Wall-Smoothing Attachment With Passive Contact Pressure Compensation
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Solution Overview
Problem
Existing machines designed for soil cultivation are not suitable for processing walls and ceilings due to the inability to maintain consistent contact pressure, leading to fluctuations that affect the quality of the processing result, and require high control effort with potential overcontrol issues.
Innovation Solution
A handling device with an attachment that includes a compensation arrangement to maintain constant contact pressure, allowing the attachment to operate autonomously and compensate for pressure fluctuations, ensuring consistent processing quality without the need for direct operator intervention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a sensor-based control system is used to detect and adjust contact pressure, then contact pressure can be corrected in theory, but the system cannot react quickly enough in practice due to inertia, leading to oversteering and instability
Solution Approach 1:
Instead of using active sensors to detect and correct contact pressure fluctuations, the patent inverts the approach by using passive mechanical elements (springs and dampers) that automatically absorb and compensate for fluctuations. The compensation arrangement passively reacts to position changes rather than actively sensing and correcting them, eliminating the instability caused by high control effort and system inertia.
Solution Approach 2:
The compensation arrangement is self-regulating and does not require external control signals or sensor feedback. The springs and dampers automatically adjust to maintain consistent contact pressure based on the attachment's position relative to the surface, making the system self-sufficient and eliminating the need for complex control systems that cause oversteering.
2Manufacturing precision
If high control effort is applied to maintain contact pressure, then processing quality can be improved, but the system becomes difficult to control and may oversteer
Solution Approach 1:
The compensation arrangement automatically maintains consistent contact pressure without requiring operator intervention or complex control inputs. The mechanical compensation system self-regulates based on position changes, reducing the operator's burden while ensuring high processing quality through consistent contact pressure throughout the working area.
3Adaptability or versatility
If the attachment is mounted on a handling device with limited positioning rigidity, then versatility is improved, but contact pressure fluctuations increase
Solution Approach 1:
The compensation arrangement anticipates and cushions against contact pressure fluctuations caused by handling device positioning variations. The springs and dampers are pre-configured to absorb position changes within the working area, ensuring consistent contact pressure even when mounted on handling devices with limited rigidity or positioning precision.
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 enables efficient and consistent processing of walls and ceilings with reduced operator burden, maintaining contact pressure within a small tolerance range, enhancing processing quality and ease of operation across various handling devices.
Implementation Method 1
A compensation arrangement 106 is arranged between the mounting unit 104 and the processing head 102. The compensation arrangement 106 compensates for position changes of the attachment interface 38 of the handling device 10 in the longitudinal direction 160
Data Source
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Figure 3
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AI summary
The invention relates to an attachment (100) for the abrading or smoothing of walls or ceilings for a mobile handling device (10), wherein the attachment (100) has a mounting unit (104) to be received at an attachment interface (38) of the handling device (10), a machining head (102), which can be equipped with at least one tool for abrading or smoothing, and a compensation arrangement (106) between the mounting unit (104) and the machining head (102), which compensation arrangement defines a longitudinal axis (246). The machining head (102) is movable relative to the mounting unit (104) in a longitudinal direction (160) along the longitudinal axis (246), and the compensation arrangement (106) is designed to provide, in a defined working region (172) along the longitudinal axis (246), a defined contact pressure for the machining head (102) in the direction of the surface to be machined. The invention also relates to a corresponding handling device (10) and to a use of an attachment (100) comprising a handling device (10).