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Why is the gradient of escalator (a kind of elevator) set at 27.3? What is this 0.3 degree?
First of all, the inclination angle of escalator refers to the included angle between the running route of steps in the inclined section and the horizontal plane. The European standard EN 1 15 1. 1 clearly stipulates this value: the inclination angle of the escalator should not exceed 30. Escalators with running speed not exceeding 0.5m/s and lifting height not exceeding 6m,

With the same lifting height, 35 escalators occupy less shopping space than 30 escalators, so some profit-oriented businesses prefer 35 escalators.

The recommended ratio of step height and step distance of 16/3 1 is 27.3. At present, the ratio of step height to step distance of common stairs is 16/3 1. Obviously, if escalators and ordinary stairs are arranged side by side in a shopping mall, the 27.3-degree escalator will look more harmonious.

Extended data:

The driving machine is mainly composed of motor, worm gear reducer, sprocket and brake. As for the installation position of the motor, it can be divided into vertical and horizontal. At present, most escalators use vertical drives.

Its advantages are compact structure, less land occupation, light weight and easy maintenance; Low noise and vibration.

In particular, the integral drive machine has a motor rotor shaft and a worm shaft, so it has good balance, can eliminate vibration and reduce noise; Escalators with large carrying capacity and small lifting height can be driven by one driver, while escalators with medium lifting height can be driven by two drivers.

Baidu encyclopedia-escalator

Baidu encyclopedia-drive machine

People's Network-The First Escalator in China