In addition to ensuring the quality of the screen body, there is another very important aspect of the column type LED display that has to be considered, that is, the column of the LED display. The safety of the outdoor LED display column can be investigated from the following three aspects: Come and have a look with Winbonying.
Column outdoor LED display
01. Inspection of the base of the LED display column
There are two main types and layouts of the foundation: 1. One is the balanced gravity type, that is, the upper load is mainly balanced by the gravity of the large-volume foundation, which is generally a concrete foundation. This base form is suitable for use when the soil is soft and there is an open construction site. 2. The other is the pile foundation type, which is mainly based on reamed piles. This type of foundation method can be selected when the construction site is limited. When determining the base of the advertising screen, the initial drawings and construction materials must be checked first, and then the base must be excavated when the conditions permit, to find out whether the base method, burial depth, scale and other conditions are consistent with the drawings, and The strength of the base bolt of the LED display screen is sampled and tested. In other on-site surveys, when choosing a balanced gravity-based advertising screen, special attention must be paid to whether the foundation soil around the root of the steel column is uplifted, loose, and formed after the foundation is shaken under the action of wind load. If the soil surface collapses, it means that the base anti-overturning can no longer meet the requirements. There is a danger of collapse under the action of strong wind at any time, and it must be reinforced immediately.
Column outdoor LED display
02. Check the material of the column and the quality of the connection with the foundation
First of all, the skew of the steel column of the LED display must be measured. The skew of the steel column must not be greater than 1000/H. It must be measured in two directions; the second is the inspection of the steel quality of the advertising screen steel column. The appearance quality of the steel can be inspected. Divided into uniformity, whether there are interlayers, cracks, non-metallic doping and significant segregation and other items. When in doubt about the quality of steel, the safety of structural members should be ensured. Finally, check whether the steel pipe column is corroded and the quality of the protective coating for the steel structure. The quality of protective coatings for steel structures shall be tested in accordance with the current relevant national product standards on the quality of coatings.
The outdoor LED display steel pipe column and the foundation are generally bolted or welded. For bolted connections, check for missing bolts during the inspection, and the bolts must not be deformed, slipped or loosened; if there are design drawings, the specifications and models of the bolts must meet the design requirements; the bolts should be treated with rust prevention. If the corrosion is serious, it must be replaced immediately, and the bolts should be fastened firmly and reliably; for high-strength bolts, the embedding depth of the bolts must meet the requirements of the specification.
Column outdoor LED display
03. Inspection of the upper steel frame member system
At present, the connection between the steel column and the upper steel frame member system usually adopts the following two forms: 1. One is T-shaped, and its main frame is formed by the T-shaped fixed connection of the steel column and the upper transverse main beam. The LED display screen is connected to the T-shaped rigid frame structure through various pendants and diagonal braces. 2. The other is a space truss type. The main frame is welded by an independent steel column and several parallel horizontal main beams on the upper part. The main beams are connected by horizontal and diagonal supports to form a space truss system. The display screen is directly installed on the main frame.
Outdoor LED display columns are top-heavy, and there are more or less potential safety hazards after a period of use. The main structure of the LED display must be inspected and maintained regularly to ensure safety.
