Track-Tamping Machine Tamping Unit Groups for Switch Area Adaptability
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Solution Overview
Problem
Existing track tamping machines face challenges in achieving both high rigidity and flexibility for efficient tamping of both routes and switches, often resulting in suboptimal performance and geometric irregularities due to limited transverse adjustment and interference with obstacles.
Innovation Solution
The arrangement of at least two tamping unit groups one behind the other, with independent transverse and vertical displacement, and rotational capability about the track's vertical axis, allows for simultaneous tamping and adjustment to avoid obstacles, enabling effective tamping of both routes and switches with improved rigidity and compactness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If multiple tamping units share common guides in the console, then the structure is more compact, but the vertical rigidity and longitudinal rigidity decrease
Solution Approach 1:
The patent divides the guide system into separate guide columns for each tamping unit group rather than sharing common guides. This segmentation allows each guide column to independently support its tamping unit, thereby maintaining high vertical and longitudinal rigidity while achieving a compact overall structure through the shared console design.
2Device complexity
If the inner tamping unit is limited to move only up to the outer tamping unit, then the guide structure is simpler, but the transverse adjustment range is reduced
Solution Approach 1:
The patent implements independent transverse displacement drives for both inner and outer tamping units, allowing dynamic and flexible positioning. The inner tamping unit can move beyond the outer unit's position when needed, providing a larger transverse adjustment range while maintaining a relatively simple guide structure through the use of independent drives for each unit.
3Device complexity
If tamping units are arranged in a single row, then the device is simpler, but the ability to handle complex switch areas is reduced
Solution Approach 1:
The patent arranges tamping unit groups in multiple rows (front and rear positions) rather than a single row. This multi-row configuration, combined with independent transverse and vertical displacement capabilities, enables the tamping units to access and work on complex switch areas from different positions, significantly enhancing adaptability while maintaining reasonable device complexity.
4Device complexity
If tamping units operate sequentially, then the control system is simpler, but the tamping efficiency and productivity decrease
Solution Approach 1:
The patent enables multiple tamping unit groups to operate simultaneously and independently on different sleepers or track sections. Each tamping unit group can perform tamping operations in parallel, significantly increasing productivity. The control system manages this concurrent operation through independent control of each unit group, balancing complexity with efficiency gains.
Data Source
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AI summary
The invention relates to a track-tamping machine (100) for compressing the ballast bed of a track, comprising a tamping assembly group that has at least two tamping assemblies (ST), which are arranged in a row and can be moved transversely to the track-tamping machine longitudinal direction (AR) by a transverse-movement device, in order to tamp the track on each track-tamping machine side (R, L), said tamping assembly group (V, H) being rotatably mounted on a support (18) for the purpose of a rotational adjustment about a track-tamping machine vertical axis (A). In order to provide advantageous structural conditions, at least two tamping assembly groups (V, H) are arranged one behind the other in the track-tamping machine longitudinal direction (A, R), said groups being rotatably mounted about the track-tamping machine vertical axis (A) via a common rotational device (2), wherein the tamping assemblies (ST) of the tamping assembly groups (V, H) can be moved independently of one another transversely to the track-tamping machine longitudinal direction (AR) and can be lifted and lowered relative to the consoles (3) independently of one another.