How does the elevator use the safety rope to trigger the action of the safety tongs?
When the elevator reaches the speed limit operation value after speeding, the speed limiter is thrown on the block to open, triggering the rope clamping device action, and the speed limiting rope (safety rope) stops moving
At this time, the elevator still moves, so that the speed limit rope lifts the movable wedge on the safety clamp, and the gap between the wedge and the guide rail is continuously reduced until the clamping rail is clamped, and the elevator stops running. That's the safety tongs.
Safety rope is such a device: it is an auxiliary rope which is guided by the steering wheel of the engine room (pulley). One endThe car is fixed on the car and the other end is fixed on the counterweight clamp rod. When the suspension steel rope is broken, the car and counterweight are brokenDon't fall down, although the counterweight does not have its own speed limiter, the action can be triggered by a falling car. securityThe requirements and specifications of the rope are the same as that of the speed limiter steel cable.Taking into account that when the elevator rated speed is higher, if the car fell down, affecting the safety rope and trigger the counterweight to the securityThe impact of the rope will be great and may cause damage to the safety rope. Therefore, the safety rope can be used to trigger the counterweightAt rated speed not exceeding 1m/s.Caution: the safety rope is not permitted to trigger the car safety tongs under any circumstances.
