What are the applications of door hinges in the construction industry
Information summary：As the core hardware component that connects the door body and door frame, and realizes the opening and closing function of the door body, door hinges are widely used in the construction industry. Their selection and performance directly affect the safety, durability, and convenience of door use. According to the different functional zones, door types, and usage requirements of buildings, the main
As the core hardware component that connects the door body and door frame, and realizes the opening and closing function of the door body, door hinges are widely used in the construction industry. Their selection and performance directly affect the safety, durability, and convenience of door use. According to the different functional zones, door types, and usage requirements of buildings, the main application scenarioses can be divided into the following categories:
1、 Civil architecture: focusing on "residential convenience and adaptability"
Civil architecture is the most fundamental application field of door hinges, covering residential buildings, apartments, villas, etc. The core requirement is to "adapt to different materials of door bodies and meet daily high-frequency opening and closing". Specific scenarioses include:
1. Residential interior doors (bedroom/living room/bathroom/kitchen)
Suitable door body: wooden doors (solid wood, composite solid wood), plastic steel doors, aluminum alloy doors (commonly used in kitchens and bathrooms);
Hinge types: mainly ordinary hinge hinges (such as 3mm thick cold-rolled steel hinges) and hydraulic buffer hinges (to avoid door impact);
Core requirements: The load-bearing capacity should match the weight of the door (4-inch hinges should be selected for single doors ≤ 80kg, and 5-inch hinges should be selected for doors ≥ 100kg), and it should be quiet (to avoid friction and noise from hinges affecting the living experience). The bathroom door hinges should also have additional "rust resistance" (to cope with humid environments).
Example: Three 4-inch hydraulic buffer hinges are commonly used for solid wood doors in bedrooms to ensure smooth and noise free opening and closing of the door; Stainless steel hinges are selected for the aluminum alloy doors in the bathroom to prevent rusting and jamming caused by water vapor.
2. Residential entrance door/villa entrance door
Suitable door body: steel anti-theft door, copper door, cast aluminum door (heavy, single door often ≥ 150kg);
Types of hinges: heavy-duty concealed hinges (hidden design to enhance the aesthetic appeal of the door), floor to ceiling hinges (fixed at two points, with stronger load-bearing capacity, capable of bearing 200-500kg);
Core requirements: High load-bearing capacity, anti pry (no exposed locking points on concealed hinges to enhance anti-theft performance), weather resistance (outdoor installation requires resistance to ultraviolet radiation and rainwater corrosion).
Example: Villa aluminum gates commonly use a combination of 2 sets of floor to ceiling hinges and 1 set of heavy-duty concealed hinges, which not only meet the weight bearing capacity of the door body, but also avoid the hinge becoming a weak point in anti-theft through a hidden structure.
3. Balcony door/french window door
Suitable door body: sliding door (aluminum alloy/broken bridge aluminum material), folding door;
Hinge types: sliding door dedicated hinges (with track guidance function to ensure smooth sliding), folding door hinges (multiple doors open and close in linkage, requiring "synchronous rotation" characteristics);
Core requirements: Smoothness (to avoid push-pull lag), sealing (the gap between the hinge and the door frame/body should be small to prevent air and rain leakage), and "wind pressure resistance" (to prevent strong winds from causing the door body to shake) should also be considered for high-rise balcony door hinges.
2、 Commercial buildings: focus on "high-frequency durability and functional adaptation"
The frequency of door use in commercial buildings (such as office buildings, shopping malls, hotels, etc.) is much higher than that in civil buildings, and the door types are more complex, requiring higher durability and functionality of hinges. The main scenarioses include:
1. Office Building/Office Building (Office Doors/Public Area Doors)
Suitable door body: glass door (tempered glass, commonly single/double leaf), wooden office door, fireproof door;
Types of hinges: glass door specific hinges (with rubber gaskets to prevent uneven stress and breakage of glass doors), fireproof hinges (in accordance with GB 12955-2008 fire protection standards, with a fire resistance limit of ≥ 1.5 hours, mostly made of galvanized cold-rolled steel);
Core requirements: The hinges of glass doors must be "scratch free and compatible" (with gaskets to protect the glass), and the hinges of fire doors must be "not fail at high temperatures" (to ensure that the door remains closed during a fire and block the spread of fire).
Example: Stainless steel glass hinges are commonly used for tempered glass doors in public areas of office buildings. Each door is equipped with 2-3 hinges to ensure load-bearing capacity (the glass door weighs about 50-80kg per leaf) and avoid scratches caused by direct friction between metal and glass; Fire doors in fire exits must use fire-resistant hinges and pass fire safety inspections.
2. Shopping malls/shopping centers (store doors/automatic doors)
Suitable door body: automatic sensing door (mainly made of glass material), rolling shutter door (auxiliary door), and sliding door for shops;
Types of hinges: automatic door hinges (linked with induction systems, with "slow closing" and "rebound in case of resistance" functions), lightweight rolling shutter door hinges (adapted to the curling opening and closing of rolling shutter doors, requiring "flexible rotation" characteristics);
Core requirements: High frequency durability (mall doors open and close hundreds of times a day, hinge life needs to be ≥ 50000 times), compatibility with automation systems (automatic door hinges need to respond to sensing signals and control opening and closing speed).
Example: The automatic glass door at the main entrance of the shopping mall is linked to a motor and an induction probe. When someone approaches, the hinge drives the door to slowly open, and when there is no one, it automatically closes. The closing speed can be adjusted to avoid injuring pedestrians.
