防坠天轮系统如图］所示。它和提升天轮相互垂直，而且都固定在天轮平台上。当提升钢丝绳断绳时，防坠天轮立即制动，制动钢丝绳在防坠天轮上摩擦攸罐笼木坠。防坠天轮如图2所示。提升钢丝绳断绳时，罐笼重量攸制动钢丝绳张力骤然增大，支承弹簧被压至下死点，天轮外缘齿轮和在 Falling wheel system shown in Figure]. It and the lifting of the wheel perpendicular to each other, and are fixed on the day wheel platform. When lifting the rope broken rope, anti-fall heaven wheel immediately brake, brake wire rope in the fall of heaven wheel friction You Yau wooden pendant. Falling day wheel shown in Figure 2. When lifting the wire rope breaking rope, the weight of the canister brakes sudden increase in tension, the supporting spring is pressed to the bottom dead center,