Rail Grinding Machine Quick-Change Guide System

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Solution Overview

Problem

Existing rail grinding machines lack adaptability to local conditions and ergonomic operation, leading to inefficient and cumbersome use, especially when dealing with varying rail geometries and operator requirements.

Innovation Solution

The grinding machine incorporates a quick-change rail guide system with interchangeable components, a gear for optimized power transmission, and adjustable height settings, along with a rotatable guide handle and multi-disc brake for ergonomic and safe operation, allowing for easy adaptation to different rail configurations and user preferences.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a fixed rail guide system is used, then the structure is simple, but the adaptability to different rail conditions is poor

Engineering Contradiction:
Improveadaptability to different rail conditionsVSAvoidcomplexity of rail guide system
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The rail guide system is divided into interchangeable modular components (first rail guide system with inner and outer plate washers, second rail guide system with cup washers, guide roller, and guide hook). These segmented modules can be quickly swapped via the quick-change device to adapt to different rail conditions, resolving the contradiction between adaptability and structural simplicity.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The support frame is designed with a universal quick-change device that can accommodate multiple types of rail guide systems. This multi-functional interface allows a single base structure to support various rail guide configurations, achieving adaptability without proportionally increasing overall device complexity.

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Ease of operation

If the grinding element is fixed in position, then the structure is simple, but the ease of operation for different operators is poor

Engineering Contradiction:
Improveergonomic operationVSAvoidcomplexity of height adjustment mechanism
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The grinding element is made dynamically adjustable in height relative to the support frame through the height adjustment mechanism. This dynamic positioning capability allows different operators to ergonomically adjust the grinding element to their preferred height, resolving the contradiction between operational ease and structural simplicity.

Inventive Principle:
Principle #15Dynamics

3Productivity

If a single rail guide system is used, then the device complexity is low, but the productivity for varying rail geometries is reduced

Engineering Contradiction:
Improvework progress speedVSAvoidnumber of rail guide systems
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

Multiple rail guide systems are pre-configured and ready for quick interchange. The first rail guide system (plate washers) is pre-configured for standard rail heads enabling faster work progress, while the second system (cup washers, guide roller, guide hook) is pre-configured for switch areas and rail crossings. This preliminary preparation of multiple systems allows rapid adaptation to varying rail geometries without increasing operational complexity.

Inventive Principle:
Principle #10Preliminary action

4Adaptability or versatility

If the guide handle is fixed in position, then the structure is simple, but the adaptability to different operator preferences is poor

Engineering Contradiction:
Improveadaptability to operator preferencesVSAvoidcomplexity of guide handle mounting
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The guide handle is made dynamically repositionable on the support frame through the alternate mounting mechanism. Operators can adjust the guide handle position and angle according to their ergonomic preferences and lock it in place using the locking device. This dynamic adjustment capability resolves the contradiction between adaptability to operator preferences and structural simplicity.

Inventive Principle:
Principle #15Dynamics

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 flexible and efficient rail grinding by allowing quick adaptation to various rail conditions, reducing operator effort and ensuring safe, ergonomic operation for both right- and left-handed users, with minimal maintenance requirements.

Implementation Method 1

The grinding element is connected to the drive motor via a gear for power transmission.

Methodology Applied
Scientific EffectGear power transmission: Gear

Implementation Method 2

the locking device is designed as a multi-disc brake. Disk brakes are subject to very little wear and are almost maintenance-free

Methodology Applied
Scientific EffectFriction: Friction

Implementation Method 3

an axis of rotation of the outer plate disk is inclined downwards at an angle in relation to an axis of rotation of the inner plate disk. In this way, a higher holding or clamping force acts on the grinding machine when grinding the side of the rail.

Methodology Applied
Scientific EffectFriction: Friction

Data Source

PatentEP3615732B1Grinding machine for grinding a rail of a track
Publication Date: 2021.05.05 ROBEL BAHNBAUMASCHINEN GMBH
  • EP3615732B1 patent drawingFigure 1~3
  • EP3615732B1 patent drawingFigure 4~6
  • EP3615732B1 patent drawingFigure 7~9

AI summary

The invention relates to a grinding machine (1), which can be manually translated on a track (3), for grinding a rail (2) of the track (3), comprising a support frame (5), which is guided on the rails (2) by means of two rail guides (8) and on which a drive motor (10) is arranged, which drive motor is coupled to a height-adjustable grinding element (11). According to the invention, each rail guide (8) comprises a quick-change device (22), in which one of at least two rail guide systems (14, 15), which can be exchanged with each other, is fastened.