Determining whether the Pump Truck Piston needs to be replaced is a process based on observation and evaluation from many aspects. The following are some detailed judgment basis, each point will be explained with relevant figures and information:
1. Changes in strength and speed of pumping concrete
Description: As the core component of pumping concrete, the performance of Pump Truck Piston directly affects the pumping intensity and speed. When you notice a noticeable lack of force or a noticeable slowdown in pumping, this is often the first sign of piston wear or damage. As a rule of thumb, if the pumping efficiency drops significantly, such as being able to pump a certain amount of concrete in a specific time but now taking longer, then you need to consider checking the condition of the piston.
Numbers and Information: While exact numbers will vary depending on pump truck model and concrete characteristics, generally speaking, if pumping efficiency drops by more than 10%, it is cause for concern.
2. Generation of abnormal noise
Description: When the Pump Truck Piston is damaged, abnormal noises may be produced, such as metal friction or foreign object impact. These sounds are usually louder and harsher than normal pumping and require careful identification by the operator. The occurrence of abnormal noise often means that the piston or its related parts (such as seals, bearings, etc.) have been worn or damaged.
Numbers and information: The loudness and frequency of abnormal noise are important basis for judging the status of the piston. If the abnormal sound persists and the sound gradually increases, the urgency of replacing the piston will be higher.
3. Pumping stability decreases
Description: Damage to the Pump Truck Piston may also lead to a decrease in the stability of pumped concrete, manifested as poor pumping, pumping interruptions or large pressure fluctuations. These unstable factors not only affect construction efficiency, but may also cause further damage to the pump truck itself.
Numbers and information: If there are frequent interruptions in the pumping process or if the pressure fluctuations exceed the normal range (such as ±10% of the set value), then a complete inspection of the piston and its related systems is required.
4. Direct observation of piston wear degree
Description: When conditions permit, the wear degree of the piston can be directly observed. This usually needs to be done in a shutdown state and with the help of professional inspection tools and equipment. By observing the wear marks, cracks or deformation on the piston surface, you can initially judge whether it needs to be replaced.
Numbers and Information: While there is no specific numerical standard that defines what level of wear requires piston replacement, generally speaking, if the wear depth exceeds 1% of the piston diameter (assuming a 200mm piston diameter, the wear depth exceeds 2mm), or If there are obvious cracks and deformations, you need to consider replacing the piston with a new one.
5. Lubrication and maintenance conditions
Description: The lubrication and maintenance status of the Pump Truck Piston is also an important factor in determining whether it needs to be replaced. If you don't pay attention to lubrication and maintenance, or the lubricating oil used is of poor quality, the piston will wear faster. On the contrary, if regular lubrication and maintenance are performed, the service life of the piston can be effectively extended.
Numbers and information: According to the recommendations of the pump truck manufacturer, the piston usually needs to be lubricated and maintained after working for a certain number of hours (such as 500 hours) or after pumping a certain amount of concrete (such as 5000-10000 cubic meters). If these tasks are not carried out on time, special attention needs to be paid to the condition of the piston.
6. Consider other factors
Description: In addition to the above points, other factors need to be considered to determine whether the Pump Truck Piston needs to be replaced. For example, the type and nature of pumped concrete, the working environment and conditions of the pump truck, etc. may have an impact on the wear and damage of the piston.
Numbers and information: These factors are usually difficult to measure with specific numerical values, but they can be judged indirectly by observing and analyzing various phenomena during the pumping process. For example, if you are pumping high-viscosity or highly abrasive concrete, the piston will wear faster; if the pump truck works in a harsh working environment (such as high temperature, high humidity, dust, etc.) for a long time, It will also adversely affect the service life of the piston.
To sum up, determining whether the Pump Truck Piston needs to be replaced is a process that takes multiple factors into consideration. In actual operations, we should make flexible judgments based on specific situations and take corresponding measures in a timely manner to ensure the normal operation and construction efficiency of the pump truck.
