For building doors and windows that have undertaken important energy-saving and emission-reducing tasks, how to improve the energy-saving performance of doors and windows has become a problem that must be faced by the door and window industry. Door and window hardware is an important part in the door and window system. The following article discusses the role of aluminum alloy door and window hardware in the door and window system and the problems that should be paid attention to during the selection. It is hoped that the industry can communicate and make progress together.
1. What is the system of doors and windows?
The system is a group of things that are interconnected and interact with each other. It can also be said that the system is an overall composed of related parts. A comprehensive analysis of the composition of the unit and the final composition, single refers to a unit or only focus on the macroscopic whole, is not a systematic approach. The system is an organic whole composed of different elements. The elements of the system and the system are relative. In one system, the elements are elements, and at another level, they are systems. There is a whole between the parts. Relationship.
Door and window hardware system: Door and window hardware is only the accessories of doors and windows in the usual consciousness. Although there are also "hardware accessories are the heart of the door and window system", but the actual has not received real attention. The door and window hardware is composed of the handles (the term "handle" provided by the industry encyclopedia) components, transmission locking components, hinge components, auxiliary components, etc., through the system of matching and integration technology, serving Subsystem of the door and window system. There is also a need for systematic technical support and after-sales service. We can't simply say a certain hardware product, and we can't abandon the separate hardware components and talk about the concept of "door and window hardware system". A systematic concept should be established to make corresponding plans for various hardware products. In the framework of the large "door and window system", the changes of profiles, glass, rubber strips, processing technology, and even the opening and closing of doors and windows require the door and window hardware to make corresponding changes to better serve the doors and windows.
2, aluminum alloy door and window hardware in the door and window system
When considering the problem of hardware matching in the door and window system, it is first necessary to have an overall research and understanding of the door and window system. Especially the design and selection of the profile size, it can be said that there is no good profile to be the cornerstone, and what kind of hardware can not be used to make good doors and windows. For the profile and hardware to be comprehensive considerations, be careful not to select the profile, then select the hardware. This situation sometimes leads to the lack of matching hardware due to the non-standard profile. Now most real estate developers will consider the combination of profiles and hardware, and then give them a choice. The choice of accessories should consider its versatility and rationality, while considering the processability and material quality of the parts production. Of course, there are also matching options. This situation will definitely bring difficulties to hardware matching.
Load (entry "load" provided by the industry encyclopedia) matching requirements for doors and windows hardware accessories: when selecting hardware, first of all to ensure the three-sex function of doors and windows (wind pressure, water tightness, air tightness) and insulation, insulation Performance requirements such as heat and sound insulation. In 2012, the Ministry of Housing and Urban-Rural Development re-enacted GB50009-2012 "Building Structure Load Specification". Increased and adjusted various parameters such as temperature action, variable load, accidental load, permanent load, wind load height variation coefficient and mountain topographic correction coefficient (the term "correction factor" provided by the industry encyclopedia), etc. The content and method of vibration calculation have been greatly improved and improved. The basic snow pressure and basic wind pressure values ​​of some cities were adjusted, and a new national basic snow pressure and basic wind pressure map were drawn. Provide a more detailed theoretical basis for our calculations.
In different regions and different environments, the safety and wind pressure requirements for doors and windows are not the same. It is necessary to comprehensively calculate various parameters to determine the location and quantity of red dots to ensure the required performance requirements. In general, the more lock points, the stronger the wind pressure resistance of doors and windows. At the same time, we must also consider the configuration of the lock point. Only when the number and layout of the lock points in the door and window are properly selected will the multi-point lock play the most effective role. Under the premise of ensuring the performance of doors and windows, optimizing the lock layout and reducing the hardware use cost is the optimal combination. The calculation of the number of lock points is complicated. Here, a simplified calculation formula for the number of lock points is recommended:
Let n a lock point number; W a fan width; H a fan height; Wk a standard wind pressure; a safety factor of 2.5 times, then n = W × H × 2.5Wk / 0.8 (pieces)
Calculation example: For a building in a certain place, the calculated Wk is 2.2KN/m2, and the number of locks that require a height of 1.2 and a width of 0.6 meters is required:
N = 1.2 × 0.6 × 2.5 × 2.2 / 0.8 ≈ 5 (pieces)
After determining the number of lock points, it is necessary to select the adapted hardware category according to the shape of the door and window profile section (the term "section" is provided by the industry encyclopedia). Different hardware types, the shape and use of the lock points are not the same, generally the hinges or sliding supports of the casement window are regarded as lock points.
Door and window hardware and profiles: Any product, including hardware, has its scope of application. There is no versatile hardware that can match all door and window profiles. In this respect; carefully selected according to the requirements of the customer and the basic functions of the window. As far as aluminum (the term "aluminum" is provided by the industry encyclopedia) alloy door and window profiles, the profile of the profile of the domestic aluminum alloy interior doors and windows is relatively standardized, more than 80% of which are European standard groove profiles, which are simpler to select. The cross-section of the profiled windows and doors is quite complicated. The frame fans have grooves, the frame fans have no grooves, the frame has no grooves, and the fan-shaped profiles are different. The groove size of the grooved profiles also changes. The profiles of aluminum alloy sliding doors and windows are more diverse, and the dimensions of profiles such as hook, light, edge, bottom, and slide are different for each profile manufacturer. According to the characteristics of the profile, the selection should be based on the principle that the structure of the profile is not damaged as much as possible, and the installation and adjustment are convenient, and the performance requirements of the door and window are guaranteed. Therefore, the choice of hardware needs to be analyzed according to the specific section of the profile and reasonable choice.
Through the above analysis, we can have a preliminary understanding of the selection of door and window hardware. The diversification of aluminum profiles in the Chinese market has led to unique limitations in the current configuration of hardware. The following hardware principles for aluminum alloy doors and windows can be combined:
(1)) First of all, we must consider the wind pressure resistance and airtightness required for doors and windows (the term "airtight" is provided by the industry encyclopedia) performance and stability:
(2) Select the hardware manufacturer with reasonable quality and reasonable hardware accessories by the size of the door, window sash, profile shape and opening method;
(3) When there is wind pressure resistance requirement, determine the number of lock points and layout scheme according to the local wind pressure standard value and the height of the floor to ensure the required wind and pressure resistance, airtight performance and stability of doors and windows. Claim.
(4) Guaranteed safety: At the same time, considering the factors determined by the width of the door, sash, and weight, the load-bearing grades, specifications, and dimensions of load-bearing components such as hinges (hinge), sliding stays, and pulleys are selected.
Concerned about surprises
Label: The role and attention of aluminum alloy door and window hardware in door and window system
Previous: The difference between metal plating and plastic plating Next: Daily maintenance of submersible mixer
Nut Ground Screw with 3 pieces or 6 pieces customed nut to adjust the height of ground screw for solar panel ,with reinforced plate to install the ground screw ,it is easy to install ,and no harm to environments ,save time and cost .
with one or two or three big blades ,or continuous small blade .
Solar Energy System Nut Ground Screw
Pv Mounting Ground Screw,Nut Ground Screw Pile,Ground Screw Nut,Solar Energy Mounting Ground Pile
BAODING JIMAOTONG IMPORT AND EXPORT CO., LTD , https://www.chinagroundscrew.com