Road Surface Crushing Drum With Integrated Cutting Blades
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Solution Overview
Problem
Existing road surface crushing devices require separate operations for cutting and crushing, leading to increased time and cost due to the need for additional equipment and personnel, and result in irregular boundary surfaces that can cause construction defects.
Innovation Solution
A road surface crushing apparatus with a cylindrical drum featuring both crushing units protruding from its outer surface and cutting units extending from its ends, allowing simultaneous crushing of the road surface and cutting of the boundary surface between the repaired and unrepaired areas, utilizing disk-shaped cutting blades and flanges for accurate cutting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a separate cutting device and crushing device are used to perform cutting operation and crushing operation separately, then the boundary surface can be cut and road surface can be crushed, but repairing time is considerably increased and repairing cost is considerably increased due to additional equipment and personnel requirements
Solution Approach 1:
The patent combines the cutting device and crushing device into a single integrated apparatus. The cutting unit with cutting blades is positioned at the front end of the drum, while crushing bits are distributed around the drum circumference. Both functions operate simultaneously during a single pass, eliminating the need for separate operations and reducing repair time and costs.
Solution Approach 2:
The drum structure serves multiple functions: it supports both cutting blades for boundary surface cutting and crushing bits for road surface fragmentation. The rotating drum simultaneously performs cutting, crushing, and mixing operations, making the apparatus versatile and eliminating the need for multiple specialized devices.
2Manufacturing precision
If a separate cutting device and crushing device are used to perform cutting operation and crushing operation separately, then the boundary surface can be cut and road surface can be crushed, but equipment and personnel are additionally required which considerably increases repairing cost
Solution Approach 1:
The patent merges the cutting device and crushing device into a single integrated apparatus. The cutting unit with cutting blades is positioned at the front end of the drum, while crushing bits are distributed around the drum circumference. Both functions operate simultaneously during a single pass, eliminating the need for separate operations and reducing repair time and costs.
Solution Approach 2:
The drum structure serves multiple functions: it supports both cutting blades for boundary surface cutting and crushing bits for road surface fragmentation. The rotating drum simultaneously performs cutting, crushing, and mixing operations, making the apparatus versatile and eliminating the need for multiple specialized devices.
3Productivity
If only crushing bits on the drum body are used to crush the road surface, then the road surface can be crushed and removed, but the boundary surface becomes irregular which causes construction defects during ramming operation
Solution Approach 1:
The cutting blades perform preliminary cutting action on the boundary surface before the crushing bits operate. By pre-cutting the boundary to a regular shape, the subsequent crushing operation can proceed efficiently while maintaining boundary regularity, preventing construction defects during the ramming of repair materials.
Solution Approach 2:
The patent merges the cutting device and crushing device into a single integrated apparatus. The cutting unit with cutting blades is positioned at the front end of the drum, while crushing bits are distributed around the drum circumference. Both functions operate simultaneously during a single pass, eliminating the need for separate operations and reducing repair time and costs.
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
Enables efficient and cost-effective simultaneous operation of crushing and cutting, ensuring proper filling of repair materials and reducing the risk of construction defects, thereby shortening repair time and lowering costs.
Implementation Method 1
a plurality of crushing units each formed to protrude from one side of the outer circumferential surface of the drum in an outward direction, and configured to crush a road surface to be repaired
Implementation Method 2
one or more cutting units each formed to extend from one side of any one of both ends of the outer circumferential surface of the drum in a direction away from the outer circumferential surface of the drum, and configured to cut a boundary surface between the road surface to be repaired and a road surface not to be repaired
Data Source
AI summary
A road surface crushing apparatus includes: a cylinder-shaped drum configured to be rotatably installed on one side of a main transportation means; a plurality of crushing units each formed to protrude from one side of the outer circumferential surface of the drum in an outward direction, and configured to crush a road surface to be repaired; and one or more cutting units each formed to extend from one side of one of both ends of the outer circumferential surface of the drum in a direction away from the outer circumferential surface of the drum, and configured to cut a boundary surface between the road surface to be repaired and a road surface not to be repaired; wherein when the drum is rotated, both a crushing operation of the crushing units and a cutting operation of the cutting units are simultaneously performed.