Who is the world's largest excavator?

Who is the world's largest excavator?

The protagonist of this article is an "excavator", and I am like an excavator, digging through every corner of the Internet about "the world's largest excavator". Although this is not a new topic, readers will be attracted by its shocking pictures and amazing data every time. The editor attempts to elaborate on the topic of "the world's largest excavator" from multiple related clues, and strives to leave readers with a "more accurate, more comprehensive, and more novel perspective" understanding. I am not an excavator professional, but I prefer to search, organize, describe, and verify this interesting scientific topic for everyone from the perspective of a learner. I hope it can give you a new and profound knowledge growth point.

1. What is an excavator?

Excavators are heavy construction machinery, and their most important feature is a bucket that looks like a big hand. The materials it excavates are mainly soil, coal, silt, and pre-loosened soil and rocks.

2. The ancients didn’t have excavators, what should they do? In ancient times, without modern technology and advanced tools, human beings relied more on their own physical strength and strong will to work. In ancient my country, there is the story of "The Foolish Old Man Moved the Mountains". An old man with a strong sense of responsibility and extraordinary perseverance, the Foolish Old Man, knew the principle of "to get rich, build roads first", so he was determined to lead the villagers to remove the obstacles that blocked their travel. Big mountains. They rely on the most primitive human and animal power, and they want their descendants to persist from generation to generation. If the mountain gods and the Emperor of Heaven hadn't been moved, and the Emperor of Heaven sent Hercules to move Taihang and Wangwu away, we don't know how many generations of hard work they would have needed.

Looking around the world, in the vast history, working people have built many great projects that will last forever with their sweat and blood and tears. When we look at these monuments and think about the wisdom and hardship of the ancients, we are all shocked. The pyramids of Egypt are engineering masterpieces 4,500 years ago. The rulers forced thousands of slaves to carry the huge stones on their shoulders, or use animal power and rolling logs to transport the huge stones to the construction site. Day after day, they built palaces for the emperors who would live in the afterlife. According to historical records, 100,000 people participated in the construction of the largest Pyramid of Khufu each time, with rotation every three months, and it took 20 to 30 years to complete.

The hardship of labor, even suffering and oppression, prompts human beings to strive to explore better production methods and invent better tools. But it was not until modern times that the advancement of productivity entered an era of acceleration with the promotion of science and technology. 3. The earliest excavator The excavator was invented in the 1840s. Prior to this, in the late 15th century, silt dredgers appeared in Italy, where water shipping was the main mode of transportation. This is considered the prototype of the excavator.

According to "Leonardo Da Vinci's Notes", a silt dredger consists of two small boats side by side, with a runner set up between the sides. A bucket is installed on the runner, driven by manpower, allowing the bucket to penetrate the river bottom to dig out the silt and clean it. river channel.

From 1833 to 1837, American Otis designed and manufactured the first steam engine-driven excavator.

Some data say this is the world's earliest excavator, but judging from the maturity and advancement of its structural design, I think it should be the first excavator that was mass-produced after the prototype was improved and used in production practice.

The exquisite model of the world's earliest excavator truly restores the characteristics of the iron-wood hybrid structure and steam engine drive. In this way, the excavator has a history of more than 180 years, from the initial human and animal power to the current hydraulic drive, precision operation, CNC operation, Unmanned driving, remote control, etc., technology continues to improve, which not only improves the performance of excavators but also adds more and more high-tech elements. This not only greatly changed human life, but also rapidly improved productivity. 4. The earliest excavator that appeared in China. In the early days of the founding of the People's Republic of my country, with the advancement of industrial construction, excavators also began to appear in China.

The Haizhou open-pit coal mine in Fuxin, Liaoning, was once the largest open-pit coal mine in my country. Here is a giant construction machinery from that year. You can tell from the words "CCCP" that this is a piece of equipment produced in the former Soviet Union. Probably because the direction of its force is upward, this device is also called an "electric shovel" or "electric pick."

