Bogie Axle Balance System Using Reaction-Force Separation
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Solution Overview
Problem
Conventional bogie axle devices face a trade-off where achieving a high balance ratio for suppressing swing housing movement results in increased production costs, while reducing costs leads to a lower balance ratio, making it difficult to produce a system with both high balance ratio and low cost.
Innovation Solution
A balance system for bogie axle devices incorporating a reaction-force separating mechanism and a planetary gear mechanism, which separates and amplifies the reaction force without using additional ring gears, allowing for adjustable speed-change ratios and reduced component complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If conventional balance systems use multiple ring gears and planetary gear mechanisms to achieve high balance ratio, then the swing housing movement is suppressed effectively, but the production cost and device complexity increase significantly
Solution Approach 1:
The patent extracts and eliminates the need for multiple ring gears from the balance system. By using a differential mechanism combined with a single ring gear and planetary gear mechanism, the system achieves the same swing suppression function with fewer components, directly reducing device complexity while maintaining stability
Solution Approach 2:
The differential mechanism serves multiple functions: it transmits driving force to the axles and simultaneously generates the reaction force needed for swing suppression. This multi-functionality reduces the need for separate dedicated components, simplifying the overall balance system structure
2Stability of the object's composition
If conventional balance systems use multiple ring gears and planetary gear mechanisms to achieve high balance ratio, then the swing housing movement is suppressed effectively, but the production cost increases
Solution Approach 1:
The patent removes unnecessary ring gears from the system, reducing the number of precision-critical components that require expensive manufacturing and assembly processes. This directly lowers production costs while maintaining the balance ratio through the differential mechanism's inherent properties
Solution Approach 2:
The patent employs standard differential mechanisms and conventional planetary gear components that are easier and cheaper to manufacture compared to complex multi-ring-gear systems. These components can be produced using established manufacturing processes, reducing overall production cost
3Ease of manufacture
If conventional balance systems reduce component complexity to lower costs, then production cost decreases, but the balance ratio becomes lower and swing suppression effectiveness is reduced
Solution Approach 1:
The differential mechanism automatically generates a reaction force that acts as a counterweight to the swinging torque. This reaction force is produced through the inherent mechanical properties of the differential, providing effective swing suppression without requiring additional complex balancing components
Solution Approach 2:
The planetary gear mechanism acts as an intermediary that amplifies the reaction force generated by the differential mechanism. This force amplification allows the simplified system to achieve high balance ratio and effective swing suppression despite having fewer components
4Stability of the object's composition
If the balance system uses additional ring gears to achieve high balance ratio, then swing suppression improves, but the system weight increases
Solution Approach 1:
The patent eliminates multiple heavy ring gears from the balance system, reducing the overall weight of stationary components. The swing suppression function is maintained through the differential mechanism and single ring gear configuration, achieving the same stability with less mass
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 proposed system achieves a high balance ratio of approximately 90% while maintaining lower costs and reduced weight, effectively suppressing swing housing movement with improved flexibility across different bogie axle devices.
Implementation Method 1
a planetary gear mechanism (42L, 42R) which amplifies the reaction force and inputs it in the swing housing (31L, 31R)
Implementation Method 2
In the direction opposite to the tangential force F, a reaction force F' is exerted on the swing housing 86, and thereby, a counterclockwise swinging torque Ts is exerted on a swing shaft Os of the swing housing 86
Data Source
Figure 1
Figure 2
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AI summary
[Problems] To provide a bogie axle device and a balance system which are capable of obtaining a high balance ratio at a low cost. [Problems] To provide an exhaled-air pressure measuring device capable of deciding on exhaled-air pressure levels suitable for usage purposes. [Means for solving the Problems] A balance system 4L includes: a reaction-force separating mechanism 41L in which a driving force is inputted from a driving unit; and a planetary gear mechanism 42L which transmits, to a swing housing, a reaction force for suppressing a swing of the swing housing. The reaction-force separating mechanism 41L separates the inputted driving force, without employing any ring gear, into a driving force to be inputted in a driving-force transmitting mechanism and a reaction force to be inputted in the swing housing. The planetary gear mechanism 42L amplifies the reaction force, inputs it in the swing housing and generates a swing suppressing torque for suppressing a swing of the swing housing.