Rotating Mass Vertical Force Device for Railroad Tie Stabilization

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Solution Overview

Problem

Conventional stabilizers for railroad ties require heavy, manned machinery to generate downward force, which is inefficient and costly, and do not allow for lighter frames that could stabilize ties effectively into the ballast bed.

Innovation Solution

A device comprising a housing with bearing and mass sleeves, where the mass sleeves are rotated to generate vertical force, minimizing upward force and allowing for lighter frames to apply downward force for stabilization, utilizing a gear box and eccentric positioning of the drive shaft to optimize force application.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Force

If conventional hydraulic cylinders on a heavy frame are used to generate downward force, then sufficient stabilization force is achieved, but the equipment becomes heavy and inefficient

Engineering Contradiction:
Improvedownward forceVSAvoidframe weight
Core Design Contradiction:
ForceVSWeight of moving object

Solution Approach 1:

The patent employs rotating unbalanced masses that generate vertical vibratory forces through centrifugal action. The masses are positioned偏心 (eccentrically) on rotating shafts, creating periodic vertical forces that stabilize railroad ties without requiring heavy frames. The vibration frequency and amplitude are controlled to optimize the downward force application while minimizing upward force generation.

Inventive Principle:
Principle #18Mechanical vibration

2Force

If heavy machinery is used to generate downward force, then stabilization is effective, but operational efficiency decreases and cost increases

Engineering Contradiction:
Improvedownward forceVSAvoidoperational efficiency
Core Design Contradiction:
ForceVSProductivity

Solution Approach 1:

The device uses controlled mechanical vibration from rotating unbalanced masses to achieve tie stabilization. This vibration-based approach eliminates the need for heavy, slow-moving equipment, allowing the stabilizer to be pulled along the track at higher speeds by a locomotive. The vibratory force is applied continuously or selectively to ties requiring stabilization, significantly improving operational efficiency.

Inventive Principle:
Principle #18Mechanical vibration

Solution Approach 2:

The patent replaces the conventional hydraulic mechanical system with a vibration-based system. Instead of using hydraulic cylinders that require heavy frames and slow operation, the invention uses rotating masses that generate forces through centrifugal vibration. This substitution enables lighter construction and faster operation while maintaining effective stabilization force.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Weight of moving object

If rotating masses are used to generate vertical force, then lighter frames are possible, but upward force must be minimized to prevent frame lift-off

Engineering Contradiction:
Improveframe weightVSAvoidupward force
Core Design Contradiction:
Weight of moving objectVSForce

Solution Approach 1:

The rotating unbalanced masses generate vertical vibratory forces with controlled amplitude and frequency. By optimizing the mass distribution, rotation speed, and synchronization of multiple mass sleeves, the system produces predominantly downward force during the critical stabilization phase while minimizing upward force that could cause frame lift-off. The vibration parameters are tuned to ensure the frame remains grounded throughout operation.

Inventive Principle:
Principle #18Mechanical vibration

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 efficient stabilization of railroad ties with lighter machinery, reducing the need for heavy equipment and enhancing safety by minimizing upward forces, while allowing continuous or selective application of downward force along the rail tracks.

Implementation Method 1

A device for generating vertical force includes a housing, a bearing sleeve mounted in the housing, and a mass sleeve mounted within the bearing sleeve. The mass sleeve has a pair of masses coupled thereto in which one of the masses is larger than the other mass and the masses are positioned opposite one another.

Methodology Applied
Scientific EffectCentrifugal force: Centrifugal Force

Data Source

PatentUS9441330B2Device for generating vertical force with rotating mass
Publication Date: 2016.09.13 HARSCO CORP
  • US9441330B2 patent drawing
  • US9441330B2 patent drawing
  • US9441330B2 patent drawing

AI summary

The present disclosure relates to a device for generating vertical force. The device includes a housing, at least one bearing sleeve mounted in the housing, and at least one mass sleeve mounted within the bearing sleeve. The mass sleeve includes first and second masses with the first mass being larger than the second mass and the first and second masses being positioned substantially 180 degrees relative to one another. Related methods are described.