Chinese robotics company Unitree Robotics has unveiled a modified version of its four-legged robotic dog B2, designed for use in firefighting.
Image source: Unitree Robotics
Equipped with a powerful water cannon with a range of up to 60 m and a flow rate of 40 l/s, as well as a module with a camera for direct video transmission to the fire service console, allowing you to assess the situation, the robotic dog can work in any extreme conditions. It can also be equipped with modules with LiDAR sensors, communication equipment, a robotic arm and other devices.
The hose for the water cannon is attached to the back of the robot dog’s body, and the working tip can be tilted at an angle of up to 85 degrees for more effective fire extinguishing. Water or foam can be used as an extinguishing agent. Moreover, the robot dog can automatically disconnect the hose and start performing other tasks without losing momentum.
The fire extinguishing system module includes sprinklers to cool the robot itself when in a fire zone with elevated temperatures. The body of the robodog, made of composite metal materials, is characterized by increased strength, as well as water resistance and protection from dust.
A modular blower unit can also be used “to safely extinguish forest fires by breaking the bond between the flame and the combustible material.”
Unitree said it has increased the joint performance by 170% over the standard B2 version, allowing the robot to climb stairs with an inclination of up to 45 degrees and overcome obstacles up to 40 cm high. In addition, the power system supports hot-swapping of the battery, allowing the robot to be used in the field for extended periods without compromising its waterproofness.
Recently, a pair of upgraded Unitree B2 robotic dogs officially joined the Qingdao (China) fire and rescue team for use in real-life situations.