At around 3:00 p.m. on March 29th, a sudden tornado triggered a railway transportation safety crisis. The fierce wind blew a color steel roof and over 30 meters of steel frame along the railway line onto the high-speed rail contact network, directly causing the suspension of operations on the Nanning-Guangzhou and Guiyang-Guangzhou high-speed railways between Guangzhou South and Foshan West stations, as well as on the Guangzhou-Zhanjiang high-speed railway between Foshan and Liwan Depot due to foreign objects hanging on the contact network. This led to significant delays and cancellations of numerous trains, severely affecting passengers' travel and the order of railway transportation. After emergency handling by maintenance personnel, by 6:35 p.m., the foreign objects on the contact network in the relevant sections of the Nanning-Guangzhou and Guiyang-Guangzhou high-speed railways had been cleared, and the equipment failure was successfully resolved, gradually restoring the normal operation of train services.
This sudden incident once again serves as a warning: whether it is power transmission lines or high-speed rail contact networks, once foreign objects are hung, it not only causes equipment failures and power outages, but also poses a risk of electric shock and other safety accidents, resulting in huge economic losses and safety hazards. Traditional methods of clearing obstacles often rely on manual high-altitude operations or power outages for maintenance, which are not only time-consuming and labor-intensive but also carry extremely high safety risks, making it difficult to deal with such sudden foreign object faults. At this time, the HIZ-NT-QZY power line obstacle removal device developed by Guangxi Hai Zhuo Technology becomes a "key weapon" for safeguarding the safety of power lines and high-speed rail lines.
The HIZ-NT-QZY power grid obstacle removal device adopts high-energy laser cutting technology. Based on the principle of laser thermal effect, it precisely controls the laser wavelength, power and irradiation time to rapidly heat, ablate or vaporize foreign objects on the catenary and transmission lines, achieving efficient removal without damaging the line itself. It is like performing a "minimally invasive surgery without stopping the heart" for the power grid, significantly enhancing the reliability of power supply and line operation. Compared with traditional obstacle removal methods, its greatest advantage lies in "remote operation and no need for power outage". Maintenance personnel only need to set up the equipment in a safe area on the ground, aim at the foreign objects through a focusable machine vision magnification system, and the obstacle removal operation can be completed in just a few minutes after starting the equipment, completely avoiding the risks of falling and electric shock from high-altitude operations.
In terms of design, the power grid obstacle removal device fully takes into account the demands of complex outdoor operation scenarios. It adopts a compact structure design with a reasonable control of the shell size and a moderate overall weight, allowing for easy portability without the need for large transportation equipment. It can be flexibly adapted to remote transmission lines that cross mountains and valleys as well as complex terrain along high-speed railway lines, significantly reducing the carrying and handling burden on maintenance personnel. Meanwhile, the device uses air cooling for heat dissipation, with an electro-optical conversion efficiency of over 35%, featuring maintenance-free operation and outstanding cost-effectiveness. It is equipped with a high-power fiber laser, capable of clearing obstacles up to 300 meters away, with the spot size controlled within φ15mm at 150 meters, ensuring precise positioning and efficient clearance.
