Lifting device for machines for the treatment of surfaces
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Solution Overview
Problem
Existing surface treatment machines with motorized rotating brushes suffer from poor maneuverability and stability during handling due to fixed wheels and complex extraction mechanisms, leading to user fatigue and inefficiency in cleaning restricted areas.
Innovation Solution
A surface treatment machine with a pivoting wheel system that adjusts its rotation axis to remain orthogonal to the surface in both working and movement configurations, utilizing a reversible cam mechanism for easy and efficient transition between configurations, ensuring optimal maneuverability and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If fixed wheels are used in the support element, then the structure is simple, but the maneuverability and stability of the machine deteriorate during handling
Solution Approach 1:
The wheel is transformed from a fixed structure to a dynamic pivoting structure. The support element incorporates a pivoting wheel that can rotate about a horizontal axis perpendicular to the rotation axis, allowing the wheel to adapt its orientation between working and movement configurations, thereby improving maneuverability while maintaining operational stability.
Solution Approach 2:
The orientation parameter of the wheel's rotation axis is changed dynamically. In the working configuration, the rotation axis is orthogonal to the surface; in the movement configuration, the pivoting mechanism adjusts the rotation axis to remain substantially vertical, optimizing performance for each operational state without increasing overall structural complexity.
2Stability of the object's composition
If the rotation axis of the wheel is kept orthogonal to the ground in both configurations, then stability is improved, but the mechanism complexity increases due to required extraction mechanisms
Solution Approach 1:
Instead of using complex extraction mechanisms to maintain a fixed orthogonal rotation axis, the invention employs a dynamic pivoting mechanism that allows the rotation axis to倾斜 relative to the frame while remaining substantially vertical in space. This dynamic adaptation achieves stability without requiring complex extraction mechanisms.
Solution Approach 2:
The support element is segmented into the wheel assembly and the pivoting mechanism. The pivoting wheel comprises a wheel portion and a pivoting mechanism portion that can rotate independently about a horizontal axis, allowing the rotation axis orientation to change while maintaining the wheel's contact function, thereby simplifying the overall mechanism.
3Stability of the object's composition
If complex extraction mechanisms are used to maintain orthogonal rotation axis, then stability is improved, but the ease of operation deteriorates due to difficulty in quick operation
Solution Approach 1:
The pivoting mechanism enables dynamic adjustment of the wheel orientation through simple rotational movement about a horizontal axis. This dynamic design allows quick transition between configurations by simply pivoting the wheel, eliminating the need for complex extraction mechanisms and improving ease of operation while maintaining stability.
4Device complexity
If fixed wheels are used, then the device complexity is reduced, but the productivity deteriorates due to user fatigue and inefficiency in restricted areas
Solution Approach 1:
The pivoting wheel mechanism provides dynamic adaptability that improves maneuverability in restricted areas without significantly increasing device complexity. The ability to quickly adjust the wheel orientation reduces user fatigue and enables efficient cleaning in confined spaces, thereby improving productivity.
Data Source
Figure 1
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AI summary
A machine (100) for treating a surface (200) comprises a frame (110) having a rear portion (111) arranged to get in contact with the surface (200) at a contact line λ, a front portion (112) arranged to support an element of treatment (115), and a support element (130) arranged to pass between a retracted configuration, where the element of treatment (115) touches the surface (200), and an extended configuration, where the element of treatment (115) does not touch the surface (200). The frame (110) also comprises a reference plane n that is substantially coincident with the surface (200), when the support element (130) is in the retracted configuration, and arranged to rotate about the contact line λ forming an angle a with the surface (200), when the support element (130) passes in the extended configuration. The frame (110) also comprises a reference axis y at an angle a/2 with respect to normal z of the reference plane n. The support element (130) comprises a pivoting wheel (135) arranged to rotate about a rotation axis x. The support element (130) passes between the retracted configuration and the extended configuration by means of a rotation of 180° of the rotation axis x about its reference axis y and a contemporaneous translation of the rotation axis x along the reference axis y. Furthermore, the rotation axis x is at an angle with respect to the reference axis y by an angle a/2, in such a way that the rotation axis x is parallel to normal z, when the support element (130) is in the retracted configuration, and it is at an angle a with respect to normal z, when the support element (130) is in the extended configuration, and therefore the rotation axis x is always orthogonal to the surface (200).