An elevator system with several cubicles

Summary

Masami Sakit — an independent consultant and inventor, specializing in transportation systems. 11 He owns U.S. patents and Japanese Patent 3 pertaining to the elevator systems with several cabins, rotary motors and controllers traffic control signals. He has a Ph.D. from the University of California at Berkeley in transport engineering. Before becoming an independent consultant, he led the company Sakit Sakita Corp., specialized in software development for traffic control signals. Work in the company SRI International, De Leuw, Cat- her and Co. and the regional transport department of the State of Colorado.

This article discusses the new elevator system with several booths in which the mine is up to three cabins. As mentioned in my previous articles, it is expected that this system will significantly reduce the large high-rise office buildings of the space needed for the elevator, waiting room and lift passazhirov1. The condominiums or apartment buildings with several elevator cabs will not provide a space saving in office buildings. But in addition to a space-saving, he will improve the quality of service. For example, in a system with three cabins in the elevator shaft upper cabin can be used only for passengers who need to get to the superstructure on the roof or down from it. Middle and lower cabin can be used for passenger service to other floors, but one or two lower cabin — for the transport of furniture, catering crews, cleaners, recyclables and garbage. There is reason to believe that this new lift is particularly beneficial for the city’s buildings, where the price of land is very high, the space under the elevators tend to minimize, and a relatively small space saving allows to repay the possible additional costs for the elevator.

The history of the development and introduction of

The idea to place two of the elevator car in the same shaft in the air from 1921 year2. For continuous operation of such a system is implemented only in 2003 — a lift Twin Elevator System company Thyssen Krupp Elevator AG3. The author since 1993 is engaged in research on this issue, regardless of the company’s development ThyssenKrupp4- June 5 In my previous article, «An elevator system with several cabins in a mine,» considering the possibility of mechanical design and method of operation, as well as an analysis of the action of the elevator with two cabins in one mine in the office zdanii1. It is shown that the proposed system of the elevator requires significantly fewer mines than conventional elevator system when it is installed in a large high-rise office building.

Masami Sakit — an independent consultant and inventor, specializing in transportation systems. 11 He owns U.S. patents and Japanese Patent 3 pertaining to the elevator systems with several cabins, rotary motors and controllers traffic control signals. He has a Ph.D. from the University of California at Berkeley in transport engineering. Before becoming an independent consultant, he led the company Sakit Sakita Corp., specialized in software development for traffic control signals. Work in the company SRI International, De Leuw, Cat- her and Co. and the regional transport department of the State of Colorado.

Since then, the author has improved the mechanical design of the elevator with several kabinami7. This article briefly discussed the newly proposed new elevator system with a few cabins, presents some options for its use of hypothetical residential buildings.

attached to the opposite wall or side walls (see. Fig. 4).

To ensure that the elevator car moving in one shaft, will not face in any circumstances, all the cabins in one shaft mechanically linked by a bidirectional one-way clutch to move and up and down. Such systems are one-way clutches allow all elevator cars move simultaneously in one direction only (see Fig. 3). Any located near the cabin can be mechanically protected against collision with one another via a cabin mounted on a device that captures ropes adjacent cabin. Any two may be located near the cockpit is mechanically connected to each other using the same device with any spacing between them (see. Fig. 5). Each elevator car is protected by a backup of an independent brake system control is a system implemented by three levels of computer systems, each of which is provided with software, one for control of passengers throughout the system, one to control each shaft and one for controlling each elevator car ( see. Fig. 6).

The software that controls the passengers in the cabin handles requests and inquiries to the appropriate floor plans and performs the appointment of cabins for passengers. The software that controls the mine, monitors the status of the elevator car and the door in each shaft. The software that controls the cabin, «leads» the cabin (ie determines the acceleration / deceleration of the cab and implements it by controlling the operation of the engine) in accordance with the rule, which takes into account the distance to the front of the cabin and extending its velocity and speed consideration of the cabin. Each of those computers includes a local communication system with other systems in real-time online.

Software functions normally performed by traditional systems, elevators, such as unlocking doors on a floor, and management of the car door, control of the motor drive and other mechanisms, such as catcher by the system controller and / or equivalent systems can be used for the new system elevator with several cabins. His man-machine interface can include a video system to control the menus, voice control and a two-way interactive display with touch screen, which is installed on every floor and in every cabin.

Elevator cabin with several most effectively increases the capacity in large office buildings height of 20 floors or more. I estimate that in buildings with 30 floors and a lift system with three cabins in the mine can carry at least 60% more passengers per unit area of ​​the mine than a traditional lift. In buildings with 20 floors or more elevator system with two cabs in a mine — at least 40% more passengers per unit area of ​​the shaft than conventional elevator. There shaft unit area includes the area of ​​the mine used for further counterweights and the corresponding space for the equipment in the upper and lower parts of the mine.

Elevator cabin with several most effective for reducing the waiting time of the elevator in buildings height of 20 floors or more. These buildings amount elevator shafts can be determined based on the type of service and the value of the waiting time that a user willing to endure, not by the capacity of the elevator system.

Review of the new elevator system with a few showers

The new system allows you to install an elevator in the shaft up to three cabins (see. Fig. 1). Each elevator car moves up and down under the action of ropes attached to one of its sides. The other end of a set of ropes attached to a counterweight which moves up and down along the guide fixed to the shaft wall facing to the same side of the elevator car on which the set of ropes is fixed. The size of the motor can be small or large depending on the system requirements. Thus, there should be no restrictions on the height of the elevator shaft and the speed of the car. Shown in Fig. 2 and 3 of the elevator with three cabins for the building of medium height, in which all of the engines installed in the engine room on the same floor. Provided on the elevator car 8 wheels 4 move along rails attached to the same wall of the shaft, which moves along the counterweight and 4 move along the guide rails.

