Rotating Removal Unit with Impact Discs and Cutting Bases
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Solution Overview
Problem
Existing devices for removing building materials, particularly reinforced concrete, face challenges in efficiently separating and removing both ductile components like reinforcing steel and brittle components like concrete, as they lack tools adapted to the specific mechanical properties of each material.
Innovation Solution
The device incorporates a removal unit with groups of impact disks for brittle components and cutting bases for ductile components, where the cutting bases are positioned between impact disk groups, allowing for targeted removal by utilizing the specific mechanical properties of each component, with the cutting bases engaging after the impact disks have removed the brittle material.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If only impact discs are used to remove building material, then brittle components can be removed, but ductile components cannot be effectively machined
Solution Approach 1:
The removal unit is segmented into distinct functional zones: impact disc groups for brittle material removal and cutting bases for ductile material machining. This segmentation allows each component to be optimized for its specific function, enabling the device to efficiently handle both brittle and ductile components of reinforced concrete without compromising performance on either material type.
2Productivity
If cutting bases are positioned to engage ductile components, then ductile material can be machined, but the cutting bases may be damaged by impact discs
Solution Approach 1:
The impact disc groups are positioned to act on the building material first, removing the brittle component (concrete) and exposing the ductile component (rebar). This preliminary action prepares the material by eliminating the protective concrete cover, allowing the cutting bases to subsequently engage only with the ductile rebar elements, thereby preventing damage to the cutting bases from direct impact with concrete while enabling effective machining of the steel reinforcement.
3Adaptability or versatility
If multiple tool types are integrated in one device, then both brittle and ductile components can be removed, but device complexity increases
Solution Approach 1:
The device merges impact disc groups and cutting bases into a single integrated removal unit that rotates about a common axis. The impact disc groups and cutting bases are arranged alternately in the circumferential direction on the same rotational structure, allowing both brittle and ductile material removal functions to be combined in one device. This merging approach achieves multi-material capability while maintaining a relatively compact and unified structural design.
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
This configuration enables efficient removal of both brittle and ductile components, minimizing damage to the cutting bases and ensuring effective machining of the ductile components, resulting in a more efficient and precise removal process.
Implementation Method 1
groups of impact discs (9) as removal tools for removing at least one brittle component (31) of a building material (32)
Implementation Method 2
cutting bases (10) for removing at least one ductile component (33) of a building material (32)
Data Source
Figure 1
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AI summary
An apparatus for removing construction material has a removal unit (8) that is rotatable about a longitudinal centre axis and, in order to remove at least one brittle component of a construction material, has groups of beater discs (9). The beater discs (9) of each group are attached to a disc bearing spindle (15) with play in the radial direction, wherein the disc bearing spindles (15) are arranged at a radial spacing from a longitudinal centre axis of the removal unit (8). Arranged between circumferentially adjacent groups of beater discs (9) is at least one cutting base (10) that is set up to remove at least one ductile component of a construction material by cutting with at least one cutting plate (11). As a result, there is a respective removal tool for removing construction material with components having different mechanical properties , said removal tool being adapted to the different mechanical properties of the components and therefore creating efficient removal of the construction material.