With the recovery of the marine elevator international […]
With the recovery of the marine elevator international economy, high-rise buildings in the real estate industry have also risen, with dozens of floors at every turn. The elevator industry has also risen rapidly with real estate. Now my country has become the world's largest elevator producer and the world's largest new elevator installation market. , The competition is fierce. With the development and progress of society, elevators are not only an important equipment in the production process, but also a transportation equipment that people frequently ride and enjoy. my country's entry into the World Trade Organization has made China's economy take another big step towards global integration. The Chinese market will be more open and trade will be more free. This means that more foreign products will compete in the domestic market, and product prices will be very competitive due to lower tariffs. Facing the increasingly severe market environment, every company first considers how to survive. To survive, it is necessary to improve the competitiveness of enterprises. Among the factors that can change the rules of competition, technological changes are the most significant. How to maintain a leading position in elevator technology so as to maintain the company's competitive advantage? First of all, business managers must clearly understand the development of elevator technology and formulate a corporate passenger elevator technology development strategy, so that the company can not only survive but also develop.
What is the development trend of elevator technology in the future? Environmental protection. The world today has a very clear understanding of the relationship between survival and development: you cannot survive without environmental protection, and there is no development without survival. The green concept has been deeply rooted in the hearts of the people around the world, and the green concept is the general trend of elevator development. Some experts predict that "whoever launches green products first and seizes the market will control the initiative in market competition." The main development trends are as follows: continuous improvement of product design, production of environmentally friendly elevators with low energy consumption, low noise, no oil leakage, no water leakage, no electromagnetic interference, and no oil pollution from the hoistway guide rail. Passenger elevator traction adopts nylon synthetic fiber traction rope, steel belt and other non-lubricating traction methods. Elevator decoration will use environmental pollution-free materials. Elevator no-load rising and full-load down motor regenerative power generation recovery technology. There is no need to install scaffolding when installing elevators. Elevator parts have no impact on the environment during production and use and the materials can be recycled. Bluetooth technology is used in elevators. Anyone who has installed an elevator knows that laying out and aligning is time-consuming, laborious, and error-prone work. If the control screen and the calling system are connected through Bluetooth technology to realize wireless calling, it will be another revolution in elevator control and will bring us huge benefits. The installation period will be reduced by more than 30%. The direct benefit is to reduce the installation cost.
Customers also reduce the cycle cost from ordering the elevator to using the elevator and increase the cash turnover rate. The use of Bluetooth technology in elevators will definitely make the elevator control system use the latest and fastest microcomputers, which will further improve the reliability of the elevator, greatly reduce the failure rate, and further improve the control accuracy. The result is that the elevator is more comfortable. Leveling is more accurate. At the same time, it will be possible to check the status of elevators through the network in the future, especially the advance maintenance of elevators can be better and more comprehensive, and it will further speed up the Internet access of corporate elevators. It is easier to transform old ladders, and the time and cost will be reduced. According to the statistical table, 50,000 old elevators will enter the renewal and transformation market every year, and the use of this technology will generate huge social and corporate benefits. I believe that no company will give up this opportunity. It solves the compatibility and connection between passenger elevator control and peripheral equipment. In particular, elevators and escalators can be integrated into the building management system or the intelligent management community system. The drive system uses a permanent magnet synchronous gearless traction machine. Compared with the traditional worm gear and worm drive traction machine, the permanent magnet synchronous gearless traction machine has the following advantages: the permanent magnet synchronous gearless traction machine is directly driven, without worm gear and worm transmission pair, and the permanent magnet synchronous motor does not.
As an asynchronous motor requires a very space-consuming stator coil, the main material for making a permanent magnet synchronous motor is neodymium iron boron with high energy density, high remanence induction and high coercivity, and its air gap magnetic density is generally above 0.75T. So it can be small in size and light in weight. High transmission efficiency. Due to the direct drive of permanent magnet synchronous motors, the transmission efficiency can be increased by 20% to 30%. The permanent magnet synchronous gearless traction machine does not have the noise generated by the bearing when an asynchronous motor is running at high speed and the noise generated by the worm gear pair contact transmission, so the noise of the whole machine can be reduced by 5-10db(A). Low energy consumption. From the working principle of the permanent magnet synchronous motor, it can be known that the excitation is realized by the permanent magnet, and the stator does not need to provide additional excitation current, so the power factor of the motor can reach very high. At the same time, there is no current through the rotor of the permanent magnet synchronous motor, and there is no rotor loss problem. Generally, the loss is reduced by 45%～60% compared with asynchronous motors. Since there is no low-efficiency and high-energy consumption worm gear pair, energy consumption is further reduced. Permanent magnet synchronous gearless traction machine does not have the problem of tooth profile wear and does not need to replace the lubricating oil regularly, so it has a long service life and basically does not require maintenance. In the near future, if the cost of producing permanent magnet synchronous motors can be solved as soon as possible, permanent magnet synchronous gearless traction machines will replace the traction machine composed of worm gear and worm drive asynchronous motors. Of course, superconducting force drag technology and magnetic levitation drive technology will also be applied to Guangdong elevators in the future.