Pavement Trimming Tool With Segmented Cutting Heads
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Solution Overview
Problem
Conventional road milling machines are limited by their fixed cutting drum width, making them unable to effectively maneuver around obstacles like underground utility lines, manholes, and curbs, leading to increased costs and resource requirements for road resurfacing.
Innovation Solution
An apparatus and method featuring independently movable pavement degradation tools and a trimming tool, connected to a support assembly that can extend and retract, allowing for the degradation of a wider pavement area while avoiding obstacles, and providing a desired contour to the edge through perpendicular, lateral, or rotational movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed-width cylindrical cutting drum is used, then the machine structure is simple and easy to manufacture, but the machine cannot maneuver around obstacles and is limited to large pavement areas
Solution Approach 1:
The cutting drum is segmented into multiple independent cutting heads that can be individually positioned and controlled. Each cutting head can be independently raised, lowered, and laterally moved to navigate around obstacles such as manholes, utility lines, and curbs, while the overall system maintains a relatively simple base structure.
Solution Approach 2:
The cutting heads are made dynamically adjustable during operation. They can be raised and lowered independently via hydraulic or mechanical actuators, and their lateral positions can be adjusted to follow the contour of the pavement edge, enabling the machine to adapt to varying terrain and obstacle configurations in real-time.
2Productivity
If conventional road cutting machines are used, then the cutting width is fixed, but the machine cannot effectively degrade peripheral pavement areas and requires additional devices like jack hammers
Solution Approach 1:
The cutting heads are designed with multi-functionality to handle both conventional road cutting and peripheral area degradation. By adjusting the position and orientation of the cutting heads, the same device can effectively degrade various pavement geometries including flat surfaces, curved edges, and irregular peripheral areas, eliminating the need for separate jack hammer equipment.
3Productivity
If a fixed cutting drum width is used, then the machine is simple to operate, but it cannot degrade a wide swath of road surface and requires multiple passes
Solution Approach 1:
The cutting system is divided into multiple cutting heads arranged in a lateral array. Each cutting head can be independently positioned to optimize the cutting width and coverage area, allowing the machine to degrade a wide swath of pavement in a single pass while maintaining operational simplicity through centralized control.
4Manufacturing precision
If the cutting drum is dependent on the machine for direction of travel, then the machine structure is simple, but it cannot effectively contour the edge to a desired shape
Solution Approach 1:
The cutting heads are mounted on support assemblies that provide dynamic positioning capabilities in multiple degrees of freedom. The cutting heads can be laterally moved, vertically adjusted, and rotated to precisely follow the desired edge contour, enabling high-precision pavement edge shaping while maintaining a relatively simple overall machine structure.
Data Source
AI summary
An apparatus for degrading the periphery of a paved surface is disclosed in one aspect of the invention as including a support assembly, one or more pavement degradation tools coupled to the support assembly and adapted to degrade a paved surface, and a trimming tool coupled to the support assembly and adapted to degrade the edge created by the pavement degradation tools, thereby providing a desired contour to the edge. In selected embodiments, the trimming tool is adapted to straighten the edge created by the pavement degradation tools. The support assembly may be connected to a vehicle and adapted to laterally extend and retract the trimming tool with respect to the vehicle.