Formula Used:
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This calculation determines how many scrapers a single pusher can effectively service based on their respective cycle times. It helps optimize equipment utilization and operational efficiency in earthmoving operations.
The calculator uses the formula:
Where:
Explanation: The formula calculates the ratio between scraper cycle time and pusher cycle time to determine how many scrapers one pusher can efficiently service without causing delays.
Details: Proper calculation of pusher-scraper ratio is crucial for optimizing earthmoving operations, minimizing equipment idle time, and maximizing productivity on construction and mining sites.
Tips: Enter accurate cycle times for both scraper and pusher in seconds. Ensure times are measured under similar operating conditions for accurate results.
Q1: What is included in scraper cycle time?
A: Scraper cycle time includes loading time, travel time to dump site, dumping time, and return time to loading area.
Q2: What constitutes pusher cycle time?
A: Pusher cycle time consists of maneuver time to position behind scraper and actual loading assistance time.
Q3: What is an ideal N_p value?
A: Typically, values between 2-4 are optimal, but this depends on specific site conditions and equipment capabilities.
Q4: How does this affect operational efficiency?
A: Proper ratio calculation ensures pushers are neither underutilized nor overwhelmed, maximizing overall equipment productivity.
Q5: Should other factors be considered?
A: Yes, factors like site layout, material characteristics, and operator skill should also be considered for comprehensive operational planning.