Crane special-purpose fault automatic-checkout system

The invention relates to a crane special-purpose fault automatic-checkout system. In crane hoisting, the crane special-purpose fault automatic-checkout system is used for detecting various crane mechanism faults such as motor overheating, hoisting overload, thickness over-limiting of brake discs of various crane mechanisms, over/under voltage of a power supply, electric leakage and power supply phase loss, automatically showing crane fault points by language and Chinese characters, and guiding a user to remove the faults in an assistant way of language and Chinese character display. A walking board of a cart main beam of the crane is provided with a main and ancillary lifting control cabinet and a cart and dolly control cabinet, a main lifting control unit, an ancillary lifting control unit, a main lifting mechanism fault detection and alarm module and an ancillary lifting mechanism fault detection and alarm module are installed in the main and ancillary lifting control cabinet, a power distribution control cabinet is installed in a driver's cage of the crane, and a power distribution loop fault detection and alarm module and a control circuit fault detection and alarm module are installed in the power distribution control cabinet.