3. Hotels/dining establishments (room doors/kitchen doors)
Suitable door body: hotel guest room door (wooden+soundproof layer), kitchen fireproof and smoke proof door (steel);
Hinge types: silent hydraulic hinges (guest room doors need to be silent to avoid affecting guests' rest), smoke proof hinges (kitchen door hinges need to have good sealing performance to prevent the spread of oil fumes);
Core requirements: The hinges in guest rooms should be "buffered and silent" (with a closing speed of ≤ 0.5m/s and no impact sound), and the hinges in the kitchen should be "oil proof" (with a smooth and easy to clean surface to avoid oil accumulation and jamming).
3、 Industrial architecture: emphasizing "high strength and adaptation to extreme environments"
The door bodies of industrial buildings (such as factories, warehouses, workshops, etc.) are mostly heavy-duty doors and special doors, and the usage environment is complex (high temperature, dust, corrosive gases), requiring high "bearing strength, weather resistance, and corrosion resistance" of hinges. The main scenarioses include:
1. Industrial plant (workshop gate/equipment maintenance door)
Suitable door body: heavy-duty steel door (single door weight ≥ 500kg), sliding door, lifting door;
Hinge types: super heavy hinges (made of Q235 cold-rolled steel or cast steel, with a load-bearing capacity of ≥ 1000kg), sliding door guide hinges (with track positioning function to ensure smooth sliding of heavy doors);
Core requirements: High load-bearing capacity (to cope with the long-term opening and closing stress of heavy-duty doors), impact resistance (industrial environments may have equipment collisions, hinges need to have certain deformation resistance), dust prevention (hinge shaft cores need to have sealing sleeves to prevent dust from entering and causing jamming).
Example: The steel door of a heavy machinery workshop is commonly equipped with 4-6 cast steel super heavy hinges. The hinge blades are thickened (thickness ≥ 10mm) and the shaft core is thickened (diameter ≥ 20mm) to ensure stable opening and closing of the door body (weighing about 800kg). The hinge shaft core is coated with high-temperature grease to adapt to the ambient temperature of 30-60 ℃ in the workshop.
2. Warehouse/Logistics Center (Warehouse Gate/Loading and Unloading Area Gate)
Suitable door body: rolling shutter door, quick stacking door (high-frequency switch, used for logistics channels);
Hinge types: specialized hinges for rolling shutter doors (suitable for vertical lifting of rolling shutter doors, requiring "wear-resistant" characteristics), quick door hinges (fast opening and closing speed, requiring "high-frequency fatigue resistance" performance, with a lifespan of ≥ 100000 times);
Core requirements: High frequency durability (logistics center doors open and close at least 200 times a day, hinges need to be fatigue resistant), dust resistance (warehouse may have cargo dust, hinges need to be sealed to prevent dust).
3. Special industrial sites (chemical workshops/high-temperature workshops)
Suitable door body: anti-corrosion door (fiberglass material), high temperature resistant door (steel+fireproof layer);
Hinge types: corrosion-resistant hinges (made of 316 stainless steel or Hastelloy alloy, suitable for acid and alkali gas corrosion in chemical workshops), high-temperature resistant hinges (made of heat-resistant steel, capable of withstanding high temperatures of 300-500 ℃, such as doors in coking plant workshops);
Core requirements: adaptation to extreme environments (corrosion-resistant hinges must pass a salt spray test for ≥ 1000 hours, and high-temperature hinges must maintain their load-bearing capacity at high temperatures).
4、 Public Buildings: Highlighting "Safety and Universality"
Public buildings (hospitals, schools, sports centers, transportation hubs, etc.) have high pedestrian flow and complex personnel composition. The core requirements for door hinges are "safety protection, universal adaptation, and easy maintenance". The main scenarioses include:
1. Hospital (ward door/operating room door/fire escape door)
Suitable door body: ward door (wooden+antibacterial coating), operating room radiation proof door (lead plate door, heavy), fire door;
Types of hinges: antibacterial hinges (surface coated with antibacterial coating to prevent bacterial growth, such as silver ion coating), heavy-duty hinges for radiation resistant doors (carrying the weight of lead plate doors, made of radiation resistant alloy), and accessible hinges (ward door hinges need to be compatible with wheelchair access, with door opening and closing angles ≥ 180 °);
Core requirements: Antibacterial (to avoid cross infection), radiation resistant (the hinge of the operating room should be compatible with the lead plate door, without radiation leakage), barrier free (to facilitate the passage of patients and medical staff).
2. School/Gymnasium (Classroom Doors/Venue Doors)
Suitable door body: classroom wooden door, gymnasium heavy-duty glass/steel door;
Hinge types: universal silent hinges (classroom doors need to be silent to avoid affecting teaching), large angle hinges (gymnasium doors need to open and close at an angle of ≥ 120 ° to facilitate personnel evacuation);
Core requirements: Safety (hinges have no sharp edges to prevent students from being injured in collisions), easy maintenance (hinges in school settings should have a simple structure to facilitate daily maintenance and replacement).
3. Transportation hub (entrance to airport/station/subway station)
Suitable door body: glass channel door, fireproof isolation door, accessible door;
Types of hinges: Wear resistant hinges (with high pedestrian flow, daily opening and closing ≥ 500 times, hinges need to have a wear-resistant life ≥ 80000 times), barrier free automatic hinges (suitable for wheelchair access, with automatic opening and closing function);
Core requirements: High frequency durability, safety protection (to avoid injuring pedestrians), easy cleaning (smooth surface, convenient for daily disinfection and cleaning).
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Company Address：Zhangjiaqiao, Xinzhuang Town, Changshu City
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