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High-rise Concrete Pump Trailers

May 12, 2021

As people’s living standards continue to improve, high-rise buildings have become ubiquitous. The higher the floor, the higher the requirements for concrete pump trailers during construction. As the concrete pumping height increases, the delivery pressure of the trailer concrete pump needs to be increased. As it increases, the difficulty of pumping will increase, and many problems such as concrete segregation and pipe blockage are prone to occur. Therefore, more attention should be paid when concrete trailer pumps are used for high-rise pumping.

concrete pump trailers

1, When the concrete trailer pump is used for high-rise pumping, it is also necessary to ensure that the length of the horizontal pipeline is not less than 15% of the height of the vertical pipeline, because this will ensure that there is enough resistance to prevent the trend of concrete backflow, otherwise it may cause the S tube to reverse difficult.

2, Before high-level pumping of concrete pump trailers, the gap between the cutting ring and the glasses plate should be adjusted. Generally, the maximum gap should not exceed 2mm. Otherwise, the trailer concrete pump will not be able to be pumped or the material will be discharged during the pumping process, and the pipeline will even be blocked.

3, During the pumping process of the trailer concrete pump, the concrete pump stop time should not be too long. If the concrete pump stop time exceeds 20 minutes in special circumstances, the main cylinder should be moved every 10 minutes to properly move the concrete in the pipeline to prevent solidification.

4, When the concrete trailer pump is pumping in high floors, when the vertical conveying height exceeds 150 meters, a pipeline stop valve must be connected between the discharge port of the concrete pump and the first elbow of the horizontal pipeline. When the concrete pumping stops for more than 5 minutes, the ring valve should be closed to prevent concrete leakage and cause pipe blockage. When re-pumping, the stop valve should be opened first, and the main cylinder should be activated to make the concrete in the pipeline move smoothly. After normal pumping, high-level pumping should not frequently activate the distribution valve and reverse pumping.

5, When the concrete pump trailers is used for high-level pumping and laying pipes, attention should be paid to the 90-degree bend from horizontal to vertical, and the bending radius is not less than 500mm, otherwise it is easy to be blocked. The elbow should be easy to disassemble, and the piping layout should be firmly fixed to prevent it from shaking off and hurting people. The wall thickness of the delivery pipe and the sealing conditions of each joint within 50 meters before the outlet of the concrete trailer pump should also be checked frequently.

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