Free-of-disassembly lubricated heading machine star wheel driving device

The utility model discloses a free-of-disassembly lubricated heading machine star wheel driving device. The free-of-disassembly lubricated heading machine star wheel driving device comprises a shell, a star wheel, a rotating medium, a floating seal holder, a rotating disk and a motor seat for installing a hydraulic motor, wherein the rotating medium is a pivoting support, and a lubricating grease filling port is formed in the rotating disk and is sealed by using a screw-plug; an O-shaped seal ring is used for sealing between the hydraulic motor and the motor seat, and a powerful floating seal is used for sealing between the rotating disk and the floating seal holder. As the pivoting support is used for replacing two conical roller bearings, the failure of the driving device, which is caused by bearing clearance, is avoided, so that the reliability of the free-of-disassembly lubricated heading machine star wheel driving device is improved. The free-of-disassembly lubricated heading machine star wheel driving d