In large-scale infrastructure projects like high-rise buildings, bridges, tunnels, and municipal engineering projects, concrete pump trucks, with their flexible concrete placing booms and efficient concrete delivery capabilities, have become essential equipment for ensuring project progress. The continued stability of concrete pump trucks depends on high-quality spare parts. Whether for routine preventative maintenance or emergency repairs, appropriate, high-quality spare parts can quickly restore equipment performance, reduce downtime, and minimize economic losses for construction companies. This series will comprehensively explain the core knowledge of concrete pump truck spare parts, covering common spare part classifications, scientific purchasing methods, professional maintenance techniques, and standardized replacement procedures. This series will help companies optimize spare parts management and ensure smooth project progress. In the previous article, we reviewed common types of concrete pump truck spare parts. This article will provide comprehensive tips for purchasing concrete pump truck spare parts to help companies better manage their concrete pump truck equipment.
Proper maintenance can effectively extend the service life of concrete pump truck spare parts, reduce the frequency of spare part replacement, and lower operating costs. The following are the key points of spare parts maintenance:
(I) Establish a spare parts inventory management system
Classified storage: Spare parts are categorized by “conveying system, hydraulic system, boom system, and electrical system.” Moisture-sensitive parts (such as electrical controllers and wiring harnesses) should be stored in a dry, ventilated, and temperature-controlled warehouse. Hydraulic components (such as hydraulic pumps and cylinders) should be coated with anti-rust oil and sealed, avoiding direct sunlight.
Dynamic inventory: Based on the frequency of use of spare parts (e.g., concrete pistons and eyeglass plates are high-frequency wear parts) and procurement cycles, a safety stock (e.g., 3-5 sets of wear parts) should be maintained. Spare parts inventory should be monitored in real time through the inventory management system to avoid inventory overstocking or shortages.
Regular inventory: Spare parts inventory should be checked monthly to check for signs of aging (e.g., rubber seals), corrosion (e.g., pins and bearings), and packaging damage. Expired parts should be removed and any shortages promptly replenished.
(II) Regular Inspection and Maintenance of In-Use Spare Parts
Regular Inspection of Wear Parts: Develop an inspection plan based on the pump truck’s operating volume (e.g., inspect the conveying system every 500 cubic meters of concrete). Focus on checking the wear of the concrete piston, the gap between the eyepiece plate and the cutting ring, and the aging of the hydraulic oil pipe. If excessive wear is found (e.g., the cutting ring gap exceeds 0.5mm), replace it promptly.
Hydraulic System Maintenance: Regularly check the hydraulic oil level and quality. Replace the hydraulic oil and hydraulic filter every 2000 hours of operation. After replacing hydraulic spare parts (e.g., hydraulic pumps and cylinders), bleed the hydraulic system to prevent cavitation damage to components.
Boom System Maintenance: Grease the boom pins and bearings weekly to reduce friction and wear. Check the boom wire rope tension and wire breakage monthly. If the number of broken wires exceeds the standard (e.g., ≥3 broken wires per strand), replace them immediately.
Electrical System Maintenance: Regularly clean the PLC. Remove dust from controllers and sensors, check wiring harness connectors for looseness and aging, and promptly apply moisture-proof treatment to electrical components (e.g., spray with insulating protective agent) after working in humid environments.
(III) Protective Measures for Idle Spare Parts
Sealed Storage: For idle hydraulic components (e.g., hydraulic cylinders and valves), seal the interfaces with plastic film to prevent the ingress of impurities. Rubber spare parts (e.g., seals and hydraulic oil pipes) should be protected from contact with oil, dirt, acids, and alkaline substances to prevent aging.
Regular Rotation: For metal spare parts (e.g., pins and conveyor cylinders), rotate them every three months to check the integrity of the anti-rust coating. If rust is present, reapply anti-rust oil promptly.
First-in, First-out: When retrieving spare parts, follow the “first-in, first-out” principle, prioritizing spare parts that were previously stored to prevent aging and failure due to long-term storage.
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Post time: Sep-05-2025