Electric Drive Dump Truck Trolley Power Collection Control
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Solution Overview
Problem
Electric drive dump trucks face high fuel consumption when stopping or starting in trolley travel sections due to their heavier weight, and manually operating power collection units requires skill and experience.
Innovation Solution
An electric drive dump truck equipped with a position detection device, vehicle speed detection device, and control device that automatically determines the appropriate timing for moving up power collection units based on position and speed to align with trolley lines, reducing the need for driver expertise and minimizing fuel consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the driver temporarily stops or decelerates the electric drive dump truck to manually operate the power collection units, then the power collection units can be moved up and down, but the fuel consumption increases due to the heavy vehicle weight
Solution Approach 1:
The control device determines the appropriate timing to move up the power collection units in advance based on the detected position and vehicle speed, before the vehicle actually enters the trolley travel section. This preliminary action allows the power collection units to be ready for contact with the trolley lines without requiring the driver to stop or decelerate the vehicle, thereby reducing fuel consumption while ensuring proper operation.
2Use of energy by moving object
If the driver moves up the power collection units while traveling at appropriate timing, then the fuel consumption is reduced, but the operation requires experience and skill to judge the correct timing
Solution Approach 1:
The control device automatically determines the appropriate timing for moving up the power collection units by itself, using the detected position and vehicle speed information. The system serves itself by making the timing decision without relying on the driver's experience or skill, thereby reducing fuel consumption while eliminating the need for specialized driver knowledge.
Solution Approach 2:
The control device continuously receives feedback from the position detection device and vehicle speed detection device, using this real-time information to determine the optimal timing for moving up the power collection units. This feedback mechanism enables the system to automatically adjust the operation timing based on actual vehicle conditions, reducing both fuel consumption and the need for driver expertise.
3Reliability
If manual operation of power collection units is required at appropriate timing, then the contact with trolley lines can be ensured, but the operational complexity increases
Solution Approach 1:
The control device automatically determines the appropriate timing for moving up the power collection units based on detected position and vehicle speed, eliminating the need for complex manual judgment by the driver. This self-service approach ensures reliable contact with the trolley lines while significantly reducing operational complexity.
Data Source
AI summary
An electric drive dump truck travels by contacting, with trolley lines, power collection units configured to be moved up and down by lifting devices and receiving electrical power from the trolley lines. A position detection device is configured to detect a position of the electric drive dump truck; a vehicle speed detection device is configured to detect a vehicle speed of the electric drive dump truck; and a storage section is configured to store a position of the trolley lines and a time (hereinafter referred to as a moving-up time) until the power collection units contact with the trolley lines since the power collection units start moving up. A control device is configured to output a signal indicating that the power collection units can be moved up based on the position and vehicle speed of the electric drive dump truck, the position of the trolley lines, and the moving-up time.