The size of the Olympic cauldron, what is the Beijing Olympic torch called

The cauldron is 32 meters long, weighs 45 tons and has a maximum diameter of 12 meters. The main cauldron usually lies on the top of the "Bird's Nest", and it can not be pushed out and turned up until the last moment before the ignition, so that the lower part of the torch tower and the bowl belt above the "Bird's Nest" can be seamlessly connected, which is very difficult. "45 tons is just the weight of the torch tower itself, there are running trolleys and track equipment under it, plus the roof beams, the total weight that actually falls on the bird's nest is 405 tons.

Li Tingxiang, manager of the project department, said: "The bird's nest is a steel structure, and the thermal expansion and contraction nature of the metal makes its size change every day, expanding during the day and shrinking at night, and the height error of the bird's nest in winter and summer is about 700 mm, which brings problems to the positioning of the main cauldron." The staff overcame these difficulties one by one.

Due to the proximity of the experimental site to the Beijing-Shenyang Expressway, the TS engineering team used a fence of 100 meters long, 50 meters wide, 40 meters high and 8 meters thick to fully wrap the torch manufacturing site and its experimental facilities, and the staff began to carry out various experiments of the main cauldron in the experimental field.

1,000 yuan to build the main torch tower.

Wang Wenli said that most of the steel of the cauldron tower is handmade, not mass production, because there are more than 2,000 pipe rods to build the skeleton of the main cauldron tower, and there are no two exactly the same, so the main structure of the main cauldron tower is all composed of special-shaped steel pipes, they are only the same specifications and materials, long and short sizes, and the diameter of the pipe rods is also completely the same as the thickest 399 mm, and the thinnest is only 70 mm.

According to reports, the beautiful red and white coat of the main torch tower is made of 1026 pieces of 1 mm thick rusty steel plate, in order to reduce the resistance of the wind, each piece of skin has countless small holes, the overall cost of the torch is close to 1,000 yuan.

The maximum error of hoisting is 2 mm.

Although the main torch tower is 32 meters high and weighs 45 tons, plus other auxiliary equipment, the total weight of the main torch tower is 405 tons, but the main torch tower from the usual lying place to stand to the edge of the bird's nest, the positioning error can exceed 2 mm, Wang Wenli said more than 2 mm, and the bolt is inserted.

Only so, the nest is a steel structure, the thermal expansion and contraction nature of the metal makes its size change every day, expanding during the day, shrinking at night, and the height error of the nest in winter and summer is about 700 mm, which brings problems to the positioning of the cauldron.

In order to hoist the torch tower, the national only 800-ton crane came in handy on the day of hoisting, the wind blew, forced to stop the lifting process, if there was a slight shaking, it was easy to collide with the bird's nest steel beam structure, the wind made the main torch tower several times the bird's nest steel beam passed by, and finally all the team members stood on the beam, with all their strength to pull the traction rope, before the main structure of the torch tower fell smoothly in the bird's nest.

Erect the torch 2 hours before ignition.

The Olympic cauldron tower is 32 meters high and weighs 45 tons, with a total weight of 405 tons plus other auxiliary equipment, and the error in installation and positioning is no more than 2 mm.

The torch of the 2008 Olympics is called "Xiangyun".

It is designed by Lenovo (Beijing) **** Innovation Design Center, which is inspired by the auspicious cloud pattern of "symbiosis and harmony", with a logo representing Chinese culture, and the main body is red and silver.

The 72-centimeter-long "Xiangyun", weighing 985 grams, is fueled by the clean fuel propane, has a burning time of 15 minutes, a flame height of 25 to 30 centimeters at zero wind speeds, and can keep burning in the case of strong winds of 65 kilometers per hour and heavy rain of 50 millimeters per hour. The manufacturing process adopts light and high-quality aluminum alloy and hollow plastic parts design, and the lower half is sprayed with high-touch plastic paint, which is comfortable and not easy to slip.

In the end, the Aerospace Science and Industry Group worked together in Lenovo (Beijing) to complete the production of torch samples combining the shape of the torch and the combustion system, forming a complete design of the Beijing 2008 Olympic torch, which was officially used after being approved by the International Olympic Committee in January 2007.

Implied meaning. The Beijing 2008 Olympic torch was inspired by the "auspicious clouds" motif, which is a harmonious and harmonious source. The cultural concept of Xiangyun has a history of thousands of years in China and is a representative symbol of Chinese culture.

The design of the torch shape is inspired by traditional Chinese paper scrolls. The use of lacquer red on the torch, which originated in the Han Dynasty, distinguishes it from the design of previous Olympic torches, and the contrasting colors of red and silver produce a striking visual effect. The upper and lower proportions of the torch are evenly divided, and the auspicious cloud pattern and three-dimensional relief craft design make the whole torch elegant and gorgeous, and the connotation is heavy.

The length of the Olympic torch is not fixed, and the host country of the Olympic Games can set the length of the Olympic torch according to the actual situation, as illustrated below

1. Munich Torch. At the 1972 Munich Olympics, the first torch maker in 1936, Krupp, was again invited to design a torch made of stainless steel 75 centimeters long, weighing 1,35 kilograms, fueled by liquefied gas, which could burn for 20 minutes.

2. Los Angeles Torch. The torch for the 1984 Los Angeles Olympics, designed by Turner's Newhart, weighs kilograms and centimeters long, and is made of aluminum and copper alloys, with propane as fuel.

3. Beijing Olympic torch. It is 72 cm long, weighs 985 grams, burns for 15 minutes, and has a flame height of 25 to 30 cm at zero wind speed, which can be recognized and photographed in both bright and daylight conditions.

The Beijing Olympic torch is 72 centimeters long, weighs 985 grams, burns for 15 minutes, and has a flame height of 25 to 30 centimeters at zero wind speed, which can be identified and photographed in both bright light and daylight conditions. In terms of process, the cone surface profile one-time forming technology and aluminum corrosion and coloring technology are used. The fuel is propane, which meets environmental requirements.

The shape of the torch is made of environmentally friendly materials.