Frog Point Roller Guide with Angled Stops
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Solution Overview
Problem
Existing devices for shifting a frog point in a track system lack flexibility in positioning variations, as the frog point is spatially decoupled from the roller bearing and relies on a specially designed bracket, limiting its ability to adjust to different wing rail impacts.
Innovation Solution
The device incorporates a guide track with stop elements and eccentric rollers, along with angled stop surfaces and ramps, to securely position the movable frame and minimize friction, allowing precise adjustment and locking of the frog point between wing rails.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the frog point is spatially decoupled from the roller bearing and arranged on a specially designed bracket, then the device can shift the frog point between two positions, but the positioning cannot accommodate variations in wing rail impact
Solution Approach 1:
The patent applies the dynamics principle by making the guideway itself movable relative to the fixed frame, allowing it to adjust its position dynamically. The guideway can move in the longitudinal direction and is equipped with stop surfaces that can be positioned at different locations, enabling the system to adapt to various wing rail impact positions without requiring a complex specially designed bracket structure.
Solution Approach 2:
The patent implements universality by designing the guideway to serve multiple functions: it guides the roller, provides stop surfaces for positioning, and can be adjusted to accommodate different impact positions. This multi-functional design eliminates the need for separate specialized brackets, as the guideway itself becomes the universal positioning mechanism.
2Reliability
If the frog point is raised during movement between positions, then the impact on wing rails can be absorbed, but friction increases and wear occurs
Solution Approach 1:
The patent applies the dimensionality change principle by introducing vertical movement of the guideway relative to the fixed frame. The guideway can move up and down in the vertical dimension, allowing it to absorb impact forces vertically while the roller moves horizontally along the guideway. This separates the impact absorption function from the horizontal movement function, minimizing friction and wear during the shifting operation.
3Manufacturing precision
If stop elements are provided to limit relative movement, then positioning precision is improved, but the device structure becomes more complex
Solution Approach 1:
The patent implements merging by combining the stop element function directly into the guideway structure. The stop surfaces are integrated as part of the guideway, eliminating the need for separate stop elements. The guideway itself provides both the guiding function and the positioning function through its stop surfaces, simplifying the overall device structure while maintaining positioning precision.
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
This solution enables precise and wear-free movement of the frog point, ensuring accurate positioning and minimizing lateral displacement, resulting in a reliable and low-friction track system with reduced wear and tear.
Implementation Method 1
the roller arrangement comprises at least one eccentrically mounted roller. This makes it possible with particularly simple means that the horizontal displacement of the frog point between the two wing rails of the track system is supported with a movement component in the vertical, in order to minimize or completely avoid the friction between the movable frame and the fixed frame
Implementation Method 2
the at least one guide track has two settling surfaces arranged laterally to a central displacement surface and the central displacement surface has a defined difference in height compared to the settling surfaces. This ensures that when the roller device is driven over the guideway, the movable frame and the frog point connected to it are inevitably lifted by at least the amount of the defined height difference, and the shifting of the frog point when the rollers are driven over the central displacement surface occurs with the lowest possible friction
Implementation Method 3
two mutually supported stop surfaces angled to the longitudinal direction of the track via which the positioning of the starting position of the movable frame within the fixed frame can be ensured particularly securely. By providing the mutually complementary inclined surfaces, a displacement of the surfaces in the longitudinal direction relative to one another necessarily also means an adjustment in the position of the elements to be adjusted relative to one another perpendicular to the longitudinal effect
Data Source
AI summary
The invention relates to a device for moving a frog point (1) of a track system movable between two wing rails (10a, 10b), wherein the wing rails (10a, 10b) are connected to a fixed frame (2) and the frog point (1) is connected to a movable frame (3), and the movable frame (3) is slidably mounted relative to the fixed frame (2) by means of a roller arrangement (4, 5) arranged outside the space (B) defined by the wing rails (10a, 10b). The fixed frame (2) has at least one guide track (7) for guiding the movement of the movable frame (3) relative to the fixed frame (2), wherein the movable frame (3) and the fixed frame (2), preferably the at least one guide track (7), comprise two stop surfaces (C) mounted against each other and angled to the longitudinal direction (E) of the track (7).Furthermore, the invention relates to a track switch comprising at least one device according to the invention.