Compact Side Brush Assembly for Wider Cleaning Paths
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Solution Overview
Problem
Existing side brush assemblies for floor surface maintenance machines are often complex, costly, and have a large footprint, making them difficult to package and adapt for use on different-sized vehicles, limiting their versatility and efficiency.
Innovation Solution
A compact side brush assembly featuring a brush deck, parallel linkage assembly, swing arm, and actuator assembly that allows for pivoting and extension/retraction, enabling efficient operation and storage with a reduced footprint, utilizing a linear actuator and slip link to transition between operational and transport modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a traditional side brush assembly with extension/retraction mechanism is used, then the cleaning path is widened and productivity is improved, but the device complexity and footprint increase
Solution Approach 1:
The side brush assembly is divided into modular components: a swing arm mechanism for lateral movement, a lift mechanism for vertical adjustment, and a brush deck. This segmentation allows each component to perform its function independently, simplifying the overall design while maintaining the ability to extend the cleaning path.
Solution Approach 2:
The side brush assembly incorporates dynamic movement capabilities through the swing arm that allows lateral extension and retraction, and the lift mechanism that enables vertical adjustment. This dynamic design allows the assembly to adapt its position based on operational requirements, widening the cleaning path when needed while reducing complexity by using controlled motion rather than fixed complex structures.
2Productivity
If a traditional side brush assembly with large footprint is used, then the cleaning path is widened, but the packaging and adaptability to different vehicle sizes become difficult
Solution Approach 1:
The swing arm mechanism enables the side brush assembly to dynamically adjust its lateral position, extending outward during cleaning operations to maximize cleaning path width, and retracting toward the vehicle body during transport or when not in use. This dynamic reconfiguration allows the same assembly to be adapted to different vehicle sizes without requiring permanent space allocation.
Solution Approach 2:
The standardized mounting interface and adjustable geometry of the swing arm assembly allow it to be universally mounted on different vehicle platforms. The ability to adjust the swing arm's pivot point and brush deck position enables the same assembly design to accommodate various vehicle sizes, enhancing versatility while maintaining effective cleaning path extension.
3Productivity
If a side brush assembly with multiple parts is used, then the cleaning functionality is improved, but the manufacturing cost increases
Solution Approach 1:
The assembly is segmented into standardized components (swing arm, brush deck, lift mechanism, mounting brackets) that can be manufactured independently using common fabrication processes. This segmentation allows for economies of scale in component production and simplifies quality control, reducing overall manufacturing cost while maintaining cleaning efficiency.
Solution Approach 2:
The swing arm and lift mechanism are integrated into a coordinated system where a single actuator controls both lateral extension and vertical lifting motions. This merging of functions reduces the number of separate actuators and control systems needed, simplifying the overall assembly and reducing manufacturing costs while preserving full cleaning functionality.
Data Source
Figure 1A
Figure 1B
Figure 2A
AI summary
A surface maintenance vehicle with a compact side brush assembly. The side brush assembly includes a brush deck, a parallel linkage assembly, a swing arm, and an actuator assembly. The brush deck carries a floor-engaging brush. The parallel linkage assembly permits pivoting of the brush deck about a lift axis to raise and lower the brush deck. The swing arm is adapted to rotates to swing the brush deck towards and away from the floor surface maintenance machine. The actuator assembly includes a linear actuator and a slip link.