I. Introduction
The transportation of cargo in mountainous areas has been an important difficulty in engineering construction, such as the installation of electric towers and communication base stations in mountainous areas. During the above construction, it is often necessary to transport cargo between the mountain top and the foot of the mountain. Compared to other transportation ways, such as trucks, the rail transit equipment has advantages of small track area and convenient installation and disassembly. According to achieve automation and unmanned operation, it can reduce personal safety risks during cargo transportation and improve transportation efficiency[1].