The fifteen Lantern Festival (March 2nd), a scramjet record movie "powerful, my country" released in the country. Although it is only a documentary, it does not prevent it from becoming a hot piece of blood. This is the story of our great motherland, which shows a lot of precious moments of history.
In the sentence "as long as you want to do, our country now has the ability to be able to do", straight people, a proud emotions arise spontaneously.
Development in the West and revitalization of the Northeast; the rise of the central part of the central part of the East; the first in the East; the world's first growth in GDP; the number 2 of the blue whale, the Dragon number and the national silver screen, the world's largest; the world's largest basic medical security network; the 173 Poverty Alleviation Policies; the largest radio telescope FAST in human history; the world's first world road network. This series of numbers, is the witness of China's manufacturing industry resurgence, the show is a country in a scientific and technological power in the endeavour footsteps.
As a China engineering machinery manufacturing industry "one", the history of the development is tortuous and difficult. At the beginning of the development of foreign buildings, lack of technology, market fundamentals are imported machinery monopoly. However, the enterprises of China's engineering machinery are not afraid of hardships and difficulties, in order to become a powerful country in construction machinery manufacturing, through continuous innovation and breakthrough, the achievements of the proud people have been achieved, and a number of products and technologies are in the top ranks of the world.
Now, please look at the engineering machinery in our country who stand on the international stage of the "powerful central Jack".
Jack: the darling of the Sichuan Tibet Railway - Liugong loader
The Sichuan Tibet railway, as one of the five "heavenly roads" in the Tibet route, is more than 1800 kilometers long, with 430 bridges and 182 tunnels on the whole line. The bridge and tunnel ratio is up to 84%, through the most violent Hengduan Mountains on the earth's geological activities. Its construction difficulty is also famous in the world, as the "favorite" on the Sichuan Tibet Railway - Liu workers' tonnage wheel plateaus loader plays the leading role in the whole project.
Sichuan Tibet railway line to granite cleaning about 40 million cubic meters, equivalent to 15 Pyramid of khufu. Under the high altitude hypoxia condition, the general equipment will be badly powered, and the 5 ton plateau loader independently developed by Liu Gong can effectively shovel 350 cubic slag per hour. 5 tons loader bucket operation plateau thrust moment reached 50 tons, can easily tackle most of the world's rock.
Jack: breaking the monopoly of foreign brands -- Liugong 12 tons of wheel loader
Before introducing the 12 ton wheel loader of Liugong, it was a world record of popular science: the slope full of climbing, 30 degree angle, 20 meters in the line, 28 seconds, and the world record of the 12 ton wheel loader of the willow.
And Liugong 12 ton wheel loader or after China, after the United States Sweden and Japan, fourth country with 12 tons wheel loader, broke the monopoly of foreign brands in large tonnage equipment.
But 12 tons loader production 5 tons is not so simple. First of all, the 12 ton hydraulic torque converter, as the power source of the equipment, becomes a "block tiger". The blade bending of the 12 ton hydraulic torque converter is more than 20 degrees larger than that of 5 tons. It is easy to collapse by traditional manual extraction. The crucial formula of sand core surface coating composition, its success will be controlled within 0.2 mm.
Core making, baking, pouring, cleaning and assembly...... In overcoming the problems, 12 tons of hydraulic torque converter was successfully developed out of manufacturing workers liu.
7 structural parts,
3176 of the 900 kinds of parts,
10 days to assemble......
China first 12 tons of wheel loader in Liugong development line.
Jack: challenge limit conditions - 31 Gizan Metro 47 meters "pump king"
The town is an important fulcrum of economic Gizan link of Saudi Arabia and the Eurasian trade, is an important node in The Belt and Road "line map. As the high desert town, can be called "human extreme conditions", climate and construction standards to become the two largest alpine test equipment "".
