Adjustable Dual-Impeller Water Resistance Rowing Machine
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Solution Overview
Problem
Existing water-resistance rowing devices cannot adjust resistance levels after installation, limiting user customization of exercise intensity.
Innovation Solution
A double-impeller water-resistance rowing machine with an adjustable linkage mechanism that allows the distance between blades on two impellers to be adjusted, altering the relative rotation angle to change resistance levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single impeller with fixed blades is used, then the structure is simple, but the resistance cannot be adjusted
Solution Approach 1:
The single impeller is divided into two separate impellers (first impeller and second impeller), each with adjustable blades. This segmentation allows independent adjustment of each impeller's blade configuration to achieve different resistance levels while maintaining structural manageability
Solution Approach 2:
The impeller structure is made dynamic through the adjustable blade mechanisms. The first and second impellers can independently adjust their blade angles and positions during operation, transforming from a static fixed-blade design to a dynamic adjustable design that adapts to different resistance requirements
2Adaptability or versatility
If multiple impellers with adjustable blades are added, then resistance can be adjusted, but the device complexity increases
Solution Approach 1:
The adjustment mechanisms of the two impellers are merged through a shared linkage mechanism. The first linkage mechanism and second linkage mechanism are coordinated to allow simultaneous or independent adjustment of both impellers, reducing the overall complexity compared to having completely separate adjustment systems
Solution Approach 2:
The linkage mechanism is designed with multi-functionality to handle both impeller adjustments. It can control blade angles, positions, and rotation speeds of both first and second impellers through a unified control system, making the mechanism more versatile and reducing redundant components
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 users to customize resistance levels by adjusting the morphology of the impellers, providing a more personalized and effective workout experience.
Implementation Method 1
The pulley is also provided with an elastic rope. When the handle is pulled hard, the conveyor belt can drive the pulley to rotate, thereby driving the rotation shaft and the impeller to rotate. When the handle is no longer pulled hard, the tension of the elastic rope causes the pulley and the rotation shaft to rotate in reverse, thereby resetting the handle to its initial state.
Implementation Method 2
When the impeller rotates, the blade is subjected to the resistance of the water in the water tank
Data Source
AI summary
Provided is a water-resistance rowing exercise machine, comprising a bracket, a water tank fixed to the bracket, a linkage mechanism, a rotation angle adjustment mechanism. The water tank is internally provided with a first impeller and a second impeller. The first impeller comprises a first plate portion and a plurality of first blades distributed on the periphery of the first plate portion. The second impeller comprises a second plate portion and a plurality of second blades distributed on the periphery of the second plate portion. The rotation angle adjustment mechanism is configured to adjust a relative rotation angle between the first impeller and the second impeller the first blades and the second blades may approach to or depart from each other. The distance between the first blades and the second blades can be adjusted by adjusting the relative rotation angle between the first impeller and the second impeller.