Floor Treatment Pulley Drive for Single-Motor Head and Housing Rotation
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Solution Overview
Problem
Existing floor treatment apparatuses for stone or stone-like materials require separate drives for the heads and housing, complicating construction and operation, and often result in uneven torque distribution and directional inconsistencies during polishing or grinding processes.
Innovation Solution
A floor treatment apparatus with a frame, rotatable housing, and multiple pulleys system where a single electric motor drives both the heads and housing through a main belt and auxiliary belt system, allowing for dual functionality of the tensioning pulley in both belt tensioning and housing rotation, reducing component count and ensuring consistent directional rotation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If separate drives are used for heads and housing, then each component can be driven independently, but the device complexity increases and construction is complicated
Solution Approach 1:
The patent combines two separate drive functions (head rotation and housing rotation) into a single electric motor. The motor's rotation axis serves as the housing rotation axis, and through a belt and pulley system, it simultaneously drives both the heads and the housing, eliminating the need for separate drives and simplifying the overall construction.
Solution Approach 2:
The single electric motor performs multiple functions: it directly rotates the housing around its axis and simultaneously drives the heads through the belt transmission system. This multi-functional design reduces the number of components while maintaining independent control capability for both functions.
2Device complexity
If a single motor drives both heads and housing, then device complexity is reduced, but torque distribution becomes uneven and directional consistency is compromised
Solution Approach 1:
The patent segments the power transmission paths from the single motor into distinct routes: one path directly drives the housing rotation, while another path through belts and pulleys drives the heads. This segmentation allows each function to receive appropriate torque independently, ensuring uniform torque distribution despite using a single motor.
Solution Approach 2:
The belt and pulley system acts as an intermediary mechanism between the motor and the heads, mediating the torque transmission. This intermediary allows for controlled torque distribution and directional consistency, ensuring that the heads rotate in the correct direction while the housing rotates independently, thereby maintaining reliability.
3Reliability
If tensioning pulley is used only for belt tensioning, then belt stability is ensured, but additional components are needed for housing rotation
Solution Approach 1:
The tensioning pulley is designed to perform dual functions: it maintains the necessary tension on the belt for stable operation and simultaneously serves as a transmission element for driving the housing rotation. This multi-functional design eliminates the need for separate components, reducing overall device complexity while ensuring belt stability.
Solution Approach 2:
The patent merges the belt tensioning function and the housing drive function into a single tensioning pulley component. This consolidation reduces the total number of parts while ensuring that the belt remains properly tensioned for reliable operation, thereby resolving the contradiction between reliability and complexity.
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 design simplifies the construction and operation by reducing the number of components and ensuring consistent torque distribution, allowing for efficient and reliable rotation of both the heads and housing with the ability to maintain desired directional rotation for polishing or grinding operations.
Implementation Method 1
For the purpose of preventing slip between the main belt and the pulleys, said main belt is tensioned by means of a main belt tensioning pulley
Implementation Method 2
an auxiliary belt slung around the auxiliary pulley and the fixed pulley for rotating the housing with respect to the frame
Implementation Method 3
said main belt is tensioned by means of a main belt tensioning pulley
Data Source
AI summary
A floor treatment apparatus includes a frame, a housing which is rotatable with respect to the frame according to a main axis, at least three head pulleys which are rotatable with respect to the housing according to respective head axes which are regularly spaced around, and which are parallel to, the main axis, a motor supported by the frame, a drive pulley which is drivable by the motor, a main belt tensioning pulley and a main belt which is slung around the drive pulley, the head pulleys and the main belt tensioning pulley. Further an auxiliary pulley is coaxially connected to the main belt tensioning pulley. A fixed pulley is connected to the frame. An auxiliary belt is slung around the auxiliary pulley and the fixed pulley for rotating the housing with respect to the frame.