It is this 4.0 version of the fine pump truck built with the craftsman spirit that won the Hunan Province's first innovation award and became one of the 10 products that won this honor. With 62 patents, Zoomlion's high-tech, high-efficiency, 56-meter concrete pump trucks are 5% to 8% more efficient than similar products in the market, and have 2% to 4% lower overall energy consumption. “It has set an industry benchmark. , And promote China's construction machinery industry upgrading."

Craftsmanship

Upgrade Industry 4.0

“This is the crystallization of our R&D team.” Wu Dezhi filled with emotion. In order to solve the problem of fatigue cracking of structural members, the project team continued operations at an experimental site full of dust and noise to perform structural fatigue test. In order to measure the vibration amplitude of the boom, the staff are all in the test field and stay for 20 hours...

In order to meet customer needs, Zoomlion launched a 4.0 product upgrade strategy in 2015 and set up a product project focus group.

"The reliability of the structural parts is a key factor in determining the life of the pump truck." Wu Dezhi said, therefore, improving the service life of structural parts has become the key to improving the quality of pump trucks.

In the past, the development path for pump trucks was that products were developed and manufactured, sold to customers, and then went to the construction site. There are problems in the actual operation after the user feedback back to the manufacturing company. In order to solve the problems in a targeted manner, Zoomlion project team proposed a simulation method for the fatigue life of pump frame components based on virtual prototypes for structural components such as booms and underframe legs, and predicted the fatigue life of structural components at the design stage. Different fatigue stress thresholds are set for each weld to ensure that each weld has the required fatigue life. Then, an on-site equivalent test is performed.

In some places, the expected lifespan is not reached, and it will start again. In the winter of 2015, the trials entered a critical period. In a period of more than three months, the workload of pump trucks was simulated for more than 10 years. Every day they had to work without interruption. “Each person must work 12 hours a day, often at the same time. In the middle of the night, cold, hungry and trapped are the deepest memories of that time,” said the project team staff.

Hard work pays off. The test results of the equivalent bench test in the field show that the booms and underframe legs and other structural parts of the 56-meter arm concrete pump truck that has been fatigue-optimized have reached a life of 450,000 square meters without cracking, which is a traditional design life. 3 times, to achieve the world's leading level.

Market Voting

Fine pump truck leads the industry upgrade

With 62 patents, Zoomlion's high-precision, high-efficiency, 56-meter concrete pump truck has achieved breakthrough improvements in terms of reliability, stability, maintainability, and other common issues in the industry: high-pressure pumping systems equipped, pumps The delivery efficiency is 5%-8% higher than the industry, and the energy consumption is lower than the industry's 2%-4%. The boom vibration damping technology achieves the end-of-arm vibration control within 200 mm under all operating conditions to ensure construction safety.

In addition, this seemingly bulky "Transformers" is actually very smart. It integrates various intelligent applications such as intelligent self-diagnosis, automatic adaptive control and remote intelligent fault diagnosis technology. For example, the 4.0 technology pump truck is equipped with three-level fault self-diagnosis technology: self-inspection, process self-test and shutdown detection. Diagnose the fault - self-repair the entire process of intelligent self-diagnosis, to achieve the full control of the health of the product.

Therefore, as soon as the new 56-meter pump truck was launched, it was sought after by the market. As of 2016, it has achieved a total sales volume of 2.12 billion yuan, which is the largest in the world.