Pavement Sweeper Roller Brush Structure With U-Shaped Cable Fastening
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Solution Overview
Problem
Existing pavement sweeper brush mounting systems face challenges such as complex and hazardous cable insertion, high material costs, and structural weaknesses leading to breakage and vibrations due to high rotational speeds.
Innovation Solution
A modular brush structure comprising asymmetrical annular bodies with U-shaped sockets for cable fastening, reinforced with solid portions and breakage weakenings, and equipped with spacers for stability, using plastic materials to minimize stress and ensure secure attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If metal cable fastening clamps are used on the outside of the cable, then the cable fastening is effective, but the insertion becomes complicated and hazardous, and material costs increase
Solution Approach 1:
The cable is inserted through a guide opening into a receiving cavity where it is nested and secured by a retention clip. The retention clip engages with the cable within the cavity, providing secure fastening without requiring external clamps or complex insertion procedures through the drum body.
Solution Approach 2:
A retention clip acts as an intermediary component between the cable and the drum body. This clip provides the fastening function within the receiving cavity, eliminating the need for complex external clamps while maintaining effective cable securing.
2Strength
If metal bodies are used for cable fastening, then the fastening is strong, but material costs and manufacturing complexity increase
Solution Approach 1:
The invention changes the material parameter from metal to plastic for the drum body and fastening components. The plastic material provides sufficient mechanical strength for cable fastening while significantly reducing material costs and simplifying manufacturing processes compared to metal components.
Solution Approach 2:
The invention uses plastic as a composite material that combines structural integrity with cost-effectiveness. The plastic drum body integrates fastening features that provide metal-level strength at a fraction of the cost, eliminating the need for separate metal fastening components.
3Ease of operation
If a central joint is used to connect half-rings, then cable mounting is simplified, but structural weakness leads to breakage and vibrations at high rotational speeds
Solution Approach 1:
The drum is segmented into multiple receiving cavities within a single integrated body, eliminating the need for a central joint connecting half-rings. Each cavity is independently structured to support cables, distributing mechanical stresses throughout the drum body and preventing the structural weaknesses associated with central joints.
4Strength
If complex cable insertion through holes is required, then cable fastening is secure, but the operation becomes hazardous and time-consuming
Solution Approach 1:
The drum body is pre-formed with receiving cavities and guide openings during manufacturing. These features are built-in beforehand, allowing cables to be simply inserted and secured without complex manual manipulation or hazardous insertion procedures through drilled holes.
Solution Approach 2:
The receiving cavity structure provides self-guiding and self-retaining features. The guide opening directs the cable into the correct position, and the retention clip automatically secures the cable within the cavity, eliminating the need for complex external fastening operations.
Data Source
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AI summary
ROLLER BRUSH MOUNTING STRUCTURE FOR PAVEMENT SWEEPERS The present invention relates to a roller brush mounting structure for pavement sweepers. The invention is made up of a set of modules that surround or form a rotation axis of the brush, wherein each of the modules comprises: • An annular body (1) carrying a set of bristles (4) of the brush, with an outer surface and an inner surface; and • A cover (2) of the annular body that attaches to the inner surface of the annular body; and The annular body is provided with a set of sockets (111) carrying the bristles, having a U-shape with the ends thereof turned outwards, said sockets being arranged on the perimeter of said annular body. Each pair of bristles (4) is made up of a single cable portion, the central part of which is arranged in the U-shaped sockets, and the ends of which protrude from said sockets. The cover (2) comprises a fastening means for fastening the bristles (4) in the sockets (111).