Fluid-Damped Direct-Drive Bicycle Platform
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Solution Overview
Problem
Existing direct-drive bicycle riding platforms are limited by electromagnetic damping devices that require a power source, are not low-carbon, have adjustable height constraints, limited bicycle compatibility, high noise levels, and inefficient packaging due to fixed structures and large volumes.
Innovation Solution
A fluid-damped direct-drive bicycle riding platform with an adjustable main shaft, stepless damping, and a disassemblable rack design that uses a fluid resistor and pulley system for smooth operation, eliminating the need for a power source and reducing noise through a fully enclosed fluid-damped device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If electromagnetic damping device is used, then damping control is achieved, but power source is required and energy consumption increases
Solution Approach 1:
The patent replaces the electromagnetic damping system with a purely mechanical fluid damping system. The fluid damper uses viscous fluid resistance to provide damping force without requiring electrical power, thus eliminating the need for power source and energy consumption while maintaining damping control capability through mechanical means alone.
Solution Approach 2:
The fluid damping system is self-regulating and does not require external power input. The damping force is automatically generated through the viscous properties of the fluid and the mechanical motion itself, making the system self-service and independent of external power sources.
2Ease of operation
If electromagnetic damping device is used, then damping function is achieved, but noise is increased
Solution Approach 1:
The patent eliminates electromagnetic components that generate electromagnetic noise and replaces them with a mechanical fluid damping system. The fluid damper operates silently through viscous fluid resistance, significantly reducing overall noise levels while maintaining the damping function.
3Device complexity
If fixed main shaft height is used, then structure is simplified, but bicycle compatibility is limited
Solution Approach 1:
The patent implements an adjustable main shaft height mechanism that allows the structure to dynamically adapt to different bicycle types. The main shaft can be positioned at multiple height levels to accommodate various bicycle frame geometries, thereby improving compatibility without significantly complicating the overall structure.
Solution Approach 2:
The patent divides the main shaft support structure into separable segments that can be adjusted or reconfigured. This segmentation allows the main shaft height to be modified for different bicycle applications while keeping the base structure relatively simple and modular.
4Strength
If welded overall rack structure is used, then structural strength is ensured, but packaging volume is large and transportation cost is high
Solution Approach 1:
The patent divides the rack structure into multiple separable modules or components that can be disassembled for compact packaging. Each module maintains its structural integrity through localized welding or rigid connections, while the overall rack can be reassembled at the destination, significantly reducing packaging volume and transportation costs.
Solution Approach 2:
The patent designs the rack components to nest within each other when disassembled, similar to nested dolls. This nesting arrangement minimizes the packaging volume required for transportation while ensuring that each component retains sufficient structural strength for assembly into a rigid overall structure.
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 platform is more environmentally friendly, adaptable to various bicycles, reduces energy consumption, and achieves smoother riding with adjustable damping, while also minimizing packaging and transportation costs and noise.
Implementation Method 1
fluid-damped direct-drive bicycle riding platform
Data Source
AI summary
A fluid-damped direct-drive bicycle riding platform includes a rack for supporting, a main shaft, a transmission shaft and a fluid resistor, wherein the rack includes a front bottom foot tube, a rear bottom foot tube, a front support rod, a main beam and an angle adjuster; the front support rod is fixed on the front bottom foot tube, the main beam is fixed on the rear bottom foot tube, the angle adjuster is fixed on the main beam, the upper end of the front support rod is hinged to the angle adjuster through a spline, the main beam is provided with the main shaft and the transmission shaft, the main shaft is press-fitted on the main beam in an interference fit, the main shaft and transmission shaft are driven by a pulley and a belt to drive the liquid resistor fixed to the left end of the transmission shaft.