Example of use of the system

Case 1

In the first case considered 40-storey building, where there are 275 residential condominiums, including 50 apartments on the upper preferred five floors (from 36 th to 40 th). The building has 2 basement floors for garages, it is equipped with five conventional elevators for passengers and one service elevator to perform various other functions.

In the first embodiment, all of the traditional five elevators are used to serve the passenger flow in the building, including passenger streams on the upper floors and five of them. This option is unfavorable for the residents of the upper five floors, as they have to endure numerous intermediate stops. In the second version of the traditional system 4 elevators service the passenger flow is directed to the floor to the 44th, and with these floors and 1 lift is used exclusively for passengers traveling on one of the five upper floors or with them. Private elevator to serve the top five floors can also serve as protection against intrusion by 5 upper floors. Such a system should basically works well, except that the waiting time exclusive elevator often more than other lifts, and this problem increases when exclusive lift should be longer than usual at the floor.

In the proposed new system, the elevator with a few showers in the mine will be mine 3 with three cabins each, instead of the four traditional mines passenger elevators and one service elevator traditional mines. In this system, all cabins are physically able to get to any floor. But for ease of use, the software can only afford to climb the top of the cab on any floor, second cabin — for all but the top and the third cabin — at any level, except the top two (under normal conditions). The upper cabin is usually left to serve passenger traffic between the five upper floors, lobby and underground floors. This is done to the residents of the upper floors can in most cases go without stopping or almost non-stop. Middle and lower cabin is usually reserved for the other service flows between the floors and the lobby. Lower the cab of one of the mines can be used exclusively for staff.

The method of operation of the elevator cab is programmed for each car and each mine, day of the week and a specific number. Typical operation may provide that early in the morning all the cabins were on the upper floors. The software will allow the majority of the upper cabins stand on the top floor, and the middle and lower cabins stand, respectively, at the 35th and 34th floors. Early in the evening, the software will allow the majority of cabins standing on the lower floors. Five upper floors can receive priority service, when the system tries to primarily handle the call with five upper floors or on them, minimizing possible delays due to intermediate stops preceding cabins on the same shaft (in most cases).

As in the traditional system, the proposed system of the elevator can be used as part of a defense system that protects the occupants from other people. The system may also include a communications booth, equipped with a graphical display and a video camera and installed in the main lobby, from which the visitor may cause the tenant, so that he gave permission to come to my floor. When permission is received, the display shows the number of the elevator shaft for the visitor, while the display appears above the door of the mine floor room, which is sent to the visitor. When the visitor is inside the cab, he is asked to enter a panel communication room floor where he was going. If the number matches the number permitted to visit the elevator doors closed and the elevator car is sent directly to the destination floor. Tenants may be issued a smart card for use in the communications booth in the main lobby, in the underground garage and in the car, or can be equipped with a communication stand and cover connection biometric identification system such as fingerprint or iris.

Case 2

In the second case considered 10-storey building with 60 apartments. This building provides underground parking 1 floor and 1 mine with one conventional elevator. Elevator satisfactorily serving passenger flow most of the time.

The problem occurs when the tenant moves out old and new drives and the elevator should stand on the same floor or in the main lobby for loading / unloading of furniture. In such circumstances, residents sometimes have to walk down to the lobby or the garage, walk or climb on your floor. The same thing happens when repairing or painting apartments, when the elevator is used to transport equipment and materials for repair or painting. Sometimes workers need to hold the elevator for a long time, but he can not do that. This problem occurs about 30 times a year, if the tenants of the building, on average occupy her flat for five years, 12 times at the exit, at the entrance to 12 times and 6 times for painting or other work in the building.

The proposed new elevator system includes two cabins in one shaft, wherein each of the booths can get to any floor of the building. For this system requires a space for storing equipment on the top and bottom of the shaft. Problems related to the length of time the cabin on the same floor, in the mine with two cabins can be eliminated, allowing entering or working load and unload the cabin on the ground floor, because the cabin, located a long time on one floor, giving way to a moving cab approaching to it, by moving to another floor so that other cars could pass it to the desired floor. After the arrival of another car at the desired floor, cab, long time standing on one floor, can go to the correct her floor not completely filled, or it may come back to the floor where she was before she had to give way to complete work on this floor.

Discussion and conclusions

Obviously, the examples of using the new lift with several cabs enable better quality of service compared to the conventional elevator. In the first example, the number of mines to a new system with a few showers more than the required minimum number of mines, and it is expected that the system will reduce the waiting time for all users, especially for the residents of the upper five floors. In the second example of a system with two cabs in the shaft will eliminate operational problem existing for traditional elevator.

Will the proposed new system with several cabins in the mine or the economy will lead to additional costs depends on the building in which it is implemented. In the first example, the elimination of two mines and the reduction of floor space for waiting passengers save about 16-25 m2 per floor, on the basis of the standard size of the mine, which will give 680-1 027m2 of the building. Additional parking space in the cabin of the new system will increase the space occupied by the elevator at 97-146 m2. Thus, space savings amount to 580-880 m2. The number of the doors of the elevator shaft is reduced by 72, the number of cabins will increase by 5, and require more complex management system. In the second example, the new system will save money. In fact, it would lead to additional costs.

The figures given in the above examples, it can be concluded that the benefits of multiple elevator cabs in residential buildings will be felt in the high-rise urban buildings with extremely high price of land.

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