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For elevators with machine rooms, why is the height of the top floor higher than the normal floor?
The main reason is the influence of equipment space and installation layout.

1. An elevator with a machine room needs to be equipped with components such as a drive host, a control cabinet and a speed limiter, which require more space than an elevator without a machine room.

2. The elevator with machine room should reserve a safe space to prevent accidents such as roof rushing.

Extended data:

Classification of elevators:

1. Passenger elevator, designed for transporting passengers, needs perfect safety facilities and certain interior decoration.

2. Freight elevators are mainly designed for transporting goods, usually accompanied by an elevator.

3. Medical elevators are used to transport sickbeds, stretchers and medical vehicles. This car is long and narrow.

4. Miscellaneous elevators are designed for libraries, office buildings and restaurants to transport books, documents and food.

5. Sightseeing elevator, the car wall is transparent, which is used by passengers for sightseeing.

6. Vehicle elevator, used as an elevator for transporting vehicles.

7. Marine elevators, elevators used in ships.

8. Elevator for construction and elevator for construction and maintenance.

9. Other types of elevators, in addition to the above-mentioned commonly used elevators, include some special-purpose elevators, such as cold storage elevators, explosion-proof elevator elevators, mine elevators, power station elevators, fire elevators, diagonal elevators and nuclear island elevators.

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