Dump Truck Shield and Fender Airflow Management
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Solution Overview
Problem
The existing dump truck designs face issues with temperature rise on the platform due to heated engine air and dirt accumulation on the fenders, which affects performance and maintenance.
Innovation Solution
A dump truck configuration featuring a shield portion extending diagonally rearward from the platform, connected to the fenders at both ends, which directs heated air to the fenders to dry and drop dirt, while preventing temperature rise on the platform.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the engine cooling air is directed rearward without obstruction, then the engine cooling efficiency is improved, but the platform temperature increases making it unsuitable for device placement
Solution Approach 1:
The shield portion acts as an intermediary element between the engine cooling air flow and the platform. It redirects the hot air flow away from the platform while maintaining the cooling function, using the fenders as a mediator to guide the air flow along the vehicle sides rather than allowing direct upward movement onto the platform.
2Device complexity
If the fender surface is horizontal or has small inclination, then the fender structure is simple, but dirt containing moisture accumulates on the fender affecting performance and maintenance
Solution Approach 1:
The fender is designed with a specific inclination angle (10-45 degrees) that creates a curved surface profile. This curvature allows moisture-containing dirt to slide off the fender surface due to gravity and the inclined geometry, preventing accumulation while maintaining structural simplicity.
3Object-affected harmful factors
If the fender is positioned to block mud and water from the wheels, then wheel repelled debris is contained, but dirt containing moisture adheres and accumulates on the fender
Solution Approach 1:
The inclined fender surface with specific angle range creates a geometry where moisture-containing dirt cannot adhere effectively. The slope causes gravitational forces to dominate over adhesion forces, allowing dirt to slide off rather than accumulate, while still maintaining the debris blocking function.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration effectively reduces dirt accumulation on the fenders and suppresses platform temperature rise, improving performance and maintenance by guiding heated air to dry and remove dirt from the fenders.
Implementation Method 1
air that is heated by cooling the engine is prevented to rise up by the shield portion extending diagonally rearward from the platform
Implementation Method 2
The fenders can be warmed by the air and it is possible to dry the dirt containing moisture adhered to the fenders
Data Source
AI summary
A dump truck includes an engine provided in an engine compartment, and a pair of fenders provided at a rear side of the engine compartment and provided at a distance in the vehicle width direction. The dump truck includes the fender having a fender inclination plate extending so as to incline downward along a rear portion of each front wheel, and a shield portion having a shield inclination plate inclined downward while directing rearward between the pair of fenders and both ends of which in the vehicle width direction are connected to the respective fenders.