Convenient hospital bed with hand-operated aggregate unit

The utility model relates to a convenient hospital bed with hand-driven interlocking device. Bed plate is made up of plate for backside, plate for buttocks and plate for crus. The plate for backside is hinged with the plate for buttocks, and the plate for buttocks is hinged with the plate for crus by gemel. The plate for buttocks is installed on support arm of bed frame. Principal bearing block and assistant bearing block are provided below middle of panel of two sides of the bed frame. Drive shafts of handwheel are sleeved inside the principal bearing block on both ends of the bed frame. Small taper gear in gear box is sleeved on the drive shaft. Stem of drive screw rod is inserted into pushing bearing of the gear box, inner end of which is sleeved by big taper gear matching the small taper gear. The driven screw rod is sleeved with an integral nut inside the assistant bearing block is inserted support bearing. One end of rotating arm is hinged with the integral nut, and the other end is fastened on shaft cover. The shaft cover is sleeved on the support bearing. Skeleton of the plate for backside is arranged on the shaft cover. The utility model has advantages of simply operation; the plate for backside is interlocked with the plate for buttocks; the utility model can be easily adjusted to reduce labor force of medical staff.