Four-point type vertical three-dimensional seedling raising equipment

The invention discloses four-point type vertical three-dimensional seedling raising equipment which comprises a seedling raising base, seedling raising side frames, seedling raising trays, a chain anti-twisting guide device, a tray anti-turning guide device and a top end platform. Wherein a conveying chain wheel and a conveying chain are mounted on the seedling raising side frame, and a plurality of groups of triangular connecting rod frames are arranged on the periphery of the conveying chain; the chain anti-twisting guide device is used for limiting the inner ends of the two supporting connecting rods to vertically move along the vertical conveying section of the conveying chain so as to prevent the conveying chain from twisting; the tray anti-overturning guide device comprises anti-overturning connecting rod assemblies and constraint guide rails matched with the anti-overturning connecting rod assemblies, and in the process that the seedling raising trays are driven by the conveying chain to be conveyed, a