Stub Axle Grinding Attachment for Obstacle Proximity
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Solution Overview
Problem
Existing highway grinding machines are unable to grind close to obstructions such as kerbs and poles due to their centrally mounted straddle-type grinding head, necessitating secondary processes that often result in inconsistent results and inefficiencies.
Innovation Solution
A grinding attachment with a stub axle arrangement that allows the grinding drum to operate proximal to obstacles, bolted directly to a highway grinding machine, utilizing an existing main shaft for torque and featuring a retaining ring and clamping ring to secure blades and spacers, enabling closer grinding to adjacent surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a straddle-type grinding head is centrally mounted to support a heavy-duty grinding drum, then the grinding machine can maintain structural stability and support heavy grinding loads, but the machine cannot grind close to obstructions such as kerbs, poles, and barriers
Solution Approach 1:
The grinding drum is divided into two separate support configurations: a head shaft supporting one end and a stub axle supporting the other end. This segmentation allows the grinding drum to be positioned closer to obstructions while maintaining structural integrity through distributed support points.
Solution Approach 2:
The invention transitions from a centrally mounted straddle configuration to an end-mounted configuration where the grinding drum is supported at its ends by the head shaft and stub axle. This dimensional repositioning enables the grinding drum to operate proximal to obstacles without compromising support stability.
2Productivity
If existing highway grinding machines are used, then the grinding operation can be performed, but secondary processes are required when immovable obstacles are encountered, resulting in inconsistent results and inefficiency
Solution Approach 1:
The grinding attachment with stub axle configuration provides universal applicability across different grinding scenarios, including proximity to obstacles. This single configuration eliminates the need for secondary milling processes while maintaining consistent texture and grade uniformity throughout the grinding surface.
3Ease of operation
If a stub axle arrangement is used to support the grinding drum at one end, then the grinding machine can operate proximal to obstacles, but the structural support requirements become more complex
Solution Approach 1:
The stub axle serves as an intermediary component between the grinding drum and the mounting assembly. This intermediary element enables the grinding drum to be positioned closer to obstacles while distributing the structural support requirements across the mounting assembly and vehicle frame.
Data Source
AI summary
A grinding attachment for highways and similar surfaces is disclosed for grinding operations closer to adjacent obstacles than is possible with existing equipment using a straddle-type centrally mounted grinding drum. The grinding attachment assembly comprises at one end a stub axle, which engages the grinding drum via a head extension. The stub axle is attached to a shroud which is in turn supported by a mounting assembly, which in operation attaches to a vehicle or machine able to drive the grinding attachment. The grinding drum can thereby operate proximal obstacles adjacent a grinding surface by virtue of arrangement of the stub axle, shroud and mounting assembly.