1 simple hanging chain Simple sling type see 1. This installation method is convenient to adjust the verticality of the luminaire, but the degree of fixing of the sling chain and the bracket and the ability to prevent external interference are poor. Because each main span of the main building has a crane, the crane is walking. The vibration and the accidental collision of the paint in the ceiling of the factory are prone to vibration, which will have a great impact on the service life of the lamp, and the wire to the lamp is not well protected. 2 bracket and boom combined See the combination of bracket and boom. 2. This installation method protects the wires to the lamps, but the steel pipes are not strong, easy to loose, difficult to install, and it is not convenient for the vertical adjustment of the lamps. The consumption of steel pipe and angle steel is large, and a large amount of load is added to the steel structure of the main plant. The anti-corrosion effect of the bracket after painting is not good and not beautiful. Below we simply calculate, if the length of the pole is 3m, the self-weight of the galvanized steel pipe is about 12kg, the self-weight of the angle ∠40×40×4 is about: 17kg, the luminaire is 826 sets, and the load generated is 234749N. And the hydraulic cylinder lifting and north-south movement of the clamp hanger of the first blank span and the second blank span are affected by the trapezoidal bracket. 3 brackets combined with slings and hangers This method combines the shortcomings of the first method and the second method, and has a little improvement on the external interference capability. The amount of steel pipe and angle steel is large, and the damage to the steel structure is large. The corrosion resistance of the bracket after painting is poor, Beautiful, the materials used are many, the connection points are many, the key points are at the hooks, problems are easy to occur, the wire protection of the lamps is not good, and the verticality of the lamps is easy to adjust, which is not easy to install. see. 4 simple boom See the simple boom type. 4. This installation method has a single material, which is easy to protect the wire to the lamp. It is easy to install, but it is not easy to adjust the verticality of the lamp. It is enough to bear the weight of the lamp and the steel pipe. When the external force is applied, the hook can be used. The buffer is applied to protect the luminaire. Moreover, the boom is galvanized steel pipe without corrosion protection and beautiful appearance. We use numbers to illustrate the bearing capacity of this type of installation. The self-weight of galvanized steel pipe is 4.032kg/m, and the weight of the luminaire is about 10kg. If the pole is 3m long and the total weight is 22kg, the channel steel is welded on three sides. Common sense is enough to withstand. It can be seen from the above comparison that the installation method of the continuous casting main building lamps is the best with simple hangers. This method saves Party A a large amount of main materials and maintenance costs after commissioning, but on this basis, the lamps can also be used. The wire protection and the connection between the steel pipes are improved to make it more convenient and safe. The connection between the steel pipes is made of explosion-proof box. The flexible poles with locks are connected between the light pole and the explosion-proof box. The light pole cover is buckled, the explosion-proof box is buckled, the inner wall of the light pole is sheathed, and the explosion-proof box is equipped with wiring. Terminal. Because from the construction point of view, there are many kinds of specialties at the same time during construction, especially the welding profession, and the main building is not closed, it is easy to damage the wire. For the protection of the wire, the explosion-proof box has good sealing performance, fireproof and waterproof, the reliability of the terminal connection is far better than the direct connection between the wires, and the problem is found and maintained, and the flexible pipe serves as a protection. In addition, since there are terminals in the explosion-proof box, the length of the wire worn each time is the distance from the lamp to the lamp, which greatly reduces the damage of the wire and improves the utilization value. 0.6/1kV PVC Insulated Cables,Sheathed Armored Power Cable,PVC STA 0.6/1kV Power Cable Shenzhen Hongyan Wire Industry Co., Ltd. , https://www.hy-cable.com