Welche Umgebungsbedingungen liegen beim Endanwender vor und welche Herausforderungen ergaben sich daraus?

The atmosphere is heavily dust-laden, as continuous coal stacking, reclaiming, and conveyor movement generate fine coal particles. This dust remains suspended in the air and settles on mechanical and electrical components, leading to abrasion, insulation deterioration, and increased wear of moving parts. Also, the environment can be characterized by moisture and humidity variations, especially during monsoon or coal washing operations. For installing the igus e-spool system on our EOT crane where the Grab Bucket Vertical movement operation (Span – 14 Meters), the key challenges are as follows: 1. The crane operates in a coal-dust–laden atmosphere. 2. Grab cranes work continuously with frequent start-stop operations. The e-spool must withstand high cycle rates without excessive wear or overheating cables. 3. During grabbing and lifting, sudden load changes and vibration occur. These shock loads can impact cable tension and mounting stability of the e-spool system. 4. Maintaining constant E-Chain tension and proper synchronization over the full 14-meter hoisting stroke is critical to avoid slack, misalignment, or uneven winding. 5. Limited space on the trolley near the hoist drum requires careful structural design to ensure proper installation without interfering with crane operations. 6. The electro-hydraulic grab requires stable power supply. Cable selection must ensure flexibility, abrasion resistance, and minimal voltage drop. In summary, the main challenges involve high duty cycles, proper tension control over 14 m travel, and ensuring reliable power transmission within limited installation space. Proper engineering design and component selection was essential for successful implementation.

Welche Anforderungen mussten die Energieketten und Leitungen erfüllen?

• Platzsparend
• Schnelle Montage
• Lange Lebensdauer
• Montagezeit reduzieren
• Wartungsintervalle verlängern
• Kostenreduzierung

Wie konnten Sie mit igus® Produkten die Effizienz Ihrer Anwendung steigern bzw. Kosten senken?

Using an igus e-spool system in place of tying the composite cable with a chain significantly improves both efficiency and operating cost in this grab crane application. Increase in Efficiency: The e-spool ensures controlled and guided winding/unwinding of the cable through the e-chain during the 14 m hoisting travel. This eliminates random bending, twisting, and jerking of the cable. As a result: 1. Smooth and uninterrupted grab operation 2. Reduced risk of sudden cable snapping 3. Improved reliability of electro-hydraulic grab control 4. Less unplanned downtime in coal feeding Since coal handling directly affects boiler feeding, improved reliability ensures steady power plant operation. Reduction in Operating Cost: Previously, tying the cable with a chain caused: 1. Abrasion and crushing of the expensive composite cable 2. Frequent cable failures 3. Repeated purchase of high-cost power + control composite cables 4. Production loss due to crane stoppage With e-spool: 1. Proper bending radius is maintained 2. Mechanical stress on cable is minimized 3. Cable life increased 4. Maintenance frequency reduces 5. Downtime losses are minimized 6. With e-spool we are using Single core cables for the Power. Also, Power & Control cables are separated now. Hence, in case of any cable damage in future we do not have to buy a full composite cable. Instead, we can change a single core run power cable or control cable only. That will also help us to reduce the cost further. In short, the e-spool increases system reliability, extends cable life, reduces maintenance and replacement cost, and prevents costly operational interruptions in the power plant.