The number of passenger elevators should be determined through design and calculation; 3..1. Where conditions require close proximity, sound insulation and vibration reduction measures must be taken; 2. Elevators or escalators should not be arranged next to the audience hall. Special facilities for the disabled should be set up; 5. The escalator should not be used for other purposes within 3m of the horizontal part of the upper and lower ends of the escalator; 6 When only one-way escalator is set up, matching stairs should be set up nearby. The main passenger elevators should be located Elevator Ceilings Manufacturers in the lobby where the audience is easy to see and more convenient;
Second, from a psychological point of view, people living in high-rises It is easy to have a feeling of ’base instability’ and often feel depressed. The stairwell ’Code for Fire Protection Design of High-Rise Civil Buildings’ stipulates that unit dwellings with eleven floors and below may not be provided with closed stairwells, but the doors to the stairwells shall be Class B fire doors; twelve floors and Eighteen-story unit dwellings shall be provided with closed stairwells; unit-type dwellings with nineteenth or more floors shall be provided with smoke-proof stairwells.
The General Classification of Civil Architecture Design sorts the residences according to the number of floors: the first to third floors are low-rise residences, the fourth to sixth floors are multi-storey residences, and the seventh to ninth floors. The completion of the skyscrapers that want to compare with the sky test is due to the continuous development of engineering science of human beings, but it is not easy to reach the top floors of these buildings. And the depreciation period is long. Disadvantage: It is not easy to escape when a fire occurs, and the toxic gases emitted by the fire are diffused from the bottom up, so it is the most dangerous floor. The sound waves received by high-rise buildings are stronger than the lower floors of the same building.
In addition, the first floor is the most vulnerable to theft. The 8-11 floors are the so-called ascending ash layers in the environment. Even if you are in the building, you can feel the change in air pressure as you rise in height, especially your ears. In this case, it is easier to escape from the room on the ground floor if the outside window is not equipped with a railing for anti-theft. At a certain building height (a simple point can be regarded as half the height of the building), where the indoor and outdoor pressures are equal, the air does not flow internally and externally. Increasing the cost of elevators also affects the rate of house acquisition.
Before installation or disassembly, the competent department shall formulate a detailed operation plan in accordance with the requirements of the manual in accordance with the actual conditions of the construction site, and provide technical briefing and designation of guardians to all staff home escalator manufacturers before the work of the team. According to the regulations of the Ministry of Construction, the installation and dismantling staff shall be staffed by professional teams and those who have obtained the qualification certificates issued by the relevant municipal departments, and shall have special personnel to direct them.1. The horizontal displacement control value of the column top of the elevator shaft structure should not be greater than H / 500 (H is the height from the top of the foundation to the top of the column).
When arranged in an adhering manner, a steel structure should be used. The fulcrum should be constructed as a fixed fulcrum. 6. The structure of the elevator shaft should adopt the external attachment arrangement, and it can also adopt the independent arrangement and the internal attachment arrangement. 3. For an independently arranged elevator shaft structure, the wind vibration coefficient should be considered when calculating the wind load. When the elevator shaft structure is arranged independently, reinforced concrete structure can be adopted. 2
Therefore, in the design, we usually treat it as the front room of the fire elevator room, and do not protect the rest.’ Can fire hydrants located in the front room protect adjacent areas? The provisions of the ’High Regulations’ did not specify this, but the ’Fire Elevator Front Chamber shall be equipped with an indoor fire hydrant’ in the ’Building Design Fire Protection Code’ clearly states that the fire hydrant in the front of the fire elevator is for the convenience of firefighters The use of fire hydrants and the opening of channels cannot be included in the total number of fire hydrants..
At present, in some places such as Shanghai, fire protection design regulations require hat fire hydrants be installed in the front rooms of smoke-resistant stairwells in high-rise buildings.The ’High Regulations’ stipulates that ’fire hydrants must be provided in the front room of high-rise building fire elevator rooms
In 1967, thyristors were used to drive elevators, and elevators controlled by AC voltage and speed drives appeared. In 1983, elevators with variable voltage and frequency control appeared, and quickly became mainstream products for elevators due to their good speed regulation performance, comfort, and energy saving.
In 1996, the machine-room-less elevator driven by AC permanent magnet synchronous gearless traction machine appeared, and the elevator technology was another innovation. Because the traction machine and the control cabinet are placed in the hoistway, the independent machine room is omitted, the construction cost is saved, the effective area of the building is increased, and the freedom of design of the building’s architectural aesthetics is improved. This elevator also has the characteristics of energy saving, no oil pollution, maintenance-free and high safety.
The development of elevator control methods has gone through processes such as handle switch operation, button control, signal control, and collective selection control. Parallel control and intelligent group control have appeared for multiple elevators.
Nowadays, elevator companies from all over the world are constantly researching and developing new elevator products and improving their maintenance and service systems, and strive to meet people’s increasing demand for modern construction and transportation.
In 1852, the home escalator suppliers engineer Elisha Graves Otis (1811 ~ 1861) invented the world’s first safety lift in Yonkers, New York, USA. It is a lift powered by a steam engine and equipped with safety devices. He fixed the jagged iron bar on the guide rail, set a spring leaf on the upper part of the car, and connected it with the mechanical linkage and the brake pawl. The traction rope is fixed in the center of the spring piece. When the traction rope breaks, the spring piece returns to its original shape, forcing the mechanical linkage to move, and then the brake claws extend into the jagged iron bar to prevent the elevator from falling. Industrial users (cargo lifts) are the first users of safety lifts.
In the city of more and more desires, in the jungle of higher and higher buildings, deep in our hearts, there should be a staircase like this-on the side of lively life, it has been waiting there silently , Waiting in a place full of lights, close at hand, but seems to be far from the horizon.
One day, when all your travels are suddenly interrupted, you will think of it when you look back. Just turn around and go to the right. It also uses its familiar warmth, as it did before, with its persistence and persistence, cascading in a monotonous and rich layer to place your upward steps.
Modernization of traditional building structures in countries such as UK, the U.S., Canada and France has contributed majorly to the growth of smart elevator market. Moreover, expanding building infrastructure across developing economies especially in Asia Pacific has escalated need for comfortable, secure, efficient and quick vertical transportation.
The numerous companies operating within the market strive to remain competitive by expansion and innovation of their product line offering. Companies are working towards enriching the customer experience through fabrication of smart elevator components which include doors, interior and entrance. Technologies enabling functioning of these elevators are of optimum level thus cost of entire elevator unit is high. All the above factors prove to be a barrier for the growth of smart elevator market. Technological breakthrough for the smart elevator market is emergence elevator control system which provides increased safety, comfort, enhanced infrastructure and operation control through voice commands, sensors and more.
Reserve a staircase like this for your heart. Preserving a primitive way for yourself, reaching past, present and future.