Multi-Saw Demolishing Vehicle for Rapid Concrete Pavement Removal
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Solution Overview
Problem
Current methods for repairing damaged cement concrete pavements in airport and port terminals are inefficient, requiring excessive time and resources due to the labor-intensive process of demolishing and replacing slabs, which hampers quick navigation and traffic restoration.
Innovation Solution
A device and method utilizing a demolishing vehicle equipped with multiple saws and a controlled cutting system that sequentially cuts the pavement in a shallow-to-deep manner, allowing for faster and safer removal of cement concrete slabs, enhancing cutting speed and reducing safety hazards associated with single saw blade operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional sledgehammer demolition method is used, then the pavement can be demolished, but the demolition efficiency is low and requires excessive manpower and resources to collect broken pieces
Solution Approach 1:
The pavement slab is segmented into manageable sections through controlled cutting by multiple saws (first saws, second saws, and third saws) that cut along predetermined paths. This segmentation enables systematic removal of concrete sections while minimizing waste and facilitating efficient debris collection, directly addressing the low productivity and time loss issues of conventional hammering methods
Solution Approach 2:
The manual sledgehammer mechanical system is replaced with an automated vehicle-mounted cutting system equipped with multiple saws mounted on movable platforms. This substitution transforms the demolition process from labor-intensive manual hammering to an automated cutting operation, significantly improving demolition efficiency and reducing the time required for pavement repair
2Device complexity
If single saw blade is used for cutting, then the device structure is simple, but safety hazards increase and cutting efficiency is limited
Solution Approach 1:
The cutting system is segmented into multiple saw units (first saws, second saws, third saws) that operate independently on movable platforms. This segmentation distributes the cutting workload across multiple blades, reducing the operational burden on any single saw and minimizing safety hazards associated with overloaded single-blade operations while maintaining manageable device complexity
Solution Approach 2:
The system employs multiple saws that cut partially through the concrete slab in sequence rather than relying on a single saw to complete the entire cut. This partial action approach reduces the stress and safety risks on each individual saw blade while collectively achieving complete pavement section removal, balancing device complexity with operational safety
3Quantity of substance
If deep cutting is performed in a single operation, then the cutting volume is large, but the cutting speed decreases and safety risks increase
Solution Approach 1:
The total cutting volume is segmented into multiple cutting stages performed by different saw groups. The first saws perform initial cuts, followed by second saws and third saws that complete the penetration. This segmentation reduces the cutting depth required from any single saw, enabling faster cutting speeds while collectively removing the complete pavement section volume
Solution Approach 2:
The first saws perform preliminary cutting operations to create initial grooves and reduce the remaining concrete thickness before the second and third saws complete the deep penetration cuts. This preliminary action reduces the workload for subsequent deep cutting operations, maintaining high cutting speeds throughout the process while achieving complete section removal
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 solution significantly accelerates the pavement replacement process, improving the efficiency of road repair and ensuring quick navigation and traffic restoration by minimizing cutting volume and operational risks, while enhancing safety and reducing labor intensity.
Implementation Method 1
a working end of the first telescoping rod is provided with a first saw, and a top of each of the first boxes is provided with a first moving component... a working end of the second telescoping rod is provided with a second saw... a working end of the third telescoping rod is provided with a third saw
Implementation Method 2
A cooling component is disposed at the bottom of the base, the cooling component is configured to cool the first saw, the second saw, and the third saw
Data Source
AI summary
A method for rapid demolishing of a cement concrete pavement slab and a device there for. The device includes a demolishing vehicle, and the demolishing vehicle includes a base disposed at a bottom of the demolishing vehicle. The first shallow cutting allows first saws to make a minimal cut into the cement concrete pavement, increasing the cutting speed. A second deeper cutting is made on the basis of the grooves cut by the first saws, and although second saws have a larger feed, a cutting thickness of the cement concrete pavement is reduced by the first saws. A third cutting follows the same principle as the previous cuttings.