Linkage type lifting mast and its system

A lifting mast, comprising:

• a bottom layer component set, said bottom layer component set comprising a base, a support tube, a bottom linkage rod, an inner bushing and an outer bushing, said bottom linkage rod being set on said base, said support tube being sleeved on said bottom linkage rod with a bottom end thereof set on said base, said support tube having an inner peripheral wall thereof provided with a guide rail that extends from said support tube along the axis of said support tube near the said base, said bottom linkage rod comprising a threaded section located on an outer surface thereof, said inner bushing of said bottom layer component set being set at a top of said support tube with a bottom end thereof set in said support tube, said outer bushing of said bottom layer component set being set on a top of said inner bushing of said bottom layer component set and an outer peripheral wall of said support tube;
• a first moving component set, said first moving component set comprising a first moving base, a first moving tube, a hollow connecting rod and a plurality of balls, said first moving base being provided with a screw hole to be screwed to said threaded section of said bottom linkage rod of said bottom layer component set, said balls of said first moving component set being set between said screw hole of said first moving base of said first moving component set and said threaded section of said bottom linkage rod of said bottom layer component set, said first moving tube leaning against said first moving base, said first moving base having an outer peripheral wall thereof recessed to form a guide groove, said guide groove being embedded in said guide rail of said support tube of said bottom layer component set, said hollow connecting rod being set and screwed to said threaded section of said bottom linkage rod of said bottom layer component set and linked by the rotation of said bottom linkage rod, said hollow connecting rod having a bottom end thereof set in said first moving base, said first moving tube being provided with a guide rail at an inner peripheral wall thereof, said guide rail of said first moving tube extending from said first moving base along the axis of said first moving tube, said hollow connecting rod comprising a threaded section located on an outer surface thereof, said first moving tube of said first moving component set being set through said outer bushing and said inner bushing of said bottom layer component set and abutting on said first moving base;
• and
• a second moving component set, said second moving component set comprising a second moving base, a second moving tube and a plurality of balls, said second moving base being provided with a screw hole and used to screw said threaded section of said hollow connecting rod of said first moving component set, said balls of said second moving component set being set between said screw hole of said second moving base of said second moving component set and said threaded section of said hollow connecting rod of said first moving component set, said second moving tube abutting against said second moving base, said second moving base having an outer peripheral wall thereof recessed to form a guide groove, said guide groove being embedded in said guide rail of said first moving tube of said first moving component set.