The monkey car extensively use in mine personal transportation, and driving spindle is the parts that bear the load is the biggest as a transport means that bear the radial pull that the drive wheel rotated required big moment of torsion and followed the steel wire rope orientation simultaneously, some impact load receive in the regular meeting in the time of still, and these factors all may shorten the life of main shaft, easily crack or even split. After the fracture, because inertia steel wire rope drives the driving spindle departure, cause the accident and be dangerous, a monkey car broken shaft protection ware, including the disk bearing frame, the disk bearing frame is the loop type rotary disk, disk bearing frame bottom welded fastening chassis, the disconnected shaft distortion alarm of disk bearing frame externally mounted, fixed chassis welding carousel crosspiece assembly, carousel crosspiece assembly includes rotary barrel, baffle, friction disc, rotary barrel installs the plate washer both sides are in the coplanar with the baffle, two are connected in baffle one side the friction disc. When disconnected axle takes place the time, avoid driving spindle to fall to the ground, cause the protection to take the damage that personnel are not hurt, do not reduce mechanical equipment.