It is not allowed to install an elevator on the first floor of Changsha.

all owners must agree to install elevators in the old buildings. If one of them does not agree, it cannot be installed. In addition, if buildings are added in urban planning areas, legal land use rights must be obtained before applying for planning permission.

Modern elevators are mainly composed of traction machine (winch), guide rail, counterweight device, safety device (such as speed limiter, safety clamp and buffer), signal control system, car and hall door. These parts are installed in the shaft and machine room of the building respectively.

usually, the friction transmission of steel wire rope is adopted. The steel wire rope bypasses the traction sheave, and its two ends are respectively connected with the car and the counterweight. The motor drives the traction sheave to lift the car. Elevator requires safety and reliability, high conveying efficiency, accurate leveling and comfortable ride. The basic parameters of elevator mainly include rated load, number of passengers, rated speed, car outline size and shaft type.