Industrial doors are commonly used facilities for steel structure buildings. They are suitable for buildings that require high opening speed, heat preservation, sound insulation, sealing and wind resistance such as large warehouses, factories, logistic houses, pharmaceutical plants, food factories, and mining workshops. Especially for the place where the door opening is large and it is inconvenient to install the door body on the ground, the industrial doors can open conveniently and quickly. Industrial doors are divided into: industrial sliding doors, industrial rolling doors, industrial sliding doors, manual/electric sliding doors, fast-rolling doors, and etc. The wind resistance of industrial rolling doors can reach level 10. Industrial sliding doors are divided into vertical lifting, standard lifting and high-position lifting, while electric sliding doors are divided into two types: switch from the middle to the sides or switch from one side to another. Which opening method of industrial door is adopted will depend on the analysis of the specific conditions and development requirements of the workplace, and each industrial door’s design has its own unique characteristics and advantages. Larger doors include hangar stacking doors and folding doors. This article mainly introduces the characteristics of the three most common industrial doors: lifting industrial doors, industrial rolling doors, and industrial sliding doors.
Lifting Industrial Door
The lifting industrial sliding door is composed of a series of door panels, which rise along the track, and the torsion spring system or counterweight system is used to ensure the balance of the door body. The installation track is as close as possible to the inside of the building, which can save a lot of internal space of the steel building. Different installation methods are designed according to the size and shape of the steel construction. The selection of the door lifting method can be based on the following basic conditions: the size of the door opening; the upper space of the door opening; the side space of the door opening; the depth of the door opening. According to the actual situation of the building site, combined with the requirements for the use of space, the following lifting methods can be realized to meet the requirements of rational use of space to the greatest extent.
Standard lifting: Suitable for door top space: within 200-300mm.
High lifting: suitable for door top space:> 300mm and <door opening height
Vertical lifting: suitable for door top space:> or = door opening height
Inclined roof lifting: It is suitable for the slope shape of the ceiling of the door top, and the track is parallel to the ceiling.
A.Door panel’s material
The door panel is made of thick double-layer galvanized color steel plate, and the interior is made of high-density polyurethane foam material. It possesses the advantages of heat insulation, sound insulation, and heat preservation. It is practical for large warehouses and factory gates. The maximum production width of industrial lift doors can be up to 10 meters.
According to the structural design of the building, the lifting door opens vertically upwards and hangs flat on the inside of the wall above the door opening, which does not occupy any indoor space.
Double-layer galvanized steel sheet plus polyurethane layer, surface embossed design can make the door panel durable, easy to clean, beautiful and elegant.
When the door body reaches a certain width, an external stiffener is designed to ensure its strength. Tested by European standards, it can resist the instantaneous wind force of 10 level.
The top, bottom, and both sides of the door panel are equipped with high-quality rubber sealing strips, and there is a reliable seal between the door panels to ensure that the door body is not corroded. Sealing strips are installed on all sides, and the airtightness is excellent.
Anti-falling device and airbag (optional) will be added to prevent the door from falling down or the bottom of the door collides with obstacles, the door will automatically stop or run in reverse to avoid accidents. Wire rope breaking device and torsion spring breaking safety device could prevent the door body from harming people and things in any way.
Industrial Rolling Door
Industrial rolling doors are connected in series with multi-joint movable doors. In a fixed slide, it rotates up and down with the reel above the door as the center. It is suitable for public places such as commercial facades, shopping malls, factories and mining enterprises. The industrial rolling door plays a role of convenient and quick opening for place where it is inconvenient to install the door body on the ground.
A.The aluminum alloy surface of the industrial rolling door can reduce scratches, resist rain corrosion, sand and dust friction. At the same time, it has a certain degree of wind resistance to ensure the safety of the door body during use.
B.The service life of industrial rolling doors is longer. Because of the automatic balance structure design, the industrial rolling door keeps the shaft and the guide rail at a distance of one layer of curtain width, which reduces the loss and noise caused by the collision and friction between the industrial rolling door and the guide rail, also decrease more unnecessary lifting force caused bu angle, which effectively protects the normal operation of the motor, reduces losses, and extends the life of the motor.
C.The wireless transmitter can be used for remote operation, and it can be easily operated within 15 meters of obstacle-free range.
Industrial Sliding Door
The industrial sliding door is a popular factory door because of its stylish appearance, good airtightness, and strong wind resistance ability. Most of the doors on the market adopt the upper load-bearing and lower guidance method. The door panel material is colored steel foam panel (inner Polyurethane foam) and EPS board (commonly known as foam sandwich board), they are supported and fixed by fasteners. The track is placed in the fastener, and the hanging wheels and door panels are fixed on the track. If double-opening is used, it should be on the track. A limit device is installed inside to fix the door stroke, and the motor should also adjust the stroke and rebound or stop force when it encounters resistance.
A.Industrial sliding doors are electric two-way or one-way side-opening. The door frame is made of section steel or stainless steel or hard aluminum. The door body is made of heat-preserving color steel sandwich panels. The door body can be designed with multiple styles of daylight windows and convenient door-to-door doors. It can make people or things pass quickly, which greatly simplifies the series of actions of stopping, opening, passing, and then closing the door that need to be done through the traditional single-opening door, thereby greatly improving work efficiency. It can be freely opened in two directions by pushing or hitting by a trolley or even a forklift, and automatically closes when a person or object passes by.
B.The structure is simple, safe and reliable, and convenient for maintenance. It can be turned on by electric and remote control, and can be turned on manually when the power is off.
C.The junction of the door’s mainframe, small door’s frame and door panel adopts high-strength aluminum alloy or metal material, which can reduce the weight of the door body and make it beautiful and generous.
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