All-gear automatic swing bed

An all-gear automatic swing bed comprises a TV or display collection box, a keyboard movable desk panel, a telescope handrail, a coiling block back, a numerical control panel, and an under frame, wherein the back is made by a bending roiling block modeling method and provides an installation platform for installing the numerical control panel, and the telescope handrail and the keyboard movable desk panel, the installation platform is also a back supporting point for human seating or leaning against or lying. An M type support is characterized in that the shape is like an English letter M, the M type support is composed of a fixed seat, a gasket, a metal child and mother ring, a position adjustment rod, and a fixed shaft, and active and passive gear disk meshing gaps and a height of the bed surface can be adjusted. A Z type balance eccentric shaft is characterized in that the shape is like an English letter Z, and the Z type balance eccentric shaft is composed of two eccentric shafts and an eccentric arm, and