed at the top end of the X-axis main shaft (7) in a sleeving mode. By means of the lamp base and U-shaped rack connecting waterproof structure, the using limitation to the lamp in the outdoor environment is eliminated; the lamp base and U-shaped rack connecting waterproof structure is more suitable for meeting requirements for lamp functions nowadays.