How many people are there for construction workers
Different models of different sizes, small can multiply 10 people, this time see a big, can take 14 people
The elevator is a vertical elevator with electric motors, which is equipped with box pods for multi-storey building and carrying goods. There is also a terrace, which is running continuously on the crawler, commonly known as escalator or automatic walkway. A fixed lifting device for the floor. Vertical elevator has a car, running on at least two columns of the vertical or Angle is less than 15 ° between the rigidity of rail. The size and structure of the car is convenient for passengers to enter or unload cargo. Traditionally, the elevator is the general term for vertical transportation in buildings, no matter how they are driven. Speed can be divided into low speed elevator (1 m/s), rapid elevator (1 ~ 2 m/s) and high speed elevator (2 m/s). Hydraulic elevators were introduced in the mid-19th century and are still being used in low-rise buildings. In 1852, the United States developed a safety elevator for wire rope lifting. In the 1980s, there was further improvement in drivers, such as the electric motors, which were driven by worm gears to turn the winding drum and balance weight. At the end of the 19th century, the friction wheel drive greatly increased the lift height.
At the end of the 20th century, the elevator was powered by the permanent magnet synchronous towing machine. It greatly reduces the space of the machine room, and it has the advantages of low energy consumption, energy efficiency and speed, which has greatly contributed to the development of real estate. Thyssenkrupp elevator company has developed a new type of "multiple lift" that can operate vertically. Take the size of a common car The size of the escalator is quite different: but the total area is required in the national standard. Give you a general calculation The width of the well is the width of the car. Well, the depth of the well = the car depth + 600 (for the reside) The width of the well is the width of the car. Well, the depth of the well = the car's depth + 1200 (for the rear-end). The u-shaped tourist ladder is usually around 1000kg The car is usually about 1300x1800 The steel structure shaft is width between 2200 and 2400, depending on the size of the door. The depth of the structure is about 1500, and the rear wall is empty.
