Crane Liebher: detailed description and technical data

The "Liebher" crane is one of the most common in the installation of high-rise structures.

German firm produces "Liebher LTM" and "LiebherLR "from 2007, until now the device of cranes has not undergone significant changes.Every hundred vehicles are delivered to different countries of the world, including Russia.The Liebher crane has established itself as a reliable and multifunctional mechanism.

History of creation

Liebher was founded in 1949family of the same name. At that time, a small company began to raise the economy of post-war Germany, mainly producing household appliances and aviation components.

Then the company began to expand and createsubsidiaries. The structure was transformed into a holding company. The production of construction equipment began. Now Liebher is one of the world's leading companies in this industry. The annual turnover exceeds 8 billion dollars. In the subordination of more than 130 companies around the world.

Cranes

The first Liebher crane was released from the girderarrow. Compact design and high power have made the car very popular in Germany. The country was rebuilt after the war, and construction equipment was extremely in demand. Having managed to occupy this niche in the market of West Germany, "Liebher" secured an unprecedented rise.

Every year the cranes were modernizedGerman firm. In the seventies, many models already had a new swivel platform, which was located at the top of the tower. Crawler cranes have become very popular due to their stability precisely thanks to the company "Liebher", which improved the connection of the frame with the trolley.

The first in the world

The Liebher tower crane of the LTM series is one of the mostsold. In 2007, he set a world record for the length of the telescopic boom. At the same time the machine was also the most powerful in its class. This record could be beaten only eight years later by Chinese designers from Zumilon. The crane is intended for installation of objects of high complexity.

Turning design involves a hugeshooting space. It gives a good overview of the crane operator and the ability to work from one parking lot with several objects. The running frame was made of solid steel. Before that, mostly sheet metal was used.

To the frame are mounted four outriggers, which are supported by hydraulic cylinders. This provides greater stability during operation. Crane "Liebher" as a matter of fact set a new direction in mechanical engineering.

Working Equipment

Metal construction boom allows it to shareon the section. These sections can be driven out with a rotor. The length of the boom depends on the equipment. The latest one assumes a total length of sections up to one hundred meters. The maximum possible angle of ascent is almost ninety degrees. The hydraulic motor, in which the axial pistons are located, extends the arrow. The winch drum has a planetary gear, which greatly increases the load capacity of the crane.

The running frame is connected to the tower by a wind vane, inwhich is a pivot pivotally mounted on top. The weight of the crane is about 360 tons, the weight can be increased four times, depending on the equipment. The crane has a two-hundred-ton counterweight, which consists of sixteen slabs.

Crawler Crane

Cranes on caterpillars are used mainly on sand pits because of high cross-country ability. They can work on several sites from one parking lot or move between them.

The towers do not have a turntable. The crane operator's cab is installed in the front part of the running frame. According to the company, this design provides greater security.

In 2010, the LTM crane fell due to a gust of wind,which brought down the rotor of the mounted wind turbine. No harm done. Crawler cranes of the brand LR can have an arrow length of up to 100 meters. The metal structure is optimized and made of new steel alloys. Transportation is assembled, which allows the machine to quickly begin to perform tasks.

Liebher cranes: technical specifications

German cranes have a high load capacity atthe extreme length of the boom. Tower cranes are equipped with six-cylinder diesel engines. The liquid cooling system provides the possibility of a long working process. The engine makes about 1800 revolutions per minute and has a capacity of up to 370 horsepower. Electronic crane systems are powered by batteries with a capacity of up to 170 amperes / hour.

The security system includes the limiter "Likkon".

Hydraulic actuators are modified with fuses andshut-off hydraulic valves, which are included in the work process in the event of a rupture. During transportation the boom and winch are transported separately. The mounting process is greatly accelerated by hydraulic cylinders.

At the moment, Liebher cranes are one of the most popular in Western and Eastern Europe. The German firm plans to create a large-scale concern on the territory of the Russian Federation.

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