Rotatable Drive Unit and Percussion Mechanism for Uneven Surface Cutting
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Solution Overview
Problem
Existing devices for removing floor coverings struggle to maintain full contact of the separating knife with the surface when driving over bumps, due to unevenness and debris accumulation under the drive wheels.
Innovation Solution
A device with a rotatable drive unit and percussion mechanism connected via an articulated joint, allowing for relative rotation around a parallel axis, ensuring the separating knife remains in full contact with the ground over uneven surfaces, and featuring a roller bearing and joint system for stability and limited rotation to prevent tipping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the drive unit and impact mechanism are rigidly connected, then the device structure is simple and stable, but the cutting blade cannot maintain full contact with the floor when driving over uneven surfaces
Solution Approach 1:
The drive unit and impact mechanism are connected through a rotatable joint connection that allows dynamic adaptation to uneven surfaces. The joint connection enables the drive unit to rotate relative to the impact mechanism about a pivot axis, allowing the cutting blade to maintain contact with the floor while the drive wheels traverse bumps and uneven terrain.
2Adaptability or versatility
If the drive unit rotates over uneven surfaces, then the device can traverse bumps, but the rotational movement is transmitted to the impact mechanism causing the cutting blade to lose contact with the floor
Solution Approach 1:
The device is divided into functionally independent segments: the drive unit with drive wheels for traversing uneven surfaces, and the impact mechanism with the cutting blade for cutting the covering. The joint connection acts as a decoupling element that allows the drive unit to rotate independently without transmitting rotational movement to the impact mechanism, ensuring the cutting blade remains stable and in contact with the floor.
3Adaptability or versatility
If the joint connection allows free rotation, then the device can adapt to uneven surfaces, but the drive unit and impact mechanism may tip sideways
Solution Approach 1:
The joint connection includes a limiting element that restricts the rotation angle between the drive unit and impact mechanism. This parameter change from free rotation to limited rotation allows the device to adapt to uneven surfaces within a safe angular range while preventing excessive rotation that could cause sideways tipping.
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 effective removal of floor coverings over bumps and uneven surfaces without transferring rotary motion to the percussion mechanism, ensuring continuous contact and preventing side tipping, thus facilitating efficient removal.
Implementation Method 1
the articulated connection comprises a rolling bearing as well as a first joint and a second joint
Data Source
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AI summary
The invention relates to a device for removing coverings laid on flat surfaces, having a drive unit (10) comprising a pair of drive wheels (12) and a first drive motor (14) for driving the drive wheels (12), and having a motor-driven impact unit (20) comprising a cutting knife (22) and a second drive motor (24), wherein the drive unit (10) and the impact unit (20) have an articulated connection (30), which is formed in such a way that the drive unit (10) and the impact unit (20) are rotatably mounted relative to each other.