Rotary joint of telescopic rod bearing high load

A rotary joint of a telescopic rod for connecting a bottom pipe and a support pipe and bearing a high load, the rotary joint of the telescopic rod comprising:

• a base, comprising a first clamp for clamping the bottom pipe and a first pivot plate, wherein the first pivot plate is provided with a guide groove;
• a support base, provided with a second clamp to clamp the support pipe and a second pivot plate, wherein the second pivot plate is provided with a through hole, the first pivot plate and the second pivot plate are pivoted together at a pivot point, and when the first pivot plate and the second pivot plate rotate relatively, the through hole is kept to align to the guide groove;
• and
• a screwing member, penetrating through the through hole and the guide groove to clamp and fix the first pivot plate and the second pivot plate, so that the first pivot plate and the second pivot plate cannot rotate relatively.