In the actual construction application of concrete pumps, due to long-term continuous operation, complex construction environment and improper operation, various faults will inevitably occur in the equipment. Mastering the diagnosis methods and efficient emergency treatment strategies for common faults is crucial to ensuring the construction progress and reducing economic losses.
Insufficient pumping pressure is one of the common faults of concrete pumping equipments.
The causes of this problem are relatively complex and may involve multiple aspects such as hydraulic systems and pumping systems.
First, check whether there is leakage in the hydraulic system. Loose hydraulic pipe joints, damaged seals or worn hydraulic cylinder barrels may cause hydraulic oil leakage, making the system pressure unable to meet normal working requirements. By observing whether there are oil marks on the surface of the hydraulic pipe and checking whether the hydraulic oil level drops abnormally, it can be preliminarily judged whether there is a leakage problem. If leakage is found, it is necessary to tighten the loose joints in time, replace the damaged seals or repair the hydraulic cylinder.
Secondly, wear of the distribution valve and damage to the concrete cylinder piston will also affect the pumping pressure. After the distribution valve is worn, its sealing performance decreases, which will cause the concrete to flow back during the pumping process; if the concrete cylinder piston is severely worn, the pressure in the concrete cylinder cannot be effectively established.
For these problems, it is necessary to regularly check the wear of the distribution valve and the concrete cylinder piston, replace the worn parts in time, and ensure the normal operation of the concrete delivery with pump.
Pipeline blockage is another common fault that troubles construction.
Unreasonable concrete mix ratio, excessive aggregate particle size, improper layout of the conveying pipeline or too fast pumping speed may cause pipeline blockage. When the pipeline is blocked, first try to use the reverse pump operation, that is, through the reverse pump function of the equipment, suck the blocked concrete in the pipeline back to the hopper, re-mix it and then pump it. If the reverse pump operation is ineffective, the blocked part needs to be disassembled and cleaned. Generally speaking, pipeline blockage often occurs at the elbow, reducer or pipeline interface. The blockage position can be judged by knocking on the pipeline and the sound. After determining the blockage position, carefully disassemble the pipeline at that part, remove the blocked concrete, and clean the pipeline to ensure that the pipeline is unblocked before reinstalling it.
Abnormal noise in the equipment is also a common fault manifestation.
Abnormal noise may be caused by a variety of reasons, such as loose mechanical parts, poor lubrication, transmission system failure, etc. When you hear abnormal noise from the equipment, you should stop the machine immediately for inspection. First check whether the connecting bolts of each component are loose, such as the connecting bolts between the motor and the reducer, the fixing bolts of the pumping system, etc., and tighten the loose bolts. Then check the lubrication of the equipment, check whether the lubricating oil is sufficient, whether the lubrication pipeline is unobstructed, and replenish the lubricating oil or clean the lubrication pipeline in time. If the noise still exists, it is necessary to further check the transmission system, such as whether the pulleys, gears, bearings and other parts are worn or damaged, and replace the damaged parts.
By accurately diagnosing common faults of towable concrete pumps and adopting efficient emergency response strategies, problems can be quickly resolved when the equipment has problems, minimizing downtime, ensuring the smooth progress of construction progress, reducing economic losses caused by failures, and ensuring the smooth completion of construction projects.
