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What technology is used for the thousand-ton crawler crane
Sep 30,2021
Crawler crane is a kind of lifting equipment widely used in various fields of national economy. With the development of China's economic construction, the demand for it is increasing, and the requirements for its performance and lifting weight are becoming higher and higher. Driven by the demand of large-scale projects, China's large-scale crane manufacturing industry has rapidly crossed the threshold of thousand-ton class. Now let's introduce what technologies are used in the thousand-ton crawler crane:
1. Dual power system and control technology
Thousand-ton crawler crane has high requirements on engine power and working reliability. In order to meet the requirements of conventional engines, dual engines are used to provide power, and each engine forms an independent closed circuit.Double engine double hydraulic system and control technology is studied, according to the actual demand to use double or single engine working engine, double work at the same time according to the requirements of the power system automatic adjustment to ensure double with the same engine speed to provide the same torque, thus make the twin engine balance of work and not lead to a certain engine partial load.
2. Parallel optimization design technology
The thousand-ton crawler crane has many working conditions and complex structure, making it difficult to optimize and match the whole machine.In order to solve the problem of parameter optimization of the whole machine components, detailed research and analysis of the whole machine force system and the bearing characteristics of each component, the overall planning, the establishment of the whole machine model, based on modern numerical analysis theory, realize the optimization of a large number of parameters of the whole machine, the formation of the overall parameters and the implementation of optimization technology.This technology facilitates the determination and optimization of the parameters of each component, reduces the weight of each major structural component, and shortens the product development cycle.
3. Super long boom system technology
The combined boom of thousand-ton crawler crane has a length of more than 200 meters, which is super long and large flexibility boom. The stability and safety of boom lifting and operating conditions need to be solved.The variable section and wall thickness boom system was optimized, and the double waist rope technology with length compensation function was studied, which reduced the overall weight of the boom, improved the stiffness of the boom, solved the problems of the stability and operation safety of the boom, and greatly improved the bearing capacity of the boom.
4. Matching technology of performance and transportation
The performance of thousand-ton crawler crane is super high, and the parts need to be bigger, but the size of the parts needs to be smaller to meet the transportation regulations. In order to solve this contradiction, the slewing bearing with small limit size and large bearing capacity is developed. The splitting technology is adopted for large structural parts such as frame, turntable and caterpillar frame, which not only meets the requirements of high lifting performance for component strength, but also meets the transportation regulations.
By using these technologies, the power and working reliability requirements of 1000-ton crawler crane engine are solved. Solve the problem of parameter optimization of the whole machine components; Solved the problems of boom stability and operation safety; It solves the requirement of high lifting performance for component strength. Thousand-ton crawler crane has the advantages of high reliability, high safety and high lifting performance.
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