led display installation works from the equipment point of view is part of the mechanical and electrical installation works, that is, LED lighting equipment installation, and other related projects are to create a display for the installation of the foundation, and the surrounding environment to coordinate, and other related projects were There are: 1), civil foundation engineering (including lightning grounding) 2), steel frame engineering 3), external decoration works 4), strong and weak wiring and ancillary equipment installation.
First, the civil foundation
led display basic engineering is the basic installation of the display installation, mainly used in the outdoor display screen as the screen body bearing the base, its function is mainly two aspects (1) will be flat body load on the foundation, To prevent the screen body settlement. (2) balance the body by the wind load, to prevent the screen body overturned.
The foundation of civil engineering is mainly composed of foundation part, bearing platform, reinforced concrete foundation, embedded parts and backfill. Reinforced concrete from the steel keel, concrete composition, concrete from the cement, sand, gravel, water in accordance with a certain proportion of uniform mixing, also known as concrete (Tǒng). Reinforcement is similar to bones, and concrete is like flesh and blood, so combined to achieve high strength. As the display used by the civil engineering, the general duration of 7 days to 45 days or so. The prefabricated part is a prefabricated steel structure which is embedded in the concrete when it is filled with concrete. This can provide a solid foundation for the installation of the external components. The commonly used embedded parts are prefabricated screws, prefabricated steel plates and so on.
* Lightning protection grounding
Outdoor basic engineering in the basic need for additional lightning protection grounding, the basic approach is in the foundation of the project, with a certain size of the flat steel welded into a grid-like grounding network, the grounding network buried in the foundation, and the ground soil to do a certain Processing, so that the resistance to reduce the lightning protection grounding requirements, and then the concrete in the reinforced with the multi-point welding, and the use of flat steel leads to the ground, so as to connect with the future structure, so that the entire component with lightning protection grounding. Grounding resistance measurement generally use grounding resistance measuring instrument, the resistance requirements generally less than 10W (ohms).
Second, the basic introduction of steel frame
led display steel structure frame project is the basic installation of the display, the display components through the steel frame frame will be firmly connected into a whole body, and the screen body and the main building together, carrying the weight of the screen body and suffered Of the other external forces, but also other equipment, external decoration of the installation basis. The main structure of the steel frame is steel column support (mainly for the column structure), the base (mainly for floor installation), the main screen frame, connecting fasteners.
Steel column support is mainly used for column installation, bottom and civil foundation through the embedded parts of the connection, play a role in supporting the upper screen body, the production method is the use of the provisions of the thickness of the steel plate bending welded together. The main frame of the screen body is mainly made by welding, but also can be used to connect prefabricated bolts. Mainly three parts: a. Screen body fixed structure b. Decorative package edge structure c. Rear maintenance structure (for large screen body).
Introduction of chemical planting bars
Chemical anchorage in the existing concrete structure or components on the basis of the need to use steel bars, screws, with the appropriate drilling and depth, the use of chemical adhesives to make the new reinforced concrete and concrete bonded firmly, and the new reinforced (Commonly known as anchorage) can play the desired performance of the design. The tension acting on the anchorage is transferred to the concrete through the chemical adhesive. Chemical planting bar is simple, fast and fast, safe and reliable, which is widely used in structural reinforcement, reinforcement, new and old structure connection, buried steel, buried steel components and so on.
In the led display installation project is mainly used for the formation of the civil structure, the original place without embedded joints, through the chemical structure of the steel structure of the framework and the civil structure of the structure together, the main product is the chemical anchor bolt.
Third, the basic description of external decoration works
led display exterior decoration works is the use of structural joints or adhesives will be decorated decorative materials to the outside of the steel frame, so as to achieve a beautiful appearance, and to achieve waterproof (for outdoor) and other protective purposes.
Commonly used decorative materials
Stainless steel: general decoration of the use of stainless steel mainly matte stainless steel, mirror stainless steel, can be selected according to customer requirements. Commonly used thickness of 0.8 mm, 1.0 mm, 1.2 mm, 1.5 mm, etc., is generally based on the size of the package edge to determine the thickness of the material
Aluminum (buckle) plate: aluminum plate is the choice of aluminum alloy sheet by mechanical means to a fixed size, fixed by the connector to the steel frame, the color can choose a variety of shortcomings, the cost is higher, the size of the pre-do, change.
Aluminum plastic plate: is a very common use of a decorative material, the structure is covered in a plastic substrate layer of thin aluminum layer, in the exposed surface of the paint layer using fluorocarbon spray way to protect the advantages of more color, good weather resistance, Light weight, easy on-site production. Common specifications are indoor plate, outdoor board; thickness of 3 mm (indoor), 4 mm (outdoor).
Other materials: commonly used other materials are glass glue, weather sealant, structural sealant, aluminum tube, wood keel, wood plywood, etc., these materials are mainly used as an external decorative plate substrate and sealed, waterproof.