In live-line operations on power grids, the most challenging problems are often not large hanging objects, but rather small foreign objects entangled at the suspension points of conductors or in the gaps of insulator strings - a thin kite string, a fragment of plastic film, or a piece of fallen cable tie. Traditional mechanical devices have difficulty reaching these areas, and manual tower climbing is risky and time-consuming. How can we achieve precise removal of these objects without power outages or climbing?
The HIZ-NT-QZY transmission line laser obstacle removal equipment from Guangxi Hizoo Technology, with its high-precision aiming system and outstanding complex position processing capability, has pushed the accuracy of laser obstacle removal to a new level. Equipped with a focusable machine vision magnification system, it supports high-magnification electronic zoom and auto-focusing, along with high-definition imaging and real-time image transmission. This enables operators to clearly identify fine foreign objects wrapped around the conductors at a distance of over 100 meters on the screen. The effective removal distance can reach up to 300 meters, and the entire process from target detection to precise locking is fully visualized and controllable.
The laser obstacle removal system is equipped with built-in automatic ranging and dynamic focusing technology. The laser spot diameter is controlled within 20mm, and the aiming accuracy reaches the millimeter level. Whether the foreign object is at the lowest point of the sag or at the angle of the crossarm, it can achieve precise irradiation of "point and shoot", ensuring that the obstacle removal process is accurate and successful in one attempt.
The traditional methods of clearing obstacles rely on insulated boom trucks, insulated rods or robots. However, they often fail to deal with situations where the mechanical arms cannot reach or grasp, such as the suspension points of conductors, the gaps between insulator strings, and the areas near tension clamps. The HIZ-NT-QZY adopts a non-contact "light blade" technology. The laser beam can be inserted from any angle, without being restricted by space. The operator can remotely aim from the ground, and the laser travels in a straight line to precisely reach any optically visible position. Whether it is the entangled objects between the skirts of insulator strings or the residual hanging objects in the gaps of parallel groove clamps, they can be quickly and safely ablated and removed. It completely breaks the predicament of mechanical devices that "cannot reach, cannot hold, and cannot pull off".
Among the small foreign objects, kite strings (made of nylon or Kevlar) are the most troublesome: with a diameter of only 1-2 millimeters and extremely strong toughness, traditional methods are prone to breaking them and leaving longer segments, which instead increases the risk. The HIZ-NT-QZY has specially optimized the optical path for such fine filament targets. The laser wavelength (1080nm) is highly compatible with the absorption peak of non-metallic foreign objects, concentrating energy and minimizing the heat-affected zone.
