Adjustable Spray Arm Car Wash for Mixed Vehicle Heights
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Solution Overview
Problem
Conventional car wash systems are inefficient for vehicles of varying heights, leading to improper cleaning or potential damage, and require significant labor or time for individual washing.
Innovation Solution
A multi-car automated washing system with a spray arm capable of two-dimensional and vertical movement, equipped with proximity sensors and a control interface for adjusting to vehicle contours, allowing for automated detergent dispensing, rinsing, and drying across different vehicle types.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If a fixed-height automated car wash system is used, then the cleaning process is automated and efficient, but vehicles of varying heights cannot be properly cleaned or may be damaged
Solution Approach 1:
The spray arm is made dynamically adjustable in height through the incorporation of a linear actuator that connects the spray arm to the support frame. This actuator enables the spray arm to move vertically between an upper height and a lower height, allowing the system to adapt to different vehicle heights while maintaining automated operation. The dynamic adjustment resolves the contradiction by making the previously fixed structure flexible and responsive to varying vehicle dimensions.
2Adaptability or versatility
If conventional manual car washing is used, then vehicles of any height can be cleaned, but significant labor and time are required
Solution Approach 1:
The system incorporates sensors that automatically detect the presence and height of vehicles, and the linear actuator automatically adjusts the spray arm height in response to sensor input. This self-adjusting capability eliminates the need for manual intervention to accommodate different vehicle heights, providing automated service that is both adaptable and time-efficient.
3Adaptability or versatility
If the spray arm height is fixed at an upper position, then taller vehicles can be cleaned, but shorter vehicles may not be washed effectively
Solution Approach 1:
The system changes the positional parameter of the spray arm by using the linear actuator to adjust its vertical position. Based on sensor detection of vehicle height, the actuator moves the spray arm to the appropriate height, ensuring optimal cleaning effectiveness for each vehicle type. This dynamic parameter adjustment resolves the contradiction between accommodating different vehicle sizes and maintaining cleaning precision.
Data Source
AI summary
A system for automated vehicle washing uses a spray arm having horizontal and vertical arm portions joined orthogonally to each other. The spray arm performs various cleaning operations including detergent dispensing, water rinsing and air drying, and is in fluid connection to respective reservoirs and dispensers of detergent, water, and compressed air. A support frame is configured for movement of the spray arm thereon. Means are included for two-dimensional horizontal movement, rotational movement, and vertical movement of the spray arm. A controller of the system is configured to raise or lower the spray arm between an upper height and lower height to accommodate a variety of vehicle types and sizes. A control interface may be in the form of a mobile application and operated by a touchscreen device. The spray arm may include ultrasonic proximity sensors mounted thereon for automated operation.