Now, in our ongoing construction project, the concrete pump has been integrated into our work. Although a concrete pump is not an inexpensive machine, it's inevitable that parts will wear out over time. Today, Intel Machinery would like to share some practical tips on how to extend the service life of your concrete pump.
First, when connecting the transfer pipes, always start from the pump outlet and connect them in sequence from front to back. Never connect the first two pipes first and then the middle one, as this can create internal stress between the pipes, leading to joint failure or pipe breakage. Once connected, make sure the pump’s outlet, bend pipes, and straight sections are securely fastened to prevent movement and damage. The pressure inside the pipe is highest near the pump, so it's recommended to use thick-walled new pipes at the pump end and thinner, older pipes further away. This helps increase the pipeline’s lifespan and reduces the risk of blockages.
Regarding the elbow joints, the area farther from the pump tends to wear more quickly. To prolong their life, it’s advisable to rotate the elbows periodically.
Next, the cutting ring and the eye plate require regular maintenance. These two components move relative to each other, and both have wear-resistant coatings. The gap between them should be adjusted to 0.1–0.2 mm using the S-shaped tube’s spline nut. A rubber spring is installed between the S-tube and the cutting ring to allow flexibility. Over time, the rubber spring may lose elasticity, and the contact surfaces may wear, increasing the gap. When the gap exceeds 0.7 mm, it must be adjusted immediately to prevent mortar from entering the friction area. If mortar gets in, it significantly increases the wear rate of both the cutting ring and the eye plate.
The cutting ring typically wears first at the edges and at two symmetrical points 90 degrees up. Rotating the cutting ring after wear can effectively double its life. As for the eye plate, the middle part of the bridge is the most vulnerable. The larger the gap, the faster the wear. Always monitor the gap and adjust or replace worn parts promptly. If the rubber spring loses its elasticity, it should be replaced immediately.
For repairing the cutting ring and eye plate, D507 welding rods can be used after welding.
When it comes to the discharge port, tapered pipe, and distribution valve—these parts are also prone to wear. If the wear layer is damaged, it’s important to apply surfacing with D507 electrodes to extend their usability. The lifespan of these parts varies depending on site conditions such as concrete quality, pumping distance, and height. However, proper usage and maintenance can greatly enhance their longevity.
Piston and conveying cylinder lubrication is another key factor. Pistons are usually made of polyurethane, which is flexible but still subject to wear. The conveying cylinder is coated with wear-resistant material. There are two types of lubrication: automatic and manual. For automatic systems, regularly check if the oil flows smoothly; any blockage can cause severe wear. For manual systems, operators should add lubricant based on working conditions. When refueling, ensure the piston is at the bottom and oil is added directly to the piston tank. During operation, the “hold cylinder†technique is often used—pressing the jog button for 5–8 seconds once the piston reaches the end to refill the hydraulic reservoir. This ensures full stroke usage and prevents localized wear.
Also, keep an eye on the water in the cooling tank. If the water becomes cloudy or contains sand, it may indicate piston wear, and the piston should be replaced promptly. If the water turns cloudy quickly after replacing the piston, it suggests the conveying cylinder is worn and needs replacement. If possible, measure the cylinder diameter to determine if it’s worn—when the inner diameter increases by 0.45–0.55 mm, the cylinder should be replaced.
Finally, the temperature of the cooling water is crucial. High temperatures can accelerate piston wear, so regular water changes are necessary.
By following these maintenance tips, you can significantly extend the life of your concrete pump. Intel Machinery’s concrete pumps are built to last, offering reliable performance and long-term value. With proper care, your equipment will serve you well for many years.
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