The wire rope catcher is installed along the road with the pipe tensioner passing between the upper and lower brake blocks of the wire rope catcher. When the traction wire rope is in normal operation, the upper and lower brake blocks do not move. When the speed sensor detects that the traction wire rope is running faster than normal. At 130% speed, the signal control box outputs a signal to control the solenoid valve to control the booster cylinder. The upper brake block is pushed by the slide bar, the upper brake block pushes the traction wire rope, and the upper and lower brake blocks clamp the traction wire rope. When the elastic tensioner support wheel assembly used as a load chair, the wire rope will not wear the brake block. When the wire rope breaks, the wire rope loses tension and the tail wheel moves backward. After the deviation sensor is triggered, the catcher executes the wire rope. Catch brake