Nowadays, crane operators attach great importance to the maintenance of crane connecting components. Maintenance should be divided into internal maintenance and external maintenance. Internal maintenance refers to the maintenance of crane engines, liquid oil, spark plugs, etc., while external maintenance refers to the maintenance of crane tires, wipers, etc. Some repair shops have problems such as untimely maintenance, unclear responsibilities or lack of knowledge of crane connectors, shirking maintenance, inferior parts, exaggerating shortcomings, excessive maintenance for profit, high maintenance costs, and large differences in damage assessment. In addition, due to the high technological content and specialization of cranes, there is a serious information asymmetry between consumers and businesses. Consumers are in a disadvantaged and forced position, and their rights have been repeatedly violated.

Therefore, drivers nowadays pay more attention to the maintenance of cranes, as maintenance can effectively reduce the number of repairs.