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Has assumed an important energy-saving emission reduction task of building doors and windows, how to improve the energy efficiency of the door and window, has become today's doors and windows industry must face the problem of research. Metal doors and windows, in the windows system is an important part of and below the aluminum alloy door and window hardware in Windows system function and selection should pay attention to the problem to be discussed, hope in the industry mutual exchanges and common progress.

1, doors and windows system what is the system?

The system is composed of a number of things that are interrelated and interact with each other. It can also be said that the system is composed of the correlation part of the overall. Comprehensive analysis of the composition of the unit and the final component, single point of a unit or focus on the overall macro, are not the system's point of view. System is composed of different elements of the organic whole, the elements of the system and the system is relative, in a system is element of something, on a different level can be system, between them there is the relationship between the whole and the part. Doors and windows hardware systems: doors and windows hardware in the usual sense, only the doors and windows accessories. Although there are "hardware parts are doors and windows of the heart" of the system, but the actual did not get real attention. Metal doors and windows is by handle parts, transmission locking components, hinge parts, accessories and so on organic combination together, by supporting the system collocation and integration technology, service on the doors and windows system subsystems. Also need to have systematic technical support and after-sales service. We can not simply say that a certain hardware products, but also can not abandon the separate pieces of hardware and talk about the concept of "windows and doors hardware system". Should establish the idea of the system, make the corresponding plan to each kind of hardware product. In the large "windows and doors system" within the framework of profiles, glass, plastic, processing technology, and even the way the change of doors and windows, doors and windows are required to do the appropriate changes in the hardware to better serve the doors and windows.

2, aluminum alloy doors and windows hardware in the door and window system matching

In the consideration of hardware and windows system matching problem, first of all need to have a whole research and understanding of the door and window system. Especially the size of the design and selection of profiles, it can be said that there is no good profile to do the cornerstone, with what kind of hardware also ultimately do not make good doors and windows. The profile and hardware to consider the choice of comprehensive, attention to the selection of profiles, and then choose the hardware. This is sometimes due to profile is not standard and can not find the hardware used. Now most of the real estate developers will consider the profiles and hardware matching, and then to choose. The choice of accessories to consider its versatility and rationality, at the same time to consider the production of parts of the process and the quality of materials. Of course, there are also matching, this situation will certainly bring difficulties to hardware matching.

Load and so on all kinds of parameters to do the increase and adjustment, to the wind vibration calculation of the content and methods to do a lot of improvement and perfection. Adjust the basic snow pressure part of the city and the basic wind pressure value, draw the new national basic snow pressure and basic wind pressure diagram. Give us a more detailed theoretical basis for the calculation.

In different regions, different environments, the safety of the windows and doors of the wind pressure is not the same, according to various parameters of the comprehensive calculation, to determine the location and quantity of red points in order to ensure that the required performance requirements. Generally speaking, the more the lock points, the stronger the wind resistance performance of windows and doors. At the same time, also want to consider the configuration of the lock, only reasonable choice of door and window lock the quantity and layout, will make multi-point lock play the most effective role of desert. Under the premise of ensuring the performance of windows and doors, optimize the lock point layout, reduce the use of hardware costs, is the best combination. The calculation of the number of lock points is more complex, in which a number of lock points are recommended to simplify the calculation formula:

Set n a lock points; W a wide; H a high; Wk a standard wind pressure; a safety factor of 2.5 times, then 2.5Wk/0.8 * H * n=W

Calculation example: a building in a building, the calculation of 2.2KN/m2 for the Wk, the high 1.2 high, 0.6 meters wide window need to lock the number of points:

N=1.2 x 0.6 x 2.5 x 2.2/0.8 = 5

After determining the number of lock points, the need to select the appropriate hardware category according to the section shape of doors and windows. Different types of hardware, lock point shape and use are not the same, the casement window hinge or sliding support are considered to be locked.

Door and window hardware and profiles: any products including hardware accessories has its scope of application, there is no universal hardware accessories can be unified all the doors and windows profiles. In this regard; according to the requirements of customers and the basic function of the window carefully selected. For aluminum alloy doors and windows, the current domestic aluminum alloy doors and windows of the sectional specification, more than 80% of the European standard trough, the matching is relatively simple. Flat open door and window profile is more complex, different fan frame has a slot, a fan frame had no groove, a frame slot and the fan is provided with a groove profiles, profile slot the slot size will also change. Aluminum alloy sliding doors and windows profiles are more diverse, the hook opening, KPS, edge sealing, below, drop profile size of each profile manufacturers are not the same. Optional according to the characteristics of the profile, in the spirit of the structure and the structure of the material as far as possible not to damage, easy installation and adjustment, to ensure that the principle of door and window performance requirements. Therefore, the choice of hardware needs to be based on the specific analysis of the cross-section of different profiles, a reasonable choice.

Through the above analysis, we can have a preliminary understanding of the matching of doors and windows hardware. The diversification of aluminum profiles in the Chinese market has led to the current configuration of the hardware has a unique