Aiming at the potential safety problems caused by excessive growth of branches around the overhead high-voltage line corridor,a branch cutting robot driven along the line corridor was designed.The influence of wind on the transmission line was analyzed,and the theoretical pruning area of the high-voltage transmission line corridor was obtained.Based on this,the principle configuration of the branch cutting robot was proposed.Taking the 110 kV high-voltage transmission line as an example,the virtual prototype model of the robot was designed,and its operation mode was planned.The kinematics model of the robot was established by using the D-H parameter method,and the end operation space was solved.The rationality of the robot configuration design was verified by comparing the theoretical pruning areas.Finally,the experimental prototype of the branch cutting robot was developed and simulated on the self built line.The experimental results show that the joint motion performance of the experimental prototype is good,and it can effectively prune the branches around the line.