Rotating mechanism for loading and unloading shelves in library

The invention discloses a rotating mechanism for loading and unloading shelves in a library. The rotating mechanism comprises a base, a bottom plate and a vertical plate, wherein a fixed circular plate is installed at the top of the base through screws, a rotating circular plate is arranged at the top of the fixed circular plate, the bottom plate is installed at the top of the rotating circular plate through bolts, and the vertical plate is welded to one end of the bottom plate; an end plate is welded to one side of a top end of the vertical plate, a storage groove is formed in a lower end of the end plate, a connecting frame is mounted at the top of the storage groove through screws, a bearing is mounted at the top of the connecting frame through a mounting hole, and a vertical frame is mounted between one end of the bottom plate and a top end of the vertical plate through bolts. According to the rotating mechanism for the library upper and lower shelves, books can be lifted to a certain height, taking is co