Angle steel sliding wire is a traditional dragging method. The conductor is directly exposed to the air, which is subject to corrosion, oxidation, dust accumulation, oil accumulation, and putty are mixed together to form insulating grease, which directly affects the conductivity. Run the machine after power failure Still relying on its mechanical inertia to continue to operate, it is easy to lose control, which may cause accidents. The shell and supporting parts of the safety sliding wire transmission device are made of engineering plastics, which have good insulation and corrosion resistance, and have certain strength. The conductor of the slide wire can not only conduct electricity but also play the role of a guide rail. The tubular slide wire is a plurality of guide rails integrated into a conduit, and the rolling trolley that maintains normal pressure contact with the guide rail supplies power. There is a convex groove at the back of the conduit, which has good rigidity and can ensure that the brush pressure is not affected by the impact of trolley movement or vibration. There will be no arc when the guide rail and the surface of the brush are in contact, and the safety performance is high. The safety slide wire can be installed on the same side of the driver, and there is no danger for operators and maintenance personnel to touch the outside of the electric body. Therefore, it is recommended to choose a safety sliding contact line. The cable slide has good flexibility, high temperature resistance, and good safety. It may be widely used in crane power supply, and can be used in inflammable and explosive places. (Replace the mobile small wheels in the cable slide with Polyurethane wheel or copper wheel can be used).