In the course of construction, only one side supply pump truck is often stopped, so the pump not only requires the arm length, but also has to extend completely horizontally. In the process of pumping, the pump will test the bearing capacity of the arm of the pump, the longer the arm length is, the greater the pressure of the arm is, and the pressure of the horizontal pump is 3-4 higher than that of the vertical pump. Therefore, the boom times, must be made of high strength steel to manufacture. The world only 4 countries can make the pump, Chinese is one of them.
Jack: a new generation of pump truck king, 31 86 meter long arm pump
At present, 31 can produce 1800 MPa High strength steel plate (steel plate per square centimeter to withstand 18 tons of pressure, equivalent to one finger top up an adult African elephant), can be used to create a new generation of pump car king, a new generation of high strength steel 86 meters super long arm rack pump. China is currently the only one in the world can produce 86 meters long boom pump state.
Jack: underground "aircraft carrier" -- Railway Construction of large diameter full face rock tunnel boring machine (TBM)
The large diameter and full section rock tunnel boring machine (TBM), developed by iron construction heavy industry, is a super equipment developed by our country. In the field of engineering machinery, it has the reputation of the underground "aircraft carrier". 4 storeys high, 230 meters long fuselage, with the installation of more than 50 thousand parts, loaded with driving power, slag and other types of equipment support.
This super equipment is like a "steel worm", where a long tunnel will emerge. Whether it is hard rock or large deformation soft rock, it can deal with it calmly. Even global engineers are talking about the "altered fracture zone" of color change.
The so-called "altered fractured zone" is located on the seismic belt, and because the buried depth of the project is 100 times that of the ordinary subway project, and it is the most dangerous in the extreme working conditions of the world. The rock layer here is very soft and prone to landslides. In the course of tunneling, there are more than three completely different geological conditions, such as altered rock, hard rock and large water, in one day. This is rare in the field of global engineering, and the biggest nightmares of tunnel construction will be "careless machine" if there is a slight carelessness.
In the past, only by artificial slag cleaning, the construction period was delayed for one or two months or even half a year. But now, an ingenious technology of engineers of iron construction heavy industries has ended the nightmare of the whole industry.
Through the double drive of hydraulic motor and motor, the problem of "card machine" can be completely solved. But the two completely different driving systems, how to work together and find the best balance point of hybrid drive, is the key to break through the shackles of technology. The engineers of iron construction heavy industry spent countless sleepless nights in the workshop and the test platform. Through innovation and through the night, the engineers finally grasped the know-how and achieved the "national weapon" that shocked the world.
In addition, China's construction machinery industry has created many "world first".
Xugong 4000 ton crawler crane
Name: the largest 4000 ton crawler crane in the world
Model: Xugong XGC88000 - 4000 ton crawler crane
Performance: 88000 finger torque of 88000 tons
ZOOMLION 101 meter carbon fiber brachial concrete pump truck
Name: the world's longest 101 m carbon fiber brachial concrete pump truck
Model: ZOOMLION 101-7RZ
Performance: pumping capacity exceeds 230 cubic meters per hour
ZOOMLION 5200 ton tower crane
Name: the world's largest 5200 ton revolving tower crane.
Model: ZOOMLION D5200-240 tower crane
Performance: the maximum lifting capacity is 240 tons, the lifting height is 210 meters, and the calibration torque is 5200 tons / meter.
31 full hydraulic leveler
Name: Global hydraulic leveler
Model: 31 SHG190 full hydraulic grader, etc.
Performance: 190 horsepower, stepless speed change, easy operation, advanced positioning, remote control and other advanced functions.
Self-propelled full rotary full casing drill
Model: Shan River intelligent SWRC170 self propelled full rotary drilling rig
Introduction: the world's first self propelled full rotary full casing drilling rig, the average drilling 1m takes only 2 to 3 minutes.
Mine dump truck
Model: Northern share NTE240 type electric wheel mining dump truck
Introduction: breaking the technological monopoly of foreign enterprises in the 220t class mining vehicle field.
