The invention relates to an additional brake apparatus of an escalator. The additional brake apparatus comprises a brake frame, a connecting rod, a resetting portion, a pawl frame, a pawl, a support and a pawl wheel. The connecting rod is arranged at an end of the brake frame, the resetting portion can be reset by the aid of the gravity and is matched with effects of the connecting rod, the pawl frame is connected with the connecting rod, the pawl is pivotally connected onto the pawl frame, the brake frame is fixed by the aid of the support, the pawl wheel is matched with the pawl and is provided with a driving spindle, the connecting rod is pivotally connected with the pawl by a connecting rod shaft, and the pawl can be driven by the connecting rod to rotate when the connecting rod linearly moves. The additional brake apparatus has the advantages that an existing spring can be replaced by the resetting portion which can be reset by the aid of the gravity, accordingly, the additional brake apparatus is good in reliability and free of maintenance, elasticity of the spring does not need to be regulated, and the maintenance cost can be greatly reduced; the escalator can assuredly safely stop running, so that accidents can be prevented; the additional brake apparatus is simple in structure and short in brake distance and is low in deceleration during braking, and stable braking effects can be realized.
Additional brake apparatus of escalator
2015-05-20
Patent
Electronic Resource
English
IPC: | B66B Aufzüge , ELEVATORS |