Turntable of a rotary crane

Turntable for a king post rotary crane having a central column or pylon structured and arrange to be anchored to a base and on which the entire crane is suspended on an upper end of the column or pylon and supported on a lower end of the column or pylon, comprising

• a support frame structured and arranged to be slid on and suspended from the pylon,
• coupling devices connected to the support frame and structured and arranged to couple a crane boom thereto,
• support devices structured and arranged to allow the support frame to revolve on a longitudinal axis of the pylon,
• said support devices having an upper support for the suspension of the support frame on an upper end section of the pylon and a lower support for the suspension of the support frame on a lower section of the pylon, and
• said lower support having a bearing journal structured and arranged to at least partially encircle the pylon,
• wherein said bearing journal of said lower support is divided,
• said support frame has an open longitudinal side by which said support frame, with said divided bearing journal, is structured and arranged to slide radially on the pylon,
• said support frame comprises two side pillars facing each other and joined together along a first longitudinal side of said support frame,
• said pillars not being joined together on a side opposite to the first longitudinal side of said support frame, and
• said turntable is structured and arranged to be rotatably secured to the pylon by transversely moving into engagement with the pylon.