Trolley positioning structure, turntable device and water pump paint spraying system

The utility model discloses a dolly positioning structure, turntable device and water pump paint spraying system, dolly positioning structure is used for the loading dolly can be stably stored on the turntable device, the jacking device includes the drive stand column that can pass through the turntable device, and the upper end of the drive stand column is equipped with the special-shaped notch, and the special-shaped notch is equipped with the special-shaped notch. A supporting part located at the upper end of the driving stand column is formed by the special-shaped notches, a coupling fixing device is arranged at the bottom of the loading trolley, and a coupling groove is formed in the coupling fixing device, so that after the driving stand column is embedded into the coupling groove, the driving stand column can basically position the trolley. The outer edge of the coupling groove or the bottom of the carrying trolley is supported by the supporting part, so that the carrying trolley is fixed in an auxilia