In recent years, with the rapid increase of motor vehicle ownership, as well as the laws and regulations of the relevant ancillary parking mandatory requirements, mechanical parking equipments have also been a rapid growth. The large increase of the mechanical parking device, also inevitably require appropriate supporting measures, such as after-sales service would be enhanced. However, every year there are some mechanical parking device security incidents due to various reasons, cause direct economic losses of the unit owners, and sometimes pose a threat to the personal safety, of which, poor management, poor sense of safety, maintenance work is not standardized to become one of the main reasons.