Installing and packing method of large-scale firework curtain

Abstract

The invention relates to an installing and packing method of a large-scale firework curtain, belonging to the lifting technical field. The total length of the firework curtain is 90m and the firework curtain is divided into three groups of curtains. During the performance, the upper truss of each curtain is lifted by two Liebherr mobile cranes with the maximum load of 250 tons, the lower three layers of curtains raise and fall in turn to set off fireworks and form different pictures. In the packing process of the curtain,the two mobile cranes with the maximum load of 250 tons are also used for each curtain, a larger crane arm is selected for the packing process compared with the normal performance; the crane arm falls down to increase the operating radius; the upper truss of the entire firework curtain is used as a special hanger; the three layers of curtains are all connected on the lower part of the upper truss; and the crane lifts the whole upper truss and pulls all the curtains upto fold in a container. The installation mode is improved to save manpower, greatly reduce the installation time, avoid the hidden danger, protect the firework curtain and the fireworks and eliminatethe possible fault point generated in the installation process of the fireworks; and the method of the invention is suitable for the installation of the large-scale firework combined curtain.

Description

technical field [0001] The invention belongs to the technical field of hoisting, and in particular provides a method for installing large-scale fireworks screens in boxes. It is suitable for the installation of large-scale fireworks combination screen. Background technique [0002] For the large-scale fireworks screen at the Tiananmen Square Gala celebrating the 60th anniversary of the founding of the People's Republic of China, the entire screen needs to be folded into a screen box for overall transportation or performance. The large-scale fireworks screen is an important part of the fireworks in the 60th anniversary party of the National Day in the capital. The large-scale screen installation in front of the Monument to the People's Heroes displayed three beautiful fireworks pictures in sequence. The perfect fireworks show created the glory of the nation. The net screen device needs to fold several pieces of huge net screens tied with fireworks into the net screen box in...

AI Technical Summary

Problems solved by technology

[0003] 1. The screen is soft and difficult to handle: All screens use 0.8mm steel wires, which are woven into a 20mm×20mm square to form a large fine steel wire mesh of 25m×10m, which is characterized by both toughness and softness. It is very easy to cause grid deformation and form hanging links between folded grids or fireworks, which may easily cause damage to the screen.

[0004] 2. The length of the screen is long, the weight is heavy, and it is difficult to install manually: there are 3 screens, each with a total length of 90m, every 30m is a unit, and every 10m is a piece of net, a total of 27 screens

If the screen is manually carried and packed, it will inevitably cause bending, trembling and friction of the screen, making it difficult to protect the ignition head and the wire, and may also cause the screen and the fireworks to be connected to each other or the wire to be broken or poor contact. There may be a large area of ​​unignited phenomenon during discharge, which will affect the overall picture effect

Once such a fault occurs, it is not easy to find and deal with it

Moreover, static electricity is likely to be generated during manual handling, which is likely to cause fireworks to burn

[0006] 4. The manual handling takes a long time, which affects the overall project progress: it takes 2 days to complete the manual installation of the screen and packing

For each drill, all screens need to be installed, and there is also time for live debugging of LED screens, all electrical appliances, winch debugging and problem solving, so the time for fireworks installation is required to be shortened as much as possible, and manual installation cannot meet the time requirements

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