Traversing Front Arm for Waterjet Truck Maneuverability
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Solution Overview
Problem
Existing high-pressure water cleaning systems for surfaces like highways and runways face limitations in maneuverability and path flexibility due to fixed arm configurations, which restrict the ability to efficiently clean surfaces beyond the truck's front bumper and require more linkages and actuators for complex movements.
Innovation Solution
The arm assembly features a traversing mount bracket for linear translation and multiple joints with actuators that allow for both linear and rotational movements, enabling the platform to move in various directions with fewer components, and includes a vacuum system for debris recovery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a fixed arm configuration is used, then the structure is simpler, but the maneuverability and path flexibility are restricted
Solution Approach 1:
The arm configuration transitions from a fixed structure to a dynamic one with multiple degrees of freedom. The first joint enables rotational movement in a first plane, while the second joint provides rotational movement in a second plane perpendicular to the first. This dynamic configuration allows the platform to reach positions and orientations that are inaccessible to fixed arm structures, directly improving maneuverability without requiring excessive linkages.
2Adaptability or versatility
If more linkages and actuators are added to increase path flexibility, then the cleaning coverage improves, but the device complexity increases
Solution Approach 1:
The arm assembly utilizes two perpendicular planes of rotation to achieve three-dimensional positioning capability. The first joint rotates in a first plane, and the second joint rotates in a second plane perpendicular to the first plane. This dimensional approach allows the platform to access a broader range of positions and orientations using only two joints, rather than requiring multiple linkages arranged in a single plane, thus improving path flexibility while keeping the actuator count low.
3Productivity
If the platform is mounted to reach beyond the truck's front bumper, then the cleaning efficiency improves, but the arm structure becomes more complex
Solution Approach 1:
The dynamic arm configuration with two perpendicular rotational joints enables the platform to extend beyond the truck's front bumper while maintaining structural simplicity. The first joint provides rotation in a first plane, and the second joint provides rotation in a perpendicular second plane, allowing the platform to reach forward and cover areas that would otherwise require a more complex extended linkage system. This improves cleaning efficiency by accessing previously unreachable surfaces.
Data Source
AI summary
An arm assembly for a waterjet truck according to an exemplary aspect of the present disclosure includes a traversing mount bracket at a first end of the arm. The traversing mount bracket is configured to permit the arm to translate in a linear direction. The arm further includes a joint configured to permit rotational movement.