The Haizhou open-pit coal mine is known as the "golden nail" in the industrialization process of New China. The Soviet electric shovel, as a symbol of advanced industrial technology at that time, was designed on the back of the 1960 version of the 5 yuan RMB. 5. The protagonist appears: The world’s largest excavator. Please pay attention! When looking at these pictures, please look at the reference objects in the picture, such as people or cars next to the machine, so that you can experience the size of these behemoths!

Now, let us worship the protagonist of this article together. The giant machine you see in this picture is the world’s largest excavator! He is the Bagger series excavator.

Strictly speaking, the Bagger series excavators are original creations of Krupp. The earliest Bagger 260 was produced in 1962, and the masterpiece 288 was produced in 1978. But the Bagger series is not all produced by Krupp. There are two companies in Germany (O&K and MAN-TAKRAF) involved in the production. Because they both inherited Krupp's design concept and Bagger naming, and the Bagger 288 produced by Krupp in 1978 and the Bagger 293 produced by MAN-TAKRAF (Man-TAKRAF) have similar technical characteristics and performance, so the common The narrative is that Krupp produced the largest excavator in the world. In fact, this record has been broken by the Bagger 293 produced by the German TAKRAF company in 1995.

The more accurate name of this behemoth is "bucket-wheel excavator", and its English name is: Bucket-wheel excavator. Some people also call it an earth mover, an open-pit mining machine, and an open-pit mining truck. In any case, it is currently "the largest mobile machine on the earth."

Guinness World Records Largest land vehicle Heaviest land vehicle (both Bagger 293) Guinness World Records The largest and heaviest movable machinery on land KRUPP, MAN-TAKRAF1995.

The giant version of the excavator that can be called the world’s “top-of-the-line” excavator! If you are lucky enough to have close contact, it will be like being on an alien planet in a science fiction movie.

6. Appreciate the best of the world from multiple angles

Bagger 288/293 height reaches 96m

The height of a 32-story building exceeds the height of the Statue of Liberty in New York.

Amazing length, feel the length of Bagger 288/293

Bagger 288/293 and football field composite picture

Length 240m, chassis width 49m, height 96m

Feel the size comparison between a Big Mac and a standard football field

The total length is almost 2.5 football fields long

Bagger 288 length 225m≈19 trucks (12 meters long)

Bagger 293 length 240m≈20 trucks

huge chassis

An alien world-like steel city

The Bagger 293 chassis has a width of 49m and is supported by 12 crawlers, 8 at the front and 4 at the rear. Each crawler has a width of 3.8m. The large surface area of the crawlers means that the Bagger 288/293 has very little ground pressure (1.71 Pa), which allows the excavator to work on gravel. Driving on , dirt or even grass without leaving obvious indentations. Its minimum turning radius is approximately 100 meters, and its maximum slope is 1:18 (5° tilt). huge bucket wheel

Bagger 288 is equipped with 18 buckets with a capacity of 6.6m³

This is equivalent to a capacity of 44 bathtubs per bucket (assuming 150L per bathtub)

The secret of the giant steel wheel

Bagger 288 driver

The four motors driving the bucket wheel are arranged vertically from top to bottom.

Drive power: 3360kW (4×840kW)

The bucket wheel diameter reaches 21.6magger 293. Now equipped with 20 8.6m³ buckets, the wheel bucket drive uses three 1680kW motors, each with a total power of 5040kW, which is twice that of Bagger 288. It has 57 bathtubs to compete with its capacity. 6600 horsepower) is equivalent to the horsepower of 100 large tractors. The amazing power of the bucket wheel may not be intuitive enough just to talk about the data. Look at the example below. This is an accident, but it shows the huge power of the bucket wheel. An 80-ton bulldozer was unfortunately dug up and It was stuffed into the wheel bucket bearing and flew up about 20 meters. Please estimate the force of the bucket wheel.