Sliding bearing based on high-speed turbo expander

The utility model belongs to the technical field of sliding bearings, and particularly relates to a sliding bearing based on a high-speed turbo expander, which comprises a bearing body, and an oil inlet hole and an oil wedge are arranged on the end face of the bearing body; the tile blocks are arranged on the inner wall of the bearing body; first oil grooves are formed in the inner wall of the bearing body in the radial direction, ports of the first oil grooves penetrate through the inner walls of the pads, the oil inlet holes are communicated with the first oil grooves, the oil wedges are of involute-shaped structures in the same direction as the rotating direction of the bearing body, and flow guide grooves enabling the oil wedges to be communicated with the first oil grooves are further formed in the inner walls of the pads. The shape of the oil wedge is changed into the involute-shaped structure from the original fan-shaped structure, the involute-shaped oil wedge can ensure that lubricating oil entering