Conveyor frame

A conveyor frame comprising:

• a support frame having a long main body and two folded pieces disposed in two sides of a longitudinal axis of said long main body, said two folded plates being provided coaxially with a locating hole whereby said locating hole is provided in a hole edge thereof with an annular protrusion;
• a round rolling shaft pivoted between said two locating holes of said two folded plates;
• a ball frame having a long body and two long cover plates extending vertically from two sides of said long body, said cover plates provided with a long hole and a shoulder of a predetermined length and extending toward another cover plate from a junction of the long side and the body, said ball frame being mounted between said two folded plates such that two annular protrusions of said support frame are extended into said long holes, and that said ball frame can be displaced along a longitudinal axis of said long holes, and further that said ball frame is turned leftward and rightward on said annular protrusions acting as axes at such time when one end of the longitudinal axis of said long hole presses against said annular protrusions, and further that said ball frame is located at such time when other end of the longitudinal axis of said long hole presses against said annular protrusion such that the shoulders of said cover plates are located on two sides of said folded plates of said support frame;
• and
• a plurality of balls whereby said balls are arranged at a predetermined interval on one side of said long body of said ball frame.