The ability of the steel member to resist the load is greatly reduced, so how to better maintain the outdoor LED display has become our necessary homework.
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Release time :2023-05-17
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The ability of the steel member to resist the load is greatly reduced, so how to better maintain the outdoor LED display has become our necessary homework.
Generally, the main support structure of outdoor LED display screens is usually made of steel materials, because in the open air environment, affected by factors such as temperature, humidity, harmful substances, etc., it is extremely easy to be oxidized and cause corrosion, and even serious corrosion may be caused. The ability of the steel member to resist the load is greatly reduced, so how to better maintain the outdoor LED display has become our necessary homework. So what key points should be paid attention to before installation? I think it should be considered from the following aspects:
Usually, the outdoor LED display screen has a large installation area, and most of them are installed in densely populated places. The design of the steel structure should consider foundation, wind load, waterproof, dustproof, moisture-proof, ambient temperature, lightning protection, surrounding population density, etc. factor. At the same time, auxiliary equipment such as power distribution cabinets, air conditioners, axial fans, lighting, etc. must be placed in the steel structure, as well as maintenance facilities such as horse tracks and ladders. Therefore, during implementation, the entire outdoor screen steel structure should have design drawings that have passed the review of the competent government department to ensure the reliability and safety of the entire steel structure.
The outdoor LED display is installed outdoors, often exposed to the sun and rain, the wind blows the dust cover, and the working environment is harsh. If the electronic equipment is wet or severely damp, it will cause a short circuit or even a fire, causing a failure or even a fire, causing losses; therefore, the screen body and the screen The junction between the body and the building must be strictly waterproof and leak-proof; the screen body must have good drainage measures, and once water accumulates, it can be discharged smoothly; pay attention to waterproof and moisture-proof.
The outdoor LED display screen should be installed with ventilation equipment to cool down, so that the internal temperature of the screen body is between -10°C and 40°C. An axial flow fan is installed on the back of the screen to discharge heat; when the outdoor LED display is working, it will generate a certain amount of heat. If the ambient temperature is too high and the heat dissipation is poor, the integrated circuit may not work properly or even be burned, so that the LED display The system is not working properly.
The electronic components in the outdoor LED display are highly integrated, and the sensitivity requirements for anti-interference are getting higher and higher. Lightning can harm the display system in various ways. Generally, it may directly hit the screen and then be released to the ground through the grounding device. Causes mechanical, electrical and thermal damage where the lightning current passes. The solution is equipotential connection, that is, the ungrounded or not well-grounded metal shell, the metal sheath of the cable, the metal frame in the display screen and the grounding device are reliably welded and connected to prevent these objects from being induced by high voltage or lightning on the grounding device. The transmission of the high ground potential causes an overvoltage counterattack to the internal insulation of the equipment and the cable core wire. Outdoor LED displays will also be attacked by strong electricity and magnetism caused by lightning. In order to discharge the large current caused by lightning in time, reduce the overvoltage that appears on the equipment, and limit the intrusion wave of lightning. Usually, lightning protection devices should be installed on the display screen and buildings.
Anyone who is engaged in the LED industry knows that rigorous and professional installation and debugging are essential for outdoor LED displays to be used well. So for technical construction personnel, it will be better to know good outdoor construction and maintenance skills The promotion of business advertisements and information dissemination is also something that technical construction personnel must be familiar with.
Generally speaking, the installation of outdoor LED display screens can be roughly divided into four links: field survey, equipment construction, product installation, and product debugging.
Specifically, before the installation of the outdoor LED display screen, a new and unified test should be carried out for the parameters such as the specific environment, topography, luminous radiation range, and brightness acceptance. In order to ensure the smooth installation of the billboard, it is required The commanding personnel implement a unified hoisting plan to ensure that the equipment can be used normally and stably. Different situations are treated differently, so as to adopt a more appropriate method.
When building some outdoor LED billboards, it is necessary to distinguish between wall advertising screens, hanging advertising screens and roof advertising screens. In the actual installation, according to the distance and height, the crane and hoist should be used for segmental hoisting, and at the same time, the personnel above should cooperate with each other. There is a better installation and use process for the LED advertising screen for high-altitude operations. During the construction process, safety and refined operation are the first requirements.
Due to the different radiation ranges, the viewing angles of the LED display screens are also different. The outdoor LED display screens should be fixed and installed according to the field acceptance ability and the normal viewing angle range, so as to ensure that the normal and brightness can be seen from every angle. Balanced image and subtitle information, large viewing angle and appropriate brightness can maximize the benefits.
Subsequent inspections include many areas, such as LED display waterproof, heat dissipation layer, LED display waterproof coating, rain protection area on the display screen, heat dissipation space on both sides, power supply line, etc. These basic parts and components constitute the entire stable Sexy Leroy led display. Of course, the later technical maintenance is also very important. We need to carry out unified management and maintenance for these parts. When the product is rusted, unstable, or damaged, it needs to be replaced in time to ensure the safe use of the entire display.
Of course, as a professional LED display construction personnel, it is not enough to only install, but also need to be familiar with some maintenance and reinforcement methods, which are also one of the necessary skills for installers. Here we share the method of strengthening and rectifying the outdoor LED display after installation:
by setting concrete enclosure or reinforced concrete enclosure, increase the area of the foundation at the bottom of the outdoor LED billboard, and change the uneven settlement of the foundation caused by the small area of the foundation of the billboard and insufficient bearing capacity.
pouring concrete after digging a pit directly under the underpinned foundation.
The method of foundation reinforcement by setting static pressure columns, driven piles, cast-in-place piles and other piles on the lower part or both sides of the billboard foundation.
Inject chemical grout evenly into the foundation, and use the grout to cement and solidify the original loose soil or cracks, so as to improve the bearing capacity of the foundation, waterproof and impermeable.
foundation reversely tilted to achieve the purpose of correcting the tilt of the outdoor LED billboard. There are two commonly used methods for rectifying the foundation of outdoor billboards:
measures to prevent sinking are taken on the side of the outdoor LED billboard foundation with more settlement, and forced landing measures are taken on the other side. The methods of forced landing include: loading steel ingots or stones, building cantilever beams, digging out soil for forced landing, water injection to correct deviation, etc.
In the part where the foundation of the inclined billboard has a large settlement, by adjusting the jacking amount of each part of the billboard, make it rotate along a certain point or a certain line as a whole, so as to achieve the restoration of the original position. Purpose.
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