Compact Sawcut Machine for Sidewalks Using Segmented Design
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Solution Overview
Problem
Existing sawcut machines are inefficient and labor-intensive for forming sawcuts in sidewalk concrete, as they require manual operation, generate dust that needs to be managed, and are not suitable for newly poured concrete due to weight and size constraints, causing damage and requiring additional ground grading.
Innovation Solution
A lightweight sawcut machine with rubber tracks and self-propelled hydrostatic drives, equipped with an automatic cutting system and vacuum dust collection, allowing for precise, efficient, and damage-free sawcuts without the need for manual labor, featuring a compact design to navigate narrow sidewalks and avoid obstructions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a traditional road saw is used to cut sidewalk concrete, then the cutting function is achieved, but the machine is too heavy and large, causing damage to the concrete and requiring additional ground grading
Solution Approach 1:
The machine is divided into separate functional modules: a hydrostatic drive system with rubber tracks for mobility, a lightweight frame structure, and a detachable saw assembly. This segmentation allows the cutting function to be performed while keeping the overall machine weight low enough to travel on newly poured concrete without causing damage or requiring additional ground grading.
2Ease of operation
If manual saw operation is used, then the sawcutting function is achieved, but labor costs are high and the process is inefficient
Solution Approach 1:
The machine incorporates self-propelled hydrostatic drives with rubber tracks that automatically propel the device along the sidewalk, eliminating the need for manual pushing or towing. The automated propulsion system reduces labor requirements while maintaining ease of operation and significantly improving cutting efficiency.
3Manufacturing precision
If sawcutting is performed on newly poured concrete, then the sawcuts are formed at the optimal time, but dust is generated that requires vacuum collection or water suppression
Solution Approach 1:
The patent introduces a vacuum system as an intermediary component that collects dust at the source during sawcutting operations. The vacuum assembly is positioned to capture dust particles generated by the blade, preventing them from dispersing into the environment while allowing the sawcutting process to proceed at the optimal time for concrete strength development.
4Adaptability or versatility
If a compact machine design is used, then navigation around obstructions is improved, but the cutting power may be reduced
Solution Approach 1:
The machine employs a hydrostatic drive system using hydraulic fluid to transmit power to the rubber tracks, providing high torque and cutting power in a compact package. This hydraulic power transmission enables the machine to maintain sufficient cutting capability while keeping the overall size small enough to navigate around obstructions like fire hydrants and utility poles.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The machine significantly reduces labor costs and improves efficiency by automating the sawcutting process, minimizing damage to concrete surfaces, and eliminating the need for additional ground grading, while ensuring smooth operation on newly poured concrete and easy navigation around obstructions.
Implementation Method 1
self-propelled hydrostatic drives
Implementation Method 2
vacuum dust collection
Data Source
AI summary
Disclosed is a machine for forming saw cuts into sidewalk concrete slabs, the machine comprising a frame, rubber tracks attached to the underside of the frame to self-propel the machine in a travel direction along a sidewalk during use, and a cutting assembly mounted to the frame. The cutting assembly comprises a saw for forming saw cuts, a linear actuator for moving the saw at a depth into the sidewalk, and a screw drive motor to move the saw to form the saw cut in a direction perpendicular to the travel direction. While road repair machinery has the luxury of more space, machines for sidewalks are smaller and tighter. The machine in accordance with the teachings of this invention uses a newly designed cutting assembly to keep the size of the machine useable for sawcuts in sidewalks.